Lifting hook for crane
By designing an automated crane hook, the hook opening can be automatically opened and closed by the function of the hanging object itself, the troublesome problem of manually operating the anti-disengagement device in the prior art is solved, and the work efficiency and the anti-hook are improved. The performance is de-enforced, reducing the occurrence of safety accidents.
Patent Information
- Application Number
- CN202411716313.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-02-14
AI Technical Summary
In the prior art, the hook needs to manually operate the anti-detachment device to open the hook opening, which is troublesome and reduces work efficiency. In long-term use and complex construction site environments, the anti-detachment performance of the hook is insufficient, which increases the disengagement of the hanging object. risk.
A crane hook is designed to automatically open and close the hook opening through the effect of the hanging object on the adjustment plate. The hook includes components such as hook body, straight handle, locking hook, spring, adjustment plate, adjustment plate and fixing plate, through the synergy of locking hook, fixing plate, torsion spring, pressing plate, adjustment plate, adjustment plate and spring , realize automated opening and closing operations.
The operation process is simplified, the working efficiency of the crane during the lifting process is improved, and through the automated locking mechanism, the hook is secured under various working conditions, and the safety accidents caused by the fall of the hanging object is reduced.
Smart Images
Figure CN119429944A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of hoisting equipment, and in particular relates to a hook for a crane. Background Art
[0002] In highway construction projects, cranes are indispensable and important mechanical equipment. They mainly use hooks to lift various types of construction materials, construction tools, prefabricated components and other suspended objects to achieve efficient connection and operation of different construction links. During the use of the hook, the suspended objects sometimes accidentally detach from the hook. The main reasons for the detachment are as follows: 1. The hook itself lacks an effective anti-detachment device, or the reliability of the anti-detachment device is poor. During the crane lifting process, due to the vibration, shaking of the equipment and the uneven distribution of the dead weight of the suspended objects, the suspended objects gradually slip out of the hook opening. 2. During long-term and high-intensity use, the hook may be worn and deformed, which will greatly weaken the load-bearing capacity and restraint effect of the hook on the suspended objects, further increasing the risk of the suspended objects detaching. 3. The complex environment of the highway construction site (such as dust, mud, rain, etc., which erodes and pollutes the hook and related connection parts) may also affect the stability and reliability of the connection between the hook and the suspended objects, indirectly leading to the occurrence of suspended object detachment accidents.
[0003] Once the hanging object detaches from the hook, it will often cause serious safety accidents at the busy construction site of highway construction, posing a direct threat to the life safety of construction workers. It may also damage the surrounding construction equipment, completed highway infrastructure and building structures under construction, etc., causing huge economic losses to the highway construction project, delaying the construction progress and affecting the smooth progress and on-time delivery of the entire project.
[0004] In the prior art, most of the anti-dropping devices are realized by a locking hook on the hook body, and a torsion spring is provided at the connection between the locking hook and the hook body. When in use, the locking hook is manually pressed down (part of it can be opened automatically under the pressure of the hanging object) to open the hook opening. After the object is hung on the hook, the locking hook is reset to lock the hook opening to prevent it from falling off; when the hanging object is hoisted to the specified position, the locking hook is pressed down again to open the hook opening, and the hook is pulled to separate it from the hanging object. The use process of this anti-dropping device requires manual pressing of the locking hook to open the hook opening, which is more troublesome to operate and reduces work efficiency. Summary of the invention
[0005] The present invention is intended to provide a crane hook to solve the problem in the prior art that the hook needs to be manually operated with an anti-drop device to open the hook opening.
