阅读说明：本技术 一种核燃料运输容器的二次缓冲托架 (Secondary buffering bracket of nuclear fuel transport container ) 是由 周凡佳 杨宏安 李伟 赵经宙 袁江伟 陈超 何予 李本岩 于 2020-06-05 设计创作，主要内容包括：本发明涉及机械制造领域,尤其涉及一种核燃料运输容器的二次缓冲托架。所述二次缓冲托架包括：两个第一托架单元,所述两个第一托架单元之间设置有第二托架单元,所述第一托架单元与第二托架单元之间紧固连接,所述第一托架单元包括：由第一端梁和第一侧梁组成的框架,筋条,二次缓冲器以及卡槽；所述第二托架单元包括：由第二端梁和第二侧梁组成的框架,筋条以及卡槽。所述二次缓冲托架可提供缓冲作用,减震效果良好,在列车加速、刹车、编组连接碰撞时,避免燃料组件加速计出现跳离。在火车正常运行条件下,时间核燃料组件的加速度不超过1.5G,保证核燃料运输容器的稳定及核燃料组件运输安全。(The invention relates to the field of machine manufacturing, in particular to a secondary buffer bracket of a nuclear fuel transport container. The secondary buffer bracket includes: two first bracket units, be provided with the second bracket unit between two first bracket units, fastening connection between first bracket unit and the second bracket unit, first bracket unit includes: the frame comprises a first end beam and a first side beam, ribs, a secondary buffer and a clamping groove; the second carriage unit includes: the frame, rib and draw-in groove that constitute by second end roof beam and second curb girder. The secondary buffer bracket can provide a buffer effect, has a good shock absorption effect, and avoids the occurrence of jumping-off of the fuel assembly accelerometer when the train is accelerated, braked and marshalled to be connected and collided. Under the normal running condition of the train, the acceleration of the nuclear fuel assembly does not exceed 1.5G, so that the stability of the nuclear fuel transport container and the transport safety of the nuclear fuel assembly are ensured.)

1. A secondary buffer bracket of a nuclear fuel transport container, comprising two first bracket units, wherein a second bracket unit is arranged between the two first bracket units, the first bracket unit is fixedly connected with the second bracket unit, and the first bracket unit comprises: the frame is composed of a first end beam (1) and a first side beam (2), a first rib (3) is parallel to the first end beam (1), and two ends of the first rib are fixed on the first side beam (2); the second rib (4) is parallel to the first side beam (2), and two ends of the second rib are fixed on the first end beam (1);

secondary buffers (5) are arranged at four vertex angle parts of the frame, the secondary buffers (5) are clamped with the first end beam (1) through stop irons (6), the stop irons (6) are parallel to the first end beam (1), and two ends of the stop irons (6) are fixed on the first side beam (2) and the second ribs (4);

the lower part of the secondary buffer (5) is fixed on a base (7),

the frame is overlapped with the base (7) through a friction plate (8);

the first end stop (9) is parallel to and close to the first end beam (1), two ends of the first end stop (9) are fixed on the first side beam (2), and the first end stop (9), the side stops (10) and the mounting plate (11) form a clamping groove; the number of the clamping grooves is at least 4;

the second carriage unit includes:

a frame consisting of a second end beam (1 ') and a second side beam (2');

the third rib (3 ') is parallel to the second end beam (1 '), and two ends of the third rib are fixed on the second side beam (2 '); the fourth rib (4 ') is parallel to the second side beam (2 ') and two ends of the fourth rib are fixed on the second end beam (1 ');

the second end rail (9 ') is parallel to and close to the second end beam (1 '), two ends of the second end rail (9 ') are fixed on the second side beam (2 '), and the second end rail (9 '), the side rail (10) and the mounting plate (11) form a clamping groove; the draw-in groove symmetry sets up, is 4 at least.

2. The secondary buffer carrier for nuclear fuel transport vessels as claimed in claim 1, wherein said first ribs (3) are 2, evenly distributed within said frame; the number of the second ribs (4) is 3, and the second ribs are uniformly distributed in the frame;

the number of the third ribs (3') is 2, and the third ribs are uniformly distributed in the frame; the number of the fourth ribs (4') is 3, and the fourth ribs are uniformly distributed in the frame.

3. The secondary buffer carrier for nuclear fuel transport vessels as claimed in claim 2, wherein the legs (12) are fixed to the second central rib.

4. The secondary buffer carriage for a nuclear fuel transport vessel of claim 1, further comprising: and the bolt hooks (13) are arranged at two ends of the first side beam (2).

5. The secondary buffer carriage for a nuclear fuel transport vessel of claim 1, further comprising: and the hoisting screws (14) are symmetrically arranged on the first side beam (2).

