CN116215433B

CN116215433B - Semitrailer based on expansion fluid buffering

Info

Publication number: CN116215433B
Application number: CN202310512130.2A
Authority: CN
Inventors: 张成泽; 张成前
Original assignee: Shijiazhuang Jinfeng Special Vehicle Co ltd
Current assignee: Shijiazhuang Jinfeng Special Vehicle Co ltd
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2023-07-04
Anticipated expiration: 2043-05-09
Also published as: CN116215433A

Abstract

The invention provides a semitrailer based on expansion fluid buffering, which belongs to the technical field of trailers and comprises a carriage underframe, a carriage body and a buffering mechanism, wherein the carriage body is arranged on the carriage underframe; the buffer shell is of a closed structure and is arranged on one side of the first distribution frame, which faces the cab; the second distributor is arranged on one side of the buffer shell, which faces the cab; an expandable fluid is filled in the buffer housing; the buffer net is arranged in the buffer shell along the running direction of the vertical semitrailer and is in a loose state in a natural state; a plurality of impact sub-layers are arranged on the buffer net; the pressure release assembly is arranged on the buffer shell. The buffer mechanism can reduce the threat of forward impact cargoes to the safety of personnel in a cab.

Description

Semitrailer based on expansion fluid buffering

Technical Field

The invention belongs to the technical field of trailers, and particularly relates to a semitrailer based on expansion fluid buffering.

Background

The semitrailer is a trailer with axles placed behind the center of gravity of the vehicle (when the vehicle is evenly loaded) and equipped with hitch devices that can transfer horizontal and vertical forces to the tractor, a heavy transportation vehicle that is connected to the semitrailer head by towing pins.

The existing semitrailer has the defects that the tonnage of the transported goods is relatively large, the goods have relatively large inertia in the running process, the front part of the semitrailer is blocked only by a steel baffle plate, and a relatively powerful blocking buffer structure is lacked, so that the operations such as braking and turning have relatively high danger, especially when the goods such as steel pipes and sectional materials are transported, the goods such as the steel pipes can be moved forwards due to the emergency braking, and if the impact of the forward movement of the goods is too large, the risks of penetrating the baffle plate and threatening the safety of a cab exist.

Disclosure of Invention

The invention aims to provide a semitrailer based on expansion fluid buffering, which aims to solve the technical problem that the front part of the semitrailer in the prior art lacks a powerful blocking buffering structure.

In order to achieve the above purpose, the invention adopts the following technical scheme: the semitrailer based on the expansion fluid buffering comprises a carriage underframe, a carriage body and a buffering mechanism, wherein the carriage body is arranged on the carriage underframe; the buffer mechanism is arranged at the front end of the carriage body and is connected with the carriage underframe; the buffer mechanism comprises a first distribution frame, a buffer shell, a second distribution frame, an expandable fluid, a buffer net, a plurality of impact sub-assemblies and a pressure release assembly, wherein the first distribution frame is arranged at the front end of the carriage body and is connected with the carriage underframe; the buffer shell is of a closed structure and is arranged on one side of the first distribution frame, which faces the cab; the second distributor is arranged on one side of the buffer shell, which faces the cab, so as to be propped against the cab when being impacted; an expandable fluid is filled in the buffer housing; the buffer net is arranged in the buffer shell along the running direction of the vertical semitrailer and is in a loose state in a natural state; a plurality of impact sub-layers are arranged on the buffer net; the pressure release assembly is arranged on the buffer shell.

In combination with the above technical solution, in one possible implementation manner, an edge of the buffer net is connected with a side of the buffer shell facing the first distribution frame, and a supporting seat is arranged in the middle of the buffer shell, and the middle of the buffer net is connected with the supporting seat, so that the buffer net is suspended in the expandable fluid.

In combination with the above solution, in one possible implementation, the density of the impactor is less than the density of the expanding fluid.

In combination with the above technical solution, in one possible implementation manner, the impactor includes a hollow shell, a connecting lug and an extending column, the hollow shell is internally provided with a hollow structure or a light filler, the connecting lug is arranged on the hollow shell and is connected with the buffer net, one end of the extending column is connected with the hollow shell, and the other end of the extending column extends outwards.

