Anti-falling lock plate pull rope switch of crane

Abstract

The utility model discloses an anti-falling locking plate pull rope switch of a crane. The anti-falling locking plate pull rope switch comprises a lifting hook, the top end of the anti-falling locking plate is rotationally mounted on the lifting hook, the bottom end of the anti-falling locking plate is a free end, and the opening of the lifting hook is sealed by the anti-falling locking plate; the guide plate is mounted on the rear side of the lifting hook; one end of the pull rope is connected with the side edge of the bottom end of the anti-falling locking piece, the other end of the pull rope is connected with the guide plate in a penetrating mode, in the using process, the anti-falling locking piece rotates towards the interior of the lifting hook by pulling the pull rope, so that the opening of the lifting hook is not closed by the anti-falling locking piece any more, and the opening purpose is achieved; the spring-back sealing can be realized through a torsion spring arranged in the anti-falling locking plate; according to the design of the utility model, the stay cord switch is adopted to replace personnel to operate by using a stay bar, so that the risk of mistakenly touching the remote control machine of the crane is reduced, the problem of inconvenience in operation of personnel is eliminated, and meanwhile, the operation standard safety and the safety sense of the personnel are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-dropout lock pieces for cranes, and in particular relates to a pull rope switch for an anti-dropout lock piece for cranes. Background Art

[0002] A crane is a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. It is also called an overhead crane, overhead crane, or crane. The crane hook is subject to the force exerted on the lifting rope during the lifting process, which can easily cause the rope to swing and fall off the hook. Therefore, an anti-drop lock piece is installed on the hook to block the lifting rope or chain and prevent it from falling off.

[0003] However, the current factory design of cranes does not have a method for switching the anti-slip lock plate, and it can only be switched manually. Therefore, when hanging and unloading the spreader, the crane operator basically uses one hand to operate the remote control and the other hand to use the support rod to switch the anti-slip lock plate. During the entire operation, once the operator operates the remote control incorrectly or touches the remote control by mistake, the support rod may slip when the operator uses the support rod to switch the anti-slip lock plate, causing the risk of the arm becoming unbalanced and tilting, thereby causing the risk of the equipment colliding with the spreader or the material tipping over. Utility Model Content

[0004] The utility model aims to provide a crane anti-drop lock plate pull rope switch to solve the problem in the above background technology that the crane factory design does not have an anti-drop lock plate switch method, which may cause the risk of equipment colliding with the sling or material dumping due to accidental touch.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a crane anti-drop lock plate pull rope switch, comprising a hook; an anti-drop lock plate, the top end of which is rotatably installed on the hook and the bottom end is a free end, and the anti-drop lock plate closes the opening of the hook; it also includes a guide plate installed on the rear side of the hook; a pull rope, one end of which is connected to the side of the bottom end of the anti-drop lock plate, and the other end is connected through the guide plate. During use, the anti-drop lock plate is rotated toward the inside of the hook by pulling the pull rope, so that the opening of the hook is no longer closed by the anti-drop lock plate, thereby achieving the purpose of opening, and when the pull rope is loosened, the rebound closure can be achieved through the torsion spring built into the anti-drop lock plate, and the guide plate can support and guide the pull rope to avoid the phenomenon of the pull rope scattering.

[0006] Preferably, a connecting hole is provided at the top of the surface of the guide plate, a bolt fixed to the rear side of the hook passes through the connecting hole, and a guide hole for the pull rope to pass through is provided at the bottom of the surface of the guide plate.

[0007] Preferably, the guide hole is stepped, and a plurality of balls are placed in the guide hole. The ball portion protrudes into the interior of the guide hole. A tightening ring is also provided inside the guide hole. The inner side surface of the tightening ring is provided with annular grooves equal to the number of balls. The annular grooves are partially fitted with the protruding area of ​​the balls. The inner diameter of the annular grooves is smaller than the ball diameter of the balls, so that the balls can be limited by the annular grooves. At the same time, when the pull rope passes through the guide hole, once it contacts the balls, the friction can be reduced by rolling to facilitate pulling.

