CN113335006A - Trailer and suspension system thereof - Google Patents

Trailer and suspension system thereof Download PDF

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Publication number
CN113335006A
CN113335006A CN202110495836.3A CN202110495836A CN113335006A CN 113335006 A CN113335006 A CN 113335006A CN 202110495836 A CN202110495836 A CN 202110495836A CN 113335006 A CN113335006 A CN 113335006A
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CN
China
Prior art keywords
trailer
air
suspension
ball head
suspension system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202110495836.3A
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Chinese (zh)
Inventor
刘成亮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Yuncheng Juntong Special Vehicle Co Ltd
Original Assignee
Shandong Yuncheng Juntong Special Vehicle Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Yuncheng Juntong Special Vehicle Co Ltd filed Critical Shandong Yuncheng Juntong Special Vehicle Co Ltd
Priority to CN202110495836.3A priority Critical patent/CN113335006A/en
Publication of CN113335006A publication Critical patent/CN113335006A/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
    • B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/02—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only
    • B60G11/04—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only arranged substantially parallel to the longitudinal axis of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
    • B60G11/28—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/32—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds
    • B60G11/34—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs
    • B60G11/46—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs and also fluid springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/02—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally
    • B60G13/06—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type
    • B60G13/10—Resilient suspensions characterised by arrangement, location or type of vibration dampers having dampers dissipating energy, e.g. frictionally of fluid type pneumatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
    • B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The invention discloses a trailer and the technical field of a suspension system of the trailer, belonging to the technical field of trailers, the trailer comprises a trailer frame, the front end of the trailer frame is provided with a traction pin, cross beams are welded between the inner walls of the trailer frame at equal intervals along the width direction of the trailer frame, the center of the trailer frame is symmetrically provided with at least one group of wheels, and the front of each wheel is provided with a support leg; the suspension system of the trailer comprises a suspension, wherein the suspension connects a trailer frame with wheels, a main shaft is contained in the suspension, wheel hubs are mounted at two ends of the main shaft, the wheels are sleeved on the wheel hubs, and air shock absorbers are symmetrically arranged at the front ends of the main shaft. The air spring has the advantages that the supporting force can be generated when the air spring is installed by additionally arranging the connecting plate at the bottom of the air suspension, the air spring is prevented from being in an unstable state in the air suspension, the acting force of the air spring can be concentrated at the connecting point when the air spring is bumped, the connecting point is deformed and cracked, and the supporting force is provided for the air spring through the connecting plate.