[0006] A crane hook in the present scheme comprises a hook body, a straight handle and a locking hook house, the straight handle and the hook body are integrally formed; a mounting block is fixedly connected to the straight handle, a spring is fixedly connected to the mounting block, the free end of the spring is fixedly connected to an adjusting plate, the adjusting plate is vertically slidably connected to the mounting block, the adjusting plate is located at the side of the hook body, and one end of the adjusting plate away from the spring is fixedly connected to an adjusting piece, and in an initial state, the adjusting piece is located above the inner bottom of the bent part of the hook body; the locking hook house is rotatably connected to the mounting block, a torsion spring is provided at the connection between the locking hook house and the mounting block, one end of the locking hook house connected to the mounting block is fixedly connected to a fixing plate, and one end of the adjusting plate connected to the spring is fixedly connected to a pressing plate for pressing down the fixing plate, a sliding groove for passing the pressing plate is provided in the mounting block, a notch is provided for installing and deflecting the locking hook house, and an avoidance hole is provided for deflecting the fixing plate, and the avoidance hole, the notch and the sliding groove are connected.
[0007] The working principle and beneficial effects of this solution are as follows: in the initial state, the spring is in a natural state, the adjustment plate is kept in a certain position under the action of the spring, and the adjustment plate is located above the inner bottom of the hook body bend. The locking hook is in an open state under the action of the torsion spring.
[0008] When the hook is lowered to prepare for hanging objects, the rope that fixes the hanging objects can quickly enter the opening of the hook body and then enter the curved part of the hook body. During this process, the rope first presses down the adjustment plate, which drives the adjustment plate to overcome the spring force and slide vertically downward until the top of the adjustment plate is flush with the inner bottom of the curved part of the hook body. During the downward movement of the adjustment plate, the pressure plate at one end of the adjustment plate moves downward with the adjustment plate, and then presses down the fixed plate on the locking hook. As the fixed plate is pressed down, the locking hook overcomes the elastic force of the torsion spring and rotates, so that the free end of the locking hook locks the opening of the hook body to prevent the hanging objects from falling off.
[0009] When the hanging object is hoisted to the fixed position, the hook drops, the hanging object no longer presses down the adjustment plate, the spring recovers its deformation, pulls the adjustment plate upward, the pressure plate no longer presses down the fixed plate, and the adjustment plate rises to its initial position. Under the action of the torsion spring, the locking hook is reset to open the hook opening; the hook is removed from the hanging object to complete the unloading.
[0010] The hook of this solution automatically opens and closes the hook opening through the effect of the hanging object itself on the adjusting piece, which simplifies the operation process and improves the work efficiency of the crane during the lifting process. In addition, through the coordinated effect of the locking hook, fixed plate, torsion spring, pressure plate, adjusting plate, adjusting piece and spring, the hook is reliably locked under various working conditions, reducing safety accidents caused by the falling of hanging objects at the construction site.
[0011] Furthermore, a blind hole is provided at the bottom of the mounting block, the spring is fixedly connected in the blind hole, the adjustment plate is vertically slidably connected in the blind hole, and the blind hole is connected to the slide groove. The blind hole plays a good role in positioning and protecting the spring, preventing the spring from being offset or disengaged during operation, and ensuring that the spring always works in the correct position. The adjustment plate slides vertically in the blind hole, and the inner wall of the blind hole limits the movement direction of the adjustment plate, so that it can only move accurately in the vertical direction.
[0012] Furthermore, the adjustment plate is "L" shaped, the top of the vertical section of the adjustment plate is fixedly connected to the spring, the upper surface of the horizontal section of the adjustment plate is fixedly connected to a connecting plate, and the other end of the connecting plate is fixedly connected to the adjustment sheet. The "L" shaped adjustment plate can well transmit the expansion and contraction force of the spring to the adjustment sheet. The deformation force of the spring is transmitted to the horizontal section through the vertical section of the adjustment plate, and then transmitted to the adjustment sheet through the connecting plate, thereby ensuring the efficiency and stability of force transmission and ensuring that the adjustment sheet can respond to changes in the spring in a timely manner.
[0013] Furthermore, the hook body is provided with a groove near its opening, and the free end of the locking hook is provided with a protrusion used in conjunction with the groove. When the locking hook is closed, the protrusion at the free end closely matches the groove at the hook opening, forming a mechanical interlocking structure, which can effectively prevent the locking hook from accidentally opening when the hook bears a heavy object, greatly enhancing the anti-slip performance of the hook and ensuring the safety of the lifting process.
