A lifting device for concrete columns

Abstract

The utility model provides a kind of lifting appliance for concrete column, belong to hoisting equipment technical field, including axle pin, the axle pin is inserted in the hole reserved in concrete column, the outer circle of the one end of axle pin is equipped with annular groove, the annular groove outside is equipped with clamping plate, first through -hole and second through -hole are equipped in the middle of clamping plate, first through -hole is communicated with second through -hole, wherein the diameter of first through -hole is greater than the diameter of axle pin, the width of second through -hole is less than the diameter of axle pin, and it is compatible with annular groove. The utility model can realize the quick unhooking when concrete hoisting, improves concrete column hoisting efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of hoisting equipment technology, and in particular relates to a hoisting tool for 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 and removal when repeatedly hoisting concrete columns, and since the concrete columns are quite tall, scaffolding also needs to be erected when removing the hooks, which seriously affects hoisting efficiency. Utility Model Content

[0005] In view of the defects or deficiencies in the existing technology, this utility model provides a lifting tool for concrete columns, which can realize quick unhooking during concrete lifting and improve the lifting efficiency of concrete columns.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An embodiment of this utility model provides a lifting tool for a concrete column, including a pin. The pin is inserted into a pre-drilled hole in the concrete column. An annular groove is formed on the outer surface of one end of the pin. A retaining plate is fitted on the outer side of the annular groove. A first through hole and a second through hole are formed in the middle of the retaining plate. The first through hole and the second through hole are connected. The diameter of the first through hole is larger than the diameter of the pin, and the width of the second through hole is smaller than the diameter of the pin and is adapted to the annular groove.

[0007] Furthermore, the first through hole is located above the second through hole. The first through hole has a semi-circular structure, and the second through hole has a U-shaped structure. The bottom end of the first through hole is connected to the top end of the second through hole.

[0008] Furthermore, reinforcing plates are provided on both sides of the upper part of the card plate, and a third through hole is provided on the reinforcing plate, which is adapted to the first through hole.

[0009] Furthermore, the sum of the thicknesses of the card plate and the reinforcing plate is greater than the width of the annular groove.

[0010] Furthermore, the length of the axle pin is greater than the width of the concrete column, and a lifting ring is welded and fixed on the axle pin on one side of the concrete column, with a first lifting lug installed on the lifting ring.

[0011] Furthermore, the clamping plate is located at the end of the shaft pin away from the lifting ring, the clamping plate and the lifting ring are symmetrically arranged, and a second lifting lug is fixed to the top of the clamping plate.

[0012] Furthermore, a balance beam is provided above the concrete column. The balance beam has the same length as the axle pin and is arranged parallel to the axle pin.

[0013] Furthermore, the first and second lifting lugs are connected to the balance beam via steel wire ropes, and both ends of the balance beam are connected to the lifting device via steel wire ropes.

[0014] Furthermore, the wire rope is fixedly connected to the first and second lifting lugs via lifting lug locks.

[0015] Furthermore, a guide rope is connected between the first lifting lug and the second lifting lug, and the guide rope extends to a location accessible to the operator after being connected to the second lifting lug.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention features an annular groove at the end of a shaft pin, with a locking plate fitted around the outside of the groove. During hoisting, the locking plate is locked within the annular groove of the shaft pin, ensuring the concrete column remains safe and stable during hoisting. After hoisting, pulling the guide rope causes the locking plate to rotate. Reinforcing plates are installed on both sides of the top of the locking plate, and the combined thickness of the locking plate and the reinforcing plates is greater than the width of the annular groove. At this point, the locking plate cannot be locked within the annular groove. When the wire rope is pulled, the locking plate and the hook disengage smoothly. This invention is suitable for reusable locations, eliminates the need for scaffolding and high-altitude operations, is safe and reliable, and significantly improves construction efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the lifting device structure in an embodiment of this 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; Among them, 1. Concrete column; 2. Lifting ring; 3. Guide rope; 4. Shaft pin; 5. Lifting lug lock; 6. Card plate; 7. Reinforcing plate; 8. Second lifting lug; 9. Annular groove; 10. First through hole; 11. Second through hole; 12. Balance beam. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] A typical embodiment of this utility model is as follows: Figure 1 As shown, a lifting device for a concrete column includes a pivot pin 4, which can be inserted into a reserved hole in a concrete column 1. The concrete column 1 is a precast concrete column in a factory. The pivot pin 4 is perpendicular to the concrete column 1, thereby using the pivot pin 4 to lift the concrete column 1.

[0020] The length of the axle pin 4 is greater than the width of the concrete column 1. A lifting ring 2 is welded and fixed on the axle pin 4 on one side of the concrete column 1. A first lifting lug is installed on the lifting ring 2. A clamping plate 6 is provided on the axle pin 4 on the other side of the concrete column 1. The clamping plate 6 is symmetrically arranged with the lifting ring 2. A second lifting lug 8 is fixed on the top of the clamping plate 6.

[0021] A balance beam 12 is installed above the concrete column 1. The balance beam 12 is the same length as the axle pin 4 and is set parallel to the axle pin 4. The first lifting lug and the second lifting lug 8 are connected to the balance beam 12 by steel wire ropes. The steel wire ropes are fixedly connected to the first lifting lug and the second lifting lug 8 by lifting lug locks 5. The setting of the balance beam 12 can ensure the stability of the hoisting. The two ends of the balance beam 12 are connected to the lifting equipment by steel wire ropes, so that the concrete column 1 can be hoisted by the lifting equipment.

