Slidable safety belt suspension system for ladle car maintenance

Abstract

The utility model discloses a kind of slidable safety belt suspension systems for ladle car maintenance, including ladle car, further including safety belt suspension device being set on the ladle car, the safety belt suspension device includes load-bearing column being fixed in the edge of the ladle car with the ladle car by welding mode, the load-bearing column forms open space along transverse and longitudinal direction above the ladle car, and the load-bearing column is along longitudinal direction height and transverse height same, the safety belt suspension device further includes operation level safety rope system being set on the load-bearing column, detachable safety belt is connected on the operation level safety rope system, the safety belt can slide along the operation level safety rope system, the load-bearing column is symmetrically arranged in the transverse direction of the ladle car, and the load-bearing column is symmetrically arranged in the longitudinal direction of the ladle car.

Description

Technical Field

[0001] This utility model belongs to the field of special equipment safety protection technology in the metallurgical industry, specifically relating to a sliding safety belt suspension system for ladle car maintenance. Background Technology

[0002] An analysis of existing problems in the maintenance of steel ladle cars reveals that the attachment point height is insufficient. In traditional steel ladle cars (where the roof is approximately 2.5 meters from the ground), the safety belt is directly attached to the car's guardrail or a fixed hook during maintenance. When the safety belt length exceeds 2.5 meters (e.g., a standard 3-meter safety belt), there is a risk of personnel falling and hitting the ground. The impact force is excessive; even if the person does not hit the ground, due to the attachment point height of only 2.5 meters, the actual fall distance is often greater than 1.5 meters (including the height of the person's center of gravity), generating an impact force far exceeding the human body's tolerance limit (>6kN), easily causing internal organ damage and spinal compression fractures.

[0003] In existing technologies, the scope of maintenance activities on ladle cars is limited, and single-point attachment forces workers to frequently unfasten their safety belts, increasing the time spent in an unprotected state, which violates the principle of "high attachment, low use".

[0004] To address the shortcomings of existing solutions, the practical approach involves raising the steel ladle car structure, which is costly, affects equipment stability, requires scaffolding platforms, has a long construction period, and ties up production time. Vehicle-mounted lifting platforms, on the other hand, are complex, have high maintenance costs, and are unsuitable for confined spaces.

[0005] In view of the above factors, a sliding safety belt suspension system for ladle car maintenance is provided. This modular high-mounted safety belt suspension system is applied to maintenance work on the top of ladle cars. It is particularly suitable for solving the problem of excessive impact force caused by insufficient buffer distance for high-altitude falls and limited hanging point height, while expanding the safe range of movement for workers. Utility Model Content

[0006] The purpose of this invention is to provide a sliding seat belt suspension system for the maintenance of ladle cars, so as to solve the problems mentioned in the background art.

[0007] The purpose of this utility model is achieved through the following technical solution: a sliding seat belt suspension system for ladle car maintenance, including a ladle car and a seat belt suspension device installed on the ladle car. The seat belt suspension device includes a load-bearing column fixed to the edge of the ladle car by welding. The load-bearing column forms an open space above the ladle car along the horizontal and vertical directions, and the height of the load-bearing column along the vertical direction is the same as the horizontal height.

[0008] The safety belt suspension device also includes a working horizontal safety rope system installed on the load-bearing column, on which the safety belt is detachably connected, and the safety belt can slide along the working horizontal safety rope system.

[0009] Furthermore, the load-bearing columns are symmetrically arranged in the transverse direction of the ladle car, and symmetrical load-bearing columns are arranged in the longitudinal direction of the ladle car.

[0010] Furthermore, the load-bearing column is made of Q235B hot-rolled channel steel, the height of the load-bearing column is 2000±10mm, the load-bearing column is welded to the two sides of the steel ladle car, ≥300mm from the end of the car body, and a through hole is opened at the top of the load-bearing column, the hole opening is chamfered R2mm and polished to Ra≤3.2μm.

[0011] Furthermore, the working horizontal safety rope system includes a steel wire rope, which is a Φ10mm galvanized steel wire rope with a breaking strength ≥54kN;

[0012] The two ends of the steel wire rope are detachably connected to through holes in the load-bearing column.

[0013] Furthermore, the wire rope includes three YT-10 type wire rope clamps at both ends, spaced 60mm apart. The wire rope clamps are U-shaped and are tightened to the short side of the wire rope by bolts. Both ends of the wire rope are connected to turnbuckles, and the other end of the turnbuckles is detachably connected to a shackle. The shackle is detachably connected to the positioning end, and the positioning end is detachably connected to the through hole at the top of the load-bearing column.

[0014] The positioning end is U-shaped and is fixed to the through hole by bolts / nuts.

[0015] Furthermore, the shackle is a U-shaped buckle structure, and the shackle is detachably connected to the through hole on the positioning end. The detachable connection is a bolt connection, and a through channel is provided on the shackle for fixing with bolts / nuts.

