High-stability crane hook

Abstract

The present application relates to the technical field of hoisting equipment, and particularly relates to a high-stability crane hook. The crane hook comprises a hook, the upper side of the hook is provided with a first adjusting seat moving along the outer wall of the hook, the outer wall of the hook is provided with a first sliding groove for limiting sliding of the first adjusting seat, and the outer wall of the first adjusting seat is slidably sleeved with a sliding sleeve for being connected with a crane. According to the design of the first adjusting seat, when there is an angle between the length direction of the crane steel wire rope and the sliding sleeve when the steel wire rope is taut, the sliding sleeve is pulled by the steel wire rope, the sliding sleeve drives the first adjusting seat to move along the first sliding groove, when the pulling force applied by the steel wire rope to the sliding sleeve is greater than the elastic force of the first tension spring, the first tooth block is engaged with the first arc-shaped toothed plate, so that the pulling force applied to the sliding sleeve is perpendicular to the top surface of the sliding sleeve, the top surface of the sliding sleeve is kept perpendicular to the length direction of the steel wire rope, the hook is subjected to vertical force, and the hook neck is prevented from being directly rubbed against the inner wall of the lifting ring to cause abrasion of the hook.

Description

Technical Field

[0001] The present invention relates to the technical field of lifting equipment, in particular to a crane hook with high stability. Background Art

[0002] Hooks are commonly used tools in lifting and handling operations, and are widely used in construction sites, port terminals, logistics warehouses and other fields. With the advancement of lifting machinery technology and the improvement of safety production requirements, the design and manufacturing process of hook slings are also constantly improving.

[0003] When the sizes of the lifting ring and the hook do not match, or the hook is not vertically aligned with the center of the lifting ring during installation, friction will occur between the hook neck and the inner wall of the lifting ring, causing wear and even deformation of the hook and the lifting ring. When the hook is lifting a long steel pipe, the long steel pipe will rotate due to the swinging effect, which will drive the hook to rub against the lifting ring or the lifting rope, which will also cause wear of the lifting ring and the wire rope, and the contact position of the lifting rope and the long steel pipe cannot be fixed. When the two contact positions of the lifting rope and the long steel pipe are different, the long steel pipe will tilt, and the long steel pipe will easily fall and be damaged, damaging public facilities and injuring staff. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a crane hook with high stability.

[0005] The technical solution is: a high-stability crane hook, including a hook, a first adjustment seat that moves along the outer wall of the hook is provided on the upper side of the hook, the outer wall of the hook has a first slide groove for the first adjustment seat to slide within a limited position, the outer wall sliding sleeve of the first adjustment seat is provided with a slide sleeve for connecting to the crane, the first adjustment seat has a first cavity for storing hydraulic oil, the bottom of the slide sleeve is fixedly connected to a first piston rod located in the first cavity, the first adjustment seat has a second cavity located at the lower side of the first cavity and connected through an oil delivery channel, a first tooth block is slidably provided in the second cavity, a first tension spring is provided between the first tooth block and the second cavity, and a first arc-shaped tooth plate that cooperates with the first tooth block is fixed in the first slide groove.

[0006] As a further preference, the curvature of the first sliding groove is equal to the curvature of the outer wall of the hook.

[0007] As a further preference, a positioning frame is provided on the hook, and its inner wall has a second sliding groove for the positioning frame to slide and limit. A first oil chamber for storing hydraulic oil is opened on the top of the positioning frame. A second piston rod is slidably connected in the first oil chamber, a second tension spring is provided between the second piston rod and the first oil chamber, and an anti-deflection block is fixed to the second piston rod.

[0008] As a further preference, the curvature of the second chute is equal to the curvature of the inner wall of the hook.

[0009] As a further preference, a pair of cylindrical holes are opened on the top of the positioning frame, and T-shaped columns fixed to the bottom of the anti-deflection block are slidably installed in the cylindrical holes.

