CN218195869U - Preformed hole template of large-diameter pipeline of PC well chamber - Google Patents

Abstract

The utility model belongs to the technical field of municipal road engineering, and relates to a preformed hole template of a large-diameter pipeline of a PC well chamber, which comprises a support ring frame and a limiting rod and/or a telescopic rod clamped on the outer wall of the support ring frame; the limiting rod axial direction, the telescopic rod axial direction and the supporting ring frame axial direction are consistent, the limiting rods and the telescopic rods are multiple, a circle is sequentially arranged on the multiple limiting rods or the multiple telescopic rods along the outer ring wall of the supporting ring frame, and a circle is arranged on the outer ring wall of the supporting ring frame at intervals by the multiple limiting rods and the multiple telescopic rods according to the shape of the supporting ring frame. The utility model provides a preformed hole template of big pipe diameter pipeline of PC well room improves the effective rate of utilization of material, uses in a flexible way reduce cost.

Description

Reserved hole template for large-diameter pipelines in PC wells

technical field

The utility model belongs to the technical field of municipal road engineering, and relates to a reserved hole formwork for large-diameter pipelines in PC wells.

Background technique

Municipal road engineering is a project that integrates transportation, drainage, heating, heating, communication, gas and power supply. As an important urban infrastructure, it has been constructed in great strides. In order to facilitate installation and maintenance, it is set in the construction of road pipe network Lots of inspection wells.

At present, due to the high construction quality, convenient installation, and low-carbon environmental protection of PC wells, which can better ensure the safety of construction and the progress of the project, more and more companies are paying attention to them, and they are constantly promoting the use of PC wells in application in practical engineering. Prefabricated molds are often used in the production of PC wells, especially for the production of reserved holes for large-diameter pipelines in PC wells. The diameter is specially made, but it is the influence of these variables that the reserved hole template cannot be turned over in the production process of different PC wells. Different PC wells need to design a set of corresponding reserved hole templates, which wastes materials and leads to reserved holes. The effective utilization rate of the formwork material is low; at the same time, the area of the traditional formwork for the reserved holes of the large-diameter pipeline is relatively large, and the structure is special, which will virtually increase the production cost of the PC well chamber.

Utility model content

Aiming at the technical problems of low utilization rate and high cost of existing PC well reserved hole templates, the utility model provides a reserved hole template for large-diameter pipelines in PC well chambers, which improves the effective utilization rate of materials and is flexible to use. cut costs.

In order to achieve the above object, the technical scheme adopted by the present invention is:

A template for reserved holes for large-diameter pipelines in PC wells, including a support ring frame and a limit rod and/or a telescopic rod stuck on the outer wall of the support ring frame; the axial direction of the limit rod, the axial direction of the telescopic rod, The axial direction of the support ring frame is consistent, and there are multiple limit rods and telescopic rods, and multiple limit rods or multiple telescopic rods are arranged in a circle along the outer ring wall of the support ring frame; the multiple limit rods The rod and the plurality of telescopic rods are arranged in a circle at intervals on the outer ring wall of the support ring frame according to the shape of the support ring frame.

Further, the limiting rod includes a rectangular tube and outer-diameter tube ends respectively placed at both ends of the rectangular tube; the outer-diameter tube ends are respectively engaged with the rectangular tube and the support ring.

Further, the telescopic rod includes an outer diameter tube, an inner diameter tube, an extension sleeve, an extension rod, an outer diameter tube end and an inner diameter tube end; one end of the inner diameter tube extends into the outer diameter tube, and the other end of the inner diameter tube Extend into the extension sleeve and connect with the extension rod extending into the extension sleeve; the outer diameter tube, inner diameter tube, extension sleeve and extension rod are arranged coaxially; the end of the outer diameter tube is placed away from the outer diameter tube One end of the inner diameter tube, the end of the outer diameter tube is clamped with the outer diameter tube and the support ring frame respectively; Connect with the support ring frame.

Further, the end of the outer diameter tube includes an outer diameter block and a ring block A that are movably connected in sequence from top to bottom; the rectangular tube or the outer diameter tube is snapped into the outer diameter block; the ring block A snaps onto the support ring.

Further, the end of the inner diameter pipe includes an inner diameter block and a ring block B that are movably connected in sequence from top to bottom; the extension rod is snapped into the inner diameter block; the ring block B is clipped on the supporting ring frame .