[0016] Furthermore, the through holes on the load-bearing columns in the horizontal and vertical directions are spaced vertically, and the distance between the through holes is greater than the width of the positioning end, and the distance between adjacent through holes does not exceed twice the width of the shackle.

[0017] Furthermore, the wire rope is pre-tightened by the turnbuckle to a sag of ≤1% of the span, the wire rope tension maintains the elastic deformation of the wire rope ≤0.1%, and the sag increment ≤5mm.

[0018] Furthermore, the wire rope is slidably provided with a hanging point, the hanging point including a sleeve, the sleeve being U-shaped, a suspension belt being fixedly provided on the sleeve, and a closed ring being provided on the suspension belt to cooperate with the safety belt.

[0019] A method for installing a sliding seatbelt suspension system for maintenance of a ladle car, specifically including the following steps;

[0020] Step 1: Matrix Pretreatment

[0021] Grind the steel ladle car belt welding area to Sa2.5 cleanliness level, locate the load-bearing column installation point and bolt or weld it, with verticality error ≤1‰, where the load-bearing column is a steel structure;

[0022] Step 2: Welding of diagonal braces

[0023] Located 600mm from the bottom of the channel steel (i.e., the top surface of the ladle car). Configuration: 40×40×4mm angle steel, welded to the channel steel at a 45° angle to form a stable triangular structure. J422 welding rods are used. Spot welding is performed first for positioning, followed by full welding. The weld height is 6mm. After cooling, epoxy zinc-rich primer is applied for rust prevention.

[0024] Step 3: Assembly of the horizontal safety rope system

[0025] Connect the wire rope to the turnbuckle, and connect the turnbuckle to the shackle. The shackle is U-shaped and is connected to the positioning end by bolts / nuts.

[0026] Step 4: Assemble the horizontal safety rope system and the load-bearing column.

[0027] Through holes are set on the load-bearing column, and the through holes are set on different end faces of the load-bearing column to realize horizontal and vertical installation. The positioning end connected by the two ends of the steel wire rope is connected to the different through holes on the load-bearing column.

[0028] The positioning end of the steel wire rope connection in the horizontal direction is inserted into the load-bearing column. The positioning hole on the positioning end overlaps with the through hole and is locked and fixed by bolts / nuts. The positioning end is coaxial with the load-bearing column.

[0029] The positioning end of the steel wire rope connection in the longitudinal direction is clamped onto the load-bearing column through the groove, wherein the positioning hole on the positioning end overlaps with the through hole and is locked and fixed by bolts / nuts;

[0030] The above-mentioned structure, which is surrounded by the working horizontal safety rope system in both the horizontal and vertical directions, facilitates the sliding suspension of the safety belt through the working horizontal safety rope system.

[0031] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0032] This utility model is a modular high-mounted safety belt suspension system for maintenance work on the top of steel ladle cars. It is particularly suitable for solving the problem of excessive impact force caused by insufficient buffer distance and limited hanging point height when falling from height, while expanding the safe range of movement for workers.

[0033] This utility model provides rigid support with a channel steel column, flexible buffering with a wire rope, and anti-overturning moment with diagonal bracing. It enables high attachment points for safety belts (≥4.3 meters from the ground), sliding attachment, and anti-overturning reinforcement, ensuring a fall distance ≤0.6 meters, while covering the entire width of the working area on the roof of the steel ladle truck. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the connection between the steel ladle car and the load-bearing column of this utility model;

[0035] Figure 2 This is a schematic diagram showing the connection between the through hole on the load-bearing column and the horizontal safety rope system of this utility model;

[0036] Figure 3 This is another schematic diagram showing the connection between the through hole on the load-bearing column and the working horizontal safety rope system of this utility model;

[0037] Figure 4 This is a schematic diagram of the connection between the wire rope and the shackle in this utility model;

[0038] Figure 5 This is a schematic diagram of the connection between the shackle and the positioning end of this utility model;

[0039] Figure 6 This is a schematic diagram of another state of connection between the shackle and the positioning end of this utility model;

[0040] Figure 7 This is a partially enlarged schematic diagram of the steel wire rope of this utility model;

[0041] Figure 8 This is a schematic diagram of the positioning end of this utility model;

[0042] Figure 9 This is a schematic diagram of the hanging point of this utility model. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element 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 utility model.

[0046] like Figure 1-9 As shown, a sliding seat belt suspension system for maintenance of a ladle car includes a ladle car 1 and a seat belt suspension device 2 installed on the ladle car 1. The seat belt suspension device 2 includes a load-bearing column 3 that is fixed to the edge of the ladle car 1 by bolts or welding. The load-bearing column 3 forms an open space above the ladle car 1 along the horizontal and vertical directions, and the height of the load-bearing column 3 along the vertical direction is the same as the horizontal height.

