CN215107495U

CN215107495U - Fixing device for tubular embedded part in cast-in-place beam plate

Info

Publication number: CN215107495U
Application number: CN202121107053.5U
Authority: CN
Inventors: 刘卓; 程华敏; 焦晓辉; 许锋; 王壮
Original assignee: First Construction Co Ltd of China Construction Third Engineering Division
Current assignee: First Construction Co Ltd of China Construction Third Engineering Division
Priority date: 2021-05-23
Filing date: 2021-05-23
Publication date: 2021-12-10
Anticipated expiration: 2031-05-23

Abstract

The utility model discloses a tubular embedded part fixing device in a cast-in-place beam plate, which comprises a pull rod, a sleeve, a limiting rod, a connecting rod and a fixed rod; the lower end of the pull rod is hinged with one end of the limiting rod; the other end of the limiting rod is hinged with one end of a connecting rod, and the other end of the connecting rod is hinged with the lower end of the sleeve; the sleeve is movably arranged on the pull rod; the upper end of the pull rod extends out of the upper end of the sleeve and is connected with the fixed rod. Can carry out prepositioning through the pull rod to the perpendicular axis of tubular built-in fitting, and under the mating action of gag lever post and connecting rod, can fix the pull rod on the template of thickness less, the pull rod is difficult for inclining or askew toppling over, guarantees positioning accuracy. The fixing rod on the pull rod can limit the axial displacement of the tubular embedded part, and the fixing rod and the limiting rod are matched to clamp and fix the axial end of the tubular embedded part, so that the fixing effect is good, the fixing rod is applicable to tubular embedded parts of different sizes, the structure is simple, and the disassembly is convenient.

Description

Fixing device for tubular embedded part in cast-in-place beam plate

Technical Field

The utility model relates to a building technical field specifically indicates a tubulose built-in fitting fixing device in cast-in-place beam slab.

Background

In engineering construction, according to functional requirements, parts such as bolts, rods, steel plates and pipe fittings are often required to be pre-embedded in precast concrete and cast-in-place concrete beam plate members, the pre-embedded parts need to be pre-fixed during concrete pouring, and for rod-shaped or plate-shaped parts such as the bolts, the rods and the steel plates, the pre-fixing mode is simple, and an electric welding machine spot welding method or a simple mechanical binding method is usually adopted. However, for the tubular embedded part, because the cross section of the tubular embedded part is large and has certain requirements on installation accuracy, the traditional pre-fixing method has the defects of poor fixing effect, low accuracy and the like, and cannot be suitable for fixing the tubular embedded part.

Various solutions have been proposed by many experts and scholars, but in practice there are many limitations and disadvantages all the time, taking the chinese utility model patent with publication number CN203430034U as an example, it discloses a cast-in-place slab embedded casing positioning and fixing tool, which limits the radial displacement of the embedded casing through a fixing frame to realize the fixation of the embedded casing, and realizes the pre-positioning by the cooperation of a screw and a template. In practice, however, the range of use is greatly limited, such as: 1. the fixing frame needs to be matched with embedded sleeves with similar shapes, and for different embedded sleeves, fixing frames with corresponding shapes need to be designed; 2. the screw rod for positioning is only inserted in the hole of the template, if the template is thin and the lower end of the embedded sleeve is not in contact with the template, the screw rod for positioning is easy to incline and incline, the fixing and positioning effects are poor, and if the screw rod is in threaded connection with the template, the screw rod is not favorable for later-stage screw rod dismantling.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the problem that the tubular embedded part in the existing cast-in-place beam plate is difficult to fix and position, and provides a fixing device for the tubular embedded part in the cast-in-place beam plate, which comprises a pull rod, a sleeve, a limiting rod, a connecting rod and a fixed rod; the lower end of the pull rod is hinged with one end of the limiting rod; the other end of the limiting rod is hinged with one end of the connecting rod, and the other end of the connecting rod is hinged with the lower end of the sleeve; the sleeve is movably arranged on the pull rod; the upper end of the pull rod extends out of the upper end of the sleeve and is connected with the fixed rod.

