Steel casing convenient to disassemble

Abstract

The utility model relates to the technical field of steel casings, in particular to a steel casing convenient to disassemble, which comprises an upper casing and a lower casing, four upper connecting structures are arranged on the lower portion of the outer surface of the upper casing, and four lower connecting structures are arranged on the upper portion of the outer surface of the lower casing. When the upper connecting structure and the lower connecting structure are connected, the deflector rod is clamped at the ratchet of the ratchet wheel, at the moment, the upper connecting structure and the lower connecting structure cannot be separated, when the upper protective cylinder and the lower protective cylinder need to be separated after pouring forming, a long rod is taken to be inserted into the inserting groove, one end of the long rod reaches the connecting rod, the connecting rod is extruded towards one side, and the spring is shrunk; the connecting rod drives the shifting rod to be separated from the ratchet, at the moment, the lifting machine is connected with the second lifting lug, the balancing weight drives the sliding rod to be lifted, the upper connecting structure and the lower connecting structure are separated, then the lifting machine is connected with the first lifting lug, and therefore the upper pile casing and the lower pile casing can be separated. And the upper pile casing and the lower pile casing are convenient to disassemble and can be reused.

Description

Technical Field

[0001] The utility model relates to the technical field of steel casing, in particular to a steel casing which is convenient to disassemble. Background Technique

[0002] In bored cast-in-place piles, steel casings are often buried to locate the pile positions to be drilled. The casing is a steel casing with a wall thickness of 10 mm. When positioning the casing, first take the pile center as the center of the circle, and determine the position of the casing on the soil according to the radius of the casing. After the casing is in place, apply pressure to bury the casing about 50 cm. If it is difficult to press down, a part of the soil at the hole position can be dug out first, and then the casing is placed and buried underground. During the burying process, it should be checked whether the casing is vertical. If deviation is found, it should be corrected in time. After the onshore casing is buried and in place, the outside of the casing is backfilled and compacted with clay to prevent water leakage around the casing. The backfill thickness is about 40 - 45 cm, the top height is 0.4 - 0.6 m higher than the (water surface) ground, and the deviation of the casing position from the hole center shall not be greater than 50 mm.

[0003] When cast-in-place piles with special requirements are being poured and formed currently, in order to ensure the quality of the formed cast-in-place piles, a steel casing needs to be set at the upper part. After the pile is formed, the steel casing of the over-poured part needs to be cut before the redundant part can be chiseled off. The cut steel casing causes waste of resources because it cannot be reused, the process is relatively cumbersome and the construction period is relatively long. Based on the existing technical deficiencies, the utility model designs a steel casing which is convenient to disassemble. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model provides a steel casing which is convenient to disassemble, and has the advantages that the upper and lower casings are convenient to disassemble and can be reused after pouring and forming.

[0005] The utility model provides the following technical solution: a steel casing which is convenient to disassemble, including an upper casing and a lower casing. Four upper connection structures are arranged on the lower part of the outer surface of the upper casing, and four lower connection structures are arranged on the upper part of the outer surface of the lower casing; the four upper connection structures include first fixed groove plates. Two sliding rods are slidably installed inside the four first fixed groove plates. A pressing plate is installed at the bottom of the two sliding rods. A lever is rotatably installed inside the pressing plate. A side plate is installed at the top of the pressing plate. A connecting rod is rotatably installed on the outer surface of the lever. A plurality of springs are installed on one side of the connecting rod, and one ends of the plurality of springs are fixedly connected with the side plate; the four lower connection structures include second fixed groove plates. Rotating rods are rotatably installed inside the four second fixed groove plates, and ratchets are installed on the outer surfaces of the four rotating rods.

[0006] As a preferred technical solution of the utility model, a counterweight is installed at one end of the top of the two rotating rods, and second lifting lugs are installed on both sides of the top of the counterweight.

[0007] As a preferred technical solution of the present utility model, a slot is provided inside the counterweight, and the slot communicates with the second fixed groove plate.

[0008] As a preferred technical solution of the present utility model, the lever is stuck in the ratchet teeth of the ratchet wheel.