[0010] As a further preference, a second oil chamber connected to the first oil chamber and storing hydraulic oil is symmetrically opened in the positioning frame, a second toothed block is slidably installed in the second oil chamber, a third tension spring is arranged between the second toothed block and the second oil chamber, and a second arc-shaped tooth plate cooperating with the second toothed block is fixed in the second slide groove.

[0011] As a further preference, a second adjustment seat is provided on the lower side of the second arc-shaped tooth plate, the outer wall of the hook has a third sliding groove for the second adjustment seat to slide and limit, a connecting seat is provided on the lower side of the second adjustment seat, the top of the connecting seat is fixedly connected to the first cone through a column, the bottom of the second adjustment seat has a cylindrical groove for the first cone to slide and limit, and a pair of elastic blocks that cooperate with the first cone are slidably connected in the cylindrical groove.

[0012] As a further preference, the curvature of the third sliding groove is equal to the curvature of the outer wall of the hook.

[0013] As a further preference, a second frustum is slidably provided on the outer wall of the column to cooperate with a pair of elastic blocks.

[0014] As a further preference, two groups of pins of different lengths are fixed to the top of the connecting seat, and both groups of pins slide through the second adjustment seat. The outer wall of the hook has two groups of slots for inserting the pins. Rotating rods with wire wheels are provided on both sides of the connecting seat, and limit pins are slidably provided on the top of the rotating rod. A limit hole is opened on the top of the rotating rod to match the limit pin.

[0015] The present invention has the following advantages:

[0016] 1. Through the design of the first adjusting seat of the present invention, when there is an angle between the length direction of the crane wire rope when it is taut and the sliding sleeve, the sliding sleeve can be pulled by the wire rope, so that the sliding sleeve can drive the first adjusting seat to move along the first sliding groove. When the tension applied by the wire rope to the sliding sleeve is greater than the elastic force of the first tension spring, the first tooth block can be engaged with the first arc-shaped tooth plate, so that the tension applied to the sliding sleeve is perpendicular to the top surface of the sliding sleeve. The top surface of the sliding sleeve remains perpendicular to the length direction of the wire rope. The hook is subjected to vertical force, which can prevent the hook neck from directly rubbing against the inner wall of the lifting ring and causing wear of the hook.

[0017] 2. The present invention designs the positioning frame. When the hook is tilted to the lifting ring, the positioning frame can adaptively slide along the second slide groove under the action of its own weight, so that the positioning frame and the anti-deflection block are always perpendicular. When the first tooth block is engaged with the first arc-shaped tooth plate, the hydraulic oil can enter the first oil chamber and the second oil chamber, thereby allowing the anti-deflection block to limit the lifting ring or the lifting rope, preventing the lifting ring or the lifting rope from moving in the hook and causing wear. At the same time, the second tooth block is engaged with the second arc-shaped tooth plate, thereby limiting the anti-deflection block through the positioning frame, and the lifting ring or the lifting rope is more stable under the action of the anti-deflection block. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the installation of the first arc-shaped tooth plate of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation of the first piston rod of the present invention;

[0021] Figure 4 This is a schematic diagram of the installation of the anti-deflection block of the present invention;

[0022] Figure 5 This is a schematic diagram of the installation of the second arc-shaped tooth plate of the present invention;

[0023] Figure 6 This is a schematic diagram of the installation of the second piston rod of the present invention;

[0024] Figure 7 This is a schematic diagram of the installation of the second adjustment seat of the present invention;

[0025] Figure 8 This is a schematic diagram of the installation at the first frustum of the present invention;

[0026] Figure 9 This is a schematic diagram of the installation of the rotating rod of the present invention.

