Bridge erecting machine structure modification and T-beam erecting method suitable for large slope working conditions

Abstract

This invention discloses a structural modification method for bridge erecting machines and a T-beam erection method adapted to steep slope conditions, comprising: arranging signal transmitters and receivers; using a beam transport vehicle to transport the front end of the T-beam to the position of the front crane; simultaneously lowering the hoisting ropes of the front and rear cranes of the bridge erecting machine, at which point the front end of the T-beam is lifted by the front and rear cranes, while the rear end of the T-beam remains fixed on the beam transport vehicle; simultaneously starting the front, rear, and beam transport vehicles to move the T-beam forward; after the T-beam begins to move forward, unloading the hoisting ropes from the rear crane and keeping the rear crane stationary, while the front and beam transport vehicles continue to transport the T-beam forward; when the longitudinal horizontal distance between the bearing pad and the No. 0 outrigger... d l1 Equal to the horizontal longitudinal distance between the support position of the T-beam and the No. 0 support leg d l3 At this point, the T-beam body has been longitudinally moved into position, and lateral adjustment begins; when the lateral horizontal distance between the T-beam body and the support pad is... d t When the value is 0, the T-beam body is moved laterally into position. At this time, the alignment of the T-beam body is completed, and the lowering of the beam begins.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of bridge erecting machine, and particularly relates to a bridge erecting machine structure reconstruction and T beam erecting method suitable for large slope working conditions. BACKGROUND

[0002] In recent years, with the development of high-speed rail construction to southeast coastal areas and western mountainous areas, the erection of bridges in these areas often encounters large slope working conditions, and the traditional transport-erecting separated bridge erecting machine and transport-erecting integrated machine cannot meet the needs of bridge erection under such working conditions.

[0003] Therefore, there is a need for a bridge erecting machine structure reconstruction and T beam erecting method suitable for large slope working conditions to solve the above problems. SUMMARY

[0004] The present application aims to provide a bridge erecting machine structure reconstruction and T beam erecting method suitable for large slope working conditions to solve the problems of the prior art, which realizes T beam erection under large slope working conditions by reconstructing the structure of the bridge erecting machine and monitoring the transverse and longitudinal positions of the T beam body.

[0005] The object of the present application is achieved by the following technical solutions:

[0006] A bridge erecting machine structure reconstruction and T beam erecting method suitable for large slope working conditions, characterized in that the method comprises the following steps:

[0007] (S1) A signal transmitter A1 is installed on the 0th support leg of the bridge erecting machine, and a signal transmitter A2 is installed on the front trolley of the bridge erecting machine, both of which are located on the center line of the bottom surface of the main beam of the bridge erecting machine; a signal receiver B1 is installed on the top surface center line of the T beam body to be erected and located directly below the hoisting point of the front trolley, a signal receiver B2 is installed at the middle position of the top of the front end cross section of the T beam body to be erected, and a signal receiver B3 and a signal receiver B4 are installed at the centers of the two support cushion stones on the rear side of the pier; a signal receiver B5, a signal receiver B7 and a signal receiver B6 are installed in the transverse direction on the front side of the pier in sequence, the signal receiver B7 is located directly below the 0th support leg, and the connecting lines of the signal receiver B5 and the signal receiver B6 and the connecting lines of the signal receiver B3 and the signal receiver B4 are both horizontal lines; the height of the support cushion stone h and the distance between the support position of the T beam body to be erected and the front end cross section of the T beam body to be erected y 0 are determined.

[0008] (S2) using the beam truck to transport the T-beam body front end to the front trolley position, the front trolley and the rear trolley of the bridge girder machine are simultaneously lowered, at this time the T-beam body front end is lifted by the front trolley and the rear trolley, and the T-beam body rear end is still fixed on the beam truck; simultaneously starting the front trolley, the rear trolley and the beam truck, making the T-beam body forward, after the T-beam body starts to move forward, the hoisting rope of the rear trolley is unloaded and the rear trolley is kept stationary, and the T-beam body is continuously transported forward by the front trolley and the beam truck; wherein the height of the No. 1 support leg of the bridge girder machine is adjusted to ensure that the main beam of the bridge girder machine is horizontal during construction.

[0009] (S3) when the longitudinal horizontal distance between the support cushion stone and the No. 0 support leg d l1 is equal to the longitudinal horizontal distance between the support position of the T-beam body and the No. 0 support leg d l3 , it indicates that the T-beam body is longitudinally moved to the position, and the transverse adjustment is started; when the transverse horizontal distance between the T-beam body and the support cushion stone d t is 0, it indicates that the T-beam body is transversely moved to the position, at this time the T-beam body is aligned and the beam is started to be lowered.

