Anti-swing and limiting locking mechanism for small box type lifting appliance

Abstract

The utility model relates to an anti-swing and limiting locking mechanism for a small box type lifting appliance, and belongs to the technical field of hoisting machinery manufacturing. The lifting appliance structurally comprises a lifting appliance body and a supporting frame, two symmetrical guide pins are arranged on the upper surface of the lifting appliance body, a sleeve is arranged on the lower surface of the supporting frame, and the sleeve is matched with the guide pins in an inserted mode; a plurality of positioning blocks are arranged on the lower surface of the lifting appliance and are limited in the limiting grooves of the small box; and a rotary lock hook is arranged on the lifting appliance and is in lap joint with a cross beam at the top of the small box. The mechanism not only can effectively ensure the stability of the small box in the moving process, but also has guiding, positioning and locking functions in the lifting process, so that the transportation efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to an anti-sway and limit locking mechanism for a small box-type sling, belonging to the technical field of lifting machinery manufacturing. Background Art

[0002] Existing small box lifters only have a four-point lifting hook structure, which leads to inaccurate positioning during the lifting process, thus affecting work efficiency. In addition, the lifter has no physical connection with the support frame after lifting. During strong winds, the small box will sway and become unstable, thus affecting the transportation of the cargo inside. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide an anti-sway and limit locking mechanism for a small box-type sling, which can not only effectively ensure the stability of the small box during movement, but also has guiding positioning and locking functions during the lifting process, thereby improving transportation efficiency.

[0004] In order to solve the above problems, the specific technical solutions of the present invention are as follows: a small box-type sling anti-sway and limit locking mechanism, including a sling and a support frame, two symmetrical guide pins are provided on the upper surface of the sling, and a sleeve is provided on the lower surface of the support frame, and the sleeve is plugged into the guide pins; a number of positioning blocks are provided on the lower surface of the sling, and the positioning blocks are limited in the limit groove of the small box; a rotating lock hook is provided on the sling, and the rotating lock hook overlaps the crossbeam on the top of the small box.

[0005] The lower end of the positioning block is provided with an inclined surface, and the inclined surfaces of the two symmetrical positioning blocks are symmetrically arranged.

[0006] There are six positioning blocks, which are divided into two groups. Four positioning blocks form a group and are located at the four corners of the lower surface of the sling; the other group of two positioning blocks are located on both sides of the center of the lower surface of the sling; the inclined surfaces of the two groups of positioning blocks are rotated 90° along the vertical axis.

[0007] The sling is provided with an in-place detection mechanism, and the lower end contact of the in-place detection mechanism contacts and is triggered by the upper surface of the small box.

[0008] The in-place detection mechanism is arranged along the diagonal direction of the upper surface of the small box.

[0009] The structure of the in-position detection mechanism is as follows: a limit through hole is provided on the sling, a screw is slidably connected to the limit platform of the limit through hole, the upper end of the screw is connected to the trigger spring, the lower end of the screw passes through the limit platform and is connected to the trigger head, and a spring is supported between the trigger head and the limit platform; a detection switch is provided at the side end of the trigger spring, and the detection switch triggers contact with the contact spring.

[0010] The anti-sway and limit locking mechanism of the small box-type spreader of the present application adopts the above structure, which has the following advantages:

[0011] 1. The guide pin and sleeve are inserted into the matching structure to ensure that the small box can be matched with the support frame of the fixed structure after it is in place, thereby ensuring stable performance during the movement;

[0012] 2. Two sets of positioning blocks with different directions are set. During the lifting process, the inclined surfaces of the positioning blocks can be used for left and right and front and back guidance, thereby achieving rapid positioning;

[0013] 3. A position detection mechanism is set on the sling to monitor whether the sling is fully fitted with the top surface of the small box. The sling is lifted when they are fully fitted to ensure safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the front view of the anti-sway and limit locking mechanism of a small box-type spreader.

[0015] Figure 2 for Figure 1 AA cross-sectional view.

[0016] Figure 3 for Figure 1 A partial enlarged view of point B.

[0017] Figure 4 This is a top view of the anti-sway and limit locking mechanism of a small box-type spreader. DETAILED DESCRIPTION

[0018] like Figures 1 to 4 As shown, a small box-type sling anti-sway and limit locking mechanism includes a sling 10 and a support frame 20. Two symmetrical guide pins 11 are provided on the upper surface of the sling 10, and a sleeve 21 is provided on the lower surface of the support frame 20. The sleeve 21 is plugged into the guide pin 11; a plurality of positioning blocks 13 are provided on the lower surface of the sling 10, and the positioning blocks 13 are limited in the limit groove of the small box 1; a rotating lock hook 2 is provided on the sling 10, and the rotating lock hook 2 overlaps the crossbeam on the top of the small box 1.

