A tin bath bottom brick hoisting tool

Abstract

This invention discloses a hoisting tool for bottom bricks in a tin bath, comprising a hanger, a crossbeam, a lifting rod, and locking components. The hanger is fixed to the upper center of the crossbeam, and a cone-shaped truncated rod is connected to the lower part of the lifting rod. The locking components are movably fitted onto the lifting rod. A fastener is provided in the middle of the crossbeam, and the fastener includes a wheel seat. A support wheel is rotatably connected to the wheel seat, and a movable rod is connected to the lower part of the wheel seat via a spring. A pressure plate is provided at the lower end of the movable rod. A steel wire rope is provided between the two lifting rods, with both ends of the steel wire rope connected to the two lifting rods respectively and passing around the support wheel. When the two locking components are engaged with the bottom brick, the steel wire rope is stressed, resulting in symmetrical load-bearing on the two lifting rods. At the same time, the fastener presses the pressure plate against the upper part of the bottom brick. This invention achieves balanced force on both sides during hoisting, effectively preventing the brick from falling off during hoisting and damaging the countersunk hole of the bottom brick, and ensuring a stable hoisting posture. It can adapt to bottom bricks of different specifications, shortening the installation and adjustment time and improving construction efficiency. The claws automatically open after unloading, reducing the intensity of manual operation.

Description

Technical Field

[0001] This invention relates to the field of hoisting tools, specifically a hoisting tool for tin bath bottom bricks. Background Technology

[0002] The tin bath is a core thermal equipment in the float glass production line. The refractory bricks at its bottom directly contact the high-temperature molten tin, having a decisive impact on the glass forming quality and the service life of the tin bath. During the construction, maintenance, or replacement of the tin bath's bottom bricks, it is necessary to precisely hoist these heavy and brittle bricks to their designated positions. Due to the confined space inside the tin bath, the high operating temperature, and the fact that the bottom bricks themselves are made of fragile refractory materials, extremely high requirements are placed on the safety, stability, and adaptability of the hoisting tools.

[0003] Existing tools for lifting bottom bricks in tin baths mostly use simple hooks, clamps, or rigid lifting beams. In practical applications, the following technical problems are common: If the existing lifting tools encounter vibration, tilting, or shift of the bottom brick's center of gravity during lifting, moving, or lowering, the clamps are very likely to loosen or the bottom brick may slip. This may not only cause the bottom brick to break and be scrapped, but may also cause safety accidents such as injuring people or damaging the lining of the tin bath. Patent CN209797239U discloses a special lifting device for rapid hoisting of bottom bricks in a float glass production line's tin bath. The device includes a main crossbeam assembly, two lifting rod assemblies, and two locking components; each lifting rod assembly is paired with a locking component. The main crossbeam assembly includes a round steel hook, a load-bearing steel plate, and a partition steel plate. The lifting rod assembly includes a short lifting rod, a U-shaped round steel hook I, an iron chain, a U-shaped round steel hook II, a long lifting rod, and a conical platform. The locking components include an actuator rod, a locking jaw disc, and locking jaws. However, this device cannot automatically balance the load distribution on both sides of the lifting points. When there is a machining error in the bottom brick hole position or a slight deviation in the hoisting posture, the lifting rod on one side bears excessive tension, easily causing localized stress concentration and cracking of the bottom brick. Simultaneously, the lack of buffer protection between the metal lifting device and the brittle bottom brick means that direct contact can easily crush the brick surface or wear down the edges of the countersunk holes. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a tool for lifting bottom bricks in tin baths. This tool achieves balanced force on both sides during lifting, effectively prevents falling off during lifting and damage to the countersunk holes of the bottom bricks, and ensures stable lifting posture. It can adapt to bottom bricks of different specifications, shorten the installation and adjustment time, and improve construction efficiency. It also enables the jaws to open automatically after unloading, reducing the intensity of manual operation and effectively solving the problems in the background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tool for hoisting bottom bricks in a tin bath, comprising a hanger, a crossbeam, two lifting rods, and two locking components; the hanger is fixed to the upper center of the crossbeam, the lifting rods pass through a long slot on the crossbeam, a truncated cone is connected to the lower part of the lifting rods, and the locking components are movably sleeved on the lifting rods; the locking components include a movable sleeve and claws, the movable sleeve is adapted to the lifting rods, and multiple claws are evenly hinged along the circumferential direction on the movable sleeve; The crossbeam has a fastener in the middle, which includes a wheel seat. The wheel seat is rotatably connected to a support wheel. A movable rod is connected to the bottom of the wheel seat by a spring. The movable rod passes through a through hole on the crossbeam and has a pressure plate at its lower end. A steel wire rope is provided between the two lifting rods. The two ends of the steel wire rope are respectively connected to the two lifting rods and pass around the support wheel. When the two locking parts are engaged with the bottom brick, the steel wire rope is stressed and the two lifting rods bear the load symmetrically. At the same time, the steel wire rope presses down on the fastener so that the pressure plate is pressed tightly against the top of the bottom brick.

