Lifting supporting hook device for automatically taking and placing heavy objects and working method of lifting supporting hook device
By designing a lifting hook device that automatically picks up and releases heavy objects, locking and unlocking of the pins is achieved by using mechanical structures such as locking springs and slide rods, the problem of existing hook devices relying on manual operation and safety hazards, and improving handling efficiency and Security, adapt to diverse environments.
Patent Information
- Application Number
- CN202411641794.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-01-07
AI Technical Summary
The existing lifting hook devices rely on manual operation, are inefficient and have safety risks, and the electric, hydraulic and intelligent hook devices are complex in operation and high in cost, making them difficult to promote.
A lifting hook device for automatically picking and releasing heavy objects is designed, using a pure mechanical structure, and the reciprocating movement of the pin and locking and unlocking of the hook through key components such as locking springs, slide rods and push rods, ensuring the lifting process. Stability and reliability.
It realizes automatic grabbing and releasing of heavy objects, improves the efficiency and accuracy of lifting operations, reduces labor intensity and safety risks, and provides a more reliable and efficient heavy objects handling solution, which can adapt to a diverse working environment.
Smart Images
Figure CN119263066A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of lifting machinery, in particular to a lifting hook device for automatically taking and placing heavy objects and a working method thereof. Background Art
[0002] In today's industrial production and warehousing logistics, handling and loading and unloading heavy objects play a vital role. In the past, these tasks were mainly completed by manpower, which was not only inefficient but also accompanied by significant safety risks. In view of this, the industry urgently needs to develop a lifting hook device that can automatically carry out heavy object pick-up and placement operations.
[0003] The lifting hook devices on the current market are mainly divided into four types: manual, electric, hydraulic and intelligent. The manual hook device relies on manpower to hang the heavy objects on the hook through wire ropes or slings. It has a simple structure and low cost, but the work efficiency is not high, the labor intensity is high, and there are great safety hazards. In contrast, electric, hydraulic and intelligent hook devices use advanced electrical, hydraulic and communication technologies, and have a high degree of automation. However, the operation and use of these devices are relatively complicated, the manufacturing cost is high, and they require the cooperation of other systems. They are only suitable for specific working environments, so they face many difficulties in promotion. In view of this, it is particularly necessary to develop a new type of automatic lifting hook device, which is designed to improve the efficiency and safety of handling operations, and can adapt to a variety of working environments and different types of heavy objects, and has significant practical application value. Summary of the invention
[0004] In order to solve the problems of the prior art, the present invention provides a lifting hook device for automatically picking up and placing heavy objects and a working method thereof, so as to solve the problems of strong dependence on manual operation, low efficiency and safety of the existing lifting equipment. The device can automatically grab and release heavy objects, improve the efficiency and accuracy of lifting operations, reduce labor intensity and safety risks, and provide a more reliable and efficient solution for heavy object handling in various industries.
[0005] The present invention provides a lifting hook device for automatically picking up and placing heavy objects, comprising an upper joint and a lower joint whose inner cavities are connected, and a latch inserted into the inner cavities of the upper joint and the lower joint; a step is provided in the inner cavity of the upper joint, a locking spring is provided at the center of the inner cavity, one end of the locking spring is clamped on the step through an upper spring seat, and the other end is provided with a lower spring seat; an outer sliding rod is provided on the inner wall of the upper joint, a threaded slideway is provided on the inner wall of the outer sliding rod, an inner sliding rod connected to the lower spring seat is provided on the outer edge of the locking spring, the inner sliding rod is clamped in the slideway of the outer sliding rod, and the latch sequentially squeezes the lower spring seat through the top rod assembly and the shaft with a retaining ring, so that the locking spring is compressed and the inner sliding rod The rod slides along the outer slide bar slide; a plurality of push rods are arranged on the inner wall of the lower joint, the inner wall of one end of the push rod is a conical surface, a plurality of steel balls are arranged between the conical surface of the push rod and the outer edge of the pin, the other end of the push rod is connected to the push ring inside the push rod assembly, a return spring is arranged between the push ring and the lower joint, and the return spring is sleeved on the push rod; two groove types with different depths are arranged on the outer slide bar slide, when the inner slide bar is in the deep groove, the shaft retaining ring is close to one side of the pin, the shaft retaining ring pushes the push rod, and the conical surface of the push rod pushes the steel ball to lock the pin; when the inner slide bar is in the shallow groove, the return spring pushes the shaft retaining ring and the push rod away from one side of the pin, the steel ball returns to a free state, and the pin is unlocked.
[0006] As a further improvement, when the inner slide bar spirally slides along the outer slide bar slideway, the maximum rotation angle is 15°.
[0007] As a further improvement, the outer sliding rod is distributed in four groups along the circumference of the inner wall of the upper joint, and each group includes 2 deep grooves and 1 shallow groove.
