A tongs

Abstract

The utility model discloses a kind of tongs, including first clamping arm and second clamping arm, the first clamping arm and second clamping arm top are hinged with support rod, the first clamping arm and second clamping arm between being equipped with protection component, two the support rod top is commonly equipped with adjusting component, and the middle part between two support rods is hinged, the protection component includes the hinge pin of first clamping arm fixed connection and the fixed ring of second clamping arm front fixed connection.The utility model is by being provided with first clamping arm, second clamping arm, support rod, protection component and adjusting component, the position of first clamping arm and second clamping arm can be locked by protection component, avoid when clamping article, first clamping arm and second clamping arm rotate, can prevent article drop;By being provided with adjusting component, tongs can be driven to rotate, and then article can be controlled to rotate, can bring article to rotate when lifting article.

Description

Technical Field

[0001] This utility model relates to the field of lifting clamp technology, specifically a type of lifting clamp. Background Technology

[0002] Forging is a metal processing method that uses forging machinery to apply pressure to metal billets, causing them to undergo plastic deformation to obtain forgings with specific mechanical properties, shapes, and dimensions. Lifting clamps are special tools used for lifting operations, mainly for vertical lifting of steel plates, horizontal handling, and flipping of structural steel. Lifting clamps are needed to assist in lifting steel plates and other items during forging.

[0003] Existing patent CN220664651U discloses a novel billet lifting clamp, relating to the field of lifting clamp technology. It includes a support plate with a limiting assembly at its bottom. The lifting clamp assembly includes a hydraulic cylinder located at the bottom of a positioning plate. A limiting ring is located in the middle of the outer wall of the hydraulic cylinder. A rotating shaft is installed at the bottom of the hydraulic cylinder, and a lifting clamp frame is installed at the bottom of the rotating shaft. A support rod supports and reinforces the positioning plate via a reinforcing shaft. The bottom plate of the reinforcing plate provides limiting reinforcement to two limiting clamps on the front. Reinforcing rods on the inner sides of the two limiting clamps are connected. Limiting connecting rods on the left and right sides of the positioning plate are movably connected to the limiting connecting plates. The limiting shaft provides limiting reinforcement to the hydraulic cylinder. The limiting ring on the outer wall of the hydraulic cylinder guides the hydraulic cylinder. The hydraulic cylinder drives the lifting clamp frame to rotate via the rotating shaft. The lifting clamp at the bottom of the lifting clamp frame clamps the items to be held. Limiting bolts provide limiting protection for the lifting clamp.

[0004] Based on the search of the aforementioned patents and the findings of existing lifting clamps, while the aforementioned lifting clamps can clamp items during use, they lack a locking structure. If the clamps rotate while clamping an item, the item may be released, potentially causing it to fall and be damaged. Furthermore, the item is not easily rotated when lifted, which limits its practicality. Utility Model Content

[0005] The purpose of this utility model is to provide a lifting clamp to solve the problems mentioned in the background art. Although the existing lifting clamps can clamp items, they lack a locking structure. When clamping items, if the clamps rotate, the items are easily released, which can easily cause the items to fall and be damaged. Moreover, the items are not easy to rotate when lifted, which has certain limitations and reduces their practicality.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a lifting clamp, comprising a first clamping arm and a second clamping arm, wherein a support rod is hinged to the top of both the first clamping arm and the second clamping arm, a protective component is provided between the first clamping arm and the second clamping arm, an adjustment component is provided at the top of the two support rods, and the middle portions of the two support rods are hinged together. The protective component includes a rotating shaft fixedly connected to the middle of the first clamping arm, a fixing ring fixedly connected to the middle of the front side of the second clamping arm, a plurality of protective grooves arranged in a circle on the outer circumference of the front end of the rotating shaft, a sliding groove inside the fixing ring, a protective rod disposed in the sliding groove, a spring fixedly connected to the top of the protective rod, and a driving component for moving the protective rod. The protective rod is slidably connected to the sliding groove, and the bottom of the protective rod can be inserted into the protective groove. The second clamping arm is rotatably connected to the rotating shaft, and the front end of the rotating shaft rotatably passes through the fixing ring.

[0007] Preferably, the adjusting component includes a connecting frame hinged to the top of both support rods, a protective box disposed on the top of the connecting frame, a first drive shaft fixedly connected to the top of the connecting frame, a driven gear fixedly connected to the outside of the first drive shaft, a master gear connected to the driven gear, a second drive shaft fixedly connected to the master gear, and a motor fixedly connected to the top of the second drive shaft. The master gear meshes with the driven gear, and both the first drive shaft and the second drive shaft are rotatably connected to the protective box.

