Monorail traffic PC beam support repairing method

Abstract

The embodiment of the present disclosure relates to a monorail traffic PC beam support repairing method. The method comprises the following steps: measuring the peripheral coordinate relationship of a fixed PC beam support to be repaired, and determining a repairing value of the fixed PC beam support to be repaired according to the peripheral coordinate relationship; four sets of support assemblies are arranged between the opposite surfaces of the upper swing and the lower swing of the fixed PC beam support to be repaired respectively, so as to facilitate the subsequent repairing of the fixed PC beam support; wherein the state of each set of support assembly comprises a force action state and a non-action state, and the initial state of each set of support assembly is the non-action state; and the track beam and the turnout beam on the repaired fixed PC beam support are in the same horizontal plane by adjusting each set of support assembly according to the repairing value. The embodiment of the present disclosure can repair the fixed PC beam support that appears to be shaking, and realize that the track beam and the turnout beam on the repaired fixed PC beam support are in the same horizontal plane.

Description

Technical Field

[0001] This disclosure relates to the field of rail transit technology, and in particular to a method for repairing PC beam supports for monorail transit. Background Technology

[0002] With the rapid development of straddle-type monorail transit, some urban straddle-type monorail lines (such as the straddle-type monorail lines in Chongqing) are already operating beyond their capacity. Moreover, design flaws in the existing lines have gradually become apparent after nearly 20 years of operation, maintenance, and testing, posing extremely severe operational and maintenance pressures on the existing lines.

[0003] In related technologies, PC beam supports are mechanical devices that connect and transmit forces between track beams and cap beams, and meet the requirements for vertical support and longitudinal free expansion and contraction of the beam. Their reliability plays a decisive role in the safe operation of the track. This device consists of an upper swing arm, a lower swing arm, a base plate, and tension connectors, and is divided into two main categories: fixed supports and movable supports. Fixed supports are equipped with hinges to allow the beam to rotate vertically around the hinge, while movable supports are equipped with rollers that, in addition to allowing the beam to rotate vertically around the rollers, also accommodate the beam's longitudinal free expansion and contraction. In recent years, a small number of transitional fixed PC beam supports connected to turnouts have been found to exhibit swaying on existing tracks, and this problem is becoming increasingly serious.

[0004] Therefore, it is necessary to improve one or more of the problems existing in the above-mentioned related technical solutions.

[0005] It should be noted that this section is intended to provide background or context for the technical solutions of this disclosure as set forth in the claims. The description herein does not constitute an admission that it is prior art simply because it is included in this section. Summary of the Invention

[0006] The purpose of this disclosure is to provide a method for repairing PC beam supports in monorail transit, thereby overcoming, to at least to some extent, one or more problems caused by limitations and defects in related technologies.

[0007] A method for repairing PC beam supports for monorail transit according to an embodiment of this disclosure includes:

[0008] Measure the peripheral coordinate relationship of the fixed PC beam support to be repaired, and determine the repair value of the fixed PC beam support to be repaired based on the peripheral coordinate relationship.

[0009] Four sets of support components are respectively installed between the upper and lower surfaces of the fixed PC beam support to be repaired, so as to facilitate the subsequent repair of the fixed PC beam support; wherein, the state of each set of support components includes a stressed state and an unstressed state, and the initial state of each set of support components is an unstressed state.

[0010] Based on the repair value, each set of the support components is adjusted so that the track beam and turnout beam on the repaired fixed PC beam support are on the same horizontal plane.

[0011] In one embodiment of this disclosure, measuring the peripheral coordinate relationship of the fixed PC beam support to be repaired, and determining the repair value of the fixed PC beam support to be repaired based on the peripheral coordinate relationship, includes:

[0012] The first horizontal difference between the track beam and the turnout beam corresponding to the fixed PC beam support to be repaired, the second horizontal difference between the track beam corresponding to the fixed PC beam support to be repaired and its adjacent track beam, the wear value of the inner hole of the upper swing, and the wear value of the inner hole of the lower swing are measured respectively. Based on the first horizontal difference, the second horizontal difference, the wear value of the inner hole of the upper swing, and the wear value of the inner hole of the lower swing, the repair value is calculated by layout.

[0013] In one embodiment of this disclosure, the step of respectively setting four sets of support components between the opposite faces of the upper and lower swings in the fixed PC beam to be repaired includes:

[0014] The opposing surfaces of the upper and lower swing arms in the fixed PC beam support to be repaired are cleaned and ground to remove the galvanized surface.

