CN215329845U

CN215329845U - Precast concrete component and connecting piece thereof

Info

Publication number: CN215329845U
Application number: CN202120133430.6U
Authority: CN
Inventors: 张耀文; 邱振贵; 李龙
Original assignee: Guangdong Sanhe Pile Co Ltd
Current assignee: Guangdong Sanhe Pile Co Ltd
Priority date: 2021-01-18
Filing date: 2021-01-18
Publication date: 2021-12-28
Anticipated expiration: 2031-01-18

Abstract

The utility model discloses a precast concrete component and a connecting piece thereof, wherein the connecting piece comprises an inserted bar, a first sleeve and a clamping piece barrel, the clamping piece barrel comprises a clamping piece barrel main body and a clamping piece arranged on the clamping piece barrel main body, a first connecting part used for being connected with a steel bar is arranged on the clamping piece barrel main body, the clamping piece barrel can be mutually fixed with the first sleeve through threads, in addition, the clamping piece is positioned in the first sleeve in a fixed state, and a plug of the inserted bar can be inserted into the first sleeve and is clamped with the clamping piece. The utility model has the following advantages: the integrity is good, the inserted bar can be accurately clamped into the clamping piece, the connection is easy, and the failure rate is low; the specification of the clamping piece is not limited by the general size of the tensioning part of the sleeve, so that the tensile bearing capacity is higher compared with that of a mechanical joint in the prior art; the first sleeve and the clamping piece barrel can be installed in advance by a manufacturer in batch processing, the production time does not need to be occupied, the efficiency of a production stage and a construction stage is improved, and the time cost is saved.

Description

Precast concrete component and connecting piece thereof

Technical Field

The utility model relates to the technical field of precast concrete members, in particular to a precast concrete member and a connecting piece thereof.

Background

At present, the quick mechanical joint is widely applied in the field of prefabricated parts, particularly in the precast pile industry, the construction is very simple and convenient by using the quick joint, and the quick joint with good design and mechanical property can ensure that two precast piles can be quickly and firmly jointed. The existing mechanical joint structure for precast pile quick connection in the market comprises an insertion rod, an elastic nut (or a clamping piece) and a large sleeve and a small sleeve, wherein the insertion rod is inserted into the elastic nut placed in the large sleeve to prop against the concave step part of the insertion rod by virtue of the contraction of a fin of the elastic nut so as to realize connection. However, in the existing mechanical joint, a plurality of internal structural members need to be installed on site in the concrete member construction process, and the size of the elastic nut (or clamping piece) of the existing joint is limited by the specification of the tensioning screw, so that the universality and the ultimate tensile bearing capacity cannot be considered at the same time.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems and researches and designs a precast concrete member and a connecting piece thereof. The technical means adopted by the utility model are as follows:

the utility model provides a precast concrete component and connecting piece, includes inserted bar, first sleeve and a clamping piece section of thick bamboo, the clamping piece section of thick bamboo includes clamping piece section of thick bamboo main part and sets up the clamping piece in clamping piece section of thick bamboo main part, be equipped with in the clamping piece section of thick bamboo main part be used for with the first connecting portion of steel bar connection, a clamping piece section of thick bamboo can pass through screw thread and first sleeve reciprocal anchorage, and under fixed state, the clamping piece is located first sleeve, the plug of inserted bar can insert first sleeve and carry out the joint with the clamping piece.

Furthermore, more than two clamping pieces are arranged on the clamping piece cylinder main body, and the clamping pieces and the plug of the inserted bar are provided with mutually meshed one-way teeth.

Furthermore, one end, far away from the clamping piece barrel, of the first sleeve is provided with an internal thread, the inner diameter of the end is smaller than the inner diameters of other parts of the first sleeve, a connecting section is arranged between the clamping piece barrel main body and the clamping piece, and the outer diameter of the connecting section is smaller than the outer diameter of the clamping piece barrel main body and larger than the outer diameter of the clamping piece.

