T-shaped beam erecting method

Abstract

The invention relates to a T-shaped beam erecting method, which comprises the following steps that a row of erected T-shaped beams are erected at the rear end of a railway shed tunnel longitudinal beam through a cantilever crane and used for bearing a T-shaped beam to be erected and a T-shaped beam erecting trolley, the T-shaped beam erecting trolley and the T-shaped beam to be erected can respectively walk along a first track and a second track, and all the remaining T-shaped beams are sequentially erected through the T-shaped beam erecting trolley; compared with the problems of long construction time and low construction efficiency caused by the step of arranging a prefabricating site at the top of the shed tunnel to prefabricate the T-shaped beam on site when the T-shaped beam of the railway shed tunnel is erected in the prior art, the T-shaped beam is prefabricated in different places off site, the field prefabricating time is saved, and the T-shaped beam erecting trolley is simple in structure, convenient and rapid to erect and high in construction efficiency. Meanwhile, the transportation and erection processes of the T-shaped beam are also simple and rapid, so that the construction time is shorter and the construction efficiency is higher comprehensively.

Description

Technical Field

[0001] The present invention relates to the technical field of railway protection, and in particular to a method for erecting a T-beam. Background Art

[0002] During railway construction in the mountainous areas of southwest China, the construction process inevitably encountered riverside and mountainous terrain, resulting in the creation of numerous high slopes and steep cliffs. Over time, many of the slope reinforcement measures implemented earlier gradually became ineffective, leading to increasingly severe weathering and deterioration of the slope rock mass. Under the influence of external forces such as rainfall and earthquakes, these hazards can easily trigger geological disasters such as landslides, rockfalls, and mudslides, compromising railway safety. The construction of protective tunnels on operating railway lines is an effective measure to control dangerous rockfalls on the slopes at tunnel entrances and exits and on high cuttings. Tunnel construction involves foundation excavation (column foundations and inner sidewall foundations), concrete installation of columns, longitudinal beams, inner sidewalls, and T-beams. Prior art, such as Chinese patent publication number CN108589568, discloses a method for rapidly constructing T-beams across an operating line tunnel in a narrow space. The method includes setting up a prefabrication site at the top of the tunnel for on-site prefabrication of the T-beams. However, on-site prefabrication of the T-beams involves mold making, steel bar tying, concrete pouring, and curing, resulting in a long construction time and low construction efficiency. Summary of the Invention

[0003] The object of the present invention is to provide a T-beam erection method to address the problem that in the prior art, when erecting T-beams in railway sheds, a prefabrication site is set up on the top of the shed to prefabricate the T-beams on site, resulting in long construction time and low construction efficiency.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is:

[0005] A T-beam erection method, characterized by comprising the following steps:

[0006] a. Lifting a plurality of T-beams from the ground using a lifting device and erecting them on the rear ends of the longitudinal beams to form a row of erected T-beams. Laying a first track and a second track along the longitudinal direction on top of the erected T-beams; extending the front ends of the first track and the second track to the front ends of the erected T-beams; installing a plurality of beam transport trolleys on the second track, lifting a plurality of T-beams from the ground using the lifting device and transferring them to the beam transport trolleys to form a row of T-beams to be erected; setting up a T-beam erection trolley and placing it on the first track in front of the T-beams to be erected;

[0007] Among them, the T-beams are all prefabricated off-site; the T-beam erection trolley includes a main frame, with two sets of legs provided on either side of the main frame, the two sets of legs being arranged opposite to each other in the transverse direction, each set of legs including a first leg, a second leg, a third leg, and a fourth leg arranged in sequence from front to back in the longitudinal direction, all of which are vertically retractable, and all of which have rail wheels installed at their bottoms; a first hoist is provided between the first leg and the second leg of each set of legs, and a second hoist is provided between the third leg and the fourth leg, and both the first hoist and the second hoist are provided on the main frame; the rail wheels are placed on the first rail;

[0008] b. The fourth leg of the T-beam erection trolley is retracted to raise its track wheel, and a T-beam to be erected is moved between the third and fourth legs by the beam transport trolley. Then the fourth leg is extended to lower its track wheel until it is placed on the first track;

[0009] c. The second and third legs of the trolley are retracted to raise their respective track wheels. The T-beam to be erected between the third and fourth legs is moved to the bottom of the first hoist by the beam transport trolley. Then the second and third legs are extended to lower their respective track wheels until they are placed on the first track.

