Self-weight safety card and driving hook

Abstract

The utility model discloses a self-weight type safety card and a driving hook head, including a shaft sleeve, the inner ring fixed sleeve of the shaft sleeve is provided with a connecting shaft, the outer ring rotating sleeve of the connecting shaft is provided with a connecting sleeve, the outer wall of the connecting sleeve is fixedly connected with an anti-drop rod and a gravity rod, and a positioning mechanism for limiting the rotation of the connecting sleeve is installed inside the connecting shaft; the positioning mechanism includes a rotating shaft and a mounting sleeve, the rotating shaft is rotatably installed on the inner wall of the connecting shaft, the outer ring fixed sleeve of the rotating shaft is provided with a cam, the mounting sleeve is fixed on the inner wall of the connecting shaft, and the inner ring movable sleeve of the mounting sleeve is provided with a positioning shaft, one end of the positioning shaft passes through the connecting shaft and is plugged into the connecting sleeve, and the other end conflicts with the protrusion of the cam. The utility model uses the lever principle of the gravity rod to make the anti-drop rod automatically conflict with the hook body to close the opening of the hook body, thereby reducing the probability of deformation and reducing safety risks.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting tools, in particular to a self-weight type safety card and a driving hook. Background Art

[0002] The hook of common lifting equipment includes a hook body, an anti-dropping baffle and a return spring. The anti-dropping baffle is hinged to the hook body, and the return spring cooperates with the anti-dropping baffle to make the anti-dropping baffle spring up to close the opening of the hook body. The anti-dropping baffle is used to prevent the lifting connection or heavy objects from falling off the hook.

[0003] During long-term use, the anti-detachment baffle and return spring of the driving hook head will be deformed and damaged due to frequent use, leading to failure, posing certain safety hazards. Utility Model Content

[0004] The utility model aims at solving the problems in the prior art and proposes the following technical solutions:

[0005] The self-weight type safety card and the driving hook head include a shaft sleeve, the inner ring fixed sleeve of the shaft sleeve is provided with a connecting shaft, the outer ring rotating sleeve of the connecting shaft is provided with a connecting sleeve, the outer wall of the connecting sleeve is fixedly connected with an anti-drop rod and a gravity rod, and a positioning mechanism for limiting the rotation of the connecting sleeve is installed inside the connecting shaft;

[0006] The positioning mechanism includes a rotating shaft and a mounting sleeve. The rotating shaft is rotatably mounted on the inner wall of the connecting shaft. The outer ring fixed sleeve of the rotating shaft is provided with a cam. The mounting sleeve is fixed on the inner wall of the connecting shaft, and the inner ring movable sleeve of the mounting sleeve is provided with a positioning shaft. One end of the positioning shaft passes through the connecting shaft and is plugged into the connecting sleeve, and the other end contacts the protrusion of the cam.

[0007] As a preferred embodiment of the above technical solution, the outer ring fixing sleeve of the positioning shaft is provided with a baffle plate 2, one side of the baffle plate 2 is fixedly connected with a spring 1, and one end of the spring 1 away from the baffle plate 2 is fixedly connected to the inner wall of the mounting sleeve.

[0008] As a preferred embodiment of the above technical solution, one end of the rotating shaft passes through one side of the connecting shaft and is movably sleeved with a limit plate, and a plurality of limit blocks are fixedly connected to the outer wall of the connecting shaft, and the limit blocks are plugged into the limit plate.

[0009] As a preferred embodiment of the above technical solution, the rotating shaft is provided with a guide groove, the inner ring of the limiting plate is fixedly connected with a guide block, the guide block is slidably connected to the guide groove, and a handle is fixedly connected to the side of the rotating shaft away from the connecting shaft.

[0010] As a preferred embodiment of the above technical solution, a side of the limit plate away from the connecting shaft is fixedly connected to a second spring, an end of the second spring away from the limit plate is fixedly connected to a first baffle, and the first baffle is fixedly connected to the rotating shaft.