[0008] Preferably, the guide plate and the clamping ring are provided with limiting holes, and connecting bolts are screwed into the limiting holes. The ends of the connecting bolts abut against the guide plate and the clamping ring, thereby achieving limiting installation of the guide plate and the clamping ring.

[0009] Preferably, a through hole is provided on the bottom side of the anti-detachment locking plate, and one end of the pull rope passes through the through hole and is knotted and locked on the anti-detachment locking plate, thereby achieving the installation of the pull rope and the anti-detachment locking plate.

[0010] Preferably, the inner length and width of the through hole are both greater than the diameter of the pull rope, and the through hole is rectangular, so as to facilitate the through-installation of the pull rope.

[0011] Preferably, a torsion spring is also provided at the connection between the anti-detachment lock plate and the hook, so that the anti-detachment lock plate can rebound toward the outside of the hook through the torsion spring, and the bottom end of the anti-detachment lock plate abuts against the inner wall of the opening bottom of the hook to prevent the anti-detachment lock plate from popping out to the outside of the hook.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. Eliminate the risk of accidental physical contact and accidental operation of the remote control by a person operating the remote control with one hand and using the support rod with the other hand to move the anti-drop lock plate;

[0014] 2. When the substitute uses the pole to move the anti-drop lock plate, there is a risk that the pole may slip and the arm may become unbalanced and tilted;

[0015] 3. The use of the crane anti-drop lock pull rope switch improves the ultimate goal of personnel safety, equipment safety, and environmental safety.

[0016] In summary, through the design of the utility model, a pull rope switch is used to replace the use of a support rod by personnel, thereby reducing the risk of accidental touching of the crane remote control machine, eliminating the problem of inconvenience in personnel operation, and at the same time improving the safety of operating specifications and the sense of security of employees. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the guide plate of the utility model;

[0019] Figure 3 It is a partial schematic diagram of the guide plate of the utility model;

[0020] Figure 4 It is a rear view of the anti-dropping lock piece of the utility model.

[0021] In the figure: 100, hook; 101, anti-drop lock plate; 101a, through hole; 102, guide plate; 102a, connecting hole; 102b, guide hole; 103, pull rope; 104, connecting bolt; 105, ball bearing; 106, limit hole; 107, tightening ring; 107a, ring groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 4 The utility model provides a technical solution: a crane anti-drop lock sheet pull rope switch, comprising

[0024] Hook 100;

[0025] The anti-drop lock piece 101 has a top end rotatably mounted on the hook 100 and a bottom end that is a free end. The anti-drop lock piece 101 closes the opening of the hook 100;

[0026] Also includes

[0027] A guide plate 102 is installed on the rear side of the hook 100;

[0028] One end of the pull rope 103 is connected to the bottom side of the anti-detachment locking plate 101, and the other end is connected to the guide plate 102. During use, the pull rope 103 is pulled to rotate the anti-detachment locking plate 101 toward the inside of the hook 100, so that the opening of the hook 100 is no longer closed by the anti-detachment locking plate 101, thereby achieving the purpose of opening. When the pull rope 103 is loosened, the anti-detachment locking plate 101 can rebound and close by the torsion spring built into the anti-detachment locking plate 101, and the guide plate 102 can support and guide the pull rope 103 to prevent the pull rope 103 from falling off.

[0029] In this embodiment, preferably, a connecting hole 102a is provided at the top of the surface of the guide plate 102, a bolt fixed to the rear side of the hook 100 passes through the connecting hole 102a, and a guide hole 102b for the pull rope 103 to pass through is provided at the bottom of the surface of the guide plate 102.

[0030] In this embodiment, preferably, the guide hole 102b is stepped, and a plurality of balls 105 are placed in the guide hole 102b. The balls 105 partially protrude into the interior of the guide hole 102b. A tightening ring 107 is also provided inside the guide hole 102b. The inner side surface of the tightening ring 107 is provided with annular grooves 107a equal to the number of the balls 105. The annular grooves 107a are partially fitted with the protruding areas of the balls 105. The inner diameter of the annular grooves 107a is smaller than the ball diameter of the balls 105, so that the balls 105 can be limited by the annular grooves 107a. At the same time, when the pull rope 103 passes through the guide hole 102b, once it contacts the balls 105, the friction can be reduced by rolling to facilitate pulling.