Further, the ring clamp block A and the ring clamp block B have the same structure.

Further, the support ring frame includes an inner ring and an outer ring placed in parallel and coaxially; the line between the axis of the inner ring and the axis of the outer ring is parallel to the axial direction of the limit rod; the ring block B and the ring block A are correspondingly locked on the inner ring or the outer ring respectively.

Further, the reserved hole template of the large-diameter pipeline in the PC well chamber also includes a compensation block pasted on the telescopic rod; the compensation block is respectively pasted on the upper end face of the outer diameter block and the upper end face of the inner diameter block .

Further, the reserved hole template of the large-diameter pipeline in the PC well chamber also includes a surface layer; the surface layer is wrapped around the outside of the circle surrounded by the limit rod and/or the telescopic rod.

Further, the surface layer is a ring structure wound by a rubber sheet that is the same as the structure of the outer surface of the supporting ring frame.

The beneficial effects of the utility model are:

1. In the utility model, the reserved hole template is formed by using the support ring frame and the limit rod and/or telescopic rod stuck on the outer wall of the support ring frame. The axial length of the limit rod cannot be adjusted, and the axial length of the telescopic rod can be adjusted. , so that according to the actual shape of the reserved hole of the PC well, the limit rod and/or telescopic rod are selected and the size is adjusted to form a deformable template, which can be adaptively changed with the change of the shape, size, wall thickness and pipe diameter of the PC well , improve the effective utilization rate of formwork materials and reduce production costs.

2. The formwork of this utility model, when installing, when there is a large deformation point in the shape of the PC well, the telescopic rod is used as the formwork, the deformation of the PC well is gentle, and the template is formed by the limit rod, which is selected according to the shape of the PC well , flexible to use.

3. In the utility model, the clamping connection between the limit rod and/or telescopic rod and the supporting ring frame is realized through the ring clamping block A and the ring clamping block B, which is convenient in operation and simple in structure.

4. The formwork structure provided by the utility model is convenient for assembly and can be reused. It fully implements the concepts of low carbon, environmental protection and high efficiency, and promotes the development of prefabricated technology in municipal road engineering.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the reserved hole formwork of PC well (square well) large-diameter pipeline of the utility model embodiment 1;

Fig. 2 is the overall structure schematic diagram of the PC well (circular well) large-diameter pipeline reserved hole formwork of the utility model embodiment 2;

Figure 3 is a schematic diagram of the installation of the limit rod;

Figure 4 is a schematic diagram of the installation of the telescopic rod;

Fig. 5 is a structural schematic diagram of a limit rod;

Fig. 6 is a schematic diagram of the structure of the telescopic rod;

Fig. 7 is a schematic diagram of the structure of the end of the outer diameter pipe;

Fig. 8 is a schematic diagram of the structure of the end of the inner diameter pipe;

Fig. 9 is a schematic diagram of the expansion of the surface layer of the reserved hole template of the circular PC well;

Fig. 10 is the expanded schematic diagram of the surface layer of the reserved hole template of the square PC well;

in:

1-inner ring; 2-outer ring; 3-rectangular tube; 4-outer diameter tube; 5-inner diameter tube; 6-extension sleeve; 7-extension rod; 8-outer diameter tube end; 81-outer diameter clamp Block; 82-ring block A; 9-inner diameter pipe end; 91-inner diameter block; 92-ring block B; 10-rubber sheet; 11-supporting ring frame; 12-limiting rod; ; 14-compensation block; 15-surface layer; 16-gap.

detailed description

Now in conjunction with accompanying drawing and embodiment the utility model is described in detail.

Example 1

Referring to Fig. 1 , a reserved hole formwork for a large-diameter pipeline in a PC well chamber includes a support ring frame 11 and a stop rod 12 and/or a telescopic rod 13 stuck on the outer wall of the support ring frame 11; the stop rod 12 axis The axial direction of the expansion rod 13 and the axial direction of the support ring frame 11 are consistent. The limit rods 12 and the expansion rods 13 are multiple. The walls are arranged in a circle in turn; a plurality of limit rods 12 and a plurality of telescopic rods 13 are arranged in a circle on the outer ring wall of the support ring frame 11 according to the shape of the support ring frame 11 .

