Supporting framework of semitrailer tank body and liquid tank semitrailer

Abstract

The invention discloses a supporting framework of a semitrailer tank body and a liquid tank semitrailer, and particularly relates to the technical field of liquid tank trucks, the supporting framework comprises a bottom supporting device, the bottom of the tank body is fixedly installed on the bottom supporting device, the bottom supporting device comprises a traction seat and a rear saddle, the traction seat is used for supporting the front portion of the tank body, and the rear saddle is used for supporting the rear portion of the tank body; the top shoulder pad cross beam is fixed to the top of the tank body in the axial direction of the tank body, and the length of the top shoulder pad cross beam is the same as that of the tank body; and the multiple reinforcing rings are fixedly connected to the inner side wall of the tank body in the axial direction of the tank body. The strength, rigidity and bearing capacity of the tank body of the aluminum alloy liquid tank semitrailer can be improved, the gravity center of the liquid tank truck can be lowered, and the situations of tank body deformation, cracking, rollover and the like possibly occurring in the using process of the tank body are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of liquid tank trucks, in particular to a supporting frame of a semitrailer tank body and a liquid tank semitrailer. Background Art

[0002] Lightweight tank trucks can increase loading capacity and achieve greater economic benefits, and can reduce fuel consumption and improve economy when empty.

[0003] At present, the method of lightweighting the tank body of the liquid tank semi-trailer is to use lightweight aluminum alloy to make the tank body, and at the same time reduce the wall thickness of the tank body and wave-breaking plate. However, the strength of aluminum alloy materials is lower than that of carbon steel and stainless steel materials. The cylinder body and wave-breaking plate made of aluminum alloy are soft, easy to deform, and have poor torsion resistance after forming. In addition, after the wall thickness is reduced, no other reinforcement structure is set inside the cylinder body to compensate for the reduction in cylinder strength and rigidity caused by the reduction in wall thickness. As a result, the traditional structure of the liquid tank truck tank body made of aluminum alloy will experience serious deformation, cracking of the weld between the wave-breaking plate and the cylinder body, and other failure phenomena during actual operation, which seriously restricts the safety of aluminum alloy tank trucks. Summary of the invention

[0004] The purpose of the present invention is to provide a supporting frame for a semi-trailer tank body and a liquid tank semi-trailer to solve the problems existing in the above-mentioned prior art, which can improve the strength, rigidity and load-bearing capacity of the tank body of the aluminum alloy liquid tank semi-trailer and lower the center of gravity of the liquid tank truck, thereby reducing the deformation, cracking and rollover of the tank body that may occur during use.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a supporting frame of a semi-trailer tank body, comprising: a bottom supporting device, on which the bottom of the tank body is fixedly mounted, the bottom supporting device comprising a traction seat and a rear saddle, the traction seat is used to support the front of the tank body, and the rear saddle is used to support the rear of the tank body; a top shoulder guard beam, which is fixed to the top of the tank body along the axial direction of the tank body, and the length of the top shoulder guard beam is the same as the length of the tank body; and a reinforcing ring, wherein a plurality of the reinforcing rings are fixedly connected to the inner side wall of the tank body along the axial direction of the tank body.

[0007] Preferably, the traction seat is used to connect with the tractor, and the number of the rear saddles is four, and the four rear saddles are used to connect with the vehicle frame.

[0008] Preferably, two reinforcement rings are arranged at corresponding positions of the traction seat, the reinforcement ring close to the front head of the tank body is an I-shaped reinforcement ring, and the other reinforcement ring is an inverted T-shaped reinforcement ring.

[0009] Preferably, the reinforcement rings are arranged at corresponding positions of the three rear saddles away from the rear head of the tank body, and the reinforcement rings are inverted T-shaped reinforcement rings.

[0010] Preferably, the traction seat and the rear saddle are made of aluminum alloy.

[0011] Preferably, each of the inverted T-shaped reinforcement rings is provided with an arc-shaped wave-breaking plate, and the arc-shaped wave-breaking plate is bent toward the direction of the rear head of the tank body.

[0012] Preferably, the number of the top shoulder guard beams is two, the two top shoulder guard beams are symmetrical about the axis of the tank body, and the spacing between the two top shoulder guard beams is 1-1.2m, and the height of the top shoulder guard beam is higher than the tank top valve.

[0013] Preferably, the cross-section of the top shoulder guard beam is an A-shaped cross-section.

[0014] Preferably, the top shoulder guard cross beam is made of aluminum alloy.

