All-in-one machine clamp for elastic clamping type connection of prefabricated square piles in stiff composite piles

Abstract

The utility model discloses an all-in-one machine clamp for elastic clamping type connection of prefabricated square piles in stiff composite piles, which comprises an upper clamp arranged on an upper stiff composite pile and a lower clamp arranged on a lower stiff composite pile, the upper clamp comprises an upper main body, the upper main body is provided with a group of upper clamping mechanisms used for clamping the upper stiff composite pile, and the lower main body is provided with a group of lower clamping mechanisms used for clamping the lower stiff composite pile. The lower clamp comprises a lower main body, and the lower main body is provided with a set of lower clamping mechanisms used for clamping a lower stiff composite pile. The device is not limited by the size of a composite pile, prefabricated square piles of any size can be constructed, the construction cost is saved, the situation that in the construction process of small-size square piles, the square piles are scrapped due to the fact that elastic clamping type connection is not reliable is avoided, and potential quality hazards of engineering piles are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of composite pile clamps, and in particular relates to an integrated machine clamp for elastically connecting prefabricated square piles in rigid composite piles. Background Art

[0002] In the past three years, the construction pile foundation projects have promoted the use of more rigid composite piles. The construction cost of this pile is higher than that of precast piles, but lower than that of bored cast-in-place piles. It is a new type of pile between precast piles and cast-in-place piles. This pile effectively solves the problem of better pile formation due to soil layer reasons during the construction process and meets the requirements of engineering design. The construction of precast piles mainly relies on static pressure piles to form piles. It is a type of soil-squeezing pile. It is difficult to ensure that the pile top elevation meets the design requirements during the construction process, which often causes quality problems such as under-delivery. Cast-in-place piles are a type of non-squeezing piles, but in the actual construction process, it will cause the collapse and shrinkage of the hole, and the steel cage cannot fit into the pile hole, which leads to quality problems. The design and promotion of rigid composite piles solves the quality problems such as under-delivery during the pile formation process, and has good force and convenient pile formation process. It is a comprehensive process of squeezing and non-squeezing soil. It first uses a drilling machine to drill holes and spray grouting, and then combines the rigidity characteristics of precast piles to form a pile type by combining the two materials. The construction process is not complicated and the impact on the construction environment is small.

[0003] Generally, the design requires that the basement piles be pull-out piles, and mechanical connection methods will be used. There are currently two types of mechanical connection methods: clamp connection and spring-clip connection. For spring-clip connection, prefabricated square piles are designed in sizes of 500mm×500mm and 400mm×400mm according to the national standard atlas. The effective length of a pile section is 15 meters. Based on the construction conditions, 500mm×500mm square piles can be lifted and centered by a crane, and the piles can be smoothly engaged by their own weight. However, 400mm×400mm square piles cannot be fully engaged by their own weight, so clamps are needed to assist in the engagement. Utility Model Content

[0004] In view of the above problems, the purpose of the utility model is to provide an integrated clamp for elastically connecting prefabricated square piles in rigid composite piles.

[0005] The specific technical solutions are as follows:

[0006] An integrated clamp for elastically connecting prefabricated square piles in rigid composite piles, comprising an upper clamp installed on an upper rigid composite pile and a lower clamp installed on a lower rigid composite pile, wherein the upper clamp comprises an upper main body, on which is provided a group of upper clamping mechanisms for clamping the upper rigid composite pile, and the lower clamp comprises a lower main body, on which is provided a group of lower clamping mechanisms for clamping the lower rigid composite pile.

[0007] Furthermore, an upper mounting frame for vertically inserting an upper rigid composite pile is provided on the upper main body, and a group of upper clamping mechanisms are arranged circumferentially toward the center of the upper mounting frame; a lower mounting frame for vertically inserting a lower rigid composite pile is provided on the lower main body, and a group of lower clamping mechanisms are arranged circumferentially toward the center of the lower mounting frame.

[0008] Furthermore, the upper clamping mechanism includes a first hydraulic pump and a first clamp, the first clamp is arranged at the telescopic end of the first hydraulic pump and is located in the upper mounting frame; the lower clamping mechanism includes a second hydraulic pump and a second clamp, the second clamp is arranged at the telescopic end of the second hydraulic pump and is located in the lower mounting frame.

