Hoisting tool
By designing a lifting tool with a gripper and screw hole, the problems of inconvenient operation and low efficiency of lifting tools in the prior art are solved, and more efficient and safe lifting operations are achieved.
Patent Information
- Application Number
- CN202421869198.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-04
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-04
AI Technical Summary
In the prior art, when lifting the blank out of the high-temperature heating furnace, the lifting tool is inconvenient to operate and inefficient, and the operator cannot directly observe the relative position of the lifting place of the hanging cage and the driving hook, resulting in difficulty in mounting.
A lifting tool is designed, including a vertical rod, a hook, a lifting ring and a gripping rod. The gripping rod is connected to the vertical rod through a screw hole, allowing the gripping rod to adjust the position of the hook at the bottom of the vertical rod to facilitate attachment, and the hook height is judged by the position of the gripping rod, which improves operation convenience.
This design improves the convenience and safety of lifting tools, reduces the risk of operators' contact with high temperatures, reduces operational difficulty and time, and improves lifting efficiency.
Smart Images
Figure CN222907268U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a forging field, in particular to a lifting tool. Background Art
[0002] When forging and heat-treating metal parts, the metal parts need to be placed in a heating furnace for heating. After heating to a predetermined temperature or time, a lifting tool is used to lift them out for forging or heat treatment.
[0003] In the prior art, for a heating furnace with an upper opening, generally, a blank to be processed is placed in a lifting cage adapted to the heating furnace. A lifting point is provided in the middle of the top surface of the lifting cage. After the hook of a crane is connected to the lifting point, the lifting cage is placed into the heating furnace or lifted out of the heating furnace. In this way, the hook of the crane is generally connected to the crane by a metal chain. When lifting the blank into the heating furnace, the connection between the hook and the lifting cage is relatively convenient, and the operation can be manually lifted. However, when the lifting cage needs to be lifted out of the heating furnace, the metal chain needs to extend into the high-temperature heating furnace. Then, when the hook wants to be connected to the lifting point of the lifting cage, it is very inconvenient. Therefore, the temperature at the furnace mouth of the heating furnace (heating furnace with a top opening structure) is particularly high, and the operator cannot stand at the furnace mouth to observe the relative position between the lifting point of the lifting cage and the hook of the crane. This also requires the hook of the crane to hook the lifting point of the lifting cage, and it needs to be judged manually from the metal chain outside the heating furnace and tried many times to hook the hook to the lifting cage, with low efficiency and inconvenient operation. Therefore, how to solve the above technical problems is the direction that those skilled in the art need to work hard on. Summary of the Invention
[0004] The purpose of the utility model is to provide a lifting tool, which improves the convenience and safety of lifting high-temperature blanks by using this structure, and also improves the scope of application.
[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a lifting tool, including a vertical rod, a hook provided at the bottom of the vertical rod, and a lifting ring provided at the top of the vertical rod. A grasping rod is also installed on the vertical rod, and the grasping rod is arranged close to the lifting ring;
[0006] At least one screw hole is provided above the outer surface of the vertical rod, and the screw hole is arranged close to the lifting ring. A screw is provided at the inner end of the grasping rod, and the grasping rod is connected to the screw hole by screwing the screw.
[0007] In the above technical solution, there are two screw holes, and the two screw holes are arranged at intervals up and down. The grasping rod is connected to one of the screw holes by screwing the screw.
[0008] In the above technical solution, the screw hole includes an upper screw hole and a lower screw hole. The axis of the upper screw hole is perpendicular to the axis of the vertical rod. The lower screw hole is inclined inward from top to bottom, and the included angle between the axis of the lower screw hole and the axis of the vertical rod is 45° to 75°.
[0009] In the above technical solution, the hook includes a vertical rod and an inclined rod. The top of the vertical rod is fixedly connected to the bottom of the vertical rod. The inner end of the inclined rod is connected to the bottom of the vertical rod, and the inclined rod is inclined upward from inside to outside.
[0010] In the above technical solution, the screw hole is arranged on the left outer surface of the vertical rod. The left end of the inclined rod is connected to the bottom of the vertical rod, and the right end of the inclined rod is arranged on the right side of the vertical rod. The inclined rod is inclined upward from left to right.
