Joint structure suitable for releasing temperature stress of box beam

Abstract

The utility model relates to the technical field of large mechanical equipment manufacturing, and discloses a joint structure suitable for a box beam to release temperature stress, which comprises a plurality of open clamping plates which are parallel to each other and are positioned at the end parts of two box beam sections, and each box beam section is provided with more than two open clamping plates; the connector shell is in a rectangular frame shape and wraps all the open clamping plates in a sleeved mode, and the open clamping plates and the two side plates of the connector shell are provided with the same kidney-shaped holes. The sliding pin shaft assembly comprises a sliding pin shaft and two shaft end baffles, the sliding pin shaft penetrates through all the kidney-shaped round holes, and the two shaft end baffles are perpendicularly fixed to the two ends of the sliding pin shaft; a set gap is reserved between every two adjacent open clamping plates, and a set gap is reserved between the side face of each open clamping plate and the inner wall of the connector shell. By means of the joint structure, the technical problem that an existing common temperature stress releasing structural form is not suitable for a box beam structure with large dead weight and high structural strength is solved.

Description

Technical Field

[0001] This invention relates to the field of large-scale mechanical equipment manufacturing technology, specifically to a joint structure suitable for releasing temperature stress in box beams. Background Technology

[0002] Currently, large port machinery exposed to the natural environment is subject to long-term temperature variations caused by seasonal temperature changes, cyclical variations in solar radiation intensity, and other factors, resulting in temperature differences across different structural surfaces. When temperature deformation caused by temperature stress is constrained by the internal and external forces of the structure, it can lead to localized structural damage. This is especially true in regions with significant temperature variations and strong solar radiation, where structural temperature stress is also substantial. Many high-strength sections of large machinery structures have experienced severe localized damage, which is largely attributed to the effects of temperature stress. Therefore, in harsh environments, particularly areas with large temperature differences and strong solar radiation, the impact of solar-induced temperature stress on the stress of large machinery structures should be eliminated during their manufacturing and installation processes.

[0003] In related technologies, existing temperature stress relief devices are mainly concentrated in the field of building structure technology. A few temperature stress relief devices applicable to mechanical equipment are also concentrated in small-scale, lightweight mechanical structures, and do not involve large-span mechanical equipment, especially special equipment with large self-weight. Traditional temperature stress relief structures generally use sliding bolts or movable hinge supports to release the internal stress generated by the structure due to temperature differences.

[0004] However, due to the limited shear strength of bolts and the risk of nuts falling off during frequent use, there are certain risks associated with their use. The structural form of sliding hinge supports limits their application in some mechanical equipment with high rigidity requirements. The two structural forms mentioned above are currently mostly suitable for mechanical equipment with relatively low structural strength. However, the main structures of common large-scale special equipment, such as main beams and legs, are mostly box-beam structures. These types of equipment generally have high self-weight and high structural strength, making sliding bolt devices and sliding hinge supports typically unsuitable. Summary of the Invention

[0005] This application provides a joint structure suitable for releasing temperature stress in box girders, solving the technical problem that current common temperature stress release structures are not suitable for box girder structures with large self-weight and high structural strength.

[0006] This application provides a joint structure suitable for relieving temperature stress in box girders, comprising:

[0007] Several parallel open snap-fit ​​plates are located at the ends of two box girder segments, and each box girder segment has more than two open snap-fit ​​plates.

[0008] The connector housing is rectangular and is fitted with all the open snap-fit ​​plates. The same oval holes are opened on both sides of all the open snap-fit ​​plates and the connector housing.

[0009] The sliding pin assembly includes a sliding pin and two end baffles. The sliding pin passes through all the oval holes, and the two end baffles are vertically fixed to both ends of the sliding pin. A set gap is reserved between two adjacent open snap-fit ​​plates and between the side of the open snap-fit ​​plate and the inner wall of the connector housing.

[0010] Based on the above technical solution, the sliding pin has slots on both sides of its shaft end, and the shaft end baffle is inserted into the slots of the sliding pin and fixed to the side of the connector housing by hexagonal bolts.

[0011] Based on the above technical solution, the sliding pin assembly also includes a stop washer, the stop washer and the shaft end baffle form a rectangular frame, and four hexagonal bolts pass through the four corners of the rectangular frame and are connected and fixed to the side of the connector housing.