[0009] As a preferred technical solution of the present utility model, two first lifting lugs are installed at the top of the upper casing.

[0010] As a preferred technical solution of the present utility model, an insertion ring is installed at the bottom of the upper casing.

[0011] As a preferred technical solution of the present utility model, a connection groove is provided at the top of the lower casing, and the connection groove can be closely attached to the insertion ring.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] 1. For this steel casing that is easy to disassemble, through the upper connection structure and the lower connection structure, when the upper connection structure and the lower connection structure are connected, the lever is stuck in the ratchet teeth of the ratchet wheel. At this time, the upper connection structure and the lower connection structure cannot be separated. When the casting is formed and it is necessary to separate the upper casing and the lower casing, take a long rod and insert it into the slot so that one end reaches the connecting rod. At this time, squeeze the connecting rod to one side to make the spring contract, so that the connecting rod drives the lever to disengage from the ratchet teeth. At this time, it can be connected to the second lifting lug through a crane, and the counterweight is driven to lift the sliding rod, so that the upper connection structure is separated from the lower connection structure. Finally, connect the crane to the first lifting lug, so that the upper casing can be separated from the lower casing, achieving the purpose that the upper casing and the lower casing are easy to disassemble and can be reused after the casting is formed;

[0014] 2. For this steel casing that is easy to disassemble, through the insertion ring and the connection groove, when connecting the upper casing and the lower casing, by inserting the insertion ring into the connection groove, the connection between the upper casing and the lower casing can be made more tight, thereby improving the connection sealing performance of the upper casing and the lower casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the external structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the structure of the first lifting lug of the present utility model;

[0017] Figure 3 is a schematic diagram of the structure of the counterweight of the present utility model;

[0018] Figure 4 is a schematic diagram of the structure of the spring of the present utility model.

[0019] In the figure: 1. Upper casing; 101. First lifting lug; 102. Insertion ring; 2. Lower casing; 201. Connecting groove; 3. Upper connecting structure; 31. First fixed groove plate; 32. Sliding rod; 33. Counterweight; 34. Second lifting lug; 35. Slot; 36. Pressure plate; 37. Poking rod; 38. Side plate; 39. Connecting rod; 310. Spring; 4. Lower connecting structure; 41. Second fixed groove plate; 42. Rotating rod; 43. Ratchet wheel. Detailed implementation manners

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1-4 , a steel casing that is easy to disassemble, including an upper casing 1 and a lower casing 2. Four upper connecting structures 3 are arranged on the lower part of the outer surface of the upper casing 1, and four lower connecting structures 4 are arranged on the upper part of the outer surface of the lower casing 2; the four upper connecting structures 3 include first fixed groove plates 31. Two sliding rods 32 are slidably installed inside the four first fixed groove plates 31. A pressure plate 36 is installed at the bottom of the two sliding rods 32. A poking rod 37 is rotatably installed inside the pressure plate 36. A side plate 38 is installed at the top of the pressure plate 36. A connecting rod 39 is rotatably installed on the outer surface of the poking rod 37. A plurality of springs 310 are installed on one side of the connecting rod 39. One ends of the plurality of springs 310 are fixedly connected to the side plate 38; the four lower connecting structures 4 include second fixed groove plates 41. Rotating rods 42 are rotatably installed inside the four second fixed groove plates 41. Ratchet wheels 43 are installed on the outer surfaces of the four rotating rods 42.

[0022] Please refer to Figures 3-4 , one ends of the tops of the two rotating rods 42 are installed with counterweights 33. Second lifting lugs 34 are installed on both sides of the top of the counterweights 33. A slot 35 is opened inside the counterweights 33. The slot 35 communicates with the second fixed groove plate 41. The poking rod 37 is stuck in the ratchet teeth of the ratchet wheel 43.