[0008] Preferably, the driving component includes a slide rod fixedly connected to the top of the protective rod, a movable plate fixedly connected to the top of the slide rod, and a pull ring fixedly connected to the top of the movable plate. The bottom of the slide rod extends through the fixed ring into the slide groove, and the slide rod is slidably connected to the fixed ring.

[0009] Preferably, two anti-rotation grooves are respectively formed on the two side walls of the bottom of the chute, and anti-rotation plates are slidably connected in the anti-rotation grooves. The ends of the two anti-rotation plates are fixedly connected to the outer wall of the protective rod.

[0010] Preferably, the bottom of the protective rod is provided with a reinforcing groove, and a reinforcing rod is fixedly connected to the inner wall of the protective groove. The reinforcing rod is slidably inserted into the reinforcing groove.

[0011] Preferably, the bottom of the protective box has a support groove with the first drive shaft as the axis, and two support blocks are fixedly connected to the top two sides of the connecting frame, and the two support blocks are slidably connected and embedded in the support groove.

[0012] Preferably, the protective box has heat dissipation holes on both sides, and the heat dissipation holes are opened at an angle.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by setting up a first clamping arm, a second clamping arm, a support rod, and a protective component, allows the sliding rod to move upward by pulling the pull ring, which in turn moves the protective rod upward, causing the bottom of the protective rod to disengage from the protective groove. Simultaneously, the compression of the spring deforms, releasing the second clamping arm to facilitate its rotation. The spring's return causes the protective rod to move downward and reset, allowing the bottom of the protective rod to re-engage into the protective groove. This fixes the first and second clamping arms, preventing them from rotating when clamping items, thus preventing items from falling and protecting them, reducing the probability of damage, and greatly improving practicality.

[0014] 2. This utility model, by providing an adjustment component, allows the motor to drive the second drive shaft to rotate the main gear, which in turn drives the driven gear to rotate, which in turn drives the first drive shaft to rotate, which in turn drives the lifting clamp to rotate, thereby controlling the rotation of the object. It can rotate the object while lifting it, which greatly expands the scope of application and further enhances its practicality. Attached Figure Description

[0015] Figure 1 A three-dimensional structural schematic diagram provided for this utility model; Figure 2 Front view provided for this utility model; Figure 3 Provided by this utility model Figure 2 A three-dimensional cross-sectional view at point AA; Figure 4 Provided by this utility model Figure 3 Enlarged view of point C in the middle; Figure 5 Provided by this utility model Figure 3 Enlarged view at point D; Figure 6 The left view provided for this utility model; Figure 7 Provided by this utility model Figure 6 3D cross-sectional view at point BB; Figure 8 Provided by this utility model Figure 7 Enlarged view of point E in the middle.

[0016] In the diagram: 1. First clamping arm; 11. Second clamping arm; 12. Support rod; 21. Rotating shaft; 22. Fixing ring; 23. Protective groove; 24. Slide groove; 25. Protective rod; 26. Spring; 31. Connecting frame; 32. Protective box; 33. First drive shaft; 34. Drive gear; 35. Main gear; 36. Second drive shaft; 37. Motor; 41. Slide rod; 42. Moving plate; 43. Pulling ring; 51. Anti-rotation groove; 52. Anti-rotation plate; 61. Reinforcing groove; 62. Reinforcing rod; 71. Support groove; 72. Support block; 81. Heat dissipation hole. Detailed Implementation

[0017] 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.

[0018] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 This utility model provides a technical solution: a lifting clamp, including a first clamping arm 1 and a second clamping arm 11, with a support rod 12 hinged to the top of both the first clamping arm 1 and the second clamping arm 11, a protective component between the first clamping arm 1 and the second clamping arm 11, an adjustment component on the top of the two support rods 12, and the middle parts of the two support rods 12 are hinged together.

[0019] The protective components include a rotating shaft 21 fixedly connected to the middle of the first clamping arm 1, a fixing ring 22 fixedly connected to the middle of the front side of the second clamping arm 11, a plurality of protective grooves 23 arranged in a circular pattern on the outer side of the front end of the rotating shaft 21, a sliding groove 24 inside the fixing ring 22, a protective rod 25 disposed in the sliding groove 24, a spring 26 fixedly connected to the top of the protective rod 25, and a driving component for moving the protective rod 25. The top of the spring 26 is connected to the inner top wall of the spring 26, the protective rod 25 is slidably connected to the sliding groove 24, the bottom of the protective rod 25 can be inserted into the protective groove 23, the second clamping arm 11 is rotatably connected to the rotating shaft 21, and the front end of the rotating shaft 21 is rotatably inserted into the fixing ring 22.