[0019] The lower end of the positioning block 13 is provided with an inclined surface, and the inclined surfaces of the two symmetrical positioning blocks 13 are symmetrically arranged. There are six positioning blocks 13, which are divided into two groups, of which four positioning blocks 13 form a group and are located at the four corners of the lower surface of the sling 10, such as Figure 1 and Figure 2 As shown, in Figure 1 The two positioning blocks 13 on the left side are Figure 2 As can be seen, the two inclined surfaces are respectively outward to guide the front and rear directions of the small box 1; the other two positioning blocks 13 are located on both sides of the center of the lower surface of the sling 10, such as Figure 1As shown, the inclined surfaces of the two positioning blocks 13 in the middle are outward to guide the left and right directions of the small box 1; therefore, the inclined surfaces of the two groups of positioning blocks 13 are rotated 90° along the vertical axis to guide the small box 1 in four directions to ensure that the sling is in place.

[0020] The lifting device 10 is provided with an in-position detection mechanism 3. The lower end contact of the in-position detection mechanism 3 is triggered by contact with the upper surface of the small box 1. The in-position detection mechanism 3 is arranged along the diagonal direction of the upper surface of the small box 1. Only when two in-position detection mechanisms 3 are triggered at the same time, the rotary lock hook 2 receives the rotation command, completes the locking of the lifting device 10 and the rotary lock hook 2, and then the lifting is carried out.

[0021] The in-position detection mechanism 3 is constructed as follows: a limit hole 34 is provided on the sling 10. A screw 33 is slidably connected to the limit platform of the limit hole 34. The upper end of the screw 33 is connected to a trigger spring 31. The lower end of the screw 33 passes through the limit platform and connects to a trigger head 35. A spring 32 is supported between the trigger head 35 and the limit platform. A detection switch 36 is provided at the side of the trigger spring 31, which triggers the contact spring 31. The in-position detection mechanism 3 converts vertical contact between the trigger spring 31 and the detection switch into horizontal triggering, preventing hard contact between the detection switch and improving its service life.

[0022] The working process of the anti-sway and limit locking mechanism of the small box-type sling is as follows: in the initial state, the support frame 20 is fixed on the crane, and the hoisting wire rope of the crane is connected to the sling 10. When the sling 10 is about to contact the small box 1, each positioning block 13 corresponds to the opening of the small box 1. When there is a slight deviation, the inclined surface of the positioning block 13 has a guiding effect. When the bottom surface of the sling 10 is completely in contact with the top surface of the small box 1, the rotary lock hook 2 completely enters the socket. At this time, the in-place detection mechanism is triggered, and the external control mechanism controls the rotary lock hook 2 to rotate 90°, completely locking the sling 10 and the small box 1, and then lifting. When the small box 1 moves up into place, the guide pin 11 is plugged into the sleeve 21 to complete the stability of the small box 1 during the movement of the crane.

Claims

1. A small box-type sling anti-sway and limit locking mechanism, comprising a sling (10) and a support frame (20), characterized in that: Two symmetrical guide pins (11) are provided on the upper surface of the sling (10), and a sleeve (21) is provided on the lower surface of the support frame (20), and the sleeve (21) is plugged into and matched with the guide pin (11); a plurality of positioning blocks (13) are provided on the lower surface of the sling (10), and the positioning blocks (13) are limited in the limiting grooves of the small box (1); a rotating lock hook (2) is provided on the sling (10), and the rotating lock hook (2) is overlapped with the crossbeam on the top of the small box (1).

2. The anti-sway and limit locking mechanism for a small box-type sling according to claim 1, characterized in that: The lower end of the positioning block (13) is provided with an inclined surface, and the inclined surfaces of the two symmetrically positioned positioning blocks (13) are symmetrically arranged.

3. The anti-sway and limit locking mechanism for a small box-type sling according to claim 2, characterized in that: The number of the positioning blocks (13) is six and they are divided into two groups, wherein four positioning blocks (13) form one group and are located at the four corners of the lower surface of the sling (10); the other group of two positioning blocks (13) are located on both sides of the center of the lower surface of the sling (10); the inclined surfaces of the two groups of positioning blocks (13) are rotated 90 degrees along the vertical axis.

4. The anti-sway and limit locking mechanism for a small box-type sling according to claim 1, characterized in that: The sling (10) is provided with an in-place detection mechanism (3), and the lower end contact of the in-place detection mechanism (3) is triggered by contact with the upper surface of the small box (1).

5. The anti-sway and limit locking mechanism for a small box-type sling according to claim 4, characterized in that: The in-place detection mechanism (3) is arranged along the diagonal direction of the upper surface of the small box (1).

6. The anti-sway and limit locking mechanism for a small box-type sling according to claim 4, characterized in that: The structure of the in-position detection mechanism (3) is as follows: a limit through hole (34) is provided on the sling (10); a screw rod (33) is slidably connected to the limit platform of the limit through hole (34); the upper end of the screw rod (33) is connected to the trigger spring (31); the lower end of the screw rod (33) passes through the limit platform and is connected to the trigger head (35); a spring (32) is supported between the trigger head (35) and the limit platform; a detection switch (36) is provided at the side end of the trigger spring (31); the detection switch (36) is in trigger contact with the contact spring (31).

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