In this embodiment, the PC well is square, therefore, the inner ring 1 and the outer ring 2 are circular with the same structure, and the reserved hole template formed at this time is cylindrical.

In this embodiment, the support ring frame 11 includes an inner ring 1 and an outer ring 2 placed in parallel and coaxially;

The material of the supporting ring frame 11 is HPB400 smooth round steel bar, which is made by a 3D wire forming machine. Each reserved hole formwork has two supporting ring frames 11, the supporting ring frame 11 close to the inner mold is the inner ring 1, and the supporting ring frame 11 close to the outer mold is the outer ring 2; the inner ring 1 and the outer ring 2 need to Each element of the well and the reserved hole is made separately; the supporting ring frame 11 mainly serves as the stressed keel of the reserved hole formwork, resisting the deformation of the reserved hole formwork caused by the pressure of the concrete slurry, and at the same time controlling the expansion and contraction of each telescopic rod 13 amount, so that each telescopic rod 13 is ordered to form the appearance shape of the reserved hole template.

Although the circular reserved hole is a curved surface, the outer wall of the formwork is gently deformed, and two ways can be used to form the reserved hole formwork. In the first type, the spacer bar 12 and the support ring frame 11 are used alone to form the template for the reserved hole. In the second type, the spacer bar 12, the telescopic bar 13 and the support ring frame 11 can also be used to form the template for the reserved hole. In this embodiment, the second template is used to form reserved holes.

Referring to FIG. 5 , the limit rod 12 includes a rectangular tube 3 and outer diameter tube ends 8 respectively placed at both ends of the rectangular tube 3 ; the outer diameter tube ends 8 are clamped with the rectangular tube 3 and the supporting ring frame 11 respectively.

The limit rod 12 is a non-stretch rod, located at the symmetrical end of the support ring frame 11, used to initially connect the inner ring 1 and the outer ring 2, and at the same time control the wall thickness of the reserved hole template, the axial direction of the limit rod 12 is along the direction of the pipeline To be consistent, the line between the axis of the inner ring 1 and the axis of the outer ring 2 is parallel to the axis of the rectangular tube 3 . The cross section of the rectangular pipe 3 is rectangular, and the material is steel.

Referring to Fig. 6, the telescopic rod 13 includes an outer diameter tube 4, an inner diameter tube 5, an extension sleeve 6, an extension rod 7, an outer diameter tube end 8 and an inner diameter tube end 9; one end of the inner diameter tube 5 extends into the outer diameter tube 4 , the other end of the inner diameter pipe 5 extends into the extension sleeve 6 and is connected with the extension rod 7 extending into the extension sleeve 6; the outer diameter pipe 4, the inner diameter pipe 5, the extension sleeve 6, and the extension rod 7 are arranged coaxially; the outer diameter The pipe end 8 is placed on the end of the outer diameter pipe 4 away from the inner diameter pipe 5, and the outer diameter pipe end 8 is clamped with the outer diameter pipe 4 and the support ring frame 11 respectively; the inner diameter pipe end 9 is placed on the extension rod 7 away from the inner diameter pipe 5, the inner diameter pipe end 9 is clamped with the extension rod 7 and the support ring frame 11 respectively.

The telescopic rod 13 is a springless telescopic rod, which is arranged in an orderly manner on the support ring frame 11, and the axial direction of the telescopic rod 13 is consistent with the direction of the pipeline. The telescopic rod 13 has a telescopic range of 90 mm to 150 mm and is used as a template for reserved holes ribs.

The section and material of the outer diameter tube 4 are all the same as the rectangular tube 3 , the outer diameter of the inner diameter tube 5 matches the inner diameter of the outer diameter tube 4 , and the inner diameter tube 5 extends into the outer diameter tube 4 .

Referring to Fig. 7, the outer diameter pipe end 8 includes an outer diameter block 81 and a ring block A82 which are movably connected from top to bottom; the rectangular pipe 3 or the outer diameter pipe 4 is snapped into the outer diameter block 81; the ring block A82 is stuck on the support ring frame 11.

Referring to Fig. 8, the inner diameter pipe end 9 includes an inner diameter block 91 and a ring block B92 which are movably connected from top to bottom; the extension rod 7 is inserted into the inner diameter block 91; the ring block B92 is stuck on the supporting ring frame 11 .

