Crown block heavy punch limiting and accurate resetting device

Abstract

The utility model discloses a crown block heavy punch limiting and accurate resetting device, belongs to the technical field of crown block cranes, and solves the problem that faults are easy to cause when an existing crown block crane is reset. The resetting device comprises a heavy hammer limiting stopper installed on the crown block, a heavy hammer limiting rocker arm is hinged to the heavy hammer limiting stopper, a heavy hammer traction steel wire rope is arranged at one end of the heavy hammer limiting rocker arm, a heavy hammer weight is arranged at one end of the heavy hammer traction steel wire rope, a fixing rod is arranged below the heavy hammer weight, and the fixing rod is connected with the heavy hammer limiting rocker arm. The lower end of the fixing rod is connected with a crown block steel wire rope, and a lantern ring is arranged at the upper end of the fixing rod. According to the crown block heavy punch limiting and precise resetting device, the resetting precision is improved, the safety of equipment operation is effectively improved, and the crown block heavy punch limiting and precise resetting device has the advantages of being convenient to use and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of overhead cranes, in particular to an accurate reset device for the weight limit of an overhead crane. Background Art

[0002] At present, the overhead cranes all use a weight hammer connected to a weight limit switch through a weight steel wire rope to prevent the hoisting mechanism from overtopping. The existing weight reset process is that when the weight hammer gets stuck in the position of the moving pulley block of the spreader, the reset is considered complete. However, after multiple resets, the hammer may get stuck on the moving pulley block of the spreader or damage the spreader steel wire rope, thus causing faults and even mechanical or personal accidents, which will affect the normal operation of the overhead crane. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide an accurate reset device for the weight limit of an overhead crane aiming at the above deficiencies of the prior art, which can improve the accuracy of reset, effectively improve the safety of equipment operation, and has the characteristics of convenient use and strong practicability.

[0004] The technical solution adopted by the utility model is: an accurate reset device for the weight limit of an overhead crane, which includes a weight limiter installed on the overhead crane. A weight limit rocker arm is hinged on the weight limiter. One end of the weight limit rocker arm is provided with a weight traction steel wire rope. One end of the weight traction steel wire rope is provided with a weight hammer. A fixed rod is arranged below the weight hammer. The lower end of the fixed rod is connected to the overhead crane steel wire rope, and the upper end of the fixed rod is provided with a collar.

[0005] As a further improvement, the fixed rod is arranged at the first wire clip of the moving pulley block of the spreader, and the fixed rod is installed on the overhead crane steel wire rope through a second wire clip.

[0006] Furthermore, the collar is sleeved on the overhead crane steel wire rope, and the collar is arranged directly below the weight hammer.

[0007] Furthermore, the fixed rod includes a sleeve rod and an insertion rod. The lower end of the sleeve rod is connected to the second wire clip. The lower end of the insertion rod is movably inserted into the upper end of the sleeve rod. The upper end of the insertion rod is connected to the collar. A locking piece is arranged between the sleeve rod and the insertion rod.

[0008] Furthermore, the locking piece is a locking screw, and the locking screw is threadedly connected to the sleeve rod radially.

[0009] Furthermore, the inner diameter of the collar is smaller than the outer diameter of the weight hammer.

[0010] Advantageous Effects

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] A precise reset device for the weight limit of an overhead crane of the present utility model is provided. By installing a fixed rod at the first rope clip of the moving pulley group of the sling, the fixed rod is vertically tightened by the second rope clip to prevent it from shaking. The length of the fixed rod can be determined according to the on-site height requirements and adjusted by adjusting the extended length of the insertion rod, so as to meet different installation heights. When the weight of the weight touches the collar, the collar is effectively limited under the action of the weight of the weight, thereby achieving precise reset. At this time, the mechanism stops working to ensure that the weight of the overhead crane is in the accurate position, so as to ensure the stability, safety and lifting capacity of the overhead crane. At the same time, it also helps to extend the service life of the equipment and avoid mechanical or personal accidents caused thereby. The action is sensitive and reliable, the structure is simple and the layout does not occupy space, and it has the characteristics of convenient use and wide application range. Description of the Drawings

[0013] Figure 1 It is the front view structural schematic diagram of the present utility model;

[0014] Figure 2 It is the structural schematic diagram during the actual application of the present utility model.

[0015] Wherein: 1 - overhead crane, 2 - weight limiter, 3 - fixed rod, 4 - weight limit swing arm, 5 - weight of the weight, 6 - overhead crane steel wire rope, 7 - collar, 8 - weight traction steel wire rope, 9 - second rope clip, 10 - first rope clip, 11 - moving pulley group of the sling, 31 - insertion rod, 32 - sleeve rod, 33 - locking screw. Detailed Embodiment

[0016] The following further describes the present utility model with specific embodiments in the drawings.