Furthermore, the fixed rod is a cross rod, a first through hole for the pull rod to pass through is formed in the middle of the fixed rod, and a first thread section is formed in the pull rod; the inner wall of the first through hole is provided with an internal thread matched with the first thread section, or the upper end of the fixed rod is provided with a first nut matched with the first thread section of the pull rod. The fixed rod is in threaded connection with the pull rod and can be suitable for axial limiting of embedded parts with different heights.

Furthermore, the tail end of the fixed rod is provided with a second thread section and a second screw cap matched with the second thread section. Through set up screw-thread fit's second nut on the dead lever, can restrict the radial displacement of built-in fitting, and applicable in the tubulose built-in fitting of different diameters.

Further, the fixing device also comprises an inner supporting piece arranged inside the tubular embedded part. The inner part of the tubular embedded part is reinforced through the inner supporting part, and the tubular embedded part is prevented from being extruded and deformed by cast-in-place concrete.

Furthermore, the fixing device also comprises a water stop steel plate arranged outside the tubular embedded part.

Furthermore, a plurality of limiting rods and a plurality of connecting rods are respectively arranged; the limiting rods are uniformly arranged along the circumferential direction of the pull rod.

Furthermore, the sum of the lengths of the limiting rod, the pull rod and the sleeve is smaller than the length of the pull rod.

Further, the fixing device also comprises a template arranged at the lower end of the tubular embedded part; and the template is provided with a second through hole communicated with the inside of the tubular embedded part.

The utility model has the advantages that: can carry out prepositioning through the pull rod to the perpendicular axis of tubular built-in fitting, and under the mating action of gag lever post and connecting rod, can fix the pull rod on the template of thickness less, the pull rod is difficult for inclining or askew toppling over, guarantees positioning accuracy. The fixing rod on the pull rod can limit the axial displacement of the tubular embedded part, and the fixing rod and the limiting rod are matched to clamp and fix the axial end of the tubular embedded part, so that the fixing effect is good, the fixing rod is applicable to tubular embedded parts of different sizes, the structure is simple, and the disassembly is convenient.

Drawings

Fig. 1 is the perspective structure schematic diagram of the tubular embedded part fixing device in the cast-in-place beam slab of the utility model.

Fig. 2 is a schematic front view of the structure of fig. 1.

Fig. 3 is an enlarged perspective view of the fixing rod and the pull rod in fig. 1.

Fig. 4 is a schematic view of the sleeve of fig. 2 moved downwardly to its lowermost end with respect to the drawbar.

Fig. 5 is a schematic view of the sleeve of fig. 2 moved upward to the uppermost end with respect to the drawbar.

Fig. 6 is a schematic view of the sectional structure of the tubular embedded part on the template.

Fig. 7 is a schematic structural view of the fixing device of the present invention fixing the tubular embedded part in fig. 6.

Fig. 8 is a schematic top view of the inner support member of fig. 7.

In the drawings, 1-pull rod; 2-a sleeve; 3-a limiting rod; 4-a connecting rod; 5-fixing the rod; 6-a first via; 7-a first thread segment; 8-a first nut; 9-a second thread segment; 10-a second nut; 11-a second via; 12-a template; 13-an inner support; 14-water stop steel plate; 15-tubular embedded part.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

As shown in fig. 1 to 8, the fixing device for the tubular embedded part in the cast-in-place beam plate comprises a pull rod 1, a sleeve 2, a limiting rod 3, a connecting rod 4 and a fixing rod 5; the lower end of the pull rod 1 is hinged with one end of the limiting rod 3; the other end of the limiting rod 3 is hinged with one end of a connecting rod 4, and the other end of the connecting rod 4 is hinged with the lower end of the sleeve 2; the sleeve 2 is movably arranged on the pull rod 1; the upper end of the pull rod 1 extends out of the upper end of the sleeve 2 and is connected with a fixed rod 5.