[0010] d. The fourth leg of the trolley is retracted to raise its track wheel, and the beam transport trolley moves another T-beam to be erected to the bottom of the second hoist. Then the fourth leg is extended to lower its track wheel to be placed on the first track;

[0011] e. The first hoist and the second hoist respectively lift two T-beams to be erected, and then remove the beam transport trolley for the T-beams to be erected under the first hoist;

[0012] f: Move the T-beam lifting trolley forward as a whole until the T-beam to be erected, which is lifted by the first hoist, is directly above its erection position. Then the first hoist lowers the T-beam to be erected to its erection position, thus completing the erection of one T-beam to be erected.

[0013] g: The first hoist rises and resets; the T-beam lifting trolley moves back as a whole to the track wheel of the first leg and is placed on the first track; the second hoist lowers the T-beam to be erected to the beam transport trolley, and then rises and resets;

[0014] h: Use the jacking device to lift the T-beam erection trolley 7 until it is separated from the first track 4, move the first track 4 forward until its end extends to the front end of the erected T-beam 2, and then lower the T-beam erection trolley 7 to the first track 4;

[0015] i: loop step ch until all T-beams 3 to be erected are completed;

[0016] Wherein, each time a plurality of T-beams are erected by the T-beam erection trolley 7 , a section of track is spliced at the front end of the second track 5 , so that the front end of the second track 5 extends to the front end of the erected T-beam 2 .

[0017] The present invention adopts the above-mentioned technical solution, and the T-beams are all prefabricated off-site. After being transported to the site, combined with the above steps, the installation of the T-beam on the top of the railway shed can be realized; at the same time, the designed T-beam installation trolley has a simple structure and is easy and quick to install; the T-beam installation trolley and the T-beam to be installed are respectively free to move longitudinally on the installed T-beam through the first track and the second track, and the T-beam installation trolley can avoid the T-beam to be installed by retracting the legs, making the installation process of the T-beam quick and efficient; compared with the T-beam installation of the railway shed in the prior art, which includes the step of setting up a prefabrication site on the top of the shed for on-site prefabrication of the T-beam, resulting in a long construction time and low construction efficiency, the T-beams of the present invention are all prefabricated off-site, saving on-site prefabrication time, and the T-beam installation trolley has a simple structure and is easy and quick to install. At the same time, the transportation and erection process of the T-beam are also simple and quick, which makes the construction time shorter and the construction efficiency higher.

[0018] Furthermore, while the T-beams are being erected by the T-beam erection trolley, the T-beams are lifted from the ground by the lifting device and transferred to the beam transport trolley to supplement the T-beams to be erected; when the length of the shed hole to be constructed is long and the number of T-beams to be erected lifted by the lifting device in step a is insufficient, it is necessary to continue lifting the T-beams to be erected as a supplement while the T-beams are being erected.

[0019] Furthermore, the first track and the second track are both double-track tracks, and the two rails of the first track are laid on both sides of the top of the erected T-beam, and the two rails of the first track are connected by a number of connecting cross bars arranged at intervals along the longitudinal direction; the two rails of the second track are respectively located on the outside of the two rails of the first track; in this way, the two rails of the first track are connected as a whole, and when the first track is moved, it can be ensured that the two rails move the same distance.

[0020] Furthermore, the first leg, second leg, third leg and fourth leg of any group of legs are arranged at equal intervals, the first hoist is located in the middle of the first leg and the second leg, and the second hoist is located in the middle of the third leg and the fourth leg; with this arrangement, the weight of the T-beam erection trolley is evenly distributed and is not easy to tip over.

