Lifting appliance for metal casting

Abstract

The utility model relates to the technical field of metal casting, in particular to a lifting appliance for metal casting, which is provided with a hinged oil cylinder mechanism, is used for overturning two groups of arms, is matched with a selected special lifting appliance, stably lifts corresponding castings and improves the practicability. Comprising a T-shaped frame, first hinged frames, first hinged shafts, first hinged blocks, movable arms, second hinged frames, second hinged shafts, second hinged blocks, oil cylinders, telescopic rods and clamping jaws, the left side and the right side of the lower portion of the T-shaped frame are connected with the inner ends of the first hinged frames respectively, and the inner sides of the first hinged frames are movably connected with the middles of the outer sides of the first hinged blocks through the first hinged shafts respectively; the outer sides of the two first hinge blocks are connected with the middles of the inner sides of the movable arms respectively, the inner sides of the second hinge frames are movably connected with the middles of the outer sides of the second hinge blocks through second hinge shafts, the output ends of the oil cylinders are slidably connected with the inner sides of the telescopic rods, and the two oil cylinders and the telescopic rods are connected to the two second hinge blocks on the two sides respectively. The lower portion of the inner side of each movable arm is provided with a clamping jaw through an installation mechanism.

Description

Technical Field

[0001] This utility model relates to the technical field of metal casting, specifically to a lifting tool for metal casting. Background Technology

[0002] Metal casting is a process in which metal is melted into a liquid that meets certain requirements, poured into a mold, cooled and solidified, and then cleaned to obtain a casting with a predetermined shape, size, and properties. Because the cast blank is nearly complete, it eliminates or minimizes machining, reducing costs and time to some extent. Casting is one of the fundamental processes in modern machinery manufacturing.

[0003] In the metal casting process, lifting equipment is required for lifting operations. One existing lifting equipment for metal casting, such as the one described in patent publication number CN221420419U, uses lifting lugs to lift the clamping body, causing the upper ends of two connecting arms to rise. This rise then lifts the upper ends of the two clamping arms, which in turn clamp the load at the lower clamping parts. By detachably installing widened structures on both sides and inner side plates on the clamping parts, it can accommodate loads of different sizes and shapes, reducing the need for changing lifting equipment and improving the efficiency of metal casting lifting equipment. The inclusion of a buffer plate provides excellent cushioning when gripping items, preventing damage during the clamping process.

[0004] However, its complex structure and unstable force application result in poor hoisting effect and insufficient practicality. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a metal casting lifting tool that features a hinged hydraulic cylinder mechanism for rotating two sets of arms, and is used in conjunction with a specially selected lifting tool to stably lift corresponding castings, thereby improving its practicality.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a lifting device for metal casting, comprising a T-frame, a first hinge frame, a first hinge shaft, a first hinge block, a movable arm, a second hinge frame, a second hinge shaft, a second hinge block, a hydraulic cylinder, a telescopic rod, and grippers. The lower left and right sides of the T-frame are respectively connected to the inner ends of a set of first hinge frames. The inner side of each set of first hinge frames is movably connected to the outer middle of a set of first hinge blocks via a set of first hinge shafts. The outer sides of the two sets of first hinge blocks are respectively connected to the inner middle of a set of movable arms. The upper inner sides of the two sets of movable arms are respectively connected to the upper left and right sides of the T-frame with a set of second hinge frames. The inner side of the second hinge frames is movably connected to the outer middle of the second hinge blocks via a second hinge shaft. The output end of the hydraulic cylinder is slidably connected to the inner side of the telescopic rod. The two sets of hydraulic cylinders and the telescopic rod are respectively connected to the two sets of second hinge blocks on both sides. The lower inner side of each set of movable arms is respectively equipped with a set of grippers via an installation mechanism.

[0009] Preferably, the installation mechanism includes a sleeve, a mounting block, mounting bolts, and nuts. The lower inner part of each set of movable arms is connected to the outer side of a set of sleeves, and the middle outer side of each set of grippers is connected to a set of mounting blocks. The mounting blocks are detachably installed inside the sleeve. The mounting bolts pass through the sleeve and the mounting blocks simultaneously and are screwed onto the protruding side.