[0012] Based on the above technical solution, the stop washer includes a stop plate portion, which abuts against one side of the hexagonal head of the hexagonal bolt.

[0013] Based on the above technical solution, each open snap-fit ​​plate has a patch attached to both large sides.

[0014] Based on the above technical solution, a rubber plate frame is provided on the inner wall of the connector shell.

[0015] Based on the above technical solution, each open snap-fit ​​plate has a second set gap between its two small side end faces and the inner wall of the rubber plate frame.

[0016] Based on the above technical solution, the outer diameter of the sliding pin of the sliding pin assembly is smaller than the diameter of the oval hole.

[0017] Based on the above technical solution, the two box girder segments are respectively the first box girder segment and the second box girder segment. The distance between the two first open snap-fit ​​plates of the first box girder segment is greater than the distance between the two second open snap-fit ​​plates of the second box girder segment, and both second open snap-fit ​​plates are located between the two first open snap-fit ​​plates.

[0018] Based on the above technical solution, the joint structure also includes a main beam support leg, and a locking foot is provided on one side of the joint shell. The locking foot of the main beam support leg is rotatably hinged to the locking foot of the joint shell through a hinge pin.

[0019] The beneficial effects of the technical solutions provided in this application include at least the following:

[0020] 1. The joint structure of this application has identical oval holes in the joint shell and the open snap-fit ​​plates of the two box girder segments. A sliding pin passes sequentially through the oval holes of the joint shell sidewall and the open snap-fit ​​plates from one side of the joint shell, and extends out from the other side of the joint shell. The two box girder segments are connected using the sliding pin and the joint shell, enabling rapid connection of the main girder segments. In the initial state, the sliding pin is located in the center of the oval hole, providing a certain amount of room for movement in three directions of the joint structure. During use, the sliding displacement of the sliding pin releases stress deformation caused by temperature changes. This joint structure has high strength, stable support, simple structure, and is easy to install and disassemble. The joint structure of this application mainly solves the problem that common temperature stress relief structures are not suitable for box girder structures with large self-weight, and avoids the common problems of easy damage and detachment of sliding bolts.

[0021] 2. The joint structure of this application uses a shaft end baffle, a retaining washer, and bolts to fix the sliding pin, replacing the traditional sliding bolt form. This avoids the risk of the sliding bolt loosening or falling off during use, and the connection is more secure and stable. Compared with the sliding bolt, the sliding pin has higher shear strength and is simpler to manufacture.

[0022] 3. In the joint structure of this application, when the mechanical structure deforms due to temperature changes, such as elongation or contraction, the two box-beam segments are connected and fixed by sliding pins, and can slide horizontally within the range of the oval hole to release the internal stress caused by temperature changes. At the same time, the outer diameter of the sliding pin of the sliding pin assembly is smaller than the diameter of the oval hole, and the two small side ends of each open snap-fit ​​plate have a second set gap with the inner wall of the rubber plate frame, which allows the box-beam segments to move not only horizontally (i.e., axially of the sliding pin) but also vertically (i.e., radially of the sliding pin), achieving the purpose of releasing temperature stress in multiple directions. When the structure requires it or the structural deformation is large, based on the above scheme, the joint shell is connected to the main beam support leg by a hinged pin. When the structure deforms due to temperature changes, the two box-beam segments and the main beam support leg can rotate within a certain range to adapt to the structural deformation, further releasing temperature stress. Compared to the commonly used temperature stress relief structures such as sliding bolts and movable hinge supports, the joint structure described in this patent is applicable to mechanical equipment structures with greater self-weight and higher strength. Furthermore, the structure is simpler, more reliable, and more practical. The sliding distance of the structural joint can be calculated and determined precisely based on the condition of the mechanical equipment. The joint type can be configured to accommodate structural deformation by connecting two main beam segments or three main structural segments, thus broadening its applicability. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A schematic diagram of the connector structure provided in the embodiments of this application;

[0025] Figure 2 A schematic diagram of the connector structure provided in the embodiments of this application without the connector shell;

[0026] Figure 3 A cross-sectional view of the connector structure provided in an embodiment of this application;

[0027] Figure 4 A schematic diagram of the joint structure connecting the main beam support leg provided in the embodiments of this application;

[0028] Figure 5 A schematic diagram of the sliding pin assembly provided in the embodiments of this application;