[0021] Furthermore, the first leg, the second leg, the third leg and the fourth leg each include a first oil cylinder and a rail wheel support, the cylinder barrel of the first oil cylinder is fixed on the main body bracket, and the rail wheel support is fixed to the end of the piston rod at the bottom of the first oil cylinder; the rail wheel is rotatably mounted on the rail wheel support; the first leg, the second leg, the third leg and the fourth leg are extended and retracted by the oil cylinder, the structure is simple, and the extension and retraction amount is accurately controllable.

[0022] Furthermore, the jacking device includes several jacking cylinders respectively arranged on different rail wheel supports; any jacking cylinder is arranged vertically, and its cylinder barrel is fixed on the corresponding rail wheel support; the jacking cylinder can extend the piston rod downward and support the top surface of the erected T-beam, thereby lifting the T-beam upward to erect the trolley.

[0023] Furthermore, the first hoist and the second hoist both include a second oil cylinder and a hook, the cylinder barrel of the second oil cylinder is fixed on the main body bracket, and the hook is installed at the end of the piston rod at the bottom of the second oil cylinder; with such an arrangement, the first hoist and the second hoist are lifted and lowered by the oil cylinder, and the structure is simple. After the sling is tied to the T-beam, it can be cooperated with the hook to realize the lifting of the T-beam.

[0024] Furthermore, the main frame includes four groups of connecting cross beams and two groups of connecting longitudinal beams. The four groups of connecting cross beams are respectively used to connect the two first legs, the two second legs, the two third legs and the two fourth legs. The two groups of connecting longitudinal beams are respectively used to connect the first legs, the second legs, the third legs, the fourth legs, the first hoist and the second hoist on both sides; the main frame has a simple structure and only includes connecting cross beams and connecting longitudinal beams, which can connect all the legs and hoists into a whole, making the T-beam lifting trolley easy and quick to set up.

[0025] Furthermore, the lifting device is a cantilever crane.

[0026] Compared with the existing technology, the beneficial effects of the present invention are: the T-beams are all prefabricated off-site, saving on-site prefabrication time, and the T-beam erection trolley has a simple structure and is easy and quick to erect. At the same time, the transportation and erection process of the T-beams are also simple and quick, which makes the construction time shorter and the construction efficiency higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the state of the present invention corresponding to step a;

[0028] Figure 2 Schematic diagram of the T-beam erection trolley structure;

[0029] Figure 3 is a schematic structural diagram of the second leg or the fourth leg;

[0030] Figure 4 This is a schematic diagram of the state of the present invention corresponding to step f;

[0031] Figure 5 This is a schematic diagram of the first state of the present invention corresponding to step g;

[0032] Figure 6 This is a schematic diagram of the second state of the present invention corresponding to step g;

[0033] Figure 7 This is a schematic diagram of the first state of the present invention corresponding to step h;

[0034] Figure 8 This is a schematic diagram of the second state of the present invention corresponding to step h;

[0035] Figure 9 This is a schematic diagram of the first state of the present invention corresponding to step c after entering step i;

[0036] Figure 10 This is a schematic diagram of the second state of the present invention corresponding to step c after entering step i;

[0037] Figure 11 This is a schematic diagram of the first state of the present invention corresponding to step d in step i;

[0038] Figure 12 This is a schematic diagram of the second state of the present invention corresponding to step d in step i;

[0039] Figure 13 This is a schematic diagram of the state of the present invention corresponding to step e in step i;

[0040] Figure 14 This is a schematic diagram of the first state of the present invention corresponding to step f in step i;

[0041] Figure 15 This is a schematic diagram of the second state of the present invention corresponding to step f in step i.

[0042] Markings in the figure: 1-longitudinal beam, 2-T-beam already erected, 3-T-beam to be erected, 4-first track, 5-second track, 6-beam transport trolley, 7-T-beam erection trolley, 8-first support leg, 9-second support leg, 10-third support leg, 11-fourth support leg, 12-track wheel, 13-first hoist, 14-second hoist, 15-connecting crossbar, 16-first cylinder, 17-track wheel support, 18-lifting cylinder, 19-connecting crossbeam, 20-connecting longitudinal beam. DETAILED DESCRIPTION

[0043] The present invention will be described in detail below with reference to the accompanying drawings.