[0027] Among them: 1-hook, 201-first adjustment seat, 2011-first slide, 202-sleeve, 203-first piston rod, 204-oil delivery channel, 205-first tooth block, 206-first arc-shaped tooth plate, 301-positioning frame, 3011-second slide, 302-first oil chamber, 303-second piston rod, 304-anti-deflection block, 401-T-shaped column, 501-second oil chamber, 502-second tooth block, 503-second arc-shaped tooth plate, 601-second adjustment seat, 602-third slide, 603-connecting seat, 604-column, 605-first cone, 606-elastic block, 701-second cone, 801-pin, 802-rotating rod, 803-limit pin. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to specific embodiments. It should be noted that, unless otherwise specified or limited, terms such as "dispose," "install," "connect," and "connect" should be understood in a broad sense. For example, "connect" may refer to a fixed connection, a detachable connection, or an integral connection; it may refer to a mechanical connection or an electrical connection; it may refer to a direct connection or an indirect connection through an intermediate medium; or it may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0029] Example 1

[0030] A high stability crane hook, such as Figure 1-Figure 3 As shown, it includes a hook 1, a first adjustment seat 201 is provided on the upper side of the hook 1, the outer wall of the hook 1 has a first slide groove 2011 for limiting the sliding of the first adjustment seat 201, the curvature of the first slide groove 2011 is equal to the curvature of the outer wall of the hook 1, the outer wall sliding sleeve of the first adjustment seat 201 is provided with a sliding sleeve 202 for connecting to the crane, the first adjustment seat 201 has a first cavity for storing hydraulic oil, and the bottom of the sliding sleeve 202 is fixedly connected to the first piston rod 203. The bottom end of the first piston rod 203 slides and is stuck into the first cavity. The first adjusting seat 201 has a second cavity connected by an oil delivery channel 204. The oil delivery channel 204 is L-shaped. The second cavity is located at the lower side of the first cavity. The first tooth block 205 is slidably connected in the second cavity. A first tension spring is provided between the top of the first tooth block 205 and the top of the inner wall of the second cavity. The first arc-shaped tooth plate 206 that cooperates with the first tooth block 205 is fixed in the first slide groove 2011.

[0031] Initially, the bottom end of the first piston rod 203 is against the bottom of the first cavity of the first adjustment seat 201, and there is a gap between the first tooth block 205 and the first arc-shaped tooth plate 206. The lifting ring is first hung in the hook 1. When the size of the lifting ring is larger than the size of the hook 1, or the space around the lifting ring is narrow, the lifting ring cannot be perpendicular to the hook 1, resulting in an angle between the length direction of the crane wire rope when it is tightened and the sleeve 202. At this time, the crane is started, and the crane wire rope applies a pulling force oblique to the top surface of the sleeve 202 to the sleeve 202. The sleeve 202 is forced to apply a pulling force to the first piston rod 203. It is worth noting that the elastic force of the first tension spring is relatively large. Before the wire rope is fully tightened, the pulling force applied by the wire rope to the sleeve 202 is less than the elastic force of the first tension spring. The first tooth block 205 remains stable in the second cavity and the first piston is pressed by the hydraulic oil. The first gear 205 is engaged with the first curved tooth plate 206, and the first curved tooth plate 206 limits the first adjusting seat 201 through the first gear block 205, and the first adjusting seat 201 stops moving. Figure 4 In the state shown, the top surface of the sliding sleeve 202 remains perpendicular to the length direction of the wire rope.

[0032] The above effect can be achieved by simply applying tension to the sleeve 202 through the wire rope. By making the top surface of the sleeve 202 consistent with the length direction of the wire rope, the hook 1 can be subjected to vertical force, preventing the neck of the hook 1 from directly rubbing against the inner wall of the ring and causing wear of the hook 1.

[0033] like Figure 4-Figure 6 As shown, a positioning frame 301 is provided on the hook 1, and the inner wall of the hook 1 has a second slide groove 3011 for the positioning frame 301 to slide and limit, and the curvature of the second slide groove 3011 is equal to the curvature of the inner wall of the hook 1, and a first oil chamber 302 for storing hydraulic oil is opened in the center of the top of the positioning frame 301, and the first cavity of the first adjusting seat 201 is connected to the first oil chamber 302 through a hose, and a vertical groove is opened on the left side of the sleeve 202, one end of the hose is located in the vertical groove, and the other end of the hose is located in the second slide groove 3011, and a second piston rod 303 is vertically slidably connected in the first oil chamber 302, and a second tension spring is arranged between the bottom end of the second piston rod 303 and the bottom of the inner wall of the first oil chamber 302, and an anti-deflection block 304 is fixed to the top of the second piston rod 303.