6. The secondary buffer bracket for a nuclear fuel transport container according to claim 2, wherein 4 second end stops (9 ') are provided in the second bracket unit, wherein 2 second end stops (9 ') are respectively arranged near the second end beam (1 '), 2 second end stops (9 ') are arranged in the middle of the frame, and 2 second end stops (9 ') arranged in the middle form clamping grooves with the side stops (10) and the mounting plate (11); the draw-in groove is 2, and the symmetry sets up.

7. The secondary buffer carrier for a nuclear fuel transport vessel of claim 6, wherein the first carrier unit is provided with 2 pairs of catching slots and the second carrier unit is provided with 3 pairs of catching slots.

8. The nuclear fuel transport vessel secondary buffer carriage as claimed in claim 1, wherein the slot is sized to match a base of the nuclear fuel transport vessel.

9. The secondary buffer carrier for nuclear fuel transport vessels as claimed in claim 1, wherein the first carrier unit is vertically and laterally limited by a base (7) and a secondary buffer (5).

Technical Field

The invention relates to the field of machine manufacturing, in particular to a secondary buffer bracket of a nuclear fuel transport container.

Background

The VVER type nuclear power unit is a TVS-2M nuclear fuel assembly, a single assembly is of a regular hexagon structure, a single transport container is formed by welding and combining two cylindrical structures and can contain two groups of assemblies, and the interior of the transport container is fixed by adopting a wood insert without an additional buffer device. Acceleration measuring instruments are arranged at two outer ends of the nuclear fuel transport container, and the related acceleration limit value is 4G.

Currently, nuclear fuel assemblies require rail transportation. When a train is accelerated or braked in the railway transportation process, collision is easy to occur, and the nuclear fuel transportation container can not ensure that fuel and speed are in a limit range, so that the nuclear fuel assembly is easy to damage.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the secondary buffer bracket of the nuclear fuel transport container is suitable for railway transportation, and guarantees the stability of the nuclear fuel transport container and the transport safety of a nuclear fuel assembly.

The invention provides a secondary buffer bracket of a nuclear fuel transport container, which comprises two first bracket units, wherein a second bracket unit is arranged between the two first bracket units, the first bracket unit and the second bracket unit are fixedly connected, and the first bracket unit comprises: the frame is composed of a first end beam (1) and a first side beam (2), a first rib (3) is parallel to the first end beam (1), and two ends of the first rib are fixed on the first side beam (2); the second rib (4) is parallel to the first side beam (2), and two ends of the second rib are fixed on the first end beam (1);

secondary buffers (5) are arranged at four vertex angle parts of the frame, the secondary buffers (5) are clamped with the first end beam (1) through stop irons (6), the stop irons (6) are parallel to the first end beam (1), and two ends of the stop irons (6) are fixed on the first side beam (2) and the second ribs (4);

the lower part of the secondary buffer (5) is fixed on a base (7),

the frame is overlapped with the base (7) through a friction plate (8);

the first end stop (9) is parallel to and close to the first end beam (1), two ends of the first end stop (9) are fixed on the first side beam (2), and the first end stop (9), the side stops (10) and the mounting plate (11) form a clamping groove; the number of the clamping grooves is at least 4;

the second carriage unit includes:

a frame consisting of a second end beam (1 ') and a second side beam (2');

the third rib (3 ') is parallel to the second end beam (1 '), and two ends of the third rib are fixed on the second side beam (2 '); the fourth rib (4 ') is parallel to the second side beam (2 ') and two ends of the fourth rib are fixed on the second end beam (1 ');

the second end rail (9 ') is parallel to and close to the second end beam (1 '), two ends of the second end rail (9 ') are fixed on the second side beam (2 '), and the second end rail (9 '), the side rail (10) and the mounting plate (11) form a clamping groove; the draw-in groove symmetry sets up, is 4 at least.

Preferably, the number of the first ribs (3) is 2, and the first ribs are uniformly distributed in the frame; the number of the second ribs (4) is 3, and the second ribs are uniformly distributed in the frame;

the number of the third ribs (3') is 2, and the third ribs are uniformly distributed in the frame; the number of the fourth ribs (4') is 3, and the fourth ribs are uniformly distributed in the frame.

Preferably, a leg (12) is fixed to the second central rib.

Preferably, the method further comprises the following steps: and the bolt hooks (13) are arranged at two ends of the first side beam (2).

Preferably, the method further comprises the following steps: and the hoisting screws (14) are symmetrically arranged on the first side beam (2).

Preferably, 4 second end stops (9 ') are arranged in the second bracket unit, wherein 2 second end stops (9 ') are respectively close to the second end beam (1 '), 2 second end stops (9 ') are arranged in the middle of the frame, and 2 second end stops (9 ') arranged in the middle, the side stops (10) and the mounting plate (11) form clamping grooves; the draw-in groove is 2, and the symmetry sets up.

