A tie rod connector for a bridge-type grab unloader and the bridge-type grab unloader

Abstract

This application relates to a bridge-type grab unloader, specifically a tie rod connector for the bridge-type grab unloader and the bridge-type grab unloader itself. The tie rod connector is a segment of a segmented tie rod, with a pulley beam connecting two symmetrically arranged tie rod connectors. The tie rod connector includes: a pair of parallel and symmetrically arranged first wing plates and a pair of parallel and symmetrically arranged second wing plates, the first and second wing plates being on the same horizontal plane. One end of each first wing plate is a first perforated lug plate, and the other end is connected to one end of its corresponding second wing plate. The other end of each second wing plate is a second perforated lug plate. A first web plate, a portion of which is located between the pair of first wing plates and connected to each pair of first wing plates, and the other portion of which is located between the pair of second wing plates and connected to each pair of second wing plates. This application can improve the stress concentration problem on the tie rod and extend its service life.

Description

Technical Field

[0001] This application relates to a bridge grab unloader, specifically to a tie rod connector for a bridge grab unloader and the bridge grab unloader itself. Background Technology

[0002] A bridge grab unloader is a device used for loading and unloading containers from ships at the shore. The trolley of the bridge grab unloader travels back and forth on the front beam, and the trolley drives the grab bucket to grab cargo from the ship's hold and unload the cargo onto the shore.

[0003] To prevent the front beam from sagging and maintain its stability, the bridge-type grab unloader uses tie rods to fix the front beam and bends it to raise it. Therefore, the tie rods are designed as multi-segment hinged connections. Each time the trolley travels over the front beam for operation, it affects the stress on the tie rods. Thus, the tie rod is a high-fatigue member, and its structural details are extremely important.

[0004] The lower interface of a conventional tie rod connector is a double lug plate, which is connected to an I-beam via a square steel plate. The I-beam then connects to the pulley beam. The square steel plate has a relatively small cross-section, and the weld length is limited when connecting to the hinge lugs and the web of the I-beam. This limited space for welding and grinding results in a high-stress area with poor fatigue detail and a higher risk of cracking. Furthermore, the I-beam web connecting to the pulley beam is a single web plate, which connects to two lug plates without any ribs, making stress concentration likely, resulting in poor fatigue detail and a higher risk of cracking. Utility Model Content

[0005] To address the aforementioned problems in the prior art, this utility model proposes a tie rod connector for a bridge-type grab unloader, which can improve the stress concentration problem at the nodes of the upper part of the tie rod and extend the service life of the tie rod.

[0006] To solve at least one of the above-mentioned technical problems, the technical solution of this application is as follows:

[0007] According to a first aspect of this application, a tie rod connector for a bridge-type grab unloader is provided. The tie rod connector is a segment of a segmented tie rod, and a pulley beam is connected between two symmetrically arranged tie rod connectors. The tie rod connector includes:

[0008] A pair of parallel and symmetrically arranged first wing plates and a pair of parallel and symmetrically arranged second wing plates, the first wing plates and the second wing plates are on the same horizontal plane, one end of each first wing plate is a first perforated lug plate, and the other end is connected to one end of the corresponding second wing plate, and the other end of each second wing plate is a second perforated lug plate;

[0009] A first web, a portion of which is located between a pair of first wings and connected to the pair of first wings respectively, and another portion of which is located between a pair of second wings and connected to the pair of second wings respectively.

[0010] In one possible implementation of the first aspect described above, the two symmetrically arranged first wing plates and the first web plate form an I-shaped structure; the two symmetrically arranged second wing plates and the first web plate form an I-shaped structure.

[0011] In one possible implementation of the first aspect described above, the first wing plate is flush with and coincides with the center line of the second wing plate to which it is connected.

[0012] In one possible implementation of the first aspect described above, the first wing plate is welded to its corresponding second wing plate.

[0013] In one possible implementation of the first aspect described above, two symmetrically arranged second flanges pass through the pulley beam, and the first web is connected to one side of the wall panel of the pulley beam.

[0014] In one possible implementation of the first aspect described above, the tie rod connector further includes:

[0015] The second web plate is located between a pair of second flanges and is connected to a pair of second flanges respectively. The second web plate is symmetrical to the first web plate and is located on both sides of the wall plate of the pulley beam.

