Multi-stress-point loading test device for hull beam

Abstract

The utility model relates to a multi-stress-point loading test device for a ship body beam, which belongs to the field of ship body stress analysis equipment and is provided with a bottom stress loading tool and a side stress loading tool, so that the collection of multi-stress-point data of the bottom and the side of the ship body beam is realized, the collection comprehensiveness of the stress data is greatly enhanced, and the test efficiency is improved. Therefore, a more accurate stress analysis model can be established; the clamp assembly, the bottom stress loading tool and the side stress loading tool can move on the workbench, and the loading position of the hull beam can be flexibly adjusted according to test requirements, so that stress data acquisition of multiple positions of the hull beam is realized, and the reliability of stress data acquisition is further enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to ship stress analysis equipment field, concretely is a kind of multi-stress point loading test device for ship beam. BACKGROUND

[0002] The stress model test of ship beam is to realize the collection of the stress data of ship beam by arranging stress sensors at different positions of ship beam after loading, establish stress analysis model, equivalent application to the stress monitoring and analysis of real ship, provide a real, reliable way for numerical analysis method. Further applied to the stress monitoring of real ship, improve the accuracy and reliability of the stress analysis result of real ship, and have important effect on the safe use and real-time monitoring of real ship.

[0003] Most of ship beams are slender structures, especially prone to longitudinal bending deformation after ship bearing, and most of the current test models are carried out around the longitudinal bending of ship beam, i.e. loading simulation bearing stress at the bottom of ship beam. However, in use, in addition to bearing stress, the side of the real ship also often collides with stress, which also has a significant impact on the structural strength of the whole ship. Therefore, it is of great significance to design a loading test device that can consider the bottom and side of the ship beam for collecting stress data and establishing a more comprehensive and accurate stress analysis model. SUMMARY

[0004] To solve the above problems, the utility model provides a kind of multi-stress point loading test device for ship beam, can realize the loading test of the bottom and side of ship beam, to collect more comprehensive stress data, to construct more accurate stress analysis model. The technical scheme adopted by the utility model is as follows:

[0005] A kind of multi-stress point loading test device for ship beam, including workbench, a pair of fixture assemblies, at least one bottom stress loading tool and at least one side stress loading tool are arranged on the workbench;

[0006] The fixture assembly is arranged left and right for clamping ship beam;The side stress loading tool includes base, vertical lifting cylinder, transversely arranged support plate, loading cylinder and loading head, the base is installed on the workbench, the lifting cylinder is installed on the base, the support plate is installed on the extension end of lifting cylinder, the transversely arranged loading cylinder is installed on the support plate, and the extension end of the loading cylinder is provided with loading head.

[0007] The above-mentioned multi-stress point loading test device for ship beam, the fixture assembly, bottom stress loading tool and side stress loading tool can slide on the workbench respectively, and the sliding structure adopts screw nut transmission.

[0008] The aforementioned multi-stress point loading test device for ship hull beams has a rotatable mounting seat on the base, the base and the mounting seat are connected by a turntable, the lifting cylinder is mounted on the mounting seat, and the mounting seat and the base are fixed in position or loosened and rotated by a pin.

[0009] The aforementioned multi-stress-point loading test device for ship hull beams has a mounting block on the support plate, the loading cylinder is mounted on the mounting block, the support plate has a U-shaped cross-section, and multiple sets of connecting holes are provided on both sides of the support plate. The mounting block is connected to the support plate through any set of connecting holes.

[0010] The aforementioned multi-stress-point loading test device for ship hull beams has a loading head that is detachably mounted on the extended end of the loading cylinder; the support plate is provided with several detachable counterweights.

[0011] The aforementioned multi-stress-point loading test device for ship hull beams includes a clamp assembly comprising a support frame, a pair of side clamps, and a pressure plate mounted on a workbench. The side clamps are symmetrically and slidably arranged on the support frame. The upper end of each side clamp has a slot. Both ends of the pressure plate pass through the slot and are connected to the support frame via screws.

[0012] The above-mentioned multi-stress point loading test device for hull beams has a support frame with a sliding groove and a fixing groove. The bottom of the side clamp is slidably installed in the sliding groove. The fixing groove has a T-shaped cross section and has several slidable nut seats inside. The bottom of the side clamp is fastened or loosened to the nut seats with bolts.

[0013] The beneficial effects of this utility model are as follows:

[0014] Firstly, this device is equipped with not only bottom stress loading fixtures but also side stress loading fixtures, enabling the collection of multi-stress point data at the bottom and sides of the hull beam. This greatly enhances the comprehensiveness of stress data collection, thereby allowing for the establishment of more accurate stress analysis models.

[0015] Secondly, the fixture assembly, bottom stress loading fixture, and side stress loading fixture can all move on the worktable, allowing for flexible adjustment of the loading position on the hull beam according to test requirements. This enables the acquisition of stress data at multiple locations on the hull beam, further enhancing the reliability of stress data acquisition.