[0010] The calculation formula of the transverse horizontal distance between the T-beam body and the support cushion stone d t is:

[0011] ;

[0012] In the formula, x 3 is the distance measured by the signal receiver B6 receiving the transmission signal of the signal transmitter A1, x 2 is the distance measured by the signal receiver B7 receiving the transmission signal of the signal transmitter A1.

[0013] The calculation formula of the longitudinal horizontal distance between the support cushion stone and the No. 0 support leg d l1 is:

[0014] ;

[0015] In the formula, x 1 is the distance measured by the signal receiver B4 receiving the transmission signal of the signal transmitter A1.

[0016] The calculation formula of the longitudinal horizontal distance between the support position of the T-beam body and the No. 0 support leg d l3 is:

[0017] ;

[0018] ;

[0019] In the formula, y 1 is the distance measured by the signal receiver B2 receiving the signal transmitter A1, y 2 is the distance measured by the signal receiver B1 receiving the signal transmitter A2, d l2 The longitudinal horizontal distance between the cross section of the T-beam body front end and the No.

[0020] The No. 1 leg of the bridge erecting machine comprises, from bottom to top, an adjusting section, a telescopic basic section, a guide column I, a guide column II and a guide column III, the telescopic basic section is composed of a primary guide column, a secondary guide column and a guide sleeve, the primary guide column is installed in the secondary guide column and moves along the length direction of the secondary guide column, the secondary guide column is installed in the guide sleeve and moves along the length direction of the guide sleeve, the guide sleeve is connected with the adjusting section, the guide column III is installed in the guide column II and moves along the length direction of the guide column II, the guide column II is installed in the guide column I and moves along the length direction of the guide column I, the bottom of the adjusting section is connected with a running mechanism, the top of the guide column III is connected with a transverse moving frame, and the guide column I is fixed through a fixing mechanism.

[0021] The advantage of the present application is that the T-beam erection under large slope conditions is realized by reforming the structure of the bridge erecting machine and monitoring the transverse and longitudinal positions of the T-beam body. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a front view of the present application when erecting a T-beam;

[0023] Figure 2 It is a top view of the present application when erecting a T-beam;

[0024] Figure 3 It is a side view of the present application when erecting a T-beam;

[0025] Figure 4 It is a side view of the No. 1 leg before reforming;

[0026] Figure 5 It is a front view of the No. 1 leg before reforming;

[0027] Figure 6 It is a side view of the primary guide column of the telescopic basic section of the present application;

[0028] Figure 7 It is a front view of the primary guide column of the telescopic basic section of the present application;

[0029] Figure 8 This is a side view of the secondary guide post of the retractable basic section of the present invention;

[0030] Figure 9 This is a front view of the secondary guide post of the retractable basic section of the present invention;

[0031] Figure 10 This is a side view of the guide sleeve of the retractable basic section of the present invention;

[0032] Figure 11 This is a front view of the guide sleeve of the retractable basic section of the present invention;

[0033] Figure 12 This is a schematic diagram of the retractable basic section of the present invention at its minimum height;

[0034] Figure 13 This is a schematic diagram (a) of the retractable basic section of the present invention at its intermediate height.

[0035] Figure 14 This is a schematic diagram (II) of the retractable basic section of the present invention at the intermediate height.

[0036] Figure 15 This is a schematic diagram of the retractable basic section of the present invention at its maximum height. Detailed Implementation

[0037] The features and other related features of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate understanding by those skilled in the art:

[0038] like Figures 1-15 As shown in the figure, the markings represent: 1. Main beam, 2. T-beam body, 3. Pier, 4. Bearing pad, 5. Bearing position, 6. Adjusting section, 7. Basic section, 8. Guide column I, 9. Guide column II, 10. Guide column III, 11. Traveling mechanism, 12. Lateral frame, 13. Fixing mechanism, 14. Telescopic basic section, 15. Primary guide column, 16. Secondary guide column, 17. Guide sleeve.