[0015] In one embodiment of this disclosure, each set of the support components is fixed to the opposite surfaces of the upper and lower swing arms by welding.

[0016] In one embodiment of this disclosure, each set of support components includes a top cover, a top rod, and a nut. The top cover is fixed to the upper swing arm by welding, and the nut is fixed to the lower swing arm by welding. The top of the top rod matches the top cover, and the threaded section of the top rod matches the nut.

[0017] In one embodiment of this disclosure, the force-bearing state of the support component is the state when the top of the top rod is in contact with the top cover;

[0018] The non-functional state of the support component is when the top rod is not in contact with the top cover.

[0019] In one embodiment of this disclosure, the top of the push rod, the threaded section of the push rod, and the inner top surface of the top cover are respectively coated with lubricant.

[0020] In one embodiment of this disclosure, after the welding between the top cover and the upper helix, and between the nut and the lower helix, is completed and cooled, titanium silver plating is applied to the corresponding weld seams.

[0021] In one embodiment of this disclosure, the step of adjusting each set of the support components according to the repair value so that the track beam and the turnout beam on the repaired fixed PC beam support are on the same horizontal plane includes:

[0022] Jacks are installed on both sides of the fixed PC beam support to be repaired and lifted to the position corresponding to the repair value. Then, each set of support components is adjusted so that the top vertex of each set of support components contacts the corresponding top cover, and fastener is added to the joint between the nut and the top rod.

[0023] In one embodiment of this disclosure, when the repaired fixed PC beam support needs to be repaired again, the position of the fastener is heated to a preset temperature to disable the fastening effect of the fastener. Then, each set of support components is readjusted. After the adjustment is completed, the fastener is applied to the joint between the nut and the top rod.

[0024] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0025] In the embodiments of this disclosure, the repair value of the fixed PC beam support is determined based on the surrounding relationship using the above method. Four sets of support components are then installed between the opposite faces of the upper and lower swing sides of the fixed beam support to be repaired. This allows construction personnel to adjust each set of support components according to the repair value, ensuring that the track beam and turnout beam on the repaired fixed PC beam support are on the same horizontal plane. This method, through the installed support components, eliminates the need to replace the PC beam support when repairing a swaying fixed PC beam support, saving labor and machinery costs associated with replacement. Furthermore, after the initial installation on a swaying fixed PC beam support, it can be used continuously, reducing the overall maintenance cost of the line. The method is also simple to operate, unrestricted by environmental conditions, and requires relatively low skill levels from construction personnel. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0027] Figure 1 This diagram illustrates the steps of a method for repairing PC beam supports in monorail transit according to an exemplary embodiment of the present disclosure.

[0028] Figure 2 This diagram illustrates the location of the fixed PC beam support in the relevant technology of this disclosure;

[0029] Figure 3 This diagram illustrates the structure of the fixed PC beam support in the relevant technology of this disclosure;

[0030] Figure 4 This diagram illustrates the grinding and removal of the galvanized layer from the upper swing of the fixed PC beam support in an exemplary embodiment of this disclosure.

[0031] Figure 5 This is a front view of the lower end of the fixed PC beam support in an exemplary embodiment of this disclosure;

[0032] Figure 6 The right view shows the lower end of the fixed PC beam support in an exemplary embodiment of this disclosure;

[0033] Figure 7 This diagram illustrates the grinding and removal of the galvanized layer from the lower edge of the fixed PC beam support in an exemplary embodiment of this disclosure.

[0034] Figure 8 A schematic diagram showing the installation position of the support components in an exemplary embodiment of this disclosure is provided.

[0035] Figure 9 This diagram illustrates a support component under stress in an exemplary embodiment of the present disclosure.

[0036] Figure 10 This diagram illustrates a support component in a non-functional state in an exemplary embodiment of this disclosure.

[0037] Figure 11 This shows a front view of the nut in an exemplary embodiment of this disclosure;

[0038] Figure 12 A top view of a nut in an exemplary embodiment of this disclosure is shown;

[0039] Figure 13 This shows a front view of the top rod in an exemplary embodiment of this disclosure;

[0040] Figure 14 A bottom view of the push rod in an exemplary embodiment of this disclosure is shown;

[0041] Figure 15 This shows a front view of the top cover in an exemplary embodiment of this disclosure;

[0042] Figure 16 A top view of the top cover is shown in an exemplary embodiment of this disclosure;

[0043] Figure 17 A schematic diagram showing the adjustment state of the fixed PC beam support in an exemplary embodiment of this disclosure is provided.

