CN218646319U

CN218646319U - Positioning prism support for tower column cable channel pipe of cable-stayed bridge

Info

Publication number: CN218646319U
Application number: CN202223016133.7U
Authority: CN
Inventors: 肖根旺; 李鹏; 陈炯玮; 李付伟
Original assignee: China Railway Major Bridge Engineering Group Co Ltd MBEC
Current assignee: China Railway Major Bridge Engineering Group Co Ltd MBEC
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-03-17
Anticipated expiration: 2032-11-09

Abstract

The utility model discloses a cable-stay bridge column cable way pipe positioning prism support relates to the engineering survey field, and cable-stay bridge column cable way pipe positioning prism support is fixed with three piece at least telescopic links including the prism frame of installing the prism on the prism frame, and the tip that the prism frame was kept away from to each telescopic link is provided with fixing device. The prism bracket of the utility model can fix the prism on the inner wall of the cableway pipe by using the fixing device, thereby reducing the process of erecting the prism rod and improving the measurement efficiency; through using a plurality of telescopic links, adjustable prism position to pipeline section center has reduced the prism position and has erect the measuring error that not accurate brought to improved measurement accuracy, support structure is simple simultaneously, convenient to carry, the simple operation, single can use this support to obtain measuring result, has reduced the measurement degree of difficulty, has practiced thrift the human cost, has improved measurement of efficiency.

Description

Positioning prism support for tower column cable channel pipe of cable-stayed bridge

Technical Field

The utility model relates to an engineering survey field especially relates to a cable-stay bridge tower column cable way pipe positioning prism support.

Background

The cable duct pipe is an important structure of a modern cable-stayed bridge, and the shape of the cable duct pipe is as follows: one end is a circular tube inlet and is externally provided with an anchoring plate, and the other end is a beveled elliptical tube outlet. The positioning characteristics are as follows: the positions of the inlet center of the circular tube of the stay cable inlet and the outlet center of the outlet bevel oval tube are precisely positioned, so that the actual spatial position of the cable duct tube is consistent with the theoretical position of the cable duct tube on the tower column. But the axis of the cable duct pipe and the central point of the pipe orifice are virtual, the positioning measurement precision requirement is high, and the positioning allowable deviation is 5mm, which causes great difficulty for the measurement work.

In the traditional cableway pipe orifice positioning measurement, a 'method of installing a measuring tool for marking the center of a pipe orifice and erecting a prism' is generally adopted, namely the virtual center of the cableway pipe orifice is replaced by the entity center of the measuring tool, then a prism rod and a prism are erected on the entity center of the measuring tool, the coordinate of the cableway pipe orifice center is obtained by measuring the coordinate of the prism, and the deviation rectification positioning is carried out on the cableway pipe orifice by the deviation of the coordinate from the theoretical coordinate.

However, the above-mentioned traditional cableway pipe orifice positioning and measuring method has the following disadvantages: according to the positioning and measuring method by means of the prism rod, the error of the prism rod to the point is large, particularly, the operations of installing a measuring tool on the inclined cableway pipe orifice, erecting the prism rod and the prism rod to the point are difficult to implement, and the error of the point to the point is large. Because the cross section of the inclined cableway pipe orifice is also inclined, the measuring tool needs to be obliquely placed on the cableway pipe orifice, the prism rod is erected on the center of the inclined measuring tool entity and points are aligned, the operation is difficult, the error of the alignment is larger, meanwhile, the traditional measuring method needs a plurality of measuring personnel to complete the cooperation, and the requirements on manpower resources are higher.

Therefore, the traditional measuring method has the advantages of low precision, multiple working procedures, high difficulty, high manpower requirement and low efficiency.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the utility model provides a technical problem be: how to reduce and measure the process, reduce and measure the degree of difficulty and erect the prism precision to the assigned position, and then play and practice thrift the human cost, improve measurement of efficiency, improve measurement accuracy's effect.

The above technical problem of the present invention can be solved by the following technical solutions:

the utility model provides a cable-stay bridge tower post cable way pipe positioning prism support, is fixed with three piece at least telescopic links including the prism frame of installing the prism on the prism frame, and the tip that the prism frame was kept away from to each telescopic link is provided with fixing device.

Furthermore, the telescopic rod comprises a fixed tooth groove rod, the fixed tooth groove rod is of a concave structure with an upward opening, and a movable tooth rod is arranged in the opening of the fixed tooth groove rod; a rack is arranged on the upper surface of the movable rack rod, a fine adjustment structure is arranged on the side edge of the fixed slotted rod, a gear set is arranged on the fine adjustment structure, and the gear set is meshed with the rack on the upper surface of the movable rack rod; the fixed tooth groove rod is fixed on the prism frame, and the fixing device is connected to the end part of the movable tooth rod, which is far away from the fixed tooth groove rod.