[0016] In one possible implementation of the first aspect described above, the first web is welded to the longitudinal centerline of two symmetrically arranged first flanges and two symmetrically arranged second flanges; the second web is welded to the longitudinal centerline of two symmetrically arranged second flanges.

[0017] In one possible implementation of the first aspect described above, the tie rod connector further includes:

[0018] Two outer web plates are symmetrically arranged on both sides of a pair of first flanges and a pair of second flanges. One end of each outer web plate is connected to a pulley beam, and the two outer web plates are parallel to the first web plate.

[0019] In one possible implementation of the first aspect described above, the two outer webs cover the junction of a pair of first wing plates and a pair of second wing plates.

[0020] According to a second aspect of this application, a bridge grab unloader is provided, including the bridge grab unloader tie rod connector of any of the above.

[0021] The above-mentioned technical solution of this application has at least one of the following beneficial effects:

[0022] According to the bridge-type grab unloader tie rod connector of this application, the tie rod connector is a segment of a segmented tie rod. Two symmetrically arranged tie rod connectors are connected by a pulley beam. The tie rod connector includes a pair of parallel and symmetrically arranged first flanges and a pair of parallel and symmetrically arranged second flanges. The first flanges and second flanges are on the same horizontal plane. One end of each first flange is a first perforated lug, and the other end is connected to one end of its corresponding second flange. The other end of each second flange is a second perforated lug. The tie rod connector also includes a first web plate. A portion of the first web plate is located between the pair of first flanges and connected to each pair of first flanges. The other portion of the first web plate is located between the pair of second flanges and connected to each pair of second flanges. This application eliminates the design of connecting the double lugs and the I-beam with square steel in existing conventional tie rods, and directly sets the perforated lugs on the first and second flanges, reducing stress concentration on the tie rod connector and improving its strength and service life.

[0023] In addition, unless otherwise specified in the technical solution of this application, the technical solution can be implemented by conventional means in the field. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a structural schematic diagram of a bridge grab unloader according to one embodiment of this application;

[0026] Figure 2 This is a schematic diagram of the structure of a tie rod connector according to one embodiment of this application;

[0027] Figure 3 This is a top view of a tie rod connector according to one embodiment of this application;

[0028] Figure 4 For the purposes of this application Figure 3 Schematic diagram of the cross-sectional structure along the AA direction.

[0029] Explanation of the labels in the attached drawings:

[0030] Tie rod connector 100; first wing plate 101; second wing plate 102; first web plate 103; second web plate 104; outer web plate 105;

[0031] Pulley beam 200. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only some, not all, of the embodiments of this application, and are used merely to explain this application and are not intended to limit it. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "inner," "outer," "both ends," "both sides," "bottom," and "top," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the elements referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," "upper-level," "lower-level," "main," and "secondary," etc., are used for descriptive purposes only and can be simply used to more clearly distinguish different components, and should not be construed as indicating or implying relative importance.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] A bridge-type grab unloader is a large port machinery equipment that uses a bridge structure for support and grabs to load and unload bulk cargo. To maintain the stability of the front beam, the bridge-type grab unloader fixes the beam with tie rods and controls the raising and lowering of the front beam with the tie rods.

[0036] See Figure 1 The diagram shows a structural schematic of a bridge-type grab unloader according to an embodiment of the present invention. The bridge-type grab unloader includes a tie rod connector 100 as proposed in this invention. The position of the tie rod connector 100 is as follows: Figure 1 As shown, the tie rod connector 100 is one segment of a segmented tie rod.

[0037] See Figure 2As shown, a bridge grab unloader tie rod connector 100 provided in one embodiment of the present invention is schematically shown, with a pulley beam 200 connecting two symmetrically arranged tie rod connectors 100.

[0038] The tie rod connector 100 includes a pair of parallel and symmetrically arranged first wing plates 101 and a pair of parallel and symmetrically arranged second wing plates 102, as well as a first web plate 103.

[0039] The first wing plate 101 and the second wing plate 102 are on the same horizontal plane. One end of each first wing plate 101 is a first perforated lug plate, and the other end is connected to one end of the corresponding second wing plate 102. The other end of each second wing plate 102 is a second perforated lug plate.