In combination with the above technical solution, in one possible implementation manner, the expandable fluid is a suspension, and the buffer mechanism further includes an agitation assembly, where the agitation assembly is disposed on the buffer housing; the stirring assembly is a stirring blade assembly, a swing arm stirring assembly or a flushing assembly.

In combination with the above technical solution, in one possible implementation manner, the stirring assembly includes a stirring plate and a driver, the stirring plate is horizontally disposed at the lower portion of the buffer housing, the driver is disposed in the buffer housing and connected with the stirring plate, so as to drive the stirring plate to move up and down, so as to stir the expandable fluid, and the driver is an air cylinder, a hydraulic cylinder or an electric telescopic rod.

In combination with the above technical solution, in one possible implementation manner, the first distribution frame and the second distribution frame are each a plate-like structure, a planar frame structure or a lattice structure; the lower part of the first distribution frame is connected with the carriage underframe, and the upper part of the first distribution frame is connected with the carriage underframe through a diagonal brace; the lower part of the second distributing frame is connected with the carriage underframe.

In combination with the above technical solution, in one possible implementation manner, the buffer mechanism further includes a collecting bag, and the collecting bag is connected with the pressure relief assembly, so as to collect the expandable fluid overflowed from the pressure relief assembly.

In combination with the above technical solution, in one possible implementation manner, the pressure relief assembly is disposed on the upper portion of the buffer housing, and the pressure relief assembly is a pressure relief valve or a fracture pressure relief assembly.

In combination with the above technical solution, in one possible implementation manner, the buffer housing is of a rectangular box-shaped structure, and four corners are connected with the first distribution frame through the impact fracture connection structure, and the impact fracture connection structure can be disconnected after bearing rated impact or rated tension.

The semitrailer based on the expandable fluid buffer has the beneficial effects that: compared with the prior art, the invention can form the buffer mechanism at the front part of the carriage body of the semitrailer through the cooperation of the first distribution frame, the buffer shell, the second distribution frame, the expansive fluid, the buffer net, the impact sub-bodies and the pressure relief assembly, thereby playing a good role in blocking, intercepting and dissipating energy, reducing the kinetic energy of long-strip goods such as steel pipes, sectional materials and the like when the goods impact forwards, further reducing the threat of the goods to the safety of personnel in the cab and ensuring that the cab is better protected.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic side view of a semitrailer based on an inflatable fluid cushion according to an embodiment of the present invention;

FIG. 2 is a schematic side cross-sectional view of a cushioning mechanism portion of a semi-trailer based on inflatable fluid cushioning provided by an embodiment of the present invention;

fig. 3 is a schematic side sectional structure of an impact sub-portion of a semitrailer based on an inflatable fluid buffer according to an embodiment of the present invention.

Wherein, each reference sign is as follows in the figure:

10. a carriage underframe; 20. a cabin body;

30. a buffer mechanism; 31. a first distribution frame; 32. a buffer housing; 321. a support base;

33. a second distribution frame; 34. an expanding fluid; 35. a buffer net;

36. an impactor; 361. a hollow shell; 362. a connecting lug; 363. an extension column;

37. a pressure relief assembly; 38. an agitation assembly; 39. the capsules were collected.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only some, but not all, of the embodiments of the present application, and that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It should be further noted that the drawings and embodiments of the present invention mainly describe the concept of the present invention, and on the basis of the concept, some specific forms and arrangements of connection relations, position relations, power units, power supply systems, hydraulic systems, control systems, etc. may not be completely described, but those skilled in the art may implement the specific forms and arrangements described above in a well-known manner on the premise of understanding the concept of the present invention.

When an element is referred to as being "fixed" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

In the description of the present invention, the meaning of "a plurality" means two or more, and the meaning of "a number" means one or more, unless specifically defined otherwise.

The semitrailer based on the inflatable fluid buffer provided by the invention will now be described.

