Anti-falling hook of pneumatic hoist

Abstract

The utility model discloses an anti-drop hook of a pneumatic hoist, which comprises a connecting plate, a fixed block rotatably connected to the connecting plate, a chain fixedly connected to the upper end of the fixed block, a supporting plate fixedly connected to the fixed block at the bottom end of the connecting plate, a clamping hook fixedly connected to one side of the bottom end of the supporting plate, and limiting rods inserted into four sides, far away from each other, of the connecting plate. The upper end of the limiting rod is fixedly connected with a protrusion, the bottom end of the protrusion is fixedly connected with a spring, the limiting rod is sleeved with the spring, one end of the spring is fixedly connected with a connecting plate, the bottom end of the limiting rod is fixedly connected with a pressing plate, a strip-shaped hole penetrates through the pressing plate, and the clamping hook is inserted into the strip-shaped hole. The hook is installed on the bottom side of the connecting plate, the weight connecting rope is limited through the movable pressing plate and the strip-shaped hole, a gap can be generated between the clamping hook and the pressing plate by disassembling the inserting rod in the moving process, and the effect of being convenient to disassemble is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic hoists, in particular to an anti-drop hook of a pneumatic hoist. Background Art

[0002] A pneumatic hoist is a kind of machine that uses air power to drive an air motor and internal mechanical components to achieve the working requirements of lifting heavy objects. Usually, a pneumatic hoist needs to be used with a chain and a hook to connect the heavy objects. When the center axis of the hook is offset from the center axis of the heavy object, the pneumatic hoist will cause the heavy object to shake when it moves, resulting in unhooking.

[0003] According to the Chinese patent publication number CN219384487U, ", it mainly describes that the hanging piece that needs to be hung is inserted into the hook body, and the bottom end of the clamping plate is entered into the clamping slot by sliding the clamping plate downward. In this process, the clamping plate first squeezes the clamping rod, and the position of the clamping rod reaches the clamping hole. At this time, under the elastic force of the spring, the clamping rod can be inserted into the clamping hole, so that the hanging piece that needs to be hung is installed. Under the action of the clamping rod, the clamping plate will not be separated from the clamping slot, which plays a role in preventing it from falling off. The hanging method of the hook is simple and easy to hang. In this process, the rope body connecting the heavy object and the hook are blocked by the screw and the extrusion plate. Certain steps need to be added when disassembling and installing the heavy object, which makes the disassembly of the anti-falling hanger of the starting hoist more troublesome.

[0004] Therefore, an anti-drop hook for a pneumatic hoist is proposed to solve the problem that during this process, the rope body connecting the heavy object and the hook are blocked by the screw and the extrusion plate, and certain steps need to be added when disassembling and installing the heavy object, resulting in the problem that the anti-drop hook of the starting hoist is troublesome to disassemble. Utility Model Content

[0005] The technical problem to be solved by the utility model is as follows: in this process, the rope body and the hook connecting the heavy object are blocked by the screw and the extrusion plate, and certain steps need to be added when disassembling and installing the heavy object, resulting in the problem that it is troublesome to disassemble the anti-drop hanging part of the starting hoist. Therefore, an anti-drop hook for a pneumatic hoist is proposed.

[0006] The technical solution adopted by the utility model to solve the technical problem is: an anti-falling hook of a pneumatic hoist comprises a connecting plate, the connecting plate is rotatably connected with a fixing block, the upper end of the fixing block is fixedly connected with a chain, the fixing block is located at the bottom of the connecting plate and is fixedly connected to a supporting plate, one side of the bottom of the supporting plate is fixedly connected with a hook, four sides of the connecting plate away from each other are plugged with a limiting rod, the upper end of the limiting rod is fixedly connected to a protrusion, the bottom end of the protrusion is fixedly connected to a spring and the spring is sleeved on the limiting rod, one end of the spring is fixedly connected to the connecting plate, the bottom end of the limiting rod is fixedly connected to a pressing plate, a strip hole passes through the pressing plate and the hook is inserted into the strip hole, recesses are provided on both sides of the hook, the hook is located at the recess and contacts with an insertion rod, a card plate is sleeved on one side of the insertion rod, and the card plate is fixedly connected to both sides of the bottom end of the connecting plate.

