CN101913525B

CN101913525B - Safe locking device for container spreader

Info

Publication number: CN101913525B
Application number: CN201010221134A
Authority: CN
Inventors: 吴丰员; 吴舒曼
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-03
Filing date: 2010-07-03
Publication date: 2012-10-10
Anticipated expiration: 2030-07-03
Also published as: CN101913525A

Abstract

The invention relates to a safe locking device for a container spreader and belongs to the technical field of container spreader structures. The safe locking device for the container spreader is matched with a triangular swing arm arranged on a spreader frame and a four-bar mechanism and is characterized by comprising a two-direction limiting plate arranged on the spreader frame, wherein the two-direction limiting plate is positioned on one side surface of the triangular swing arm; crank shafts are inserted into a lower side of two ends of a triangular swing arm sliding way respectively; one end of the crank shaft is provided with a pawl which is linked with the crank shaft and is positioned on the inner side of the triangular swing arm and the end part of the crank shaft is used for pressing against a pawl of a counter weight; the other end of the crank shaft positioned on the outer side of the triangular swing arm is connected with a crank through a key; a drum shaft is connected with the crank; one end of the drum shaft is matched with the two-direction limiting plate for limiting; one end of a tension spring is fixedly connected to a tension spring fixed shaft arranged on the crank, while the other end is fixedly connected to a tension spring fixed shaft arranged on the triangular swing arm; and a pressure plate is arranged between the outer side of the triangular swing arm and the crank shaft. The safe locking device for the container spreader has the advantages of preventing the container from falling in the air during use and efficiently guaranteeing personal security and good condition of wares, along with safe and reliable operation.

Description

A kind of safe locking device for container spreader

Technical field

The present invention relates to the safe locking device that a kind of container spreader is used, belong to container spreader unit construction technical field.

Background technology

At present; The employed rotating lock mechanism form of simple and easy container spreader has multiple, and △ type Swing Arm mode is wherein comparatively common a kind of, is not equipped with the installation safe locking device; Following two kinds of situation can appear in the possibility of result: the one, and misoperation can appear; The 2nd, it is unreliable to move, and causes freight container to come off aloft, thereby has a strong impact on the safety of the person or shipping goods.

Summary of the invention

Technical matters to be solved by this invention is the safe locking device that provides a kind of safety of operation failure-free container spreader to use.

The present invention realizes through following technical scheme:

The safe locking device that a kind of container spreader is used; Be used with the △ type Swing Arm 6 and the four-bar linkage 3 that are installed on the duel spreader frames 1; Its special character is to comprise the bidirectionally limited plate 1-1 that is fixed on the duel spreader frames 1; Bidirectionally limited plate 1-1 is positioned at △ type Swing Arm 6 sides, and △ type Swing Arm 6 chute two ends downsides are fitted with crankshaft 6-6 respectively, crankshaft 6-6 one end be provided with its interlock be positioned at △ type Swing Arm 6 inboards and the end is used for the ratchet 6-2 against weight 7; The other end that crankshaft 6-6 is positioned at △ type Swing Arm 6 outsides is connected with crank 6-4 through key 6-5; Be connected with drum shaft 6-8 on the crank 6-4, the end of drum shaft 6-8 cooperates spacing use with bidirectionally limited plate 1-1, and the end of extension spring 6-1 is fixed on crank 6-4 and goes up the extension spring anchor shaft I 6-9 that is provided with; The other end is fixed on the extension spring anchor shaft II 6-10 that is provided with on the △ type Swing Arm 6, is provided with pressing plate 6-3 between the outside of △ type Swing Arm 6 and the crankshaft 6-6;

The periphery of said drum shaft 6-8 is arranged with the cylinder 6-7 that is used to the power of reducing friction, thereby makes cliding friction become friction of rolling;

Said pressing plate 6-3 is for being used to prevent the axially movable U-shaped pressing plate of crankshaft 6-6;

The both sides, upper end of said bidirectionally limited plate 1-1 are respectively equipped with the crank 6-4 of △ type Swing Arm 6 and go up the spacing curved surface 8 that set cylinder 6-7 cooperates clamping to use.

The safe locking device that a kind of container spreader of the present invention is used, safety of operation is reliable, can avoid freight container to come off in the use aloft, thereby actv. has guaranteed the intact of personal safety and goods.

