阅读说明：本技术 一种跨座式单轨拉力支座的锚杆更换方法 (Anchor rod replacing method of straddle type single-rail tension support ) 是由 卓杨旭 程雪红 郑伦 陈俊霖 张津珲 刘宏伟 杨富强 罗聪 周发顺 于 2021-09-23 设计创作，主要内容包括：本发明公开了一种跨座式单轨拉力支座的锚杆更换方法,包括：解除支座下摆与盖梁的固定；顶升所述支座下摆上方的轨道梁的一端至预设高度；从所述支座下摆的下方与所述盖梁之间取出待更换的锚杆并安装新的所述锚杆；将所述轨道梁复位并将所述支座下摆相对所述盖梁固定。本发明所提供的锚杆更换方法能够将跨座式单轨拉力支座和盖梁之间折断在盖梁内的锚杆取出,便于对锚杆进行更换,保证跨座式单轨的安全运行。(The invention discloses an anchor rod replacing method of a straddle type monorail tension support, which comprises the following steps: the fixing of the lower hem of the support and the cover beam is released; jacking one end of the track beam above the lower hem of the support to a preset height; taking out an anchor rod to be replaced from the position between the lower part of the lower hem of the support and the cover beam and installing a new anchor rod; and resetting the track beam and fixing the lower hem of the support relative to the cover beam. The anchor rod replacing method provided by the invention can be used for taking out the anchor rod broken between the straddle type single-rail tension support and the cover beam in the cover beam, so that the anchor rod is convenient to replace, and the safe operation of the straddle type single rail is ensured.)

1. A method for replacing an anchor rod of a straddle-type monorail tension support is characterized by comprising the following steps:

the fixing of the lower hem of the support and the cover beam is released;

jacking one end of the track beam above the lower hem of the support to a preset height;

taking out an anchor rod to be replaced from the position between the lower part of the lower hem of the support and the cover beam and installing a new anchor rod;

and resetting the track beam and fixing the lower hem of the support relative to the cover beam.

2. The anchor rod replacing method for the straddle-type monorail tension support according to claim 1, wherein the step of releasing the fixation of the support skirt and the cover beam is as follows: and removing all the fastening nuts and the locknuts of the anchor rods of the lower hem of the support, and simultaneously removing the wedge blocks between the lower hem of the support and the shear resistant tenons.

3. The anchor rod replacing method for the straddle-type monorail tension support according to claim 1, wherein the step of jacking one end of the track beam above the lower hem of the support to a preset height comprises the following steps: and removing the joint plates at the two ends of the track beam to be jacked and the joint plates at the adjacent ends of the track beam adjacent to the track beam.

4. The anchor rod replacing method for the straddle-type monorail tension support according to any one of claims 1 to 3, wherein the step of jacking one end of the track beam above the support lower hem to a preset height further comprises the following steps: and limiting devices are arranged on two sides of the adjacent track beam to be jacked and used for extending and attaching to the side surface of the track beam to be jacked.

5. The anchor rod replacing method for the straddle-type monorail tension support according to claim 4, wherein the step of jacking one end of the track beam above the lower hem of the support to a preset height specifically comprises the following steps:

arranging a first jacking device above the capping beam or above the shear tenon of the lower hem of the support, and arranging a second jacking device between the capping beam and the track beam to be jacked; alternately driving the first jacking device and the second jacking device.

6. The method for replacing the anchor rod of the straddle-type monorail tension support according to claim 5, wherein the first jacking device is a jack, and the second jacking device is a screw rod supporting device;

the step of alternately driving the first jacking device and the second jacking device is as follows: and driving the jack to jack, driving the screw rod supporting device to support the track beam when the jack is restricted in stroke, relieving the pressure of the jack, and driving the jack to jack the track beam again after a cushion block is arranged at the top end or the bottom end of the jack.

7. The method for replacing the anchor rod of the straddle-type monorail tension support according to claim 5, wherein a fixing plate is arranged outside the limiting device, and a fall-prevention protection piece is connected between the fixing plate and the second jacking device.