[0006] Preferably, the crossbeam is further provided with two positioning components, each including a sleeve and two sliding rods. The lifting rod is adapted to the sleeve, the two sliding rods are coaxial and perpendicular to the axis of the sleeve, and the two opposite side plates of the crossbeam are provided with transverse grooves for the corresponding sliding rods to slide.

[0007] Preferably, the boom has a through hole for the wire rope to pass through, and one end of the wire rope is fixed with a rope buckle after passing through the through hole.

[0008] Preferably, the cone is threadedly connected to the boom, the axis of the cone has a threaded hole, the upper end of the cone has a groove coaxial with the threaded hole, and the boom is also fitted with a return spring, which is located in the groove and abuts against the movable sleeve of the locking member.

[0009] Preferably, the movable rod is threadedly connected to a sleeve, and the sleeve is fixedly connected to the pressure plate.

[0010] Preferably, the lower surface of the pressure plate is provided with an anti-slip buffer pad, which is made of asbestos and is fixed to the pressure plate by countersunk screws.

[0011] Preferably, the two side plates of the hanger are welded to the crossbeam, the upper part of the hanger is provided with lifting lugs, and the wheel seats of the fasteners and the support wheels are located between the two side plates of the hanger.

[0012] Preferably, the claw is connected to the movable sleeve by a pin, and the end of the claw has a conical surface that matches the countersunk hole of the bottom brick.

[0013] Compared with the prior art, the beneficial effects of the present invention are: 1. Through the cooperation of wire rope, support wheel and pressure plate, automatic locking and force balance are achieved during the hoisting process. When the locking part is locked into the bottom brick countersink, the wire rope is tensioned with the hoisting action. On the one hand, the structure that bypasses the support wheel ensures that the two lifting rods are subjected to symmetrical force, avoiding excessive force on one side and damage to the bottom brick countersink, thus ensuring the stability of the bottom brick in the air. On the other hand, the wire rope presses down on the fastener, driving the pressure plate to press down on the upper surface of the bottom brick, realizing automatic locking and double force protection, and improving hoisting safety. 2. A positioning component consisting of a sleeve and a sliding rod is installed on the crossbeam. The sliding rod can slide and adjust within the cross groove of the crossbeam, allowing the lifting tool to adapt to bottom bricks with different hole spacing specifications. At the same time, it ensures that the lifting rod can only move vertically, avoiding the force deviation of the lifting rod when lifting. 3. The cone and the lifting rod are connected by threads and have an internal return spring. After the bottom brick is removed, the return spring can push the movable sleeve of the locking part to return to its original position, so that the chuck automatically opens and disengages from the bottom brick countersunk hole. There is no need to manually pry open the chuck, which reduces the labor intensity of workers and avoids deformation or damage to the chuck due to frequent manual operation, thus extending the service life of the tool. In summary, this invention achieves automatic force balance on both sides during lifting and longitudinal pressing of the bottom brick by the pressure plate, resulting in balanced force, effectively preventing detachment during lifting and damage to the bottom brick's countersunk hole, and ensuring stable lifting posture; it can adapt to bottom bricks of different specifications, shortening installation and adjustment time and improving construction efficiency; it enables the claws to automatically open after unloading, reducing the intensity of manual operation; and the overall welded structure has high strength. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is an enlarged schematic diagram of the structure at point A of the present invention.

[0015] In the diagram: 1. Hanger, 1.1 Lifting lug, 2. Crossbeam, 2.1 Long slot, 2.2 Horizontal slot, 3. Lifting rod, 4. Locking component, 4.1 Movable sleeve, 4.2 Claw, 5. Conical truss, 6. Wire rope, 6.1, 7. Positioning component, 7.1 Slide rod, 7.2 Sleeve, 8. Fastener, 8.1 Support wheel, 8.2 Wheel seat, 8.3 Spring, 8.4 Movable rod, 8.5 Sleeve, 8.6 Pressure plate. Detailed Implementation

[0016] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation.

