Pull rod connecting piece
By designing the tie rod connectors connected with variable cross-section box structure and double-ear plates, the problem of stress concentration and cracking of the tie rod connectors in the prior art in high fatigue environments is solved, and a smoother stress and longer service life is achieved.
Patent Information
- Application Number
- CN202422016232.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-08-19
AI Technical Summary
Existing tie rod connectors are prone to stress concentration and cracking risks in high fatigue environments, resulting in short service life.
A tie rod connecting piece is designed, which adopts a variable cross-section box structure and a double-ear plate to connect. Through the nesting of the double-ear plate and another tie rod connecting piece, stress concentration is eliminated and hinge strength is improved.
The overall stress smoothing is achieved, the risk of cracking is reduced, and the service life is extended.
Smart Images
Figure CN222974770U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of container equipment manufacturing, in particular to a tie rod connecting piece, which is applied to a semi-circular main girder quay crane. Background Art
[0002] A quay crane, also known as a shore container crane, is a device used to load and unload containers on a ship at the shore. The trolley needs to travel back and forth on the front main girder to load and unload containers. In order to prevent the front main girder from sagging and maintain its stability, tie rods are usually designed to fix the front main girder. At the same time, when the container ship approaches the dock or there is a storm, the front main girder needs to be tilted up for avoidance, and the tie rods are bent and retracted. Therefore, the tie rods need to be designed in a multi-segment hinged form. Every time the trolley travels to the front main girder for operation, it affects the force on the tie rods. Therefore, the tie rods are high-fatigue members, and the details of the structure are particularly important.
[0003] Conventionally, when designing multiple tie rods, there is a connecting rod member with double ear plates at the upper end interface and single ear plates at the lower end interface, and the cross-section of the rod member is an equal cross-section. The single ear plate needs to be inserted into the interior of the box body, and stress relief holes are opened on the box body web at the end of the single ear plate. Due to the small width of the box body, the welding and grinding space is limited, resulting in this area being a high-stress point with poor fatigue details and a high risk of cracking. Summary of the Utility Model
[0004] Aiming at the above problems of the prior art, the utility model provides a tie rod connecting piece with a compact structure, smooth overall force, and extended service life.
[0005] Specifically, the utility model provides a tie rod connecting piece applied to a semi-circular main girder quay crane. The tie rod connecting piece includes a first web and a second web arranged oppositely at intervals, and a first wing plate and a second wing plate arranged oppositely at intervals. The first web, the second web, the first wing plate, and the second wing plate enclose a box structure with a rectangular cross-section;
[0006] The tie rod connecting piece further includes:
[0007] Two first connecting thick plates are arranged oppositely in parallel at intervals, one end of each of which is respectively fixed to one end of the first wing plate and the second wing plate, and the other ends of the two first connecting thick plates form a first ear plate;
[0008] Two second connecting thick plates are arranged oppositely in parallel at intervals, one end of each of which is respectively fixed to the other end of the first wing plate and the second wing plate, and the other ends of the two second connecting thick plates form a second ear plate;
[0009] Wherein, the distance between the two second ear plates is greater than the distance between the two first ear plates.
[0010] According to an embodiment of the present utility model, the length directions of the first wing plate and the second wing plate are inclined outward from one end thereof along the axis of the tie rod connector.
[0011] According to an embodiment of the present utility model, the first wing plate and the second wing plate are inclined outward at the same angle.
[0012] According to an embodiment of the present utility model, the first wing plate and the second wing plate are inclined outward at an angle of 2° to 5°.
[0013] According to an embodiment of the present utility model, end plates are provided at both ends of the box body structure to seal the interior of the box body structure.
[0014] According to an embodiment of the present utility model, the first web plate and the second web plate are arranged in parallel at intervals.
[0015] According to an embodiment of the present utility model, the two first connection thick plates are bent inward at the position of the end plate so that the two first connection thick plates are parallel to each other.
[0016] According to an embodiment of the present utility model, the two second connection thick plates are bent inward at the position of the end plate so that the two second connection thick plates are parallel to each other.
[0017] According to an embodiment of the present utility model, the first connection thick plate and the second connection thick plate are respectively welded and fixed to the first wing plate and the second wing plate.
