CN116239003A - Self-locking lifting hook - Google Patents
Self-locking lifting hook Download PDFInfo
- Publication number
- CN116239003A CN116239003A CN202211472378.2A CN202211472378A CN116239003A CN 116239003 A CN116239003 A CN 116239003A CN 202211472378 A CN202211472378 A CN 202211472378A CN 116239003 A CN116239003 A CN 116239003A
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- CN
- China
- Prior art keywords
- pull rod
- locking
- hook
- self
- locking seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
- B66C1/36—Crane hooks with means, e.g. spring-biased detents, for preventing inadvertent disengagement of loads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hooks, Suction Cups, And Attachment By Adhesive Means (AREA)
Abstract
The invention provides a self-locking lifting hook which comprises a self-locking lifting hook main body and a pull rod safety mechanism. The lower end of the shackle is movably connected with two connecting sheets, the other ends of the two connecting sheets are movably connected with one ends of two straight line sections of the hook body, the two hook bodies are crossed and movably connected at the joint of the straight line sections and the arc sections, the hook body is formed, and the hook body can be tightened in a natural state and has a self-locking function; the pull rod safety mechanism includes: locking seat I, locking seat II, pull rod sleeve, spring, locking seat I and locking seat II are fixed on the shank straightway, and pull rod one end and locking seat I swing joint and can rotate around it, and the pull rod other end inserts in the pull rod sleeve and the cover spring, and the spring precompression can compress tightly the pull rod sleeve when safety mechanism is in the locking position on the locking face of locking seat II, the pull rod sleeve can wind the pull rod is outwards rotated with locking seat I's junction and is unlocked, realizes the second grade insurance of lifting hook.
Description
Technical Field
The invention relates to the field of machinery, in particular to a self-locking lifting hook.
Background
The lifting hooks used in the industry are mostly universal single hooks such as American goods hooks, and the lifting hooks are required to be used with lifting appliances such as lifting ropes and hanging baskets, and the number of lifting hooks for directly lifting the lifting objects with specific shapes is very small. With the development of modern industry, there is a greater demand for subdivision of hooks, and for cylindrical weights that need single loading and carrying, the special self-locking integrated hook has high efficiency and good reliability, and has greater advantages.
Disclosure of Invention
The purpose of the invention is that: aiming at the existing problems, the invention provides a portable lifting hook with self-locking function, which can be opened and closed quickly and is used for lifting cylindrical weights such as logs, metal pipes and the like.
The invention provides a self-locking lifting hook, comprising: a self-locking hook body and a pull rod safety mechanism;
the self-locking hook body includes: the device comprises a shackle, two connecting sheets and two hook bodies;
the hook body comprises a straight line section and an arc section arranged at one end of the straight line section;
the lower ends of the shackles are movably connected with one ends of two connecting pieces, the other ends of the two connecting pieces are movably connected with one ends of two hook body straight line sections, and the two hook bodies are crossed and movably connected at the joint of the straight line sections and the arc sections;
the pull rod safety mechanism is used for keeping the two hook bodies in a closed state.
As a preferred embodiment of the present invention, the lever safety mechanism includes: the locking seat I, the locking seat II, the pull rod sleeve and the spring;
the locking seat I and the locking seat II are respectively arranged on the straight line sections of the two hook bodies, one end of the pull rod is movably connected with the locking seat I, the other end of the pull rod is inserted into the pull rod sleeve, a spring is sleeved on the pull rod positioned in the pull rod sleeve, one end of the spring is abutted against a shaft shoulder in the pull rod sleeve, and the other end of the spring is abutted against a limiting plate arranged in the pull rod sleeve;
when the pull rod safety mechanism is in a locking position, the spring is precompressed, so that the pull rod sleeve is pressed on a locking surface of the locking seat II; the pull rod sleeve can rotate outwards around the joint of the pull rod and the locking seat I and is separated from the locking surface of the locking seat II, and the pull rod safety mechanism is in an unlocking position at the moment.
As a preferable mode of the invention, the upper side and the lower side of the locking surface of the locking seat II are respectively provided with a bulge, and the pull rod sleeve is provided with a groove matched with the bulge in shape at the corresponding position of the bulge.