[0010] Preferably, it also includes anti-loosening washers, and anti-loosening washers are provided on the inner side of the mounting bolts and nuts.

[0011] Preferably, it also includes a nameplate, with the lower outer side of each set of grippers connected to the inner side of a set of nameplates.

[0012] Preferably, it also includes a pull-wire encoder and a connecting wire. A set of pull-wire encoders is connected to the middle of the left and right sides of the T-frame, and the input end of the pull-wire encoder is movably connected to the connecting wire. The other end of the connecting wire is connected to the lower part of the hinge frame two inside the corresponding movable arm, and the output end of the pull-wire encoder is communicatively connected to the control system.

[0013] Preferably, it also includes an oil inlet and an oil inlet cap. The upper outer side of each set of oil cylinders is connected to the inner side of a set of oil inlets, and an oil inlet cap is detachably installed on the outer side of the oil inlet.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a lifting tool for metal casting, which has the following advantages:

[0016] Select appropriate grippers according to requirements, and install and fix them on the underside of the movable arm via the installation mechanism. During use, both sets of telescopic rods are in a retracted state within the hydraulic cylinders, and the two sets of grippers move away. The entire structure is moved to the corresponding position via the T-frame connection. Then, the two sets of hydraulic cylinders act on the corresponding telescopic rods to extend. The hinge blocks are constrained by the hinge shafts within the two sets of hinge frames, causing the hydraulic cylinders and telescopic rods to rotate accordingly. This drives the movable arm to move within the hinge frame, connected by the hinge block and constrained by the hinge shaft. The undersides of the two movable arms move inward, allowing the two sets of grippers to approach and clamp the casting. The hydraulic cylinder mechanism is set up to rotate the two sets of arms. With the use of the selected special lifting tools, the corresponding castings are stably lifted, improving practicality. Attached Figure Description

[0017] Figure 1 This is an axial view illustrating the structure of this utility model.

[0018] Figure 2 This utility model Figure 1 Front view;

[0019] Figure 3 This utility model Figure 1 A magnified view;

[0020] Figure 4 This utility model Figure 2 A magnified view of B.

[0021] The following are labels in the attached diagram: 1. T-frame; 2. Hinge frame one; 3. Hinge shaft one; 4. Hinge block one; 5. Movable arm; 6. Hinge frame two; 7. Hinge shaft two; 8. Hinge block two; 9. Hydraulic cylinder; 10. Telescopic rod; 11. Sleeve; 12. Mounting block; 13. Gripper; 14. Mounting bolt; 15. Nut; 16. Cable encoder; 17. Connecting wire; 18. Nameplate; 19. Anti-loosening washer; 20. Oil filler nozzle; 21. Oil filler cap. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example

[0024] Please see Figure 1-4A metal casting lifting device includes a T-frame 1, a hinge frame 2, a hinge shaft 3, a hinge block 4, a movable arm 5, a second hinge frame 6, a second hinge shaft 7, a second hinge block 8, a hydraulic cylinder 9, a telescopic rod 10, and a gripper 13. The lower left and right sides of the T-frame 1 are respectively connected to the inner ends of a set of hinge frames 2. The inner side of each set of hinge frames 2 is movably connected to the outer middle of a set of hinge blocks 4 via a set of hinge shafts 3. The outer sides of the two sets of hinge blocks 4 are respectively connected to the inner middle of a set of movable arms 5. The upper inner sides of the two sets of movable arms 5 are respectively connected to the upper left and right sides of the T-frame 1 with a set of second hinge frames 6. The inner side of the second hinge frame 6 is movably connected to the outer middle of the second hinge block 8 via a second hinge shaft 7. The output end of the hydraulic cylinder 9 is slidably connected to the inner side of the telescopic rod 10. The two sets of hydraulic cylinders 9 and the telescopic rod 10 are connected together. The two sets of hinge blocks 8 are connected to each other on both sides. Each set of movable arms 5 has a set of grippers 13 installed on the lower inner side via an installation mechanism. Select the appropriate grippers 13 according to the requirements and install and fix them on the lower side of the movable arm 5 via the installation mechanism. In use, both sets of telescopic rods 10 are in the retracted state in the hydraulic cylinder 9. The two sets of grippers 13 are far apart and moved to the corresponding position by the T-frame 1. Then, the two sets of hydraulic cylinders 9 act on the corresponding telescopic rods 10 to extend. The hinge blocks 8 are constrained by the hinge shafts 7 in the two sets of hinge frames 26, so that the hydraulic cylinders 9 and telescopic rods 10 are rotated accordingly. This causes the movable arm 5 to move in the hinge frame 2 via the hinge block 14 and the constraint of the hinge shaft 13. This causes the lower side of the two sets of movable arms 5 to move inward and be brought closer by the two sets of grippers 13 to clamp the casting.