[0009] Furthermore, the outer side surfaces of the first clamping piece and the second clamping piece are provided with strip-shaped corrugations to enhance the friction between the clamping pieces and the composite pile.

[0010] Furthermore, the edges of the upper body and the lower body are respectively provided with guide wheels for setting the prefabricated square pile integrated machine clamp on the upper and lower sliding shaft rods, thereby realizing smooth up and down sliding of the upper body and the lower body.

[0011] Furthermore, a jack is provided on the upper surface of the upper body for pushing the upper body to move up and down.

[0012] Furthermore, a first hydraulic pipe is provided on the lower surface of the upper body, and a second hydraulic pipe is provided on the lower surface of the lower body. The first hydraulic pipe connects the first hydraulic pump and the power equipment, and the second hydraulic pipe connects the second hydraulic pump and the power equipment. The power equipment pushes all the first hydraulic pumps and all the second hydraulic pumps forward or backward respectively to complete the clamping or releasing action of the upper clamp and the lower clamp respectively.

[0013] The beneficial effects of the utility model are:

[0014] The utility model is not limited by the size of the composite pile, and can construct prefabricated square piles of any size, thereby saving engineering costs, avoiding the scrapping of small-sized square piles due to unreliable spring-clip connection during construction, and reducing the quality risks of engineering piles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the internal structure of the upper clamp of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the lower clamp of the utility model;

[0017] Figure 3 It is a schematic diagram of the assembly of the utility model;

[0018] Figure 4 It is a bottom view of the utility model.

[0019] In the figure: 1. upper rigid composite pile; 2. upper clamp; 21. upper main body; 211. upper mounting frame; 22. upper clamping mechanism; 221. first hydraulic pump; 222. first clamping piece; 23. first hydraulic pipe; 3. lower rigid composite pile; 4. lower clamp; 41. lower main body; 411. lower mounting frame; 42. lower clamping mechanism; 421. second hydraulic pump; 422. second clamping piece; 43. second hydraulic pipe; 5. strip corrugation; 6. guide wheel; 7. jack. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the drawings in the specification, but the protection scope of the utility model is not limited thereto.

[0021] like Figure 1 As shown, the upper clamp 2 includes an upper main body 21 and an upper clamping mechanism 22. The upper main body 21 is provided with an upper mounting frame 211 for vertically inserting the upper rigid composite pile 1. A group of upper clamping mechanisms 22 are arranged circumferentially toward the center of the upper mounting frame 211. Each upper clamping mechanism 22 includes a first hydraulic pump 221 and a first clamping piece 222. The first clamping piece 222 is arranged at the telescopic end of the first hydraulic pump 221 and is located in the upper mounting frame 211. The outer side surface of the first clamping piece 222 is provided with strip corrugations 5. The edge of the upper main body 21 is provided with a guide wheel 6 for setting the prefabricated square pile integrated machine clamp on the upper and lower sliding shafts.

[0022] like Figure 2 As shown, the lower clamp 4 includes a lower main body 41 and a lower clamping mechanism 42. The lower main body 41 is provided with a lower mounting frame 411 for vertically inserting the lower rigid composite pile 3. A group of lower clamping mechanisms 42 are arranged circumferentially toward the center of the lower mounting frame 411. Each lower clamping mechanism 42 includes a second hydraulic pump 421 and a second clamping piece 422. The second clamping piece 422 is arranged at the telescopic end of the second hydraulic pump 421 and is located in the lower mounting frame 411. The outer side surface of the second clamping piece 422 is provided with strip corrugations 5. The edges of the lower main body 41 are respectively provided with guide wheels 6 for setting the prefabricated square pile integrated machine clamp on the upper and lower sliding shafts.

[0023] like Figure 4 As shown, a first hydraulic pipe 23 is provided on the lower surface of the upper body 21, and a second hydraulic pipe 43 is provided on the lower surface of the lower body 41. The first hydraulic pipe 23 connects the first hydraulic pump 221 and the power equipment, and the second hydraulic pipe 43 connects the second hydraulic pump 421 and the power equipment.