[0044] Figure 18This diagram illustrates the state of the fixed PC beam support after repair in an exemplary embodiment of this disclosure.

[0045] In the diagram: 100, fixed PC beam support; 110, upper swing arm; 111, first galvanized surface; 120, lower swing arm; 121, inner hole of the lower swing arm; 122, second galvanized surface; 130, hinge shaft; 200, track beam; 300, turnout beam; 400, base; 500, support assembly; 510, top cover; 520, top rod; 530, nut; 600, jack. Detailed Implementation

[0046] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0047] Furthermore, the accompanying drawings are merely illustrative diagrams of embodiments of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0048] In related technologies, some urban rail transit systems (such as Chongqing Rail Transit Line 3) have experienced problems with more than ten sets of fixed PC beam supports loosening and causing PC beam swaying. The main reasons are as follows: Figure 2 and Figure 3 As shown, the fixed PC beam support 100 is set on the base 400, and the upper swing 110 of the fixed PC beam support 100 is cast into the track beam 200. The PC beams (i.e., track beams 300) supported by the fixed PC beam support 100 that cooperate with the turnout beam 300 are all non-standard length PC beams (standard beam length is 22 meters and weight is 56 tons). They are all short beams within 5 meters and are too light in weight. After the vehicle enters the movable support end of the PC beam, the end is compressed, causing the upper swing 110 of the fixed PC beam support 100, which is connected to the turnout beam, to tilt up along with the track beam 300. After the vehicle has fully entered, the upper swing of the fixed PC beam support 100 sinks down along with the track beam, causing the inner holes of the upper and lower swings 121 that cooperate with the hinge shaft 130 to collide and rub against each other. Over time, the hinge shaft 130 and the inner holes of the upper and lower swings 121 collide and wear for a long time, resulting in the gap between the inner holes of the upper and lower swings becoming larger and larger.

[0049] After the fixed PC beam support 100 is fully assembled at the manufacturer, its upper part is cast into the PC beam (i.e., the track beam) during manufacturing. The hinge shaft 130 of the fixed PC beam support 100 has clearance fits with the inner hole of the upper part and with the inner hole 121 of the lower part, with a designed clearance of 0.02mm-0.05mm. The upper and lower parts are made of ZG275-485H material, with a Rockwell hardness of HRC29-34 after normalizing treatment. The hinge shaft 130 is made of 40Cr material, with a Rockwell hardness of HRC37 after multi-element co-diffusion treatment. After long-term vibration from vehicle traffic, the clearance between the hinge shaft 130 and the inner holes of the upper and lower parts of the support 100 increases. The main wear areas are the inner holes of the upper and lower parts of the support 100 and the hinge shaft 130. If this continues, it will inevitably lead to a collision accident when the switch connected to it is turned, where the joint plate of the switch beam 300 and the track beam 200 collide, posing a safety risk to vehicle traffic.

[0050] Due to the unique nature of light rail line operations, the daily maintenance window is only 3 hours (1:00 AM to 4:00 AM). Replacing the fixed PC beam support 100, which has already become unstable, is practically impossible. Furthermore, even if the maintenance window were extended and the support were replaced, the fixed PC beam support 100 would need to be pre-cast into the PC beam, meaning it would have to be replaced along with the corresponding PC beam, resulting in extremely high repair costs.

[0051] Although only a dozen or so similar cases have been found in some urban light rail lines (such as Chongqing Light Rail Line 3), as the light rail lines operate for longer, the swaying of these fixed PC beam supports 100 will become more and more serious, and the number of fixed PC beam supports 100 of the same structural type will gradually increase.

[0052] Based on this, and to ensure the normal operation of the line, and building upon existing conditions, this example embodiment provides a method for repairing PC beam supports for monorail transit, addressing the issue of swaying caused by excessive wear of the inner holes 121 of the upper and lower swing beams. (Reference) Figure 1 As shown, the method may include:

[0053] Step S101: Measure the peripheral coordinate relationship of the fixed PC beam support to be repaired, and determine the repair value of the fixed PC beam support to be repaired based on the peripheral coordinate relationship.