[0047] The safety belt suspension device 2 also includes a working horizontal safety rope system 4 installed on the load-bearing column 3. The working horizontal safety rope system 4 is detachably connected to the safety belt 5, and the safety belt 5 can slide along the working horizontal safety rope system 4.

[0048] To facilitate the fixing of the safety belt suspension device 2 by setting load-bearing columns 3 during use, the load-bearing columns 3 are symmetrically arranged in the transverse direction of the ladle car 1, and the load-bearing columns 3 are symmetrically arranged in the longitudinal direction of the ladle car 1.

[0049] The load-bearing column 3 is made of Q235B hot-rolled channel steel. The load-bearing column 3 has a height of 2000±mm. The load-bearing column 3 is welded to the two sides of the steel ladle car 1, ≥300mm from the end of the car body. The top of the load-bearing column 3 has a through hole with a chamfered R2mm and polished to Ra≤3.2μm.

[0050] For ease of use, the working horizontal safety rope system 4 includes a steel wire rope 6, which is a Φ10mm galvanized steel wire rope with a breaking strength ≥54kN.

[0051] The two ends of the steel wire rope 6 are detachably connected to the through holes on the load-bearing column 3.

[0052] The working horizontal safety rope system 4 is laid out around the ladle car 1. In use, the working horizontal safety rope system 4 on either side can be removed.

[0053] To facilitate the tension of the wire rope 6 during use, the two ends of the wire rope 6 are fixed by three YT-10 type wire rope clamps 7 with a spacing of 60mm. The wire rope clamps 7 are U-shaped and are tightened to the short side end of the wire rope 6 by bolts. The two ends of the wire rope 6 are connected to turnbuckles 8, which have round connectors at both ends. The other end of the turnbuckles 8 is detachably connected to a shackle 9, which is U-shaped and has a hole that cooperates with the positioning end.

[0054] The shackle 9 is detachably connected to the positioning end 10 (by bolts / nuts), and the positioning end 10 is detachably connected to the through hole 11 opened at the top of the load-bearing column 3.

[0055] The positioning end 10 is U-shaped and is fixed to the through hole by bolts / nuts. When the positioning end 10 is installed in the vertical direction, a channel is opened on the positioning end 10 to cooperate with the load-bearing column.

[0056] To facilitate easy disassembly and replacement during use, the shackle 9 is a U-shaped buckle structure. The shackle 9 is detachably connected to the through hole 12 on the positioning end 10. The detachable connection is a bolt connection. A through channel is provided on the shackle 9 for fixing with bolts / nuts.

[0057] To facilitate the installation of the positioning end in both the horizontal and vertical directions during use and to ensure that there is no interference between the upper and lower parts, the through holes 11 on the load-bearing column 3 in the horizontal and vertical directions are arranged at intervals, and the distance between the through holes 11 is greater than the width of the positioning end 10, and the distance between adjacent through holes does not exceed twice the width of the shackle.

[0058] To facilitate maintaining the tension and sag of the wire rope during use, the wire rope 6 is pre-tightened to sag ≤ 1% of the span by the turnbuckle 8, and the tension of the wire rope 6 is maintained to keep the elastic deformation of the wire rope 6 ≤ 0.1% and the sag increment ≤ 5mm.

[0059] In order to facilitate the sliding of the sleeve and the safety belt on the wire rope during use, the wire rope 6 is provided with a hanging point 13. The hanging point 13 includes a sleeve 14, which is U-shaped. A suspension belt 15 is fixedly installed on the sleeve 14, and a closed ring 16 that cooperates with the safety belt is provided on the suspension belt 15.

[0060] The aforementioned closed ring 16 is used to engage with the hook on the safety belt, and the sleeve is connected in series with the wire rope, allowing the sleeve to slide on the wire rope.

[0061] A method for installing a sliding seatbelt suspension system for maintenance of a ladle car, specifically including the following steps;

[0062] Step 1: Matrix Pretreatment

[0063] Grind the steel ladle car belt welding area to Sa2.5 cleanliness level, locate the load-bearing column installation point and bolt or weld it, with verticality error ≤1‰, where the load-bearing column is a steel structure;

[0064] Step 2: Welding of diagonal braces

[0065] Located 600mm from the bottom of the channel steel (i.e., the top surface of the ladle car). Configuration: 40×40×4mm angle steel, welded to the channel steel at a 45° angle to form a stable triangular structure. J422 welding rods are used. Spot welding is performed first for positioning, followed by full welding. The weld height is 6mm. After cooling, epoxy zinc-rich primer is applied for rust prevention.

[0066] Step 3: Assembly of the horizontal safety rope system

[0067] Connect the wire rope to the turnbuckle, and connect the turnbuckle to the shackle. The shackle is U-shaped and is connected to the positioning end by bolts / nuts.