[0020] In use, the protective rod 25 moves upward, causing the spring 26 to deform. At the same time, the bottom of the protective rod 25 can disengage from the current protective groove 23, releasing the second clamping arm 11. The first clamping arm 1 and the second clamping arm 11 can rotate, thus clamping the item. Moreover, the spring 26 returns to its original position, causing the protective rod 25 to move upward and reset, so that the bottom of the protective rod 25 is inserted into the protective groove 23, which can fix the second clamping arm 11, thereby improving the clamping stability of the item. This prevents the first clamping arm 1 and the second clamping arm 11 from rotating when lifted, preventing the item from falling and protecting the item.

[0021] In this embodiment, the driving component includes a slide rod 41 fixedly connected to the top of the protective rod 25, a movable plate 42 fixedly connected to the top of the slide rod 41, and a pull ring 43 fixedly connected to the top of the movable plate 42. The bottom of the slide rod 41 extends through the fixed ring 22 into the interior of the slide groove 24, and the slide rod 41 is slidably connected to the fixed ring 22. The pull ring 43 can drive the movable plate 42 to move upward, which in turn can drive the slide rod 41 to move upward, which in turn can drive the protective rod 25 to move upward, facilitating the release of the second clamping arm 11 and facilitating the clamping or release of items.

[0022] Preferably, two anti-rotation grooves 51 are respectively formed on the two side walls of the bottom of the slide groove 24. Anti-rotation plates 52 are slidably connected in the anti-rotation grooves 51, and the ends of the two anti-rotation plates 52 are fixedly connected to the outer wall of the protective rod 25. The protective rod 25 can drive the anti-rotation plates 52 to slide in the anti-rotation grooves 51. The anti-rotation plates 52 can prevent the protective rod 25 from rotating, thereby protecting the spring 26 and preventing the spring 26 from rotating and being damaged.

[0023] Preferably, a reinforcing groove 61 is provided at the bottom of the protective rod 25, and a reinforcing rod 62 is fixedly connected to the inner lower wall of the protective groove 23. The reinforcing rod 62 is slidably inserted into the reinforcing groove 61. The reinforcing rod 62 can be inserted into the reinforcing groove 61, which can further improve the locking performance of the protective rod 25 on the second clamping arm 11, and thus further improve the clamping stability.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 as well as Figure 8The adjusting component includes a connecting frame 31 hinged to the top of both support rods 12, a protective box 32 located on the top of the connecting frame 31, a first drive shaft 33 fixedly connected to the top of the connecting frame 31, a driven gear 34 fixedly connected to the outside of the first drive shaft 33, a master gear 35 connected to the driven gear 34, a second drive shaft 36 fixedly connected to the master gear 35, and a motor 37 fixedly connected to the top of the second drive shaft 36. The master gear 35 meshes with the driven gear 34. The first drive shaft 33 and the second drive shaft 36 are both rotatably connected to the protective box 32. The driven gear 34, the master gear 35, the second drive shaft 36, and the motor 37 are all located inside the protective box 32. The motor 37 is fixedly connected to the inner top wall of the protective box 32.

[0025] In use, the motor 37 can drive the second drive shaft 36 to rotate, which in turn drives the main gear 35 to rotate. The main gear 35 can drive the driven gear 34 to rotate slowly, which in turn drives the first drive shaft 33 and the connecting frame 31 to rotate, thereby causing the item to rotate. The item can be rotated while being lifted.

[0026] Preferably, the bottom of the protective box 32 has a support groove 71 centered on the first drive shaft 33. Two support blocks 72 are fixedly connected to the top sides of the connecting frame 31, and both support blocks 72 are slidably embedded within the support groove 71. Rotation of the connecting frame 31 drives the support blocks 72 to rotate, thereby improving the rotational stability of the connecting frame 31 and consequently improving the rotational stability of the clamp and the object. Preferably, heat dissipation holes 81 are provided on both sides of the protective box 32, and the heat dissipation holes 81 are opened at an angle. The heat dissipation holes 81 can facilitate the heat dissipation of the motor 37 and prevent the temperature inside the protective box 32 from becoming too high.

