Ice block hoisting structure for ice block impact test

Abstract

The utility model discloses an ice block hoisting structure for an ice block impact test, and belongs to the technical field of ice making. The device comprises a door-shaped frame body and a supporting assembly, the door-shaped frame body comprises a horizontally-arranged connecting piece, two vertically-arranged supporting leg pieces and a sliding unit, one end of the connecting piece is fixedly connected with one supporting leg piece, and the other end of the connecting piece is connected with the other supporting leg piece through the sliding unit; the sliding unit can adjust the distance between the two supporting leg pieces. The supporting assembly comprises a supporting sleeve, a supporting wedge and an electromagnetic heating unit, the supporting sleeve is fixedly connected with the end, away from the connecting piece, of the supporting leg piece, the supporting wedge is movably inserted into the supporting sleeve, and the electromagnetic heating unit is arranged in the supporting sleeve so that the supporting wedge can be heated to be separated from ice blocks. According to the ice block lifting device, lifting and separation of ice blocks can be simplified.

Description

Technical Field

[0001] This utility model relates to the field of ice-making technology, and in particular to an ice block hoisting structure for ice block impact testing. Background Technology

[0002] Ships encounter various complex environmental conditions while sailing at sea, among which ice floes are a significant factor affecting navigational safety. To improve the seaworthiness of ships in polar or cold waters, specialized ice floe impact tests are required to simulate real sea conditions.

[0003] Existing ice-making equipment typically uses fixed containers for solidification when preparing experimental ice blocks. However, due to the large size and weight of the ice blocks, there is a technical challenge in removing them completely after solidification.

[0004] Traditional manual prying methods are not only inefficient but also prone to damaging the ice blocks, affecting the accuracy of experimental data. Furthermore, existing hoisting equipment lacks adjustable support structures, making it difficult to accommodate ice blocks of different sizes and posing a safety hazard of ice blocks falling off during testing. In the ice block securing stage, conventional mechanical clamping methods can easily damage the ice block surface, while metal components in low-temperature environments are prone to freezing and sticking to the ice, making release difficult. Utility Model Content

[0005] In view of this, it is necessary to provide an ice block lifting structure for ice block impact testing to solve the problem that existing molded ice blocks are difficult to remove from the container.

[0006] This utility model provides an ice block hoisting structure for ice block impact testing, used to constrain and hoist ice blocks, including:

[0007] A portal frame includes a horizontally arranged connector, two vertically arranged support legs, and a sliding unit. One end of the connector is fixedly connected to one of the support legs, and the other end of the connector is connected to the other support leg through the sliding unit. The sliding unit can adjust the distance between the two support legs.

[0008] A support assembly includes a support sleeve, a support wedge, and an electromagnetic heating unit. The support sleeve is fixedly connected to the end of the support leg away from the connector. The support wedge is movably inserted into the support sleeve. The electromagnetic heating unit is disposed in the support sleeve to heat the support wedge to detach it from the ice block.

[0009] Furthermore, the sliding unit includes a guide rail and a slider. The guide rail is disposed on the connector, and the slider is connected to another support leg. The slider is slidably engaged with the guide rail.

[0010] Furthermore, the sliding unit also includes a locking element, which is threadedly connected to the slider to lock the guide rail and the slider.

[0011] Furthermore, the electromagnetic heating unit includes an induction coil, which is disposed in the support sleeve and surrounds the support wedge, and the induction coil is capable of inductively heating the support wedge.

[0012] Furthermore, the support sleeve includes an annular sleeve body, in which the induction coil is embedded, and a hole is formed in the middle of the annular sleeve body to cooperate with the support wedge.

[0013] Furthermore, the ends of the support wedges that are far apart from each other are provided with an enlarged portion, which can prevent the support wedges from detaching from the annular sleeve.

[0014] Furthermore, the enlarged portion is provided with a threaded hole.

[0015] Furthermore, the connector is provided with a hoisting part for cooperating with the overhead crane.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] (1) The present invention provides an ice block hoisting structure for ice block impact testing, which is provided with a portal frame. The portal frame includes a horizontally arranged connector, two vertically arranged support legs, and a sliding unit. One end of the connector is fixed to one support leg, and the other end is connected to the other support leg through the sliding unit. The sliding unit can adjust the distance between the two support legs, so that it can be adapted to different containers before the ice blocks solidify, and can also provide sufficient space for the support legs to move when the support legs are separated from the ice blocks.

