Lifting hook capable of effectively preventing rigging from falling off
By setting a combination of swing rod, blocking rod and hydraulic damping device on the hook, the problem of loosening and failure of the hook anti-disengagement structure is solved, realizing the automatic closing and opening of the rigging, ensuring the safety of lifting and reducing the workload of maintenance.
Patent Information
- Application Number
- CN202422648938.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-10-31
AI Technical Summary
The anti-unhooking structure of the existing hook is easy to loosen, fail, and deform, causing the rigging to fall out, posing a safety hazard and requiring a lot of maintenance work.
The combined structure of the swing rod, the blocking rod and the hydraulic damping device is adopted. The hydraulic damping device drives the swing rod to move forward and backward to realize the automatic closing and opening of the rigging and prevent the rigging from falling out.
It effectively prevents rigging from falling off, reduces maintenance workload, and improves the safety and reliability of lifting work.
Smart Images
Figure CN223468093U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of can prevent sling from being taken out in the hoisting of material hook, belong to hoist equipment technical field. BACKGROUND
[0002] Hook is the most common hoist in hoisting machinery, can make the weight hung on hook vertically lift or horizontally move in space, widely used in production workshop, freight yard and other places.Crane is in work, hoisted goods are hung into hook by sling, and hoist realizes the transfer of goods with hook.In the process of starting, braking and other processes, the weight on hook is easy to shake, in addition, too fast drop of crane hook due to improper operation, equipment failure and other reasons can easily make sling in hook taken out, which may cause damage to the hoisted weight, and even cause personal injury accidents, with great safety hazards.
[0003] At present, in order to avoid sling from being taken out of the hook of crane, a anti-taking-off plate is generally installed at the root of hook to prevent the hook from being taken off.However, the operator needs to pull the anti-taking-off plate when sling is installed, and the anti-taking-off plate needs to be pulled again to form a closed state with hook after sling is installed, so as to prevent the hook from being taken off, which not only makes the operation process complicated, but also has safety hazards due to frequent operation of personnel under sling.In addition, some anti-taking-off plates are assembled on hook by bolts, and the bolts are easy to loosen when the hook is impacted or vibrated, which may cause the bolts to fall off and separate the anti-taking-off device from the hook.
[0004] In order to reduce manual operation, a reset spring is installed in the anti-taking-off plate at present, which makes the anti-taking-off plate and the inner side of hook form a normally closed state, and the anti-taking-off plate can be opened by the weight of sling when the sling is installed, and then the front end of anti-taking-off plate is tightly closed to the inner wall of tail end of hook under the action of spring tension to form a relatively closed cavity, so as to prevent the sling from being taken out of the hook, which avoids the complicated work of manually opening and closing the anti-taking-off plate when the sling is installed, and provides safety in use.However, due to insufficient hardness and strength of material, frequent operation and other reasons, and due to the special shape of equipment when the crane is hoisting, the center of gravity is often not in the center of the object, which often causes spring failure, deformation of anti-taking-off plate and other situations, so that the anti-taking-off plate cannot be tightly closed to the inner wall of hook to lose the anti-taking-off performance, which requires frequent replacement and correction maintenance, thereby increasing the maintenance workload and burying safety hazards.Therefore, it is necessary to further improve the anti-taking-off structure of existing hook. SUMMARY
[0005] The technical problem to be solved by the utility model is to provide a hook capable of effectively preventing the disengagement of a sling, which can avoid the loosening, failure and deformation of the anti-disengagement hook structure, prevent the anti-disengagement function of the hook from being lost due to the above-mentioned faults, reduce the maintenance workload and time, and ensure the normal lifting work of the hook.
[0006] The technical solution for solving the above technical problem is:
[0007] A hook capable of effectively preventing the disengagement of a sling, which comprises a hook body, a swing rod, connecting bolts, a blocking rod and a hydraulic damping device, the swing rod is composed of two parallel L-shaped rods, the long rod ends of the L-shaped rods are connected by a cross rod, the bent portions of the two L-shaped rods are connected to the upper portion of the hook body by the connecting bolts, the two L-shaped rods are located on the two sides of the hook body, the short rod ends of the two L-shaped rods are connected to the two ends of the blocking rod, the blocking rod is located on the inner side of the lower hook of the hook body, the short rod middle portion of one L-shaped rod of the swing rod is connected to the front end of the hydraulic damping device, and the rear end of the hydraulic damping device is fixed to the outer side of the upper portion of the hook body by a bolt.
