Locking device for lifting concrete columns

Abstract

The utility model provides a kind of lock for hoisting concrete column, belong to hoisting appliance technical field, including axle pin, the axle pin is arranged in the hole inside reserved in concrete column upper portion, and the axle pin is arranged on the both sides of concrete column hook, the baffle is welded on the outer circumferential surface upper portion of axle pin one end, and the axle pin between baffle and hook is also equipped with clamping plate;First through-hole and second through-hole are arranged in the middle of clamping plate, first through-hole is located above second through-hole, and first through-hole is communicated with second through-hole, the width of first through-hole is compatible with axle pin, the width of the width of first through-hole and second through-hole junction is less than the diameter of axle pin.The utility model can realize the quick unhooking when hoisting concrete, improves the hoisting efficiency of concrete column.

Description

Technical Field

[0001] This utility model belongs to the technical field of hoisting equipment, and in particular relates to a lock for hoisting concrete columns. Background Technology

[0002] Precast concrete columns are columns made by pouring concrete. Before pouring, some steel bars are used as inner lining for support. Precast reinforced concrete frame structures play a crucial role in prefabricated buildings.

[0003] Precast concrete columns are often used in large public buildings. When assembling precast concrete columns, they are hoisted to connect the precast concrete columns to the precast base using steel sleeves, angle steel and bolts, and finally the connection is poured again.

[0004] Most existing concrete column hoisting methods use traditional methods, which involve fixing lifting rings at the concrete column hoisting point and using hooks on the lifting equipment to hoist the concrete column. This method requires repeated hook removal when hoisting concrete columns, and since the concrete columns are relatively high, scaffolding or a lifting vehicle is needed to remove the hooks, and people need to reach the high point to remove the hooks, which seriously affects the hoisting efficiency. Utility Model Content

[0005] To address the deficiencies or shortcomings in existing technologies, this utility model provides a locking device for hoisting concrete columns, which enables ground-based operation without the need for scaffolding or lifting vehicles. It allows for quick unhooking of the hook during concrete hoisting, thereby improving the efficiency of concrete column hoisting.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An embodiment of this utility model provides a locking device for hoisting concrete columns, including a pin, which is inserted into a pre-reserved hole in the upper part of the concrete column. Hooks are inserted on the pins on both sides of the concrete column. A baffle is welded to the upper part of the outer circular surface of one end of the pin, and a locking plate is also sleeved on the pin between the baffle and the hook. The card plate has a first through hole and a second through hole in the middle. The first through hole is located above the second through hole and the first through hole is connected to the second through hole. The width of the first through hole is adapted to the shaft pin, and the width at the junction of the first through hole and the second through hole is smaller than the diameter of the shaft pin.

[0007] Furthermore, the first through hole is U-shaped, the second through hole is semi-circular, and the diameter of the second through hole is greater than the width of the first through hole.

[0008] Furthermore, a reinforcing plate is provided at the lower part of the card plate.

[0009] Furthermore, the longitudinal section of the baffle is arc-shaped, which is adapted to the outer circular surface of the shaft pin. The baffle is welded and fixed to the upper part of the outer circular surface of the shaft pin, and the baffle is at a set distance from the end face of the shaft pin.

[0010] Furthermore, the hook is annular, with its inner diameter being larger than the outer diameter of the pivot pin.

[0011] Furthermore, a balance beam is provided above the concrete column. The length of the balance beam is the same as the length of the axle pin, and the balance beam is set perpendicular to the axle pin. Two hooks are connected to the balance beam by steel wire ropes, and the two ends of the balance beam are connected to the lifting device by steel wire ropes.

[0012] Furthermore, a retaining ring is fitted on the outer circumference of the end of the shaft pin away from the baffle, and the retaining ring is symmetrically arranged with the retaining plate.

[0013] Furthermore, the retaining ring has a circular structure, the outer diameter of the baffle is larger than the inner diameter of the hook, and the hook is located between the retaining ring and the concrete column.

[0014] Furthermore, the top of the card plate is connected to a lifting lug lock via a lifting lug, and the lifting lug lock is connected to a guide rope.

[0015] Furthermore, a lifting ring is fixedly connected to the end face of the pin near the retaining ring, and the guide rope is also connected in sequence to the hook on one side of the card plate, the lifting ring, and the hook on the side of the retaining ring.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model sets a baffle at one end of the shaft pin and fits a clamping plate on the shaft pin inside the baffle. The baffle restricts the displacement of the clamping plate, thus ensuring that the concrete column is in a safe and stable state during hoisting. After hoisting, pulling the guide rope causes the clamping plate to rotate and move downward, allowing the baffle to enter the second through hole, thereby releasing the restriction of the clamping plate by the baffle. When the wire rope is pulled, the clamping plate and the hook can be easily disengaged. It is suitable for reusable locations, eliminates the need for scaffolding and high-altitude operations, is safe and reliable, and greatly improves construction efficiency.