Further, the inserted bar includes link and plug, the link is fixed in the second sleeve, be equipped with on the second sleeve and be used for the second connecting portion of being connected with the reinforcing bar.

Furthermore, the end part of the plug of the inserted bar is provided with an inserting guide surface, the second connecting part is a through hole arranged at the bottom of the second sleeve, a step surface used for limiting the steel bar heading is formed between the second connecting part and the inner wall of the second sleeve, and the side wall of the second sleeve is provided with a first mounting opening used for mounting the steel bar heading into the second connecting part.

Furthermore, the first connecting portion are through holes formed in the bottom of the clamping piece barrel main body, a step surface used for limiting the steel bar heading is formed between the first connecting portion and the inner wall of the clamping piece barrel main body, and a second mounting opening used for mounting the steel bar heading into the first connecting portion is formed in the side wall of the clamping piece barrel main body.

One end of a main reinforcement is connected with a first sleeve and a clamping piece cylinder.

Furthermore, the other end of the main rib is connected with a second sleeve, a first mounting opening used for mounting the steel bar upset head into the second connecting part is formed in the side wall of the second sleeve, and a second mounting opening used for mounting the steel bar upset head into the first connecting part is formed in the side wall of the clamping piece cylinder main body.

Compared with the prior art, the precast concrete member and the connecting piece thereof have the following advantages:

1. the precast concrete member and the connecting piece have good integrity, particularly the clamping piece barrel is fixed in the first sleeve barrel in a threaded connection mode, the integrity is good, the inserted bar can be accurately clamped into the clamping piece, the connection is easy, and the failure rate is low;

2. the specification of the clamping piece is not limited by the general size of the tensioning part of the sleeve, and the thickness of the clamping piece can be increased, so that the tensile bearing capacity of the mechanical joint is higher than that of the mechanical joint in the prior art;

3. the first sleeve and the clamping piece barrel can be installed in advance by a manufacturer in batch processing, the production time does not need to be occupied, the efficiency of a production stage and a construction stage is improved, and the time cost is greatly saved.

Drawings

Fig. 1 is a schematic structural view of a precast concrete unit and a connection member according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a clip cartridge according to an embodiment of the present invention.

Fig. 3 is a rear view of fig. 2.

Fig. 4 is a top view of fig. 2.

Fig. 5 is a cross-sectional view C-C of fig. 2.

Fig. 6 is a cross-sectional view taken along line D-D of fig. 4.

Fig. 7 is a sectional view taken along line B-B of fig. 2.

Fig. 8 is a sectional view a-a of fig. 2.

Fig. 9 is a schematic structural diagram of a first sleeve according to an embodiment of the present invention.

Fig. 10 is a top view of fig. 9.

Fig. 11 is a bottom view of fig. 9.

Fig. 12 is a schematic structural diagram of an insert rod according to an embodiment of the present invention.

Fig. 13 is a side view of fig. 12.

Fig. 14 is a cross-sectional view E-E of fig. 12.

Fig. 15 is a schematic structural view of a second sleeve according to an embodiment of the present invention.

Fig. 16 is a sectional view F-F of fig. 15.

Fig. 17 is a sectional view taken along line G-G of fig. 16.

Fig. 18 is a schematic structural view of a precast concrete unit according to an embodiment of the present invention.

Fig. 19 is a partially enlarged view of one end of a precast concrete member according to an embodiment of the present invention.

Fig. 20 is a partially enlarged view of the other end of the precast concrete unit according to the embodiment of the present invention.

Fig. 21 is a partially enlarged view of precast concrete elements according to an embodiment of the present invention in a coupled state.

Detailed Description

As shown in fig. 1 to 17, a precast concrete component and connecting piece, including inserted bar 1, first sleeve 2 and a clamping piece section of thick bamboo 3, clamping piece section of thick bamboo 3 includes clamping piece section of thick bamboo main part 31 and sets up the clamping piece 32 on clamping piece section of thick bamboo main part 31, be equipped with on the clamping piece section of thick bamboo main part 31 and be used for the first connecting portion 33 with the steel bar connection, clamping piece section of thick bamboo 3 can pass through screw thread and first sleeve 2 reciprocal anchorage, and under fixed state, clamping piece 32 is located first sleeve 2, the plug 11 of inserted bar 1 can insert first sleeve 2 and carry out the joint with clamping piece 32.