[0008] The hook capable of effectively preventing the disengagement of a sling has the following beneficial effects: the bent portions of the two L-shaped rods of the swing rod are respectively provided with through holes, swing rod fixing plates are vertically welded on the two sides of the upper portion of the hook body, the center of each swing rod fixing plate is provided with a connecting hole, two connecting bolts pass through the through holes of the bent portions of the two L-shaped rods and the connecting holes of the swing rod fixing plates, the rod bodies of the connecting bolts are provided with pin holes, and positioning pins pass through the pin holes to lock the connecting bolts and the inner sides of the swing rod fixing plates.
[0009] The hook capable of effectively preventing the disengagement of a sling has the following beneficial effects: the short rod ends of the two L-shaped rods of the swing rod are respectively provided with blocking rod connecting holes, the two ends of the blocking rod are respectively provided with threads, the two ends of the blocking rod pass through the blocking rod connecting holes at the short rod ends of the two L-shaped rods of the swing rod, and fixed nuts are tightly connected to the threads at the two ends of the blocking rod.
[0010] The hook capable of effectively preventing the disengagement of a sling has the following beneficial effects: an anti-disengagement hook sliding block is connected to the blocking rod, the anti-disengagement hook sliding block is a smooth cylindrical body, the center of the cylindrical body is provided with a blocking rod hole along the length direction, the blocking rod passes through the blocking rod hole and is connected to the swing rod, and the blocking rod is fastened by a fixed nut 11.
[0011] The utility model has the following beneficial effects:
[0012] The utility model discloses a swing rod upper end and the hook body are connected by the connecting bolt rotation, and the swing rod can swing in the front and back in the hook body, and the blocking rod is connected in the lower end of swing rod, and the blocking rod can prevent the rigging from getting out of the hook in the hook body, and the hydraulic damping device front end is connected with swing rod, and the hydraulic damping device can drive swing rod to move in the front and back, lets rigging go in and out and stays in the hook body.
[0013] The utility model discloses simple structure, convenient to use can avoid the anti -unhook structure of hook loose, failure, deformation etc. DRAWINGS
[0014] Figure 1 It is the structure schematic diagram of the utility model;
[0015] Figure 2 It is the structure schematic diagram of the hook body;
[0016] Figure 3 It is the structure schematic diagram of swing rod;
[0017] Figure 4 It is the structure schematic diagram of connecting bolt and positioning pin;
[0018] Figure 5 It is the structure schematic diagram of blocking rod;
[0019] Figure 6 It is the structure schematic diagram of anti -unhook sliding block;
[0020] Figure 7 It is the structure schematic diagram of hydraulic damping device.
[0021] Marked in the drawing as follows: hook body 1, swing rod 2, blocking rod 3, hydraulic damping device 4, through -hole 5, swing rod fixed piece 6, connecting hole 7, connecting bolt 8, positioning pin 9, blocking rod connecting hole 10, fixed nut 11, anti -unhook sliding block 12, front connecting rod 13, front sleeve 14, rear sleeve 15, hydraulic cylinder 16, piston rod 17, piston 18, oil storage cylinder 19, rear connecting rod 20. DETAILED DESCRIPTION
[0022] The utility model discloses by hook body 1, swing rod 2, blocking rod 3, hydraulic damping device 4, swing rod fixed piece 6, connecting bolt 8, positioning pin 9, fixed nut 11, anti -unhook sliding block 12 composition.
[0023] Show in the drawing, the both sides of hook body 1 upper part are respectively perpendicular and weld swing rod fixed piece 6, and the center of swing rod fixed piece 6 has connecting hole 7, is used for connecting installation swing rod 2.
