A low-resistance guide frame bottom sliding fixture with rolling steel balls

Abstract

This invention discloses a low-resistance bottom sliding fixture for a guide frame with rolling steel balls, relating to the field of marine engineering equipment technology. It includes a docking platform and an alloy skid. A slide rail is provided on one side of the docking platform, and multiple sets of load-sharing crossbeams are provided at the bottom end of the slide rail. The bottom ends of the load-sharing crossbeams are fitted to the top ends of load-sharing longitudinal beams. The outer side of the alloy skid has equally spaced threaded holes. A clamping mechanism is provided on the outer side of the alloy skid, with a pressure plate at the top and nuts symmetrically provided at the bottom. Both the alloy skid and the pressure plate have arc-shaped limiting grooves on their outer sides, which engage with rubber sleeves. The rubber sleeves wrap around the outside of the guide frame for clamping and fixing the bottom end of the guide frame. A sliding mechanism is provided at the bottom end of the alloy skid. The sliding mechanism utilizes symmetrically arranged balls and rollers to form rolling support under the limiting action of a retainer and a positioning shaft, reducing sliding resistance.

Description

Technical Field

[0001] This invention relates to the field of marine engineering equipment technology, specifically a low-resistance jacket bottom sliding tool with rolling steel balls. Background Technology

[0002] In offshore oil and gas resource and offshore wind power development projects, jacket structures are the core foundation support structures for offshore facilities. As marine development advances into deeper and more remote areas, jacket structures are showing a trend towards larger and heavier designs. Currently, the self-weight of mainstream large-scale marine jacket structures can generally reach thousands or even tens of thousands of tons. In the entire process of jacket construction, key stages such as prefabrication and transfer in the factory, loading onto ships at the dock, and launching from barges all require the use of sliding fixtures to achieve long-distance stable translation of heavy-duty jacket structures. The performance of the sliding fixtures directly determines the efficiency, safety, and economy of jacket construction. Currently, most conventional jacket support sliding fixtures in the industry adopt a sliding friction structure, with the core being a steel plate PTFE slide shoe pair. The translation of the jacket relies on the sliding fit between the slide shoe and the slide rail. This type of structure has many insurmountable technical drawbacks in practical engineering applications. Existing sliding fixtures often use welding or rigid clamping to fix the sliding shoes to the bottom of the jacket. Welding requires welding and cutting operations before and after construction, which is cumbersome and can cause irreversible damage to the jacket material, directly affecting the structure's corrosion resistance and service life. Traditional sliding shoe structures lack precise limiting and guiding designs, which can easily lead to sliding deviation and structural jamming under heavy off-center load conditions. Especially in long-distance sliding operations, this can easily cause safety accidents such as jacket torsion and overturning. At the same time, problems such as contact surface wear and sliding impact are prone to occur during sliding friction, making it impossible to guarantee the stability of the sliding process. Summary of the Invention

[0003] The purpose of this invention is to provide a low-resistance guide frame bottom sliding tooling with rolling steel balls to solve the problems mentioned in the prior art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a low-resistance guide frame bottom sliding fixture with rolling steel balls, comprising a connecting platform and an alloy slipper. A slide rail is provided on one side of the connecting platform, and multiple sets of load-sharing crossbeams are provided at the bottom end of the slide rail. The bottom ends of the multiple sets of load-sharing crossbeams are fitted to the top ends of load-sharing longitudinal beams. Threaded holes are equally spaced on the outer side of the alloy slipper. A clamping mechanism is provided on the outer side of the alloy slipper, with a pressure plate at the top and nuts symmetrically provided at the bottom. Both the alloy slipper and the pressure plate have arc-shaped limiting grooves on their outer sides, which engage with rubber sleeves. The rubber sleeves wrap around the outside of the guide frame for clamping and fixing the bottom end of the guide frame. A sliding mechanism is provided at the bottom end of the alloy slipper. The sliding mechanism utilizes symmetrically arranged balls and rollers to form rolling support under the limiting action of a retainer and a positioning shaft, thereby reducing sliding resistance.

[0005] As a preferred technical solution, the conduit frame, alloy slippers, clamping plate, nut, rubber sleeve, and arc-shaped limiting groove constitute a clamping mechanism. Alloy slippers are evenly spaced at the bottom end of the conduit frame, clamping plate is provided at the top of the alloy slippers, and nuts are symmetrically provided at the bottom end of the alloy slippers. Arc-shaped limiting grooves are provided on the outer sides of both the alloy slippers and the clamping plate. A rubber sleeve is engaged with the outer side of the arc-shaped limiting groove, and the rubber sleeve is wrapped around the outer side of the conduit frame.

[0006] As a preferred technical solution, an arc-shaped limiting groove is provided on the outer side of the alloy skate, and the outer side of the rubber sleeve is engaged with the alloy skate through the arc-shaped limiting groove.