[0011] In the above technical solution, the vertical rod includes an upper vertical rod and a lower vertical rod. The lifting ring is installed at the top of the upper vertical rod. The screw hole is arranged on the outer surface of the upper vertical rod and is close to the lifting ring;
[0012] The hook is installed at the bottom of the lower vertical rod, and the upper vertical rod is detachably connected to the lower vertical rod.
[0013] In the above technical solution, a lower connecting screw rod is arranged coaxially at the bottom of the upper vertical rod, and a connecting screw hole that is screwed and matched with the lower connecting screw rod is arranged at the top of the lower vertical rod. The upper vertical rod is connected to the lower vertical rod through the lower connecting screw rod and the connecting screw hole.
[0014] In the above technical solution, the bottom surface of the upper vertical rod is in contact with the top surface of the lower vertical rod.
[0015] In the above technical solution, a grasping ring is arranged at the outer end of the grasping rod.
[0016] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:
[0017] 1. In the present utility model, a lifting ring is arranged at the top of the vertical rod for connecting with a hoisting device, and a hook at the bottom of the vertical rod is used for hanging a cage. One end of the grasping rod is connected to the screw hole of the vertical rod. Through the arrangement of the grasping rod, when hanging the cage in the heating furnace, grasping the grasping rod can conveniently adjust the position of the hook at the bottom of the vertical rod, thereby conveniently realizing the hanging connection between the hook and the cage;
[0018] 2. The existence of the grasping rod in the present utility model can also prevent the situation that the vertical rod falls into the heating furnace after being separated from the hoisting device;
[0019] 3. The provision of the gripping rod in the present utility model enables, after the vertical rod is inserted into the heating furnace, the most intuitive judgment of the height position of the hook through the position of the gripping rod, facilitating the connection between the hook and the lifting hook.
[0020] 4. Two screw holes are provided in the present utility model, and the angles of the screw holes can be perpendicular or inclined. In this way, the connection position between the gripping rod and the vertical rod can be selected according to different operating positions, improving the convenience of operation and the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 is a schematic structural view of Embodiment 1 of the present utility model;
[0022] Figure 2 is Figure 1 a three-dimensional structural view of;
[0023] Figure 3a is a schematic structural view of the lifting tool of Embodiment 1 of the present utility model inserted into the heating furnace (during the process of pushing the hook by the gripping rod to prepare for connection with the lifting cage);
[0024] Figure 3b is a schematic structural view of the lifting tool of Embodiment 1 of the present utility model inserted into the heating furnace (in the state where the hook is connected to the lifting cage);
[0025] Figure 4 is a schematic structural view of Embodiment 2 of the present utility model.
[0026] Wherein: 1, vertical rod; 2, hook; 3, lifting ring; 4, gripping rod; 5, screw; 6, heating furnace; 7, lifting cage; 8, upper screw hole; 9, lower screw hole; 10, vertical rod; 11, inclined rod; 21, upper vertical rod; 22, lower vertical rod; 23, lower connecting screw; 24, connecting screw hole. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] The present utility model will be further described below in conjunction with the drawings and embodiments:
[0028] Embodiment 1: Referring to Figures 1 - 3b as shown, a lifting tool includes a vertical rod 1, a hook 2 provided at the bottom of the vertical rod 1, and a lifting ring 3 provided at the top of the vertical rod 1. A gripping rod 4 is further installed on the vertical rod 1, and the gripping rod 4 is arranged close to the lifting ring 3;
[0029] At least one screw hole is provided above the outer surface of the vertical rod 1, and the screw hole is arranged close to the lifting ring 3. A screw 5 is provided at the inner end of the gripping rod 4, and the gripping rod 4 is screwed to the screw hole through the screw 5.
