阅读说明：本技术 时速160km刚性接触网吊柱限界测量工具及测量方法 (Tool and method for measuring boundary limit of hanging column of rigid contact net at speed of 160km per hour ) 是由 陈友良 滕伟 辛东红 李蔚龙 韩悌斌 张宁 张�杰 李旺其 袁海生 张斌 贺欢 于 2020-11-17 设计创作，主要内容包括：本发明提供一种时速160km刚性接触网吊柱限界测量工具及测量方法,属于城市轨道交通刚性接触网施工技术领域,测量工具包括滑槽和不锈钢直尺,所述滑槽设置有圆锥头、滑块及主水准泡,滑块与L形不锈钢板可靠连接,所述不锈钢直尺设置有副水准泡,且与L形不锈钢板可靠连接,不锈钢直尺与滑槽呈垂直状态。吊柱限界测量时将圆锥头顶端与标记的原始定位点重合,不锈钢直尺通过滑块在滑槽上滑动,不锈钢直尺与隧道壁的贴合点即为原始定位点限界增大后的位置,可对此处进行标记为最终定位点。本发明测量方法简单快捷,为时速160km刚性接触网吊柱限界测量提供施工经验。(The invention provides a measuring tool and a measuring method for a limiting range of a hanging column of a rigid contact net at a speed of 160km per hour, and belongs to the technical field of construction of rigid contact nets of urban rail transit. When the limit of the lifting column is measured, the top end of the conical head is overlapped with the marked original positioning point, the stainless steel ruler slides on the sliding groove through the sliding block, the joint point of the stainless steel ruler and the tunnel wall is the position of the enlarged limit of the original positioning point, and the position can be marked as a final positioning point. The measuring method is simple and rapid, and provides construction experience for measuring the boundary of the rigid contact net suspension post at the speed of 160km per hour.)

1. A rigid contact net davit limit measuring tool of 160km per hour, characterized by, including concrete chute (1) and stainless steel ruler (5);

the sliding chute (1) is connected with the stainless steel ruler (5) through an L-shaped stainless steel plate (4); wherein the L-shaped stainless steel plate (4) comprises a horizontal plate and a vertical plate which are vertically arranged;

the sliding chute (1) is provided with a conical head (2), a sliding block (3), a limiting screw rod (11) and a main leveling bubble (12), the conical head (2) is fixed at one end of the sliding chute (1), the sliding block (3) is arranged in the chute body of the sliding chute (1) and slides along the sliding chute (1), and the sliding block (3) is reliably connected with the horizontal plate of the L-shaped stainless steel plate (4); the main leveling bubble (12) is arranged in the middle of the sliding chute (1);

an auxiliary leveling bubble (13) is arranged in the middle of the stainless steel ruler (5) and used for verifying whether the stainless steel ruler (5) is in a horizontal state; and one end of the stainless steel ruler (5) is reliably connected with the vertical plate of the L-shaped stainless steel plate (4), so that the stainless steel ruler (5) and the sliding groove (1) are in a vertical state.

2. The tool for measuring the boundary limitation of the hanging post of the rigid catenary at the speed of 160km per hour as claimed in claim 1, wherein the surface of the sliding block (3) is internally provided with an internal threaded hole, and the sliding block (3) is reliably connected with the horizontal plate of the L-shaped stainless steel plate (4) by the connecting bolt (6).

3. The tool for measuring the boundary between the hanging columns of the rigid contact net at the speed of 160km per hour according to claim 1, wherein one end of the sliding chute (1) is firmly welded with the conical head (2), the other end of the sliding chute is provided with a limiting hole (10) for a limiting screw rod (11) to pass through, and the center of the conical head (2) and the zero scale of the stainless steel ruler (5) are on the same straight line.

4. The tool for measuring the boundary limitation of the hanging columns of a rigid catenary at the speed of 160km per hour as claimed in claim 1, wherein the sliding block (3) is fixedly connected with the bottom of the sliding chute (1) by a stop bolt (9).