[0015] The present invention also provides a liquid tank semi-trailer, comprising: a tank body, a tractor, a frame and a supporting frame of the semi-trailer tank body, the tank body comprising a front cylinder and a rear cylinder, the front cylinder is fixedly connected and communicated with the rear cylinder, the front cylinder is installed on the tractor through the traction seat, and the rear cylinder is installed on the frame through the rear saddle.

[0016] Compared with the prior art, the present invention has achieved the following technical effects:

[0017] The present invention provides a support frame for a tank body of a semitrailer and a liquid tank semitrailer. A traction seat and a rear saddle at two ends of a bottom of the tank body serve as two support points to support the tank body. A reinforcement ring located in the tank body serves as an internal support and can enhance the strength and rigidity of the tank body at the traction seat and the rear saddle. At the same time, a top shoulder guard crossbeam arranged on the tank top is used to form a support frame to form various reinforcement rings as a whole, and can also effectively improve the bending stress borne by the tank body between the two support points. The support frame can effectively strengthen the tank body and can also transfer the load of the tank body between the traction seat and the rear saddle to the traction seat and the rear saddle through the top shoulder guard crossbeam, so that the force on the tank body is more reasonable. At the same time, it is avoided to arrange a beam at the bottom of the tank body, and can effectively lower the center of gravity of the tank truck and improve the stability of the tank truck during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the support frame of the semi-trailer tank body being installed on the tank body;

[0020] Figure 2 It is a front view of the supporting frame of the semi-trailer tank body installed on the tank body;

[0021] Figure 3 It is a schematic diagram of the structure of the supporting frame of the semi-trailer tank body;

[0022] Figure 4 It is a structural schematic diagram of an inverted T-shaped reinforcement ring;

[0023] Figure 5 Schematic diagram of the forces acting on the curved wave-breaking plate during braking;

[0024] Figure 6 Schematic diagram of the cross section of the top shoulder guard beam.

[0025] In the figure: 1-traction seat; 2-rear saddle; 3-top shoulder guard beam; 4-tank body; 41-front cylinder; 42-rear cylinder; 5-I-shaped reinforcement ring; 6-inverted T-shaped reinforcement ring; 7-arc wave-breaking plate; 8-frame; 9-front head; 10-rear head; 11-tank top valve. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] The purpose of the present invention is to provide a support frame for a semi-trailer tank body and a liquid tank semi-trailer to solve the problems existing in the above-mentioned prior art, improve the strength, rigidity, and load-bearing capacity of the aluminum alloy liquid tank semi-trailer tank body, lower the center of gravity of the liquid tank truck, and reduce the deformation, cracking, and rollover of the tank body that may occur during use. In order to make the above-mentioned purposes, features, and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] Example 1

[0029] This embodiment provides a support frame for a semi-trailer tank body, such as Figure 1-3 As shown, it includes: a bottom support device, the bottom of the tank body 4 is fixedly mounted on the bottom support device, the bottom support device includes a traction seat 1 and a rear saddle 2, the traction seat 1 is used to support the front of the tank body 4, and the rear saddle 2 is used to support the rear of the tank body 4; a top shoulder guard beam 3, the top shoulder guard beam 3 is fixed to the top of the tank body 4 along the axial direction of the tank body 4, and the length of the top shoulder guard beam 3 is the same as the length of the tank body 4; a reinforcing ring, a plurality of reinforcing rings are fixedly connected to the inner wall of the tank body 4 along the axial direction of the tank body 4. The traction seat 1 and the rear saddle 2 at both ends of the bottom of the tank body 4 serve as two supporting points to support the tank body 4. In order to ensure that the tank body 4 has sufficient rigidity and a small wall thickness, a reinforcing ring is provided in the tank body 4 as an internal support to form a skeleton-type reinforcement structure in the tank. The reinforcing rings at the corresponding positions of the traction seat 1 and the rear saddle 2 can enhance the strength and rigidity of the tank body 4 at the traction seat 1 and the rear saddle 2. The traction seat 1 and the rear saddle 2 are the two fulcrums of the tank body 4. The force on the tank body 4 can be simplified into a simply supported beam at both ends. According to the force characteristics of the simply supported beam, the tank body 4 between the two fulcrums will be subjected to a larger bending stress, the lower part is tensile stress, and the upper part is compressive stress. When a thin-walled container is subjected to axial compressive stress, local instability may occur. The top shoulder guard beam 3 can be used to bear the compressive stress, which can effectively avoid the possible instability of the upper part of the middle tank body 4. At the same time, the top shoulder guard beam 3 set on the tank top is used to combine the various reinforcement rings into a whole to form a support skeleton, which further effectively improves the bending stress borne by the middle tank body 4 at the two support points. The support skeleton can effectively strengthen the tank body 4 and can also transfer the load of the tank body 4 between the traction seat 1 and the rear saddle 2 to the traction seat 1 and the rear saddle 2 through the top shoulder guard beam 3, so that the force on the tank body 4 is more reasonable, the strength and rigidity of the tank body 4 are improved, the bearing capacity of the tank body 4 is effectively improved, and the deformation and cracking of the tank body 4 that may occur during the use of the tank body 4 are reduced; the top shoulder guard beam 3 is set on the top of the tank body 4, and the beam is avoided at the bottom of the tank body 4, which can effectively lower the center of gravity of the tank truck, improve the stability of the tank truck during driving, and effectively avoid the risk of the tank truck rolling over.