[0007] As a preferred technical solution of the utility model, a slot is provided on the pressure plate, and a ball is embedded in the slot in the pressure plate for rotation. The ball contacts the insertion rod, and the stability of disassembly and installation of the insertion rod is facilitated by providing the ball.

[0008] As a preferred technical solution of the utility model, an arc-shaped groove is provided on the bottom side of the pressure plate, and the arc-shaped groove corresponds to the arc-shaped area of ​​the hook. By providing the arc-shaped groove, the adaptability of the hook to connect the heavy object rope body is increased.

[0009] As a preferred technical solution of the utility model, the pressure plate is located in the strip hole and is rotatably connected with a pressure ring via a rotating shaft, and the pressure ring is in contact with the hook. The stability of the hook can be increased by providing the pressure ring.

[0010] As a preferred technical solution of the utility model, a reinforcing rib is fixedly connected to the upper side of the hook, and the upper end of the reinforcing rib is fixedly connected to the bottom side of the support plate. The stability of the hook can be increased by providing the reinforcing rib.

[0011] The utility model has the following advantages: by installing a hook on the bottom side of the connecting plate and limiting the heavy object connecting rope through a movable pressure plate and a strip hole, a gap can be generated between the hook and the pressure plate by removing the insertion rod during movement, thereby achieving the effect of easy disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a side view cross-sectional structural diagram of an anti-drop hook of a pneumatic hoist in a preferred embodiment of the utility model;

[0013] Figure 2 It is a three-dimensional structural schematic diagram of an anti-drop hook of a pneumatic hoist in a preferred embodiment of the utility model;

[0014] Figure 3It is a schematic diagram of the enlarged structure of position A of an anti-drop hook of a pneumatic hoist according to a preferred embodiment of the utility model.

[0015] Explanation of the reference numerals in the accompanying drawings: 1. connecting plate; 2. fixing block; 3. supporting plate; 4. hook; 5. limiting rod; 6. pressure plate; 7. strip hole; 8. depression; 9. insertion rod; 10. clamping plate; 11. protrusion; 12. spring; 13. ball; 14. pressure ring; 15. arc groove; 16. reinforcing rib. DETAILED DESCRIPTION

[0016] The utility model will be further described below in conjunction with the accompanying drawings.

[0017] Please refer to Figure 1-3 The anti-falling hook of a pneumatic hoist shown in the figure comprises a connecting plate 1, a fixing block 2 is rotatably connected to the connecting plate 1, a chain is fixedly connected to the upper end of the fixing block 2, the fixing block 2 is located at the bottom end of the connecting plate 1 and is fixedly connected to a supporting plate 3, a hook 4 is fixedly connected to one side of the bottom end of the supporting plate 3, and a limiting rod 5 is inserted into the four sides of the connecting plate 1 that are away from each other, the upper end of the limiting rod 5 is fixedly connected to a protrusion 11, the bottom end of the protrusion 11 is fixedly connected to a spring 12 and the spring 12 is sleeved on the limiting rod 5, under the action of the spring 12, the pressing plate 6 is connected to the upper side of the hook 4, so as to prevent the hanging weight from falling. The connecting rope of the object falls off, thereby achieving the anti-falling effect of the pneumatic hoist. At the same time, when removing the connecting rope, it is only necessary to move the plug rod 9, and the connecting rope can be fallen off by pulling the limit rod 5. One end of the spring 12 is fixedly connected to the connecting plate 1, and the bottom end of the limit rod 5 is fixedly connected to the pressing plate 6. The pressing plate 6 is penetrated by a strip hole 7 and the hook 4 is plugged into the strip hole 7. The hook 4 can be limited by the strip hole 7. Recesses 8 are provided on both sides of the hook 4. The hook 4 is located at the recess 8 and contacts with the plug rod 9. A card plate 10 is sleeved on one side of the plug rod 9, and the card plate 10 is fixedly connected to both sides of the bottom end of the connecting plate 1.

[0018] The insertion rod 9 contacts the ball 13, and the ball 13 rotates and is embedded in the slot of the pressure plate 6. The slot is located on the pressure plate 6. The ball 13 is provided to reduce the friction of the movement of the insertion rod 9, which is convenient for disassembly and installation.