[0018] (2) The present invention provides an ice block hoisting structure for ice block impact testing, which includes a support assembly comprising a support sleeve, a support wedge, and an electromagnetic heating unit. The support sleeve is fixedly connected to the end of the support leg away from the connector. The support wedge is movably inserted into the support sleeve and is located in the space enclosed by the portal frame, providing uniform support to the bottom of the ice block. The electromagnetic heating unit is located in the support sleeve and can heat the support wedge, causing local melting or thermal expansion of the contact surface between the support wedge and the ice block, thereby reducing the bonding force between them, promoting the non-destructive separation of the support component and the ice block, significantly reducing the risk of ice block breakage, and improving the accuracy of impact test data. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 is a schematic diagram of the overall structure of this utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 3 ;

[0023] Figure 4 This is a schematic diagram of the overall structure of the present invention. Figure 4 ;

[0024] Figure 5 yes Figure 4 A schematic diagram of the AA-direction structure;

[0025] Figure 6 This is a schematic diagram of the supporting wedge structure in this utility model.

[0026] In the diagram, 100 is the portal frame; 110 is the connector; 111 is the hoisting unit; 120 is the support leg; 130 is the sliding unit; 131 is the guide rail; 132 is the slider; and 133 is the locking component.

[0027] 200, Support assembly; 210, Support sleeve; 211, Annular sleeve; 212, Hole; 220, Support wedge; 221, Enlarged part; 222, Threaded hole; 230, Electromagnetic heating unit; 231, Induction coil. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0029] This embodiment describes an ice block lifting structure for ice block impact testing, relating to the field of ice-making technology. By setting up a portal frame 100, two legs 120 are inserted into the sidewalls of the ice block, preventing lateral movement. A support wedge 220 is laterally inserted into the bottom of the ice block via the portal frame 100, evenly bearing the weight of the ice block. An electromagnetic heating unit 230 heats the support wedge 220, promoting its detachment from the ice block and facilitating subsequent ice block removal.

[0030] Please see Figures 1 to 6This embodiment provides an ice block hoisting structure for ice block impact testing, including a portal frame 100 and a support assembly 200. The portal frame 100 includes a horizontally arranged connector 110, two vertically arranged support legs 120, and a sliding unit 130. One end of the connector 110 is fixed to one support leg 120, and the other end is connected to the other support leg 120 through the sliding unit 130. The sliding unit 130 can adjust the distance between the two support legs 120. The sliding unit 130 can adjust the distance between the two support legs 120, which can adapt to different containers before the ice blocks solidify, and also provide sufficient space for the support legs 120 to move when the support legs are separated from the ice blocks.

[0031] The support assembly 200 includes a support sleeve 210, a support wedge 220, and an electromagnetic heating unit 230. The support sleeve 210 is fixedly connected to the end of the support leg 120 away from the connector 110. The support wedge 220 is movably inserted into the support sleeve 210 and is located in the space enclosed by the portal frame 100, providing uniform support to the bottom of the ice block. The electromagnetic heating unit 230 is disposed in the support sleeve 210 and can heat the support wedge 220, causing local melting or thermal expansion of the contact surface between the support wedge 220 and the ice block. This reduces the bonding force between the two, promotes the non-destructive separation of the support component from the ice block, significantly reduces the risk of ice block breakage, and improves the accuracy of impact test data.

[0032] During use, a portal frame 100 is installed above the ice mold container. The distance between the two legs is adjusted by the sliding unit 130 to match the width of the container. The support wedge 220 is inserted from the bottom of the support sleeve 210, and the friction between the support wedge 220 and the ice block is used for fixation. Pure water is injected into the container and frozen to cool it down, causing the pure water to solidify into ice blocks. The support wedge 220 and the support leg 120 are both frozen in the ice blocks. After hoisting and transportation, the ice blocks are hoisted out of the container. The electromagnetic heating unit 230 is energized to heat the support wedge 220. Due to local melting of the ice block or expansion of the support wedge 220, gaps are created at the contact surface of the ice block, allowing the support wedge 220 to detach from the ice block, thus avoiding damage to the ice block during the removal of the support wedge 220.

[0033] In some embodiments, please refer to Figure 3 and Figure 5 The sliding unit 130 includes a guide rail 131 and a slider 132. The guide rail 131 is mounted on the connector 110, and the slider 132 is connected to another support leg 120. The slider 132 is slidably engaged with the guide rail 131. The guide rail 131 is a linear guide structure mounted on the connector 110, which can be implemented using an I-beam rail or a T-slot rail. Its function is to provide a precise movement trajectory for adjusting the support leg spacing.