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] An embodiment of the present invention provides a T-beam erection method, as shown in the figure, comprising the following steps:

[0046] A T-beam erection method, characterized by comprising the following steps:

[0047] a, such as Figure 1 As shown, a plurality of T-beams are lifted from the ground by a lifting device and erected on the rear end of the longitudinal beam 1 to form a row of erected T-beams 2. A first track 4 and a second track 5 are laid along the longitudinal direction on top of the erected T-beams 2. The front ends of the first track 4 and the second track 5 extend to the front ends of the erected T-beams 2. A plurality of beam transport trolleys 6 are installed on the second track 5. The plurality of T-beams are lifted from the ground by a lifting device and transferred to the beam transport trolleys 6 to form a row of T-beams 3 to be erected. A T-beam erection trolley 7 is set up and placed on the first track 4 in front of the T-beams 3 to be erected.

[0048] Among them, the T-beams are all prefabricated in an off-site location and then transported to the site; the lifting device is a cantilever crane; the cantilever crane is arranged at the rear end of the longitudinal beam 1. The length of the railway shed is long, and it is impossible to erect all the T-beams by the cantilever crane. In this method, a row of erected T-beams 2 are erected at the rear end of the longitudinal beam 1 by the cantilever crane, which is used to carry the T-beams 3 to be erected and the T-beam erection trolley 7. The T-beam erection trolley 7 can move along the first track 4, so all the remaining T-beams can be erected by the T-beam erection trolley 7;

[0049] like Figure 2 As shown, the T-beam erection trolley 7 includes a main frame, with two groups of legs provided on both sides of the main frame, and the two groups of legs are arranged opposite to each other in the transverse direction. Each group of legs includes a first leg 8, a second leg 9, a third leg 10 and a fourth leg 11, which are arranged in sequence from front to back in the longitudinal direction. The four legs can be vertically extended and retracted, and rail wheels 12 are installed at the bottom of the four legs; a first hoist 13 is provided between the first leg 8 and the second leg 9 of each group of legs, and a second hoist 14 is provided between the third leg 10 and the fourth leg 11. The first hoist 13 and the second hoist 14 are both provided on the main frame; the rail wheels 12 are placed on the first rail 4;

[0050] The first track 4 and the second track 5 are both double-track tracks. The two rails of the first track 4 are laid on both sides of the top of the erected T-beam 2, and the two rails of the first track 4 are connected by a plurality of connecting cross bars 15 arranged at intervals along the longitudinal direction; the two rails of the second track 5 are respectively located outside the two rails of the first track 4;

[0051] The first leg 8, the second leg 9, the third leg 10 and the fourth leg 11 of any group of legs are arranged at equal intervals, the first hoist 13 is located in the middle of the first leg 8 and the second leg 9, and the second hoist 14 is located in the middle of the third leg 10 and the fourth leg 11;

[0052] like Figure 3As shown, the first leg 8, the second leg 9, the third leg 10 and the fourth leg 11 each include a first oil cylinder 16 and a rail wheel support 17. The cylinder barrel of the first oil cylinder 16 is fixed to the main frame, and the rail wheel support 17 is fixed to the end of the piston rod at the bottom of the first oil cylinder 16; the rail wheel 12 is rotatably mounted on the rail wheel support 17;

[0053] The first hoist 13 and the second hoist 14 each include a second oil cylinder and a hook, the cylinder barrel of the second oil cylinder is fixed on the main frame, and the hook is installed at the end of the piston rod at the bottom of the second oil cylinder;

[0054] The main frame includes four groups of connecting cross beams 19 and two groups of connecting longitudinal beams 20. The four groups of connecting cross beams 19 are respectively used to connect the two first legs 8, the two second legs 9, the two third legs 10 and the two fourth legs 11. The two groups of connecting longitudinal beams 20 are respectively used to connect the first legs 8, the second legs 9, the third legs 10, the fourth legs 11, the first hoist 13 and the second hoist 14 on both sides. Each group of connecting cross beams 19 includes two connecting cross beams 19 arranged in parallel above and below, and each group of connecting longitudinal beams 20 includes two connecting longitudinal beams 20 arranged in parallel above and below.