[0039] Example: Figures 1-15 As shown, this embodiment specifically relates to a method for modifying the structure of a bridge erecting machine and erecting T-beams to adapt to steep slope conditions. The method specifically includes the following steps:

[0040] (S1) Preparation: install signal transmitter A1 on the 0th support leg of the bridge girder erection machine, install signal transmitter A2 on the front trolley of the bridge girder erection machine, both the signal transmitter A1 and the signal transmitter A2 are located on the center line of the bottom surface of the main beam 1 of the bridge girder erection machine; install signal receiver B1 on the top surface center line of the T-beam body 2 to be erected, and the signal receiver B1 is located directly below the hoisting point of the front trolley, install signal receiver B2 at the middle position of the top of the front end cross section of the T-beam body 2 to be erected, install signal receiver B3 and signal receiver B4 at the center of the two support cushion stones 4 on the rear side of the pier 3 respectively, install signal receiver B5, signal receiver B7 and signal receiver B6 on the front side of the pier 3 in turn in the transverse direction, the signal receiver B7 is located directly below the 0th support leg, and the connecting line of the signal receiver B5 and the signal receiver B6 and the connecting line of the signal receiver B3 and the signal receiver B4 are both horizontal lines; determine the height of the support cushion stone 4 h and the distance between the support position 5 of the T-beam body 2 to be erected and the front end cross section of the T-beam body 2 to be erected y 0.

[0041] (S2) Beam delivery: use the beam transport vehicle to transport the front end of the T-beam body 2 to the position of the front trolley, lower the hoisting ropes of the front trolley and the rear trolley of the bridge girder erection machine at the same time, at this time the front end of the T-beam body 2 is hoisted by the front trolley and the rear trolley, and the rear end of the T-beam body 2 is still fixed on the beam transport vehicle; start the front trolley, the rear trolley and the beam transport vehicle at the same time, make the T-beam body 2 move forward, after the T-beam body 2 starts to move forward, the hoisting ropes of the rear trolley are released and the rear trolley remains stationary, and the T-beam body 2 is continuously transported forward by the front trolley and the beam transport vehicle.

[0042] Among them, the height of the 1st support leg of the bridge girder erection machine is adjusted to ensure that the main beam 1 of the bridge girder erection machine is horizontal during construction. As shown in Figures 4-15 , the 1st support leg before transformation includes adjustment section 6, basic section 7, guide column I 8, guide column II 9 and guide column III 10 arranged in turn from bottom to top, in this embodiment, the basic section 7 is transformed to obtain telescopic basic section 14, the telescopic basic section 14 is composed of first level guide column 15, second level guide column 16 and guide sleeve 17, the first level guide column 15 is installed in the second level guide column 16 and moves along the length direction of the second level guide column 16, the second level guide column 16 is installed in the guide sleeve 17 and moves along the length direction of the guide sleeve 17, the guide sleeve 17 is connected with the adjustment section 6, the guide column III 10 is installed in the guide column II 9 and moves along the length direction of the guide column II 9, the guide column II 9 is installed in the guide column I 8 and moves along the length direction of the guide column I 8, the bottom of the adjustment section 6 is connected with the running mechanism 11, the top of the guide column III 10 is connected with the transverse moving frame 12, the guide column I 8 is fixed by the fixing mechanism 13, thereby realizing the stepwise lengthening or shortening adjustment of the height of the 1st support leg of the bridge girder erection machine under large slope working condition, and ensuring that the main beam of the bridge girder erection machine is horizontal during construction.

[0043] (S3) Beam falling: when the longitudinal horizontal distance between the abutment cushion stone 4 and the No. 0 support leg d l1 is equal to the longitudinal horizontal distance between the abutment position of the T-beam beam body 2 and the No. 0 support leg d l3 , it indicates that the T-beam beam body 2 is longitudinally positioned, and the transverse adjustment begins; when the transverse horizontal distance between the T-beam beam body 2 and the abutment cushion stone 4 d t is 0, it indicates that the T-beam beam body 2 is transversely positioned, and at this time the T-beam beam body 2 is positioned, and the beam falling begins.

[0044] The calculation formula of the transverse horizontal distance between the T-beam beam body 2 and the abutment cushion stone d t is:

[0045] ;

[0046] In the formula, x 3 is the distance measured by the signal receiver B6 (signal receiver B5) receiving the transmission signal of the signal transmitter A1, x 2 is the distance measured by the signal receiver B7 receiving the transmission signal of the signal transmitter A1.

[0047] The calculation formula of the longitudinal horizontal distance between the abutment cushion stone 4 and the No. 0 support leg d l1 is:

[0048] ;

[0049] In the formula, x 1 is the distance measured by the signal receiver B4 (signal receiver B3) receiving the transmission signal of the signal transmitter A1.

[0050] The calculation formula of the longitudinal horizontal distance between the abutment position of the T-beam beam body 2 and the No. 0 support leg d l3 is:

[0051] ;

[0052] ;

[0053] In the formula, y 1 is the distance measured by the signal receiver B2 receiving the transmission signal of the signal transmitter A1, y 2 is the distance measured by the signal receiver B1 receiving the transmission signal of the signal transmitter A2, d l2 is the longitudinal horizontal distance between the front end cross section of the T-beam beam body 2 and the No. 0 support leg.