As a preferable mode of the invention, the inner cambered surface of the arc-shaped section of the hook body is provided with a clamping piece, the clamping piece is an arc-shaped plate, and the width of the clamping piece is larger than that of the arc-shaped section of the hook body.
As a preferred mode of the invention, the outer cambered surface of the hook body cambered section is provided with a handle.
As a preferable mode of the invention, one end of the pull rod, which is close to the locking seat II, is provided with a limiting screw hole, the inner circumferential surface of the pull rod sleeve is provided with a sliding groove in a position corresponding to the limiting screw hole, the limiting screw is inserted and installed in the limiting screw hole, and the protruding part can move along the sliding groove.
As a preferable mode of the invention, the locking seat I and the locking seat II are of U-shaped structures, and the openings of the locking seat I and the locking seat II face outwards.
The beneficial effects are that:
(1) According to the self-locking hook, the connecting piece is connected with the hook body through the pin, the hook can be tightened in a natural sagging state, and the greater the gravity of a lifted object is, the greater the clamping force of the hook body on the lifted object is, and the hook body has a self-locking function.
(2) According to the invention, the pull rod safety mechanism is arranged on the hook body, the spring in the pull rod sleeve ensures that the pull rod sleeve always props against the locking seat II in a natural state, and the circular groove arranged on the pull rod sleeve is matched with the bulge arranged on the locking seat II, so that the pull rod sleeve and the locking seat II cannot be separated when propped up tightly, and the pull rod safety mechanism realizes the secondary safety of the lifting hook.
(3) The inner cambered surface of the hook body cambered section is provided with the clamping piece, and the contact area between the clamping piece and a lifted object is increased, so that the lifting is more stable.
(4) The handle is arranged on the outer cambered surface of the arc section of the hook body, so that an operator can pull the hook body open in the operation process conveniently.
(5) The limiting screw hole is formed in the pull rod, the sliding groove is formed in the light hole A of the pull rod sleeve, the protruding portion moves in the sliding groove of the light hole A after the limiting screw is inserted into the limiting screw hole, radial rotation of the pull rod sleeve can be limited, and the situation that the groove of the pull rod sleeve is not aligned with the protrusion of the locking seat II is prevented.
Drawings
FIG. 1 is an overall schematic of the present invention;
FIG. 2 is a force-bearing schematic diagram of the present invention;
FIG. 3 is a top view of the pull rod safety mechanism of the present invention in a locked state;
FIG. 4 is a cross-sectional view of the pull rod safety mechanism of the present invention in a locked state;
FIG. 5 is a cross-sectional view of the pull rod safety mechanism of the present invention in an unlocked state;
wherein: 1-shackle; 2-connecting sheets; 4-hook body; 5-clamping pieces; 6-a handle; 7, locking a seat I; 8-a locking seat II; 9-a pull rod; 10-a pull rod sleeve; 11-limit screws; 12-a spring; 13-limiting plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1:
for ease of explanation, the terms "upper," "lower," "left," "right," "inner," and "outer" are used to describe features of the exemplary embodiments with reference to the locations of these features as shown in the figures. In the drawings, the direction perpendicular to the paper surface is outward.
The self-locking lifting hook of the embodiment comprises a self-locking lifting hook main body and a pull rod safety mechanism. The self-locking lifting hook main body comprises a shackle 1, a connecting sheet 2 and a hook body 4, and the pull rod safety mechanism comprises a locking seat I7, a locking seat II 8, a pull rod 9 and a pull rod sleeve 10.
Wherein the hook body 4 is provided with a straight line section and an arc section arranged at one end part of the straight line section;
referring to fig. 1, a shackle 1 is a lifting point of the self-locking lifting hook, one end of two connecting sheets 2 is movably connected to the lower end of the shackle 1 through a pin, and the other end is movably connected with one ends of straight line sections of two hook bodies 4 through pins respectively; the two hook bodies 4 are crossed at the joint of the straight line section and the arc section and are movably connected through pins, so that the intrados of the arc sections of the two hook bodies 4 are opposite to form a circular clamping hook; referring to fig. 2, when lifting, the shackle 1 is used as a lifting point to be subjected to upward force, when the shackle is subjected to upward lifting force, the two hook bodies 4 are clamped inwards, the greater the gravity of a lifted object is, the greater the clamping force of the hook bodies 4 on the lifted object is, the two hook bodies 4 cannot generate a tendency of separation, namely, the shackle has self-locking capability, after the lifting is completed, the upward lifting force of the shackle 1 is removed, the self-locking of the lifting hook is released, and the lifting hook can be easily taken down;
the clamping pieces 5 are welded or riveted on the inner cambered surfaces of the arc-shaped sections of the two hook bodies 4, the clamping pieces 5 are arc-shaped plates, the width of each clamping piece 5 is larger than that of the arc-shaped section of the hook body 4, and the contact area of the article can be enlarged and hoisted by the inner cambered surfaces of the clamping pieces 5; the handles 6 are welded or riveted on the outer cambered surfaces of the arc-shaped sections of the two hook bodies 4, so that an operator can conveniently pull the hooks open when the self-locking of the hooks is released; the self-locking lifting hook body is formed by the parts, and the cylindrical weight is hooked by the circular clamping hook, so that the lifting function of the cylindrical weight can be realized.
