Hoisting mechanism for long-axis forgings

Abstract

The utility model relates to the technical field of processing of long-axis forgings, and discloses a hoisting mechanism for long-axis forgings, which comprises a hoisting frame provided with two hoisting clamps. The hoisting clamp comprises a supporting plate, a connecting rod, clamp arms and clamp teeth, second mounting seats are arranged at the bottoms of the two clamp arms on the right side, and rotary automatic locking pieces are arranged on the second mounting seats; the rotary automatic locking piece comprises a rotating rod, a lock hook, two vertical plates, a fixing shaft and a lock block, wherein the lock hook and the rotating rod are of an integrally-formed structure, the two vertical plates are installed in a groove in the side face of the second installation base, the fixing shaft is fixedly connected with the two vertical plates, and the lock block is rotationally arranged on the outer side face of the fixing shaft and matched with the lock hook. The automatic locking piece achieves locking and releasing of the clamp through cooperation of the rotating rod and the lock hook. Synchronous movement of the clamp arms and automatic locking and releasing of the clamp are achieved through the shaft rod and the rotary automatic locking piece. By reducing manual operation, the lifting efficiency and safety are improved, meanwhile, the burden of workers is relieved, the mechanism adapts to the severe working environment, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of long shaft forging processing, and particularly relates to a hoisting mechanism for long shaft forgings. Background Art

[0002] The lifting mechanism used in the processing of long shaft forgings is mainly composed of structural components such as the lifting frame, lifting rings, and lifting fixtures. The lifting frame is the basic part of the lifting mechanism, used to support and fix the entire lifting fixture. The lifting ring is located on the top of the lifting frame and is used to connect the sling or crane hook. The lifting fixture is used to clamp and stabilize the forgings.

[0003] Traditionally, the lifting fixtures used in lifting mechanisms for long shaft forgings have been manually unlocked and locked. This time-consuming operation significantly reduces work efficiency, especially in applications requiring frequent lifting. Manual operation can lead to errors. For example, improper operation can result in the fixture not being fully locked or unlocked correctly, increasing safety risks during the lifting process. Heavy loads and frequent operations can increase worker workload, and in harsh working environments, such as those exposed to high temperatures, high noise levels, and high dust levels, the accuracy and reliability of manual operation can be compromised. Utility Model Content

[0004] The present invention aims to solve the technical problem that the locking of the lifting clamp in the above-mentioned prior art is all performed manually.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A lifting mechanism for long shaft forgings comprises a lifting frame, two ends of which are equipped with two lifting fixtures for clamping and stabilizing the long shaft forgings;

[0007] The lifting fixture includes a support plate, a connecting rod, a clamp arm, and a clamp tooth. The support plate is rotatably connected to the four clamp arms through four connecting rods located on both sides and arranged symmetrically in front and back. A first mounting seat is provided at the bottom of the two left clamp arms, and a second mounting seat is provided at the bottom of the two right clamp arms. The second mounting seat is provided with a rotating automatic locking member.

[0008] The rotary automatic locking member includes a rotating rod, a locking hook integrally formed with the rotating rod, two vertical plates mounted in the grooves on the side of the second mounting seat, a fixed shaft fixedly connecting the two vertical plates, and a locking block rotatably arranged on the outer side of the fixed shaft and cooperating with the locking hook;

[0009] When the automatic locking element is rotated to lock, the lock hook on the rotating rod is limited in the slot and abuts against the outer side surface of the lock block;

[0010] When the automatic locking element is rotated to unlock, the lock hook on the rotating rod moves down to the bottom of the lock block and then moves up to push the lock block to rotate and move away from the second mounting seat along the outer surface of the lock block.

[0011] Preferably, the four connecting rods are rotatably arranged on the left and right sides of the support plate at one end away from the clamp arm.

[0012] Preferably, the support plate is an isosceles triangle plate, and a mounting hole for cooperating with the hoisting frame is provided on the support plate;

[0013] An inverted T-shaped limiting block is fixedly provided at the bottom of the supporting plate and is limited between the four connecting rods.