In this embodiment, there are two types of ends, which are the outer diameter pipe end 8 and the inner diameter pipe end 9; the materials are all plastic, and the outer diameter clamping block 81 is used for clamping the rectangular pipe 3 or the outer diameter pipe 4 The inner diameter clamping block 91 is used for clamping the extension rod 7, and the extension rod 7 can be inserted into the inner diameter clamping block 91 to realize the clamping connection with the telescopic rod 13. The ring clamping block B92 and the ring clamping block A82 are correspondingly clamped on the inner ring 1 or the outer ring 2 respectively; the lower structure can rotate 360° within the bottom plane of the upper structure.

The ring clamping block A82 is flexibly connected to the outer diameter clamping block 81 and can rotate 360° within the bottom surface of the outer diameter clamping block 81 .

The ring clamping block B92 is flexibly connected with the inner diameter clamping block 91 , and can rotate 360° within the bottom surface of the inner diameter clamping block 91 .

The ring clamp block A82 and the ring clamp block B92 have the same structure, they are all square bodies, and one of them has a groove with a U-shaped opening, the opening is downward, and it is stuck on the inner ring 1 or the outer ring 2, which is convenient for connection.

The reserved hole template of the large-diameter pipeline in the PC well chamber also includes a compensation block 14 pasted on the telescopic rod 13; The compensation block 14 is a rectangular elastic rubber block, and the cross-sectional size of the compensation block 14 is equal to the cross-section size of the outer diameter pipe 4; the compensation block 14 can be compressed and deformed, and is used to fill the excessive gap between the telescopic rod 13 and the template; the compensation block ⅣThere are various lengths——5mm, 10mm, 15mm, 20mm, 25mm. Choose the appropriate length compensation block 14 according to the size of the hole; After installation, the compensation block 14 will undergo compression deformation and section deflection, which can effectively compensate the gap between the telescopic rod 13 and the curved surface template of the PC well, and support the surface layer 15 at the gap.

The reserved hole formwork of the large-diameter pipeline in the PC well chamber also includes a surface layer 15; the surface layer 15 is wrapped in the outside of the circle surrounded by the limit rod 12 and/or the expansion rod 13; the surface layer 15 is surrounded by the rubber sheet 10 Form the same ring structure as the outer surface structure of the support ring frame 11. There is a slit 16 at the joint of the surface layer 15; the surface layer 15 is used as a board surface for a template with holes reserved.

Referring to FIG. 9 , in this embodiment, since the inner ring 1 and the outer ring 2 are circular, the surface layer 15 is unfolded into a rectangle.

Example 2

Referring to Figures 2 to 4, the difference from Example 1 is that the PC well chamber is a circular well, and the inner ring 1 and the outer ring 2 are three-dimensional special shapes with similar structures but different ones.

In this embodiment, the outer wall of the template formed by the reserved holes has a variable shape. In this case, two methods can also be adopted to form the template with reserved holes. In the first type, only the telescopic rods 13 and the support ring frame 11 are used to form the reserved hole formwork, and a plurality of telescopic rods 13 are arranged in a circle on the outer ring wall of the support ring frame 11, and according to the three-dimensional special-shaped structure of the support ring frame 11 to adjust the length of the telescopic rod 13; secondly, the stopper rod 12, the telescopic rod 13 and the support ring frame 11 can also be used to form a reserved hole template.

In this embodiment, the second template is used to form reserved holes. When there is a large deformation in the shape, the expansion rod 13 is used as the template, and the deformation of the PC well is relatively gentle, and the limit rod 12 is used to form the template.

In this embodiment, the structure of the limit rod 12 and the telescopic rod 13 is the same as that of Embodiment 1, the outer diameter pipe end 8 and the inner diameter pipe end 9 are also the same as in Embodiment 1, and the compensating block 14 is also the same as in Embodiment 1.

Referring to Fig. 10, in this embodiment, both the inner ring 1 and the outer ring 2 are three-dimensional special-shaped rings, and the surface layer 15 is unfolded into a curved shape.

The reserved hole template provided by the utility model includes the following steps when forming the template.

Step 1. Template installation simulation.

