Safety hook device capable of limiting horizontal rotation

Abstract

The utility model discloses a safety hook device capable of limiting horizontal rotation, which comprises a pulley block, side end fixing plates are arranged at the front end and the rear end of the pulley block, a lower connecting block is fixed between the lower parts of the two side end fixing plates, a rotating shaft is fixed in the middle of the top surface of a lifting appliance connecting piece, and the rotating shaft is movably connected to the lower connecting block through a bearing. A rotating gear is fixed to the middle of the top face of the lifting appliance connecting piece, the lower portion of a rotating shaft is inserted into a middle through hole of the rotating gear in a sleeved mode, and the outer side wall of the lower portion of the rotating shaft is welded and fixed to the inner side wall of the middle through hole of the rotating gear. Fixed connecting blocks are arranged between the left portions and the right portions of the lower portions of the two side end fixing plates, and the front ends and the rear ends of the fixed connecting blocks are fixedly connected to the inner side walls of the two side end fixing plates. The horizontal position of the lifting hook can be limited, it is guaranteed that the lifting hook does not horizontally rotate relative to the movable pulley, the lifting hook basically does not horizontally rotate when the lifting hook moves after lifting a heavy object, the safe transportation effect is improved, and safety is greatly improved.

Description

Technical field:

[0001] The utility model relates to the technical field of lifting equipment, and more specifically to a safety hook device with limitable horizontal rotation. Background technology:

[0002] The lifting equipment starts a vertical or vertical and horizontal working stroke after picking up the materials, unloads after reaching the destination, and then travels empty to the material picking location, completing a working cycle, and then performs a second lifting or transportation.

[0003] In lifting equipment, such as cranes, hooks are required for lifting heavy objects. However, the existing hooks are generally movably connected to the movable pulley block, which makes it very easy to rotate during lifting. One of the reasons is the deflection caused by the shaking of the wire rope, and the other is the self-rotation of the hook.

[0004] At the same time, during lifting and transportation, it is sometimes necessary to ensure that the lifted object is at a certain rotation angle. After lifting such heavy objects on the existing hook, it is manually rotated to a certain angle and then lifted to the destination. In this process, the weight of the heavy object is mainly used to increase the friction between the hook and the upper connecting part to reduce the probability of rotation. However, during the lifting process, the hook is still prone to horizontal deflection, which affects the lifting and transportation effect, and even makes it easy for the lifted heavy object to touch the surrounding objects after the rotation angle during the lifting and movement, causing safety problems. Utility model content:

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a safety hook device with limitable horizontal rotation, which can limit the horizontal position of the hook to ensure that it will not rotate horizontally relative to the movable pulley, so that it will basically not rotate horizontally when moving after lifting the heavy object, thereby improving the safety transportation effect and greatly improving safety.

[0006] The solution of the utility model to solve the technical problem is:

[0007] A safety hook device with limited horizontal rotation comprises a pulley block, side end fixing plates are installed at the front and rear ends of the pulley block, a lower connecting block is fixed between the lower parts of the two side end fixing plates, a rotating shaft is fixed at the middle part of the top surface of the sling connecting piece, the rotating shaft is movably connected to the lower connecting block through a bearing, a rotating gear is fixed at the middle part of the top surface of the sling connecting piece, the lower part of the rotating shaft is inserted into the middle through hole of the rotating gear, and the lower outer side wall of the rotating shaft is welded and fixed to the inner side wall of the middle through hole of the rotating gear;

[0008] A fixed connecting block is provided between the left and right parts of the lower parts of the two side end fixing plates, the front and rear ends of the fixed connecting block are fixedly connected to the inner walls of the two side end fixing plates, a central through hole is formed in the middle of the fixed connecting block, a positioning rod is inserted into the corresponding central through hole, and the bottom end of the positioning rod extends out of the bottom end of the central through hole and is inserted into the corresponding tooth groove of the rotating gear below.

[0009] A radially extending edge is formed on the lower outer wall of the positioning rod, and a compression spring is inserted into the positioning rod, the top end of the compression spring is pressed against the bottom surface of the corresponding fixed connection block, and the bottom end of the compression spring is pressed against the top surface of the radially extending edge;

[0010] The top end of the positioning rod extends out of the top surface of the corresponding fixed connection block and is formed with an upper limit block, and the outer diameter of the upper limit block is greater than the inner diameter of the central through hole.

