Pressure-driven plunger separation structure of cast-in-place pile

Abstract

The utility model relates to a pressure-driven cast-in-place pile plunger separation structure which comprises a support ring, a first limiting ring is arranged at the front end of a guide pipe, the top of the support ring is in sliding contact with the first limiting ring, and a second limiting ring in contact with the upper edge of the first limiting ring is fixed to the bottom of the support ring. An elastic connector is arranged at the top of the bracket ring; the inserting ring is fixed to the top of the plunger through a connecting column, and a plurality of connecting rods are arranged on the inserting ring in an annular array mode; a connecting cylinder is integrally arranged on the upper portion of a support ring, an inserting ring is fixed to the inner ring of the connecting cylinder, an elastic connector comprises a plurality of sets of elastic swing rods, a supporting cylinder is coaxially fixed to the outer side, corresponding to the connecting cylinder, of the support ring, elastic connecting rings are fixed to the elastic swing rods, and the elastic connecting rings are rotationally connected to the wall face of the supporting cylinder. One end of the elastic swing rod extends out towards the outer side wall of the connecting cylinder and is used for making contact with the first limiting ring, and a clamping block is connected to the other end of the elastic swing rod and is used for making contact with the surface of the connecting rod.

Description

Technical Field

[0001] The utility model relates to a plunger separation structure of a pressure-driven cast-in-place pile, belonging to the field of cast-in-place pile technology. Background Art

[0002] At present, underwater bored piles mainly use the conduit method. During construction, in order to prevent water flow and debris from entering the conduit, the bottom end of the pipe can be plugged before lowering the pipe. The plug can be flushed open by the weight of the first tank of concrete so that the concrete can be poured into place. During deep water operations, the pipe must be prevented from floating. When lowering the pipe, the pipe can be filled with water, and a rubber ball close to the pipe wall can be installed on the top of the pipe. Then concrete is poured in and the ball is pressed out along the pipe, and pouring can be carried out. However, this method will cause the rubber ball to be squeezed into the concrete pile, affecting the quality of the entire concrete pile. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the technical problems in the prior art and provide a plunger separation structure of a pressure-driven cast-in-place pile.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A plunger separation structure of a pressure-driven cast-in-place pile comprises a conduit for casting and a plunger fixed to the end of the conduit;

[0006] Also includes:

[0007] The support ring, the front end of the catheter is provided with a first limiting ring, the bottom of the support ring is in sliding contact with the first limiting ring, and the top of the support ring is fixed with a second limiting ring in contact with the upper edge of the first limiting ring; the top of the support ring is provided with an elastic connector;

[0008] A plug-in ring, a connecting column is integrally provided on the top of the plunger, the plug-in ring is integrally fixed to the top of the plunger through the connecting column, a plurality of connecting rods are arranged in a circular array on the plug-in ring, the connecting rods penetrate the bracket ring and are connected to the elastic connector;

[0009] The anti-fouling ring has a connecting tube integrally arranged on the upper part of the bracket ring. The inner ring of the connecting tube is fixed with the plug-in ring. The inner ring of the anti-fouling ring is slidably connected with the outer ring of the connecting tube. The outer ring of the anti-fouling ring is slidably connected with the inner wall of the conduit.

[0010] Among them, the elastic connector includes several groups of elastic swing rods, a support tube is coaxially fixed to the outer side of the bracket ring corresponding to the connecting tube, an elastic connecting ring is fixed on the elastic swing rod, the elastic connecting ring is rotatably connected to the wall surface of the support tube, the elastic swing rod is rotatably connected relative to the connecting tube through the elastic connecting ring, one end of the elastic swing rod extends toward the outer side wall of the connecting tube for contacting with the first limit ring, and a clamping block is connected to the other end of the elastic swing rod, and the clamping block is used to contact with the surface of the connecting rod.

[0011] As a further improvement of the utility model, a push ring is integrally arranged at the bottom of the anti-fouling ring, and the push ring is used to push the end of the elastic swing rod to unlock the connector.

[0012] As a further improvement of the utility model, an introduction slope which is inclined toward the outside of the connecting tube and is used to guide the end of the connecting rod is arranged at the bottom of the clamping block.