Simulate the installation process of the reserved hole formwork, take the pipeline axis as the origin, establish a rectangular coordinate system in a plane perpendicular to the axis, and number each telescopic rod 13; since the reserved hole formwork is symmetrical along the X-axis and Y-axis, it only needs to Number the telescopic rods 13 in a single quadrant of the reserved hole template, and arrange the rest symmetrically; secondly, the installation simulation can pre-discover the size of the gap between each telescopic rod 13 and the PC well template, and provide the telescopic rods that need to place compensation blocks 14 13 make notes (comprising the serial number of telescopic rod 13 and the specification of compensating block 14); Simultaneously, the telescopic length of each telescopic rod 13 can be known in advance through installation simulation, and the telescopic rod 13 that needs to be extended is made a note; Finally, respectively The three-dimensional data of the support ring frame 11 and the data of the unfolded surface of the surface layer 15 are exported for the subsequent manufacture of the support ring frame 11 and the rubber sheet 10, and the simulation is completed by existing software.

Step two, component customization.

First, for the customization of the support ring frame 11, import the exported data of the support ring frame 11 into the 3D wire forming machine to make the HPB400 smooth round steel bar into the support ring frame 11, and place it on the uppermost, lowermost and leftmost ends of the support ring frame 11 , and make a marking line at the far right end.

Next, for the production of the rubber sheet 10, the rubber sheet 10 is cut according to the data derived from the simulation software.

Again, for the customization of the limit rod 12, the rectangular tube 3 of the corresponding length is customized according to the wall thickness of the PC well product, and the corresponding end is installed, and the limit rod 12 of the deformable template with the reserved hole of the PC well with the same wall thickness can also be selected. .

Finally, prepare the telescopic rods 13 in sequence according to the numbers, extend the telescopic rods 13 that need to be extended according to the remarks of the simulation results, and paste the corresponding compensation blocks 14 at the same time.

Step 3: Assemble the reserved hole template.

Firstly, the two ends of the limiting rod 12 are respectively fixed to the uppermost end and the lowermost end of the inner ring 1 and the outer ring 2 of the supporting ring frame 11 .

Next, install the telescopic rods 13 sequentially according to the numbers, and the two ends of the telescopic rods 13 are sequentially fixed on the inner ring 1 and the outer ring 2 of the supporting ring frame 11, and the axial direction of the telescopic rods 13 is consistent with the pipeline axial direction.

Finally, the rubber sheet 10 is laid on the surface of the template, and the seams of the surface layer 15 are bonded with glue. So far, the reserved hole template has been assembled.

Step 4, the installation of the reserved hole template.

After the installation of the inner mold of the PC well is completed, the reserved hole template is placed in the designated position and the film coating agent is applied, and the outer mold can be installed after the steel bars are bound.

Step five, the removal of the reserved hole formwork.

After the PC well product reaches the mold removal conditions, first remove the outer mold and inner mold in sequence, then remove the reserved hole formwork, and directly pull out the reserved hole formwork from the reserved hole as a whole.

Step 6. Circulation of reserved hole templates. According to the production arrangement of PC wells, it is determined whether the reserved hole templates need to be dismantled.

Firstly, the surface layer V is separated from the reserved hole template, and the rubber surface layer 15 is cleaned with an organic solvent such as alcohol to keep the surface layer 15 clean, and then the surface layer 15 is folded and stored properly for easy or recycling.

Secondly, the telescopic rod 13 and the limit rod 12 are disassembled sequentially, and the compensating block 14 is separated from the rod section, properly placed and stored for the next use.

Finally, the support ring frame 11 is coated with antirust agent, placed and stored, and the joints of the support ring frame 11 can also be disconnected, and the support ring frame 11 can be straightened for recycling.

To sum up, the utility model is simple in structure, strong in operability, and easy to popularize. It is suitable for the production of reserved holes for various large-diameter pipelines in various PC wells, so that the templates for the reserved holes in PC wells can be recycled. , reduce the energy consumption of PC well products, and practice the low-carbon and environmental protection concept of prefabricated products. This device will greatly promote the further reduction of energy consumption of prefabricated technology in municipal road engineering.