[0017] Please see Figures 1-4 The present invention provides the following technical solutions: Example 1: A tool for lifting bottom bricks in a tin bath includes a hanger 1, a crossbeam 2, two lifting rods 3, and two locking components 4. The hanger 1 is fixed to the upper center of the crossbeam 2. The lifting rods 2 pass through a long groove 2.1 on the crossbeam 2. A frustum 5 is connected to the lower part of the lifting rods 2. The locking components 4 are movably sleeved on the lifting rods 2. The locking components 4 include a movable sleeve 4.1 and a claw 4.2. The movable sleeve 4.1 is adapted to the lifting rods 3. Multiple claws 4.2 are evenly hinged to the movable sleeve 4.1 along the circumferential direction. The claws 4.2 are connected to the movable sleeve 4.1 by a pin. The end of the claw 4.2 has a conical surface adapted to the frustum-shaped countersunk hole of the bottom brick. A fastener 8 is provided in the middle of the crossbeam 2. The fastener 8 includes a wheel seat 8.2, which is rotatably connected to a support wheel 8.1. A movable rod 8.4 is connected to the bottom of the wheel seat 8.2 via a spring 8.3. The movable rod 8.4 passes through a through hole on the crossbeam 2 and has a pressure plate 8.6 at its lower end. A wire rope 6 is provided between the two lifting rods 3. The two ends of the wire rope 6 are respectively connected to the two lifting rods 3 and pass around the support wheel 8.1. When the two locking parts 4 are engaged with the bottom brick, the wire rope 6 is stressed and the two lifting rods 3 bear the load symmetrically. At the same time, the wire rope 6 presses down on the fastener 8, causing the pressure plate 8.6 to press tightly against the upper part of the bottom brick. Understandably, the automatic locking and force balance during hoisting are achieved through the coordinated operation of the wire rope 6, support wheel 8.1, and pressure plate 8.6. When the locking component 4 is engaged in the bottom brick's countersunk hole, the wire rope 6 is tensioned as the hoisting action begins. On one hand, the wire rope 6 passes around the support wheel 8.1 to ensure symmetrical force on the two lifting rods 3, preventing excessive force on one side from damaging the bottom brick's countersunk hole and ensuring the bottom brick's stable posture in the air. On the other hand, the wire rope 6 presses down on the fastener 8, driving the pressure plate 8.6 to press down on the top of the bottom brick, preventing the bottom brick from falling off during hoisting and significantly improving operational safety.

[0018] Example 2: Unlike Example 1, the crossbeam 2 is also provided with two positioning components 7. The positioning component 7 includes a sleeve 7.2 and two sliding rods 7.1. The lifting rod 3 is adapted to the sleeve 7.2. The two sliding rods 7.1 are coaxial and perpendicular to the axis of the sleeve 7.2. Both opposite side plates of the crossbeam 2 are provided with transverse grooves 2.2 for the corresponding sliding rods 7.1 to slide. The sliding rods 7.1 can slide and adjust within the transverse grooves 2.2 of the crossbeam 2, so that the lifting tool can adapt to the bottom bricks with different hole spacing specifications, or adjust the spacing of the lifting rods 3 before placing the bottom bricks. The lifting rod 3 is adapted to the sleeve 7.2 to ensure that the lifting rod 3 can only be raised and lowered vertically, avoiding the force deviation of the lifting rod 3 when it is lifted.

[0019] Example 3: Unlike Example 1, the boom 2 has a through hole for the wire rope 6 to pass through. One end of the wire rope 6 passes through the through hole and is fixed with a rope buckle, making the connection more secure and less prone to slippage.

[0020] Example 4: Unlike Example 1, the cone 5 is threadedly connected to the boom 3. The axis of the cone 5 is provided with a threaded hole, and the threaded connection facilitates disassembly and replacement. The upper end of the cone 5 is provided with a groove coaxial with the threaded hole. The boom 3 is also fitted with a return spring. The return spring is located in the groove and corresponds to and abuts against the movable sleeve 4.1 of the locking part 4. After the bottom brick is removed and the wire rope is loosened, the locking part 4 can automatically reset through the return spring, without the need for manual operation by workers, thus reducing labor intensity.