[0040] The first wing plate 101 is welded to its corresponding second wing plate 102. By welding the first wing plate 101 and the second wing plate 102 together, an integral structure can be formed, enabling them to work together to transmit force when bearing loads, effectively ensuring the structural strength and stability of the tie rod connector 100.

[0041] The first perforated lug plate is integrally formed with the first wing plate 101, and the second perforated lug plate is integrally formed with the second wing plate 102. This improves the structural strength and stability of the entire tie rod connector 100, reduces the stress at the connection between the lug plate and the wing plate, and enables it to withstand various loads generated during operation. It should be noted that the size of the openings in the first and second perforated lug plates can be determined according to the actual dimensions of the connecting components; this application does not limit the size of the openings.

[0042] A portion of the first web plate 103 is located between a pair of first wing plates 101 and is connected to the pair of first wing plates 101 respectively, and another portion of the first web plate 103 is located between a pair of second wing plates 102 and is connected to the pair of second wing plates 102 respectively.

[0043] Two symmetrically arranged second flanges 102 pass through the pulley beam 200, and the first web 103 is connected to one side of the wall panel of the pulley beam 200. The second flanges 102 pass entirely through the pulley beam 200, increasing the connection area between the tie rod connector 100 and the pulley beam 200. Furthermore, there are no breaks in the tie rod connector 100 at its connection with the pulley beam 200, thus achieving an effective connection between the tie rod connector 100 and the pulley beam 200 and avoiding stress concentration at the connection point.

[0044] Furthermore, the connection between the first web plate 103 and one side of the wall panel of the pulley beam 200 further enhances the stability of the connection. Through this connection method, the tie rod connector 100 can transmit force to the pulley beam 200, and then the pulley beam 200 can transmit it to other structural parts of the ship unloader.

[0045] Furthermore, the tie rod connector 100 also includes a second web 104. The second web 104 is located between and connected to a pair of second flanges 102 respectively, and the second web 104 and the first web 103 are symmetrically located on both sides of the wall panel of the pulley beam 200.

[0046] The second web 104 further enhances the structural strength and stability of the connection between the tie rod connector 100 and the pulley beam 200. The second web 104 and the first web 103 are symmetrically arranged on both sides of the pulley beam 200 wall panel, forming a reinforced structure. This structure can better resist the complex loads transmitted from the pulley beam 200, disperse stress, reduce deformation and damage at the connection, and improve the overall reliability of the connection between the tie rod connector 100 and the pulley beam 200.

[0047] Specifically, the first web plate 103 is welded to the longitudinal center lines of two symmetrically arranged first flanges 101 and two symmetrically arranged second flanges 102. The second web plate 104 is welded to the longitudinal center lines of the two symmetrically arranged second flanges 102. Welding the web plate to the longitudinal center lines of the flanges allows the web plate to evenly transmit force to the flanges when bearing loads, avoiding localized stress concentrations caused by uneven force distribution on the flanges due to improper connection positions.

[0048] Furthermore, the tie rod connector 100 also includes two symmetrically arranged outer web plates 105. The two outer web plates 105 are symmetrically arranged on both sides of a pair of first flanges 101 and a pair of second flanges 102, and one end of each of the two outer web plates 105 is connected to the pulley beam 200. The two outer web plates 105 are parallel to the first web plates 103.

[0049] The outer web plate 105 is disposed on both sides of the first flange 101 and the second flange 102 and is connected to the pulley beam 200, increasing the connection area and connection strength between the tie rod connector 100 and the pulley beam 200, making the entire connection structure more stable. At the same time, the outer web plate 105 is parallel to the first web plate 103, and can work together with the first web plate 103 to bear the load, further improving the bending and torsional resistance of the tie rod connector 100 and enhancing the overall rigidity of the structure.

[0050] Specifically, see Figure 3 The diagram shows a top view of a tie rod connector 100 according to an embodiment of the present invention, with two outer web plates 105 covering the connection between a pair of first wing plates 101 and a pair of second wing plates 102.

[0051] The outer web plate 105 protects the flange connection, distributes stress at the connection point, prevents damage caused by stress concentration or external factors, and improves the durability of the structure. Furthermore, the outer web plate 105 also provides protection against external corrosion, impacts, and other factors that could damage the connection, extending the service life of the tie rod connector 100 and reducing equipment maintenance costs.