8. The method for replacing an anchor rod of the straddle-type monorail tension support according to claim 7, wherein the step of resetting the track beam comprises the steps of: and alternately driving the first jacking device and the second jacking device to retract, and repeating the operation until the support lower hem is attached to the cover beam again.

Technical Field

The invention relates to the field of rail transit, in particular to a method for replacing an anchor rod of a straddle type monorail tension support.

Background

The monorail transportation is a rail transportation system which adopts rubber tires and runs on a rail beam integrating beam and rail, wherein vehicles run by straddling the rail beam, and the monorail transportation is called straddle type monorail transportation. The track beam is connected with a lower structure (pier stud and capping beam) through a tension support to form a monorail beam bridge system. The straddle type single-rail tension support is fixed above the cover beam and supports the rail beam. The straddle type single-rail tension support comprises a support upper pendulum, a support lower pendulum and a shear resistant tenon fixed on a cover beam and used for limiting the support lower pendulum, an anchor box is embedded in the cover beam, and the support lower pendulum is fixed on the cover beam through an anchor rod and the anchor box in a matched mode. The tension support of the straddle type monorail is subjected to huge acting force in the long-term running process, and the condition of anchor rod fracture can be generated, so that the balance of a track beam is influenced, even serious safety accidents are caused, the fractured anchor rod is difficult to take out, and the fractured anchor rod cannot be replaced in time.

Therefore, how to replace the anchor rod of the straddle-type monorail tension support becomes a technical problem to be solved by the technical personnel in the field.

Disclosure of Invention

The invention aims to provide an anchor rod replacing method of a straddle-type single-rail tension support, which can take out an anchor rod broken in a cover beam, is convenient to replace and maintain the anchor rod and improves the running safety of the straddle-type single rail.

In order to achieve the aim, the invention provides an anchor rod replacing method of a straddle type monorail tension support, which comprises the following steps:

the fixing of the lower hem of the support and the cover beam is released;

jacking one end of the track beam above the lower hem of the support to a preset height;

taking out an anchor rod to be replaced from the position between the lower part of the lower hem of the support and the cover beam and installing a new anchor rod;

and resetting the track beam and fixing the lower hem of the support relative to the cover beam.

Optionally, the step of releasing the fixing of the support lower hem and the cover beam is as follows: and removing all the fastening nuts and the locknuts of the anchor rods of the lower hem of the support, and simultaneously removing the wedge blocks between the lower hem of the support and the shear resistant tenons.

Optionally, the step of jacking one end of the track beam above the support lower hem to a preset height includes: and removing the joint plates at the two ends of the track beam to be jacked and the joint plates at the adjacent ends of the track beam adjacent to the track beam.

Optionally, before the step of jacking one end of the track beam above the lower hem of the support to a preset height, the method further includes: and limiting devices are arranged on two sides of the adjacent track beam to be jacked and used for extending and attaching to the side surface of the track beam to be jacked.

Optionally, the step of jacking one end of the track beam above the lower hem of the support to a preset height specifically comprises:

arranging a first jacking device above the capping beam or above the shear tenon of the lower hem of the support, and arranging a second jacking device between the capping beam and the track beam to be jacked; alternately driving the first jacking device and the second jacking device.

Optionally, the first jacking device is a jack, and the second jacking device is a screw rod supporting device;

the step of alternately driving the first jacking device and the second jacking device is as follows: and driving the jack to jack, driving the screw rod supporting device to support the track beam when the jack is restricted in stroke, relieving the pressure of the jack, and driving the jack to jack the track beam again after a cushion block is arranged at the top end or the bottom end of the jack.

Optionally, a fixing plate is arranged outside the limiting device, and a falling prevention protection member is connected between the fixing plate and the second jacking device.

Optionally, the step of resetting the track beam is: and alternately driving the first jacking device and the second jacking device to retract, and repeating the operation until the support lower hem is attached to the cover beam again.