[0022] Furthermore, an annular groove 9 is formed on the outer circular surface of one end of the pin 4 where the retaining plate 6 is located, and the retaining plate 6 is fitted onto the outside of the annular groove 9. Specifically, as shown in... Figure 2 As shown, the card plate 6 has a first through hole 10 and a second through hole 11 in the middle. The first through hole 10 is located above the second through hole 11 and the first through hole 10 and the second through hole 11 are connected, so that the shaft pin 4 can slide between the first through hole 10 and the second through hole 11.

[0023] Specifically, the first through hole 10 has a semi-circular structure, and the second through hole 11 has a U-shaped structure. The bottom end of the first through hole 10 is connected to the top end of the second through hole 11. The diameter of the first through hole 10 is larger than the diameter of the shaft pin 4, and the width of the second through hole 11 is smaller than the diameter of the shaft pin 4. It is adapted to the annular groove 9 so that the second through hole 11 can be fitted on the outside of the annular groove 9 without lateral movement.

[0024] Reinforcing plates 7 are provided on both sides of the upper part of the clamping plate 6. The reinforcing plates 7 have a third through hole, which is adapted to the first through hole 10. The reinforcing plates 7 are installed on the upper part of the clamping plate 6 to increase the thickness of the upper part of the clamping plate 6. The first through hole 10 on the clamping plate 6 and the second through hole 11 on the reinforcing plate 7 are flush, so that when the clamping plate 6 is rotated to complete the unhooking, the sum of the thickness of the clamping plate 6 and the reinforcing plate 7 is greater than the width of the annular groove 9, so that the clamping plate 6 cannot be locked in the annular groove 9 of the shaft pin 4, thus making it easy for the clamping plate 6 to disengage from the shaft pin 4.

[0025] A guide rope 3 connects the first lifting lug and the second lifting lug 8. After connecting to the second lifting lug 8, the guide rope 3 extends to a position convenient for the operator. When the hook needs to be unhooked after lifting, pulling the guide rope 3 causes the clamping plate 6 to flip. Figure 3 As shown, at this time, the pin 4 enters the first through hole 10 from the second through hole 11, and the annular groove 9 does not restrict the clamping plate 6, thereby disengaging the clamping plate 6 from the pin 4.

[0026] Working principle First, 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. Then, fit the clamping plate into the annular groove on the axle pin and use the annular groove to limit the clamping plate.

[0027] The first and second lifting lugs are connected in sequence by a guide rope. The length of the guide rope is then left to a position where the operator can operate. The balance beam is connected by a wire rope to hoist the concrete column.

[0028] After the concrete column is fixed, the hoisting is completed. The clamping plate is rotated by pulling the guide rope remotely. Due to the thickening of the reinforcing plate, the thickness of the clamping plate and the reinforcing plate is greater than the width of the trench. The clamping plate cannot be locked in the annular trench. When the steel wire rope is pulled, the clamping plate is successfully unhooked. Under the pull of the crane, the axle pin is pulled out from the other side of the concrete.

[0029] 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 lifting device for concrete columns, characterized in that, The device includes a pin, which is inserted into a pre-drilled hole in a concrete column. An annular groove is formed on the outer surface of one end of the pin. A retaining plate is fitted on the outer side of the annular groove. A first through hole and a second through hole are formed in the middle of the retaining plate. The first through hole and the second through hole are connected. The diameter of the first through hole is larger than the diameter of the pin, and the width of the second through hole is smaller than the diameter of the pin and is adapted to the annular groove.

2. The concrete column lifting tool as described in claim 1, characterized in that, The first through hole is located above the second through hole. The first through hole has a semi-circular structure, and the second through hole has a U-shaped structure. The bottom end of the first through hole is connected to the top end of the second through hole.

3. The concrete column lifting tool as described in claim 1, characterized in that, The card plate is provided with reinforcing plates on both sides of the upper part, and the reinforcing plates are provided with a third through hole, which is adapted to the first through hole.

4. A lifting device for concrete columns as described in claim 3, characterized in that, The combined thickness of the card plate and the reinforcing plate is greater than the width of the annular groove.

5. A lifting device for concrete columns as described in claim 1, characterized in that, The length of the axle pin is greater than the width of the concrete column. A lifting ring is welded and fixed on the axle pin on one side of the concrete column, and a first lifting lug is installed on the lifting ring.

6. A lifting device for concrete columns as described in claim 5, characterized in that, The clamping plate is located at the end of the shaft pin away from the lifting ring. The clamping plate and the lifting ring are symmetrically arranged, and a second lifting lug is fixed to the top of the clamping plate.

7. A lifting device for concrete columns as described in claim 6, characterized in that, A balance beam is installed above the concrete column. The balance beam is the same length as the axle pin and is set parallel to the axle pin.

8. A lifting device for concrete columns as described in claim 7, characterized in that, The first and second lifting lugs are connected to the balance beam by steel wire ropes, and both ends of the balance beam are connected to the lifting device by steel wire ropes.

9. A lifting device for concrete columns as described in claim 8, characterized in that, The wire rope is fixedly connected to the first and second lifting lugs via lifting lug locks.

10. A lifting device for concrete columns as described in claim 9, characterized in that, A guide rope connects the first lifting lug and the second lifting lug. After the guide rope is connected to the second lifting lug, it extends to a location accessible to the operator.

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