Description

Trailer and suspension system thereof
Technical Field
The invention belongs to the technical field of trailers, and particularly relates to a trailer and a suspension system of the trailer.
Background
The traditional steel plate spring suspension has the characteristics of simple structure, low price and simple and convenient maintenance and installation, and is widely applied to the semitrailer in the past. However, with the increasing increase of road transportation volume and higher requirements on vehicle running safety and smoothness and transportation requirements in high-end fields such as precision instrument transportation, tobacco transportation and hazardous transportation, the defects of the leaf spring suspension are increasingly revealed, so that the trend that the air suspension with higher performance replaces the leaf spring suspension is gradually developed.
The air suspension system is an advanced and practical configuration, but is fragile, the probability and frequency of faults of the air suspension system are far higher than those of a spiral spring suspension system due to the fact that the structure of the system is complex, and one of specific reasons is that all parts of the air suspension system are connected in a non-rigid mode, so that the air suspension system cannot buffer in time after being jolted when used tidily.
Disclosure of Invention
The invention provides a trailer and a suspension system thereof, aiming at the problems of the existing suspension system of the trailer, wherein the suspension changes the connection mode of the existing air suspension and adds a plate spring for stabilizing and damping to buffer the whole air suspension, thereby reducing the vulnerability of the air suspension.
In order to solve the above problems, the present invention adopts the following technical solutions.
A trailer comprises a trailer frame, wherein the front end of the trailer frame is provided with a traction pin, cross beams are welded between the inner walls of the trailer frame at equal intervals along the width direction of the trailer frame, at least one group of wheels are symmetrically arranged at the center of the trailer frame, support legs are arranged in front of the wheels, each support leg consists of a supporting disc, a support leg, a transmission mechanism, a speed change mechanism, a transmission rod and a handle, and the height of the support leg in each support leg is two thirds of the sum of the thickness of the trailer frame and the diameter of the wheel;
the trailer frame is connected with the wheels through the suspension, a main shaft is arranged in the suspension, wheel hubs are mounted at two ends of the main shaft, the wheels are sleeved on the wheel hubs, and air shock absorbers are symmetrically arranged at the front ends of the main shaft.
Preferably, the both sides of main shaft all are equipped with the connecting plate, and the clamp has been cup jointed to the junction of connecting plate and main shaft, the connecting plate adopts the plate spring concatenation to form, and the plate spring in the connecting plate is made into plate spring by a plurality of blades of a plurality of stacks together, and the blade word shortens gradually from bottom to top, the whole arc component that is of connecting plate.
Preferably, the control arm is installed to the end of connecting plate, and goes up surface one side pin joint of control arm and have the pull rod, the end pin joint of pull rod is on the clamp, the bottom of going up the control arm is connected with the linking arm jointly.
Preferably, the connecting arm is symmetrically provided with air springs, the output end of each air spring is connected with a longitudinal push rod, the top of each longitudinal push rod is sleeved with a transverse push rod, and the transverse push rods are perpendicular to the longitudinal push rods.
Preferably, the tail end of the transverse push rod is connected with a braking mechanism, and the braking mechanism is attached to the inner side of the hub
Preferably, the air damper comprises a rubber buffer block, a spring, a protective sleeve, an external impact block, a damper piston and a damper bottom valve.
Preferably, the pull rod is a rod with a ball head shell, the ball head of the steering main rod is arranged in the ball head shell, the ball head is hinged with the edge of a shaft hole of the ball head shell through a ball head seat at the front end of the ball head shell, and a roller pin between the ball head seat and the steering main rod is embedded in an inner hole surface groove of the ball head seat
Preferably, the air damper comprises a rubber air bag, an upper cover plate, a base and other components, and the air damper is internally filled with compressed gas, wherein the rubber air bag is an important component of the air spring and is formed by vulcanizing an inner rubber layer, an outer rubber layer, a cord layer and a steel wire ring.
Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) in the invention, the air spring can have supporting force when being installed by adding the connecting plate at the bottom of the air suspension, the air spring is prevented from being in an unstable state in the air suspension, the acting force of the air spring is concentrated at the connecting point when the air spring is bumpy, so that the connecting point is deformed and cracked, the connecting plate provides a supporting force for the air spring, the connecting plate adopts an elastic structure of a plate spring, the plate spring is long circular arc spring steel with a rectangular cross section, in the most common plate spring configuration, the center of an arc provides the position of a shaft, a ring formed at any end is attached to a vehicle chassis, for a very heavy vehicle, the plate spring can be made of a plurality of blades which are laminated together and usually has gradually shortened blades, the plate spring can be used for positioning and has certain damping and spring functions, and the plate spring can be directly connected to frames at two ends, or directly at one end, usually the front end, and the other end connected by a shackle, a short swing arm, the tightness giving the tendency of the blade to stretch when compressed, making the elasticity softer. Some springs terminate in a recessed end, called the scoop end, for carrying the rotating member, which can be cushioned by the leaf spring to eliminate instability.
(2) The invention also provides a brake mechanism on the suspension system, which can brake, wherein the service brake chamber of the double-chamber brake chamber of the brake system is acted by air pressure on the membrane to push the push rod, the parking chamber is acted by the compression spring to push the push rod, the selection decision factor of the single-chamber air chamber and the double-chamber air chamber is whether the bridge is set with parking brake, the parking brake of the air brake system is realized by the compression spring of the double-chamber air chamber, namely, the parking brake can be realized only by the double-chamber air chamber. The single-cavity brake air chamber only has a service brake cavity, and parking brake cannot be realized.
Drawings
FIG. 1 is a schematic view of a trailer according to the present invention;
FIG. 2 is a schematic illustration of a suspension system for a trailer according to the present invention;
FIG. 3 is a front view of a suspension system of a trailer of the present invention;
FIG. 4 is a schematic top view of a suspension system for a trailer according to the present invention;
FIG. 5 is a rear view of a suspension system of a trailer of the present invention;
FIG. 6 is a left side view of the suspension system of a trailer of the present invention;
fig. 7 is a schematic view of an air spring in a suspension system for a trailer according to the present invention.
The corresponding relationship between the reference numbers of the figures and the names of the components in the figures is as follows: 1. a trailer frame; 2. a cross beam; 3. a suspension; 4. a tow pin; 5. a support leg; 6. a wheel; 7. a pull rod; 8. an upper control arm; 9. a connecting plate; 10. a main shaft; 11. a transverse push rod; 12. An air damper; 13. a hub; 14. a connecting arm; 15. an air spring; 16. clamping a hoop; 17. a longitudinal push rod.
Detailed Description
The invention is further described below in connection with specific embodiments of the invention.
In the figure 1, a trailer comprises a trailer frame 1, a towing pin 4 is arranged at the front end of the trailer frame 1, the towing pin 4 is an important connecting part for connecting the semitrailer and the tractor together and bearing towing force, when a vehicle group starts, brakes or runs on a slope, the impact force applied to the vehicle group is larger, so that the vehicle group has enough strength and toughness, meanwhile, the towing pin and a saddle frequently impact each other and generate relative movement, so that the connecting surface needs to be wear-resistant, so that the vehicle group has higher hardness, cross beams 2 are welded between the inner walls of the trailer frame 1 at equal intervals along the width direction of the trailer frame 1, the strength of the trailer frame 1 is increased through the cross beams 2, the integrity of the trailer frame 1 is increased through the cross beams 2, at least one group of wheels 6 is symmetrically arranged at the center of the trailer frame 1, support legs 5 are arranged in front of the wheels 6, and the support legs 5 are composed of supporting disks and supporting legs, The semi-trailer comprises a transmission mechanism, a speed change mechanism, a transmission rod, a handle and the like, wherein the transmission mechanism, the speed change mechanism, the transmission rod, the handle and the like are arranged at the front end of the semi-trailer and are used for supporting the semi-trailer to park after a tractor and the semi-trailer are disconnected;
in fig. 1-6, a suspension system of a trailer comprises a suspension 3, the suspension 3 connects a trailer frame 1 with a wheel 6, the suspension 3 contains a spindle 10, the spindle 10 is used for connecting a hub 13 and providing a mounting point for a brake mechanism, both ends of the spindle 10 are provided with hubs 13, the hubs 13 are used for sleeving tires, the wheel 6 is sleeved on the hubs 13, the front end of the spindle 10 is symmetrically provided with an air damper 12, the air damper 12 is a damping device utilizing air viscosity, and unlike a common damper, a damping medium is air, so that some defects of liquid viscous damping can be overcome, as the air has larger compressibility and can bear larger displacement, the air is contained in a flexible bellows box and can provide damping in both vertical and horizontal directions, and compared with liquid, the viscosity of the air is not large along with temperature change, thus the performance is more stable.