Specifically, as shown in fig. 3, the fixing rod 5 is a cross rod horizontally arranged, a first through hole 6 for the pull rod 1 to pass through is formed in the middle of the fixing rod, and a first thread section 7 is formed on the pull rod 1; the upper end of the fixed rod 5 is provided with a first nut 8 which is matched with the first thread section 7 of the pull rod 1. Of course, it is also possible to provide an internal thread on the inner wall of the first through hole 6, which is engaged with the first thread section 7, so as to directly rotate the fixing rod 5 on the drawbar 1. The end of the fixing rod 5 is provided with a second thread section 9 and a second nut 10 matched with the second thread section. When the special positioning device is used, as shown in fig. 7, the fixing rod 5 is abutted against the upper end of the tubular embedded part 15, the second screw cap 10 is positioned on the inner side of the tubular embedded part 15, and the second screw cap 10 is screwed down to abut against the inner wall of the tubular embedded part 15, so that the axial displacement and the radial position of the tubular embedded part 15 can be limited, and the accurate positioning is performed on the premise that the pull rod 1 is positioned on the central axis of the tubular embedded part 15.

Specifically, as shown in fig. 6, the fixing device further includes a template 12 disposed at a lower end of the tubular embedded part 15; the template 12 is provided with a second through hole 11 communicated with the inside of the tubular embedded part 15. The position of the second through hole 11 is actually the central axis position of the tubular embedded part 15, and the second through hole 11 is formed by drawing and drilling on the template 12 according to the position of the tubular embedded part 15 to be arranged.

The two limiting rods 3 and the two connecting rods 4 are respectively arranged in the embodiment, the two limiting rods 3 are symmetrically arranged along the circumferential direction of the pull rod 1, the two connecting rods 4 are symmetrically arranged along the circumferential direction of the pull rod 1, and the two connecting rods 4 are respectively arranged above the two limiting rods 3. In practice, there may be more stop rods 3 and connecting rods 4, respectively. The sum of the lengths of the single limiting rod 3, the single pull rod 1 and the sleeve 2 is less than the length of the pull rod 1.

As shown in fig. 2 and 4, when the pull rod 1 is pulled upward, the pull rod 1 moves upward relative to the sleeve 2 (or the sleeve 2 moves downward relative to the pull rod 1), the stopper rod 3 and the connecting rod 4 are close to each other and are in a state close to the horizontal state, which is the use state of the fixing device, and as shown in fig. 7, the stopper rod 3 and the connecting rod 4 which are in the horizontal state and close to each other are located below the formwork 12 and abut against the lower end of the formwork 12.

As shown in fig. 5, the pull rod 1 is pushed downwards, the pull rod 1 moves downwards relative to the sleeve 2, and the limiting rod 3 and the connecting rod 4 are in a nearly vertical state so as to pass through the second through hole 11 on the template 12.

As shown in fig. 7 and 8, the fixing device further includes an inner support member 13 disposed inside the tubular embedded member 15. The inner support 13 may comprise concentric outer and inner rings and a reinforcing rod disposed between the outer and inner rings. The inner ring is sleeved on the outer side of the sleeve 2, and the outer end face of the outer ring is abutted against the inner wall of the tubular embedded part 15.

As shown in fig. 7, a water stop steel plate 14 is also provided outside the tubular embedded part 15.

