Steel wire rope anti-drop blocking device

Abstract

The utility model relates to a steel wire rope anti-drop blocking device which comprises a first sleeve fixed above a hook opening and fixedly connected with a hook body, a front frame rotationally connected with the first sleeve and a rear frame fixedly connected with the front frame, the front frame comprises a connecting part and a blocking part, the connecting part is inserted into the first sleeve, and the blocking part is inserted into the first sleeve. The blocking part can freely swing in the hook opening, the rear frame is located on the rear side of the hook body and comprises a connecting rod connected with the connecting part and a load bearing part fixed to the rear end of the connecting rod, a pull rope is connected to the load bearing part, and the front portion of the pull rope is bound to the position, above the first sleeve, of the hook body. The full-closed state can be achieved, the rotation amplitude of the front frame can be controlled through the pull rope, the semi-open state can be achieved, the connecting piece can be conveniently placed in the hook, the collision probability of the connecting piece and the front frame is reduced, and therefore the overall service life is prolonged.

Description

Technical Field

[0001] The utility model relates to a blocking device, in particular to a wire rope anti-detachment blocking device which is installed on a hook and can prevent the wire rope from escaping from an opening of the hook. Background Art

[0002] Power plants often use overhead cranes to lift heavy objects. The hook on the crane serves as the lifting point for the load. To lift the object, the crane is connected to the object via a connector (such as a wire rope, steel cable, or chain). A drive mechanism is then activated to retract the traction rope connected to the upper end of the hook, causing the hook to move upward and horizontally. During this movement, the object tends to sway, and particularly at the start and stop of the hook's horizontal movement, the connector can easily fall out of the hook opening. Therefore, conventional techniques employ a blocking device at the hook opening.

[0003] Most existing blocking devices feature a fixed shaft mounted on the hook body above the hook opening. A card is hinged to the fixed shaft, and a torsion spring is sleeved onto the fixed shaft. The card closes the hook opening using the spring's elastic force. When the operator manually pushes the card open and inserts the wire rope (connector), the card, under the action of the torsion spring, seals the hook opening again, preventing the wire rope from escaping from the hook opening. A disadvantage of this blocking device structure is that after frequent or inaccurate use over a period of time, the card's inherent fragility can easily cause it to become skewed and deformed under the repeated impact of the wire rope and human force. This can cause the hinge shaft to deflect and deform, and the torsion spring sleeved on the hinge shaft to deflect and deform, weakening the spring's elastic force and ultimately reducing the card's ability to reposition. Furthermore, once the card and torsion spring become deformed and damaged, they can hinder the proper insertion and removal of the connector, making repair difficult and requiring replacement. Therefore, in actual use, in order to avoid the above situation that may affect the operation, the staff will directly remove the card, which will result in the hook lacking a blocking device, and the equipment and personal safety cannot be guaranteed.

[0004] Therefore, it is now necessary to design a blocking device with simple structure and high reliability. Summary of the Invention

[0005] The utility model provides a wire rope anti-falling blocking device which is reliable, has a blocking effect that is difficult to fail, and is convenient to hang and take out.

[0006] The purpose of the present application is achieved as follows: a wire rope anti-slip blocking device includes a first sleeve fixed above the hook opening and fixedly connected to the hook body, a front frame rotatably connected to the first sleeve, and a rear frame fixedly connected to the front frame. The front frame includes a connecting part and a blocking part. The connecting part is inserted into the first sleeve, and the blocking part can swing freely in the hook opening. The rear frame is located on the rear side of the hook body, and includes a connecting rod connected to the aforementioned connecting part and a weight-bearing part fixed at the rear end of the connecting rod. A pull rope is connected to the weight-bearing part, and the front part of the pull rope is tied to the hook body above the first sleeve.

[0007] The front frame is a square frame, the rear end cross bar is the connecting part, the front end cross bar is the blocking part, the connecting part and the blocking part are connected by a connecting rod, the cross bar passes through the first sleeve, and the two sides of the cross bar extend out of the first sleeve to form an extension part.

[0008] The front frame is triangular and includes a cross bar. The cross bar is inserted into the first sleeve as a connecting part. The first sleeve extends out of the cross bar on both sides to form an extension part. Two side bars are integrally connected at both ends of the cross bar. The front ends of the two side bars are integrally connected to form a blocking part.

[0009] The front frame is annular and includes a cross bar, which is inserted into the first sleeve as a connecting part. Both sides of the cross bar extend out of the first sleeve to form an extension part. An annular rod is integrally connected to both ends of the cross bar, and the annular rod serves as a blocking part.

[0010] A plurality of spaced grooves are provided on the circumferential surface of the protruding portion along its circumference. A second sleeve is sleeved on the protruding portions on the left and right sides. A plurality of screw holes corresponding to the aforementioned grooves are provided along the circumference of the second sleeve. Positioning bolts are screwed into the screw holes, and the inner ends of the positioning bolts can be inserted into the grooves.