[0055] b. The fourth leg 11 of the T-beam erection trolley 7 is retracted to raise its track wheel 12. A T-beam 3 to be erected is moved between the third leg 10 and the fourth leg 11 by the beam transport trolley 6. The fourth leg 11 is then extended to lower its track wheel 12 until it is placed on the first track 4.

[0056] c. The second leg 9 and the third leg 10 of the trolley are retracted to raise their respective track wheels 12. The T-beam 3 to be erected between the third leg 10 and the fourth leg 11 is moved to the bottom of the first hoist 13 by the beam transport trolley 6. Then, the second leg 9 and the third leg 10 are extended to lower their respective track wheels 12 to be placed on the first track 4.

[0057] d. The fourth leg 11 of the trolley retracts to raise its track wheel 12, and the beam transport trolley 6 moves another T-beam 3 to be erected to the bottom of the second hoist 14. Then the fourth leg 11 extends to lower its track wheel 12 to be placed on the first track 4;

[0058] e. The first hoist 13 and the second hoist 14 respectively lift the two T-beams 3 to be erected, and then remove the beam transport trolley 6 for the T-beams 3 to be erected under the first hoist 13;

[0059] f: such as Figure 4 As shown, the T-beam lifting trolley 7 is moved forward as a whole until the T-beam 3 to be erected, which is lifted by the first hoist 13, is located directly above its erection position. Then, the first hoist 13 lowers the T-beam 3 to be erected to its erection position, thus completing the erection of one T-beam 3 to be erected.

[0060] g: such as Figure 5 and Figure 6 As shown, the first hoist 13 rises and resets; the T-beam lifting trolley 7 moves backward as a whole to the rail wheel 12 of the first leg 8 and is placed on the first track 4; the second hoist 14 lowers the T-beam 3 to be erected to the beam transport trolley 6 for loading, and then rises and resets;

[0061] h: such as Figure 7 and Figure 8 As shown, the T-beam erection trolley 7 is jacked up by the jacking device until it is separated from the first track 4, the first track 4 is moved forward until its end extends to the front end of the erected T-beam 2, and then the T-beam erection trolley 7 is lowered to the first track 4; the jacking device includes a plurality of jacking cylinders 18 respectively arranged on different track wheel supports 17; any jacking cylinder 18 is arranged vertically, and its cylinder barrel is fixed on the corresponding track wheel support 17; the jacking cylinder 18 can extend the piston rod downward and support it on the top surface of the erected T-beam 2, so as to jack up the T-beam erection trolley 7; in this embodiment, the track wheel supports 17 of the two second legs 9 and the two fourth legs 11 are respectively provided with a jacking cylinder 18; in addition, the jacking device can also be a jack;

[0062] i: loop step ch until all the T-beams 3 to be erected are completed; after entering step i, step cf is as follows Figures 9-15 As shown, the T-beam erection trolley 7 completes the erection of the second T-beam, and continues steps g, h, c, ... to form a loop until all the T-beams 3 to be erected are completed;

[0063] Among them, every time a number of T-beams are installed by the T-beam installation trolley 7, a section of track is spliced at the front end of the second track 5, so that the front end of the second track 5 extends to the front end of the installed T-beam 2; in this embodiment, a section of track is spliced every time 6 T-beams are installed; in addition, a section of track can also be spliced every time 2, 3, or other numbers of T-beams are installed;

[0064] While the T-beams are being erected by the T-beam erection trolley 7 , the T-beams are lifted from the ground by the lifting device and transferred to the beam transport trolley 6 , thereby supplementing the T-beams 3 to be erected.