[0024] like Figure 3As shown, an integrated clamp for connecting prefabricated square piles in a spring-clip type in a rigid composite pile comprises an upper clamp 2 installed on an upper rigid composite pile 1 and a lower clamp 4 installed on a lower rigid composite pile 3. A jack 7 for pushing the upper main body 21 to move up and down is provided on the upper surface of the upper main body 21. The lower rigid composite pile 3 is passed through the lower mounting frame 411 of the lower clamp 4 in advance, and then the power equipment is turned on and all the second hydraulic pumps 421 are started at the same time, and the second clamp 422 is pushed at the same time to embrace and clamp the lower rigid composite pile 3, and the upper rigid composite pile 1 is passed through the upper mounting frame 211 of the upper clamp 2, and then the power equipment is turned on and all the second hydraulic pumps 421 are started at the same time, and the second clamp 422 is pushed at the same time to embrace and clamp the lower rigid composite pile 3. All the first hydraulic pumps 221 are started, and the first clamping pieces 222 are pushed at the same time to embrace and clamp the upper rigid composite pile 1, and the upper rigid composite pile 1 is moved downward by the jack 7 to generate pressure, so that the bolt tenons on the upper rigid composite pile 1 spring into the pile holes of the lower rigid composite pile 3, so that the upper rigid composite pile 1 and the lower rigid composite pile 3 are connected by spring-clip, and then all the second hydraulic pumps 421 are started at the same time, so that all the second clamping pieces 422 retreat to their original states, and the lower rigid composite pile 3 is released from the clamping of the lower clamp 3, and the upper clamp 2 continues to clamp the upper rigid composite pile 1 and continues to push downward to drive the connected composite pile into the soil.

Claims

1. An integrated clamp for elastically connecting prefabricated square piles in rigid composite piles, characterized in that: The invention comprises an upper clamp (2) installed on an upper rigid composite pile (1) and a lower clamp (4) installed on a lower rigid composite pile (3), wherein the upper clamp (2) comprises an upper main body (21), and the upper main body (21) is provided with a group of upper clamping mechanisms (22) for clamping the upper rigid composite pile (1), and the lower clamp (4) comprises a lower main body (41), and the lower main body (41) is provided with a group of lower clamping mechanisms (42) for clamping the lower rigid composite pile (3).

2. The one-piece clamp for elastically connecting prefabricated square piles in rigid composite piles according to claim 1, characterized in that: An upper mounting frame (211) for vertically inserting an upper rigid composite pile (1) is provided on the upper body (21), and a group of upper clamping mechanisms (22) are arranged circumferentially toward the center of the upper mounting frame (211); and a lower mounting frame (411) for vertically inserting a lower rigid composite pile (3) is provided on the lower body (41), and a group of lower clamping mechanisms (42) are arranged circumferentially toward the center of the lower mounting frame (411).

3. The one-piece clamp for elastically connecting prefabricated square piles in rigid composite piles as claimed in claim 2, characterized in that: The upper clamping mechanism (22) comprises a first hydraulic pump (221) and a first clamping piece (222), the first clamping piece (222) being arranged at the telescopic end of the first hydraulic pump (221) and being located in the upper mounting frame (211); the lower clamping mechanism (42) comprises a second hydraulic pump (421) and a second clamping piece (422), the second clamping piece (422) being arranged at the telescopic end of the second hydraulic pump (421) and being located in the lower mounting frame (411).

4. The one-piece clamp for elastically connecting prefabricated square piles in rigid composite piles as claimed in claim 3, characterized in that: The outer side surfaces of the first clamping piece (222) and the second clamping piece (422) are provided with strip-shaped corrugations (5).

5. The one-piece clamp for elastically connecting prefabricated square piles in rigid composite piles as claimed in claim 2, characterized in that: The edges of the upper body (21) and the lower body (41) are respectively provided with guide wheels (6) for setting the prefabricated square pile integrated machine clamp on the upper and lower sliding shafts.

6. The one-piece clamp for elastically connecting prefabricated square piles in rigid composite piles as claimed in claim 2, characterized in that: A jack (7) is provided on the upper surface of the upper body (21) for pushing the upper body (21) to move up and down.

7. The one-piece clamp for elastically connecting prefabricated square piles in rigid composite piles as claimed in claim 3, characterized in that: A first oil pressure pipe (23) is provided on the lower surface of the upper body (21), and a second oil pressure pipe (43) is provided on the lower surface of the lower body (41). The first oil pressure pipe (23) connects the first oil pressure pump (221) and the power equipment, and the second oil pressure pipe (43) connects the second oil pressure pump (421) and the power equipment.

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