[0030] It is further preferred in the implementation manner of this embodiment that the fifth wheel 1 is used to connect to the tractor, the number of the rear saddles 2 is four, and the four rear saddles 2 are used to connect to the vehicle frame 8.

[0031] In the implementation of this embodiment, it is further preferred that two reinforcement rings are arranged at the corresponding positions of the traction seat 1, the reinforcement ring close to the front head 9 of the tank body 4 is an I-shaped reinforcement ring 5, and the other reinforcement ring is an inverted T-shaped reinforcement ring 6. The corresponding positions of the three rear saddles 2 far away from the rear head 10 of the tank body 4 are all provided with reinforcement rings, and the reinforcement rings are inverted T-shaped reinforcement rings 6. The I-shaped reinforcement ring 5 has a large bending and torsion section coefficient, which can effectively distribute the load transmitted by the traction seat 1 to the tank body 4 evenly. Among the four rear saddles 2, since the last rear saddle 2 is close to the rear head 10, the rear head can play a reinforcing role on this section of the cylinder. In order to reduce the weight of the tank truck, the last rear saddle 2 is not provided with a reinforcement ring. The horizontal plate of the inverted T-shaped reinforcement ring 6 is welded and fixed to the inner wall of the tank body 4, which can increase the contact area between the reinforcement ring and the tank body 4 and reduce the stress at the connection between the tank body 4 and the reinforcement ring. Preferably, the material of the I-shaped reinforcement ring 5 and the inverted T-shaped reinforcement ring 6 is aluminum alloy.

[0032] It is further preferred in the implementation manner of this embodiment that the material of the traction seat 1 and the rear saddle 2 is aluminum alloy, which can further reduce the weight.

[0033] In the implementation of this embodiment, it is further preferred that each inverted T-shaped reinforcement ring 6 is provided with an arc-shaped wave-breaking plate 7, and the arc-shaped wave-breaking plate 7 is bent toward the rear head 10 of the tank body 4. The arc-shaped wave-breaking plate 7 and the inverted T-shaped reinforcement ring 6 are fixed by welding, and the inverted T-shaped reinforcement ring 6 can provide support for the arc-shaped wave-breaking plate 7 installed thereon, effectively reducing the risk of distortion, deformation, cracking, etc. of the arc-shaped wave-breaking plate 7 under external load. Figure 4 As shown, the vertical plate of the inverted T-shaped reinforcement ring 6 is inclined at a certain angle toward the rear head 10 of the tank body 4 to facilitate the installation of the arc-shaped wave-breaking plate 7.

[0034] During the starting and braking process of the tank truck, the liquid in the tank exerts a large force on the curved wave-breaking plate 7 due to inertia. Under ideal conditions, it can be seen from simplified calculations using a physical model that the deceleration of the semitrailer during braking is much greater than the acceleration during starting. During braking, the force exerted on the curved wave-breaking plate 7 by the inertia of the liquid is forward along the axis of the tank body; when the convex surface of the curved wave-breaking plate 7 is facing the rear end of the tank body, the inertial force of the liquid during braking acts on the outer surface of the curved wave-breaking plate 7. At this time, the force exerted by the liquid on the curved wave-breaking plate 7 can be decomposed into two components, one horizontally forward and one vertically outward, such as Figure 5 As shown, the vertical outward component of force will cause the tank body to expand outward, which helps to further improve the rigidity of the tank body.

[0035] It is further preferred in the implementation of this embodiment that the number of top shoulder guard beams 3 is two, the two top shoulder guard beams 3 are symmetrical about the axis of the tank body 4, and the spacing between the two top shoulder guard beams 3 is 1-1.2m, and the height of the top shoulder guard beam 3 is higher than the tank top valve 11. The top shoulder guard beam 3 and the tank body 4 are fixed by welding, and the height of the top shoulder guard beam 3 is higher than the tank top valve 11. If the tank truck rolls over, the two top shoulder guard beams 3 can effectively protect the tank top valve 11 from being damaged.