[0052] like Figure 3 As shown, the first wing plate 101 is flush with the second wing plate 102 connected to it, and their center lines coincide. This structural design ensures the regularity and symmetry of the tie rod connector 100 structure, and the force can be more evenly distributed on the first wing plate 101 and the second wing plate 102, avoiding local stress concentration caused by structural asymmetry, thereby reducing the risk of structural damage and improving the overall performance and safety of the tie rod connector 100.

[0053] See Figure 4 The diagram shown is a cross-sectional view of a tie rod connector 100 according to an embodiment of the present invention. Figure 4 for Figure 3 Sectional view along the AA direction.

[0054] The two symmetrically arranged first wing plates 101 and the first web plate 103 form an I-beam structure. Similarly, the two symmetrically arranged second wing plates 102 and the first web plate 103 also form an I-beam structure. This I-beam structure provides high bending stiffness and strength, effectively resisting the bending moment experienced by the tie rod connector 100 during operation of the bridge grab unloader, reducing structural deformation, ensuring the stability and reliability of the tie rod connector 100 during operation, and extending its service life.

[0055] Based on the various embodiments of this application described above, in the absence of explicit denial or conflict, the technical features of one embodiment may be advantageously combined with one or more other embodiments.

[0056] The above descriptions are merely some embodiments of this application, used only to illustrate the technical solutions of this application, and not to limit it. It should be understood that those skilled in the art can make improvements or substitutions based on the above descriptions without departing from the inventive concept of this application, and all such improvements and substitutions should fall within the protection scope of this application. In this case, all details can be replaced with equivalent elements, and materials, shapes, and sizes can also be arbitrary.

Claims

1. A tie rod connector for a bridge-type grab unloader, wherein the tie rod connector is a segment of a segmented tie rod, and two symmetrically arranged tie rod connectors are connected by a pulley beam, characterized in that... The tie rod connector includes: A pair of parallel and symmetrically arranged first wing plates and a pair of parallel and symmetrically arranged second wing plates, the first wing plates and the second wing plates are on the same horizontal plane, one end of each first wing plate is a first perforated lug plate, and the other end is connected to one end of the corresponding second wing plate, and the other end of each second wing plate is a second perforated lug plate; A first web, a portion of which is located between a pair of first wings and connected to the pair of first wings respectively, and another portion of which is located between a pair of second wings and connected to the pair of second wings respectively.

2. The tie rod connector for the bridge-type grab unloader according to claim 1, characterized in that, The two symmetrically arranged first wing plates and the first web plate form an I-shaped structure; the two symmetrically arranged second wing plates and the first web plate form an I-shaped structure.

3. The bridge grab ship unloader pull rod connection of claim 1, wherein, The first wing plate is flush with the second wing plate to which it is connected and their center lines coincide.

4. The tie rod connector for the bridge-type grab unloader according to claim 1, characterized in that, The first wing plate is welded to its corresponding second wing plate.

5. The tie rod connector for the bridge-type grab unloader according to claim 1, characterized in that, Two symmetrically arranged second flanges pass through the pulley beam, and the first web is connected to one side of the wall panel of the pulley beam.

6. The tie rod connector for the bridge-type grab unloader according to claim 5, characterized in that, The tie rod connector also includes: The second web plate is located between a pair of second flanges and is connected to a pair of second flanges respectively. The second web plate is symmetrically located on both sides of the wall plate of the pulley beam with the first web plate.

7. The tie rod connector for the bridge-type grab unloader according to claim 6, characterized in that, The first web plate is welded to the longitudinal center line of two symmetrically arranged first flanges and two symmetrically arranged second flanges; the second web plate is welded to the longitudinal center line of two symmetrically arranged second flanges.

8. The bridge grab ship unloader pull rod connection of claim 1, wherein, The tie rod connector also includes: Two outer web plates are symmetrically arranged on both sides of a pair of first wing plates and a pair of second wing plates. One end of each of the two outer web plates is connected to the pulley beam, and the two outer web plates are parallel to the first web plate.

9. The bridge grab ship unloader pull rod connection of claim 8, wherein, The two outer webs cover the junction of a pair of first wing plates and a pair of second wing plates.

10. A bridge-type grab unloader, characterized in that, Includes the tie rod connector for the bridge grab unloader as described in any one of claims 1 to 9.

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