Preferably, the first carrier unit is provided with 2 pairs of card slots, and the second carrier unit is provided with 3 pairs of card slots.

Preferably, the slot is matched with the size of the base of the nuclear fuel transport container.

Preferably, the first bracket unit is limited vertically and transversely by a base (7) and a secondary buffer (5).

Compared with the prior art, the secondary buffer bracket of the nuclear fuel transport container is suitable for TVS-2M nuclear fuel transport containers. The secondary buffer bracket can provide a buffer effect, has a good shock absorption effect, and avoids the occurrence of jumping-off of the fuel assembly accelerometer when the train is accelerated, braked and marshalled to be connected and collided. Under the normal running condition of the train, the acceleration of the nuclear fuel assembly does not exceed 1.5G, so that the stability of the nuclear fuel transport container and the transport safety of the nuclear fuel assembly are ensured. Secondly, the secondary buffer bracket is provided with a plurality of clamping grooves, so that the combined transportation requirements of different numbers of nuclear fuel transportation containers are met.

Drawings

FIG. 1 is a schematic view of the construction of a secondary buffer carrier for a nuclear fuel transport vessel according to the present invention;

FIG. 2 is a schematic view showing the construction of a first carrier unit according to the present invention;

FIG. 3 shows a cross-sectional view along A-A of the first carrier unit of the present invention;

FIG. 4 shows a side view of the first bracket unit of the present invention at a side beam thereof;

FIG. 5 shows a side view of the invention at the end beam of the first carrier unit;

FIG. 6 is a side view of the present invention showing stacking of secondary buffer carriers;

illustration of the drawings:

1 is a first end beam, 2 is a first side beam, 3 is a first rib, 4 is a second rib, 5 is a secondary buffer, 6 is a stop iron, 7 is a base, 8 is a friction plate, 9 is a first end stop, 10 is a side stop, 11 is an installation plate, 12 is a supporting leg, 13 is a bolt hook, and 14 is a hoisting screw; 15 is a nuclear fuel transport container;

1 ' is a second end beam, 2 ' is a second side beam, 3 ' is a third rib, 4 ' is a fourth rib, and 9 ' is a second end stop.

Detailed Description

For a further understanding of the invention, embodiments of the invention are described below in conjunction with the examples, but it should be understood that these descriptions are included merely to further illustrate features and advantages of the invention, and are not intended to limit the invention.

Referring to fig. 1, an embodiment of the present invention discloses a secondary buffer bracket for a nuclear fuel transport container, including two first bracket units, a second bracket unit disposed between the two first bracket units, and a fastening connection between the first bracket unit and the second bracket unit, wherein the first bracket unit includes: the frame is composed of a first end beam (1) and a first side beam (2), a first rib (3) is parallel to the first end beam (1), and two ends of the first rib are fixed on the first side beam (2); the second rib (4) is parallel to the first side beam (2), and two ends of the second rib are fixed on the first end beam (1);

secondary buffers (5) are arranged at four vertex angle parts of the frame, the secondary buffers (5) are clamped with the first end beam (1) through stop irons (6), the stop irons (6) are parallel to the first end beam (1), and two ends of the stop irons (6) are fixed on the first side beam (2) and the second ribs (4);

the lower part of the secondary buffer (5) is fixed on a base (7),

the frame is overlapped with the base (7) through a friction plate (8);

the first end stop (9) is parallel to and close to the first end beam (1), two ends of the first end stop (9) are fixed on the first side beam (2), and the first end stop (9), the side stops (10) and the mounting plate (11) form a clamping groove; the number of the clamping grooves is at least 4;

the second carriage unit includes:

a frame consisting of a second end beam (1 ') and a second side beam (2'); the third rib (3 ') is parallel to the second end beam (1 '), and two ends of the third rib are fixed on the second side beam (2 '); the fourth rib (4 ') is parallel to the second side beam (2 ') and two ends of the fourth rib are fixed on the second end beam (1 ');

the second end rail (9 ') is parallel to and close to the second end beam (1 '), two ends of the second end rail (9 ') are fixed on the second side beam (2 '), and the second end rail (9 '), the side rail (10) and the mounting plate (11) form a clamping groove; the draw-in groove symmetry sets up, is 4 at least.

According to the invention, the secondary buffer bracket of the nuclear fuel transport container is matched with a transported railway wagon, and comprises two first bracket units, a second bracket unit is arranged between the two first bracket units, the first bracket units and the second bracket units are fixedly connected, and preferably, the three bracket units are longitudinally and integrally fastened through fastening bolts or are tightly connected through screws.

The structure of the first carrier unit, see in particular fig. 2, comprises: the frame is composed of a first end beam (1) and a first side beam (2), a first rib (3) is parallel to the first end beam (1), and two ends of the first rib are fixed on the first side beam (2); the second rib (4) is parallel to the first side beam (2), and two ends of the second rib are fixed on the first end beam (1). The first ribs and the second ribs are used for reinforcing the main structure of the frame.