[0014] Furthermore, two opposite sides of the locking hook are fixedly connected with rotating shafts, and the two rotating shafts are respectively rotatably connected to the walls on both sides of the notch, and the torsion spring is arranged at the connection between the rotating shaft and the wall. Based on the automatic reset mechanism of the torsion spring, after the hook completes the hoisting operation of the hanging object, the locking hook can be quickly and reliably reset.
[0015] Furthermore, a reinforcing plate is detachably connected to the mounting block, and the reinforcing plate is attached to the lower surface of the hook body. The bending part of the hook body is the part most prone to deformation and fracture. By setting the reinforcing plate, when the hook bears a heavy object, the reinforcing plate can share part of the stress borne by the hook body. It plays the role of auxiliary support, effectively enhances the carrying capacity of the hook body, and prevents the hook body from being deformed or damaged due to long-term stress. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a front view of a crane hook according to Embodiment 1 of the present invention;
[0017] Figure 2 for Figure 1 A partial cross-sectional view of
[0018] Figure 3 This is a partial cross-sectional view of a crane after a hanging object is hoisted by a hook in Example 1 of the present invention;
[0019] Figure 4 This is a front view of a crane hook after hoisting a suspended object in accordance with Embodiment 2 of the present invention. DETAILED DESCRIPTION
[0020] The following is further described in detail through specific implementation methods:
[0021] The figure marks in the drawings of the specification include: mounting block 1, adjustment plate 2, hook body 3, adjustment sheet 4, connecting plate 5, groove 6, locking hook 7, rotating shaft 8, notch 9, torsion spring 10, fixing plate 11, spring 12, pressure plate 13, avoidance hole 14, reinforcement plate 15.
[0022] Embodiment 1 is basically as attached Figures 1-2 As shown: a crane hook comprises a hook body 3, a straight handle and a locking hook house 7, wherein the straight handle is integrally formed with the hook body 3; a mounting block 1 is fixedly connected to the straight handle, the cross section of the mounting block 1 is rectangular, and the straight handle is located on the center line of the mounting block 1; a notch 9 is provided on the side of the mounting block 1, a blind hole is provided on the bottom of the mounting block 1, a slide groove and an avoidance hole 14 are provided in the mounting block 1, the avoidance hole 14 is located between the notch 9 and the blind hole and the two are connected, the slide groove is located above the avoidance hole 14, and the slide groove, the avoidance hole 14 and the blind hole are connected.
[0023] A spring 12 is fixedly connected in the blind hole, and an adjusting plate 2 is fixedly connected to the free end of the spring 12. The adjusting plate 2 is "L"-shaped, and the top of the vertical section of the adjusting plate 2 is fixedly connected to the spring 12. A connecting plate 5 is fixedly connected to the upper surface of the horizontal section of the adjusting plate 2, and an adjusting piece 4 is fixedly connected to the other end of the connecting plate 5. The vertical section of the adjusting plate 2 is vertically slidably connected in the blind hole, and the adjusting plate 2 is located at the side of the hook body 3. In the initial state, the adjusting piece 4 is located above the inner bottom of the curved part of the hook body 3.
[0024] The locking hook 7 is fixedly connected with a rotating shaft 8 on both opposite sides, and the two rotating shafts 8 are respectively rotatably connected to the wall bodies on both sides of the notch 9, and a torsion spring 10 is sleeved at the connection between the rotating shaft 8 and the wall body; one end of the locking hook 7 connected to the rotating shaft 8 is fixedly connected with a fixing plate 11, and the end of the adjustment plate 2 connected to the spring 12 is fixedly connected with a pressing plate 13 for pressing down the fixing plate 11, and the pressing plate 13 is located in the slide groove; the hook body 3 is provided with a groove 6 near its opening, and the free end of the locking hook 7 is provided with a protrusion for use therewith.
[0025] The specific implementation process is as follows: in the initial state, the spring 12 is in a natural state, the adjustment plate 2 is kept in a certain position under the action of the spring 12, the adjustment piece 4 is located above the inner bottom of the curved part of the hook body 3, and the locking hook 7 is in an open state (such as Figure 1 and Figure 2 shown).