[0019] The arcuate area of ​​the hook 4 corresponds to the arcuate groove 15 , and the arcuate groove 15 is located at the bottom side of the pressure plate 6 . The adaptability of the hanging connecting rope is increased by setting the arcuate groove 15 , and connecting ropes of different diameters can be obtained.

[0020] Among them, the hook 4 is in contact with the pressure ring 14, the pressure ring 14 is rotatably connected to the pressure plate 6 through the rotating shaft, and the strip hole 7 is located on the pressure plate 6. By setting the pressure ring 14, the auxiliary support of the hook 4 is increased, and the hook 4 is improved to stably connect the connecting rope.

[0021] The bottom side of the support plate 3 is fixedly connected to a reinforcing rib 16 , and the reinforcing rib 16 is fixedly connected to the upper side of the hook 4 . By providing the reinforcing rib 16 , the stability of the hook 4 can be increased.

[0022] Working principle: Move the insertion rod 9 so that the insertion rod 9 no longer limits the recess 8 of the hook 4, pull the protrusion 11 and the limiting rod 5, so that a gap is generated between one end of the hook 4 and the pressure plate 6, connect the rope body connected to the heavy object with the hook 4 and then release the limiting rod 5. Under the action of the spring 12, the pressure plate 6 closes one end of the hook 4. At this time, the insertion rod 9 is inserted into the recess of the hook 4, and the pneumatic hoist moves the connecting rope and the heavy object upward by winding up the chain. At this time, the insertion rod 9 receives the force of the spring 12 and the card plate 10 to generate friction, so that the insertion rod 9 is kept stable under force, so that the pneumatic hoist has an anti-slip effect when moving.

[0023] The above are only preferred implementations of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

[0024] Other parts of the present invention not described in detail belong to the prior art and will not be described in detail here.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An anti-drop hook for a pneumatic hoist, comprising a connecting plate (1), a fixing block (2) rotatably connected to the connecting plate (1), a chain fixedly connected to the upper end of the fixing block (2), characterized in that: The fixing block (2) is located at the bottom end of the connecting plate (1) and is fixedly connected to a supporting plate (3); a hook (4) is fixedly connected to one side of the bottom end of the supporting plate (3); four sides of the connecting plate (1) that are away from each other are all plugged with limiting rods (5); the upper end of the limiting rod (5) is fixedly connected to a protrusion (11); the bottom end of the protrusion (11) is fixedly connected to a spring (12) and the spring (12) is sleeved on the limiting rod (5); one end of the spring (12) is fixedly connected to the supporting plate (3); The connecting plate (1) is fixedly connected, the bottom end of the limiting rod (5) is fixedly connected with a pressing plate (6), a strip hole (7) is passed through the pressing plate (6) and the hook (4) is plugged into the strip hole (7), both sides of the hook (4) are provided with depressions (8), the hook (4) is located at the depression (8) and contacts with an insertion rod (9), one side of the insertion rod (9) is sleeved with a card plate (10), and the card plate (10) is fixedly connected to both sides of the bottom end of the connecting plate (1).

2. The anti-drop hook of a pneumatic hoist as claimed in claim 1, characterized in that: The pressing plate (6) is provided with a slot, and the pressing plate (6) is rotatably embedded with a ball (13) in the slot, and the ball (13) is in contact with the insertion rod (9).

3. The anti-drop hook of a pneumatic hoist as claimed in claim 2, characterized in that: An arc-shaped groove (15) is provided on the bottom side of the pressing plate (6), and the arc-shaped groove (15) corresponds to the arc-shaped area of ​​the hook (4).

4. The anti-drop hook of a pneumatic hoist as claimed in claim 3, characterized in that: The pressing plate (6) is located in the strip hole (7) and is rotatably connected to a pressing ring (14) via a rotating shaft, and the pressing ring (14) is in contact with the hook (4).

5. The anti-drop hook of a pneumatic hoist as claimed in claim 4, characterized in that: A reinforcing rib (16) is fixedly connected to the upper side of the hook (4), and the upper end of the reinforcing rib (16) is fixedly connected to the bottom side of the support plate (3).

Images