As shown in fig. 1 and 2, a first embodiment of the present invention provides a semitrailer based on inflatable fluid cushioning, comprising a cabin underframe 10, a cabin body 20 and a cushioning mechanism 30, wherein the cabin body 20 is arranged on the cabin underframe 10; the buffer mechanism 30 is arranged at the front end of the carriage body 20 and is connected with the carriage underframe 10; the buffer mechanism 30 comprises a first distribution frame 31, a buffer shell 32, a second distribution frame 33, an inflatable fluid 34, a buffer net 35, a plurality of impact pieces 36 and a pressure release assembly 37, wherein the first distribution frame 31 is arranged at the front end of the carriage body 20 and is connected with the carriage underframe 10; the buffer housing 32 is of a closed structure and is arranged on one side of the first distribution frame 31 facing the cab; the second distributing frame 33 is arranged at one side of the buffer shell 32 facing the cab, so as to be propped against the cab when being impacted, so that the stress is uniformly distributed at the rear part of the whole cab; an expandable fluid 34 fills the buffer housing 32; the buffer net 35 is provided in the buffer housing 32 in a direction of travel of the vertical semitrailer, and is in a relaxed state in a natural state; a plurality of impact elements 36 are arranged on the buffer net 35; a pressure relief assembly 37 is provided on the buffer housing 32 to open for pressure relief when the pressure inside the buffer housing 32 exceeds a rated value range.

The expansion fluid is one of non-Newtonian fluids, and is characterized in that the viscosity increases along with the increase of the shear rate, namely solidification phenomenon occurs after impact, liquefaction occurs again after the impact force exceeds a certain threshold, and common expansion fluids such as starch solution, slurry, polyethylene, nylon 6, polyester, rubber solution, engineering plastics and the like are all expansion fluids.

When the transported goods move forwards under the action of inertia, the first distribution frame 31, the buffer shell 32, the second distribution frame 33, the expansion fluid 34 and the buffer net 35 play a role of blocking, specifically, the first distribution frame 31 plays a role of blocking firstly, if the goods continue to move forwards, the goods pass through the first distribution frame 31 and then contact the buffer shell 32, if the buffer shell 32 deforms or the expansion fluid 34 penetrated through the buffer shell is hardened under the action of impact, the effect of blocking can be achieved, a considerable part of kinetic energy of the goods can be consumed, meanwhile, the buffer net 35 moves forwards or backwards under the drive of the impact piece 36, so that the expansion fluid 34 near the impact piece 36 and the buffer net 35 starts to harden under the action of impact, namely, before the goods reach the position, the impact resistance and the energy dissipation effect can be improved, and then the buffer net 35 plays a certain role, if the goods continue to impact forwards at the moment, the buffer shell 32 is deformed, the second distribution frame 33 is propped against the cab, and the structure of the second distribution frame 33 can be designed in advance, so that the damage to the cab can be reduced, and the personnel can be injured in the cab. If the impact force of the cargo impacting the buffer housing 32 is too large, the expandable fluid 34 will liquefy after hardening, and meanwhile, the pressure inside the buffer housing 32 is higher than the rated value range of the pressure relief assembly 37, so that the pressure relief assembly 37 is opened and relieved, and the pressure relief and energy dissipation can be outwards realized while explosion is avoided.

Compared with the prior art, the semitrailer based on the expansion fluid buffering provided by the embodiment has the advantages that the first distribution frame 31, the buffer shell 32, the second distribution frame 33, the expansion fluid 34, the buffer net 35, the plurality of impact members 36 and the pressure relief assembly 37 are matched, the buffer mechanism 30 can be formed at the front part of the carriage body 20 of the semitrailer to better block and intercept and dissipate energy, kinetic energy of long-strip goods such as steel pipes and sectional materials during forward impact is reduced, accordingly threat of the goods to personnel safety in a cab is reduced, and the cab is better protected.

As shown in fig. 1 to 3, a specific embodiment of the present invention provided on the basis of the first embodiment is as follows:

the buffer housing 32 is preferably made of a metal material, a carbon fiber material or other composite material having excellent tear resistance to reduce the possibility of an impact explosion, thereby improving the buffer performance.

As shown in fig. 2, the edge of the buffer net 35 is connected to the side of the buffer housing 32 facing the first distribution frame 31, and a support seat 321 is provided at the middle of the buffer housing 32, and the middle of the buffer net 35 is connected to the support seat 321, so that the buffer net 35 is suspended in the expandable fluid 34. Therefore, the buffer net 35 and the impact piece 36 can be prevented from being directly contacted with the buffer shell 32, abnormal sound caused by collision in running can be avoided, abrasion of the buffer net 35 can be avoided, meanwhile, the buffer net 35 is always in a separation state with the buffer shell 32, and can be used as an independent interception way when collision occurs, so that the effects of buffering and interception are improved.