The clamping piece barrel is characterized in that more than two clamping pieces 32 are arranged on the clamping piece barrel body 31, one-way teeth which are meshed with each other are arranged on the clamping pieces 32 and the plug of the inserted bar 1, and the one-way teeth are inverted trapezoidal sawtooth teeth. Because the perpendicularity of the pile face cannot guarantee the complete perpendicularity in an ideal state, the existing mechanical joint has the problem of being inserted incompletely or excessively when in butt joint, the embodiment adopts a connection mode of meshing a plurality of circles of unidirectional teeth, and the connection can be effectively carried out when the insertion degrees are different, so that the problem that the connection part is not clamped or loosened due to incomplete insertion or excessive insertion is avoided.

The one end of keeping away from a clamping piece section of thick bamboo 3 of first sleeve 2 is equipped with the internal thread, and as stretch-draw screw thread 21, stretch-draw screw thread 21 can be used for the stretch-draw of reinforcing bar in precast concrete component manufacturing process, and the internal diameter of this end is less than the internal diameter of other 2 parts of first sleeve, be equipped with linkage segment 34 between clamping piece section of thick bamboo main part 31 and the clamping piece 32, the external diameter of linkage segment 34 is less than the external diameter of clamping piece section of thick bamboo main part 31, is greater than the external diameter of clamping piece 32 department, forms the step face that is used for with the cooperation of first sleeve 2 location between linkage segment 34 and clamping piece section of thick bamboo main part 31, and the external diameter of preferred clamping piece section of thick bamboo main part 31 equals with the external diameter of first sleeve 2, and the external diameter that clamping piece 32 department is less than linkage segment 34 simultaneously leaves the elasticity space for clamping piece 32 on radial direction, realizes elasticity expansion and resilience to realize pegging graft, the clamping piece section of thick bamboo 3 of this embodiment is a body structure as an organic whole. Because the general 27mm of assembly screw diameter of stretch-draw usefulness between the trade, stretch-draw screw thread 21 cooperates this size setting, because the stretch-draw screw thread of this embodiment is in the work progress and need not to install other for the connection accessories again, consequently inserted bar 1 can cooperate this size to set up, need not to receive the restriction of the connection accessory of middle installation, guarantee the commonality simultaneously, the clamping piece of this embodiment need not to connect through stretch-draw screw thread simultaneously, its size does not receive the restriction of stretch-draw screw thread diameter, can increase the thickness of clamping piece and the size of one-way tooth, and then improve its ultimate tensile bearing capacity, improve joint strength. The assembly components of the first sleeve 2 and the clamping piece barrel 3 can be used for tensioning the main reinforcement of the prestressed concrete member in the production process of the precast concrete member, and the member can be connected by utilizing the assembly components after being formed, so that the aim of one piece with multiple purposes is fulfilled, and the cost is reduced to some extent.

The inserted bar 1 includes link 12 and plug 11, link 12 is fixed in second sleeve 4, and in this embodiment, link 12 is equipped with the external screw thread outward, and second sleeve 4 is equipped with the internal thread, and link 12 and second sleeve 4 pass through the thread tightening, be equipped with on the second sleeve 4 and be used for the second connecting portion 41 with the steel bar connection, inserted bar 1 is integrative. In a preferred embodiment, an insert rod connecting section 14 is arranged between the connecting end 12 and the plug, the outer diameter of the insert rod connecting section 14 is the same as that of the plug 11, a clamping plane 15 for clamping a knob insert rod can be arranged on the insert rod connecting section 14, the outer diameter of the connecting end 12 is smaller than or equal to that of the insert rod connecting section 14, preferably smaller than that of the insert rod connecting section 14, so that a step surface capable of being in butt joint with the end surface of the second sleeve 4 is formed between the connecting end 12 and the insert rod connecting section 14, and in this embodiment, the end surfaces of the first sleeve 2 and the second sleeve 4 are in tight butt joint in the plugging state, so that the connecting surfaces of the precast concrete members connected with each other are in as tight butt joint as possible, and integrity and stability between the two precast concrete members are ensured. Of course, the diameter of link also can cooperate the telescopic internal thread department internal diameter of second to set up, and the internal diameter of the internal thread department of second sleeve 4 can be equal with the internal diameter of the stretch-draw screw thread department of first sleeve, also can set up to other sizes as required, and when the internal diameter of the internal thread department of first sleeve and second sleeve is equal, the stretch-draw commonality is good.