[0011] The rear frame includes two connecting rods, and a weight-bearing part is connected between the rear ends of the two connecting rods. Tie points are set on both sides of the weight-bearing part, and pull ropes are tied to the two tie points. The front ends of the two pull ropes are connected after passing through the hook body; the front ends of the two connecting rods are respectively fixedly connected to the corresponding second sleeves.

[0012] This application eliminates the need for torsion spring control. Instead, a front frame positioned on the hook opening side and a rear frame positioned on the hook's backside are hingedly connected above the hook opening to form a lever structure. The rear frame's own weight controls the front frame's self-closing of the hook opening. This approach not only achieves a fully closed state, but also allows for a semi-open state, facilitating the placement of connectors into the hook and reducing the chance of collision between the connector and the front frame, thereby extending the overall service life. This application features a simple structure, easy operation, and ease of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The specific structure of this application is given by the following drawings and examples:

[0014] Attachment Figure 1 It is a schematic diagram of the top structure of this application;

[0015] Attachment Figure 2 It is a side view structural diagram of the present application;

[0016] Attachment Figure 3 This is a schematic diagram of the structure of the present application when the connecting member pushes the front frame open and hooks it;

[0017] Attachment Figure 4 It is a schematic diagram of the structure of the present application when the connecting piece has entered the hook.

[0018] Legend: 1. Tie point, 2. Rear frame, 3. Second sleeve, 4. Groove, 5. First sleeve, 6. Front frame, 7. Pull rope, 8. Positioning bolt, 9. Hook body, 10. Connector. DETAILED DESCRIPTION

[0019] The present application is not limited to the following embodiments, and the specific implementation method can be determined according to the technical solution of the present application and actual conditions.

[0020] In this utility model, for the convenience of description, the relative position relationship of each component is described based on the Figure 1 For example, the positional relationships of top, bottom, left, and right are based on the layout of the instructions. Figure 1 The layout direction is determined by the

[0021] The present invention will be further described below in conjunction with the embodiments and drawings. Figure 1-4 As shown, the wire rope anti-slip blocking device includes a first sleeve 5 fixed above the hook opening and fixedly connected to the hook body 9, a front frame 6 rotatably connected to the first sleeve 5, and a rear frame 2 fixedly connected to the front frame 6. The front frame 6 includes a connecting part and a blocking part. The connecting part is inserted into the first sleeve 5, and the blocking part can swing freely in the hook opening. The rear frame 2 is located on the rear side of the hook body, and includes a connecting rod connected to the aforementioned connecting part and a weight-bearing part fixed at the rear end of the connecting rod. A pull rope 7 is connected to the weight-bearing part, and the front part of the pull rope 7 is tied to the hook body above the first sleeve 5.

[0022] Further, such as Figure 2As shown, the front frame 6 is a square frame, with a rear crossbar serving as a connecting portion and a front crossbar serving as a blocking portion. The connecting portion and the blocking portion are connected by connecting rods. The crossbar passes through the first sleeve 5, and the two sides of the crossbar extend out of the first sleeve 5 to form extensions. The circumferential surface of the extension is provided with a plurality of spaced grooves along its circumference. The left and right extensions are sleeved with second sleeves 3. A plurality of screw holes corresponding to the aforementioned grooves are provided along the circumference of the second sleeve 3. Positioning bolts are screwed into the screw holes, and the inner ends of the positioning bolts can be inserted into the grooves. The rotation angle of the second sleeve 3 can be adjusted by the mating connection between the positioning bolts and the grooves.

[0023] Further, such as Figure 1 、 2 As shown, the rear frame 2 includes two connecting rods, with a weight-bearing portion connected between their rear ends. Tie points 1 are provided on either side of the weight-bearing portion. Drawstrings 7 are tied to the tie points 1. The front ends of the two drawstrings 7 pass through the hook body and then connect. The front ends of the two connecting rods are fixedly connected to corresponding second sleeves 3. Adjusting the rotation angle of the second sleeves 3 adjusts the angle between the rear frame 2 and the front frame 6.

[0024] When the present application is in use, the angle between the rear frame 2 and the front frame 6 is adjusted according to different hooks, so that when the load-bearing part of the rear frame 2 contacts the rear side of the hook body, the blocking part of the front frame 6 just contacts the inner wall of the hook opening, thereby closing the hook opening through the blocking part. After adjusting the angle between the rear frame 2 and the front frame 6, the connecting piece 10 can be placed into the hook opening, as shown in FIG. Figure 3 As shown, during the insertion process, the connector 10 will push the front frame 6 to rotate, thereby opening an opening for the connector to enter. At this time, the rear frame 2 rotates upward along with the rotation of the front frame 6, separating from the hook body 9. After the connector 10 passes over the front frame and enters the hook opening, the front frame 6 is no longer affected by external forces. At this time, the rear frame 2 rotates downward under the action of its own weight, driving the front frame 6 to rotate in the opposite direction until the blocking portion of the front frame 6 just contacts the inner wall of the hook opening, thereby closing the hook opening and allowing the connector 10 to be disengaged.