[0014] Preferably, the two connecting rods on the right and the two clamp arms on the left are connected by a shaft A, and the two connecting rods on the right and the two clamp arms on the left are rotatably sleeved on the outer side of the shaft A;

[0015] The two connecting rods on the left and the two clamp arms on the right are connected by a shaft rod B, and the two connecting rods on the left and the two clamp arms on the right are rotatably sleeved on the outer side of the shaft rod A;

[0016] The rotating rod is rotatably sleeved on the outer side surface of the shaft rod A.

[0017] Preferably, the two connecting rods on both sides are connected by a connecting plate.

[0018] Preferably, the four clamp arms are rotatably sleeved on the outer side of the central shaft, and a reinforcement plate is provided between the two clamp arms on the left side.

[0019] Preferably, a limit guide seat is provided between the two clamp arms on the right side, and the rotating rod and the lock hook move along the outer surface of the limit guide seat when moving up or down.

[0020] The limit guide seat ensures the stability of the lock hook during movement, avoids misoperation, and avoids affecting the movement of the connecting rod, clamp arm and clamp teeth.

[0021] Preferably, two jaws are provided and are fixed to the bottom of the first mounting seat and the bottom of the second mounting seat respectively.

[0022] Preferably, the pliers teeth include two tooth plates symmetrically arranged front and back and a plurality of nylon wheels fixed between the two tooth plates and arranged along the inner edge lines of the tooth plates.

[0023] Nylon wheels can reduce damage to the forging surface.

[0024] Preferably, a third mounting seat is provided on the outer side surface at the center position of the central shaft, and the bottom of the third mounting seat is provided with an outer rod, an inner rod slidingly guided along the inner wall surface of the outer rod to extend to the bottom of the outer rod, a spring connecting the inner top wall surface of the outer rod and the inner rod, and an arc-shaped panel fixed to the bottom of the inner rod and cooperating with two jaws to stably clamp long axis forgings.

[0025] The related mechanical structures such as the third mounting seat and the outer sleeve rod, inner sleeve rod and curved panel enable the clamp to clamp the forging more stably and reduce shaking during the lifting process.

[0026] Compared with the prior art, the technical effects and advantages of the utility model are as follows: the lifting mechanism for long shaft forgings includes a lifting fixture with an automatic locking function. The lifting fixture is composed of a support plate, a connecting rod, a clamp arm and clamp teeth, and the synchronous movement of the clamp arm and the automatic locking and releasing of the clamp are achieved through the shaft rod and the rotating automatic locking member. The working principle of the lifting mechanism is based on the synergy of the mechanical connecting rod and the automatic locking mechanism. The support plate is connected to the clamp arm through the connecting rod to form a stable structure. The automatic locking member realizes the locking and releasing of the clamp through the cooperation of the rotating rod and the locking hook. When the lifting fixture moves down and then up, the locking hook pushes the locking block to rotate, so that the clamp clamps the forging. This process reduces manual intervention and ensures the accuracy and stability of the operation through the mechanical structure.

[0027] Automatic locking mechanisms reduce manual operation time, significantly improving work efficiency, especially in frequent lifting applications. Automatic locking mechanisms reduce the risk of operator error, ensuring that lifting fixtures are fully locked or correctly unlocked, mitigating safety hazards. Automatic locking mechanisms reduce worker workload, especially under heavy loads and frequent operation. The design of automatic locking mechanisms ensures accuracy in harsh working environments such as high temperatures, high noise levels, and high dust levels, improving operational reliability and stability. Automatic locking mechanisms reduce the possibility of mechanical failure, thereby reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the utility model;

[0029] Figure 2 This is a structural diagram of the lifting fixture of the utility model;

[0030] Figure 3 This is a diagram showing the locked state of the rotary automatic locking member of the utility model;

[0031] Figure 4 This is a diagram of the unlocking state of the rotary automatic locking member of the utility model.