[0054] Step S102: Four sets of support components are respectively installed between the opposite faces of the upper and lower swings in the fixed PC beam support to be repaired, so as to facilitate the subsequent repair of the fixed PC beam support; wherein, the state of each set of support components includes a stressed state and an unstressed state, and the initial state of each set of support components is an unstressed state.

[0055] Step S103: Adjust each set of the support components according to the repair value so that the track beam and turnout beam on the fixed PC beam support after repair are on the same horizontal plane.

[0056] Using the above method, the repair value of the fixed PC beam support 100 is determined based on its surrounding relationship. Four sets of support components 500 are then installed between the opposite faces of the upper swing 110 and lower swing 120 of the fixed PC beam support 100 to be repaired. This allows construction personnel to adjust each set of support components 500 according to the repair value, ensuring that the track beam 200 and turnout beam 300 on the repaired fixed PC beam support 100 are on the same horizontal plane. This method eliminates the need to replace the fixed PC beam support 100 when repairing it, saving labor and equipment costs associated with replacement. Furthermore, after the initial installation on a swaying fixed PC beam support 100, it can be used continuously, reducing overall track maintenance costs. This method is also simple to operate, unaffected by environmental conditions, and requires relatively low skill levels from construction personnel.

[0057] Below, we will refer to Figures 2 to 18 The various parts of the above-described method for repairing PC beam supports for monorail transit in this exemplary embodiment will be described in more detail.

[0058] In step S101, as Figure 2 and Figure 3 As shown, before repairing the fixed PC beam support 100 to be repaired, it is first necessary to use a total station to measure the surrounding coordinate relationship of the fixed PC beam support 100 to be repaired, and then calculate the repair value based on the surrounding coordinate relationship. Among them, the surrounding coordinate relationship includes: the first horizontal difference between the corresponding track beam 200 and turnout beam 300 on the fixed PC beam support 100 to be repaired, the second horizontal difference between the corresponding track beam 200 on the fixed PC beam support 100 to be repaired and its adjacent track beam 200, the wear value of the inner hole of the upper swing, and the wear value of the inner hole 121 of the lower swing.

[0059] In step S102, as Figure 8As shown, after determining the repair value of the fixed PC beam support 100 to be repaired, four sets of support components 500 are installed between the opposing surfaces of the upper swing 110 and the lower swing 120 of the fixed PC beam support 100. The support components 500 are used to support the upper swing 110 and the lower swing 120 of the fixed PC beam support 100 to be repaired. Figure 9 and Figure 10 As shown, the four sets of support components 500 generally include a stressed state and an unstressed state. Initially, the four sets of support components 500 are in an unstressed state. By adjusting each support component 500 from an unstressed state to a stressed state, the fixed PC beam support 100 can be repaired. Therefore, the four sets of support components 500 not only facilitate the repair of the fixed PC beam support 100 but also reduce wear on the inner holes 121 of the upper and lower swing arms, thus improving the service life of the fixed PC beam support 100.

[0060] In step S103, as Figure 17 As shown, after four sets of support components 500 are set between the upper swing 110 and the lower swing 120 of the fixed PC beam support 100 to be repaired, the construction personnel adjust each set of support components 500 according to the determined repair value so that each set of support components 500 changes from the initial non-functional state to the stressed state, thereby realizing the repair of the fixed PC beam support 100, that is, realizing that the track beam 200 and the turnout beam 300 on the repaired fixed PC beam support 100 are on the same horizontal plane.

[0061] Using the above method, the repair value of the fixed PC beam support 100 is determined based on its surrounding relationship. Four sets of support components 500 are then installed between the opposite faces of the upper swing 110 and lower swing 120 of the fixed beam support to be repaired. This allows construction personnel to adjust each set of support components 500 according to the repair value, ensuring that the track beam 200 and turnout beam 300 on the repaired fixed PC beam support 100 are on the same horizontal plane. This method eliminates the need to replace the fixed PC beam support 100 when repairing a swaying support, saving labor and equipment costs associated with replacement. Furthermore, after the initial installation on a swaying fixed PC beam support 100, it can be used continuously, reducing overall track maintenance costs. This method is also simple to operate, unaffected by environmental conditions, and requires relatively low skill levels from construction personnel.