[0031] In this embodiment, preferably, a limiting hole 106 is provided on the guide plate 102 and the clamping ring 107, and a connecting bolt 104 is screwed into the limiting hole 106. The end of the connecting bolt 104 abuts against the guide plate 102 and the clamping ring 107, thereby realizing the limiting installation of the guide plate 102 and the clamping ring 107.

[0032] In this embodiment, preferably, a through hole 101a is opened on the bottom side of the anti-detachment locking plate 101, and one end of the pull rope 103 passes through the through hole 101a and is knotted and locked on the anti-detachment locking plate 101, thereby achieving the installation of the pull rope 103 and the anti-detachment locking plate 101.

[0033] In this embodiment, preferably, the inner length and width of the through hole 101 a are greater than the diameter of the pull rope 103 , and the through hole 101 a is rectangular, so as to facilitate the through-installation of the pull rope 103 .

[0034] In the present embodiment, preferably, a torsion spring is further provided at the connection between the anti-detachment lock plate 101 and the hook 100, so that the anti-detachment lock plate 101 can rebound toward the outside of the hook 100 through the torsion spring, and the bottom end of the anti-detachment lock plate 101 abuts against the inner wall of the opening bottom of the hook 100, thereby preventing the anti-detachment lock plate 101 from popping out to the outside of the hook 100.

[0035] Although the embodiments of the present invention have been shown and described (see the above detailed description for details), it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Crane anti-drop lock pull rope switch, including Hook (100); An anti-drop lock piece (101), the top end of which is rotatably mounted on the hook (100) and the bottom end of which is a free end, and the anti-drop lock piece (101) closes the opening of the hook (100); Features: Also includes A guide plate (102) installed on the rear side of the hook (100); A pull rope (103) has one end connected to the bottom side of the anti-drop lock plate (101), and the other end connected through the guide plate (102).

2. The crane anti-drop lock piece pull rope switch according to claim 1, characterized in that: A connecting hole (102a) is provided at the top of the surface of the guide plate (102), a bolt fixed to the rear side of the hook (100) passes through the connecting hole (102a), and a guide hole (102b) for the pull rope (103) to pass through is provided at the bottom of the surface of the guide plate (102).

3. The crane anti-drop lock piece pull rope switch according to claim 2, characterized in that: The guide hole (102b) is in a step shape. A plurality of balls (105) are placed in the guide hole (102b). Parts of the balls (105) protrude into the interior of the guide hole (102b). A clamping ring (107) is also arranged inside the guide hole (102b). The inner side surface of the clamping ring (107) is provided with annular grooves (107a) equal in number to the number of the balls (105). The annular grooves (107a) are partially fitted with the protruding areas of the balls (105). The inner diameter of the annular grooves (107a) is smaller than the ball diameter of the balls (105).

4. The crane anti-drop lock piece pull rope switch according to claim 3, characterized in that: The guide plate (102) and the clamping ring (107) are both provided with a limiting hole (106), a connecting bolt (104) is screwed into the limiting hole (106), and the end of the connecting bolt (104) is in contact with the guide plate (102) and the clamping ring (107).

5. The crane anti-drop lock piece pull rope switch according to claim 1, characterized in that: A through hole (101a) is provided on the bottom side of the anti-dropping lock plate (101), and one end of the pull rope (103) passes through the through hole (101a) and is knotted and locked on the anti-dropping lock plate (101).

6. The crane anti-drop lock sheet pull rope switch according to claim 5, characterized in that: The inner length and width of the through hole (101a) are both greater than the diameter of the pull rope (103), and the through hole (101a) is rectangular.

7. The crane anti-drop lock sheet pull rope switch according to claim 5, characterized in that: A torsion spring is also provided at the connection between the anti-drop lock piece (101) and the hook (100), and the bottom end of the anti-drop lock piece (101) abuts against the inner wall of the bottom opening of the hook (100).

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