[0054] The embodiment has the beneficial effects that the T-beam erecting under large slope condition is realized by modifying the structure of the bridge erecting machine and monitoring the transverse and longitudinal positions of the T-beam body.

[0055] Although the above embodiments have been described in detail with reference to the accompanying drawings, those skilled in the art can recognize that various improvements and changes can be made to the present application without departing from the scope defined by the claims, and therefore, detailed description is not given here.

Claims

1. A method for modifying the structure of a bridge girder erection machine and erecting a T-beam suitable for steep slope working conditions, characterized in that The method comprises the following steps: (S1) installing a signal transmitter A1 on the 0# support leg of the bridge girder erection machine, a signal transmitter A2 on the front trolley of the bridge girder erection machine, both of which are located on the center line of the bottom surface of the main girder of the bridge girder erection machine; installing a signal receiver B1 on the top surface center line of the T-beam body to be erected, which is located directly below the hoisting point of the front trolley, installing a signal receiver B2 at the middle position of the top of the front end cross section of the T-beam body to be erected, installing a signal receiver B3 and a signal receiver B4 at the center of the two support cushion stones on the rear side of the pier, installing a signal receiver B5, a signal receiver B7 and a signal receiver B6 on the front side of the pier in the transverse direction in sequence, the signal receiver B7 being located directly below the 0# support leg, the line connecting the signal receiver B5 and the signal receiver B6 and the line connecting the signal receiver B3 and the signal receiver B4 both being horizontal lines; determining the height of the support cushion stone h and the distance between the support position of the T-beam body to be erected and the front end cross section of the T-beam body to be erected y 0; (S2) using the beam truck to transport the front end of the T-beam body to the front trolley position, the front trolley and the rear trolley of the bridge girder launching machine are simultaneously lowered, at this time the front end of the T-beam body is lifted by the front trolley and the rear trolley, and the rear end of the T-beam body is still fixed on the beam truck; meanwhile, the front trolley, the rear trolley and the beam truck are started to make the T-beam body move forward, after the T-beam body starts to move forward, the lifting rope of the rear trolley is unloaded and the rear trolley is kept stationary, and the T-beam body is continuously transported forward by the front trolley and the beam truck; wherein the height of the No. 1 support leg of the bridge girder launching machine is adjusted to ensure that the main beam of the bridge girder launching machine is horizontal during construction; (S3) When the abutment pad is longitudinally horizontally distanced from the No. 0 support leg d l1 equal to the abutment position of the T-beam body and the No. 0 support leg longitudinal horizontal distance d l3 , it indicates that the T-beam body is longitudinally moved into position, and the transverse adjustment is started; when the T-beam body is transversely horizontally distanced from the abutment pad d t 0, it indicates that the T-beam body is transversely moved into position, at this time, the T-beam body is aligned, and the beam falling is started.

2. The method according to claim 1, wherein The horizontal distance between the T-beam body and the abutment cushion stone d t The calculation formula is: ； wherein x 3 is the distance measured by the signal receiver B6 receiving the transmitted signal of the signal transmitter A1, x 2 is the distance measured by the signal receiver B7 receiving the transmitted signal of the signal transmitter A1.

3. The method according to claim 2, wherein The support padstone is longitudinally horizontally distanced from the 0-leg d l1 The calculation formula is: ； In the formula, x 1 is the distance measured by the signal receiver B4 from the signal transmitter A1.

4. The method according to claim 3, wherein The support position of the T-beam body is longitudinally horizontally distanced from the No. 0 support leg d l3 The calculation formula is: ； ； In the formula, y 1 is the distance measured by the signal receiver B2 receiving the signal transmitter A1, y 2 is the distance measured by the signal receiver B1 receiving the signal transmitter A2, d l2 is the longitudinal horizontal distance between the cross section of the front end of the T-beam body and the No. 0 leg.

5. The method of claim 1, wherein The No. 1 support leg of the bridge girder launching machine comprises an adjusting section, a telescopic basic section, a guide column I, a guide column II and a guide column III arranged in sequence from bottom to top, the telescopic basic section is composed of a first guide column, a second guide column and a guide sleeve, the first guide column is installed in the second guide column and moves along the length direction of the second guide column, the second guide column is installed in the guide sleeve and moves along the length direction of the guide sleeve, the guide sleeve is connected with the adjusting section, the guide column III is installed in the guide column II and moves along the length direction of the guide column II, the guide column II is installed in the guide column I and moves along the length direction of the guide column I, the bottom of the adjusting section is connected with a running mechanism, the top of the guide column III is connected with a transverse moving frame, and the guide column I is fixed by a fixing mechanism.

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