[0062] In one embodiment, measuring the peripheral coordinate relationship of the fixed PC beam support 100 to be repaired, and determining the repair value of the fixed PC beam support 100 to be repaired based on the peripheral coordinate relationship, includes:

[0063] The first horizontal difference between the track beam 200 and the turnout beam 300 corresponding to the fixed PC beam support 100 to be repaired, the second horizontal difference between the track beam 200 corresponding to the fixed PC beam support 100 to be repaired and its adjacent track beam 200, the wear value of the inner hole of the upper swing, and the wear value of the inner hole 121 of the lower swing are measured respectively. Based on the first horizontal difference, the second horizontal difference, the wear value of the inner hole of the upper swing, and the wear value of the inner hole 121 of the lower swing, the repair value is calculated by layout.

[0064] It is important to understand that when using a total station to measure the peripheral coordinate relationships of the fixed PC beam support 100 to be repaired, specifically, the following measurements are taken: the first horizontal difference between the corresponding track beam 200 and the turnout beam 300 on the fixed PC beam support 100 to be repaired; the second horizontal difference between the corresponding track beam 200 on the fixed PC beam support 100 to be repaired and its adjacent track beam 200; the wear value of the inner hole of the upper swing; and the wear value of the inner hole 121 of the lower swing. After measuring the specific values ​​of the peripheral coordinate relationships, the repair value is calculated and verified by setting out based on the first horizontal difference, the second horizontal difference, the wear value of the inner hole of the upper swing, and the wear value of the inner hole 121 of the lower swing. The repair value calculated and verified by setting out has high accuracy.

[0065] It should be noted that the process of measuring the peripheral coordinate relationship of the fixed PC beam support 100 to be repaired and determining the repair value is recorded as the first operation order.

[0066] In one embodiment, the provision of four sets of support assemblies 500 between the opposite faces of the upper swing 110 and the lower swing 120 in the fixed PC beam to be repaired includes:

[0067] The opposing surfaces of the upper swing 110 and lower swing 120 in the fixed PC beam support 100 to be repaired are cleaned and ground to remove the galvanized surface.

[0068] It is necessary to understand that, such as Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, to facilitate the subsequent welding of the four sets of support components 500 to the upper swing 110 and lower swing 120 of the fixed PC beam support 100 to be repaired, before setting the four sets of support components 500, it is necessary to clean and grind off the galvanized surfaces of the upper swing 110 and lower swing 120 of the fixed PC beam support 100 to be repaired. The galvanized surfaces include the first galvanized surface 111 on the upper swing 110 and the second galvanized surface 122 on the lower swing 120.

[0069] It should be noted that the opposite surfaces of the upper swing 110 and lower swing 120 in the fixed PC beam support 100 to be repaired are cleaned and the galvanized surface is removed by grinding. This process is recorded as the second operation order.

[0070] In one embodiment, each set of the support assembly 500 is fixed to the opposite surfaces of the upper hem 110 and the lower hem 120 by welding.

[0071] It is necessary to understand that, such as Figure 8 As shown, when four sets of support components 500 are set between the upper swing 110 and the lower swing 120 in the fixed PC beam support 100, each set of support components 500 needs to be welded to the opposite surfaces of the upper swing 110 and the lower swing 120 in the fixed PC beam support 100.

[0072] In one embodiment, each set of support components 500 includes a top cover 510, a top rod 520, and a nut 530. The top cover 510 is fixed to the upper swing 110 by welding, and the nut 530 is fixed to the lower swing 120 by welding. The top of the top rod 520 matches the top cover 510, and the threaded section of the top rod 520 matches the nut 530.

[0073] It is necessary to understand that, such as Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 and Figure 16 As shown, each support assembly 500 includes a top cover 510, a top rod 520, and a nut 530. The lower end of the top rod 520 is threaded, meaning the threaded portion of the top rod 520 is a threaded section, which matches the nut 530. The top of the top rod 520 matches the top cover 510. When welding each support assembly 500 to the upper swing 110 and lower swing 120 of the fixed PC beam support 100 to be repaired, specifically, the top rod 520 of each support assembly 500 is welded to the corresponding position of the upper swing 110, and the nut 530 of each support assembly 500 is welded to the corresponding position of the lower swing 120.

[0074] It should be noted that, as Figure 13 and Figure 14 As shown, the top of the top rod 520 is hemispherical. The apex of the top of the top rod 520 in any three of the four support assemblies 500 can form a plane, which does not affect the vertical rotation of the beam around the hinge axis 130 of the fixed PC beam support 100, the connection and force transmission between the track beam 200 and the cap beam, and meets the requirements for vertical support and longitudinal free expansion and contraction deformation of the beam.