[0024] Figure 1 、 3 , 4 shows that the swing rod 2 is composed of two parallel L-shaped rods, the long rod ends of the L-shaped rods of the swing rod 2 are welded and connected by a cross rod, and the two L-shaped rods of the swing rod 2 are located on the two sides of the hook body 1. The bending portions of the two L-shaped rods of the swing rod 2 are respectively provided with through holes 5, two connecting bolts 7 respectively pass through the through holes 5 of the bending portions of the swing rod 2 and the connecting holes 7 of the swing rod fixing plate 6, the shanks of the connecting bolts 7 are provided with pin holes, a positioning pin 8 passes through the pin holes to lock the connecting bolts 7 and the inner side of the swing rod fixing plate 6, and the swing rod 2 can swing forward and backward around the connecting bolts 7.
[0025] Figure 1 、 5 shows that the lower ends of the short rods of the two L-shaped rods of the swing rod 2 are respectively connected to the two ends of the blocking rod 3. The lower ends of the short rods of the two L-shaped rods of the swing rod 2 are respectively provided with blocking rod connecting holes 10, the two ends of the blocking rod 3 are respectively provided with threads, the two ends of the blocking rod 3 respectively pass through the blocking rod connecting holes 10 of the lower ends of the short rods of the two L-shaped rods of the swing rod 2, and the fixed nuts 11 are tightly connected with the threads of the two ends of the blocking rod 3. The blocking rod 3 fixed at the lower end of the swing rod 2 is located at the inner side of the lower hook of the hook body 1, and is used to constrain the swing rod 2 in the hook body 1.
[0026] Figure 1 、 6 shows that the blocking rod 3 is connected with the anti-unhooking sliding block 12, the anti-unhooking sliding block 12 is a smooth cylindrical body, the center of the cylindrical body is provided with a blocking rod hole in the length direction, the blocking rod 3 passes through the blocking rod hole and is connected with the swing rod 2, is fastened by the fixed nut 11, is prevented from loosening, and a gasket is added.
[0027] Figure 1 shows that the middle portion of the short rod of one L-shaped rod of the swing rod 2 is connected with the front end of the hydraulic damping device 4, and the rear end of the hydraulic damping device 4 is fixed on the outer side of the upper portion of the hook body 1 by a bolt. The hydraulic damping device 4 can drive the swing rod 2 to move forward and backward, so that the rigging enters and exits and stays in the hook body 1.
[0028] Figure 7The hydraulic damping device 4 is composed of the front connecting rod 13, the front sleeve 14, the rear sleeve 15, the hydraulic cylinder 16, the piston rod 17, the piston 18, the oil storage cylinder 19 and the rear connecting rod 20. The front sleeve 14 and the rear sleeve 15 are both cylindrical bodies with one end closed, the open end of the rear sleeve 15 is inserted into the open end of the front sleeve 14, the tube walls of the front sleeve 14 and the rear sleeve 15 are in sliding fit, the hydraulic cylinder 16 is installed in the rear sleeve 15, the rear end of the hydraulic cylinder 16 is connected with the inner wall of the rear end of the rear sleeve 15, the end face inner wall of the front sleeve 14 is fixed with the piston rod 17 and the piston 18, the front end of the piston rod 17 and the piston 18 extends into the hydraulic cylinder 16 from the front end of the hydraulic cylinder 16, the oil storage cylinder 19 is arranged between the outer wall of the rear sleeve 15 and the outer wall of the hydraulic cylinder 16, the oil storage cylinder 19 is communicated with the hydraulic cylinder 16 through an oil hole, the front connecting rod 13 and the rear connecting rod 20 are vertically and fixedly connected with the two end faces of the front sleeve 14 and the rear sleeve 15 respectively, and the front connecting rod 13 and the rear connecting rod 20 are connected with the swing rod 2 and the hook body 1 respectively.