[0011] A horizontal connecting plate is fixed to the middle of the bottom surface of the bottom plate of the sling connector, and a hook is fixed to the bottom surface of the horizontal connecting plate.

[0012] A vertical baffle is fixed to the bottom surface of the horizontal connecting plate above the end of the hook of the hook, and a limiting piece is movably connected to the end of the hook of the hook, and the outer side of the upper end of the limiting piece presses against the inner side wall of the bottom end of the vertical baffle.

[0013] The C-shaped bending part of the limiter has two ends inserted into the two ends of the through holes extending forward and backward formed in the middle of the end of the hook part of the hook, and the bending parts at both ends of the bending part are inserted with torsion springs, one end of the torsion spring is clamped in the positioning hole formed on the side wall of the end of the hook part of the hook, and the other end of the torsion spring is pressed against the inner side surfaces of the front and rear side bending arms of the bending part, and the outer side wall of the upper end of the bending part is pressed against the inner side wall of the bottom end of the vertical baffle. The torsion spring can ensure that the upper end of the limiter is automatically pressed against the inner side wall of the bottom end of the vertical baffle, realizing automatic locking, preventing the hanging ring of the heavy object hung on the hook from sliding out, and having high safety.

[0014] The outstanding effects of the utility model are:

[0015] Compared with the prior art, it can limit the horizontal position of the hook to ensure that it will not rotate horizontally relative to the movable pulley, so that it basically will not rotate horizontally when moving after lifting the heavy object, thereby improving the safe transportation effect and greatly improving safety.

[0016] At the same time, the limiting member thereof automatically presses against the bottom end of the vertical baffle, so that the heavy object hung on the hook will not fall out of the hook, thereby further improving the stability and safety of lifting and handling. Description of the drawings:

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

[0018] Figure 2 It is a partial structural schematic diagram of the pulley block of the utility model;

[0019] Figure 3 It is a partial structural schematic diagram of the hook of the utility model. Specific implementation method:

[0020] For example, see Figures 1 to 3 As shown, a safety hook device with limited horizontal rotation includes a pulley block 10, and side end fixing plates 11 are installed at the front and rear ends of the pulley block 10. The two ends of the central rotating shaft of the pulley block 10 are fixed on the two side end fixing plates 11, and a lower connecting block 12 is fixed between the lower parts of the two side end fixing plates 11. A rotating shaft 21 is fixed in the middle of the top surface of the sling connecting member 20, and the rotating shaft 21 is movably connected to the lower connecting block 12 through a bearing. The top of the rotating shaft 21 extends out of the top surface of the lower connecting block 12, and an extended edge is formed on the top outer wall, which is located on the top surface of the lower connecting block 12. A rotating gear 22 is fixed in the middle of the top surface of the sling connecting member 20, and the lower part of the rotating shaft 21 is inserted into the middle through hole of the rotating gear 22, and the lower outer wall of the rotating shaft 21 is welded and fixed to the inner wall of the middle through hole of the rotating gear 22; the bottom end surface of the rotating shaft 21 is fixed to the top surface of the sling connecting member 20.

[0021] A fixed connecting block 13 is provided between the left and right parts of the lower part of the two side end fixing plates 11, and the front and rear ends of the fixed connecting block 13 are fixedly connected to the inner walls of the two side end fixing plates 11. A central through hole 14 is formed in the middle of the fixed connecting block 13, and the positioning rod 30 is inserted into the corresponding central through hole 14. The bottom end of the positioning rod 30 extends out of the bottom end of the central through hole 14 and is inserted into the corresponding tooth groove of the rotating gear 22 below.

[0022] Furthermore, a radially extending edge 31 is formed on the lower outer wall of the positioning rod 30, and a compression spring 32 is inserted into the positioning rod 30, and the top end of the compression spring 32 is applied to the bottom surface of the corresponding fixed connection block 13, and the bottom end of the compression spring 32 is applied to the top surface of the radially extending edge 31;

[0023] The top end of the positioning rod 30 extends out of the top surface of the corresponding fixed connection block 13 and is formed with an upper limit block 33 . The outer diameter of the upper limit block 33 is greater than the inner diameter of the central through hole 14 .