5. A method for measuring the boundary limit of a hanging post of a 160km rigid overhead line system at a speed of 160km per hour by using the tool for measuring the boundary limit of the hanging post of the 160km rigid overhead line system at a speed of 160km per hour according to any one of claims 1 to 4, which is characterized by comprising the following steps:

firstly, measuring tools of different specifications are manufactured according to the limit adjustment condition of a suspension column of a rigid contact network in a construction site, the lengths of a chute (1) and a stainless steel ruler (5) are correspondingly increased along with the increase of a limit value, a horizontal plate of an L-shaped stainless steel plate (4) is reliably connected with a sliding block (3) through two connecting bolts (6), and a vertical plate is reliably connected with the stainless steel ruler (5) through the two connecting bolts (6);

step two, a measurer climbs the contact net operation tower wagon to a position below an original positioning point (14) needing clearance measurement, the top end of the conical head (2) is overlapped with the marked original positioning point (14), and the sliding chute (1) is adjusted to be in a natural vertical state by observing a main level bubble (12) on the sliding chute (1);

and thirdly, the sliding block (3) is moved relative to the sliding groove (1) to drive the stainless steel ruler (5) to slide up and down, the stainless steel ruler (5) is adjusted to be in a natural horizontal state by observing the auxiliary leveling bubble (13) on the stainless steel ruler (5), the joint point of the stainless steel ruler (5) and the tunnel wall is the position of the enlarged limit of the original positioning point (14), and the joint point is marked as a final positioning point (15).

6. The method for measuring the clearance of the suspension posts of the rigid catenary at the speed of 160km per hour as claimed in claim 5, wherein the lengths of the sliding chute (1) and the stainless steel ruler (5) are selected according to the tunnel wall condition when the clearance of the suspension posts is measured.

7. The method for measuring the clearance of the hanging post of the rigid contact net at the speed of 160km per hour according to claim 5, wherein the sliding groove (1) is designed in a concave shape, the sliding block (3) is designed in an I shape, and the sliding block (3) slides on the sliding groove (1) to drive the L-shaped stainless steel plate (4) and the stainless steel ruler (5) to slide up and down.

Technical Field

The invention belongs to the technical field of construction of urban rail transit rigid contact networks, and particularly relates to a measuring tool and a measuring method for a lifting column limit of a rigid contact network with a speed of 160km per hour.

Background

Along with the development of urban rail transit technology, the speed of a subway passenger car during operation is also improved, a rigid contact net is used as an important component of the urban rail transit, and the smoothness of a contact line of the rigid contact net can directly influence the current collection quality of the passenger car. For a rigid contact network with the speed of 160km per hour, in order to avoid the influence of sag of a bus bar on the smoothness of the contact line caused by large span, the design span value is higher than the design requirements of other subways, the span value must be strictly controlled, and the good dynamic performance of the pantograph-catenary during high-speed operation of a subway passenger car is ensured.

The construction of subway rigid contact networks generally has the pressure of short construction period, in order to ensure the requirement of construction period nodes, measurement work needs to be carried out by advancing in advance under the condition that track laying operation is not completed in a partial tunnel section, positioning points of the rigid contact networks are measured and marked by adopting a trackless measurement method, partial positioning points are positioned at tunnel expansion joints, tunnel connecting joints, shield section segment joints and other parts, deviation of the positioning points along the direction of a line needs to be carried out, because the span requirement of the 160 km/hour rigid contact networks is higher than that of other subway rigid contact networks, the situation that deviation along the direction of the line cannot be carried out on the positioning points at special positions possibly occurs, the deviation of the positioning points along the direction of the line is considered at the moment, and therefore, a measuring tool and a measuring method for the boundary limit of the 160 km/hour rigid contact network.

Disclosure of Invention

The invention provides a tool and a method for measuring the clearance of suspension columns of a rigid contact network at a speed of 160km per hour, aiming at the condition that the clearance adjustment of a special position in the construction of the rigid contact network at the speed of 160km per hour of urban rail transit is limited by a designed span value and needing to enlarge the clearance of part of the suspension columns.