[0021] Example 5: Unlike Example 1, the movable rod 8.4 is threadedly connected to a sleeve 8.5, which is fixedly connected to the pressure plate 8.6. The height of the pressure plate 8.6 relative to the bottom brick can be adjusted by rotating the sleeve 8.5. The lower surface of the pressure plate 8.6 is provided with an anti-slip buffer pad, which is made of asbestos and is fixed to the pressure plate 8.6 by countersunk screws. This not only prevents the pressure plate 8.6 from directly crushing the bottom brick of the tin bath, but also provides a large coefficient of friction to prevent slippage.

[0022] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to encompass all changes falling within the meaning and scope of equivalents in the content of this invention.

Claims

1. A tool for hoisting bottom bricks in a tin bath, characterized in that: The device includes a hanger (1), a crossbeam (2), two rods (3), and two locking components (4). The hanger (1) is fixed to the upper center of the crossbeam (2). The rods (2) pass through a long slot (2.1) on the crossbeam (2). A cone (5) is connected to the lower part of the rods (2). The locking components (4) are movably sleeved on the rods (2). The locking components (4) include a movable sleeve (4.1) and a claw (4.2). The movable sleeve (4.1) is adapted to the rods (3). The movable sleeve (4.1) is evenly hinged with multiple claws (4.2) along the circumferential direction. The crossbeam (2) is provided with a fastener (8) in the middle. The fastener (8) includes a wheel seat (8.2). The wheel seat (8.2) is rotatably connected to a support wheel (8.1). The wheel seat (8.2) is connected to a movable rod (8.4) by a spring (8.3) below it. The movable rod (8.4) passes through a through hole on the crossbeam (2) and has a pressure plate (8.6) at its lower end. A wire rope (6) is provided between the two rods (3). The two ends of the wire rope (6) are respectively connected to the two rods (3) and pass around the support wheel (8.1). When the two locking parts (4) are engaged with the bottom brick, the wire rope (6) is stressed and the two rods (3) bear the load symmetrically. At the same time, the wire rope (6) presses down on the fastener (8) so that the pressure plate (8.6) is pressed on the upper part of the bottom brick.

2. The tool for lifting tin bath bottom bricks according to claim 1, characterized in that: The crossbeam (2) is also provided with two positioning components (7). The positioning component (7) includes a sleeve (7.2) and two sliding rods (7.1). The hanging rod (3) is adapted to the sleeve (7.2). The two sliding rods (7.1) are coaxial and perpendicular to the axis of the sleeve (7.2). The two opposite side plates of the crossbeam (2) are provided with transverse grooves (2.2) for the corresponding sliding rods (7.1) to slide.

3. The tool for lifting tin bath bottom bricks according to claim 1, characterized in that: The boom (2) has a through hole for the wire rope (6) to pass through, and one end of the wire rope (6) is fixed with a rope buckle after passing through the through hole.

4. The tool for lifting bottom bricks of a tin bath according to claim 1, characterized in that: The cone (5) is threadedly connected to the rod (3). The axis of the cone (5) is provided with a threaded hole. The upper end of the cone (5) is provided with a groove coaxial with the threaded hole. The rod (3) is also sleeved with a return spring. The return spring is located in the groove and abuts against the movable sleeve (4.1) of the locking part (4).

5. The tool for lifting tin bath bottom bricks according to claim 1, characterized in that: The movable rod (8.4) is threadedly connected to a sleeve (8.5), and the sleeve (8.5) is fixedly connected to the pressure plate (8.6).

6. The tool for lifting bottom bricks of a tin bath according to claim 5, characterized in that: The lower surface of the pressure plate (8.6) is provided with an anti-slip buffer pad, which is made of asbestos and is fixed to the pressure plate (8.6) by countersunk screws.

7. The tool for lifting tin bath bottom bricks according to claim 1, characterized in that: The two side plates of the hanger (1) are welded to the crossbeam (2). The upper part of the hanger (1) is provided with a lifting lug (1.1). The wheel seat (8.2) of the fastener (8) and the support wheel (8.1) are located between the two side plates of the hanger (1).

8. The tool for lifting tin bath bottom bricks according to claim 1, characterized in that: The claw (4.2) is connected to the movable sleeve (4.1) by a pin, and the end of the claw (4.2) has a conical surface that matches the countersunk hole of the bottom brick.

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