[0027] Working principle: During operation, pulling the pull ring 43 upward causes the moving plate 42 to move upward, which in turn causes the sliding rod 41 to move upward, which in turn causes the protective rod 25 to move upward. The movement of the protective rod 25 compresses the spring 26, causing it to deform. At the same time, the bottom of the protective rod 25 can disengage from the current protective groove 23. Then, the first clamping arm 1 and the second clamping arm 11 can be rotated to clamp the item. After releasing the pull ring 43, the spring 26 returns to its original position, causing the protective rod 25 to move downward and reset, allowing the bottom of the protective rod 25 to re-engage into the corresponding protective groove 23. This locks the first clamping arm 1 and the second clamping arm 11, preventing them from rotating and causing the item to detach, thus improving the stability of the hoisting. When it is necessary to rotate the object, the motor 37 can be started. The operation of the motor 37 can drive the second drive shaft 36 to rotate. The rotation of the second drive shaft 36 can drive the main gear 35 to rotate. The rotation of the main gear 35 can drive the driven gear 34 to rotate. The rotation of the driven gear 34 can drive the first drive shaft 33 to rotate, which in turn can drive the connecting frame 31 to rotate, which in turn can drive the lifting clamp to rotate, which in turn can drive the object to rotate. The object can be rotated and its direction can be adjusted. The above is the working process of the entire device. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] 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 clamp, comprising a first clamping arm (1) and a second clamping arm (11), characterized in that: The first clamping arm (1) and the second clamping arm (11) are both hinged to the top of a support rod (12). A protective component is provided between the first clamping arm (1) and the second clamping arm (11). An adjustment component is provided at the top of the two support rods (12). The middle parts of the two support rods (12) are hinged together. The protective component includes a rotating shaft (21) fixedly connected to the middle of the first clamping arm (1), a fixing ring (22) fixedly connected to the middle of the front side of the second clamping arm (11), a plurality of protective grooves (23) arranged in a circle on the outer side of the front end of the rotating shaft (21), a sliding groove (24) opened inside the fixing ring (22), a protective rod (25) provided in the sliding groove (24), a spring (26) fixedly connected to the top of the protective rod (25), and a driving component for moving the protective rod (25). The protective rod (25) is slidably connected to the sliding groove (24), and the bottom of the protective rod (25) can be inserted into the protective groove (23). The second clamping arm (11) is rotatably connected to the rotating shaft (21), and the front end of the rotating shaft (21) is rotatably inserted into the fixing ring (22).

2. The lifting clamp according to claim 1, characterized in that: The adjustment component includes a connecting frame (31) hinged to the top of both support rods (12), a protective box (32) on the top of the connecting frame (31), a first drive shaft (33) fixedly connected to the top of the connecting frame (31), a driven gear (34) fixedly connected to the outside of the first drive shaft (33), a main gear (35) connected to the driven gear (34), a second drive shaft (36) fixedly connected to the main gear (35), and a motor (37) fixedly connected to the top of the second drive shaft (36). The main gear (35) meshes with the driven gear (34), and both the first drive shaft (33) and the second drive shaft (36) are rotatably connected to the protective box (32).

3. A lifting clamp according to claim 1, characterized in that: The driving component includes a slide rod (41) fixedly connected to the top of the protective rod (25), a movable plate (42) fixedly connected to the top of the slide rod (41), and a pull ring (43) fixedly connected to the top of the movable plate (42). The bottom of the slide rod (41) extends through the fixed ring (22) into the interior of the slide groove (24), and the slide rod (41) is slidably connected to the fixed ring (22).

4. A lifting clamp according to claim 1, characterized in that: Two anti-rotation grooves (51) are respectively opened on the two side walls of the bottom of the slide groove (24). Anti-rotation plates (52) are slidably connected in the anti-rotation grooves (51), and the ends of the two anti-rotation plates (52) are fixedly connected to the outer wall of the protective rod (25).

5. A lifting clamp according to claim 1, characterized in that: The bottom of the protective rod (25) is provided with a reinforcing groove (61), and a reinforcing rod (62) is fixedly connected to the inner wall of the protective groove (23). The reinforcing rod (62) is slidably inserted into the reinforcing groove (61).

6. A lifting clamp according to claim 2, characterized in that: The bottom of the protective box (32) has a support groove (71) with the first drive shaft (33) as the axis. Two support blocks (72) are fixedly connected to the top two sides of the connecting frame (31). The two support blocks (72) are slidably connected in the support groove (71).

7. A lifting clamp according to claim 2, characterized in that: The protective box (32) has heat dissipation holes (81) on both sides, and the heat dissipation holes (81) are opened at an angle.

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