Preferably, the number of the first ribs (3) is 2, and the first ribs are uniformly distributed in the frame. Namely, the same side port of the 2 first beads trisects the first side member (2).

The number of the second ribs (4) is 3, and the second ribs are uniformly distributed in the frame. Namely, the same side port of the 3 second ribs equally divides the first end beam (1) into four parts.

More preferably, a leg (12) is fixed to the second central rib. The supporting legs (12) are used for fixing other secondary buffer supports when the nuclear fuel transport container is not loaded.

According to the invention, secondary buffers (5) are arranged at four vertex angle parts of the frame, the secondary buffers (5) are clamped with the first end beam (1) through stop irons (6), the stop irons (6) are parallel to the first end beam (1), and two ends of the stop irons (6) are fixed on the first side beam (2) and the second ribs (4);

a cross-sectional view in the direction a-a of the first carriage unit is shown in fig. 3. The lower part of the secondary buffer (5) is fixed on a base (7),

the frame and the base (7) are overlapped through a friction plate (8).

Preferably, the first bracket unit is vertically and transversely limited by a base (7) and a secondary buffer (5).

The first end stop (9) is parallel to and close to the first end beam (1), two ends of the first end stop (9) are fixed on the first side beam (2), and the first end stop (9), the side stops (10) and the mounting plate (11) form a clamping groove; the draw-in groove symmetry sets up, is 4 at least.

The number of the first end gears (9) is 2, and the first end gears are respectively close to the first end beams (1) at two ends. The first end stop (9) is higher than the secondary buffer, and two ends of the first end stop are fixed on the first side beam (2).

Preferably, the clamping grooves are uniformly arranged on two sides of the frame. The draw-in groove symmetry sets up, is 4 at least.

Preferably, the first carrier unit is provided with 2 pairs of card slots, i.e., 4 card slots.

Preferably, the secondary buffer carriage of the nuclear fuel transport vessel further comprises: and the bolt hooks (13) are arranged at two ends of the first side beam (2).

Preferably, the secondary buffer bracket of the nuclear fuel transport container further comprises hoisting screws (14) symmetrically arranged on the first side beam (2). The hoisting screw is used for hoisting and installing the bracket.

A side view at the side member of the first bracket unit is shown in fig. 4, and a side view at the end member is shown in fig. 5.

According to the present invention, the second tray unit has a structure and a size identical to those of the first tray unit, and is not provided with a secondary buffer. Specifically, the second carriage unit: the method comprises the following steps: a frame consisting of a second end beam (1 ') and a second side beam (2'); the third rib (3 ') is parallel to the second end beam (1 '), and two ends of the third rib are fixed on the second side beam (2 '); the fourth rib (4 ') is parallel to the second side beam (2 ') and two ends of the fourth rib are fixed on the second end beam (1 ');

the second end rail (9 ') is parallel to and close to the second end beam (1 '), two ends of the second end rail (9 ') are fixed on the second side beam (2 '), and the second end rail (9 '), the side rail (10) and the mounting plate (11) form a clamping groove; the draw-in groove symmetry sets up, is 4 at least. Preferably, the number of the clamping grooves close to the second end beam (1') is 4.

Preferably, the number of the third ribs (3') is 2, and the third ribs are uniformly distributed in the frame; the number of the fourth ribs (4') is 3, and the fourth ribs are uniformly distributed in the frame.

Preferably, 4 second end stops (9 ') are arranged, wherein 2 second end stops (9 ') are respectively close to the second end beam (1 '), 2 second end stops (9 ') are arranged in the middle of the frame, and 2 second end stops (9 ') arranged in the middle, the side stops (10) and the mounting plate (11) form clamping grooves; the draw-in groove is 2, and the symmetry sets up.

Namely: the second bracket unit is provided with 3 pairs of card slots.

According to the invention, the clamping groove is preferably matched to the dimensions of the base of the nuclear fuel transport container.

According to the invention, when the secondary buffer bracket is placed, two layers can be stacked, the two layers of brackets are separated by the double-layer positioning bracket, and the fastening device of the nuclear fuel transport container is tightly connected with the bolt hook, so that the nuclear fuel transport container is stably placed. A specific overlay is shown in fig. 6.

In the running process of the train, when the train is accelerated to start, braked and marshalled to connect and collide, the frame longitudinally slides on the friction plate of the base, the secondary buffer plays a buffering role, the accelerometer of the nuclear fuel assembly does not jump off, and the stability of the nuclear fuel transportation container and the transportation safety of the nuclear fuel assembly are ensured.

The above description of the embodiments is only intended to facilitate the understanding of the method of the invention and its core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.