[0029] In the diagram: 1. Joint housing; 2. First box girder segment; 3. Second box girder segment; 4. Main beam support leg; 5. Sliding pin assembly; 6. Hinge pin; 7. Open snap-fit ​​plate; 8. Oval hole; 102. Rubber plate frame; 71. First open snap-fit ​​plate; 202. Adhesive plate; 72. Second open snap-fit ​​plate; 501. Sliding pin; 502. Shaft end baffle; 503. Hex bolt; 504. Stop washer; 5041. Stop plate. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0031] This application provides a joint structure suitable for releasing temperature stress in box girders, solving the technical problem that current common temperature stress release structures are not suitable for box girders with large self-weight and high structural strength.

[0032] like Figures 1 to 5 As shown, this application discloses a joint structure suitable for releasing temperature stress in box girders, the joint structure being used to connect two box girder segments.

[0033] The joint structure includes several parallel open snap-fit ​​plates 7, a joint housing 1, and a sliding pin assembly 5.

[0034] Among them, several open snap-fit ​​plates 7 are located at the ends of two box girder segments, and each box girder segment has two or more open snap-fit ​​plates 7 arranged in parallel. The four or more open snap-fit ​​plates 7 of the two box girder segments are parallel to each other.

[0035] The connector housing 1 is rectangular, and the connector housing 1 is fitted with an open snap-fit ​​plate 7. All open snap-fit ​​plates 7 and the two side plates of the connector housing 1 have the same oval holes 8, which provide a basis for subsequent allowance for movement.

[0036] The sliding pin assembly 5 includes a sliding pin 501 and two end baffles 502. The sliding pin 501 passes through all the oval holes 8, and the two end baffles 502 are perpendicular to the axis of the sliding pin 501 and fixed to both ends of the sliding pin 501. A predetermined gap is reserved between any two adjacent open snap-fit ​​plates 7 and between the side of the open snap-fit ​​plate 7 and the inner wall of the connector housing 1.

[0037] Specifically, in the initial state, the sliding pin 501 is located in the center of the oval hole 8.

[0038] In the joint structure of this application, the joint housing 1 and the open snap-fit ​​plates 7 of the two box beam segments have the same oval holes 8. The sliding pin 501 passes through the side wall of the joint housing 1 and the oval holes of the open snap-fit ​​plates 7 in sequence from one side of the joint housing, and extends out from the other side of the joint housing 1. The two box beam segments are connected by the sliding pin 501 and the joint housing 1, which can realize the rapid connection of the main beam segments.

[0039] In the initial state, the sliding pin 501 is located in the center of the oblong hole 8, in three directions of the joint structure ( Figure 2 The joint has a certain amount of room for movement in the XYZ directions. During use, the sliding displacement of the sliding pin 501 releases the stress deformation caused by temperature changes. This joint structure has high strength, stable support, simple structure and convenient installation and disassembly. The joint structure of this application mainly solves the problem that the current common temperature stress relief structure is not suitable for box beam structures with large self-weight, and avoids the common problem of easy damage and falling off of sliding bolts.

[0040] Furthermore, in one embodiment, the sliding pin 501 has slots on both sides of its shaft end, and the shaft end baffle 502 is inserted into the slots of the sliding pin 501 and is connected and fixed to the side of the connector housing 1 by hexagonal bolts 503.

[0041] In the actual use of the joint structure of this application, the sliding pin 501 and the joint housing 1 are relatively fixed, which meets the connection requirements of large self-weight and high structural strength. When stress deformation occurs due to temperature change, the sliding pin 501 releases the stress caused by temperature change through sliding displacement, which solves the technical problem that the current common temperature stress release structure is not suitable for box beam structures with large self-weight and high structural strength.

[0042] Furthermore, in one embodiment, the sliding pin assembly 5 further includes a stop washer 504. The stop washer 504 and the shaft end baffle 502 form a rectangular frame and are connected and fixed to the side of the connector housing 1 by hexagonal bolts 503. Specifically, the two shaft end baffles 502 are inserted into the slots of the sliding pin 501, the two stop washer 504 are respectively connected to the ends of the two shaft end baffles 502, and the four hexagonal bolts 503 pass through the four corners of the rectangular frame and are fixed to the side of the connector housing 1.