Compared with the prior art, the invention discloses an anchor rod replacing method of the straddle-type single-rail tension support, aiming at the problems that an anchor rod between the tension support and a cover beam of the straddle-type single rail is damaged by fracture and the like, and the anchor rod fractured at the cover beam cannot be taken out for replacing the anchor rod.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a flow chart of an anchor rod replacing method of a straddle-type monorail tension support provided by an embodiment of the invention;

FIG. 2 is a flow chart of an anchor rod replacing method of the straddle-type monorail tension support provided by another embodiment of the invention;

FIG. 3 is a schematic diagram of bolt replacement;

fig. 4 is a side view of fig. 3.

Wherein:

1-capping beam, 2-lower support pendulum, 3-shear tenon, 4-upper support pendulum, 5-track beam, 6-anchor rod, 7-fixing plate, 8-limiting device, 9-anti-falling protection piece, 10-first jacking device, 11-second jacking device, 12-anchor box, 61-fastening nut and 62-anti-loose nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 to 4, fig. 1 is a flowchart illustrating an anchor rod replacing method of a straddle-type monorail tension support provided by an embodiment of the invention, fig. 2 is a flowchart illustrating an anchor rod replacing method of a straddle-type monorail tension support provided by another embodiment of the invention, fig. 3 is a schematic diagram illustrating anchor rod replacing, and fig. 4 is a side view of fig. 3.

An anchor rod replacing method of a straddle-type monorail tension support provided by an embodiment of the invention is shown in figure 1 and comprises the following steps:

step S100: the fixing of the support lower hem 2 and the cover beam 1 is released;

step S200: jacking one end of a track beam 5 above the support lower hem 2 to a preset height;

step S300: taking out the anchor rod 6 to be replaced from the position between the lower part of the support lower hem 2 and the cover beam 1 and installing a new anchor rod 6;

step S400: the rail beam 5 is reset and the support skirt 2 is fixed relative to the lid beam 1.

The core of the anchor rod replacing method lies in that one end of a track beam 5 is jacked, a support upper hem 4 below a corresponding end is driven, and a support lower hem 2 with the broken anchor rod 6 is lifted synchronously, so that the support lower hem 2 is separated from a cover beam 1 and is kept suspended relative to the cover beam 1, the force is directly applied to the broken anchor rod 6 in an operation space between the support lower hem 2 and the cover beam 1 conveniently, the broken anchor rod 6 in an anchor box 12 is removed, the anchor rod 6 is replaced, the track beam 5 is reset at last, and the support lower hem 2 and the cover beam 1 are fixed, the stability of the straddle type single-rail tension support is ensured, and the safety of the straddle type single-rail operation is further ensured.

In the above embodiment, the specific operation of step S100 is to remove the fastening nuts 61 and the locknuts 62 on all the anchor rods 6 of the support skirt 2 in which the anchor rods 6 are broken, thereby releasing the connection fixation between the fabricated skirt and the capping beam 1, and ensuring that the support skirt 2 can be lifted up along with the track beam 5 when the track beam 5 is lifted up. In addition, as the capping beam 1 is further provided with the shear tenon 3, and the wedge block is arranged between the shear tenon 3 and the support lower hem 2 to limit the longitudinal and transverse displacement of the support lower hem 2 along the capping beam 1, the wedge block needs to be removed when the support lower hem 2 is released from being fixed with the capping beam 1.

It is worth mentioning that the track beam 5 is supported by two straddle type single track tension supports together, when replacing the anchor rod 6 of one group of straddle type single track tension supports, only the fixation between the straddle type single track tension support at the end and the cover beam 1 needs to be removed, and the connection between the straddle type single track tension support at the other end and the cover beam 1 is kept unchanged.

In order to avoid interference with the adjacent track beam 5 when the track beam 5 is jacked, the step S200 is preceded by removing joint plates at walking surfaces, stabilizing surfaces, guide surfaces and the like at two ends of the track beam 5 to be jacked, and removing the stabilizing surfaces and the joint plates at the guide surfaces at the adjacent ends of the adjacent track beam 5 and the track beam 5 to be jacked.

