Device for controlling verticality of embedded pipe of plumb line
Technical Field
The utility model relates to the technical field of installation and detection of embedded pipes, in particular to a device for controlling the verticality of an embedded pipe of a plumb line.
Background
The vertical line system is a simple, convenient and effective measuring means for observing the horizontal displacement and deflection of the hydraulic building, and generally consists of a hanging money, a hanging (or fixing) device, a hanging hammer (or a floating barrel), an observation pier, a measuring and reading device (a vertical line coordinatograph, an optical coordinatograph, a vertical line sight) and the like. The common vertical lines are a plumb line and a dead drop. The plumb line can measure the relative horizontal displacement and deflection of the structure, and the inverse plumb line can measure the absolute horizontal displacement of the structure. The fixed end of the inverted vertical line is poured at the lower part of the whole vertical line system, and the vertical line is pulled up by the upper pontoon. If the anchor is mounted at a fixed point within the foundation, the measurement of the station is the absolute displacement of the station along the vertical. The plumb line consists of a plumb line with a hanging point at the upper part and a plurality of measuring stations arranged on the building at the lower part of the plumb line. And a heavy hammer is hung at the lower part of the vertical line to be in a tensioning state, and the heavy hammer is arranged in the damping box to restrain the swing of the vertical line.
The inverted vertical line protection pipe is buried and installed mainly in a drilling mode, and the inverted vertical line protection pipe is buried in a pre-buried mode and a later-drilled mode along with concrete pouring in the early stage. Whether the vertical line system is installed and embedded successfully depends on the effective aperture of the protection pipe, and the perpendicularity of drilling holes or buried pipes must be ensured to ensure that the effective aperture meets the requirement. The guarantee of the verticality of the drilling mode of the vertical system mainly depends on factors such as the precision of drilling equipment, the technical level of drilling personnel and the like, and the verticality control of the embedded pipe in an embedded mode mainly controls the center coordinates of a circle by an infrared level meter, a horizontal guiding rule and three point coordinates on the circumference of a measured steel pipe.
The embedded pipe perpendicularity control device in the prior art has the following defects:
1. The drilling mode is high in cost and causes larger damage to the concrete structure, and the reason is that the drilling depth is large, the drilling of normal lines is tens of meters or even hundreds of meters generally, the drilling perpendicularity requirement is high, the final effective aperture requirement is more than or equal to 100mm, and the diameter of a drill bit is more than 200mm generally. Because the standard is strict, the precision of drilling equipment and the technical level of drilling personnel are required to be high, the drilling cost is high, the normal vertical hole drilling cost can reach 2000-5000 yuan/m, and foreign and plateau environments can be higher. Meanwhile, due to the large-diameter drilling, the inside of the concrete structure is damaged, and according to the past experience, seepage water generally flows out along the drilling after the dam stores water. The whole dam structure is influenced, and the service life of the vertical line system and the credibility of observation results are influenced.
2. The embedded pipe verticality is controlled by the guiding rule, the level rule and the like, and the precision is low, so that the guiding rule, the level rule and the like can only control one direction of the whole circumference, the guiding rule, the level rule and the like lean against the wall axis of the steel pipe without being exactly leaned against the wall axis of the steel pipe, human errors exist, and meanwhile, whether dislocation exists at the joint position after the steel pipe is lengthened or not can not be judged. The verticality of a single steel pipe can only be qualitatively judged, and the deviation of the circle center cannot be quantitatively measured.
3. The efficiency of controlling the circle center coordinates by using the coordinates of 3 points on the circumference of the steel pipe is low because the coordinates of 3 points on the circumference of the steel pipe are observed by the total station, firstly, the heights of the 3 points on the circumference of the steel pipe are consistent, a certain time is needed in the process of searching the same elevation, secondly, the process of calculating the circle center by using the coordinates of the three points on the circumference is relatively complex, a certain program is needed, and meanwhile, errors can occur in the data input program and the calculation process, so that the efficiency is low.