[0043] Furthermore, in one embodiment, the stop washer 504 includes a main body and a stop plate 5041, with a hexagonal bolt 503 passing through the main body and the stop plate 5041 abutting against one side of the hexagonal head of the hexagonal bolt 503. Specifically, the stop plate 5041 is perpendicular to the main body of the stop washer 504 and abuts against one side of the hexagonal head of the hexagonal bolt 503. The stop washer 504 can prevent the bolt from falling off and prevent the mechanical structure from loosening or swaying during use.

[0044] Specifically, during actual installation, the stop washer 504 is initially flat. After the hexagonal bolts 503 are installed, the stop plate 5041 is made perpendicular to the main body by auxiliary equipment.

[0045] The joint structure of this application prevents the sliding pin 501 from coming out of the oval hole by means of the shaft end baffle 502 and prevents the hexagonal bolt 503 from falling off by means of the stop washer 504, thus preventing the mechanical structure from loosening or wobbling during use, and the structure is stable and strong.

[0046] The joint structure of this application uses a shaft end baffle, a retaining washer, and bolts to fix the sliding pin, replacing the traditional sliding bolt form. This avoids the risk of the sliding bolt loosening or falling off during use, and the connection is more secure and stable. Compared with the sliding bolt, the sliding pin has higher shear strength and is simpler to manufacture.

[0047] Furthermore, in one embodiment, the two large sides of each open snap-fit ​​plate 7 ( Figure 3 The plates 202 are attached to both sides (left and right). The plates 202 are used to separate adjacent open snap-fit ​​plates 7, and the plates 202 have the ability to deform elastically. When deformation due to temperature stress occurs, the plates 202 deform accordingly to release the temperature stress.

[0048] Furthermore, in one embodiment, a rubber frame 102 is provided on the inner wall of the connector housing 1. The rubber frame 102 is rectangular tubular, and the connector housing 1 is tightly fitted onto the outside of the rubber frame 102. The rubber frame 102 also has the ability to elastically deform, which can release temperature stress.

[0049] The rubber plate frame 102 plays a role in buffering and protecting the joint shell 1 and the box girder segment.

[0050] like Figure 3 As shown, the outermost panel 202 has a certain gap with the inner wall of the rubber frame 102.

[0051] Furthermore, the two small side end faces of each open snap-fit ​​plate 7 ( Figure 3 Both the upper and lower directions have a second set gap with the inner wall of the rubber plate frame 102.

[0052] Furthermore, the outer diameter of the sliding pin 501 of the sliding pin assembly 5 is smaller than the diameter of the oval hole 8. This arrangement, combined with the second set clearance, allows the box girder segment to move not only along the sliding pin 501 but also radially along the sliding pin 501, achieving the purpose of releasing temperature stress in multiple directions.

[0053] Furthermore, in one embodiment, the two box girder segments are a first box girder segment 2 and a second box girder segment 3, respectively. The distance between the two first open snap-fit ​​plates 71 of the first box girder segment 2 is greater than the distance between the two second open snap-fit ​​plates 72 of the second box girder segment 3, and the two second open snap-fit ​​plates 72 are both located between the two first open snap-fit ​​plates 71.

[0054] Furthermore, in one embodiment, the joint structure also includes a main beam support leg 4, and a locking foot is provided on one side of the joint housing 1. The locking foot of the main beam support leg 4 is rotatably hinged to the locking foot of the joint housing 1 via a hinge pin 6.

[0055] The connector housing 1 can be directly fixed to the main beam support leg 4 by welding or flange bolt connection, which can realize the quick connection of two main beam segments and release temperature stress during use.

[0056] The joint structure of this application can connect two main beam segments and release temperature stress in the horizontal direction through sliding. The structure is simple, safe and stable. It can also connect the main beam legs in the vertical direction through hinges, further increasing the overall structure of the equipment's ability to adapt to temperature stress.

[0057] In the joint structure of this application, when the mechanical structure deforms due to temperature changes, such as elongation or contraction, the two box beam segments are connected and fixed by sliding pins 501, and can slide horizontally within the range of the oval hole 8 to release the internal stress caused by temperature changes.