[0068] Step 4: Assemble the horizontal safety rope system and the load-bearing column.

[0069] Through holes are set on the load-bearing column, and the through holes are set on different end faces of the load-bearing column to realize horizontal and vertical installation. The positioning end connected by the two ends of the steel wire rope is connected to the different through holes on the load-bearing column.

[0070] The positioning end of the steel wire rope connection in the horizontal direction is inserted into the load-bearing column. The positioning hole on the positioning end overlaps with the through hole and is locked and fixed by bolts / nuts. The positioning end is coaxial with the load-bearing column.

[0071] The positioning end of the steel wire rope connection in the longitudinal direction is clamped onto the load-bearing column through the groove, wherein the positioning hole on the positioning end overlaps with the through hole and is locked and fixed by bolts / nuts;

[0072] The above-mentioned structure, which is surrounded by the working horizontal safety rope system in both the horizontal and vertical directions, facilitates the sliding suspension of the safety belt through the working horizontal safety rope system.

[0073] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0074] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A sliding seatbelt suspension system for maintenance of a ladle car, comprising a ladle car (1), characterized in that: It also includes a seatbelt suspension device (2) installed on the ladle car (1). The seat belt suspension device (2) includes a load-bearing column (3) that is fixed to the edge of the steel ladle car (1) by welding. The load-bearing column (3) forms an open space above the steel ladle car (1) along the horizontal and vertical directions, and the height of the load-bearing column (3) along the vertical direction is the same as the horizontal height. The safety belt suspension device (2) also includes a working horizontal safety rope system (4) installed on the load-bearing column (3), on which a safety belt (5) is detachably connected, and the safety belt (5) can slide along the working horizontal safety rope system (4).

2. The sliding seat belt suspension system for ladle car maintenance according to claim 1, characterized in that: The load-bearing columns (3) are symmetrically arranged in the transverse direction of the ladle car (1), and the load-bearing columns (3) are symmetrically arranged in the longitudinal direction of the ladle car (1).

3. The sliding seat belt suspension system for ladle car maintenance according to claim 2, characterized in that: The load-bearing column (3) is made of Q235B hot-rolled channel steel. The load-bearing column (3) is 2000±10mm high. The load-bearing column (3) is welded to the two sides of the steel ladle car (1) at a distance of ≥300mm from the end of the car body. A through hole is opened at the top of the load-bearing column (3). The hole opening is chamfered at R2mm and polished to Ra≤3.2μm.

4. The sliding seat belt suspension system for ladle car maintenance according to claim 3, characterized in that: The working horizontal safety rope system (4) includes a steel wire rope (6), which is a Φ10mm galvanized steel wire rope with a breaking strength ≥54kN; The two ends of the wire rope (6) are detachably connected to the through holes on the load-bearing column (3).

5. The sliding seat belt suspension system for ladle car maintenance according to claim 4, characterized in that: The steel wire rope (6) is fixed at both ends by three YT-10 type steel wire rope clamps (7) with a spacing of 60mm. The steel wire rope clamps (7) are U-shaped. The bolts press the short side end of the steel wire rope (6). The two ends of the steel wire rope (6) are connected to turnbuckles (8). The other end of the turnbuckles (8) is detachably connected to a shackle (9). The shackle (9) is detachably connected to the positioning end (10). The positioning end (10) is detachably connected to the through hole (11) opened at the top of the load-bearing column (3). The positioning end (10) is U-shaped and is fixed to the through hole by bolts / nuts.

6. The sliding seat belt suspension system for ladle car maintenance according to claim 5, characterized in that: The shackle (9) is a U-shaped buckle structure. The shackle (9) is detachably connected to the through hole (12) on the positioning end (10). The detachable connection is a bolt connection. A through channel is provided on the shackle (9) and it is fixed by bolts / nuts.

7. The sliding seat belt suspension system for ladle car maintenance according to claim 6, characterized in that: The through holes (11) on the load-bearing column (3) in the horizontal and vertical directions are arranged at intervals, and the distance between the through holes (11) is greater than the width of the positioning end (10), and the distance between adjacent through holes does not exceed twice the width of the shackle.

8. The sliding seat belt suspension system for ladle car maintenance according to claim 7, characterized in that: The wire rope (6) is pre-tightened by the turnbuckle (8) to a sag of ≤1% of the span, and the tension of the wire rope (6) maintains an elastic deformation of ≤0.1% and an increase in sag of ≤5mm.

9. The sliding seat belt suspension system for ladle car maintenance according to claim 8, characterized in that: The wire rope (6) is slidably provided with a hanging point (13), the hanging point (13) includes a sleeve (14), the sleeve (14) is U-shaped, a suspension belt (15) is fixedly provided on the sleeve (14), and a closed ring (16) that cooperates with the safety belt is provided on the suspension belt (15).

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