[0034] The slider 132 is a moving component that mates with the guide rail 131. Specifically, it can be implemented as a metal block with roller assemblies. Its function is to mechanically connect the support leg 120 and the guide rail 131 to form a slidable assembly relationship. The sliding engagement refers to a mechanical connection between the slider 132 and the guide rail 131 using a convex-concave fit. This can be achieved by having rollers engage with grooves or dovetail joints in the guide rail, ensuring both freedom of movement and structural rigidity.

[0035] When adjusting the span between the two outriggers 120, the operator can push the outrigger 120 connected to the slider 132 to slide along the length of the guide rail 131. The sliding engagement structure between the guide rail 131 and the slider 132 constrains the movement trajectory of the outrigger 120, preventing lateral deviation. When dealing with different containers, the operator can precisely adjust the outrigger spacing to match the width of the ice container, ensuring that the outrigger 120 can be stably supported on both sides of the container during hoisting. Simultaneously, sufficient room for movement can be provided to the outrigger 120 when it detaches from the ice.

[0036] As a further embodiment, the sliding unit 130 also includes a locking member 133, which is a component used to fix the relative position of the slider 132 and the guide rail 131. Specifically, it can be implemented using bolts or screws. Tightening the screws generates pressure, increasing the friction between the slider 132 and the guide rail 131. The locking member 133 is threadedly connected to the slider 132.

[0037] A threaded connection refers to a fixing method that achieves connection between components through the engagement of internal and external threads. Specifically, a bolt with external threads can be used in conjunction with a slider 132 with internal threads, and the tightness can be adjusted by manual rotation. A locking element 133 is screwed into the internal threaded hole 222 of the slider 132, with its end abutting against the surface of the guide rail 131 to create a clamping force. As the thread insertion depth increases, the clamping force of the locking element 133 on the guide rail 131 increases synchronously, ultimately forming a fixed constraint between the slider 132 and the guide rail 131. The locking process of the locking element 133 does not require external tools and can be quickly completed simply by rotating the locking element 133.

[0038] In some embodiments, please refer to Figure 5 The electromagnetic heating unit 230 includes an induction coil 231, which is disposed within the support sleeve 210 and surrounds the support wedge 220. The induction coil 231 can inductively heat the support wedge 220. The induction coil 231 is a conductive element that generates eddy currents through the principle of electromagnetic induction, and can be implemented using a copper spiral winding. When an alternating current is applied, a thermal effect is generated on the surface of the support wedge 220. The support wedge 220 is a metal component that forms a mechanical connection with the ice block, and can be made of a ferromagnetic material. Induction heating causes a temperature change at the contact surface between the support wedge 220 and the ice block.

[0039] Specifically, when the ice block and the support wedge 220 are frozen and fixedly connected, after the electromagnetic heating unit 230 is energized, the induction coil 231 generates a high-frequency alternating magnetic field. This magnetic field penetrates the support sleeve 210 and acts on the surface of the support wedge 220. As a conductor, the support wedge 220 generates eddy currents in the alternating magnetic field, rapidly heating up through the Joule effect, causing the ice layer at the contact surface between the support wedge 220 and the ice block to melt. When the temperature reaches a set threshold, the frozen bond between the support wedge 220 and the ice block is broken, and external force can then be used to detach the support wedge 220 from the ice block.

[0040] In some embodiments, please continue reading Figure 5 The support sleeve 210 includes an annular sleeve 211, induction coil 231 is embedded in the annular sleeve 211, and a hole 212 is formed in the middle of the annular sleeve 211 to cooperate with the support wedge 220.

[0041] The annular sleeve 211 is a hollow annular structure, which can be made of metal or high-temperature resistant composite material. It is used to support the induction coil 231 and restrict the movement path of the support wedge 220. The induction coil 231 is embedded in the annular sleeve 211, which means that the coil is wrapped inside the sleeve. It can be made of copper wire wound into a spiral shape and embedded in the pre-made groove of the sleeve. After being energized, it heats the support wedge 220 through electromagnetic induction.

[0042] The hole 212 is a through hole penetrating the middle of the annular sleeve 211. It can be designed with a circular or square cross-section to accommodate the support wedge 220 and form a sliding contact with its surface. Specifically, the annular sleeve 211 achieves local heating through an internally embedded induction coil 231. When the support wedge 220 is inserted into the hole 212, the electromagnetic heating unit 230 is activated and generates an alternating magnetic field, causing the surface of the support wedge 220 to heat up rapidly due to the eddy current effect.