Referring to fig. 3, the pull rod safety mechanism adopts a spring self-resetting structure, the locking seat I7 and the locking seat ii 8 are of U-shaped structures, and are respectively fixedly connected on the straight line segments of the two hook bodies 4 through screws, and the opening sides of the locking seat I7 and the locking seat ii 8 face outwards and are positioned on the same straight line. One end of the pull rod 9 is movably connected with the locking seat I7 through a pin, and the pull rod 9 can rotate outwards in a horizontal plane around the axis of the pin connected with the locking seat I7. The other end of the pull rod 9 is inserted into a pull rod sleeve 10 positioned on the right side of the locking seat II 8, penetrates through a limiting plate 13 arranged in the pull rod sleeve 10 and is locked by a nut. The inside of the pull rod sleeve 10 is provided with a stepped hole, a light hole A and a light hole B which are gradually increased in diameter from left to right along the axis, a spring 12 is arranged in the light hole B along the axial direction, namely one end of the spring 12 props against a limiting plate 13 in the pull rod sleeve 10, the other end of the spring 12 props against a stepped surface at the junction of the light hole B and the light hole A, and initially, the spring 12 is precompressed and has pretightening force.
The U-shaped structure of the locking seat II 8 is provided with semicircular bulges close to the upper side and the lower side of the pull rod sleeve 10, the pull rod sleeve 10 is provided with semicircular grooves at the corresponding positions of the bulges and matched with the semicircular bulges, so that the pull rod sleeve 10 is tightly pressed with the locking seat II 8 under the action of the pretightening force of the spring 12, and the self-locking lifting hook is prevented from loosening a lifted object.
Referring to fig. 4 and 5, a sliding groove is axially formed in the inner circumferential surface of the unthreaded hole a of the pull rod sleeve 10, a limit screw hole is formed in the pull rod 9, a protruding portion of the limit screw 11 mounted behind the limit screw hole can move along the sliding groove in the unthreaded hole a, so that the limit screw 11 can limit circumferential rotation of the pull rod sleeve 10 relative to the pull rod 9, the pull rod sleeve 10 can only move left and right along the axis of the pull rod sleeve 10, and semicircular protrusions on the locking seat ii 8 and semicircular grooves on the pull rod sleeve 10 cannot be aligned.
If the pull rod safety mechanism needs to be opened, the pull rod sleeve 10 is pulled rightwards, and horizontally rotates around the locking seat I7 to enable the pull rod sleeve 10 to leave the locking seat II 8, and the spring 12 is compressed at the moment; if the pull rod safety mechanism is required to be locked, the pull rod sleeve 10 is pulled backwards, the pull rod sleeve 10 rotates around the locking seat I7 until the pull rod sleeve 10 and the locking seat II 8 are positioned on the same plane, the semicircular bulge on the locking seat II 8 and the semicircular groove on the pull rod sleeve 10 are kept on the same horizontal line, and then the pull rod sleeve 10 is released, and the pull rod sleeve 10 is reset forwards under the action of the spring 12, so that the semicircular bulge of the locking seat II 8 is clamped into the semicircular groove at the corresponding position on the pull rod sleeve 10, and the spring 12 is precompressed under the locking state of the pull rod safety mechanism, namely the pull rod sleeve 10 is pressed on the locking seat II 8 due to precompression force of the spring 12. The pull rod safety mechanism is locked, and even if the handle 6 of the hook body 4 is pulled by external force, the lifting hook cannot be opened, so that the secondary safety of the lifting hook is realized.