[0024] Furthermore, the top surface of the radially extending edge 31 is formed with an annular protrusion 311, and the lower part of the compression spring 32 is inserted into the annular protrusion 311. The annular protrusion 311 can limit the lower part of the compression spring 32 to a certain extent.

[0025] Furthermore, a guide sleeve 1 is clamped on the inner wall of the central through hole 14, the top end of the guide sleeve 1 extends out of the top surface of the fixed connection block 13, and a radially extending edge is formed on its outer wall, and the top surface of the edge is pressed against the top surface of the fixed connection block 13, and the positioning rod 30 is inserted into the guide sleeve 1, and the outer wall of the positioning rod 30 is close to or close to the inner wall of the guide sleeve 1.

[0026] Furthermore, the bottom surface of the radially extending edge 31 is pressed against the top surface of the rotating gear 22 .

[0027] When using this structure, you can hold the top of the positioning rod 30 with both hands and pull it upward to compress the compression spring 32 so that the bottom end of the positioning rod 30 extends out of the corresponding tooth groove, and then rotate the sling connector 20 horizontally, so that the hook 24 installed on the bottom plate of the sling connector 20 rotates horizontally, changing the horizontal direction of the lifted weight to meet the direction and position requirements of the weight during lifting, and then, by loosening the top of the positioning rod 30, the bottom end of the positioning rod 30 extends into the tooth groove of the rotating gear 22 at this time, so that the hook 24 will not rotate horizontally relative to the pulley block 10, so that the subsequent horizontal movement will reduce shaking and horizontal rotation (the wire rope will still have smaller horizontal shaking and rotation when it moves horizontally), avoid surrounding objects as much as possible, improve movement stability, and reduce shaking and horizontal rotation.

[0028] Furthermore, a horizontal connecting plate 23 is fixed to the middle of the bottom surface of the bottom plate of the sling connector 20 , and a hook 24 is fixed to the bottom surface of the horizontal connecting plate 23 .

[0029] Furthermore, a vertical baffle 25 is fixed to the bottom surface of the horizontal connecting plate 23 above the end of the hook portion of the hook 24, and a limiting member 26 is movably connected to the end of the hook portion of the hook 24, and the outer side of the upper end of the limiting member 26 presses against the inner side wall of the bottom end of the vertical baffle 25.

[0030] Furthermore, the C-shaped bent part of the limiting member 26 has its two ends inserted into the two ends of the front and rear extending through holes formed in the middle of the end of the hook portion of the hook, and the bent parts at both ends of the bent part are inserted with torsion springs 27. One end of the torsion spring 27 is clamped in the positioning hole formed on the side wall of the end of the hook portion of the hook 24, and the other end of the torsion spring 27 is pressed against the inner side surfaces of the front and rear side bending arms of the bending part, and the outer side wall of the upper end of the bent part is pressed against the inner side wall of the bottom end of the vertical baffle 25.

[0031] This structure ensures that after the hanging ring of the heavy object is hung on the hook 24, the outer side of the upper end of the limiting member 26 is pressed against the inner side wall of the bottom end of the vertical baffle 25, so that the hanging ring of the heavy object will not move out of the hook 24, greatly improving its stability and safety during transportation.

[0032] When hanging heavy objects, the hanging ring of the heavy objects can flip the limit piece 26 downward and compress the torsion spring 27 until the hanging ring of the heavy objects is removed from the limit piece 26 and is completely hung on the hook 24. At this time, the limit piece 26 is flipped upward through the elastic recovery of the torsion spring 27, and the outer side of the upper end of the limit piece 26 is pressed against the inner side wall of the bottom end of the vertical baffle 25 to achieve locking, so that the hanging ring on the hook 24 will not fall off the hook 24, thereby achieving a locking effect and improving transportation safety.

[0033] In this embodiment, the hanging ring for lifting, transporting and conveying a heavy object is screwed onto the heavy object through the screw portion at the bottom thereof to achieve fixation.

[0034] Finally, it should be pointed out that the above embodiments are only representative examples of the present utility model. Obviously, the present utility model is not limited to the above embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present utility model should be considered to belong to the protection scope of the present utility model.