[0043] The support wedges 220 are provided with an enlarged portion 221 at one end that is far apart from each other. The enlarged portion 221 is a protruding structure formed by the outward expansion of the end of the support wedges 220. Specifically, it can be achieved by integral molding or welding. Its size is larger than the inner diameter of the hole 212 of the annular sleeve 211, so as to form a mechanical limit after the support wedges 220 are inserted into the annular sleeve 211.

[0044] Specifically, when the support wedge 220 is inserted into the annular sleeve 211, the enlarged portion 221 cannot completely pass through the hole 212 due to size limitations, thus forming a fixed constraint between the support wedge 220 and the annular sleeve 211. The enlarged portion 221 can prevent the support wedge 220 from loosening easily in high temperature or vibration environments, achieving reliable constraint, simplifying the operation process and improving safety.

[0045] In some embodiments, please refer to Figure 6The enlarged part 221 has a threaded hole 222. The threaded hole 222 is a cavity structure with a spiral groove formed by machining on the end face of the enlarged part 221. Specifically, it can be achieved by standard thread milling or tapping process. The threaded hole 222 is used to form a threaded connection with external tools or fixed parts, providing a point of force for applying rotational force or traction force.

[0046] Specifically, when it is necessary to detach the support wedge 220 from the ice, a rigid connection can be formed by screwing a bolt into the threaded hole 222 of the expansion section 221, and then axial tension can be applied with the help of an overhead crane hook or a hand tool. The threaded connection effectively avoids surface damage caused by traditional welding or clamping methods. When the electromagnetic heating unit 230 induction heats the support sleeve 210, the structure of the threaded hole 222 allows the support wedge 220 to form a detachable connection with the external traction device, enabling quick assembly and disassembly without affecting heating efficiency.

[0047] For some real-time examples, please refer to Figures 1 to 5 The connecting component 110 refers to the horizontally arranged component in the portal frame 100, which can be implemented using a crossbeam or I-beam, used to connect the two support legs 120 and support the sliding unit 130. The lifting section 111 refers to the fixed structure on the connecting component 110 that matches the overhead crane hook. For example, it can be a welded lifting ring, a lug with through holes, or a hook with a slot, used for the overall lifting and transfer of the portal frame 100 by the overhead crane. The overhead crane hook can be connected to the portal frame 100 through the lifting section 111 to vertically lift the entire ice block lifting structure, allowing the ice block to detach from the container. The lifting section 111 avoids the risk of slippage that may occur when manually handling ice blocks, and at the same time, the spatial position of the ice block can be quickly adjusted by the movement of the overhead crane, achieving precise ice block delivery during the experiment.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the present utility model.

Claims

1. An ice block hoisting structure for ice block impact testing, used to constrain and hoist ice blocks, characterized in that, include: A portal frame includes a horizontally arranged connector, two vertically arranged support legs, and a sliding unit. One end of the connector is fixedly connected to one of the support legs, and the other end of the connector is connected to the other support leg through the sliding unit. The sliding unit can adjust the distance between the two support legs. A support assembly includes a support sleeve, a support wedge, and an electromagnetic heating unit. The support sleeve is fixedly connected to the end of the support leg away from the connector. The support wedge is movably inserted into the support sleeve. The electromagnetic heating unit is disposed in the support sleeve to heat the support wedge to detach it from the ice block.

2. The ice block hoisting structure for ice block impact testing according to claim 1, characterized in that, The sliding unit includes a guide rail and a slider. The guide rail is disposed on the connector, and the slider is connected to another support leg. The slider is slidably engaged with the guide rail.

3. The ice block hoisting structure for ice block impact testing according to claim 2, characterized in that, The sliding unit also includes a locking element, which is threadedly connected to the slider to lock the guide rail and the slider.

4. The ice block hoisting structure for ice block impact testing according to claim 1, characterized in that, The electromagnetic heating unit includes an induction coil, which is disposed in the support sleeve and surrounds the support wedge. The induction coil is capable of inductively heating the support wedge.

5. The ice block hoisting structure for ice block impact testing according to claim 4, characterized in that, The support sleeve includes an annular sleeve body, in which the induction coil is embedded, and a hole is formed in the middle of the annular sleeve body to cooperate with the support wedge.

6. The ice block hoisting structure for ice block impact testing according to claim 5, characterized in that, The supporting wedges are provided with an enlarged portion at their opposite ends, which can prevent the supporting wedges from detaching from the annular sleeve.

7. The ice block hoisting structure for ice block impact testing according to claim 6, characterized in that, The enlarged portion has a threaded hole.

8. The ice block hoisting structure for ice block impact testing according to claim 1, characterized in that, The connector is equipped with a hoisting part for use with the overhead crane.

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