Further, the inner wall of the fixed slotted rod is smooth.

Furthermore, the bottom surface and two side surfaces of the movable rack bar are smooth.

Furthermore, the bottom surface and two side surfaces of the movable toothed bar are closely attached to the inner wall of the groove of the fixed toothed bar.

Furthermore, lubricating oil is filled in a gap between the fixed gear groove rod and the movable gear rod.

Furthermore, scales are marked on the fine adjustment structure.

Further, the fixing device is selected as a magnetic shoe.

Furthermore, the number of the telescopic rods is three, the adjacent telescopic rods basically form an included angle of 120 degrees, the axis of each telescopic rod basically passes through the center of the prism, and the axis of each telescopic rod and the surface of the prism are basically positioned on the same plane.

Furthermore, the number of the telescopic rods is three, the axes of the two telescopic rods are basically on the same straight line, the axis of the other telescopic rod is basically perpendicular to the straight line, the axis of each telescopic rod basically passes through the center of the prism, and the axis of each telescopic rod and the surface of the prism are basically on the same plane.

The utility model discloses beneficial effect who has:

compared with the defects of low measurement precision, more measurement procedures and low measurement efficiency caused by point measurement by erecting the prism rod in the prior art, the bracket of the utility model can fix the prism on the inner wall of the cableway pipe by using the fixing device, thereby reducing the procedure of erecting the prism rod and improving the measurement efficiency; through using a plurality of telescopic links, adjustable prism position to pipeline section center has reduced the prism position and has erect the measuring error that not accurate brought to measurement accuracy has been improved.

The utility model discloses a support structure is simple, convenient to carry, the simple operation, single can use this support to obtain measuring result, compares with prior art, has overcome the defect that traditional measuring method needs the cooperation of many measurement personnel to accomplish, has reduced the measurement degree of difficulty, has practiced thrift the human cost, has improved measurement of efficiency.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic plan view of the positioning prism support of the cable duct pipe of the tower column of the Y-shaped cable-stayed bridge of the utility model when being installed on the wall of the cable duct;

FIG. 2 is a schematic plan view of the positioning prism support of the tower column cable duct of the T-shaped cable-stayed bridge of the present invention when being installed on the wall of the cable duct;

fig. 3 is a schematic plan view of the telescopic rod of the present invention;

fig. 4 is a right side view of the telescopic rod of the present invention relative to fig. 3.

Reference numerals:

1. a telescopic rod; 2. a prism frame; 3. a prism; 4. a fixing device; 5. fixing a slotted rod; 6. a movable rack bar; 7. a fine adjustment structure; 8. a gear set; 9. a cableway tube.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

The utility model provides a positioning prism support for a cable-stayed bridge tower column cable duct, which comprises a prism frame 2 provided with a prism 3, wherein at least three telescopic rods 1 are fixed on the prism frame 2, the axis of each telescopic rod 1 passes through the center of the prism 3, the axis of each telescopic rod 1 and the surface of the prism 3 are positioned on the same plane, and the end part of each telescopic rod 1, which is far away from the prism frame 2, is provided with a fixing device 4; it should be noted that by adjusting the length and position of the telescopic rod 1, the center of the prism 3 can be coincided with the virtual center of the section of the cableway pipe 9, so that the accuracy of the point alignment is ensured, and the measurement accuracy is improved; by using the fixing device 4, the prism 3 can be fixed on the cableway pipe 9, and the stability of the prism 3 during measurement is ensured.

As shown in fig. 1, preferably, when the cable-stayed bridge tower column cable duct pipe positioning prism support of the utility model is used for measuring the circular pipe inlet of the cable duct pipe 9, three telescopic rods 1 are selected, and meanwhile, an included angle of 120 degrees is formed between the adjacent telescopic rods 1; it should be noted that by adjusting the lengths and positions of the three telescopic rods 1, the center of the prism 3 can be overlapped with the virtual center of the circular pipe inlet of the cableway pipe 9, so that the accuracy of point alignment is ensured, and the measurement accuracy of the circular pipe inlet of the cableway pipe 9 is further improved; an included angle of 120 degrees is formed between the adjacent telescopic rods 1 to form a Y shape, so that the support is stressed reasonably, the fixing operation is convenient, the stability of the support is improved, and the operation difficulty is reduced.