[0018] According to an embodiment of the present utility model, the tie rod connector further includes a plurality of heavy plates, and the heavy plates are respectively welded and fixed to the other ends of the two first connection thick plates and the other ends of the two second connection thick plates.
[0019] A tie rod connector provided by the present utility model replaces the single ear at one end of the tie rod connector in the prior art with a double ear, and the double ears can be nested and matched with the double ears of another tie rod connector, so that the overall force is smooth, the fatigue details are eliminated, the cracking risk is reduced, and the service life can be extended.
[0020] It should be understood that the above general description and the following detailed description of the present utility model are both exemplary and explanatory, and are intended to provide further explanation for the present utility model as claimed. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings are included to provide a further understanding of the present utility model, and they are incorporated into and constitute a part of this application. The drawings illustrate embodiments of the present utility model and, together with this specification, serve to explain the principles of the present utility model. In the drawings:
[0022] Figure 1A The structural schematic diagram of the tie rod connector according to an embodiment of the present utility model is shown.
[0023] Figure 1B The structural schematic diagram of the tie rod connector according to an embodiment of the present utility model is shown.
[0024] Figure 2A is Figure 1A the sectional view taken along the AA direction of
[0025] Figure 2B is Figure 1A the sectional view taken along the BB direction of
[0026] Figure 2C is Figure 1A the sectional view taken along the CC direction of
[0027] Figure 2D is Figure 1A the sectional view taken along the EE direction of
[0028] Figure 2E is Figure 1A the sectional view taken along the FF direction of
[0029] Figure 3 The structural schematic diagram of a semi-circular large beam quay crane is shown.
[0030] Figure 4 shows Figure 3 a partial schematic diagram of the tie rod in
[0031] Among them, the above-mentioned drawings include the following reference numerals:
[0032] tie rod connectors 100, 100'
[0033] first web 101
[0034] second web 102
[0035] first wing plate 103
[0036] second wing plate 104
[0037] first connecting thick plate 105
[0038] second connecting thick plate 106
[0039] first ear plates 107, 107'
[0040] second ear plate 108
[0041] end plate 109
[0042] heavy plate 110
[0043] semi-circular large beam quay crane 300
[0044] Front front beam 301
[0045] Rear rear beam 302
[0046] Tie rod 303 Detailed implementation manners
[0047] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other.
[0048] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.
[0049] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0050] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0051] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary statements, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.
[0052] For the sake of convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "upper" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned as "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations are made for the spatial relative descriptions used here.
[0053] In addition, it should be noted that the use of terms such as "first", "second" etc. to limit components is only for the convenience of differentiating the corresponding components. Without additional statements, the above terms have no special meanings. Therefore, it should not be construed as a limitation on the protection scope of the present application. In addition, although the terms used in the present application are selected from well-known and commonly used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant according to his or her judgment, and their detailed meanings are described in the relevant parts of the description herein. In addition, it is required to understand the present application not only through the actual terms used, but also through the meanings implied by each term.
[0054] Figure 1A The structural schematic diagram of the tie rod connector according to an embodiment of the present utility model is shown. Figure 1B The structural schematic diagram of the tie rod connector according to an embodiment of the present utility model is shown. Figure 1A and Figure 1B is the side structural schematic diagram of the front and rear positions of the tie rod connector when rotated 90° along the axis. Figure 2A is Figure 1A the sectional view taken along the AA direction of Figure 2B is Figure 1A the sectional view taken along the BB direction ofFigure 2C is Figure 1A the sectional view taken along the CC direction of Figure 2D is Figure 1A the sectional view taken along the EE direction of Figure 2E is Figure 1A the sectional view taken along the FF direction of As shown in the figure, the present utility model provides a tie rod connector 100 applied to a semi-circular girder quay crane. The tie rod connector 100 includes a first web 101 and a second web 102 which are oppositely arranged at intervals, and a first wing plate 103 and a second wing plate 104 which are oppositely arranged at intervals. Referring to Figure 2A and Figure 2B , the first web 101, the second web 102, the first wing plate 103 and the second wing plate 104 enclose to form a hollow box structure with a rectangular cross-section.