[0011] The driving hook head comprises a hook body and a self-weight type safety card, wherein the self-weight type safety card is fixedly connected with the hook body.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model uses the lever principle of the gravity rod to make the anti-drop rod automatically contact the hook body to close the opening of the hook body, thereby reducing the probability of deformation and reducing safety risks;

[0014] 2. The utility model limits the rotation of the connecting sleeve through the positioning mechanism, thereby preventing the gravity rod from accidentally touching the anti-drop rod and causing the opening of the hook body to open, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The structure diagram of the self-weight type insurance card and the driving hook head in the embodiment is shown;

[0016] Figure 2 It is shown that Figure 1 A schematic diagram of the structure enlargement at point A;

[0017] Figure 3 What is shown is a schematic structural diagram of the positioning shaft in the embodiment.

[0018] Description of reference numerals:

[0019] 2. Bushing; 3. Connecting shaft; 4. Connecting sleeve; 5. Anti-drop rod; 6. Gravity rod; 7. Rotating shaft; 8. Cam; 9. Baffle 1; 10. Mounting sleeve; 11. Positioning shaft; 12. Baffle 2; 13. Spring 1; 14. Limit plate; 15. Spring 2; 16. Handle; 17. Limit block. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0021] Example

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the self-weight type insurance card and the driving hook head include a shaft sleeve 2, the inner ring fixed sleeve of the shaft sleeve 2 is provided with a connecting shaft 3, the outer ring rotating sleeve of the connecting shaft 3 is provided with a connecting sleeve 4, the outer wall of the connecting sleeve 4 is fixedly connected with an anti-slip rod 5 and a gravity rod 6, the anti-slip rod 5 and the gravity rod 6 are preferably made of round steel, and the length of the gravity rod 6 is greater than that of the anti-slip rod 5, the gravity rod 6 is deflected downward by the lever principle, and a positioning mechanism for limiting the rotation of the connecting sleeve 4 is installed inside the connecting shaft 3;

[0023] The positioning mechanism includes a rotating shaft 7 and a mounting sleeve 10. The rotating shaft 7 is rotatably mounted on the inner wall of the connecting shaft 3. The outer ring fixed sleeve of the rotating shaft 7 is provided with a cam 8. The shape of the cam 8 is elliptical or other shapes. The mounting sleeve 10 is fixed on the inner wall of the connecting shaft 3, and the inner ring movable sleeve of the mounting sleeve 10 is provided with a positioning shaft 11. One end of the positioning shaft 11 passes through the connecting shaft 3 and is plugged into the connecting sleeve 4, and the other end contacts the protrusion of the cam 8.

[0024] Specifically, employees can drive the anti-slip rod 5 to rotate with the shaft sleeve 2 and the connecting shaft 3 as the axis by pulling the gravity rod 6. When the gravity rod 6 is not disturbed by any external force, it will deviate to the ground by its own gravity. At the same time, the rotating shaft 7 can drive the cam 8 to rotate. When the protrusion of the cam 8 collides with the end of the positioning shaft 11, the cam 8 will push the positioning shaft 11 into the groove of the connecting sleeve 4, thereby limiting the rotation of the connecting sleeve 4. At this time, the gravity rod 6 cannot be lifted. After the protrusion of the cam 8 positions the shaft 11, the positioning shaft 11 will be separated from the groove of the connecting sleeve 4 due to its own gravity. At this time, the connecting sleeve 4 and the connecting shaft 3 can resume rotation.

[0025] like Figure 3 As shown, the outer ring fixed sleeve of the positioning shaft 11 is provided with a baffle plate 2 12 , one side of the baffle plate 2 12 is fixedly connected with a spring 13 , and one end of the spring 13 away from the baffle plate 2 12 is fixedly connected to the inner wall of the mounting sleeve 10 .

[0026] The diameter of baffle plate 2 12 is larger than the diameter of the through hole of mounting sleeve 10, and is used to prevent the positioning shaft 11 from separating from mounting sleeve 10. Spring 13 is used to pull the positioning shaft 11 away from the groove of connecting sleeve 4, so as to prevent the positioning shaft 11 from entering the groove of connecting sleeve 4 when the orientation of the device is reversed.