[0034] like Figure 6 As shown, cylindrical holes are symmetrically opened on the top of the positioning frame 301, and two cylindrical holes are distributed on the left and right sides of the second piston rod 303. A T-shaped column 401 fixed to the bottom of the anti-deflection block 304 is slidably installed in the cylindrical hole.

[0035] like Figure 5 and Figure 6 As shown, a second oil chamber 501 connected to the first oil chamber 302 and storing hydraulic oil is symmetrically opened in the positioning frame 301, and the two second oil chambers 501 are distributed on the left and right sides of the first oil chamber 302. A second toothed block 502 is vertically slidably installed in the second oil chamber 501, and a third tension spring is arranged between the top of the second toothed block 502 and the inner top of the second oil chamber 501. A second arc-shaped tooth plate 503 that cooperates with the second toothed block 502 is fixed in the second slide groove 3011.

[0036] When the hook 1 is tilted to the lifting ring, the positioning frame 301 slides adaptively along the second slide groove 3011 under the action of its own weight, and drives the anti-deflection block 304 to move through the second piston rod 303, so that the positioning frame 301 and the anti-deflection block 304 are always vertical, and the anti-deflection block 304 is always located on the lower side of the contact point between the hook 1 and the lifting ring. When the first tooth block 205 is engaged with the first arc-shaped tooth plate 206, the hydraulic oil can no longer enter the second cavity of the first adjustment seat 201, and the first piston rod 203 continues to move and pushes the hydraulic oil into the first oil chamber 302 through the hose. The hydraulic oil applies thrust to the second piston rod 303, so that the second piston rod 303 drives the anti-deflection block 304 to move upward, and the anti-deflection block 304 drives the two T-shaped columns 401 slides upward along a pair of cylindrical holes of the positioning frame 301, and the anti-deflection block 304 contacts the lifting ring or the lifting rope after movement. The V-shaped surface on the top of the anti-deflection block 304 can limit the lifting ring or the lifting rope to prevent the lifting ring or the lifting rope from moving in the hook 1 and causing wear. Then the T-shaped column 401 is against the top of the cylindrical hole, and the second piston rod 303 passes over the connection between the first oil chamber 302 and the second oil chamber 501. The hydraulic oil enters the two second oil chambers 501 and pushes the second toothed block 502 to slide downward. After the second toothed block 502 moves, it engages with the second arc-shaped tooth plate 503, thereby limiting the anti-deflection block 304 through the positioning frame 301, so that the lifting ring or the lifting rope is more stable under the action of the anti-deflection block 304.

[0037] After the lifting is completed, the wire rope is released by the crane, and the wire rope no longer applies tension to the sleeve 202. Since the elastic force of the third tension spring is greater than the elastic force of the second tension spring, and the elastic force of the second tension spring is greater than the elastic force of the first tension spring, the third tension spring first contracts to drive the second toothed block 502 to reset. The hydraulic oil in the second oil chamber 501 flows back to the first cavity of the first adjusting seat 201 through the first oil chamber 302 and the hose under the action of the second toothed block 502. Then, the second tension spring contracts and drives the anti-deflection block 304 to reset through the second piston rod 303. The hydraulic oil in the first oil chamber 302 flows back to the first cavity of the first adjusting seat 201 through the first oil chamber 302 and the hose under the action of the second piston rod 303. Then, the first tension spring contracts to drive the first toothed block 205 to reset. The hydraulic oil in the second cavity flows back to the first cavity through the oil transfer channel 204 under the action of the first toothed block 205. The first piston rod 203 drives the sleeve 202 to reset under the action of the hydraulic oil.