The construction steps of the tubular embedded part 15 in the cast-in-place beam plate by using the fixing device of the embodiment are as follows:

the water stop steel plate 14 is welded on the outer part of the tubular embedded part 15. And (3) installing a template 12, and drilling holes at the positions, to be provided with the tubular embedded parts 15, of the template 12 to form second through holes 11, so that the central axes of the second through holes 11 are overlapped with the central axes of the tubular embedded parts 15 to be provided. The sleeve 2 is pulled upwards to enable the limiting rod 3 and the connecting rod 4 to be in the state shown in figure 5, the limiting rod 3 and the connecting rod 4 penetrate into the lower portion of the formwork 12 from the second through hole 11, the sleeve 2 is kept still, the pull rod 1 is pulled upwards to enable the limiting rod 3 and the connecting rod 4 to be unfolded to be in the state shown in figure 7, and the limiting rod 3 and the connecting rod 4 are abutted against the lower end of the formwork 12. Then, the inner supporting piece 13 is placed into the tubular embedded part 15, specifically, the inner ring of the inner supporting piece 13 is sleeved on the sleeve 2, and the outer ring of the inner supporting piece 13 is tightly propped against the inner wall of the tubular embedded part 15. And then the fixing rod 5 is installed, the first through hole 6 of the fixing rod 5 penetrates through the pull rod 1, the lower end of the fixing rod 5 is tightly abutted to the upper end of the tubular embedded part 15, and then the first nut 8 and the second nut 10 are screwed, so that the tubular embedded part 15 is fixed and is not prone to inclination or tilting under the action of the fixing rod 5, the limiting rod 3 and the connecting rod 4. The pull rod 1 or the sleeve 2 realizes the central axis positioning of the tubular embedded part 15 and ensures the installation precision of the tubular embedded part 15.

After the fixing device is fixedly fastened with the template 12 and the tubular embedded part 15, the second through hole 11 is plugged by foam rubber, then concrete is poured, and after the strength of the poured concrete reaches more than 2.5MPa, the fixing device is reversely dismantled.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that a person skilled in the art should also recognize that several modifications and decorations can be made without departing from the principle of the present invention, and the protection scope of the present invention is also covered.

Claims

1. The utility model provides a cast-in-place beam slab tubular built-in fitting fixing device which characterized in that: comprises a pull rod, a sleeve, a limiting rod, a connecting rod and a fixed rod; the lower end of the pull rod is hinged with one end of the limiting rod; the other end of the limiting rod is hinged with one end of the connecting rod, and the other end of the connecting rod is hinged with the lower end of the sleeve; the sleeve is movably arranged on the pull rod; the upper end of the pull rod extends out of the upper end of the sleeve and is connected with the fixed rod.

2. The cast-in-place beam plate inner tubular embedded part fixing device of claim 1, wherein: the fixed rod is a cross rod, a first through hole for the pull rod to pass through is formed in the middle of the fixed rod, and a first thread section is formed in the pull rod; the inner wall of the first through hole is provided with an internal thread matched with the first thread section, or the upper end of the fixed rod is provided with a first nut matched with the first thread section of the pull rod.

3. The cast-in-place beam plate inner tubular embedded part fixing device of claim 2, wherein: the tail end of the fixed rod is provided with a second thread section and a second nut matched with the second thread section.

4. The cast-in-place beam plate inner tubular embedded part fixing device of claim 1, wherein: the fixing device further comprises an inner supporting piece arranged inside the tubular embedded part.

5. The cast-in-place beam plate inner tubular embedded part fixing device of claim 1, wherein: the fixing device further comprises a water stop steel plate arranged outside the tubular embedded part.

6. The cast-in-place beam plate inner tubular embedded part fixing device of claim 1, wherein: the limiting rods and the connecting rods are respectively provided with a plurality of limiting rods; the limiting rods are uniformly arranged along the circumferential direction of the pull rod.

7. The cast-in-place beam plate inner tubular embedded part fixing device of claim 1, wherein: the sum of the lengths of the limiting rod, the pull rod and the sleeve is smaller than the length of the pull rod.

8. The cast-in-place beam plate inner tubular embedded part fixing device of claim 1, wherein: the fixing device also comprises a template arranged at the lower end of the tubular embedded part; and the template is provided with a second through hole communicated with the inside of the tubular embedded part.