In order to solve the technical problem, the invention provides a rigid contact net lifting column limit measuring tool with the speed of 160km per hour, which comprises a sliding chute and a stainless steel ruler;

the sliding groove is connected with the stainless steel ruler through an L-shaped stainless steel plate; the L-shaped stainless steel plate comprises a horizontal plate and a vertical plate which are vertically arranged;

the sliding groove is provided with a conical head, a sliding block, a limiting screw rod and a main leveling bubble, the conical head is fixed at one end of the sliding groove, the sliding block is arranged in a groove body of the sliding groove and slides along the sliding groove, and the sliding block is reliably connected with a horizontal plate of the L-shaped stainless steel plate; the main leveling bubble is arranged in the middle of the sliding chute;

the middle part of the stainless steel ruler is provided with an auxiliary level bubble for verifying whether the stainless steel ruler is in a horizontal state; and one end of the stainless steel ruler is reliably connected with the vertical plate of the L-shaped stainless steel plate, so that the stainless steel ruler is perpendicular to the sliding groove.

Further, the surface of the sliding block is internally provided with an internal thread hole, and the sliding block is reliably connected with the horizontal plate of the L-shaped stainless steel plate through the connecting bolt.

Furthermore, one end of the sliding groove is firmly welded with the conical head, the other end of the sliding groove is provided with a limiting hole for a limiting screw to penetrate through, and the center of the conical head and the zero scale of the stainless steel ruler are on the same straight line.

Furthermore, the sliding block is fixedly connected with the bottom of the sliding groove through a brake bolt.

In order to solve the technical problem, the invention provides a method for measuring the boundary limit of a rigid catenary suspension post at the speed of 160km per hour by using the measuring tool, which comprises the following steps:

firstly, manufacturing measuring tools with different specifications according to the limit adjustment condition of a suspension column of a rigid contact network in a construction site, and correspondingly increasing the lengths of a chute and a stainless steel ruler along with the increase of a limit value, wherein a horizontal plate of an L-shaped stainless steel plate is reliably connected with a sliding block through two connecting bolts, and a vertical plate is reliably connected with the stainless steel ruler through two connecting bolts;

step two, a measurer climbs the contact net operation tower wagon to a position below an original positioning point needing clearance measurement, the top end of the conical head is overlapped with the marked original positioning point, and the sliding chute is adjusted to be in a natural vertical state by observing a main level bubble on the sliding chute;

and thirdly, driving the stainless steel ruler to slide up and down by moving the sliding block relative to the sliding groove, adjusting the stainless steel ruler to be in a natural horizontal state by observing an auxiliary level bubble on the stainless steel ruler, wherein the joint point of the stainless steel ruler and the tunnel wall is the position of the enlarged original positioning point limit, and marking the joint point as a final positioning point.

Further, the lengths of the sliding grooves and the stainless steel ruler are selected according to the tunnel wall condition when the hoisting columns are limited for measurement.

Furthermore, the sliding groove is designed in a concave shape, the sliding block is designed in an I shape, and the sliding block slides on the sliding groove to drive the L-shaped stainless steel plate and the stainless steel ruler to slide up and down.

Compared with the prior art, the invention has the following advantages:

1. on the premise of determining the original positioning point of the rigid contact net by adopting a trackless measuring technology, the measuring tool provided by the invention is easy to process and produce, light in weight, convenient to carry, low in investment cost, economical and applicable;

2. the measuring method is popular and easy to understand, the measuring efficiency is high, the measuring task can be completed only by one person working aloft, the measuring accuracy is high, the contact net construction can be quickly carried out under the situation that the construction period is short, and the construction pressure is reduced;

3. the boundary measurement of the rigid contact net lifting column is carried out in a trackless state, construction units among tunnel sections are few, interference caused by cross construction of other specialties is small, the boundary measurement of the rigid contact net lifting column is carried out in a rail state, the track occupation time is short, mutual avoidance with other specialties is timely, and the phenomenon that construction avoidance of the unit or other units is not timely and people are idle is avoided.

Drawings

Fig. 1 is a schematic view of a main view structure of a measuring tool for measuring a clearance of a 160km rigid catenary suspension post at a speed per hour provided by the invention;

fig. 2 is a schematic top view of a 160km rigid catenary suspension post clearance measurement tool provided by the invention;

in the figure: 1-a chute; 2-a conical head; 3-a slide block; 4-L-shaped stainless steel plates; 5-stainless steel ruler; 6-connecting bolts; 7-a gasket; 8-a screw cap; 9-a brake bolt; 10-a limiting hole; 11-a limit screw; 12-a primary vial; 13-secondary level bubble; 14-original anchor point; 15-final anchor point.