[0036] It is further preferred in the implementation manner of this embodiment that Figure 6 As shown, the cross section of the top shoulder guard beam 3 is an A-shaped cross section, and the material of the top shoulder guard beam 3 is aluminum alloy. The top shoulder guard beam 3 is made of an A-shaped cross-section aluminum profile, and when welded with the tank body 4, it forms an over-statically determined triangular cross section with a middle band support. This cross section has extremely high strength and stability, and can effectively protect the tank top valve 11 when the tank truck accidentally rolls over; the cavity in the top shoulder guard beam 3 can be used for tank top gas and circuit routing, effectively protecting the electrical circuit from damage.

[0037] Example 2

[0038] The present embodiment provides a liquid tank semi-trailer, comprising a tank body 4, a tractor, a frame 8 and a supporting frame of the semi-trailer tank body of embodiment 1, wherein the tank body 4 comprises a front cylinder 41 and a rear cylinder 42, wherein the front cylinder 41 is fixedly connected and communicated with the rear cylinder 42, wherein the front cylinder 41 is mounted on the tractor through a traction seat 1, and the rear cylinder 42 is mounted on the frame 8 through a rear saddle 2. The traction seat 1 is used to mount a traction plate and realize connection with the tractor, and the four rear saddles 2 are connected with the frame 8. The distance and height difference between the traction seat 1 and the rear saddle 2 are reasonably designed by the method of moment balance according to the center of gravity position of the tank body 4, and the positions of the traction seat 1 and the rear saddle 2 are determined, so as to ensure that when the tank body 4 is fully loaded, the traction seat 1 bears about 40% of the load of the tank body 4, and such weight distribution ensures that the tractor drive axle has sufficient grip, and at the same time does not overload the tractor, and the remaining weight of the tank body 4 is borne by the four rear saddles 2, and at the same time, the tank body 4 has a certain elevation angle, which is conducive to improving the unloading efficiency of the tank body 4.

[0039] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A supporting frame for a semi-trailer tank, characterized in that: include: A bottom support device, on which the bottom of the tank body is fixedly mounted, the bottom support device comprising a traction seat and a rear saddle, the traction seat being used to support the front of the tank body, and the rear saddle being used to support the rear of the tank body; A top shoulder guard crossbeam, wherein the top shoulder guard crossbeam is fixed to the top of the tank body along the axial direction of the tank body, and the length of the top shoulder guard crossbeam is the same as the length of the tank body; A reinforcement ring, wherein a plurality of the reinforcement rings are fixedly connected to the inner side wall of the tank body along the axial direction of the tank body.

2. The supporting frame of the semi-trailer tank body according to claim 1, characterized in that: The traction seat is used to be connected to the tractor, and the number of the rear saddles is four, and the four rear saddles are used to be connected to the vehicle frame.

3. The supporting frame of the semi-trailer tank body according to claim 2, characterized in that: Two reinforcement rings are arranged at corresponding positions of the traction seat, the reinforcement ring close to the front head of the tank body is an I-shaped reinforcement ring, and the other reinforcement ring is an inverted T-shaped reinforcement ring.

4. The supporting frame of the semi-trailer tank body according to claim 3, characterized in that: The reinforcement rings are arranged at corresponding positions of the three rear saddles away from the rear head of the tank body, and the reinforcement rings are inverted T-shaped reinforcement rings.

5. The supporting frame of the semi-trailer tank body according to claim 2, characterized in that: The material of the traction seat and the rear saddle is aluminum alloy.

6. The supporting frame of the semi-trailer tank body according to claim 4, characterized in that: Each of the inverted T-shaped reinforcement rings is provided with an arc-shaped wave-breaking plate, and the arc-shaped wave-breaking plate is bent toward the direction of the rear head of the tank body.

7. The supporting frame of the semi-trailer tank body according to claim 1, characterized in that: There are two top shoulder guard beams, which are symmetrical about the axis of the tank body, and the spacing between the two top shoulder guard beams is 1-1.2m. The height of the top shoulder guard beam is higher than the tank top valve.

8. The supporting frame of the semi-trailer tank body according to claim 7, characterized in that: The cross section of the top shoulder guard beam is an A-shaped cross section.

9. The supporting frame of the semi-trailer tank body according to claim 8, characterized in that: The material of the top shoulder guard cross beam is aluminum alloy.

10. A liquid tank semi-trailer, characterized in that: include: A tank body, a tractor, a frame and a supporting skeleton of a semi-trailer tank body as described in any one of claims 1 to 9, wherein the tank body comprises a front cylinder and a rear cylinder, the front cylinder is fixedly connected and communicated with the rear cylinder, the front cylinder is mounted on the tractor through the traction seat, and the rear cylinder is mounted on the frame through the rear saddle.

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