Claims (10)

1. A preformed hole template of a large-diameter pipeline of a PC well chamber is characterized by comprising a support ring frame (11) and a limiting rod (12) and/or a telescopic rod (13) clamped on the outer wall of the support ring frame (11); the axial direction of the limiting rods (12), the axial direction of the telescopic rods (13) and the axial direction of the support ring frame (11) are consistent, the number of the limiting rods (12) and the number of the telescopic rods (13) are multiple, and a plurality of limiting rods (12) or a plurality of telescopic rods (13) are sequentially arranged for one circle along the outer ring wall of the support ring frame (11); the limiting rods (12) and the telescopic rods (13) are arranged on the outer ring wall of the supporting ring frame (11) at intervals in a circle according to the shape of the supporting ring frame (11).

2. The preformed hole template of the PC well chamber large-diameter pipeline according to claim 1, wherein the limiting rod (12) comprises a rectangular pipe (3) and outer diameter pipe end heads (8) respectively arranged at two ends of the rectangular pipe (3); the end heads (8) of the outer diameter pipes are respectively clamped with the rectangular pipes (3) and the supporting ring frame (11).

3. The preformed hole template of the PC well chamber large-diameter pipeline is characterized in that the telescopic rod (13) comprises an outer diameter pipe (4), an inner diameter pipe (5), an extension sleeve (6), an extension rod (7), an outer diameter pipe end (8) and an inner diameter pipe end (9); one end of the inner diameter pipe (5) extends into the outer diameter pipe (4), and the other end of the inner diameter pipe (5) extends into the extension sleeve (6) and is connected with an extension rod (7) extending into the extension sleeve (6); the outer diameter pipe (4), the inner diameter pipe (5), the extension sleeve (6) and the extension rod (7) are coaxially arranged; the outer diameter pipe end (8) is arranged at one end of the outer diameter pipe (4) far away from the inner diameter pipe (5), and the outer diameter pipe end (8) is clamped with the outer diameter pipe (4) and the support ring frame (11) respectively; the inner diameter pipe end socket (9) is arranged at one end of the extension rod (7) far away from the inner diameter pipe (5), and the inner diameter pipe end socket (9) is respectively connected with the extension rod (7) and the support ring frame (11) in a clamped mode.

4. The preformed hole template of the PC well chamber large-diameter pipeline according to claim 3, wherein the outer diameter pipe end (8) comprises an outer diameter clamping block (81) and a ring clamping block A (82) which are movably connected from top to bottom; the rectangular pipe (3) or the outer diameter pipe (4) is clamped in the outer diameter clamping block (81); the ring fixture block A (82) is clamped on the support ring frame (11).

5. The preformed hole template of the PC well chamber large-diameter pipeline according to claim 4, wherein the inner diameter pipe end (9) comprises an inner diameter clamping block (91) and a ring clamping block B (92) which are movably connected from top to bottom; the extension rod (7) is clamped in the inner diameter fixture block (91); the ring clamping block B (92) is clamped on the support ring frame (11).

6. The preformed hole template of the PC well chamber large-caliber pipeline as claimed in claim 5, wherein the ring fixture block A (82) and the ring fixture block B (92) are identical in structure.

7. The template for preparing holes of large-caliber pipes in a PC well chamber according to claim 6, wherein the support ring frame (11) comprises an inner ring (1) and an outer ring (2) which are arranged in parallel and coaxially; a connecting line between the axle center of the inner ring (1) and the axle center of the outer ring (2) is axially parallel to the limiting rod (12), and the ring clamping block B (92) and the ring clamping block A (82) are correspondingly clamped on the inner ring (1) or the outer ring (2) respectively.

8. The preformed hole template of the PC well chamber large-diameter pipeline is characterized by further comprising a compensation block (14) adhered to the telescopic rod (13); the compensation block (14) is respectively stuck on the upper end surface of the outer diameter fixture block (81) and the upper end surface of the inner diameter fixture block (91).

9. The preformed hole template of the PC well chamber large-diameter pipeline as claimed in any one of claims 1-8, wherein the preformed hole template of the PC well chamber large-diameter pipeline further comprises a surface layer (15); the surface layer (15) is wrapped outside a ring enclosed by the limiting rod (12) and/or the telescopic rod (13).

10. The preformed hole template of the PC well chamber large-diameter pipeline is characterized in that the surface layer (15) is an annular structure which is wound by a rubber sheet (10) and has the same structure as the outer surface of the support ring frame (11).

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