[0016] Third, the clamping position of the clamping assembly is adjustable, which can adapt to different specifications of hull beams and has good versatility.

[0017] Fourth, the loading head of the side stress loading fixture is detachable and replaceable, which can simulate different types of external forces on a real ship, further improving the accuracy of stress data acquisition. Attached Figure Description

[0018] Figure 1It is the whole structure schematic view of the embodiment of the utility model;

[0019] Figure 2 It is the clamp assembly structure schematic view of the embodiment of the utility model;

[0020] Figure 3 It is the support frame cross section schematic view of the embodiment of the utility model;

[0021] Figure 4 It is the side stress loading tool structure schematic view of the embodiment of the utility model;

[0022] Figure 5 It is the test state schematic view of the embodiment of the utility model.

[0023] In the drawing: 1 is workbench, 2 is hull girder, 3 is clamp assembly, 4 is bottom stress loading tool, 5 is side stress loading tool, 6 is synchronous pulley mechanism, 7 is reduction motor A, 8 is manual adjustment wheel, 9 is reduction motor B, 31 is support frame, 32 is side clamping plate, 33 is pressing plate, 34 is screw rod, 35 is sliding slot, 36 is nut seat, 51 is base, 52 is mounting seat, 53 is bolt, 54 is lifting cylinder, 55 is support plate, 56 is mounting block, 57 is loading cylinder, 58 is loading head, 59 is counterweight. DETAILED DESCRIPTION

[0024] The technical content of the utility model will be explained in detail in combination with the drawings. The following implementation is exemplary, and aims at providing further explanation to the present application. Unless otherwise specified, all technical terms used have the same meaning as that understood by the person skilled in the art. The electrical control system and the selection of parts in the implementation are all in the prior art mode and the commercially available products.

[0025] The embodiment is a kind of hull girder multi-stress point loading test device, as shown in Figure Figure 1 It includes a pair of clamp assemblies 3, two bottom stress loading tools 4 and a side stress loading tool 5 on the workbench 1.

[0026] As shown in Figure 1 And Figure 2 The clamp assembly 3, the bottom stress loading tool 4 and the side stress loading tool 5 can slide on the workbench 1 respectively, and the sliding structure all adopts screw nut transmission.

[0027] The clamping assembly 3 is arranged on the left and right to clamp the hull beam 2, and includes a support frame 31, a pair of side clamping plates 32, and a pressure plate 33 set on the workbench 1. Specifically, the support frame 31 has two legs at the bottom, and the corresponding workbench 1 has two long slide grooves. Each slide groove is equipped with a bidirectional lead screw nut mechanism (also called a positive and negative thread lead screw nut mechanism). These two bidirectional lead screw nut mechanisms are driven by a reduction motor A7 and a synchronous pulley mechanism 6, so that the clamping assembly 3 can move synchronously in opposite directions.

[0028] Specifically, the side clamping plates 32 are symmetrically and slidably arranged on the support frame 31. The upper end of each side clamping plate 32 has a slot, and both ends of the pressure plate 33 pass through the slot and are connected to the support frame 31 via screws 34, facilitating assembly and disassembly. Furthermore, the support frame 31 has a sliding groove 35 and a fixing groove, and the bottom of the side clamping plates 32 is slidably mounted in the sliding groove 35. Figure 3 As shown, the fixing groove has a T-shaped cross-section and contains several sliding nut seats 36. The bottom of the side clamping plate 32 is fastened to or loosened from the nut seats 36 using bolts. In this way, the spacing between the side clamping plates 32 is adjustable, making it suitable for clamping hull beams of different specifications.

[0029] like Figure 1 and Figure 5 As shown, two bottom stress loading fixtures 4 are provided, each controlled by a manually adjustable wheel 8 via a screw-nut mechanism for sliding adjustment. Since different types of actual ships have different cargo hold locations, and thus different load-bearing locations, adjusting the position of the bottom stress loading fixtures 4 simulates the bottom stress at different locations on the hull beam 2, allowing for the construction of a more accurate stress model. The bottom stress loading fixtures 4 can utilize existing components, resulting in a relatively simple structure. Figure 1 As shown, it includes a base, a lifting loading cylinder, and a rod-shaped loading component to achieve bottom stress loading.

[0030] like Figure 1 and Figure 4 As shown, the side stress loading fixture 5 includes a base 51, a vertical lifting cylinder 54, a horizontal support plate 55, a loading cylinder 57, and a loading head 58. The base 51 is slidably mounted on the worktable 1 using a screw and nut mechanism and is driven by a geared motor B9. The lifting cylinder 54 is mounted on the base 51, and the support plate 55 is mounted on the extended end of the lifting cylinder 54. The horizontally positioned loading cylinder 57 is mounted on the support plate 55, and the loading head 58 is mounted on the extended end of the loading cylinder 57. The lifting cylinder 54 and the loading cylinder 57 can be hydraulic cylinders. The lifting cylinder 54 is used to adjust the vertical position of the loading head 58 relative to the hull beam 2, and the loading cylinder 57 is used to apply stress to the side of the hull beam 2.