When step S200 is executed to lift one end of the track beam 5, this application specifically adopts two sets of jacking devices, be first jacking device 10 and second jacking device 11 respectively, first jacking device 10 adopts the jack, the jack setting is in the tenon 3 that shears or bent cap 1 top of treating the jacking end, second jacking device 11 specifically then adopts screw rod supporting device, screw rod supporting device includes the supporting body and the trapezoidal screw rod of screwing in with the supporting body screw thread, through rotatory trapezoidal screw rod, make the trapezoidal screw rod support body relatively rise. The screw support means are normally arranged below the middle of the track beam 5 and preferably in two groups, one left and one right, to avoid overturning of the track beam 5.

When the track beam 5 is jacked, firstly, a jack is pressed to drive the jacking end of the track beam 5 to ascend, when the jack reaches the stroke constraint, the trapezoidal screw is rotated to contact and support the bottom of the track beam 5, then the jack is decompressed, and after decompression, a cushion block can be arranged at the top end or the bottom end of the jack to drive the jack to jack the track beam 5 again. The jacking stroke limitation of the jacking device is eliminated by alternately jacking the first jacking device 10 and the second jacking device 11 and arranging the second jacking device 11 on the support and the cushion block of the track beam 5. And repeating the operation until the jacking amount of the track beam 5 reaches 230mm, and stopping jacking when the broken anchor rod 6 can be taken out.

Step S300 is then executed to remove the broken anchor 6 from between the pedestal skirt 2 and the lid beam 1, and then to insert a new anchor 6. During the replacement of the anchor rods 6, the first jacking device 10 and the second jacking device 11 simultaneously support the track beam 5, so that the safety of constructors in the construction process is guaranteed.

And finally, resetting the track beam 5 according to the step S400, and simultaneously re-fixing the support lower hem 2 and the cover beam 1. The process that track roof beam 5 resets and the process that track roof beam 5 jacked are just opposite, at first rotatory trapezoidal screw, make trapezoidal screw descend preset height, then slowly release the pressure to the jack, and trapezoidal screw supports track roof beam 5 again, and the top of jack keeps the clearance that is greater than 10mm with the bottom surface of track roof beam 5 after the pressure release to take out the cushion. Then the jack is driven to rise to contact the bottom surface of the track beam 5, the trapezoidal screw is rotated to be separated from the track beam 5, then the jack is relieved again, and the operation … … is repeated until the track beam 5 is reset. The first jacking device 10 and the second jacking device 11 are controlled alternately to support the track beam 5 to descend, so that the safety of the construction process is guaranteed; meanwhile, the stroke limitation of the first jacking device 10 and the second jacking device 11 is solved by matching with the cushion blocks, and then all joint plates are installed and recovered on the corresponding end faces of the track beam 5. After the track beam 5 falls back to the installation position, the fastening nut 61 and the locknut 62 are reused to match the anchor rod 6 to fix the support lower hem 2 relative to the cover beam 1, and then the wedge blocks are driven into the space between the support lower hem 2 and the shear resistant tenon 3 again.

In another embodiment of the present application, in order to improve the safety of the construction process and prevent the track beam 5 from laterally shifting or even toppling during the jacking or falling process, as shown in fig. 2 to 4, the anchor rod replacing method further includes a step S110 before jacking the track beam 5, wherein a limiting device 8 is installed on two side surfaces of the adjacent track beam 5 of the track beam 5 to be jacked, the limiting device 8 extends and fits towards the side surface of the track beam 5 to be jacked, and the track beam 5 to be jacked is laterally limited to avoid lateral shifting.

This application further sets up fixed plate 7 in stop device 8's the outside, utilizes the protection piece 9 of preventing falling to connect fixed plate 7 simultaneously, and the protection piece 9 of preventing falling specifically can adopt the member, and fixed plate 7 and second jacking device 11 are connected respectively to the both ends of member, play protection fixed action to second jacking device 11, avoid second jacking device 11 to fall.

It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The anchor rod replacing method of the straddle-type monorail tension support provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.