[0017] 2. This utility model, by setting a reinforcing plate at the bottom of the pallet, places the center of gravity of the pallet at the bottom of the pallet. During hoisting, the axle pin is always in the first through hole of the pallet, thereby restricting the movement of the hook, ensuring the stability during hoisting, and greatly reducing safety risks.

[0018] 3. This utility model has a retaining ring and a lifting ring on the other side of the axle pin. The retaining ring restricts the outward movement of the hook, allowing the axle pin to be pulled out of the concrete column, ensuring hoisting safety. The lifting ring is connected to the guide rope, making the baffle, hook, and axle pin an integrated unit, eliminating the risk of falling objects from height and improving safety. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the lock structure in an embodiment of the present utility model; Figure 2 This is a diagram showing the connection state between the card plate and the shaft pin in an embodiment of this utility model; Figure 3 This is a diagram showing another connection state between the card plate and the shaft pin in an embodiment of this utility model; Figure 4 This is a diagram showing the connection state between the shaft pin and the hook in an embodiment of this utility model; Among them, 1. Balance beam; 2. Steel wire rope; 3. Guide rope; 4. Shaft pin; 5. Concrete column; 6. Hook; 7. Baffle; 8. Clamping plate; 9. Lifting lug lock; 10. Second through hole; 11. Reinforcing plate; 12. Retaining ring; 13. Lifting ring; 14. First through hole. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] A typical embodiment of this utility model is as follows: Figure 1 As shown, a locking device for hoisting a concrete column includes a pivot pin 4, which is a solid steel pipe. A hole is left in the upper part of the concrete column 5, and the pivot pin 4 is inserted into the hole, making the pivot pin 4 perpendicular to the concrete column 5. The length of the pivot pin 4 is greater than the width of the concrete column 5 to facilitate hoisting. During hoisting, hooks 6 are inserted through the pivot pins 4 on both sides of the concrete column 5. Figure 4 As shown, the hook 6 is circular, with an inner diameter larger than the outer diameter of the pin 4. A balance beam 1 is provided above the concrete column 5. The length of the balance beam 1 is the same as the length of the pin 4, and the balance beam 1 is set perpendicular to the pin 4. The two hooks 6 are connected to the balance beam 1 by steel wire ropes 2 respectively. The setting of the balance beam 1 can ensure the stability of the hoisting. The two ends of the balance beam 1 are connected to the lifting device by steel wire ropes 2, so that the concrete column 5 can be hoisted by the lifting device.

[0022] A retaining ring 12 is fitted on the outer circular surface of one end of the shaft pin 4. The retaining ring 12 is a circular structure with an outer diameter larger than the inner diameter of the hook 6. The hook 6 is located between the retaining ring 12 and the concrete column 5. During hoisting, the retaining ring 12 limits the hook 6 to prevent it from slipping out of the end of the shaft pin 4, thus ensuring the smooth hoisting.

[0023] A baffle 7 is provided at the end of the shaft pin 4 away from the retaining ring 12. The longitudinal section of the baffle 7 is arc-shaped and matches the outer circular surface of the shaft pin 4. The baffle 7 is welded and fixed to the upper part of the outer circular surface of the shaft pin 4, and the baffle 7 is at a set distance from the end face of the shaft pin 4. A retaining plate 8 is also sleeved on the shaft pin 4 between the baffle 7 and the hook 6. The retaining plate 8 is symmetrically arranged with the retaining ring 12, and the baffle 7 can restrict the movement of the retaining plate 8.

[0024] Specifically, such as Figure 2As shown, the clamping plate 8 has a first through hole 14 and a second through hole 10 in the middle. The first through hole 14 is located above the second through hole 10 and is connected to the second through hole 10. The first through hole 14 is U-shaped, and its width is adapted to the shaft pin 4, so that the clamping plate 8 can be fitted onto the outside of the shaft pin 4. The second through hole 10 is semi-circular, and its diameter is larger than the width of the first through hole 14. The width at the junction of the first through hole 14 and the second through hole 10 is smaller than the diameter of the shaft pin 4. After hoisting, the clamping plate 8 is rotated so that the second through hole 10 is above the first through hole 14. Under the action of gravity, the clamping plate 8 moves downward, as... Figure 3 As shown, since the width at the junction of the first through hole 14 and the second through hole 10 is less than the diameter of the shaft pin 4, the shaft pin 4 cannot enter the second through hole 10. At this time, the baffle 7 on the shaft pin 4 is located in the second through hole 10. The baffle 7 cannot restrict the movement of the clamping plate 8, so the clamping plate 8 can be removed from the shaft pin 4, and the restriction of the clamping plate 8 on the hook 6 can be released.

[0025] A reinforcing plate 11 is provided at the lower part of the clamping plate 8, so that the weight of the lower part of the clamping plate 8 is greater than the weight of the upper part of the clamping plate 8. Without the action of external force, the second through hole 10 is always located below the first through hole 14, so that the baffle 7 is used to limit the clamping plate 8 during the hoisting process.