[0031] Furthermore, such as Figure 4As shown, the base 51 is provided with a rotatable mounting seat 52, the base 51 and the mounting seat 52 are connected by a rotary disc, the lifting cylinder 54 is installed on the mounting seat 52, the mounting seat 52 and the base 51 are provided with a jack, the position between the two can be fixed or released by the jack 53. When the ship body beam 2 is loaded and unloaded, in order to avoid collision with the side stress loading tool 5, the jack 53 can be pulled out to rotate the mounting seat 52.

[0032] Further, the support plate 55 is provided with a mounting block 56, the loading cylinder 57 is installed on the mounting block 56, the cross section of the support plate 55 is U-shaped, the support plate 55 is provided with a plurality of connecting holes on both sides, the mounting block 56 is connected to the support plate 55 through any one connecting hole, so that the position of the mounting block 56 can be adjusted to adjust the position of the loading cylinder 57, so as to adapt to the inclination of the side of the ship body beam 2.

[0033] Further, the loading head 58 is detachably installed on the extension end of the loading cylinder 57, so that different types of loading heads 58 can be replaced, in this embodiment, the loading head 58 is block-shaped, and according to the working condition of the actual ship, the shape of the plate and the shape of the rod can also be selected to simulate the collision stress condition of the actual ship with other ships, reefs and other ships, so as to collect more comprehensive stress data. The support plate 55 is an elongated piece, provided with a plurality of detachable counterweight blocks 59, used to counterweight the loading cylinder 57, so as to avoid uneven stress on the support plate 55 affecting the service life. The counterweight block 59 can be magnetically installed on the support plate 55, which is convenient to disassemble.

[0034] The above is only the preferred embodiment of the present application, it should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, a number of changes or improvements can be made, these changes or improvements should also be considered as the protection scope of the present application.

Claims

1. A multi-stress point loading test device for hull girder, comprising a workbench (1), characterized in that: The workbench (1) is provided with a pair of clamp assemblies (3), at least one bottom stress loading tool (4) and at least one side stress loading tool (5); The clamp assemblies (3) are arranged on the left and right sides of the workbench (1) for clamping the hull beam (2); the side stress loading tool (5) comprises a base (51), a vertical lifting cylinder (54), a transversely arranged support plate (55), a loading cylinder (57) and a loading head (58), the base (51) is installed on the workbench (1), the lifting cylinder (54) is installed on the base (51), the support plate (55) is installed on the extending end of the lifting cylinder (54), the loading cylinder (57) is transversely arranged on the support plate (55), and the extending end of the loading cylinder (57) is provided with the loading head (58).

2. The multi-stress point loading test apparatus for a hull girder according to claim 1, characterized by: The clamp assemblies (3), the bottom stress loading tool (4) and the side stress loading tool (5) are respectively slidably arranged on the workbench (1), and the sliding structure adopts a screw nut transmission.

3. The multi-stress point loading test apparatus for a hull girder according to claim 1, characterized by: The base (51) is provided with a rotatable mounting seat (52), the base (51) and the mounting seat (52) are connected through a rotating disc, the lifting cylinder (54) is installed on the mounting seat (52), and the mounting seat (52) and the base (51) are fixed in position or loosened and rotated through a latch (53).

4. The multi-stress point loading test apparatus for a hull girder according to claim 1, characterized by: The support plate (55) is provided with a mounting block (56), the loading cylinder (57) is installed on the mounting block (56), the cross section of the support plate (55) is in a U shape, a plurality of connecting holes are arranged on the two sides of the support plate (55), and the mounting block (56) is connected to the support plate (55) through any one of the connecting holes.

5. The multi-stress point loading test apparatus for a hull girder according to claim 1, characterized by: The loading head (58) is detachably installed on the extending end of the loading cylinder (57); a plurality of detachable counterweight blocks (59) are arranged on the support plate (55).

6. The multi-stress point loading test apparatus for a hull girder according to claim 1, characterized by: The clamp assembly (3) comprises a support frame (31) arranged on the workbench (1), a pair of side clamping plates (32) and a pressing plate (33), the side clamping plates (32) are symmetrically and slidably arranged on the support frame (31), the upper end of each side clamping plate (32) is provided with a clamping groove, and the two ends of the pressing plate (33) pass through the clamping grooves and are connected to the support frame (31) through a screw rod (34) respectively.

7. The multi-stress point loading test apparatus for a hull girder according to claim 6, characterized by: The support frame (31) is provided with a sliding groove (35) and a fixing groove, the bottom of each side clamping plate (32) is slidably installed in the sliding groove (35), the fixing groove is in a T shape in cross section and is provided with a plurality of slidable nut seats (36) therein, and the bottom of each side clamping plate (32) is fastened and connected to the nut seat (36) or loosened through a bolt.

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