4. The effective aperture operability of the steel tube is not strong by adopting an elastic centering device, an infrared level gauge and the like, and the steel tube cannot be implemented due to longer length when the steel tube is lengthened. The reason is that the elastic centering device is needed to be matched with a floating body group, a vertical line and the like, and two ends (a transmitting end and a receiving end) of the infrared level meter are needed to be relatively fixed. When the on-site civil engineering is constructed, the floating body group is not convenient to transport to the site for implementation, and in the pre-burying process of the vertical pipe, two ends of the floating body group are suspended (one end is positioned at the top of the measuring station and is about 5m away from the ground, and the other end is extended and is up to 6m away from the reference surface), so that the transmitting end and the receiving end cannot be reached and fixed without equipment. Therefore, the operability of the elastic centering device, the infrared level gauge and the like in the steel pipe lengthening process is not very strong, and the elastic centering device is mainly applied to the effective aperture checking process after the steel pipe is installed.
Therefore, it is necessary to develop a device for controlling the verticality of the embedded pipe of the plumb line to solve the above problems.
Disclosure of utility model
The utility model aims to solve the problems and designs a device for controlling the verticality of the embedded pipe of the plumb line.
The utility model realizes the above purpose through the following technical scheme:
a device for controlling plumb line pre-buried pipe straightness that hangs down includes:
The fixing and centering device is formed into a cross plate-shaped structure, the fixing and centering device is horizontally arranged at the top of the embedded pipe, the center of the fixing and centering device is arranged on the axis of the embedded pipe, and the four outer side ends of the fixing and centering device extend out of the side wall of the embedded pipe;
The lower end of the connecting rod is connected with the upper part of the center of the fixed centering device;
the upper end of the connecting rod is connected with the prism;
The upper ends of the four plumb lines are respectively connected with the four outer side ends of the fixed centering device;
Four wire weights are respectively connected with the lower ends of the four plumb wires.
The utility model has the beneficial effects that:
According to the application, through connection and coordination of the fixed centering device with four plumb lines and four line drops, 4-direction verticality of the embedded pipe can be observed, meanwhile, the central coordinate of the pipe orifice can be observed through the prism arranged at the top of the fixed centering device, so that the offset of the center of the steel pipe is calculated, and finally, the effective aperture of the embedded pipe is calculated through the central offset, so that the embedded pipe embedding installation quality and success rate are improved, the range of a plumb line coordinatometer (determined by the effective aperture) is ensured, the working efficiency is improved, and the labor cost is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present application;
FIG. 2 is a top view of the stationary centering apparatus of the present application;
FIG. 3 is a front view of the stationary centering device of the present application;
FIG. 4 is a schematic view of the installation structure of the fixing and centering device on the embedded pipe;
in the figure, 1-embedded pipe, 2-fixed centering device, 21-fixed plate, 211-transverse plate, 212-vertical plate, 22-screw hole, 23-pinhole, 3-plumb line, 4-line weight, 5-connecting rod and 6-prism.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships conventionally put in place when the inventive product is used, or the directions or positional relationships conventionally understood by those skilled in the art are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, terms such as "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection, may be a mechanical connection or an electrical connection, may be a direct connection, may be an indirect connection via an intermediary, or may be a communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The following describes specific embodiments of the present utility model in detail with reference to the drawings.