[0030] In this embodiment, when taking out the cage 7 from the heating furnace 6, the vertical rod is connected to the hook of the overhead crane (or other hoisting equipment, taking the overhead crane as an example in this embodiment) through the top lifting ring. Then, the furnace door at the top of the heating furnace is opened. The overhead crane moves the vertical rod to the furnace opening of the heating furnace and moves it downward, so that the vertical rod and the hook at the bottom move into the heating furnace. The operator stands beside the furnace opening (the heating furnace with a top opening is generally set underground). At this time, the outer end of the grasping rod is above the side of the furnace opening. The operator adjusts the downward movement distance of the vertical rod according to the position of the grasping rod. Then, the operator grabs the grasping rod and moves the position of the bottom of the vertical rod until the hook catches the hanging connection of the cage. The operator operates the overhead crane to drive the vertical rod to move upward, so that the hook at the bottom of the vertical rod hooks the cage and lifts the cage upward to break away from the heating furnace, thus realizing the rapid lifting out of the cage from the heating furnace, which is convenient and fast. After lifting out, after placing the cage at the predetermined position, the overhead crane drives the vertical rod to move downward so that the hook is below the hanging connection of the cage. Then, the overhead crane is moved so that the hook moves to the side of the hanging connection of the cage. Then, the overhead crane drives the vertical rod to move upward so that the hook moves upward to break away from the cage. In this way, from a distance, by observing the position of the grasping rod, the position of the vertical rod and the hook relative to the cage can be known. The operator can stay away from the high-temperature cage and the high-temperature forgings in the cage, making the operation more convenient, improving the operator's experience, and also preventing the harm of high temperature to the operator and reducing potential safety hazards.
[0031] See Figure 1 、 2 As shown, there are two screw holes, and the two screw holes are arranged at intervals up and down. The grasping rod 4 is screwed to one of the screw holes through the screw 5.
[0032] In this embodiment, two screw holes with different heights are provided, so that the operator can adjust the position of the grasping rod relative to the hook according to cages of different heights, improving the convenience of adjusting the position of the bottom of the vertical rod by the grasping rod, being applicable to different operators, and improving the convenience of operation.
[0033] See Figure 1 、 2 As shown, the screw holes include an upper screw hole 8 and a lower screw hole 9. The axis of the upper screw hole 8 is perpendicular to the axis of the vertical rod 1. The lower screw hole 9 is inclined inward from top to bottom, and the included angle between the axis of the lower screw hole 9 and the axis of the vertical rod 1 is 45° - 75°.
[0034] In this embodiment, when the grab bar is connected to the upper screw hole, the grab bar is perpendicular to the vertical rod. When the grab bar is screwed to the lower screw hole, a V-shaped structure is formed between the grab bar and the vertical rod above the lower screw hole. In this way, when grasping the grab bar to drive the bottom of the vertical rod to adjust its position relative to the hoisting device, the bottom of the vertical rod can penetrate deeper into the heating furnace, and the operator can also grasp the grab bar. At the same time, when pushing to adjust the position of the bottom of the vertical rod, it is more labor-saving.
[0035] See Figure 1 , 2 As shown in, the hook 2 includes a vertical rod 10 and an inclined rod 11. The top of the vertical rod 10 is fixedly connected to the bottom of the vertical rod 1. The vertical rod 10 is coaxially arranged with the vertical rod 1. The inner end of the inclined rod 11 is connected to the bottom of the vertical rod 10, and the inclined rod 11 is inclined upward from the inside to the outside.
[0036] The screw hole is arranged on the outer surface of the left side of the vertical rod 1. The left end of the inclined rod 11 is connected to the bottom of the vertical rod 10. The right end of the inclined rod 11 is arranged on the right side of the vertical rod 10, and the inclined rod 11 is inclined upward from left to right.
[0037] In this embodiment, the hook is arranged on the opposite side of the grab bar. In this way, after the hoisting device is hooked to the top of the vertical rod, the vertical rod is relatively more balanced, making the vertical rod as vertical as possible, which is convenient for the bottom of the vertical rod to be inserted into the heating furnace and aligned with the suspension cage. Among them, a V-shaped structure with an upward opening is formed between the inclined rod and the vertical rod. When the hook is hooked to the suspension cage, the operator grasps the grab bar and drives the bottom of the vertical rod to move so that the inclined rod penetrates below the hoisting position of the suspension cage. Then the vertical rod moves upward, and the hoisting position of the suspension cage will enter into this V-shaped structure. When the vertical rod moves upward, the suspension cage will not break away from the hook, ensuring the stability and safety of the hoisting.
[0038] Among them, a grab ring (not shown in the figure) is provided at the outer end of the grab bar. The setting of the grab ring is convenient for the operator to grasp the grab bar and prevent slipping (the temperature is high beside the heating furnace, and the hands are prone to sweating. Grasping the grab bar directly is easy to slip). At the same time, a heat insulation layer can also be coated on the grab ring to prevent the operator from being scalded by the high temperature transmitted on the vertical rod.