[0025] In the present application, the front frame 6 can also be of other shapes. The front frame 6 is triangular and includes a cross bar. The cross bar is inserted into the first sleeve 5 as a connecting part. The first sleeve 5 extends out from both sides of the cross bar. Two side bars are integrally connected at both ends of the cross bar, and the front ends of the two side bars are integrally connected to form a blocking part.

[0026] The circumferential surface of the extension is provided with a plurality of grooves 4 spaced apart along its circumference. A second sleeve 3 is sleeved on both the left and right extensions. A plurality of screw holes corresponding to the aforementioned grooves 4 are provided along the circumference of the second sleeve 3. Positioning bolts 8 are screwed into the screw holes, and the inner ends of the positioning bolts 8 can extend into the aforementioned grooves 4. The rotation angle of the second sleeve 3 can be adjusted by the mating connection between the positioning bolts 8 and the grooves 4.

[0027] In the present application, the front frame 6 can also be of other shapes. The front frame 6 is annular and includes a cross bar, which is inserted into the first sleeve 5 as a connecting part. The first sleeve 5 extends out of both sides of the cross bar, and an annular rod is integrally connected to both ends of the cross bar, and the annular rod serves as a blocking part.

[0028] The circumferential surface of the extension is provided with a plurality of grooves 4 spaced apart along its circumference. A second sleeve 3 is sleeved on both the left and right extensions. A plurality of screw holes corresponding to the aforementioned grooves 4 are provided along the circumference of the second sleeve 3. Positioning bolts 8 are screwed into the screw holes, and the inner ends of the positioning bolts 8 can extend into the aforementioned grooves 4. The rotation angle of the second sleeve 3 can be adjusted by the mating connection between the positioning bolts 8 and the grooves 4.

[0029] In order to ensure that the rear frame has sufficient weight and prevent the rear frame from jumping when the hook shakes, which will cause the front frame to be less closed, a weight block can be fixed on the weight-bearing part to increase the weight of the rear frame.

[0030] The above description is merely an example to clearly illustrate the present application, and is not intended to limit the implementation of the present application. Any obvious changes or modifications derived from the technical solution of the present application are still within the scope of protection of the present application.

Claims

1. The wire rope anti-falling blocking device is characterized by: It includes a first sleeve fixed above the hook opening and fixedly connected to the hook body, a front frame rotatably connected to the first sleeve, and a rear frame fixedly connected to the front frame. The front frame includes a connecting part and a blocking part. The connecting part is inserted into the first sleeve, and the blocking part can swing freely in the hook opening. The rear frame is located on the rear side of the hook body and includes a connecting rod connected to the aforementioned connecting part and a weight-bearing part fixed at the rear end of the connecting rod. A pull rope is connected to the weight-bearing part, and the front part of the pull rope is tied to the hook body above the first sleeve.

2. The wire rope anti-falling blocking device according to claim 1, characterized in that: The front frame is a square frame, the rear end cross bar is the connecting part, the front end cross bar is the blocking part, the connecting part and the blocking part are connected by a connecting rod, the cross bar passes through the first sleeve, and the two sides of the cross bar extend out of the first sleeve to form an extension part.

3. The wire rope anti-falling blocking device according to claim 1, characterized in that: The front frame is triangular and includes a cross bar. The cross bar is inserted into the first sleeve as a connecting part. The first sleeve extends out of the cross bar on both sides to form an extension part. Two side bars are integrally connected at both ends of the cross bar. The front ends of the two side bars are integrally connected to form a blocking part.

4. The wire rope anti-falling blocking device according to claim 1, characterized in that: The front frame is annular and includes a cross bar, which is inserted into the first sleeve as a connecting part. Both sides of the cross bar extend out of the first sleeve to form an extension part. An annular rod is integrally connected to both ends of the cross bar, and the annular rod serves as a blocking part.

5. The wire rope anti-falling blocking device according to claim 2, 3 or 4, characterized in that: A plurality of spaced grooves are provided on the circumferential surface of the protruding portion along its circumference. A second sleeve is sleeved on the protruding portions on the left and right sides. A plurality of screw holes corresponding to the aforementioned grooves are provided along the circumference of the second sleeve. Positioning bolts are screwed into the screw holes, and the inner ends of the positioning bolts can be inserted into the grooves.

6. The wire rope anti-falling blocking device according to claim 1, characterized in that: The rear frame includes two connecting rods, and a weight-bearing part is connected between the rear ends of the two connecting rods. Tie points are set on both sides of the weight-bearing part, and pull ropes are tied to the two tie points. The front ends of the two pull ropes are connected after passing through the hook body; the front ends of the two connecting rods are respectively fixedly connected to the corresponding second sleeves.

7. The wire rope anti-fall-off blocking device according to claim 5, characterized in that: The rear frame includes two connecting rods, and a weight-bearing part is connected between the rear ends of the two connecting rods. Tie points are set on both sides of the weight-bearing part, and pull ropes are tied to the two tie points. The front ends of the two pull ropes are connected after passing through the hook body; the front ends of the two connecting rods are respectively fixedly connected to the corresponding second sleeves.

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