[0038] like Figure 7-Figure 9 As shown, a second adjusting seat 601 is provided on the lower side of the second arc-shaped tooth plate 503, and the outer wall of the hook 1 has a third slide groove 602 for the second adjusting seat 601 to slide and limit. The curvature of the third slide groove 602 is equal to the curvature of the outer wall of the hook 1, and a connecting seat 603 is provided on the lower side of the second adjusting seat 601. The connecting seat 603 is fixedly connected to the column 604, and the top of the column 604 is fixedly connected to the first cone 605. A cylindrical groove is provided in the center of the bottom of the second adjusting seat 601, and the first cone 605 slides into the cylindrical groove. The cylindrical groove is symmetrically slidably connected with an elastic block 606 that cooperates with the first cone 605. The outer wall of the column 604 is vertically slidably provided with a second cone 701 that cooperates with a pair of elastic blocks 606.

[0039] like Figure 8 and Figure 9 As shown, two groups of pins 801 of different lengths are fixed to the top of the connecting seat 603, and the front and rear opposite pins 801 form a pair. Both groups of pins 801 slide through the second adjustment seat 601. Two groups of slots for inserting the pins 801 are provided at the bottom and left side of the outer wall of the hook 1, with four in each group. Rotating rods 802 are hinged on both sides of the connecting seat 603, and one end of the rotating rod 802 is rotatably connected to the wire wheel. A limit pin 803 is slidingly provided on the top of the connecting seat 603, and a limit hole matching the limit pin 803 is provided on the top of the rotating rod 802.

[0040] Initially, the second adjustment seat 601 is located directly below the hook 1, and the two groups of pins 801 are inserted into a group of slots at the bottom of the hook 1. The bottom end of the first cone 605 is against the top of the two elastic blocks 606. When it is necessary to use a lifting rope to lift a long steel pipe or a lifting object that cannot be fixed at other lifting points, the lifting rope is placed on the pulleys of the two rotating rods 802 respectively. During the lifting process, if the lifting point of the lifting rope and the lifting object slips, the two pulleys can limit the bending point of the lifting rope to prevent the lifting point of the lifting rope from slipping to the center of the lifting object, making it easy to balance the lifting object.

[0041] When it is necessary to hoist through the lifting ring, push the connecting seat 603 upward, and the connecting seat 603 drives the first cone 605 and the second cone 701 to slide upward through the column 604. After the second cone 701 slides, it contacts the inclined surfaces of the two elastic blocks 606 and pushes the two elastic blocks 606 away from each other until the top of the second cone 701 passes over the inclined surfaces of the two elastic blocks 606. The elastic blocks 606 slide back to their original position and apply thrust to the conical surface of the second cone 701, so that the second cone 701 slides upward along the column 604. 01 slides and contacts the bottom end of the first cone 605, and then the connecting seat 603 is quickly pulled downward, and the connecting seat 603 drives the first cone 605 to move downward quickly through the column 604, and the first cone 605 drives the second cone 701 to move downward quickly. When the second cone 701 moves downward quickly, it pushes the two elastic blocks 606 to move away from each other. Since the first cone 605 and the second cone 701 are contacted at this time, the two elastic blocks 606 cannot contact the bottom end of the first cone 605, so that the first cone 605 can continue to move downward. At this time, the second cone 701 01 slides downward along the column 604 under the influence of its own weight, and a gap is generated between it and the first cone 605. At the same time, the connecting seat 603 drives the two sets of pins 801 to disengage from the slots on the lower side of the hook 1, and then pushes the second adjustment seat 601 upward along the third slide 602 until the second adjustment seat 601 contacts the end of the third slide 602, and then pushes the connecting seat 603. The connecting seat 603 drives the first cone 605 through the column 604 to push the two elastic blocks 606 away from each other until the bottom end of the first cone 605 passes over the two elastic blocks. 606, the two elastic blocks 606 slide back to their original position and abut against the bottom end of the first cone 605, so that the gap between the connecting seat 603 and the second adjustment seat 601 no longer changes. At the same time, the two sets of pins 801 are inserted into the slots on the left side of the hook 1, and then the limit pin 803 is lifted upward to disengage the limit pin 803 from the limit hole of the rotating rod 802, and the two rotating rods 802 are rotated ninety degrees to the left, and then the limit pin 803 is inserted into the limit hole of the rotating rod 802, thereby completing the storage of the rotating rod 802, so that the hook 1 can be hoisted through the lifting ring.