Description of drawings

Fig. 1: a kind of container spreader scheme drawing of the present invention with safe locking device;

The birds-eye view of Fig. 2: Fig. 1;

Fig. 3: D-D cutaway view among Fig. 2;

Fig. 4: safe locking device structural representation of the present invention;

The left view of Fig. 5: Fig. 4;

Fig. 6: safe locking device 3 dimensional drawing of the present invention;

Fig. 7: A-A cutaway view among Fig. 4;

Fig. 8: the partial enlarged drawing of I among Fig. 7;

Fig. 9: the constitution diagram during 0 ° of safe locking device of the present invention;

Figure 10: the constitution diagram when safe locking device of the present invention rotates to 70 °

Figure 11: safe locking device of the present invention rotates to 90 °, the constitution diagram when control wire 2 is not loose;

Figure 12: safe locking device of the present invention rotates to 90 °, loose and the constitution diagram after weight 7 landings of control wire 2;

Rope in the drawings, 1, duel spreader frames, 2, control wire, 3, four-bar linkage, 4; 5, twist lock, 6, △ type Swing Arm, 7, weight, 8, spacing curved surface, 1-1, bidirectionally limited plate; 6-1, extension spring, 6-2, ratchet, 6-3, pressing plate, 6-4, crank, 6-5, key; 6-6, crankshaft, 6-7, cylinder, 6-8, drum shaft, 6-9, extension spring anchor shaft I, 6-10, extension spring anchor shaft II.

The specific embodiment

Provide the specific embodiment of the present invention below in conjunction with accompanying drawing, be used for further specifying technical scheme of the present invention.

Embodiment

The safe locking device that a kind of container spreader of present embodiment is used; Be used with the △ type Swing Arm 6 and the four-bar linkage 3 that are installed on the duel spreader frames 1; Comprise the bidirectionally limited plate 1-1 that is fixed on the duel spreader frames 1; Bidirectionally limited plate 1-1 is positioned at △ type Swing Arm 6 sides, and △ type Swing Arm 6 chute two ends downsides are fitted with crankshaft 6-6 respectively, crankshaft 6-6 one end be provided with its interlock be positioned at △ type Swing Arm 6 inboards and the end is used for the ratchet 6-2 against weight 7; The other end that crankshaft 6-6 is positioned at △ type Swing Arm 6 outsides is connected with crank 6-4 through key 6-5; Be connected with drum shaft 6-8 on the crank 6-4, the end of drum shaft 6-8 cooperates spacing use with bidirectionally limited plate 1-1, and the end of extension spring 6-1 is fixed on crank 6-4 and goes up the extension spring anchor shaft I 6-9 that is provided with; The other end is fixed on the extension spring anchor shaft II 6-10 that is provided with on the △ type Swing Arm 6, is provided with pressing plate 6-3 between the outside of △ type Swing Arm 6 and the crankshaft 6-6; The periphery of drum shaft 6-8 is arranged with the cylinder 6-7 that is used to the power of reducing friction, thereby makes cliding friction become friction of rolling; Pressing plate 6-3 is for being used to prevent the axially movable U-shaped pressing plate of crankshaft 6-6; The both sides, upper end of bidirectionally limited plate 1-1 are respectively equipped with the crank 6-4 of △ type Swing Arm 6 and go up the spacing curved surface 8 that set cylinder 6-7 cooperates clamping to use.

A kind of container spreader with above-mentioned safe locking device; Comprise the △ type Swing Arm 6 that is installed on the duel spreader frames 1; Be provided with the chute of sliding block joint weight 7 between the △ type Swing Arm 6; Weight 7 is connected with the control wire 2 on top, and △ type Swing Arm 6 is connected with four-bar linkage 3, the set twist lock that has rope 45 around the four-bar linkage 3 control linkage duel spreader frames 1; Rope 4 the rising and falling of completion suspender and freight container under the manipulation of hoisting crane, △ type Swing Arm 6 and duel spreader frames 1 are provided with the safe locking device with its interlock.

Operating process of the present invention:

Control wire 2 spurs △ type Swing Arms 6 half-twist in the direction of the clock through weight 7; △ type Swing Arm 6 drives twist lock 5 synchronous half-twists through four-bar linkage 3; Next action △ type Swing Arm 6 is pressed the anticlockwise direction half-twist again; The synchronous again half-twist of twist lock 5, thus realized that suspender combines lifting or disengaging smoothly with freight container.