[0032] In the figure: 1. lifting frame; 2. lifting fixture; 21. support plate; 22. connecting rod; 23. clamp arm; 24. clamp teeth; 2401. tooth plate; 2402. nylon wheel; 25. first mounting seat; 26. second mounting seat; 27. rotary automatic locking member; 2701. rotating rod; 2702. locking hook; 2703. vertical plate; 2704. fixed shaft; 2705. locking block; 28. slot; 29. mounting hole; 210. shaft A; 211. shaft B; 212. inverted T-shaped limit block; 213. reinforcement plate; 214. third mounting seat; 215. outer rod; 216. inner rod; 217. curved panel; 218. connecting plate; 219. center shaft; 220. limit guide seat. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] The following is combined with Figure 1-4 To further explain this application,

[0035] The embodiment of the present application discloses a hoisting mechanism for long shaft forgings, comprising a hoisting frame 1, with two hoisting fixtures 2 mounted at both ends thereof for clamping and stabilizing the long shaft forgings;

[0036] The lifting fixture 2 includes a support plate 21, a connecting rod 22, a clamp arm 23, and a clamp jaw 24. The support plate 21 is an isosceles triangular plate with mounting holes 29 for mounting on the lifting frame 1. The isosceles triangular plate provides structural stability, and the mounting holes 29 are designed to facilitate quick connection to the lifting frame 1, improving installation efficiency. The support plate 21 is rotatably connected to the four clamp arms 23 via four connecting rods 22 located on both sides of the support plate 21 and arranged symmetrically in front and back. The four connecting rods 22 are pivotally arranged on the left and right sides of the support plate 21, with one end away from the clamp arms 23. This improves structural stability, avoids uneven force on one side, and makes the movement of the clamp arms 23 more coordinated, reducing swing during lifting. An inverted T-shaped limit block 212 is fixed to the bottom of the support plate 21, which is positioned between the four connecting rods 22. The limit block prevents excessive movement of the connecting rods 22, ensures the correct position of the fixture, and improves the stability of the forging during lifting. The two connecting rods 22 on either side are connected by a connecting plate 218. The connecting plate 218 increases the lateral stability of the connecting rod 22 and prevents the connecting rod 22 from twisting during the lifting process.

[0037] The two connecting rods 22 on the right and the two clamp arms 23 on the left are connected by the shaft A210, and the two connecting rods 22 on the right and the two clamp arms 23 on the left are rotated and sleeved on the outer side of the shaft A210; the two connecting rods 22 on the left and the two clamp arms 23 on the right are connected by the shaft B211, and the two connecting rods 22 on the left and the two clamp arms 23 on the right are rotated and sleeved on the outer side of the shaft A210; through the connection between the shaft A210 and the shaft B211, the movement of the clamp arms 23 can be synchronously controlled to ensure uniform clamping force and improve the overall rigidity and durability of the mechanism.

[0038] The four clamp arms 23 are rotatably sleeved on the outer side of the central shaft 219, and a reinforcing plate 213 is provided between the two clamp arms 23 on the left. The design of the central shaft 219 makes the movement of the clamp arms 23 more orderly, improving the accuracy and stability of clamping.

[0039] A first mounting seat 25 is provided at the bottom of the two left clamp arms 23, and a second mounting seat 26 is provided at the bottom of the two right clamp arms 23. A rotary automatic locking member 27 is provided on the second mounting seat 26.

[0040] Two jaws 24 are provided, fixed to the bottom of the first mounting seat 25 and the bottom of the second mounting seat 26, respectively. The jaws 24 include two symmetrically arranged tooth plates 2401 and a plurality of nylon wheels 2402 fixed between the two tooth plates 2401 and arranged along the inner edge of the tooth plates 2401. The nylon wheels 2402 can reduce damage to the forging surface while providing good friction. When clamping long shaft forgings, they have good wrapping and cushioning performance.

[0041] A third mounting seat 214 is provided on the outer side surface at the center position of the central shaft 219, and the bottom of the third mounting seat 214 is provided with an outer rod 215, an inner rod 216 that slides along the inner wall surface of the outer rod 215 and extends to the bottom of the outer rod 215, a spring connecting the inner top wall surface of the outer rod 215 and the inner rod 216, and an arc-shaped panel 217 fixed to the bottom of the inner rod 216 and cooperating with the two jaws 24 to stably clamp the long axis forgings.

[0042] The related mechanical structures such as the third mounting seat 214 and the outer rod 215, the inner rod 216 and the curved panel 217 enable the clamp to clamp the forging more stably and reduce shaking during the lifting process.

[0043] The rotary automatic locking member 27 includes a rotating rod 2701, a locking hook 2702 integrally formed with the rotating rod 2701, two vertical plates 2703 installed in the side groove 28 of the second mounting seat 26, a fixed shaft 2704 fixedly connecting the two vertical plates 2703, and a locking block 2705 rotatably arranged on the outer side of the fixed shaft 2704 and cooperating with the locking hook 2702; the rotating rod 2701 is rotatably sleeved on the outer side of the shaft A210.