[0075] In one embodiment, the force-bearing state of the support component 500 is the state when the top of the top rod 520 contacts the top cover 510;

[0076] The non-functional state of the support component 500 is when the top rod 520 is not in contact with the top cover 510.

[0077] It is necessary to understand that, such as Figure 9 and Figure 10 As shown, when each set of support components 500 is placed between the upper swing 110 and the lower swing 120 of the fixed PC beam support 100 to be repaired, the initial state of each set of support components 500 is a non-functional state, that is, the top of the top rod 520 of each set of support components 500 is in contact with the top cover 510. When it is necessary to repair the fixed PC beam support 100 by adjusting the support components 500, each set of support components 500 needs to be adjusted from the non-functional state to the stressed state. Once each set of support components 500 is adjusted to the stressed state, the repair of the fixed PC beam support 100 can be achieved. In the stressed state, the top rod 520 is not in contact with the top cover 510.

[0078] It should be noted that the nut 530, the top rod 520 and the top cover 510 are all made of 40Cr steel, heat-treated to HRC26-32, and the outer surface needs to undergo low-temperature multi-element co-diffusion heat treatment. The compound layer depth is 15-20μm, the compound layer hardness is ≥530HB, and the total infiltration layer is not less than 0.3mm.

[0079] In one embodiment, the top of the push rod 520, the threaded section of the push rod 520, and the inner top surface of the top cover 510 are respectively coated with lubricant.

[0080] It should be understood that, in order to facilitate the installation of each support assembly 500, lubricant needs to be applied to the top of the top rod 520, the threaded section of the top rod 520, and the inner top surface of the top cover 510 before the installation of each support assembly 500. Furthermore, the lubricant is a calcium-based grease.

[0081] In one embodiment, after the welding between the top cover 510 and the upper helix 110, and between the nut 530 and the lower helix 120 are completed and cooled, titanium silver plating is applied to the corresponding weld seams.

[0082] It is important to understand that after welding the top cover 510 to the upper swing arm 110 and the nut 530 to the lower swing arm 120 in each support assembly 500, cooling is required. After cooling, titanium silver plating needs to be applied to the weld seams between the top cover 510 and the upper swing arm 110 and between the nut 530 and the lower swing arm 120 in each support assembly 500. Furthermore, the thickness of the titanium silver plating is ≥120μm.

[0083] It should be noted that the process of welding four sets of support components 500 on the polished opposite surfaces of the upper swing 110 and lower swing 120 of the fixed PC beam support 100 to be repaired is recorded as the third work order.

[0084] In one embodiment, adjusting each set of support components 500 according to the repair value to make the track beam 200 on the repaired fixed PC beam support 100 and the turnout beam 300 on the same horizontal plane includes:

[0085] Jacks 600 are installed on both sides of the fixed PC beam support 100 to be repaired, and are lifted to the position corresponding to the repair value. Then, each set of support components 500 is adjusted so that the top vertex of each set of support components 500 contacts the corresponding top cover 510, and fastener is added at the joint between the nut 530 and the top rod 520.

[0086] It is necessary to understand that, such as Figure 17 As shown, the fourth operation is as follows: When adjusting each set of support components 500 according to the repair value, jacks 600 need to be set on both sides of the fixed PC beam support 100 to be repaired. A total station is used to lift them to the positions corresponding to the repair value, and the top rods 520 of each set of support components 500 are rotated so that the top vertex of each set of support components 500 contacts the corresponding top cover 510, i.e., each set of support components 500 is under stress. After the top vertex of each set of support components 500 contacts the corresponding top cover 510, fastener is applied to the joint between the nut 530 and the top rod 520 of each set of support components 500. The fastener facilitates the tightening of the nut 530 and the top rod 520. After the fasteners are applied, the entire repair process is completed.

[0087] In one embodiment, the step of adjusting each set of support components 500 according to the repair value so that the track beam 200 on the repaired fixed PC beam support 100 and the turnout beam 300 are on the same horizontal plane, followed by:

[0088] When the fixed PC beam support 100 that has been repaired needs to be repaired again, the position of the fastener is heated to a preset temperature to disable the fastening effect of the fastener. Then, each set of support components 500 is readjusted. After the adjustment is completed, the fastener is applied to the joint between the nut 530 and the top rod 520.