[0055] The tie rod connector 100 further includes two first connecting thick plates 105 and two second connecting thick plates 106.
[0056] Wherein, the two first connecting thick plates 105 are arranged parallel to each other and at intervals. One ends of the two first connecting thick plates 105 are respectively fixed to one ends of the first wing plate 103 and the second wing plate 104. First ear plates 107 are formed at the other ends of the two first connecting thick plates 105. That is to say, a double-ear plate structure with two first ear plates 107 is formed at one end of the tie rod connector 100.
[0057] The two second connecting thick plates 106 are arranged parallel to each other and at intervals. One ends of the two second connecting thick plates 106 are respectively fixed to the other ends of the first wing plate 103 and the second wing plate 104. Second ear plates 108 are formed at the other ends of the two second connecting thick plates 106. That is to say, a double-ear plate structure with two second ear plates 108 is also formed at the other end of the tie rod connector 100. And the distance between the two second ear plates 108 is greater than the distance between the two first ear plates 107. Referring to Figure 2C and Figure 2E Figure 2C is the sectional view taken along the CC direction at the position of the first ear plate 107, Figure 2E is the sectional view taken along the FF direction at the position of the second ear plate 108. Obviously, the distance between the two second ear plates 108 is greater than the distance between the two first ear plates 107. The purpose of this structural design is to enable the two first ear plates 107 of one tie rod connector 100 to be nested between the two second ear plates 108 of another tie rod connector 100, so that two or more tie rod connectors 100 are connected end to end to form the tie rods of the semi-circular girder quay crane. Another design purpose is to eliminate the defect of stress concentration of the original single ear plate, improve the hinge strength and extend the service life.
[0058] Preferably, referring to Figure 1B, the length directions of the first wing plate 103 and the second wing plate 104 are inclined outward from one end along the axis of the tie rod connector 100. As shown in the figure, the first wing plate 103 extends from left to right and is slightly inclined upward, and the second wing plate 104 extends from left to right and is slightly inclined downward. During the extension process, the interval between the first wing plate 103 and the second wing plate 104 gradually increases. Comparing Figure 2A , Figure 2B and Figure 2D , it can be clearly seen that the left-right spacing between the first wing plate 103 and the second wing plate 104 gradually becomes larger. Specifically, the tie rod connector 100 provided by the present utility model has a box structure with a variable cross-section. Compared with the box structure with a constant cross-section, the force on the tie rod connector 100 is smoother during actual use, and stress concentration can be effectively avoided.
[0059] Preferably, the first wing plate 103 and the second wing plate 104 are inclined outward at the same angle. More preferably, the first wing plate 103 and the second wing plate 104 are inclined outward at an angle of 2° to 5°.
[0060] Preferably, end plates 109 are provided at both ends of the box structure to form a complete box structure. Such a design makes a sealed space formed inside the box structure, which can prevent water vapor from invading and extend the service life of the tie rod connector 100.
[0061] Preferably, the first web plate 101 and the second web plate 102 are arranged in parallel at intervals. By way of example and not limitation, the first web plate 101 and the second web plate 102 can also be designed as structures inclined outward, and a box structure with a variable cross-section can also be obtained.
[0062] Preferably, the two first connecting thick plates 105 are bent inward at the position of the end plate 109 so that the two first connecting thick plates 105 are parallel to each other, which is beneficial to subsequent assembly.
[0063] Preferably, the two second connecting thick plates 106 are bent inward at the position of the end plate 109 so that the two second connecting thick plates 106 are parallel to each other, which is beneficial to subsequent assembly
[0064] Preferably, the first connecting thick plate 105 and the second connecting thick plate 106 are respectively welded and fixed to the first wing plate 103 and the second wing plate 104, making the overall structure more stable.
[0065] Preferably, the tie rod connector 100 further includes a plurality of heavy plates 110. The heavy plates 110 are respectively welded and fixed to the other ends of the two first connecting thick plates 105 to form a first ear plate 107, and welded and fixed to the other ends of the two second connecting thick plates 106 to form a second ear plate 108.