[0027] like Figure 2 As shown, one end of the rotating shaft 7 passes through one side of the connecting shaft 3 and is movably sleeved with a limit plate 14. The outer wall of the connecting shaft 3 is fixedly connected with a plurality of limit blocks 17, which are plugged into the limit plate 14. The rotating shaft 7 is provided with a guide groove, and the inner ring of the limit plate 14 is fixedly connected with a guide block, which is slidably connected to the guide groove. A handle 16 is fixedly connected to the side of the rotating shaft 7 away from the connecting shaft 3.

[0028] Specifically, when the limit block 17 is plugged into the limit plate 14, the sliding cooperation between the guide block and the guide groove will prevent the rotating shaft 7 from rotating. If you want to rotate the rotating shaft 7, you need to pull the handle 16 to drive the limit plate 14 to move on the outer ring of the rotating shaft 7 until it is completely separated from the limit block 17. At this time, the rotating shaft 7 can be rotated.

[0029] like Figure 2 As shown, a spring 2 15 is fixedly connected to one side of the limit plate 14 away from the connecting shaft 3 , and a baffle 1 9 is fixedly connected to one end of the spring 2 15 away from the limit plate 14 , and the baffle 1 9 is fixedly connected to the rotating shaft 7 .

[0030] The action of the second spring 15 keeps the limit plate 14 in contact with the connecting shaft 3 at all times, thereby preventing the limit plate 14 from being separated from the limit block 17 .

[0031] like Figure 1 As shown, the driving hook head includes a hook body and a self-weight type safety card, and the self-weight type safety card is fixedly connected to the hook body.

[0032] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A self-weight insurance card, comprising a sleeve (2), wherein the inner ring of the sleeve (2) is fixedly provided with a connecting shaft (3), and the outer ring of the connecting shaft (3) is rotatably provided with a connecting sleeve (4), characterized in that: The outer wall of the connecting sleeve (4) is fixedly connected with an anti-drop rod (5) and a gravity rod (6), and a positioning mechanism for limiting the rotation of the connecting sleeve (4) is installed inside the connecting shaft (3); The positioning mechanism comprises a rotating shaft (7) and a mounting sleeve (10); the rotating shaft (7) is rotatably mounted on the inner wall of the connecting shaft (3); the outer ring fixed sleeve of the rotating shaft (7) is provided with a cam (8); the mounting sleeve (10) is fixed on the inner wall of the connecting shaft (3); and the inner ring movable sleeve of the mounting sleeve (10) is provided with a positioning shaft (11); one end of the positioning shaft (11) passes through the connecting shaft (3) and is plugged into the connecting sleeve (4); and the other end contacts the protrusion of the cam (8).

2. The self-weight insurance card according to claim 1, characterized in that: The outer ring fixed sleeve of the positioning shaft (11) is provided with a baffle plate 2 (12), one side of the baffle plate 2 (12) is fixedly connected with a spring 1 (13), and one end of the spring 1 (13) away from the baffle plate 2 (12) is fixedly connected to the inner wall of the mounting sleeve (10).

3. The self-weight insurance card according to claim 1, characterized in that: One end of the rotating shaft (7) passes through one side of the connecting shaft (3) and is movably sleeved with a limit plate (14); a plurality of limit blocks (17) are fixedly connected to the outer wall of the connecting shaft (3); and the limit blocks (17) are plugged into the limit plate (14).

4. The self-weight insurance card according to claim 3, characterized in that: The rotating shaft (7) is provided with a guide groove, the inner ring of the limiting plate (14) is fixedly connected with a guide block, the guide block is slidably connected to the guide groove, and the side of the rotating shaft (7) away from the connecting shaft (3) is fixedly connected with a handle (16).

5. The self-weight insurance card according to claim 3, characterized in that: A second spring (15) is fixedly connected to the side of the limit plate (14) away from the connecting shaft (3), and a baffle plate (9) is fixedly connected to the end of the second spring (15) away from the limit plate (14), and the baffle plate (9) is fixedly connected to the rotating shaft (7).

6. Driving hook head, characterized in that: It comprises a hook body and a self-weight insurance card as described in any one of claims 1 to 5, wherein the self-weight insurance card is fixedly connected to the hook body.

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