[0013] As a further improvement of the utility model, a connecting groove is provided on the surface of the clamping block facing away from the surface of the connecting rod, and the clamping blocks on each elastic swing rod are elastically connected through elastic rings embedded in each connecting groove.

[0014] As a further improvement of the utility model, the outer ring of the plug-in ring is provided with an annular sealing platform made of rubber material, and the sealing platform is in sealing contact with the front end of the catheter.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model realizes locking and unlocking of the plunger through a reusable separate lock structure. The lock structure in the catheter can be used repeatedly, the construction cost is low, and the locking is relatively stable.

[0017] 2. The push ring can assist in unlocking the plunger when the concrete is squeezed for the anti-fouling ring, further improving the unlocking efficiency.

[0018] 3. The introduction slope can facilitate the convenience of plunger assembly.

[0019] 4. The elastic ring can ensure that the tops of each clamping ring are in the same position when relaxed, which facilitates the uniform insertion of each connecting rod.

[0020] 5. The sealing platform can improve the sealing performance of the entire plug-in structure and reduce the possibility of water intrusion into the locking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a cross-sectional schematic diagram of the utility model;

[0023] In the figure: 1. catheter; 2. bracket ring; 3. sliding ring; 4. second limiting ring; 5. first limiting ring; 6. connecting tube; 7. supporting tube; 8. elastic swing rod; 9. elastic connecting ring; 10. clamping block; 11. connecting groove; 12. anti-fouling ring; 13. pushing ring; 14. sealing platform; 15. plug-in tube; 16. connecting column; 17. plunger; 18. connecting rod. DETAILED DESCRIPTION

[0024] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0025] like Figure 1 , a plunger separation structure of a pressure-driven cast-in-place pile, which mainly comprises a conduit for pouring concrete and a plunger connected to the end of the conduit through the separation structure;

[0026] The separation structure mainly includes a support ring arranged at the front end of the catheter, a first limiting ring is arranged at the front end of the catheter, a sliding ring is integrally fixed to the bottom periphery of the support ring, the sliding ring is in sliding contact with the first limiting ring, and a second limiting ring in contact with the upper edge of the first limiting ring is fixed on the top of the sliding ring;

[0027] The separation structure also includes a connecting tube coaxially fixed to the inner ring of the bracket ring, a plug-in ring is fixed on the top of the plunger, a plug-in tube is integrally fixed to the inner ring of the plug-in ring, a connecting column is integrally arranged on the top of the plunger, the connecting column is embedded in the plug-in tube and bonded and fixed to the plug-in ring, and the outer ring of the plug-in tube is inserted into the inner wall of the connecting tube; a plurality of connecting rods are arranged in an annular array on the plug-in ring; an annular sealing platform made of rubber material is arranged on the outer ring of the plug-in ring, and the sealing platform is in sealing contact with the end of the catheter;

[0028] The separation structure also includes a support tube arranged between the connecting tube and the sliding ring, a plurality of elastic connecting rings are arranged in a ring array on the support tube, a sliding opening is provided on the support tube, the elastic connecting ring penetrates the sliding opening and is rotatably connected relative to the wall surface of the support tube, an elastic swing rod is integrally fixed on the elastic connecting ring, one end of the elastic swing rod is pressed to the upper edge of the first limiting ring under the driving of the elastic force of the elastic connecting ring, a clamping block is swingably connected to one end of the elastic swing rod, a clamping surface contacting the connecting rod is provided on the top of the clamping block, a connecting groove is provided on the outer side of the clamping block, and each clamping block is supported by a spring ring embedded in the connecting groove of each clamping block to prevent the clamping block from swinging excessively and failing to accurately contact the surface of the connecting rod; an introduction slope is provided on the lower edge of the clamping block, and the top end of the connecting rod can slide onto the clamping surface through the introduction slope;

[0029] An anti-fouling ring is also slidably connected to the connecting tube, the inner ring of the anti-fouling ring is slidably sealed to the outer wall of the connecting tube, the outer ring of the anti-fouling ring is slidably sealed to the inner wall of the conduit, and a pushing ring is coaxially fixed to the anti-fouling ring, the end of the pushing ring is used to contact the elastic swing rod.