[0066] Figure 3The structural schematic diagram of a semi-circular girder quay crane is shown. As shown in the figure, the semi-circular girder quay crane 300 is a device used for loading and unloading containers on ships at the shore. The semi-circular girder quay crane 300 includes a front girder 301 and a rear girder 302 which are hinged front and back. The trolley needs to travel back and forth on the front girder 301 to load and unload containers. In order to prevent the front girder 301 from dropping and maintain the stability of the front girder 301, a tie rod 303 is designed to fix the front girder 301. At the same time, when the container ship approaches the dock or there is a stormy weather, the tie rod 303 is bent and retracted to make the front girder 301 tilt up for avoidance. Every time the trolley travels to the front girder 301 for operation, it will have a great impact on the force of the tie rod 303. Therefore, the tie rod 303 is a high-fatigue member, and here the tie rod 303 is composed of a plurality of tie rod connectors 100 provided by the present utility model connected in a head-to-tail hinged form.
[0067] Figure 4 is shown Figure 3 The partial schematic diagram of the tie rod in [the figure] is shown. As shown in the figure, the tie rod connector 100 has a box structure with a variable cross-section. One end of the tie rod connector 100 has two first ear plates 107 arranged parallel and spaced apart from each other, and is hinged and fixed in cooperation with a single-ear plate structural member. The other end of the tie rod connector 100 has two second ear plates 108 arranged parallel and spaced apart from each other, and is nested and matched with the two first ear plates 107' of another tie rod connector 100'.
[0068] The tie rod connector provided by the present utility model has the following advantages:
[0069] 1. Changing the box structure with a constant cross-section to a box structure with a variable cross-section makes the overall force smooth.
[0070] 2. Changing the single-ear plate to a double-ear plate structure eliminates stress concentration and extends the service life.
[0071] It is obvious to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present utility model without departing from the spirit and scope of the present utility model. Therefore, it is intended that the present utility model cover the modifications and variations of the present utility model falling within the scope of the appended claims and their equivalent technical solutions.
Claims
1. A tie rod connector, used for a semicircular beam quayside bridge, characterized in that: The tie rod connector comprises a first web and a second web disposed opposite to each other, and a first wing plate and a second wing plate disposed opposite to each other, wherein the first web, the second web, the first wing plate and the second wing plate are enclosed to form a box structure with a rectangular cross section; The pull rod connector also includes: Two first connecting thick plates are arranged in parallel and spaced apart from each other, one end of each of which is fixed to one end of the first wing plate and the second wing plate respectively, and the other ends of the two first connecting thick plates form first ear plates; Two second connecting thick plates are arranged in parallel and spaced apart from each other, one end of each second connecting thick plate is fixed to the other end of the first wing plate and the second wing plate respectively, and the other ends of the two second connecting thick plates form second ear plates; Wherein, the distance between the two second ear plates is greater than the distance between the two first ear plates.
2. The tie rod connector according to claim 1, characterized in that: The length directions of the first wing plate and the second wing plate are inclined outwards from one end thereof along the axis of the pull rod connector.
3. The tie rod connector according to claim 2, characterized in that: The first wing panel and the second wing panel have the same outward inclination angle.
4. The tie rod connector according to claim 3, characterized in that: The first wing plate and the second wing plate are inclined outward at an angle of 2° to 5°.
5. The tie rod connector according to claim 1, characterized in that: End plates are arranged at both ends of the box structure to seal the interior of the box structure.
6. The tie rod connector according to claim 1, characterized in that: The first web and the second web are arranged in parallel and spaced apart.
7. The tie rod connector according to claim 1, characterized in that: The two first connecting thick plates are bent inwardly at the end plate positions so that the two first connecting thick plates are parallel to each other.
8. The tie rod connector according to claim 1, characterized in that: The two second connecting thick plates are bent inwardly at the end plate positions so that the two second connecting thick plates are parallel to each other.
9. The tie rod connector according to claim 1, characterized in that: The first connecting thick plate and the second connecting thick plate are respectively welded and fixed to the first wing plate and the second wing plate.
10. The tie rod connector according to claim 1, characterized in that: It also includes a plurality of heavy plates, which are respectively welded and fixed to the other ends of the two first connecting thick plates and the other ends of the two second connecting thick plates.