[0008] As a further improvement, the deep groove has a depth of 19 mm and the shallow groove has a depth of 10.5 mm.
[0009] As a further improvement, the slope of the conical surface of the push rod is 12°.
[0010] As a further improvement, guide cones are provided between the pins of the lower joint box.
[0011] As a further improvement, a retaining ring groove is provided on the inner wall of the upper joint, a retaining ring is provided in the retaining ring groove, and one end of the outer sliding rod is clamped on the retaining ring.
[0012] The present invention also provides a working method of a lifting hook device for automatically picking up and placing heavy objects, including a locking action and an unlocking action; When locking, push the latch, the push rod assembly compresses the locking spring under the thrust of the latch, the inner slide bar rotates along the outer slide bar slideway, the locking spring releases the torque, and when the latch retracts, the inner slide bar rotates again along the outer slide bar slideway under the action of the locking spring force, and finally stops in the deep groove of the outer slide bar. The shaft retaining ring is close to one side of the latch, and the push rod fixed on the retaining ring pushes the steel ball to lock the latch; When locking, push the bolt again. When the bolt retracts, the inner slide bar is located in the shallow groove of the outer slide bar. The return spring pushes the shaft retaining ring and the push rod away from the bolt, the steel ball returns to a free state, and the bolt is unlocked.
[0013] The beneficial effects of the present invention are as follows: With the precise mechanical structure design, the key components such as the slide bar and the locking spring are cleverly integrated to achieve the precise conversion between the reciprocating motion of the latch and the locking and unlocking states of the hook. In the unlocking mode, the latch is separated from the hook, which is convenient for loading and unloading operations; while in the locking mode, the latch is firmly locked inside the hook, ensuring the stability and reliability of the lifting process. The lock structure has been strictly tested and can withstand a tensile force of up to 5kN. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is an internal cross-sectional view of the present invention; Figure 2 This is an enlarged schematic diagram of the connection between the push rod and the steel ball.
[0016] In the figure, 1: upper joint; 2: outer slide rod; 3: inner slide rod; 4: lower joint; 5: retaining ring; 6: push rod; 7: upper spring seat; 8: locking spring; 9: lower spring seat; 10: steel ball; 11: return spring; 12: latch; 13 push rod assembly; 14: retaining ring for shaft; 15: guide cone. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0018] A specific embodiment of the present invention is structured as follows Figure 1 and Figure 2As shown, it includes an upper joint 1 and a lower joint 4 whose inner cavities are connected, and a pin 12 inserted into the inner cavities of the upper joint and the lower joint; a step is provided in the inner cavity of the upper joint 1, and a locking spring 8 is provided at the center of the inner cavity. One end of the locking spring is clamped on the step through an upper spring seat 7, and the other end is provided with a lower spring seat 9; an outer slide bar 2 is provided on the inner wall of the upper joint 1, and a threaded slideway is provided on the inner wall of the outer slide bar 2. An inner slide bar 3 connected to the lower spring seat 9 is provided on the outer edge of the locking spring 8, and the inner slide bar 3 is clamped in the slideway of the outer slide bar 2. The pin 12 squeezes the lower spring seat 9 through the top rod assembly 13 and the shaft retaining ring 14 in turn, so that the locking spring is compressed and the inner slide bar moves along the outer The slide rail slides; a plurality of push rods 6 are arranged on the inner wall of the lower joint, and the inner wall at one end of the push rod 6 is a conical surface, and a plurality of steel balls 10 are arranged between the conical surface of the push rod and the outer edge of the latch 12, and the other end of the push rod is connected to the push ring inside the push rod assembly, and a return spring 11 is arranged between the push ring and the lower joint, and the return spring is sleeved on the push rod; two groove types with different depths are arranged on the outer slide rail, and when the inner slide rod is in the deep groove, the shaft retaining ring is close to one side of the latch, the shaft retaining ring pushes the push rod, and the conical surface of the push rod pushes the steel ball to lock the latch; when the inner slide rod is in the shallow groove, the return spring pushes the shaft retaining ring and the push rod away from one side of the latch, the steel ball returns to a free state, and the latch is unlocked.
[0019] The present invention designs an installation structure of a push ring and a push rod, wherein the push ring is installed inside the push rod assembly, and the push rod is installed on the push ring. The push ring has a certain degree of freedom inside the push rod assembly to move along the reciprocating direction of the latch. At the same time, it is ensured that when the inner slide bar and the outer slide bar are in grooves of different depths, the locking spring and the return spring can adjust the position of the push ring in the push rod assembly. The mechanism is equipped with a total of four push rods, which are fixed to the push ring by a retaining spring and are arranged at a symmetrical angle of 90 degrees. The push rod is cut into a specific slope so as to convert the reciprocating motion into a lateral thrust to push the locking steel ball.