[0089] It is necessary to understand that, such as Figure 18 As shown, if the repaired fixed PC beam support 100 shakes again, it needs to be repaired again. In this case, simply heat the area with the fastener to a preset temperature; the purpose of heating is to disable the fastener's tightening effect. After the fastener's tightening effect is disabled, adjust each support assembly 500 again according to the method described in the above embodiment, ensuring each support assembly 500 is under load. After adjustment, apply fastener to the connection between the nut 530 and the top rod 520 of each support assembly 500.

[0090] It should be noted that the preset temperature is the temperature at which the fastener will fail, and the preset temperature is at least 90 degrees Celsius. Besides heating, the fastener can also be failed by directly pouring hot water at a temperature of 90 degrees Celsius or higher. This disclosure does not impose any restrictions on this.

[0091] It should be noted that during the actual repair work, construction personnel can carry out the work in multiple on-site operations during designated window periods as needed, so as not to affect the normal operation of the existing lines. It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" in the above description, indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this disclosure.

[0092] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0093] In the embodiments of this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0094] In embodiments of this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0095] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0096] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A method for repairing PC beam supports in monorail transit, characterized in that, include: Measuring the peripheral coordinate relationship of the fixed PC beam support to be repaired, and determining the repair value of the fixed PC beam support to be repaired based on the peripheral coordinate relationship; wherein, measuring the peripheral coordinate relationship of the fixed PC beam support to be repaired and determining the repair value of the fixed PC beam support to be repaired based on the peripheral coordinate relationship includes: The first horizontal difference between the track beam and the turnout beam corresponding to the fixed PC beam support to be repaired, the second horizontal difference between the track beam corresponding to the fixed PC beam support to be repaired and its adjacent track beam, the wear value of the inner hole of the upper swing, and the wear value of the inner hole of the lower swing are measured respectively. Based on the first horizontal difference, the second horizontal difference, the wear value of the inner hole of the upper swing, and the wear value of the inner hole of the lower swing, the repair value is calculated by layout. Four sets of support assemblies are respectively installed between the opposite faces of the upper and lower swing surfaces of the fixed PC beam support to be repaired, to facilitate subsequent repair of the fixed PC beam support; wherein, each set of support assemblies includes a stressed state and an unstressed state, and the initial state of each set of support assemblies is an unstressed state; wherein, the installation of four sets of support assemblies between the opposite faces of the upper and lower swing surfaces of the fixed PC beam to be repaired includes the following prior steps: Clean the opposing surfaces of the upper and lower swing arms in the fixed PC beam support to be repaired, and grind off the galvanized surface. Based on the repair value, each set of the support components is adjusted so that the track beam and turnout beam on the repaired fixed PC beam support are on the same horizontal plane. Each set of the support components is fixed to the opposite surfaces of the upper and lower swing arms by welding. Each set of the support assembly includes a top cover, a top rod, and a nut. The top cover is fixed to the upper swing arm by welding, and the nut is fixed to the lower swing arm by welding. The top of the top rod matches the top cover, and the threaded section of the top rod matches the nut. The force applied to the support component is the state when the top of the top rod is in contact with the top cover; The non-functional state of the support component is when the top rod is not in contact with the top cover.

2. The method for repairing PC beam supports for monorail transit according to claim 1, characterized in that, The top of the top rod, the threaded section of the top rod, and the inner top surface of the top cover are each coated with lubricant.

3. The method for repairing PC beam supports for monorail transit according to claim 1, characterized in that, After the welding between the top cover and the upper helix, and between the nut and the lower helix, is completed and cooled, titanium silver plating is applied to the corresponding weld seams.

4. The method for repairing PC beam supports for monorail transit according to claim 1, characterized in that, The step of adjusting each set of support components according to the repair value to make the track beam and turnout beam on the repaired fixed PC beam support on the same horizontal plane includes: Jacks are installed on both sides of the fixed PC beam support to be repaired and lifted to the position corresponding to the repair value. Then, each set of support components is adjusted so that the top vertex of each set of support components contacts the corresponding top cover, and fastener is added to the joint between the nut and the top rod.

5. The method for repairing PC beam supports for monorail transit according to claim 4, characterized in that, The step involves adjusting each set of support components according to the repair value, so that the track beam and turnout beam on the repaired fixed PC beam support are on the same horizontal plane, followed by: When the fixed PC beam support that has been repaired needs to be repaired again, the position of the fastener is heated to a preset temperature to disable the fastening effect of the fastener. Then, each set of support components is readjusted. After the adjustment is completed, the fastener is applied to the joint between the nut and the top rod.

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