In the diagrams 1 to 6, the two sides of the spindle 10 are both provided with the connecting plates 9, the connecting clamp 16 is sleeved at the connecting part of the connecting plates 9 and the spindle 10, the connecting plates 9 are formed by splicing plate springs, the connecting plates 9 can be made into plate springs by a plurality of blades which are laminated together, the plate springs generally have blades which are gradually shortened, the plate springs can be used for positioning and have damping and spring functions to a certain degree, and the connecting plates 9 are movably connected through the clamp 16.
In fig. 1-6, the end of the connecting plate 9 is fitted with an upper control arm 8, the upper control arm 8 acting as a guide and force-transmitting element of the suspension system of the vehicle, transmitting the various forces acting on the wheel to the body, meanwhile, the wheels are ensured to move according to a certain track, the control arms elastically connect the wheels and the vehicle body together through spherical hinges or bushings respectively, and one side of the outer surface of the upper control arm 8 is pin-connected with a pull rod 7, the tail end of the pull rod 7 is pin-connected with a clamp 16, the bottom ends of the upper control arms 8 are jointly connected with a connecting arm 14, the pull rod 7 is provided with a ball head shell, a ball head of the steering main shaft is arranged in the ball head shell, the ball head is hinged with the shaft hole edge of the ball head shell through a ball head seat at the front end of the ball head, a roller pin between the ball head seat and the steering main shaft is embedded in a groove of the inner hole surface of the ball head seat, and the pull rod 7 has the characteristics of reducing the wear of the ball head, improving the tensile strength of the main shaft and the like.
In fig. 7, air springs 15 are symmetrically arranged on a connecting arm 14, an output end of each air spring 15 is connected with a longitudinal push rod 17, the top of each longitudinal push rod 17 is sleeved with a transverse push rod 11, each transverse push rod 11 is perpendicular to the corresponding longitudinal push rod 17, each air damper 12 internally comprises a rubber buffer block, a spring, a protective sleeve, an external impact block, a damper piston and a damper bottom valve, each air damper 12 is a damping device utilizing air viscosity, and a damping medium of each air damper is air, which is different from a common damper.
In the diagrams 1-7, the end of the transverse push rod 11 is connected with a brake mechanism, the brake mechanism is attached to the inner side of the hub 13, the transverse push rod 11 is an independent suspension of the wheel 6 swinging in the transverse plane of the automobile, and the transverse push rod has the advantages of simple structure, high roll center and strong roll resistance.
In fig. 1 to 7, the air damper 12 includes a rubber bladder, an upper cover plate, a base, etc., and the air damper 12 is filled with compressed air therein, wherein the rubber bladder is an important part of the air spring and is formed by vulcanizing an inner rubber layer, an outer rubber layer, a cord layer and a bead ring.
The working principle is as follows: the whole device is connected with a trailer frame 1 through an upper control arm 8, a wheel 6 and a hub 13 are installed, the suspension effect is completed through the matching of all parts in the device, wherein the upper control arm 8 is used as a guide and force transmission element of an automobile suspension system, various forces acting on the wheel are transmitted to an automobile body, the wheel is ensured to move according to a certain track, the wheel and the automobile body are respectively and elastically connected together through a ball joint or a bush by the control arm, a pull rod 7 is provided with a ball head shell, a ball head of a steering main shaft is arranged in the ball head shell, the ball head is hinged with the shaft hole edge of the ball head shell through a ball head seat at the front end of the ball head shell, a roller pin between the ball head seat and the steering main shaft is embedded in an inner hole surface groove of the ball head seat, the pull rod 7 has the characteristics of reducing the wear of the ball head, improving the tensile strength of the main shaft and the like, an air shock absorber 12 is a shock absorber utilizing air viscosity, and is different from a damping medium of the common shock absorber, the air spring can bear large displacement due to large compressibility of air, the air is contained in the flexible corrugated box and can provide damping in the vertical and horizontal directions, and compared with liquid, the viscosity of the air is not changed greatly along with temperature, so that the performance is stable, the air spring can have supporting force when being installed by adding the connecting plate at the bottom of the air suspension, the air spring 15 is prevented from being in an unstable state in the air suspension, the acting force of the air spring is concentrated at the connecting point when the air spring is bumped, so that the connecting point is deformed and cracked, and the air spring 15 is provided with a supporting force through the connecting plate.
While the invention has been described in further detail in connection with specific embodiments thereof, it will be understood that the invention is not limited thereto, and that various other modifications and substitutions may be made by those skilled in the art without departing from the spirit of the invention, which should be considered to be within the scope of the invention as defined by the appended claims.