As shown in fig. 2, preferably, when the oblique-cut oval pipe outlet of the cable duct pipe 9 is measured by using the positioning prism support for the cable-stayed bridge tower column cable duct pipe of the present invention, three telescopic rods 1 are selected, and simultaneously, the axes of two telescopic rods 1 (defining the two telescopic rods 1 as horizontal telescopic rods 1) are on a straight line, and the axis of the other telescopic rod 1 (defining the telescopic rod 1 as vertical telescopic rod 1) is perpendicular to the straight line; it should be noted that by adjusting the lengths and positions of the three telescopic rods 1, the center of the prism 3 can be overlapped with the virtual center of the outlet of the oblique-cut oval tube of the cableway tube 9, so that the accuracy of point alignment is ensured, and the measurement accuracy of the outlet of the oblique-cut oval tube of the cableway tube 9 is further improved; the three telescopic rods 1 are in the position relation to form a T shape, so that the support is stressed reasonably, the fixing operation is convenient, the stability of the support is improved, and the operation difficulty is reduced.

Preferably, for making the utility model discloses a cable-stay bridge pylon cable way pipe positioning prism support can be fast fixed with cableway pipe 9 and dismantle, and fixing device 4 on telescopic link 1 selects to be the magnetism boots, and the magnetism boots are adsorbable to be fixed on cableway pipe 9's pipe wall during the measurement, fixes prism 3 on cableway pipe 6, and the measurement finishes can directly take off magnetism boots from cableway pipe 9's pipe wall, and is easy and simple to handle.

As shown in fig. 3 and 4, the telescopic rod 1 comprises a fixed slotted rod 5, the fixed slotted rod 5 is a concave structure with an upward opening, a movable toothed rod 6 is arranged in the opening of the fixed slotted rod 5, and a fixing device 4 is arranged at the end part of the movable toothed rod 6 far away from the fixed slotted rod 5; a rack is arranged on the upper surface of the movable rack bar 6, a fine adjustment structure 7 is arranged on the side edge of the fixed rack bar 5, a gear set 8 is arranged on the fine adjustment structure 7, and the gear set 8 is meshed with the rack on the upper surface of the movable rack bar 6; it should be noted that, the fine adjustment structure 7 is rotated to further drive the gear set 8 to rotate, and the gear set 8 is meshed with the rack on the upper surface of the movable rack bar 6, so that the movable rack bar 6 can be driven to slide in the groove of the fixed rack bar 5, and the length of the telescopic rod 1 is changed.

Preferably, in order to improve the stability and the integrity of the structure, the bottom surface and the two side surfaces of the movable rack bar 6 are closely attached to the inner wall of the fixed rack bar 5, so that only one-direction relative displacement between the movable rack bar 6 and the fixed rack bar 5 is ensured when the telescopic rod is adjusted, and the adjustment precision is improved.

Preferably, in order to enable the movable toothed bar 6 to flexibly slide in the fixed toothed bar 5, the inner wall of the fixed toothed bar 5 and the bottom surface and two side surfaces of the movable toothed bar 6 are smooth and coated with lubricating oil, so that the frictional resistance of the movable toothed bar 6 sliding in the fixed toothed bar 5 is reduced, the fine adjustment structure 7 is convenient to operate to adjust the length of the telescopic bar, and the operation difficulty is reduced.

Preferably, for making telescopic link 1 can accurate location, mark the scale on the fine setting structure 7, when operation fine setting structure 7, can observe the scale interval, control telescopic link 1's length to the position of accurate regulation prism 3.

The utility model discloses a concrete use of cable-stay bridge tower column cable way pipe positioning prism support can be:

firstly, the fixing devices 4 of the three telescopic rods 1 of the Y-shaped cable-stayed bridge tower column cable duct pipe positioning prism support are adsorbed on the inner wall of the circular pipe inlet of the cable duct pipe 9, the end surface of the fixing device 4 is aligned with the circular pipe inlet of the cable duct pipe 9, and the central plane of the prism 3 is superposed with the circular pipe inlet plane of the cable duct pipe 9.

Secondly, rotating the fine adjustment structures 7 of the gear sets 8 on the telescopic rods 1 to drive the movable toothed bars 6 to slide along the fixed toothed groove bars 5, so that scale values marked on the fine adjustment structures 7 are equal to the radius of the cableway pipe 9; to this end, the prism 3 center coincides with the virtual center of the circular tube inlet of the cableway tube 9.

And finally, measuring the actual coordinate of the virtual center of the circular pipe inlet of the cable pipe 9, calculating the difference value of the actual coordinate and the theoretical coordinate, and performing deviation rectification positioning on the circular pipe inlet of the cable pipe 9 according to the difference value.

Similarly, the deviation rectification and positioning can be carried out on the outlet of the oblique-cutting oval pipe of the cableway pipe 9, and the method comprises the following specific steps:

firstly, rotating a fine adjustment structure 7 of a gear set 8 on a vertical telescopic rod 1, and driving a movable toothed bar 6 to slide along a fixed toothed bar 5, so that the scale value marked by the fine adjustment structure 7 is equal to the radius of a cableway pipe 9; the fine adjustment structure 7 of the gear set 8 on the horizontal telescopic rod 1 is rotated, so that the scale value marked by the fine adjustment structure 7 is close to and slightly smaller than the radius of the cable duct 9.