[0026] When the hook is lowered to prepare for hanging objects, the rope that fixes the hanging object can quickly enter the opening of the hook body 3, and then enter the bend of the hook body 3. During this process, the rope first presses down the adjustment plate 4, and the adjustment plate 4 drives the adjustment plate 2 to overcome the force of the spring 12 and slide vertically downward until the top of the adjustment plate 4 is flush with the inner bottom of the bend of the hook body 3. During the downward movement of the adjustment plate 2, the pressure plate 13 at one end of the adjustment plate 2 moves downward with the adjustment plate 2, and then presses down the fixed plate 11 on the locking hook house 7. As the fixed plate 11 is pressed downward, the locking hook house 7 overcomes the elastic force of the torsion spring 10 and rotates, so that the free end of the locking hook house 7 locks the opening of the hook body 3. At this time, the protrusion at the free end of the locking hook house 7 is tightly matched with the groove 6 at the opening of the hook body 3, forming a mechanical interlocking structure to prevent the hanging object from falling off (such as Figure 3 shown).
[0027] When the suspended object is hoisted to the fixed position, the hook is lowered, the suspended object no longer presses down the adjustment plate 4, the spring 12 recovers its deformation, pulls the adjustment plate 2 upward, the pressure plate 13 no longer presses down the fixed plate 11, and the adjustment plate 4 rises to the initial position. Under the action of the torsion spring 10, the locking hook 7 is reset to open the hook opening; the hook is removed from the suspended object to complete the unloading.
[0028] The difference between the second embodiment and the first embodiment is that the mounting block 1 is detachably connected with a reinforcing plate 15, and the reinforcing plate 15 is attached to the lower surface of the hook body 3; Figure 4 shown.
[0029] The above is only an embodiment of the present invention, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the present invention, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. A crane hook, comprising a hook body, a straight handle and a locking hook housing, wherein the straight handle and the hook body are integrally formed; characterized in that: A mounting block is fixedly connected to the straight handle, and a spring is fixedly connected to the mounting block. The free end of the spring is fixedly connected to an adjusting plate, and the adjusting plate is vertically slidably connected to the mounting block. The adjusting plate is located at the side of the hook body, and one end of the adjusting plate away from the spring is fixedly connected to an adjusting piece. In the initial state, the adjusting piece is located above the bottom inner part of the bent part of the hook body; the locking hook house is rotatably connected to the mounting block, and a torsion spring is provided at the connection between the locking hook house and the mounting block. One end of the locking hook house connected to the mounting block is fixedly connected to a fixing plate, and one end of the adjusting plate connected to the spring is fixedly connected to a pressing plate for pressing down the fixing plate, and a sliding groove for passing the pressing plate is provided in the mounting block, a notch for installing and deflecting the locking hook house, and an avoidance hole for deflecting the fixing plate, and the avoidance hole, the notch and the sliding groove are connected.
2. A crane hook according to claim 1, characterized in that: A blind hole is provided at the bottom of the mounting block, the spring is fixedly connected in the blind hole, the adjustment plate is vertically slidably connected in the blind hole, and the blind hole is communicated with the sliding groove.
3. A crane hook according to claim 2, characterized in that: The adjustment plate is "L" shaped, the top of the vertical section of the adjustment plate is fixedly connected to the spring, the upper surface of the horizontal section of the adjustment plate is fixedly connected to a connecting plate, and the other end of the connecting plate is fixedly connected to the adjustment sheet.
4. A crane hook according to claim 3, characterized in that: The hook body is provided with a groove near its opening, and the free end of the locking hook is provided with a protrusion used in conjunction with the hook.
5. A crane hook according to claim 4, characterized in that: The locking hook is fixedly connected to two opposite sides of the housing with rotating shafts, and the two rotating shafts are rotatably connected to the walls at both sides of the notch, and the torsion spring is arranged at the connection between the rotating shaft and the wall.
6. A crane hook according to claim 5, characterized in that: The mounting block is detachably connected with a reinforcing plate, which is attached to the lower surface of the hook body.