[0044] A position limiting guide 220 is provided between the two right clamp arms 23. The rotating rod 2701 and the locking hook 2702 move along the outer surface of the position limiting guide 220 during upward or downward movement. The position limiting guide 220 ensures the stability of the locking hook 2702 during movement, preventing misoperation and affecting the movement of the connecting rod 22, clamp arm 23, and clamp teeth 24.

[0045] When the automatic locking member 27 is rotated to lock, the lock hook 2702 on the rotating rod 2701 is limited in the slot 28 and abuts against the outer side of the locking block 2705;

[0046] When the automatic locking member 27 is rotated to unlock, the lock hook 2702 on the rotating rod 2701 moves down to the bottom of the locking block 2705 and then moves upward to push the locking block 2705 to rotate and move away from the second mounting seat 26 along the outer surface of the locking block 2705.

[0047] The arms 23 and jaws 24 of the lifting fixture 2 clamp the forging, while the rotary automatic locking member 27 controls the locking and releasing of the lifting fixture 2. When the rotary automatic locking member 27 is locked, the locking hook 2702 is retained within the slot 28 and abuts against the outer side of the locking block 2705, thereby securing the position of the arms 23. During the locking process, the locking hook 2702 moves downward and then retains within the slot 28, releasing the long shaft forging between the arms 23. When unlocking, the locking hook 2702 moves downward, pushing the locking block 2705 to rotate, causing the fixture to release the second mounting seat 26 and the arms 23, allowing the arms 23 to retract inward, thus clamping the forging.

[0048] The unlocking and locking process of the hoisting mechanism for long shaft forgings is as follows:

[0049] 1. Unlocking process:

[0050] First, the lifting fixture 2 is moved down to the ground or surface where the long shaft forging is placed. As the lifting fixture 2 is moved down, the locking hook 2702 moves down along the outer side of the locking block 2705 to the bottom of the locking block 2705.

[0051] When the lock hook 2702 drops to the bottom of the lock block 2705, the lifting fixture 2 moves upward, and the rotating rod 2701 and the lock hook 2702 move upward. During the upward movement of the lock hook 2702, the lock hook 2702 pushes the lock block 2705 to rotate;

[0052] As the locking block 2705 rotates, the locking hook 2702 moves up along the outer surface of the locking block 2705 and away from the second mounting seat 26 .

[0053] At this time, the clamp arm 23 can be freely retracted inward, so as to lift and clamp the long shaft forging.

[0054] 2. Locking process:

[0055] After the lifting fixture 2 clamps the forging, the lifting fixture 2 moves downward, and the rotating rod 2701 and the locking hook 2702 move downward along the limiting guide seat 220 until the locking hook 2702 is limited in the slot 28 and abuts the outer side of the locking block 2705.

[0056] After the locking hook 2702 is positioned in the slot 28 , the position of the clamp arm 23 is fixed, thereby achieving the release of the forging.

[0057] Compared with traditional technology, the lifting mechanism used for long-axis forgings adopts automatic locking parts, which reduces the time of manual operation, especially in frequent lifting situations, and can significantly improve work efficiency. The automatic locking parts reduce the risk of errors in manual operation, ensuring that the lifting fixture 2 can be completely locked or correctly unlocked, reducing safety hazards during the lifting process. The operation of the automatic locking parts reduces the labor intensity of workers, especially under heavy loads and frequent operations. In harsh working environments such as high temperature, high noise, and high dust, the accuracy of the automatic locking parts is not affected, which improves the reliability and stability of the lifting operation. The design of the automatic locking parts reduces the possibility of mechanical failure, thereby reducing maintenance costs.

[0058] In summary, this lifting mechanism has significant advantages in improving lifting efficiency, ensuring operational safety, reducing the burden on workers and adapting to harsh working environments.