[0029] The use process of the utility model is as follows:
[0030] The operator remotely controls the crane to move to the material storage place, lifts the hook body 1 of the crane to the specified position, starts the hydraulic damping device 4, the hydraulic damping device 4 shrinks the hydraulic spring, the swing rod 2 swings to the inner side of the hook body 1 under the action of the hydraulic damping device 4, the hook opening of the hook body 1 is opened, the steel wire rope for binding the material is hung on the hook body 1, then the hydraulic damping device 4 is depressurized by pressing the knob, the hydraulic spring resets, the swing rod 2 swings forward, the blocking rod 3 moves to the inner side of the front end of the hook body 1, the blocking rod 3 closes the opening of the hook body 1, the steel wire rope for hanging the object cannot be taken out of the hook, and the purpose of preventing the unhooking of the rigging is achieved.
[0031] If the hydraulic damping device 4 fails, the operator can push the cross rod at the rear end of the long rod of the L-shaped rod of the swing rod 2 to make the swing rod 2 swing, complete the closing and opening operation of the blocking rod 3 to the opening of the hook body 1, and check the anti-unhooking device and replace the parts after the material hoisting operation is completed, so that the hoisting of the material and the smooth production are ensured.
[0032] An embodiment of the utility model is as follows:
[0033] The diameter of the swing rod 2 is 10mm, the length of the short rod of the L-shaped rod is 80mm, and the length of the long rod is 180mm;
[0034] The diameter of the blocking rod 3 is 15mm, and the length is 80mm;
[0035] The model of the hydraulic damping device 4 is ZDF-ADA517M;
[0036] The length of the anti-unhooking slider 12 is 60 mm and the thickness is 18 mm.
Claims
1. A hook capable of effectively preventing the disengagement of a sling, comprising a hook body (1), characterized in that: It also has a swing rod (2), connecting bolt (8), blocking rod (3), hydraulic damping device (4), the swing rod (2) is composed of two parallel L-shaped rods, the long rod end of the L-shaped rod of the swing rod (2) is welded and connected by a cross rod, the bending part of the two L-shaped rods of the swing rod (2) is connected with the upper part of the hook body (1) through the connecting bolt (8), the two L-shaped rods of the swing rod (2) are located on the two sides of the hook body (1) respectively, the lower end of the short rod of the two L-shaped rods of the swing rod (2) is connected to the two ends of the blocking rod (3) respectively, the blocking rod (3) is located in the lower hook of the hook body (1) inner side, the middle part of the short rod of one L-shaped rod of the swing rod (2) is connected with the front end of the hydraulic damping device (4), the rear end of the hydraulic damping device (4) is fixed on the upper outer side of the hook body (1) through the bolt.
2. The hook capable of effectively preventing the slippage of rigging according to claim 1, characterized in that: The bending part of the two L-shaped rods of the swing rod (2) has a through hole (5) respectively, the two sides of the upper part of the hook body (1) are vertically welded with the swing rod fixing piece (6) respectively, the center of the swing rod fixing piece (6) has a connecting hole (7), two connecting bolts (8) pass through the through hole (5) of the bending part of the swing rod (2) and the connecting hole (7) of the swing rod fixing piece (6) respectively, the rod body of the connecting bolt (8) has a pin hole, the positioning pin (9) passes through the pin hole to lock the connecting bolt (8) and the inner side of the swing rod fixing piece (6).
3. The hook capable of effectively preventing the slippage of rigging according to claim 1, characterized in that: The lower end of the short rod of the two L-shaped rods of the swing rod (2) has a blocking rod connecting hole (10) respectively, the two ends of the blocking rod (3) have threads respectively, the two ends of the blocking rod (3) pass through the blocking rod connecting hole (10) of the lower end of the short rod of the two L-shaped rods of the swing rod (2) respectively, the fixed nut (11) is screwed and connected with the threads of the two ends of the blocking rod (3).
4. The hook capable of effectively preventing the slippage of rigging according to claim 1, characterized in that: The blocking rod (3) is connected with the anti-unhooking sliding block (12), the anti-unhooking sliding block (12) is a smooth cylindrical body, the center of the cylindrical body has a blocking rod hole along the length direction, the blocking rod (3) is connected with the swing rod (2) after penetrating through the blocking rod hole, and is fastened with the fixed nut (11).