The density of the impactor 36 is less than the density of the expanding fluid 34. In this way, when the impact of the following goods is applied, the impact piece 36 drives the buffer net 35 to move backwards, on one hand, the impact piece 36 and the expansion fluid 34 near the buffer net 35 can be hardened due to the impact of rapid displacement, namely, the hardening is started before the goods reach the position, so that the impact resistance and the energy dissipation effect are improved, on the other hand, the buffer net 35 can move backwards to be in contact with the goods moving forwards faster, and further moves forwards under the driving of the goods, so that the impact piece 36 and the expansion fluid 34 near the buffer net 35 are hardened due to the impact again, and the impact resistance and the energy dissipation effect are further improved.

As shown in fig. 3, the impactor 36 includes a hollow shell 361, a connecting lug 362 and an extension column 363, wherein the hollow shell 361 is internally provided with a hollow structure or a lightweight filler to ensure that the overall density of the impactor 36 is lower than that of the expandable fluid 34, the connecting lug 362 is arranged on the hollow shell 361 and connected with the buffer net 35, and one end of the extension column 363 is connected with the hollow shell 361 and the other end extends outwards to increase the contact area with the expandable fluid 34.

As shown in fig. 2, the expanding fluid 34 is a suspension, and the buffer mechanism 30 further includes an agitation assembly 38, the agitation assembly 38 being disposed on the buffer housing 32; the agitation assembly 38 is a combination of one or more of a stirring blade assembly, a swing arm stirring assembly, or a flush assembly, among others. The suspension is a liquid state that precipitates after standing, such as starch solution, slurry, etc., and the stirring assembly 38 can stir the expandable fluid 34, so that the expandable fluid 34 is uniformly distributed and in a good state, and failure is avoided.

As shown in fig. 2, the agitation assembly 38 includes an agitation plate horizontally disposed at a lower portion of the buffer housing 32, and a driver, which is provided in the buffer housing 32 and connected to the agitation plate to move up and down to agitate the expandable fluid 34, in the form of an air cylinder, a hydraulic cylinder, an electric telescopic rod, or the like. This can avoid problems such as leakage of the expandable fluid 34 due to seal failure or the like by moving parts passing through the damper housing 32.

As shown in fig. 2, the first distribution frame 31 and the second distribution frame 33 are each of a plate-like structure, a planar frame structure, or a lattice structure to better withstand impact and distribution stress; the lower part of the first distribution frame 31 is connected with the carriage underframe 10, and the upper part is connected with the carriage underframe 10 through a diagonal brace to ensure enough connection strength; the second distribution frame 33 is connected at the lower portion thereof to the cabin underframe 10 to reduce the load of the buffer housing 32 during normal running.

Further, as shown in fig. 2, the buffer mechanism 30 further includes a collecting bag 39, where the collecting bag 39 is connected to the pressure release assembly 37 to collect the expandable fluid 34 overflowed from the pressure release assembly 37, so as to avoid the expandable fluid 34 from escaping to the environment or causing injury to personnel and equipment.

The pressure relief assembly 37 is disposed on the upper portion of the buffer housing 32, and the pressure relief assembly 37 is a pressure relief valve or a fracture pressure relief assembly. The pressure release valve can be opened when the pressure reaches a rated value, and closed after pressure release, so that the pressure release valve can be recycled; the fracture pressure release assembly can fracture when the pressure reaches the rated value, and part of the expansion fluid 34 in the buffer shell 32 is released, so that the structure is simple and effective, faults are not easy to occur, and the pressure release assembly is suitable for releasing the pressure in a large amount in a short time.

The buffer shell 32 is of a rectangular box-shaped structure, four corners of the buffer shell are connected with the first distribution frame 31 through the impact fracture connection structure, the impact fracture connection structure can be disconnected after bearing rated impact or rated tension, so that when the buffer shell is impacted, if the impact does not reach the rated impact of the impact fracture connection structure, the connection points cannot be disconnected, the buffer shell 32 is only deformed to block and dissipate energy, and when the impact is greater than the rated impact, the buffer shell can be disconnected again, so that the goods drive the whole buffer mechanism 30 to move forwards, the goods impacted forwards sufficiently dissipate energy, and the risk that the goods directly pass through the buffer mechanism 30 is reduced. At the same time, the second distributing frame 33 and the carriage underframe 10 can also be connected through an impact fracture connection structure so as to fully dissipate energy of goods which are impacted forward as much as possible.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.