Under the natural state, two shank 4 of lifting hook are closed together by gravity, and pull rod safety mechanism is in the unblock state, when need hoist and mount article, pulls handle 6 to both sides and opens the lifting hook, and the cylinder lifts by crane the thing after opening, can begin to lift by crane after locking pull rod safety mechanism, lifts by crane the completion after opening pull rod safety mechanism, and the ascending lifting force of shackle 1 is unloaded, and the lifting hook auto-lock is released, can easily take off the lifting hook.
Example 2:
based on the above example 1, further:
in this example, the included angle between the tangent line at the top end of the straight line segment and the tangent line at the top end of the arc segment of the hook body 4 is 120 °, and the clamping force of the hook body 4 can be controlled by controlling the distance between the pins at the two ends of the straight line segment of the hook body 4, and in this embodiment, the distance between the pins at the two ends of the straight line segment of the hook body 4 is the same as the radius of the arc segment of the hook body 4.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (7)
1. A self-locking hook, comprising: a self-locking hook body and a pull rod safety mechanism;
the self-locking hook body includes: the device comprises a shackle, two connecting sheets and two hook bodies;
the hook body comprises a straight line section and an arc section arranged at one end of the straight line section;
the lower ends of the shackles are movably connected with one ends of two connecting pieces, the other ends of the two connecting pieces are movably connected with one ends of two hook body straight line sections, and the two hook bodies are crossed and movably connected at the joint of the straight line sections and the arc sections;
the pull rod safety mechanism is used for keeping the two hook bodies in a closed state.
2. The self-locking hook of claim 1, wherein said pull rod securing mechanism comprises: the locking seat I, the locking seat II, the pull rod sleeve and the spring;
the locking seat I and the locking seat II are respectively arranged on the straight line sections of the two hook bodies, one end of the pull rod is movably connected with the locking seat I, the other end of the pull rod is inserted into the pull rod sleeve, a spring is sleeved on the pull rod positioned in the pull rod sleeve, one end of the spring is abutted against a shaft shoulder in the pull rod sleeve, and the other end of the spring is abutted against a limiting plate arranged in the pull rod sleeve;
when the pull rod safety mechanism is in a locking position, the spring is precompressed, so that the pull rod sleeve is pressed on a locking surface of the locking seat II; the pull rod sleeve can rotate outwards around the joint of the pull rod and the locking seat I and is separated from the locking surface of the locking seat II, and the pull rod safety mechanism is in an unlocking position at the moment.
3. The self-locking lifting hook as claimed in claim 2, wherein the upper side and the lower side of the locking surface of the locking seat II are respectively provided with a protrusion, and the pull rod sleeve is provided with a groove matched with the protrusion in shape at the corresponding position of the protrusion.
4. A self-locking lifting hook as claimed in claim 1 or claim 2, wherein the intrados of the arcuate section of the shank is provided with a clip, the clip being an arcuate plate, the clip having a width greater than the width of the arcuate section of the shank.
5. A self-locking hook according to claim 1 or 2, wherein the outer arcuate surface of the arcuate section of the shank is provided with a handle.
6. A self-locking lifting hook as claimed in claim 3, wherein a limit screw hole is formed in one end of the pull rod adjacent to the locking seat ii, a slide groove is formed in the inner circumferential surface of the pull rod sleeve at a position corresponding to the limit screw hole, and a limit screw is inserted and installed in the limit screw hole and a protruding portion is movable along the slide groove.
7. A self-locking hook as claimed in claim 1 or claim 2, wherein the locking seats I and ii are each of U-shaped configuration, with the openings of the locking seats I and ii facing outwardly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211472378.2A CN116239003A (en) | 2022-11-23 | 2022-11-23 | Self-locking lifting hook |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211472378.2A CN116239003A (en) | 2022-11-23 | 2022-11-23 | Self-locking lifting hook |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116239003A true CN116239003A (en) | 2023-06-09 |
Family
ID=86630209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211472378.2A Pending CN116239003A (en) | 2022-11-23 | 2022-11-23 | Self-locking lifting hook |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116239003A (en) |
-
2022
- 2022-11-23 CN CN202211472378.2A patent/CN116239003A/en active Pending
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