[0020] This invention is dedicated to providing a lifting hook device for automatically picking up and placing heavy objects and its working method. The device adopts a purely mechanical structure, is suspended under the lifting hook through a counterweight rod, and a customized latch is installed on one side of the heavy object or the hanging basket. After the device is lowered to the latch position, under the action of the counterweight, the latch pushes the device mechanism to lock or unlock the latch, thereby completing the connection and separation of the heavy object and the hook. The inner wall of the upper joint is provided with a retaining ring groove, and a retaining ring 5 is provided in the retaining ring groove, and one end of the outer slide rod is stuck on the retaining ring.
[0021] In order to facilitate the quick and accurate alignment of the hook and the pin, a 110° guide cone 15 is specially designed under the automatic hook. The guide cone 15 allows the pin to be easily inserted into the automatic hook at an angle not exceeding 50 degrees, thereby significantly improving work efficiency and operating accuracy.
[0022] The core technology of the present invention is to convert the reciprocating motion of the bolt into the action of the locking and unlocking mechanism. The mechanism uses the sliding rod principle, such as Figure 1 and Figure 2 As shown, the push rod assembly 13 compresses the locking spring 8 under the thrust of the latch 12, and at the same time rotates the inner slide bar 3 by 15 degrees. When the latch 12 retracts, the inner slide bar 3 rotates 15 degrees again along the slideway of the outer slide bar 2 under the force of the locking spring, and the locking spring releases the torque, and the inner slide bar finally stops in the groove designed for the outer slide bar. There are two grooves of different depths on the outer slide bar. When the inner slide bar 3 is in the deep groove, the shaft retaining ring 14 is close to the side of the latch 12, and the push rod 6 pushes the steel ball 10 to lock the latch 12; when the inner slide bar 3 is in the shallow groove, the reset spring 11 pushes the shaft retaining ring 14 and the push rod assembly 13 away from the latch, the steel ball returns to a free state, the latch is unlocked, and the device is separated from the heavy object.
[0023] From the above action principle, it can be seen that the outer slide bar 2 and the push rod 6 are the key components for the device to realize its functions, and their structure and size design are crucial. Each group of outer slide bars designed in this patent contains 2 deep grooves and 1 shallow groove, with a total of 4 groups. This design can effectively prevent the heavy object hook from falling due to misoperation. The deep groove is 19mm deep and the shallow groove is 10.5mm deep, which matches the 12-degree slope of the push rod.
[0024] In addition, the slide bar rotates along the slope under the action of longitudinal force, so its material and slope size are also crucial. The slide bar is made of reinforced POM material, and the slope is designed to be 55 degrees; in order to improve the hardness and wear resistance of the latch and push rod, the latch and push rod are made of 35CrNiMoA steel and are treated with QPQ salt bath.
[0025] The present invention also provides a working method of a lifting hook device for automatically picking up and placing heavy objects, including a locking action and an unlocking action; When locking, push the latch, the push rod assembly compresses the locking spring under the thrust of the latch, the inner slide bar rotates along the outer slide bar slideway, the locking spring releases the torque, and when the latch retracts, the inner slide bar rotates again along the outer slide bar slideway under the action of the locking spring force, and finally stops in the deep groove of the outer slide bar. The shaft retaining ring is close to one side of the latch, and the push rod fixed on the retaining ring pushes the steel ball to lock the latch; When locking, push the bolt again. When the bolt retracts, the inner slide bar is located in the shallow groove of the outer slide bar. The return spring pushes the shaft retaining ring and the push rod away from the bolt, the steel ball returns to a free state, and the bolt is unlocked.
[0026] The design, assembly and testing process of the present invention is as follows: Model the device and obtain the processing drawings of the device parts accordingly. During the modeling process, special attention should be paid to the reciprocating stroke of the bolt, which should be about 15 mm; in the unlocked state, the steel ball should be able to move flexibly, and the size of the steel ball channel should not be less than 20.9 mm; in the locked state, the steel ball is pushed out, and the size of its frontmost channel should be between 17.5 mm and 17.2 mm.
[0027] Process the parts according to the parts processing drawings drawn by the model to ensure that the surface finish of the parts reaches level 6 or above.
[0028] In terms of parts assembly, the push ring is first installed inside the push rod, and then the cover plate of the push rod is closed by electric welding and polished. Then, the four push rods are installed on the push ring.
[0029] For the assembly of the slide mechanism, first install the upper spring seat inside the upper joint, then put in the locking spring, lower spring seat, inner slide and outer slide in sequence. When installing the outer slide, make sure it is aligned with the guide groove of the upper joint. Then, press the spring with one hand and snap the retaining ring into the retaining ring groove of the upper joint with the other hand.