The end of the plug 11 is provided with an insertion guide surface 13, the second connecting portion 41 is a through hole arranged at the bottom of the second sleeve 4, a step surface for limiting a steel rod upset head is formed between the second connecting portion 41 and the inner wall of the second sleeve 4, a first mounting opening 42 for mounting the steel rod upset head into the second connecting portion is formed in the side wall of the second sleeve 4, and specifically, the shape of the first mounting opening 42 can correspond to the shape of the steel rod upset head. The first connecting portion 33 is a through hole formed in the bottom of the clip barrel main body 31, a step surface for limiting a steel rod upset is formed between the first connecting portion 33 and the inner wall of the clip barrel main body 31, a second mounting opening 35 for mounting the steel rod upset into the first connecting portion 33 is formed in the side wall of the clip barrel main body 31, and specifically, the shape of the second mounting opening 35 may correspond to the shape of the steel rod upset. The arrangement of the first mounting port 42 and the second mounting port 35 avoids a process of passing through a sleeve in front of the steel bar heading in the production process, improves the production efficiency and reduces the operation difficulty of workers.

As shown in fig. 18 to 20, a precast concrete member 5 has one end of a main reinforcement to which a first sleeve 2 and a clip cylinder 3 according to the present invention are attached. In a preferred embodiment, the other end of the main bar is connected with the second sleeve 4, the side wall of the second sleeve 4 is provided with a first mounting opening 42 for mounting the steel bar upset head into the second connecting portion 41, and the side wall of the clip barrel main body 31 is provided with a second mounting opening 35 for mounting the steel bar upset head into the first connecting portion 33. The precast concrete unit described in this embodiment is a precast concrete pile.

A manufacturing method of a precast concrete unit is used for manufacturing the precast concrete unit, and comprises the following steps:

s1: the upset head at one end of the main rib is arranged into a second sleeve through a first mounting opening, and the upset head at the other end of the main rib is arranged into an assembly part of the clamping cylinder and the first sleeve through a second mounting opening;

s2: tensioning the main rib through internal threads of the first sleeve and the second sleeve, specifically, fixing the first sleeve and the second sleeve with a fixing plate and a tensioning plate of a tensioning device through threads respectively, and tensioning;

s3: and (5) carrying out concrete distribution to prepare the concrete member.

The first sleeve and the clamping piece barrel can be installed in advance by a manufacturer when being processed in batch, the production time does not need to be occupied, the assembly parts of the first sleeve and the clamping piece barrel can be directly used for tensioning, the efficiency of a production stage and a construction stage is improved, and the time cost is greatly saved.

In one embodiment, the precast concrete member is a precast concrete pile, and in the production process, a prestressed steel bar (hereinafter referred to as a PC steel bar) at one end of a single pile is headed in a heading workshop, and is respectively installed in a second sleeve and an assembly part of a clamping cylinder and a first sleeve, and specifically, the prestressed steel bar is installed through a first installation opening and a second installation opening on the side surface, and then enters the tensioning process of prestressed tendons. In the production and manufacturing process

As shown in fig. 19 to 21, a precast concrete unit construction method for connecting two or more precast concrete units includes the steps of: and installing the inserted bar into the second sleeve of one precast concrete member, aligning the inserted bar and inserting the inserted bar into the first sleeve of the other precast concrete member to realize splicing. After the production and the manufacture of the concrete prefabricated part are completed, only one accessory of the insertion rod needs to be installed, a plurality of accessories do not need to be installed in the construction process, and the construction efficiency is greatly improved.