Claims (9)

1. The utility model provides a trailer, includes trailer frame (1), the front end of trailer frame (1) is equipped with towing pin (4), and has crossbeam (2) along trailer frame (1) width direction equidistance welding between the inner wall of trailer frame (1), and the center department symmetry of trailer frame (1) is equipped with a set of wheel (6) at least, and the place ahead of wheel (6) is equipped with stabilizer blade (5), stabilizer blade (5) comprise spider, supporting leg, drive mechanism, speed change mechanism, transfer line and hand (hold), and supporting leg height in stabilizer blade (5) is two-thirds of the thickness of trailer frame (1) and wheel (6) diameter sum.
2. Suspension system of a trailer, comprising a suspension (3), characterized in that: the trailer is characterized in that the suspension (3) is used for connecting the trailer frame (1) with the wheels (6), a main shaft (10) is arranged in the suspension (3), wheel hubs (13) are mounted at two ends of the main shaft (10), the wheels (6) are sleeved on the wheel hubs (13), and air shock absorbers (12) are symmetrically arranged at the front ends of the main shaft (10).
3. A suspension system for a trailer as claimed in claim 2, wherein: the both sides of main shaft (10) all are equipped with connecting plate (9), and the junction of connecting plate (9) and main shaft (10) has cup jointed clamp (16), connecting plate (9) adopt the concatenation of leaf spring to form, and the leaf spring in connecting plate (9) is made into the leaf spring by a plurality of blades that a plurality of laminatings are together, and the blade word shortens gradually from top to bottom, connecting plate (9) wholly is the arc component.
4. A suspension system for a trailer as claimed in claim 2, wherein: control arm (8) are installed to the end of connecting plate (9), and go up one side pin joint of surface of control arm (8) and have pull rod (7), the end pin joint of pull rod (7) is on clamp (16), the bottom of going up control arm (8) is connected with linking arm (14) jointly.
5. A suspension system for a trailer as claimed in claim 3, wherein: air springs (15) are symmetrically arranged on the connecting arm (14), the output end of each air spring (15) is connected with a longitudinal push rod (17), the top of each longitudinal push rod (17) is sleeved with a transverse push rod (11), and the transverse push rods (11) are perpendicular to the longitudinal push rods (17).
6. The suspension system of a trailer as in claim 5, wherein: the tail end of the transverse push rod (11) is connected with a braking mechanism, and the braking mechanism is attached to the inner side of the hub (13).
7. A suspension system for a trailer as claimed in claim 2, wherein: the air damper (12) comprises a rubber buffer block, a spring, a protective sleeve, an external impact block, a damper piston and a damper bottom valve.
8. The suspension system of a trailer as in claim 4, wherein: the pull rod (7) is a rod with a ball head shell, a ball head of the steering main rod is arranged in the ball head shell, the ball head is hinged with the edge of a shaft hole of the ball head shell through a ball head seat at the front end of the ball head shell, and a roller pin between the ball head seat and the steering main shaft is embedded in an inner hole surface groove of the ball head seat.
9. A suspension system for a trailer as claimed in claim 2, wherein: the air damper (12) comprises a rubber air bag, an upper cover plate, a base and the like, and the air damper (12) is internally filled with compressed gas, wherein the rubber air bag is an important part of the air spring and is formed by vulcanizing an inner rubber layer, an outer rubber layer, a cord layer and a steel wire ring.
CN202110495836.3A 2021-05-07 2021-05-07 Trailer and suspension system thereof Withdrawn CN113335006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110495836.3A CN113335006A (en) 2021-05-07 2021-05-07 Trailer and suspension system thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110495836.3A CN113335006A (en) 2021-05-07 2021-05-07 Trailer and suspension system thereof

Publications (1)

Publication Number Publication Date
CN113335006A true CN113335006A (en) 2021-09-03

Family

ID=77469854

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110495836.3A Withdrawn CN113335006A (en) 2021-05-07 2021-05-07 Trailer and suspension system thereof

Country Status (1)

Country Link
CN (1) CN113335006A (en)

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WW01 Invention patent application withdrawn after publication

Application publication date: 20210903

WW01 Invention patent application withdrawn after publication