[0058] Meanwhile, the outer diameter of the sliding pin 501 of the sliding pin assembly 5 is smaller than the diameter of the oval hole 8, and the two small side end faces of each open snap plate 7 have a second set gap with the inner wall of the rubber plate frame 102, which enables the box beam segment to move not only in the horizontal direction (i.e., the axial direction of the sliding pin) but also in the vertical direction (i.e., the radial direction of the sliding pin), so as to achieve the purpose of releasing temperature stress in multiple directions.

[0059] When the structure requires it or the structural deformation is large, based on the above scheme, the joint shell 1 is connected to the main beam leg 4 through the hinge pin 6. When the structure deforms due to temperature changes, the two box beam segments and the main beam leg 4 can rotate within a certain range to adapt to the structural deformation and further release the temperature stress.

[0060] Compared to the commonly used temperature stress relief structures such as sliding bolts and movable hinge supports, the joint structure described in this patent is applicable to mechanical equipment structures with greater self-weight and higher strength. Furthermore, the structure is simpler, more reliable, and more practical. The sliding distance of the structural joint can be calculated and determined precisely based on the condition of the mechanical equipment. The joint type can be configured to accommodate structural deformation by connecting two main beam segments or three main structural segments, thus broadening its applicability.

[0061] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0062] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0063] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A joint structure suitable for relieving temperature stress in box girders, characterized in that, The utility model relates to a joint structure of box girder, comprising: a plurality of mutually parallel open clamping plates (7) located at the end of two box girder segments, each of which has two or more open clamping plates (7); a rectangular frame-shaped joint shell (1) sleeved around all the open clamping plates (7), all the open clamping plates (7) and the two side plates of the joint shell (1) being provided with the same waist round holes (8); a sliding pin shaft assembly (5) comprising a sliding pin shaft (501) and two shaft end stop plates (502), the sliding pin shaft (501) penetrating all the waist round holes (8) and the two shaft end stop plates (502) being fixed perpendicularly to the two ends of the sliding pin shaft (501); a gap being reserved between adjacent two open clamping plates (7) and between the side surface of the open clamping plate (7) and the inner wall of the joint shell (1).

2. A joint structure for releasing temperature stresses in a box beam according to claim 1, characterized in that: The two sides of the shaft end of the sliding pin shaft (501) are provided with slot holes, the shaft end stop plates (502) are clamped into the slot holes of the sliding pin shaft (501) and are connected and fixed to the side surface of the joint shell (1) through hexagonal bolts (503).

3. A joint structure for releasing temperature stresses in a box beam according to claim 2, characterized in that: The sliding pin shaft assembly (5) further comprises a stop washer (504), the stop washer (504) and the shaft end stop plates (502) forming a rectangular frame, the four hexagonal bolts (503) penetrating the four corners of the rectangular frame and being connected and fixed to the side surface of the joint shell (1).

4. A joint structure for releasing temperature stresses in a box beam according to claim 3, characterized in that: The stop washer (504) comprises a stop plate part (5041) abutting against one side of the hexagonal head of the hexagonal bolt (503).

5. A joint structure for releasing temperature stresses in box girders according to claim 1, characterized in that: Two large side surfaces of each open clamping plate (7) are pasted with a pasting plate (202).

6. A joint structure for releasing temperature stresses in box girders according to claim 1, characterized in that: The inner wall of the joint shell (1) is provided with a rubber plate frame (102).

7. A joint structure for releasing temperature stresses in box girders according to claim 6, characterized in that: Two small side end surfaces of each open clamping plate (7) have a second gap with the inner wall of the rubber plate frame (102).

8. A joint structure for releasing temperature stresses in box girders according to claim 7, characterized in that: The outer diameter of the sliding pin shaft (501) of the sliding pin shaft assembly (5) is smaller than the diameter of the waist round hole (8).

9. A joint structure for releasing temperature stresses in box girders according to claim 1, characterized in that: The two box girder segments are a first box girder segment (2) and a second box girder segment (3), the distance between two first open clamping plates (71) of the first box girder segment (2) is greater than the distance between two second open clamping plates (72) of the second box girder segment (3), and the two second open clamping plates (72) are located between the two first open clamping plates (71).

10. A joint structure for releasing temperature stresses in box girders according to claim 1, characterized in that: The joint structure further comprises a girder leg (4), one side of the joint shell (1) is provided with a clamping leg, and the clamping leg of the girder leg (4) is rotatably connected to the clamping leg of the joint shell (1) through a hinge pin shaft (6).

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