[0025] The mounting mechanism includes a sleeve 11, a mounting block 12, mounting bolts 14, and nuts 15. The lower inner part of each set of movable arms 5 is connected to the outer side of a set of sleeves 11. The middle outer side of each set of grippers 13 is connected to a set of mounting blocks 12. The mounting blocks 12 are detachably installed inside the sleeve 11. The mounting bolts 14 pass through the sleeve 11 and the mounting blocks 12 simultaneously and are screwed on the protruding side. A suitable gripper 13 is selected, and the mounting block 12 of the gripper 13 is inserted into the sleeve 11. The mounting bolts 14 pass through the sleeve 11 and the mounting blocks 12 simultaneously and are screwed on the protruding side, thus forming the connection and fixation of the gripper 13 on the lower side of the movable arm 5.

[0026] It also includes anti-loosening washers 19. Anti-loosening washers 19 are provided on the inner side of the mounting bolts 14 and nuts 15. The anti-loosening washers 19 can push outward after the mounting bolts 14 and nuts 15 are screwed on, so as to prevent the screws from loosening and improve stability.

[0027] It also includes a nameplate 18, with the lower outer side of each set of grippers 13 connected to the inner side of a nameplate 18; the nameplate 18 can display the information of the gripper 13, making it easier to read and use, and improving convenience.

[0028] It also includes a pull-wire encoder 16 and a connecting line 17. A set of pull-wire encoders 16 is connected to the middle of the left and right sides of the T-frame 1, and the input end of the pull-wire encoder 16 is movably connected to the connecting line 17. The other end of the connecting line 17 is connected to the lower part of the hinge frame 6 inside the corresponding movable arm 5. The output end of the pull-wire encoder 16 is communicatively connected to the control system. The pull-wire encoder 16 is preferably a KMT oil nozzle 200. When the movable arm 5 rotates, it can act on the pull-wire encoder 16 through the connecting line 17, and the pull-wire encoder 16 outputs a signal to the control system for precise control.

[0029] It also includes an oil inlet 20 and an oil inlet cap 21. The upper outer side of each set of oil cylinders 9 is connected to the inner side of an oil inlet 20. An oil inlet cap 21 is detachably installed on the outer side of the oil inlet 20. Oil can be injected into the inner wall of the oil cylinder 9 through the oil inlet 20 for convenient lubrication and maintenance. When not in use, the oil inlet cap 21 can be closed on the outer side of the oil inlet 20 for protection.