In one embodiment, the precast concrete member is a precast concrete pile, during construction, a single pile is transported to a construction site, the pile end provided with a second sleeve is downward, pile driving is performed, when a previous pile is sunk into a soil layer and reaches a pile extension height specified by a standard specification, the lower pile is transported, one end of the second sleeve is downward, an inserted bar is screwed into the threaded end of the second sleeve in advance, the inserted bar is aligned to a through hole of a first sleeve of the previous pile, the inserted bar is pressed into a clamping piece barrel by using the self weight of a pile body, and single teeth between a plug of the inserted bar and the clamping piece are engaged by using the contraction force of the clamping piece on the upper portion of the clamping piece barrel and the engagement force of the single teeth, so that the connection purpose is achieved.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. A precast concrete member connection member characterized in that: including inserted bar, first sleeve and a clamping piece section of thick bamboo, the clamping piece section of thick bamboo includes clamping piece section of thick bamboo main part and sets up the clamping piece in clamping piece section of thick bamboo main part, be equipped with in the clamping piece section of thick bamboo main part be used for with the first connecting portion of steel bar connection, a clamping piece section of thick bamboo can pass through screw thread and first sleeve reciprocal anchorage, and under fixed state, the clamping piece is located first sleeve, the plug of inserted bar can insert first sleeve and carry out the joint with the clamping piece.

2. The precast concrete unit coupling member according to claim 1, wherein: more than two clamping pieces are arranged on the clamping piece cylinder main body, and mutually meshed one-way teeth are arranged on the clamping pieces and the plug of the inserted bar.

3. The precast concrete unit coupling member according to claim 2, wherein: the clamping piece barrel is characterized in that an internal thread is arranged at one end, far away from the clamping piece barrel, of the first sleeve, the inner diameter of the end is smaller than the inner diameters of other parts of the first sleeve, a connecting section is arranged between the clamping piece barrel body and the clamping piece, and the outer diameter of the connecting section is smaller than the outer diameter of the clamping piece barrel body and larger than the outer diameter of the clamping piece.

4. The precast concrete member connection member according to claim 3, wherein: the inserted bar comprises a connecting end and a plug, the connecting end is fixed in the second sleeve, and the second sleeve is provided with a second connecting portion used for being connected with the steel bar.

5. The precast concrete member connection member according to claim 4, wherein: the end part of the plug of the inserted bar is provided with an inserting guide surface, the second connecting part is a through hole arranged at the bottom of the second sleeve, a step surface used for limiting the steel bar heading is formed between the second connecting part and the inner wall of the second sleeve, and the side wall of the second sleeve is provided with a first mounting opening used for mounting the steel bar heading into the second connecting part.

6. The precast concrete member connection member according to any one of claims 1 to 5, wherein: the clamping piece barrel comprises a clamping piece barrel body and is characterized in that a first connecting portion is a through hole arranged at the bottom of the clamping piece barrel body, a step surface used for limiting a steel bar heading is formed between the first connecting portion and the inner wall of the clamping piece barrel body, and a second mounting opening used for mounting the steel bar heading into the first connecting portion is formed in the side wall of the clamping piece barrel body.

7. A precast concrete member characterized in that: the precast concrete member coupler according to any one of claims 1 to 5 is connected to one end of a main bar, and the first sleeve and the clamping cylinder are connected to one end of the concrete main bar.

8. The precast concrete member according to claim 7, wherein: the other end of the main rib is connected with a second sleeve as claimed in claim 4, 5 or 6, a first mounting opening for installing the steel bar upset head into the second connecting part is formed in the side wall of the second sleeve, and a second mounting opening for installing the steel bar upset head into the first connecting part is formed in the side wall of the clamping piece cylinder main body.