[0007] As a preferred technical solution, the top of the alloy slipper is connected to a clamping plate by bolts, and the clamping plate is clamped and fixed to the bottom of the guide frame.

[0008] As a preferred technical solution, the slide rail, ball bearings, rollers, positioning shaft, and retainer form a sliding mechanism. An alloy slide shoe is connected to the outer side of the slide rail, and a positioning shaft is connected to the bottom end of the alloy slide shoe. Multiple sets of rollers are connected at equal intervals to the outer side of the positioning shaft. The retainer is symmetrically arranged on both sides of the alloy slide shoe, and ball bearings are provided on both sides of the alloy slide shoe.

[0009] As a preferred technical solution, retainers are symmetrically arranged in the grooves on both sides of the alloy slipper, and the retainers are engaged with the outer side of the ball.

[0010] As a preferred technical solution, the alloy slipper is fitted to the inner end face of the slide rail by the ball bearings on both sides.

[0011] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes alloy slippers, clamping plates, nuts, and bolts to form a mechanical clamping structure, eliminating the need for welding and fixing the guide frame. This completely avoids irreversible damage to the guide frame base material caused by welding and cutting operations, saving the tedious processes of base material repair and anti-corrosion layer redoing. Simultaneously, the arc-shaped limiting groove engages with the positioning rubber sleeve, tightly wrapping the outer wall of the guide frame. This provides flexible buffering, preventing indentations, wear, and damage to the anti-corrosion layer caused by rigid clamping. It also increases the friction of the clamping contact surface, further enhancing clamping stability. Furthermore, it isolates seawater, silt, and other impurities from entering the clamping gaps, providing long-term protection for the connection points, thus balancing clamping reliability and structural protection.

[0012] 2. This invention transforms the sliding friction of traditional sliding shoes into pure rolling friction through a sliding mechanism composed of balls, cages, rollers, and positioning shafts. This significantly reduces the thrust requirements of external jacking equipment, eliminating the need for ultra-large tonnage hydraulic jacking systems and substantially reducing equipment investment costs and operational energy consumption. Simultaneously, it significantly reduces the stringent requirements of the sliding reaction force on the wharf and barge bearing foundations. The grid-like load-sharing base formed by the load-sharing crossbeams and longitudinal beams evenly distributes the concentrated heavy load of the guide frame to the overall structure of the docking platform through alloy sliding shoes and rails, effectively avoiding the problem of plastic deformation caused by localized stress concentration in the rails, thus ensuring the structural rigidity and stability of the sliding base. Attached Figure Description

[0013] Figure 1 This is a top view of the structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the alloy sliding shoe and the clamping plate of the present invention; Figure 3 This is a schematic diagram of the structure of the alloy skate boot of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the alloy skid of the present invention; Figure 5 This is a schematic diagram of the connection structure between the alloy sliding shoe and the slide rail of the present invention.

[0014] The components include: 1. Connecting platform; 2. Load-bearing crossbeam; 3. Load-bearing longitudinal beam; 4. Slide rail; 5. Conduit frame; 6. Alloy slipper; 7. Pressure plate; 8. Nut; 9. Rubber sleeve; 10. Ball bearing; 11. Roller; 12. Arc-shaped limiting groove; 13. Threaded hole; 14. Positioning shaft; 15. Cage. Detailed Implementation

[0015] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0016] Example: Figure 1 and Figure 2 As shown, the present invention provides the following technical solution: a low-resistance guide frame bottom sliding fixture with rolling steel balls, comprising a connecting platform 1 and an alloy sliding shoe 6. A slide rail 4 is provided on one side of the connecting platform 1, and multiple sets of load-sharing crossbeams 2 are provided at the bottom end of the slide rail 4. The bottom ends of the multiple sets of load-sharing crossbeams 2 are fitted and connected to the top ends of load-sharing longitudinal beams 3. Threaded holes 13 are equally spaced on the outer side of the alloy sliding shoe 6, and a clamping mechanism is provided on the outer side of the alloy sliding shoe 6. The clamping mechanism passes through the alloy sliding shoe... The top of the 6 is provided with a clamping plate 7, and the bottom is symmetrically provided with nuts 8; the alloy slipper 6 and the clamping plate 7 are both provided with arc-shaped limiting grooves 12 on the outside, and the arc-shaped limiting grooves 12 are engaged with rubber sleeves 9. The rubber sleeves 9 are wrapped around the outside of the guide frame 5 and are used to clamp and fix the bottom of the guide frame. The bottom of the alloy slipper 6 is provided with a sliding mechanism. The sliding mechanism uses symmetrically arranged balls 10 and rollers 11 to form rolling support under the limiting action of the retainer 15 and the positioning shaft 14, respectively, to reduce sliding resistance.