[0030] The overall assembly steps are as follows: first, place the push rod assembly into the slide rod device, then put the return spring on the four push rods, then put the steel ball into the lower joint, and finally align the lower joint with the four push rods and press it onto the upper joint, and use four bolts to fix the upper and lower joints.
[0031] In the test phase, first adjust the assembled hook device to the unlocked state, then insert the pin about 20 mm from the lower joint end. When a click is heard, the pin is locked and cannot be pulled out from the device. Insert the pin 15 mm again. If a click is heard, the pin is still in the locked state. Finally, insert the pin 15 mm for the third time. If a click is heard, the device is unlocked and the pin can be pulled out freely. Completing the above steps is considered an experimental cycle. Perform 10 consecutive experiments. If the device operates normally, a tensile test is performed. The requirements of the tensile test are: when the device is in the locked state, apply a force of 5KN to the pin for a duration of not less than 60 seconds. If the pin does not disengage, the device is considered normal.
[0032] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, the above is only a preferred embodiment of the present invention. Since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment. The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field is within the technical scope disclosed by the present invention. For ordinary technicians in the technical field, changes or replacements that can be easily thought of should be covered within the protection scope of the present invention without departing from the principle of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.
Claims
1. A lifting hook device for automatically picking up and placing heavy objects, characterized in that: It comprises an upper joint and a lower joint connected with each other in the inner cavity, and a latch inserted into the inner cavity of the upper joint and the lower joint; a step is arranged in the inner cavity of the upper joint, a locking spring is arranged in the center of the inner cavity, one end of the locking spring is clamped on the step through an upper spring seat, and the other end is arranged on a lower spring seat; an outer slide rod is arranged on the inner wall of the upper joint, a threaded slideway is arranged on the inner wall of the outer slide rod, an inner slide rod connected to the lower spring seat is arranged on the outer edge of the locking spring, the inner slide rod is clamped in the slideway of the outer slide rod, and the latch rod sequentially passes through the push rod assembly and the shaft with a retaining ring to squeeze the lower spring seat, so that the locking spring is compressed and the inner slide rod slides along the slideway of the outer slide rod; A plurality of push rods are arranged on the inner wall of the lower joint, and the inner wall of one end of the push rod is a conical surface, and a plurality of steel balls are arranged between the conical surface of the push rod and the outer edge of the pin, and the other end of the push rod is connected to the push ring inside the push rod assembly, and a return spring is arranged between the push ring and the lower joint, and the return spring is sleeved on the push rod; two groove types with different depths are arranged on the outer slide rail, and when the inner slide rod is located in the deep groove, the shaft retaining ring is close to one side of the pin, the shaft retaining ring pushes the push rod, and the conical surface of the push rod pushes the steel ball to lock the pin; when the inner slide rod is located in the shallow groove, the return spring pushes the shaft retaining ring and the push rod away from one side of the pin, the steel ball returns to a free state, and the pin is unlocked.
2. The lifting hook device for automatically picking up and placing heavy objects according to claim 1, characterized in that: When the inner slide bar spirally slides along the outer slide bar slideway, the maximum rotation angle is 15°.
3. The lifting hook device for automatically picking up and placing heavy objects according to claim 1, characterized in that: The outer sliding rod is distributed in four groups along the circumference of the inner wall of the upper joint, and each group includes two deep grooves and one shallow groove.
4. The lifting hook device for automatically picking up and placing heavy objects according to claim 3 is characterized in that: The depth of the deep groove is 19 mm, and the depth of the shallow groove is 10.5 mm.
5. The lifting hook device for automatically picking up and placing heavy objects according to claim 1, characterized in that: The slope of the push rod conical surface is 12°.
6. The lifting hook device for automatically picking up and placing heavy objects according to claim 1, characterized in that: A guide cone is arranged between the pins of the lower joint box.
7. The lifting hook device for automatically picking up and placing heavy objects according to claim 1, characterized in that: The inner wall of the upper joint is provided with a retaining ring groove, a retaining ring is provided in the retaining ring groove, and one end of the outer sliding rod is clamped on the retaining ring.
8. A method for operating the lifting hook device for automatically picking up and placing heavy objects according to any one of claims 1 to 7, characterized in that: Including locking action and unlocking action; When locking, push the latch, the push rod assembly compresses the locking spring under the thrust of the latch, the inner slide bar rotates along the outer slide bar slideway, the locking spring releases the torque, and when the latch retracts, the inner slide bar rotates again along the outer slide bar slideway under the action of the locking spring force, and finally stops in the deep groove of the outer slide bar. The shaft retaining ring is close to one side of the latch, and the push rod fixed on the retaining ring pushes the steel ball to lock the latch; When locking, push the bolt again. When the bolt retracts, the inner slide bar is located in the shallow groove of the outer slide bar. The return spring pushes the shaft retaining ring and the push rod away from the bolt, the steel ball returns to a free state, and the bolt is unlocked.