[0026] The top of the clamping plate 8 is connected to the lifting lug lock 9 via a lifting lug. The lifting lug lock 9 is connected to the guide rope 3. The other end of the guide rope 3 extends to a place convenient for the operator to operate. When the lifting is completed and the hook 6 needs to be removed, the guide rope 3 is pulled, and the clamping plate 8 flips under the action of external force and moves downward under the action of gravity, so that the baffle 7 enters the second through hole 10. At this time, the baffle 7 cannot limit the clamping plate 8, so the clamping plate 8 can be removed and the hook 6 can be pulled out from the end of the shaft pin 4.

[0027] A lifting ring 13 is fixedly connected to the end face of the pin 4 near the retaining ring 12. After the guide rope 3 is connected to the lifting lug lock 9, it is also connected to the hook 6 on the side of the clamping plate 8, the lifting ring 13 and the hook 6 on the side of the retaining ring 12 in sequence. After the concrete column 5 is hoisted, the clamping plate 8 and the hook 6 are simultaneously disengaged from the pin 4 by pulling the guide rope 3 remotely. Finally, the pin 4 is pulled out of the concrete column 5 by the crane.

[0028] Meanwhile, the lifting ring 13 connects to the guide rope 3, making the clamping plate 8, hook 6, and axle pin 4 a single unit, eliminating the risk of objects falling from heights and improving safety.

[0029] Working principle First, install a hook at one end of the axle pin, inside the retaining ring. Then, insert the axle pin into the reserved hole in the concrete column, adjust the concrete column to the middle position of the axle pin, and ensure that the reserved lengths on both sides are the same. Install another hook, and then install a clamping plate inside the baffle on one side of the axle pin to restrict the clamping plate from moving outward.

[0030] Tie the guide rope to the lifting ring and hook respectively, then connect it to the hook on the other side. Next, connect the guide rope to the lifting lug lock, and finally leave the length of the guide rope to a place where the operator can operate.

[0031] After the concrete column is fixed, the hoisting is completed. By pulling the guide rope remotely, the clamping plate is rotated, and the axle pin cannot enter the second through hole of the clamping plate. At this time, the clamping plate is offset from the restriction of the baffle. When the wire rope is pulled, the clamping plate and the hook are successfully disengaged. Under the pull of the crane, the axle pin is pulled out from the other side of the concrete.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A locking device for hoisting concrete columns, characterized in that, Includes a shaft pin, which is inserted into a pre-reserved hole in the upper part of the concrete column. Hooks are inserted on the shaft pins on both sides of the concrete column. A baffle is welded to the upper part of the outer circular surface of one end of the shaft pin. A retaining plate is also fitted on the shaft pin between the baffle and the hook. The card plate has a first through hole and a second through hole in the middle. The first through hole is located above the second through hole and the first through hole is connected to the second through hole. The width of the first through hole is adapted to the shaft pin, and the width at the junction of the first through hole and the second through hole is smaller than the diameter of the shaft pin.

2. The locking device for hoisting concrete columns as described in claim 1, characterized in that, The first through hole is U-shaped, the second through hole is semi-circular, and the diameter of the second through hole is greater than the width of the first through hole.

3. The locking device for hoisting concrete columns as described in claim 1, characterized in that, A reinforcing plate is provided at the bottom of the card plate.

4. A locking device for hoisting concrete columns as described in claim 1, characterized in that, The longitudinal section of the baffle is arc-shaped and matches the outer circular surface of the shaft pin. The baffle is welded and fixed to the upper part of the outer circular surface of the shaft pin, and the baffle is at a set distance from the end face of the shaft pin.

5. A locking device for hoisting concrete columns as described in claim 1, characterized in that, The hook is ring-shaped, and its inner diameter is larger than the outer diameter of the pin.

6. A locking device for hoisting concrete columns as described in claim 1, characterized in that, A balance beam is provided above the concrete column. The length of the balance beam is the same as the length of the axle pin, and the balance beam is set perpendicular to the axle pin. Two hooks are connected to the balance beam by steel wire ropes, and the two ends of the balance beam are connected to the lifting device by steel wire ropes.

7. A locking device for hoisting concrete columns as described in claim 1, characterized in that, A retaining ring is fitted on the outer circumference of the end of the shaft pin away from the baffle, and the retaining ring is symmetrically arranged with the clamping plate.

8. A locking device for hoisting concrete columns as described in claim 7, characterized in that, The retaining ring is a circular structure, with the outer diameter of the baffle being larger than the inner diameter of the hook, and the hook being located between the retaining ring and the concrete column.

9. A locking device for hoisting concrete columns as described in claim 8, characterized in that, The top of the card plate is connected to a lifting lug lock via a lifting lug, and the lifting lug lock is connected to a guide rope.

10. A locking device for hoisting concrete columns as described in claim 9, characterized in that, A lifting ring is fixedly connected to the end face of the pin near the retaining ring, and the guide rope is also connected in sequence to the hook on one side of the card plate, the lifting ring, and the hook on the side of the retaining ring.

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