[0042] Although the present disclosure has been shown and described with reference to certain exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made to the present disclosure without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be determined not only by the appended claims but also by the equivalents of the appended claims.

Claims

1. A high-stability crane hook, comprising a hook (1), characterized in that: The upper side of the hook (1) is provided with a first adjustment seat (201) that moves along the outer wall of the hook (1), the outer wall of the hook (1) is provided with a first slide groove (2011) for limiting the sliding of the first adjustment seat (201), the outer wall sliding sleeve of the first adjustment seat (201) is provided with a slide sleeve (202) for connecting with the crane, the first adjustment seat (201) has a first cavity for storing hydraulic oil, the bottom of the slide sleeve (202) is fixedly connected to a first piston rod (203) located in the first cavity, the first adjustment seat (201) has a second cavity located at the lower side of the first cavity and connected through an oil delivery channel (204), the second cavity is provided with a first tooth block (205) slidingly arranged, a first tension spring is provided between the first tooth block (205) and the second cavity, and the first slide groove (2011) is fixedly connected to a first arc-shaped tooth plate (206) that matches the first tooth block (205); The hook (1) is provided with a positioning frame (301), the inner wall of which has a second slide groove (3011) for the positioning frame (301) to slide and limit, the top of the positioning frame (301) is provided with a first oil chamber (302) for storing hydraulic oil, a second piston rod (303) is slidably connected in the first oil chamber (302), a second tension spring is provided between the second piston rod (303) and the first oil chamber (302), and an anti-deflection block (304) is fixedly connected to the second piston rod (303); a pair of cylindrical holes are provided on the top of the positioning frame (301), and a T-shaped column (401) fixedly connected to the bottom of the anti-deflection block (304) is slidably installed in the cylindrical holes; A second oil chamber (501) is symmetrically opened in the positioning frame (301), which is connected to the first oil chamber (302) and stores hydraulic oil. A second toothed block (502) is slidably installed in the second oil chamber (501). A third tension spring is provided between the second toothed block (502) and the second oil chamber (501). A second arc-shaped toothed plate (503) that matches the second toothed block (502) is fixedly connected in the second slide groove (3011).

2. A high-stability crane hook according to claim 1, characterized in that: The curvature of the first sliding groove (2011) is equal to the curvature of the outer wall of the hook (1).

3. The high-stability crane hook according to claim 1, characterized in that: The curvature of the second sliding groove (3011) is equal to the curvature of the inner wall of the hook (1).

4. The high-stability crane hook according to claim 1, characterized in that: A second adjustment seat (601) is provided on the lower side of the second arc-shaped tooth plate (503), and the outer wall of the hook (1) has a third sliding groove (602) for the second adjustment seat (601) to slide and limit. A connecting seat (603) is provided on the lower side of the second adjustment seat (601), and the top of the connecting seat (603) is fixedly connected to the first cone (605) through a column (604). The bottom of the second adjustment seat (601) has a cylindrical groove for the first cone (605) to slide and limit, and a pair of elastic blocks (606) that match the first cone (605) are slidably connected in the cylindrical groove.

5. A high-stability crane hook according to claim 4, characterized in that: The curvature of the third sliding groove (602) is equal to the curvature of the outer wall of the hook (1).

6. The high-stability crane hook according to claim 4, characterized in that: The outer wall of the column (604) is slidably provided with a second frustum (701) that matches a pair of elastic blocks (606).

7. The high-stability crane hook according to claim 4, characterized in that: Two groups of pins (801) of different lengths are fixed to the top of the connecting seat (603), and the two groups of pins (801) slide through the second adjustment seat (601). The outer wall of the hook (1) has two groups of slots for the pins (801) to be inserted. Rotating rods (802) with wire wheels are provided on both sides of the connecting seat (603), and a limiting pin (803) is slidably provided on the top of the rotating rod (802). A limiting hole is opened on the top of the rotating rod (802) to match the limiting pin (803).

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