Claims

1. A safety hook device with limited horizontal rotation, comprising a pulley block (10), side end fixing plates (11) are installed at the front and rear ends of the pulley block (10), a lower connecting block (12) is fixed between the lower parts of the two side end fixing plates (11), a rotating shaft (21) is fixed at the middle part of the top surface of the sling connecting piece (20), and the rotating shaft (21) is movably connected to the lower connecting block (12) through a bearing, characterized in that: A rotating gear (22) is fixed to the middle of the top surface of the sling connecting piece (20), the lower part of the rotating shaft (21) is inserted into the middle through hole of the rotating gear (22), and the lower outer wall of the rotating shaft (21) is welded and fixed to the inner wall of the middle through hole of the rotating gear (22); A fixed connection block (13) is provided between the left and right parts of the lower parts of the two side end fixing plates (11), the front and rear ends of the fixed connection block (13) are fixedly connected to the inner side walls of the two side end fixing plates (11), a central through hole (14) is formed in the middle of the fixed connection block (13), a positioning rod (30) is inserted into the corresponding central through hole (14), and the bottom end of the positioning rod (30) extends out of the bottom end of the central through hole (14) and is inserted into the corresponding tooth groove of the rotating gear (22) below.

2. A safety hook device with limited horizontal rotation according to claim 1, characterized in that: A radially extending edge (31) is formed on the lower outer wall of the positioning rod (30), and a compression spring (32) is inserted into the positioning rod (30), the top end of the compression spring (32) is pressed against the bottom surface of the corresponding fixed connection block (13), and the bottom end of the compression spring (32) is pressed against the top surface of the radially extending edge (31); The top end of the positioning rod (30) extends out of the top surface of the corresponding fixed connection block (13) and is formed with an upper limit block (33), and the outer diameter of the upper limit block (33) is larger than the inner diameter of the central through hole (14).

3. A safety hook device with limited horizontal rotation according to claim 2, characterized in that: An annular protrusion (311) is formed on the top surface of the edge of the radially extending edge (31), and the lower part of the compression spring (32) is inserted into the annular protrusion (311).

4. A safety hook device with limited horizontal rotation according to claim 1, characterized in that: A guide sleeve (1) is clamped on the inner wall of the central through hole (14), the top end of the guide sleeve (1) extends out of the top surface of the fixed connection block (13), and a radially extending edge is formed on the outer wall thereof, the top surface of the edge is pressed against the top surface of the fixed connection block (13), and the positioning rod (30) is inserted into the guide sleeve (1), and the outer wall of the positioning rod (30) is close to or in close contact with the inner wall of the guide sleeve (1).

5. A safety hook device with limited horizontal rotation according to claim 2, characterized in that: The bottom surface of the radially extending edge (31) is pressed against the top surface of the rotating gear (22).

6. A safety hook device with limited horizontal rotation according to claim 2, characterized in that: A horizontal connecting plate (23) is fixed to the middle of the bottom surface of the bottom plate of the sling connecting piece (20), and a hanging hook (24) is fixed to the bottom surface of the horizontal connecting plate (23).

7. A safety hook device with limited horizontal rotation according to claim 6, characterized in that: A vertical baffle (25) is fixed to the bottom surface of the horizontal connecting plate (23) above the end of the hook portion of the hook (24), and a limiting member (26) is movably connected to the end of the hook portion of the hook (24), and the outer side of the upper end of the limiting member (26) is pressed against the inner side wall of the bottom end of the vertical baffle (25).

8. A safety hook device with limited horizontal rotation according to claim 7, characterized in that: The C-shaped bent part of the limiting member (26) has its two ends inserted into the two ends of the through holes extending forward and backward formed in the middle of the end of the hook part of the hook (24), and the bent parts at both ends of the bent part are inserted with torsion springs (27). One end of the torsion spring (27) is clamped in the positioning hole formed on the side wall of the end of the hook part of the hook (24), and the other end of the torsion spring (27) is pressed against the inner side surfaces of the front and rear side bending arms of the bending part, and the outer side wall of the upper end of the bent part is pressed against the inner side wall of the bottom end of the vertical baffle (25).

Images