[0059] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hoisting mechanism for long shaft forgings, comprising a hoisting frame (1), characterized in that: Two lifting fixtures (2) for clamping and stabilizing long-axis forgings are installed at both ends of the lifting frame (1); The lifting fixture (2) comprises a support plate (21), a connecting rod (22), a clamp arm (23) and a clamp tooth (24); the support plate (21) is rotatably connected to the four clamp arms (23) via four connecting rods (22) located on both sides thereof and symmetrically arranged front and back; a first mounting seat (25) is provided at the bottom of the two left clamp arms (23); a second mounting seat (26) is provided at the bottom of the two right clamp arms (23); and a rotary automatic locking member (27) is provided on the second mounting seat (26); The rotary automatic locking member (27) comprises a rotating rod (2701), a locking hook (2702) integrally formed with the rotating rod (2701), two vertical plates (2703) mounted in the side slots (28) of the second mounting seat (26), a fixed shaft (2704) fixedly connecting the two vertical plates (2703), and a locking block (2705) rotatably arranged on the outer side of the fixed shaft (2704) and cooperating with the locking hook (2702); When the automatic locking member (27) is rotated to lock, the lock hook (2702) on the rotating rod (2701) is limited in the slot (28) and abuts against the outer side surface of the locking block (2705); When the automatic locking member (27) is rotated to unlock, the lock hook (2702) on the rotating rod (2701) moves down to the bottom of the locking block (2705) and then moves up to push the locking block (2705) to rotate and move away from the second mounting seat (26) along the outer surface of the locking block (2705).

2. A hoisting mechanism for long shaft forgings according to claim 1, characterized in that: One end of four connecting rods (22) away from the clamp arm (23) is rotatably arranged on the left and right sides of the support plate (21).

3. The long shaft forging lifting mechanism according to claim 1, characterized in that: The support plate (21) is an isosceles triangle plate, and a mounting hole (29) for cooperating with the hoisting frame (1) is provided on the support plate (21); An inverted T-shaped limiting block (212) is fixedly provided at the bottom of the supporting plate (21) and is limited between the four connecting rods (22).

4. The hoisting mechanism for long shaft forgings according to claim 1, characterized in that: The two connecting rods (22) on the right side and the two clamp arms (23) on the left side are connected via a shaft A (210), and the two connecting rods (22) on the right side and the two clamp arms (23) on the left side are rotatably sleeved on the outer side of the shaft A (210); The two connecting rods (22) on the left and the two clamp arms (23) on the right are connected via a shaft B (211), and the two connecting rods (22) on the left and the two clamp arms (23) on the right are rotatably sleeved on the outer side of the shaft A (210); The rotating rod (2701) is rotatably sleeved on the outer side of the shaft A (210).

5. The long shaft forging lifting mechanism according to claim 1, characterized in that: The two connecting rods (22) on both sides are connected via a connecting plate (218).

6. The hoisting mechanism for long shaft forgings according to claim 1, characterized in that: The four clamp arms (23) are rotatably sleeved on the outer side of the central shaft (219), and a reinforcing plate (213) is provided between the two clamp arms (23) on the left side.

7. The hoisting mechanism for long shaft forgings according to claim 1, characterized in that: A position limiting guide seat (220) is provided between the two clamp arms (23) on the right side, and the rotating rod (2701) and the locking hook (2702) move along the outer surface of the position limiting guide seat (220) when they move up or down.

8. The hoisting mechanism for long shaft forgings according to claim 1, characterized in that: Two clamp teeth (24) are provided and are respectively fixed on the bottom of the first mounting seat (25) and the second mounting seat (26).

9. The long shaft forging lifting mechanism according to claim 8, characterized in that: The forceps teeth (24) include two tooth plates (2401) symmetrically arranged front and back, and a plurality of nylon wheels (2402) fixed between the two tooth plates (2401) and arranged along the inner edge lines of the tooth plates (2401).

10. The hoisting mechanism for long shaft forgings according to claim 6, characterized in that: A third mounting seat (214) is provided on the outer side surface at the center position of the central shaft (219), and an outer sleeve rod (215) is provided at the bottom of the third mounting seat (214), an inner sleeve rod (216) slidingly guided along the inner wall surface of the outer sleeve rod (215) and extending to the bottom of the outer sleeve rod (215), a spring connecting the inner top wall surface of the outer sleeve rod (215) and the inner sleeve rod (216), and an arc-shaped panel (217) fixed at the bottom of the inner sleeve rod (216) and cooperating with two clamp teeth (24) to stably clamp the long shaft forging.

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