[0023] When the upper connecting structure 3 and the lower connecting structure 4 are connected, the lever 37 is stuck at the ratchet teeth of the ratchet wheel 43. At this time, the upper connecting structure 3 and the lower connecting structure 4 cannot be separated. After the casting is formed, when it is necessary to separate the upper casing 1 and the lower casing 2, take a long rod and insert it into the slot 35 so that one end reaches the connecting rod 39. At this time, squeeze the connecting rod 39 to one side to contract the spring 310, so that the connecting rod 39 drives the lever 37 to disengage from the ratchet teeth. At this time, the crane can be connected to the second lifting lug 34 to lift the counterweight 33 and drive the sliding rod 32, so as to separate the upper connecting structure 3 from the lower connecting structure 4. Finally, connect the crane to the first lifting lug 101, thereby separating the upper casing 1 from the lower casing 2.

[0024] Please refer to Figures 1-2 , two first lifting lugs 101 are installed at the top of the upper casing 1. An insertion ring 102 is installed at the bottom of the upper casing 1. A connection groove 201 is provided at the top of the lower casing 2, and the connection groove 201 can be closely attached to the insertion ring 102.

[0025] When connecting the upper casing 1 and the lower casing 2, by inserting the insertion ring 102 into the connection groove 201, the connection between the upper casing 1 and the lower casing 2 can be made closer, thereby improving the connection sealing performance of the upper casing 1 and the lower casing 2.

[0026] Working principle: When a steel casing that is easy to disassemble is used, in the initial state, the lever 37 is stuck at the ratchet teeth of the ratchet wheel 43, and the insertion ring 102 is inserted into the connection groove 201. At this time, the upper connecting structure 3 and the lower connecting structure 4 are tightly connected and cannot be separated. After the casting is formed, when it is necessary to separate the upper casing 1 and the lower casing 2, take a long rod and insert it into the slot 35 so that one end reaches the connecting rod 39. At this time, squeeze the connecting rod 39 to one side to contract the spring 310, so that the connecting rod 39 drives the lever 37 to disengage from the ratchet teeth. At this time, the crane can be connected to the second lifting lug 34 to lift the counterweight 33 and drive the sliding rod 32, so as to separate the upper connecting structure 3 from the lower connecting structure 4. Finally, connect the crane to the first lifting lug 101, thereby separating the upper casing 1 from the lower casing 2.

[0027] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel casing that is easy to disassemble, comprising an upper casing (1) and a lower casing (2), characterized in that: Four upper connection structures (3) are arranged at the lower part of the outer surface of the upper casing (1), and four lower connection structures (4) are arranged at the upper part of the outer surface of the lower casing (2); The four upper connection structures (3) include a first fixed slot plate (31), two sliding rods (32) are slidably installed inside the four first fixed slot plates (31), a pressure plate (36) is installed at the bottom of the two sliding rods (32), a shifting rod (37) is rotatably installed inside the pressure plate (36), a side plate (38) is installed on the top of the pressure plate (36), a connecting rod (39) is rotatably installed on the outer surface of the shifting rod (37), a plurality of springs (310) are installed on one side of the connecting rod (39), and one end of the plurality of springs (310) is fixedly connected to the side plate (38); The four lower connection structures (4) comprise a second fixed slot plate (41), a rotating rod (42) is rotatably mounted inside the four second fixed slot plates (41), and a ratchet (43) is mounted on the outer surface of the four rotating rods (42).

2. The easily disassembled steel casing according to claim 1, characterized in that: A counterweight block (33) is installed at one end of the top of the two rotating rods (42), and second lifting ears (34) are installed on both sides of the top of the counterweight block (33).

3. The easily disassembled steel casing according to claim 2, characterized in that: A slot (35) is provided inside the counterweight block (33), and the slot (35) is communicated with the second fixed slot plate (41).

4. The easily disassembled steel casing according to claim 1, characterized in that: The lever (37) is clamped in the ratchet teeth of the ratchet wheel (43).

5. The easily disassembled steel casing according to claim 4, characterized in that: Two first lifting ears (101) are installed on the top of the upper casing (1).

6. The easily disassembled steel casing according to claim 1, characterized in that: An insert ring (102) is installed at the bottom of the upper casing (1).

7. The easily disassembled steel casing according to claim 1, characterized in that: The top of the lower casing (2) is provided with a connection groove (201), and the connection groove (201) and the insert ring (102) can fit tightly.

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