The concrete course of action of safe locking device is:

When drawing on the control wire 2; End upward movement through weight 7 drive bottoms connected △ type Swing Arm 6; At this moment; Because the pulling force of extension spring 6-1 causes ratchet 6-2 to be resisted against weight 7 all the time for the torque of crank 6-4 and weight 7 is in the chute of △ type Swing Arm 6, thereby is implemented in any case, weight 7 all can not be slipped to and the opposite direction of operation action;

, draws control wire on continuing; Ratchet 6-2 is in the process of △ type Swing Arm 6 rotations; All the time apply certain power through crank 6-4 to it by spring 6-1; It is held in the mouth all the time in the chute of △ type Swing Arm 6, no matter cause under what state, weight 7 all can not be slipped to the direction opposite with the operation action; △ type Swing Arm 6 rotate near or when arriving 90 °, crank 6-4 goes up set cylinder 6-7 and slides along with the spacing curved surface 8 of bidirectionally limited plate 1-1, this moment is in cylinder 6-7 and spacing curved surface 8 processes that fortune is transported relatively; Apply torque for crank 6-4 by bidirectionally limited plate 1-1 through cylinder 6-7, crank 6-4 is carried out limit rotation, thereby limited the rotation of ratchet 6-2 greater than extension spring 6-1 pulling force; Under the continuation rotation of △ type Swing Arm 6; Ratchet 6-2 also is hidden in thereupon breaking away from weight 7 in the groove of Swing Arm 6 (shown in figure 11) gradually, and at this moment control wire 2 is loose, and weight 7 is because deadweight is slipped to the other end of △ type Swing Arm 6 automatically; Be ready to complete next action; Himself weight can overcome the power that extension spring 6-1 applies ratchet 6-2 during weight 7 landings to △ type Swing Arm 6 belows, thereby crosses ratchet 6-2, when weight 7 landings to ratchet 6-2 below; Ratchet 6-2 can return to state shown in Figure 12 again under the application force of extension spring 6-1, thereby plays the safety locking effect.

The simple and easy container spreader of △ type swinging arm type constantly repeats operation with coming to this reciprocation cycle.

If safe locking device is not installed; When △ type Swing Arm 6 rotates to Figure 10 state; If at this moment control wire 2 is lax for some reason, the opposite direction of required action when weight 7 will be slipped to operation automatically, two kinds of situation will appear in the result: the one, misoperation; Come off when needing lifting, sling in the time of need coming off.The 2nd, (less than 90 °) not in place because of rotating, at this moment operating personal can't judge whether again to put in place, just possibly cause the phenomenon that freight container comes off when lifting aloft, can cause case to ruin the people when serious and die.

Claims

1. safe locking device for container spreader; Be used with the Δ type Swing Arm (6) and the four-bar linkage (3) that are installed on the duel spreader frames (1); It is characterized in that comprising the bidirectionally limited plate (1-1) that is fixed on the duel spreader frames (1); Bidirectionally limited plate (1-1) is positioned at Δ type Swing Arm (6) side; Δ type Swing Arm (6) chute two ends downside is fitted with crankshaft (6-6) respectively; Crankshaft (6-6) end be provided with its interlock be positioned at Δ type Swing Arm (6) inboard and the end is used for the ratchet (6-2) against weight (7), the other end that crankshaft (6-6) is positioned at Δ type Swing Arm (6) outside is connected with crank (6-4) through key (6-5), is connected with drum shaft (6-8) on the crank (6-4); One end of drum shaft (6-8) cooperates spacing use with bidirectionally limited plate (1-1); One end of extension spring (6-1) is fixed on crank (6-4) and goes up the first extension spring anchor shaft (I 6-9) that is provided with, and the other end is fixed on Δ type Swing Arm (6) and goes up the second extension spring anchor shaft (II 6-10) that is provided with, and is provided with pressing plate (6-3) between the outside of Δ type Swing Arm (6) and the crankshaft (6-6).

2. according to the described a kind of safe locking device for container spreader of claim 1, the periphery that it is characterized in that said drum shaft (6-8) is arranged with and is used to the power of reducing friction, makes cliding friction become the cylinder (6-7) of friction of rolling.

3. according to the described a kind of safe locking device for container spreader of claim 1, it is characterized in that said pressing plate (6-3) is for being used to prevent the axially movable U-shaped pressing plate of crankshaft (6-6).

4. according to the described a kind of safe locking device for container spreader of claim 2, the both sides, upper end that it is characterized in that said bidirectionally limited plate (1-1) are respectively equipped with the crank (6-4) of Δ type Swing Arm (6) and go up the spacing curved surface (8) that set drum shaft (6-8) or the sheathed cylinder (6-7) of drum shaft (6-8) periphery cooperate the clamping use.