[0039] Embodiment 2: See Figure 4 As shown in, a hoisting tool has a structure basically similar to that of Embodiment 1, and the difference lies in that: the vertical rod 1 includes an upper vertical rod 21 and a lower vertical rod 22. The lifting ring 3 is installed at the top of the upper vertical rod 21. The screw hole is arranged on the outer surface of the upper vertical rod 21 and is close to the lifting ring 3;
[0040] The hook 2 is installed at the bottom of the lower vertical rod 22, and the upper vertical rod 21 and the lower vertical rod 22 are detachably connected.
[0041] A lower connecting screw rod 23 is provided at the bottom of the upper vertical rod 21 coaxially, and a connecting screw hole 24 that is in threaded fit with the lower connecting screw rod 23 is provided at the top of the lower vertical rod 22. The upper vertical rod 21 is connected to the lower vertical rod 22 through the lower connecting screw rod 23 and the connecting screw hole 24.
[0042] The bottom surface of the upper vertical rod 21 contacts the top surface of the lower vertical rod 22.
[0043] In this embodiment, the vertical rod is provided with an upper vertical rod and a lower vertical rod. In this way, according to heating furnaces with different depths or cages with different heights (the bottom of the cage will be placed on the bottom surface of the heating furnace), lower vertical rods with different lengths can be selected. In this way, after the hook is inserted into the heating furnace, the grasping rod will always be above the furnace mouth of the heating furnace. The operator can always grasp the grasping rod to operate the vertical rod, and the hook can hook the cage. In this way, costs can be saved, and the height position of the grasping rod relative to the furnace mouth is within a certain range, enabling the operator to conveniently grasp the grasping rod to adjust the position of the vertical rod to ensure that the hook can successfully hook the cage.
[0044] The upper vertical rod and the lower vertical rod can be quickly connected or disassembled through the lower connecting screw rod and the connecting screw hole, which is convenient and fast, and has good stability and strength.
Claims
1. A lifting tool, comprising a pole, a hook arranged at the bottom of the pole and a lifting ring arranged at the top of the pole, characterized in that: A grab bar is also installed on the vertical pole, and the grab bar is arranged close to the lifting ring; At least one screw hole is arranged above the outer surface of the vertical pole, and the screw hole is arranged close to the hanging ring. A screw rod is arranged at the inner end of the grab rod, and the grab rod is screwed and connected with the screw hole through the screw rod.
2. The lifting tool according to claim 1, characterized in that: There are two screw holes, which are spaced apart from each other. The grab bar is screwed to one of the screw holes via the screw rod.
3. The lifting tool according to claim 2, characterized in that: The screw hole includes an upper screw hole and a lower screw hole. The axis of the upper screw hole is perpendicular to the axis of the vertical pole. The lower screw hole is inclined inward from top to bottom. The axis of the lower screw hole forms an angle of 45° to 75° with the axis of the vertical pole.
4. The lifting tool according to claim 1, characterized in that: The hook comprises a vertical rod and an oblique rod, the top of the vertical rod is fixedly connected to the bottom of the vertical rod, the inner end of the oblique rod is connected to the bottom of the vertical rod, and the oblique rod is arranged upwardly from the inside to the outside.
5. The lifting tool according to claim 4, characterized in that: The screw hole is arranged on the left outer surface of the vertical rod, the left end of the oblique rod is connected to the bottom of the vertical rod, the right end of the oblique rod is arranged on the right side of the vertical rod, and the oblique rod is arranged upwardly from left to right.
6. The lifting tool according to claim 1, characterized in that: The vertical rod comprises an upper vertical rod and a lower vertical rod, the lifting ring is installed on the top of the upper vertical rod, the screw hole is arranged on the outer surface of the upper vertical rod, and the screw hole is arranged close to the lifting ring; The hook is installed at the bottom of the lower upright pole, and the upper upright pole is detachably connected to the lower upright pole.
7. The lifting tool according to claim 6, characterized in that: A coaxially arranged lower connecting screw is provided at the bottom of the upper vertical rod, a connecting screw hole threadedly matched with the lower connecting screw is provided at the top of the lower vertical rod, and the upper vertical rod is connected to the lower vertical rod via the lower connecting screw and the connecting screw hole.
8. The lifting tool according to claim 7, characterized in that: The bottom surface of the upper upright bar contacts the top surface of the lower upright bar.
9. The lifting tool according to claim 1, characterized in that: The outer end of the grab bar is provided with a grab ring.