Claims

1. A semitrailer based on inflatable fluid cushioning, comprising:

a cabin underframe (10);

a carriage body (20) provided on the carriage chassis (10);

the buffer mechanism (30) is arranged at the front end of the carriage body (20) and is connected with the carriage underframe (10);

wherein the buffer mechanism (30) comprises:

the first distribution frame (31) is arranged at the front end of the carriage body (20) and is connected with the carriage underframe (10);

the buffer shell (32) is of a closed structure and is arranged on one side of the first distribution frame (31) facing the cab;

a second distribution frame (33) arranged on one side of the buffer shell (32) facing the cab so as to be propped against the cab when being impacted;

an expandable fluid (34) filled in the buffer case (32);

the buffer net (35) is arranged in the buffer shell (32) along the running direction of the vertical semitrailer and is in a loose state in a natural state;

a plurality of impact elements (36) arranged on the buffer mesh (35);

and the pressure release assembly (37) is arranged on the buffer shell (32).

2. The inflatable fluid cushion based semi-trailer of claim 1, wherein: the edge of the buffer net (35) is connected with one side of the buffer shell (32) facing the first distribution frame (31), a supporting seat (321) is arranged in the middle of the buffer shell (32), and the middle of the buffer net (35) is connected with the supporting seat (321) so that the buffer net (35) is suspended in the expandable fluid (34).

3. The inflatable fluid cushion based semi-trailer of claim 2, wherein: the density of the impactor (36) is less than the density of the expanding fluid (34).

4. A semitrailer based on an inflatable fluid cushion as claimed in claim 3, wherein: the impact device comprises an impact body (36) and a connecting lug (362) and an extending column (363), wherein the hollow shell (361) is internally provided with a hollow structure or a light filler, the connecting lug (362) is arranged on the hollow shell (361) and is connected with a buffer net (35), one end of the extending column (363) is connected with the hollow shell (361), and the other end of the extending column extends outwards.

5. The inflatable fluid cushion based semi-trailer of claim 1, wherein: the expandable fluid (34) is a suspension, the buffer mechanism (30) further comprises an agitating assembly (38), and the agitating assembly (38) is arranged on the buffer shell (32); the stirring assembly (38) is a stirring blade assembly, a swing arm stirring assembly or a flushing assembly.

6. The inflatable fluid cushion based semi-trailer of claim 5, wherein: the stirring assembly (38) comprises a stirring plate and a driver, wherein the stirring plate is horizontally arranged at the lower part of the buffer shell (32), the driver is arranged in the buffer shell (32) and is connected with the stirring plate so as to drive the stirring plate to move up and down to stir the expandable fluid (34), and the driver is an air cylinder, a hydraulic cylinder or an electric telescopic rod.

7. The inflatable fluid cushion based semi-trailer of claim 1, wherein: the first distribution frame (31) and the second distribution frame (33) are of a plate-shaped structure, a plane frame structure or a lattice structure; the lower part of the first distribution frame (31) is connected with the carriage underframe (10), and the upper part of the first distribution frame is connected with the carriage underframe (10) through a diagonal brace; the lower part of the second distribution frame (33) is connected with the carriage underframe (10).

8. The inflatable fluid cushion based semi-trailer of claim 1, wherein: the buffer mechanism (30) further comprises a collecting bag (39), and the collecting bag (39) is connected with the pressure relief assembly (37) to collect the expandable fluid (34) overflowed from the pressure relief assembly (37).

9. The inflatable fluid cushion based semi-trailer of claim 1, wherein: the pressure relief assembly (37) is arranged on the upper portion of the buffer shell (32), and the pressure relief assembly (37) is a pressure relief valve or a fracture pressure relief assembly.

10. The inflatable fluid cushion based semi-trailer of claim 1, wherein: the buffer shell (32) is of a rectangular box-shaped structure, four corners of the buffer shell are connected with the first distribution frame (31) through impact fracture connection structures, and the impact fracture connection structures can be broken after bearing rated impact or rated tensile force.