[0030] In summary, when using a metal casting lifting device, according to the information displayed on the nameplate 18, a suitable gripper 13 is selected, and the mounting block 12 of the gripper 13 is inserted into the sleeve 11. The mounting bolt 14 passes through the sleeve 11 and the mounting block 12 simultaneously, and is screwed on the protruding side by the mounting bolt 14, forming a connection and fixation of the gripper 13 on the lower side of the movable arm 5. The anti-loosening washer 19 can provide outward support after the mounting bolt 14 and nut 15 are screwed on, preventing the screw from loosening. During use, both sets of telescopic rods 10 are in the retracted state in the hydraulic cylinder 9, and the two sets of grippers 13 are moved away. The overall structure is moved to the corresponding position through the T-frame 1, and then the two sets of hydraulic cylinders 9 act on the corresponding telescopic rods 10 to extend. The hinge shaft 7 within the hinge frame 26 constrains the hinge block 28, causing the cylinder 9 and telescopic rod 10 to rotate accordingly. This drives the movable arm 5 to move within the hinge frame 2 under the constraint of the hinge shaft 3, connected by the hinge block 14. This causes the lower sides of the two sets of movable arms 5 to face inward, allowing the two sets of grippers 13 to approach and clamp the casting. The wire encoder 16 is preferably a KMT oil injection nozzle 200. When the movable arm 5 rotates, it can act on the wire encoder 16 through the connecting line 17, and the wire encoder 16 outputs a signal to the control system for precise control. In addition, the oil injection nozzle 20 can inject oil into the inner wall of the cylinder 9 for convenient lubrication and maintenance. When not in use, the oil injection cap 21 can be closed on the outside of the oil injection nozzle 20 for protection.

[0031] The hydraulic cylinder 9 and the wire encoder 16 are commercially available devices known to those skilled in the art. We are simply using them here without making any structural or functional improvements, and we will not elaborate further on them here.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lifting device for metal casting, characterized in that, The system includes a T-shaped frame (1), a first hinge frame (2), a first hinge shaft (3), a first hinge block (4), a movable arm (5), a second hinge frame (6), a second hinge shaft (7), a second hinge block (8), a hydraulic cylinder (9), a telescopic rod (10), and a gripper (13). The lower left and right sides of the T-shaped frame (1) are respectively connected to the inner ends of a set of first hinge frames (2). The inner side of each set of first hinge frames (2) is movably connected to the middle of the outer side of a set of first hinge blocks (4) via a set of first hinge shafts (3). The outer sides of the two sets of first hinge blocks (4) are respectively connected to a set of first hinge blocks (4). The inner middle of the movable arm (5) is connected. The upper inner part of the two movable arms (5) is connected to the upper left and right sides of the T-frame (1) by a set of hinge frame two (6). The inner side of the hinge frame two (6) is movably connected to the middle outer side of the hinge block two (8) via the hinge shaft two (7). The output end of the oil cylinder (9) is slidably connected to the inner side of the telescopic rod (10). The two sets of oil cylinders (9) and telescopic rods (10) are respectively connected to the two sets of hinge blocks two (8) on both sides. The lower inner part of each movable arm (5) is equipped with a set of grippers (13) via the installation mechanism.

2. The lifting device for metal casting according to claim 1, characterized in that: The installation mechanism includes a sleeve (11), an installation block (12), an installation bolt (14), and a nut (15). The lower inner part of each set of movable arms (5) is connected to the outer side of a set of sleeves (11). The middle outer side of each set of grippers (13) is connected to a set of installation blocks (12). The installation blocks (12) are detachably installed inside the sleeve (11). The installation bolts (14) pass through the sleeve (11) and the installation blocks (12) simultaneously and are screwed on the protruding side by the installation bolts (14).

3. A lifting device for metal casting according to claim 2, characterized in that: It also includes anti-loosening washers (19), and anti-loosening washers (19) are provided on the inner side of the mounting bolts (14) and nuts (15).

4. A lifting device for metal casting according to claim 1, characterized in that: It also includes nameplates (18), with the lower outer side of each set of grippers (13) connected to the inner side of a set of nameplates (18).

5. A lifting device for metal casting according to claim 1, characterized in that: It also includes a pull-wire encoder (16) and a connecting line (17). A set of pull-wire encoders (16) are connected to the middle of the left and right sides of the T-frame (1). The input end of the pull-wire encoder (16) is movably connected to the connecting line (17). The other side of the connecting line (17) is connected to the lower part of the hinge frame (6) inside the corresponding movable arm (5). The output end of the pull-wire encoder (16) is communicatively connected to the control system.

6. A lifting device for metal casting according to claim 1, characterized in that: It also includes an oil inlet (20) and an oil inlet cap (21). The upper outer side of each set of oil cylinders (9) is connected to the inner side of a set of oil inlets (20). An oil inlet cap (21) is detachably installed on the outer side of the oil inlet (20).

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