[0017] like Figure 1 , Figure 2 and Figure 3 As shown, the conduit frame 5, alloy slippers 6, clamping plate 7, nut 8, rubber sleeve 9, and arc-shaped limiting groove 12 constitute a clamping mechanism. Alloy slippers 6 are evenly spaced at the bottom end of the conduit frame 5, clamping plate 7 is provided at the top end of the alloy slippers 6, and nuts 8 are symmetrically provided at the bottom end of the alloy slippers 6. Arc-shaped limiting grooves 12 are provided on the outer sides of both the alloy slippers 6 and the clamping plate 7. Rubber sleeves 9 are engaged with the outer side of the arc-shaped limiting grooves 12, and the rubber sleeves 9 are wrapped around the outer side of the conduit frame 5. Arc-shaped limiting grooves 12 are provided on the outer side of the alloy slippers 6, and the outer side of the rubber sleeves 9 is engaged with the alloy slippers 6 through the arc-shaped limiting grooves 12. The top end of the alloy slippers 6 is connected to the clamping plate 7 by bolts, and the clamping plate 7 is used to clamp and fix the conduit frame 5 to the bottom end.

[0018] Specifically, a grid-like load-sharing base is constructed through the connecting platform 1, slide rails 4, multiple sets of load-bearing crossbeams 2, and load-bearing longitudinal beams 3. During operation, the self-weight of the guide frame 5 and the operating load can be transferred sequentially to the slide rails 4, load-bearing crossbeams 2, and load-bearing longitudinal beams 3 via alloy slippers 6. The multiple sets of parallel-arranged load-bearing crossbeams 2 and load-bearing longitudinal beams 3 evenly distribute the concentrated heavy load to the overall structure of the connecting platform 1.

[0019] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the slide rail 4, ball bearings 10, rollers 11, positioning shaft 14, and retainer 15 constitute a sliding mechanism. An alloy slide shoe 6 is connected to the outer side of the slide rail 4, and the positioning shaft 14 is connected to the bottom end of the alloy slide shoe 6. Multiple sets of rollers 11 are connected at equal intervals to the outer side of the positioning shaft 14. The retainer 15 is symmetrically arranged on both sides of the alloy slide shoe 6, and ball bearings 10 are arranged on both sides of the alloy slide shoe 6. The retainer 15 is symmetrically arranged in the grooves on both sides of the alloy slide shoe 6, and the retainer 15 is engaged with the outer side of the ball bearings 10. The alloy slide shoe 6 is in contact with the inner end face of the slide rail 4 through the ball bearings 10 arranged on both sides.

[0020] During the sliding process, the balls 10 on both sides of the alloy slide shoe 6 are tightly fitted with the inner end face of the slide rail 4, forming a lateral limiting constraint. Combined with the isolation and positioning of the balls 10 by the cage 15, this effectively prevents the balls 10 from colliding, stacking, unevenly worn, or jamming. Simultaneously, multiple sets of rollers 11 on the bottom positioning shaft 14 roll synchronously, forming bottom auxiliary support and secondary guidance. This dual rolling guide structure effectively prevents lateral deviation of the alloy slide shoe 6 and the upper guide frame 5 during the sliding process.

[0021] The working principle of this invention is as follows: In the early stage of operation, the conduit frame 5 is first placed stably on the top of multiple sets of alloy slippers 6 arranged at equal intervals. The top clamping plate 7 is fastened to the alloy slipper 6 by the nut 8 at the bottom of the alloy slipper 6 and the bolt. The clamping plate 7 and the alloy slipper 6 are used to form a stable clamping and fixing of the bottom of the conduit frame 5, so as to prevent the conduit frame 5 from shifting, loosening or falling off during the sliding process. Meanwhile, the rubber sleeve 9, which is engaged with the alloy sliding shoe 6 and the outer arc-shaped limiting groove 12 of the clamping plate 7, tightly wraps the outer wall of the guide frame 5. The self-weight and working load of the guide frame 5 are transferred to the slide rail 4, the load-sharing crossbeam 2 and the load-sharing longitudinal beam 3 in sequence through the alloy sliding shoe 6. Multiple sets of parallel load-sharing crossbeams 2 and load-sharing longitudinal beams 3 form a grid-like load-sharing base, which evenly distributes the concentrated heavy load to the overall structure of the docking platform 1, avoiding excessive local load that could cause deformation of the slide rail 4 and damage to the docking platform 1, ensuring the structural stability of the entire sliding base, and providing a solid support foundation for subsequent sliding operations. During the sliding operation, the external jacking device applies a thrust, causing the alloy sliding shoe 6 to move directionally along the slide rail 4. At this time, the sliding mechanism plays a core role in reducing resistance: the balls 10 on both sides of the alloy sliding shoe 6, under the limiting constraint of the cage 15, perform pure rolling motion along the inner end face of the slide rail 4. The cage 15 effectively isolates the balls 10, preventing them from colliding, stacking, wearing unevenly, or getting stuck, ensuring smooth rolling; at the same time, multiple sets of rollers 11 on the positioning shaft 14 at the bottom of the alloy sliding shoe 6 roll synchronously, forming auxiliary rolling support at the bottom, further reducing sliding resistance. Throughout the sliding process, the ball bearing 10 and the roller 11 roll synchronously and in a directional manner, working with the slide rail 4 to achieve precise guidance, preventing the alloy slipper 6 and the upper guide frame 5 from lateral deviation or twisting, ensuring that the heavy guide frame 5 slides smoothly and at a constant speed along the preset trajectory. When the guide frame 5 slides with the alloy slipper 6 to the preset target position, the jacking operation stops.