Detailed Description

The invention provides a tool for measuring a boundary limit of a hanging column of a rigid contact net at a speed of 160km per hour, which comprises a sliding chute 1 and a stainless steel ruler 5, wherein the dimension of the stainless steel ruler 5 is consistent with the adjustment dimension of the boundary limit of the hanging column to be measured, and the dimension of the sliding chute 1 is correspondingly increased along with the increase of the adjustment dimension of the boundary limit of the hanging column.

The chute 1 is connected with the stainless steel ruler 5 through an L-shaped stainless steel plate 4; wherein the L-shaped stainless steel plate 4 comprises a horizontal plate and a vertical plate which are arranged vertically to each other;

the sliding chute 1 is provided with a conical head 2, a sliding block 3, a limiting screw rod 11 and a main leveling bubble 12, the conical head 2 is fixed at one end of the sliding chute 1, the sliding block 3 is arranged in a chute body of the sliding chute 1 and slides along the sliding chute 1, and the sliding block 3 is reliably connected with a horizontal plate of the L-shaped stainless steel plate 4; the main level bubble 12 is arranged in the middle of the sliding chute 1;

the middle part of the stainless steel ruler 5 is provided with an auxiliary leveling bubble 13 for verifying whether the stainless steel ruler 5 is in a horizontal state; and one end of the stainless steel ruler 5 is reliably connected with the vertical plate of the L-shaped stainless steel plate 4, so that the stainless steel ruler 5 and the sliding chute 1 are in a vertical state.

Further, the surface of the sliding block 3 is internally provided with an internal threaded hole, and the sliding block 3 is reliably connected with the horizontal plate of the L-shaped stainless steel plate 4 through the connecting bolt 6.

Furthermore, one end of the sliding groove 1 is firmly welded with the conical head 2, the other end of the sliding groove is provided with a limiting hole 10 for a limiting screw rod 11 to penetrate through, and the center of the conical head 2 and the zero scale of the stainless steel ruler 5 are on the same straight line.

Further, the sliding block 3 is fixedly connected with the bottom of the sliding chute 1 through a stop bolt 9.

Spout 1 is the design of character cut in bas-relief, slider 3 is the design of I-shaped, reserve three holes on the horizontal plate of L shape stainless steel plate 4, two connecting bolt 6 pass two holes wherein and slider 3's internal thread hole reliable connection, a hole is connected with slider 3 as the connecting hole of braking bolt 9 in addition, leave certain clearance between spout 1 and the slider 3, guarantee that slider 3 can slide from top to bottom in the slot of spout 1, set up a plurality of screws on 1 cell body extending direction of spout simultaneously, with the internal thread that uses braking bolt 9 to pass slider 3 with the optional position of slider 3 jamming on spout 1. The one end of spout 1 is provided with circular cone head 2 and welds firmly, for guaranteeing the measuring accuracy of boundary limit, the zero scale of the center of circular cone head 2 and stainless steel ruler 5 is located same straight line, the other end of spout 1 is provided with spacing hole 10, spacing screw 11 passes spacing hole 10 and avoids slider 3 to drop, the middle part of spout 1 is provided with main air level 12, main air level 12 is arranged perpendicularly with spout 1 for guarantee davit boundary limit measurement in-process spout 1 is in the vertical state.

Stainless steel ruler 5's scale is clear, and two holes are reserved to little scale one end, and L shape stainless steel plate 4's vertical board is 90 designs with the horizontal plate, and reserve two holes on the vertical board, and two connecting bolt 6 pass L shape stainless steel plate 4's vertical board and stainless steel ruler 5's preformed hole reliably are connected the two, and stainless steel ruler 5 is perpendicular with spout 1 and arranges, and stainless steel ruler 5's middle part is provided with vice air level 13, and vice air level 13 arranges with stainless steel ruler 5 level for guarantee among the davit boundary limit measurement process stainless steel ruler 5 is in the horizontality.