As shown in fig. 1 to 4, the device for controlling the perpendicularity of the plumb line embedded pipe 1 comprises:
The fixing and centering device 2 is formed into a cross plate-shaped structure, the fixing and centering device 2 is horizontally arranged on the top of the embedded pipe 1, the center of the fixing and centering device 2 is arranged on the axis of the embedded pipe 1, the four outer side ends of the fixing and centering device 2 extend out of the side wall of the embedded pipe 1, the fixing and centering device 2 comprises four identical fixing plates 21, and two adjacent fixing plates 21 are perpendicular to each other. The fixed plate 21 includes diaphragm 211, two risers 212, and the first end of diaphragm 211 of four fixed plates 21 links together, and two risers 212 are installed respectively at the both sides wall of diaphragm 211 outside tip, and the inboard tip of riser 212 is slightly greater than the external diameter of pre-buried pipe 1 to the axial lead distance of pre-buried pipe 1, and the inboard tip card of riser 212 shelves on the outer wall of pre-buried pipe 1. The outer end of each transverse plate 211 is provided with a pinhole 23, and the positions of the pinholes 23 on each transverse plate 211 are the same;
The center of the fixing and centering device 2 is provided with a screw hole 22, and the lower end of the connecting rod 5 is in threaded fit with the screw hole 22;
The upper end of the connecting rod 5 is connected with the prism 6;
Four plumb lines 3, wherein the four plumb lines 3 are respectively arranged through four pinholes 23 on four transverse plates 211, and the pinholes 23 are preferably small holes of 2 mm;
four wire weights 4, wherein the four wire weights 4 are respectively connected with the lower ends of the four plumb wires 3.
When the perpendicular line embedded pipe 1 is constructed, the fixed centering device 2 is clamped on the pipe orifice of the embedded pipe 1 (the transverse plate 211 is horizontally arranged above the pipe orifice of the embedded pipe 1, the transverse plate 211 is used for clamping and blocking the side wall of the limiting embedded pipe 1, the center of the fixed centering device 2 is arranged on the axis of the embedded pipe 1 after the fixed centering device is installed), the connecting rod 5 is screwed into the center screw hole 22 of the fixed centering device 2, the prism 6 is connected with the connecting rod 5, and the plumb line 3 passes through the pinholes 23 around the fixed centering device 2. When the embedded pipe 1 is in hoisting connection (before welding and fixing), the distance between each elevation of the plumb line 3 and the wall of the embedded pipe 1 is observed, and the deflection direction and the deflection size of the steel pipe can be judged through the difference of the distances, so that whether the perpendicularity meets the requirement is judged. And measuring the central coordinate of the prism 6 by using a total station to obtain the central coordinate of the embedded pipe 1. And comparing the center coordinates of the steel pipe with the control coordinates, and judging whether the center offset and the offset value of the embedded pipe 1 are in a controllable range. When the verticality and the center coordinate deviation value measured by the plumb line 3 are all within a controllable range, the embedded pipe 1 can be welded and fixed. The verticality and the center offset value can be checked at any time in the construction and pouring process around the vertical line embedded pipe 1.
In the application, the prism 6 is a common round prism 6 with a target. The prism 6 is processed by stainless steel, the length of the connecting rod 5 is 15-20cm, one end of the connecting rod is connected with the fixed centering device 2 through threads, and the other end of the connecting rod is matched with the prism 6. The connecting rod 5 of the prism 6 is made of stainless steel materials to prevent rust, the length of 15-20cm is mainly considered that the length cannot be too long, the perpendicularity of the prism is possibly influenced, the center of the prism 6 cannot be ensured to be the center of a pipe orifice of a steel pipe, the prism 6 cannot be too short, the prism 6 is close to the center of the pipe orifice, and if the length of the embedded pipe 1 is longer and the total station erection height is lower, the line of sight from the total station to the center of the prism 6 is blocked by the pipe wall.
The wire weight 4 adopts a solid cone, the weight is 300g, the weight is not required to be too heavy or light, the plumb line 3 is ensured to be blown by breeze and to swing indefinitely while being plumb, and the plumb line 3 adopts wear-resistant cotton wires or high-strength nylon wires with the diameter of about 1mm, and is mainly ensured to be wear-resistant and durable for repeated recycling.
The length from the wall of the embedded pipe 1 to the pinhole 23 is 5cm, and the fact that the wall of the embedded pipe cannot be too short and too long is mainly considered, the wall of the embedded pipe can be hit by a plumb, and the distance between the line body and the pipe wall is inconvenient to be observed too long.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that several modifications and variations can be made without departing from the technical principle of the present utility model, and these modifications and variations should also be regarded as the scope of the utility model.