[0022] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A low-resistance guide frame bottom sliding fixture with rolling steel balls, comprising a connecting platform (1) and an alloy sliding shoe (6), wherein a slide rail (4) is provided on one side of the connecting platform (1), and multiple sets of load-sharing crossbeams (2) are provided at the bottom end of the slide rail (4), and the bottom ends of the multiple sets of load-sharing crossbeams (2) are fitted and connected to the top end of a load-sharing longitudinal beam (3), and threaded holes (13) are provided at equal intervals on the outer side of the alloy sliding shoe (6), characterized in that: A clamping mechanism is provided on the outside of the alloy slipper (6). The clamping mechanism is provided with a pressing plate (7) at the top of the alloy slipper (6) and nuts (8) symmetrically provided at the bottom. Arc-shaped limiting grooves (12) are provided on the outside of both the alloy slipper (6) and the pressing plate (7). Rubber sleeves (9) are engaged in the arc-shaped limiting grooves (12). The rubber sleeves (9) are wrapped around the outside of the conduit frame (5) and are used to clamp and fix the bottom of the conduit frame. A sliding mechanism is provided at the bottom of the alloy slipper (6). The sliding mechanism uses symmetrically arranged balls (10) and rollers (11) to form rolling support under the limiting action of the retainer (15) and the positioning shaft (14) to reduce sliding resistance.

2. The low-resistance guide frame bottom sliding fixture with rolling steel balls according to claim 1, characterized in that: The conduit frame (5), alloy slipper (6), clamping plate (7), nut (8), rubber sleeve (9) and arc-shaped limiting groove (12) constitute a clamping mechanism. Alloy slippers (6) are evenly spaced at the bottom end of the conduit frame (5). A clamping plate (7) is provided at the top end of the alloy slipper (6). Nuts (8) are symmetrically provided at the bottom end of the alloy slipper (6). Arc-shaped limiting grooves (12) are provided on the outer sides of both the alloy slipper (6) and the clamping plate (7). A rubber sleeve (9) is engaged with the outer side of the arc-shaped limiting groove (12). The rubber sleeve (9) is wrapped around the outer side of the conduit frame (5).

3. The low-resistance guide frame bottom sliding fixture with rolling steel balls according to claim 2, characterized in that: The outer side of the alloy slipper (6) is provided with an arc-shaped limiting groove (12), and the outer side of the rubber sleeve (9) is engaged with the alloy slipper (6) through the arc-shaped limiting groove (12).

4. The low-resistance guide frame bottom sliding fixture with rolling steel balls according to claim 3, characterized in that: The top of the alloy slipper (6) is connected to a clamping plate (7) by bolts, and the clamping plate (7) is clamped and fixed to the bottom of the guide frame (5).

5. The low-resistance guide frame bottom sliding fixture with rolling steel balls according to claim 1, characterized in that: The slide rail (4), ball (10), roller (11), positioning shaft (14), and cage (15) constitute a sliding mechanism. The outer side of the slide rail (4) is connected to an alloy slipper (6), and the bottom end of the alloy slipper (6) is connected to the positioning shaft (14).

6. The low-resistance guide frame bottom sliding fixture with rolling steel balls according to claim 5, characterized in that: Multiple sets of rollers (11) are connected at equal intervals on the outer side of the positioning shaft (14). The retainer (15) is symmetrically arranged on both sides of the alloy slipper (6). Ball bearings (10) are provided on both sides of the alloy slipper (6).

7. The low-resistance guide frame bottom sliding fixture with rolling steel balls according to claim 6, characterized in that: The alloy slipper (6) has a retainer (15) symmetrically arranged in the grooves on both sides, and the retainer (15) is engaged with the outer side of the ball (10).

8. The low-resistance guide frame bottom sliding fixture with rolling steel balls according to claim 7, characterized in that: The alloy slipper (6) is in contact with the inner end face of the slide rail (4) through the ball bearings (10) arranged on both sides of it.

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