[0030] During assembly, first, during the casting process, the plug-in ring is cast as a whole with the plunger, and at the same time, the connecting rod is inserted through the plug-in ring into the plunger. Subsequently, the plunger is inserted into the inner wall of the connecting tube pre-placed in the catheter through the plug-in tube on the plug-in ring. At the same time, the connecting rod passes through the bracket ring and is clamped and pressed by the clamping block. At the same time, the other end of the elastic swing rod is pressed to the upper edge of the first limit ring under the push of the lever of the clamping block.

[0031] During construction, first pour concrete into the entire conduit and make the conduit sink into the water layer. After it sinks into place, continue to fill the conduit with concrete to increase the deadweight of the entire conduit. At this time, the conduit pushes the plunger, which further overcomes the elastic force of the rubber of the sealing platform and is pushed into the conduit, causing the sliding ring to slide relative to the first limiting ring, increasing the distance between the end of the elastic swing rod and the first limiting ring, and relaxing one end of the elastic swing rod. At this time, the friction between the clamping block and the connecting rod becomes smaller, and at the same time, the gravity of the concrete pushes the anti-fouling ring downward, and the pushing ring at the end of the anti-fouling ring synchronously pushes the elastic swing rod, causing the clamping block and the connecting rod to further loosen. Finally, under the push of the deadweight of the concrete, the plug-in tube and the connecting tube are separated, thereby separating the plunger from the conduit, and then the concrete can be poured through the conduit.

[0032] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A plunger separation structure of a pressure-driven cast-in-place pile, comprising a conduit for casting and a plunger fixed to the end of the conduit; wherein: Also includes: The support ring, the front end of the catheter is provided with a first limiting ring, the bottom of the support ring is in sliding contact with the first limiting ring, and the top of the support ring is fixed with a second limiting ring in contact with the upper edge of the first limiting ring; the top of the support ring is provided with an elastic connector; A plug-in ring, a connecting column is integrally provided on the top of the plunger, the plug-in ring is integrally fixed to the top of the plunger through the connecting column, a plurality of connecting rods are arranged in a circular array on the plug-in ring, the connecting rods penetrate the bracket ring and are connected to the elastic connector; The anti-fouling ring has a connecting tube integrally arranged on the upper part of the bracket ring. The inner ring of the connecting tube is fixed with the plug-in ring. The inner ring of the anti-fouling ring is slidably connected with the outer ring of the connecting tube. The outer ring of the anti-fouling ring is slidably connected with the inner wall of the conduit. Among them, the elastic connector includes several groups of elastic swing rods, a support tube is coaxially fixed to the outer side of the bracket ring corresponding to the connecting tube, an elastic connecting ring is fixed on the elastic swing rod, the elastic connecting ring is rotatably connected to the wall surface of the support tube, the elastic swing rod is rotatably connected relative to the connecting tube through the elastic connecting ring, one end of the elastic swing rod extends toward the outer side wall of the connecting tube for contacting with the first limit ring, and a clamping block is connected to the other end of the elastic swing rod, and the clamping block is used to contact with the surface of the connecting rod.

2. The plunger separation structure of a pressure-driven cast-in-place pile according to claim 1, characterized in that: A push ring is integrally arranged at the bottom of the anti-fouling ring, and the push ring is used to push the end of the elastic swing rod to unlock the connector.

3. The plunger separation structure of a pressure-driven cast-in-place pile according to claim 1, characterized in that: A leading-in inclined surface inclined toward the outside of the connecting tube for leading the end of the connecting rod is arranged at the bottom of the clamping block.

4. A plunger separation structure for a pressure-driven cast-in-place pile as claimed in claim 3, characterized in that: A connection groove is arranged on the surface of the clamping block which is opposite to the surface of the connecting rod, and the clamping blocks on each elastic swing rod are elastically connected through elastic rings embedded in each connection groove.

5. The plunger separation structure of a pressure-driven cast-in-place pile according to claim 1, characterized in that: The outer ring of the plug-in ring is provided with an annular sealing platform made of rubber material, and the sealing platform is in sealing contact with the front end of the catheter.

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