In addition, the invention also provides a method for measuring the boundary limit of the rigid contact net lifting column with the speed of 160km per hour by using the measuring tool, which comprises the following steps:

firstly, manufacturing measuring tools of different specifications according to the limit adjustment condition of a suspension column of a rigid contact network in a construction site, and correspondingly increasing the lengths of a chute 1 and a stainless steel ruler 5 along with the increase of a limit value, wherein a horizontal plate of an L-shaped stainless steel plate 4 is reliably connected with a sliding block 3 through two connecting bolts 6, and a vertical plate is reliably connected with the stainless steel ruler 5 through two connecting bolts 6;

according to the design span adjustment range and the construction site rigid contact net davit clearance adjustment condition, make the measuring tool of different specifications, need increase 200mm like the davit clearance, then select stainless steel ruler 5's length to be 200mm, need increase 300mm like the davit clearance, then select stainless steel ruler 5's length to be 300mm, because the tunnel wall is circular, so along with the increase of stainless steel ruler 5 length, the length of spout 1 also needs to increase, guarantees that slider 3 leaves the slip allowance.

Step two, a measurer climbs the contact net operation tower wagon to a position below an original positioning point 14 needing clearance measurement, the top end of the conical head 2 is overlapped with the marked original positioning point 14, and the sliding chute 1 is adjusted to be in a natural vertical state by observing a main bubble 12 on the sliding chute 1;

and step two, preparing measuring tools of various specifications by a measuring staff, climbing the overhead line system operation ladder truck to a position below an original positioning point 14 needing clearance measurement, coinciding the top end of the conical head 2 on the sliding chute 1 with the marked original positioning point 14, observing the main bubble 12 on the sliding chute 1, adjusting the sliding chute 1 until the main bubble 12 is completely horizontal, and indicating that the sliding chute 1 is in a natural vertical state at the moment.

And step three, driving the stainless steel ruler 5 to slide up and down by moving the sliding block 3 relative to the sliding chute 1, adjusting the stainless steel ruler 5 to be in a natural horizontal state by observing the auxiliary leveling bubble 13 on the stainless steel ruler 5, wherein the joint point of the stainless steel ruler 5 and the tunnel wall is the position of the enlarged limit of the original positioning point 14, and marking the joint point as a final positioning point 15.

And step three, sliding the stainless steel ruler 5 up and down, observing the auxiliary level bubble 13 on the stainless steel ruler 5, adjusting the stainless steel ruler 5 until the auxiliary level bubble 13 is completely horizontal, indicating that the stainless steel ruler 5 is in a natural horizontal state, at the moment, a zero scale extension line of the stainless steel ruler 5 is superposed with the original positioning point 14, a joint point of the stainless steel ruler 5 and the tunnel wall is the position after the limit of the original positioning point 14 is increased, marking the position by using a red marker pen, rechecking whether the position meets the relevant design requirements of drilling the suspension column base plate, if not, replacing measuring tools of other specifications for re-measuring, and marking the final positioning point 15 by using red paint.

Further, the lengths of the sliding chute 1 and the stainless steel ruler 5 are selected according to the tunnel wall condition when the hoisting column is limited for measurement.

Further, the sliding groove 1 is designed in a shape of Chinese character 'ao', the sliding block 3 is designed in an I shape, and the sliding block 3 slides on the sliding groove 1 to drive the L-shaped stainless steel plate 4 and the stainless steel ruler 5 to slide up and down.

In the specific implementation process, the method is used in the limit measurement process of the rigid contact net lifting column of the first-stage engineering of the new Beijing rail transit field line. The speed per hour of line design of the first-stage project of the Beijing rail transit new airport line is 160km, the improvement of the speed per hour of the design puts forward higher requirements on related design standards, wherein the design span value is not more than eight meters, and the influence of the sag of a bus bar between suspension columns on the smoothness of a contact line is avoided, so that the good high-speed running state of a passenger car is ensured.

When a facility installation project of a Beijing rail transit new airport line first-stage engineering power supply system and an integrated monitoring system device is constructed in an approach mode, track laying operation is not finished in most tunnel sections, in order to guarantee node arrangement of a construction period, a trackless measuring method is used for measuring and marking locating points, span adjustment is carried out according to the position condition of original locating points, if special positions are met and spans need to be increased but the conditions do not meet design span values, a scheme of increasing a lifting column limit is adopted to guarantee the design span values.

The equipment installation items of the power supply system and the comprehensive monitoring system of the first-stage project of the Beijing rail transit new airport line successfully pass through the related detection, test and acceptance of the rigid contact net, the running state of the passenger car is good after the passenger car is opened, and the practicability and accuracy of the invention are verified.