[0017] Refer to Figure 1-2As shown in the figure, a precise reset device for the weight limit of an overhead crane of the present utility model includes a weight limiter 2 installed on the overhead crane 1. A weight limit rocker arm 4 is hinged to the weight limiter 2. One end of the weight limit rocker arm 4 is provided with a weight traction steel wire rope 8. One end of the weight traction steel wire rope 8 is provided with a weight hammer 5. A fixed rod 3 is provided below the weight hammer 5. The lower end of the fixed rod 3 is connected to the overhead crane steel wire rope 6. The upper end of the fixed rod 3 is provided with a collar 7. By installing the fixed rod 3 at the first rope clamp 10 of the hoist movable pulley block 11, the fixed rod 3 is vertically tied tightly by the second rope clamp 9 so that it cannot shake. The length of the fixed rod 3 can be determined according to the on-site height requirements and adjusted by adjusting the extended length of the insertion rod 31 to meet different installation heights. When the weight hammer 5 touches the collar 7, the collar 7 is effectively limited under the action of the weight hammer 5, so as to achieve precise reset. At this time, the mechanism stops working, ensuring that the overhead crane weight is in an accurate position, to ensure the stability, safety and lifting capacity of the overhead crane 1, and at the same time, it also helps to extend the service life of the equipment, avoid mechanical or personal accidents caused thereby, with sensitive and reliable actions and a simple structure that does not occupy space.

[0018] Specifically, the fixed rod 3 is arranged at the first rope clamp 10 of the hoist movable pulley block 11. The fixed rod 3 is installed on the overhead crane steel wire rope 6 through the second rope clamp 9, so that the fixed rod 3 can be firmly tied to the overhead crane steel wire rope 6 and will not tilt after being stressed, ensuring the normal use of the device.

[0019] Preferably, the collar 7 is sleeved on the overhead crane steel wire rope 6 and the collar 7 is arranged directly below the weight hammer 5, so that the collar 7 is just effectively limited by the weight hammer 5, thus achieving precise limitation and improving the safety of the lifting operation.

[0020] Furthermore, the fixed rod 3 includes a sleeve rod 32 and an insertion rod 31. The lower end of the sleeve rod 32 is connected to the second rope clamp 9. The lower end of the insertion rod 31 is movably inserted into the upper end of the sleeve rod 32. The upper end of the insertion rod 31 is connected to the collar 7. A locking member is provided between the sleeve rod 32 and the insertion rod 31. The extended length of the insertion rod 31 is adjusted to meet different installation heights, increasing the practicality.

[0021] Furthermore, the locking member is a locking screw 33. The locking screw 33 is threadedly connected to the sleeve rod 32 radially. The insertion rod 31 is locked to the sleeve rod 32 by the locking screw 33, which is convenient for adjusting the length.

[0022] Furthermore, the inner diameter of the collar 7 is smaller than the outer diameter of the weight hammer 5, so that the weight hammer 5 can block the collar 7 and play a role in limiting.

[0023] When a precise reset device for the overhead crane heavy hammer limit in this embodiment is in use, a fixing rod 3 is installed at the first rope clip 10 of the moving pulley block 11 of the spreader. The fixing rod 3 is vertically tightened by the second rope clip 9 to prevent it from shaking. The length of the fixing rod 3 can be determined according to the on-site height requirements and adjusted by adjusting the extended length of the insertion rod 31 to meet different installation heights. When the heavy hammer weight 5 touches the collar 7, the collar 7 is effectively limited under the action of the heavy hammer weight 5, thereby achieving precise reset. At this time, the mechanism stops working to ensure that the overhead crane heavy hammer is in an accurate position, so as to ensure the stability, safety and lifting capacity of the overhead crane 1. At the same time, it also helps to extend the service life of the equipment and avoid mechanical or personal accidents caused thereby. The action is sensitive and reliable, and the structure is simple and does not occupy space. A precise reset device for the overhead crane heavy hammer limit of the present utility model improves the precision of reset, effectively improves the safety of equipment operation, and has the characteristics of convenient use and strong practicability.

[0024] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those skilled in the art, without departing from the structure of the present utility model, several deformations and improvements can be made, which will not affect the implementation effect of the present utility model and the practicability of the patent.

Claims

1. A precise reset device for the weight limit of an overhead crane, characterized in that, It includes a weight limiter (2) installed on the overhead crane (1). A weight limit rocker arm (4) is hinged on the weight limiter (2). One end of the weight limit rocker arm (4) is provided with a weight traction steel wire rope (8). One end of the weight traction steel wire rope (8) is provided with a weight bob (5). A fixed rod (3) is arranged below the weight bob (5). The lower end of the fixed rod (3) is connected to the overhead crane steel wire rope (6). The upper end of the fixed rod (3) is provided with a collar (7).

2. The precision reset device for the overhead crane heavy hammer limit according to claim 1, characterized in that, The fixed rod (3) is arranged at the first wire clip (10) of the hoist movable pulley block (11). The fixed rod (3) is installed on the overhead crane steel wire rope (6) through a second wire clip (9).

3. The precise reset device for the overhead crane weight limit according to claim 1, characterized in that, The collar (7) is sleeved on the overhead crane steel wire rope (6), and the collar (7) is arranged directly below the weight bob (5).

4. The precision reset device for the overhead crane weight limit according to claim 2, characterized in that, The fixed rod (3) includes a sleeve rod (32) and an insertion rod (31). The lower end of the sleeve rod (32) is connected to the second wire clip (9). The lower end of the insertion rod (31) is movably inserted into the upper end of the sleeve rod (32). The upper end of the insertion rod (31) is connected to the collar (7). A locking member is arranged between the sleeve rod (32) and the insertion rod (31).

5. The precision reset device for the overhead crane weight limit according to claim 4, characterized in that, The locking member is a locking screw (33). The locking screw (33) is threadedly connected to the sleeve rod (32) radially.

6. The precision reset device for the overhead crane weight limit according to claim 1, wherein, The inner diameter of the collar (7) is smaller than the outer diameter of the weight bob (5).

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