Secondly, the fixing device 4 of the vertical telescopic rod 1 of the T-shaped cable-stayed bridge tower column cable duct pipe positioning prism support is adsorbed on the inner wall of the bottom center line of the outlet of the oblique-cut oval duct of the cable duct pipe 9, the support is pushed into the cable duct pipe 9 along the bottom center line, the fixing devices 4 of the two horizontal telescopic rods 1 are adsorbed on the inner wall of the cross section where the outlet center point of the oblique-cut oval duct of the cable duct pipe 9 is located, the end face of the fixing device 4 of the horizontal telescopic rod 1 is aligned with the vertical cross section where the outlet center point of the oblique-cut oval duct of the cable duct pipe 9 is located, and the vertical plane where the center point of the prism 3 is located is overlapped with the vertical cross section where the outlet center point of the oblique-cut oval duct of the cable duct pipe 9 is located.

Then, rotating the fine adjustment structure 7 of the gear set 8 on the horizontal telescopic rod 1 again, and driving the movable toothed bar 6 to slide along the fixed toothed groove bar 5, so that the scale value marked on the fine adjustment structure 7 is equal to the radius of the cableway pipe 9; to this end, the prism 3 center coincides with the chamfered oval tube outlet virtual center of the cableway tube 9.

And finally, measuring the actual coordinate of the virtual center of the outlet of the oblique-cutting oval pipe of the cable pipe 9, calculating the difference value between the actual coordinate and the theoretical coordinate, and performing deviation rectification and positioning on the outlet of the oblique-cutting oval pipe of the cable pipe 9 according to the difference value.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a cable-stay bridge tower post cableway pipe positioning prism support, the support is including prism frame (2) of installing prism (3), its characterized in that: at least three telescopic rods (1) are fixed on the prism frame (2), and a fixing device (4) is arranged at the end part of each telescopic rod (1) far away from the prism frame (2).

2. The cable-stayed bridge tower column cable duct positioning prism bracket according to claim 1, characterized in that: the telescopic rod (1) comprises a fixed tooth slot rod (5), the fixed tooth slot rod (5) is of a concave structure with an upward opening, and a movable tooth rod (6) is arranged in the opening of the fixed tooth slot rod (5); a rack is arranged on the upper surface of the movable rack bar (6), a fine adjustment structure (7) is arranged on the side edge of the fixed slotted bar (5), a gear set (8) is arranged on the fine adjustment structure (7), and the gear set (8) is meshed with the rack on the upper surface of the movable rack bar (6); the fixed tooth groove rod (5) is fixed on the prism frame (2), and the fixing device (4) is connected to the end part, far away from the fixed tooth groove rod (5), of the movable tooth rod (6).

3. The cable-stayed bridge tower cable duct pipe positioning prism bracket as recited in claim 2, characterized in that: the inner wall of the fixed gear groove rod (5) is smooth.

4. The cable-stayed bridge tower cable duct pipe positioning prism bracket as recited in claim 3, characterized in that: the bottom surface and two side surfaces of the movable rack bar (6) are smooth.

5. The cable-stayed bridge tower cable duct pipe positioning prism bracket as recited in claim 2, characterized in that: the bottom surface and two side surfaces of the movable rack bar (6) are closely attached to the inner wall of the fixed rack bar (5).

6. The cable-stayed bridge tower cable duct pipe positioning prism bracket as recited in claim 4, characterized in that: lubricating oil is filled in a gap between the fixed tooth groove rod (5) and the movable tooth rod (6).

7. The cable-stayed bridge tower cable duct pipe positioning prism bracket as recited in claim 2, characterized in that: scales are marked on the fine adjustment structure (7).

8. The cable-stayed bridge tower cable duct pipe positioning prism bracket as recited in claim 1, characterized in that: the fixing device (4) is selected as a magnetic shoe.

9. The cable-stayed bridge tower cable duct pipe positioning prism support according to any one of claims 1 to 8, characterized in that: the number of the telescopic rods (1) is three, the adjacent telescopic rods (1) basically form an included angle of 120 degrees, the axis of each telescopic rod (1) basically passes through the center of the prism (3), and the axis of each telescopic rod (1) and the surface of the prism (3) are basically in the same plane.

10. The cable-stayed bridge tower cable duct pipe positioning prism support according to any one of claims 1 to 8, characterized in that: the number of the telescopic rods (1) is three, the axes of the two telescopic rods (1) are basically on the same straight line, the axis of the other telescopic rod (1) is basically perpendicular to the straight line, the axis of each telescopic rod (1) basically passes through the center of the prism (3), and the axis of each telescopic rod (1) and the surface of the prism (3) are basically on the same plane.