[0065] Before step a, step a1 is also included: installing columns and longitudinal beams (columns are not shown in the accompanying drawings) in the excavated foundation pit of the shed cave; after step i, step j is also included: dismantling the T-beam erection trolley 7, the first track 4 and the second track 5.

[0066] The present invention adopts the above-mentioned technical scheme, and the T-beams are all prefabricated off-site. After being transported to the site, combined with the above steps, the erection of the T-beam on the top of the railway shed can be realized; at the same time, the designed T-beam erection trolley 7 has a simple structure and is easy and quick to erect; the T-beam erection trolley 7 and the T-beam to be erected are respectively free to move longitudinally on the erected T-beam 2 through the first track 4 and the second track 5, and the T-beam erection trolley 7 can avoid the T-beam 3 to be erected by retracting the legs, making the erection process of the T-beam fast and efficient; compared with the T-beam erection of the railway shed in the prior art, which includes the step of setting up a prefabrication site on the top of the shed for on-site prefabrication of the T-beam, resulting in a long construction time and low construction efficiency, the T-beams of the present invention are all prefabricated off-site, saving on-site prefabrication time, and the T-beam erection trolley has a simple structure and is easy and quick to erect, and at the same time, the transportation and erection process of the T-beam are also simple and quick, which makes the construction time shorter and the construction efficiency higher.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A T-beam erection method, characterized in that: The steps include: a. A plurality of T-beams are lifted from the ground by a lifting device and are installed on the rear end of the longitudinal beam (1) to form a row of installed T-beams (2); a first track (4) and a second track (5) are laid along the longitudinal direction on the top of the installed T-beams (2); the front ends of the first track (4) and the second track (5) extend to the front end of the installed T-beams (2); a plurality of beam transport trolleys (6) are installed on the second track (5); a plurality of T-beams are lifted from the ground by a lifting device and are transferred to the beam transport trolleys (6) to form a row of T-beams (3) to be installed; a T-beam installation trolley (7) is set up and placed on the first track (4) in front of the T-beams (3) to be installed; The T-beams are all prefabricated off-site; the T-beam erection trolley (7) includes a main frame, two groups of legs are respectively provided on both sides of the main frame, and the two groups of legs are arranged opposite to each other in the transverse direction, and each group of legs includes a first leg (8), a second leg (9), a third leg (10) and a fourth leg (11) arranged in sequence from front to back in the longitudinal direction, and the four legs are all vertically retractable, and the bottoms of the four legs are all equipped with track wheels (12); a first hoist (13) is provided between the first leg (8) and the second leg (9) of each group of legs, and a second hoist (14) is provided between the third leg (10) and the fourth leg (11), and the first hoist (13) and the second hoist (14) are both provided on the main frame; the track wheels (12) are placed on the first track (4); b. The fourth leg (11) of the T-beam erection trolley (7) is retracted to raise its track wheel (12), and a T-beam (3) to be erected is moved between the third leg (10) and the fourth leg (11) by the beam transport trolley (6), and then the fourth leg (11) is extended to lower its track wheel (12) to be placed on the first track (4); c. The second leg (9) and the third leg (10) of the trolley are both retracted to raise their respective track wheels (12), and the T-beam (3) to be erected between the third leg (10) and the fourth leg (11) is moved to the bottom of the first hoist (13) by the beam transport trolley (6), and then the second leg (9) and the third leg (10) are both extended to lower their respective track wheels (12) to be placed on the first track (4); d. The fourth leg (11) of the trolley is retracted to raise its track wheel (12), and the other T-beam (3) to be erected is moved to the bottom of the second hoist (14) by the beam transport trolley (6). Then the fourth leg (11) is extended to lower its track wheel (12) to be placed on the first track (4); e. The first hoist (13) and the second hoist (14) respectively lift two T-beams (3) to be erected, and then remove the beam transport trolley (6) of the T-beams (3) to be erected below the first hoist (13); f: The T-beam lifting trolley (7) is moved forward as a whole until the T-beam (3) to be erected, which is lifted by the first hoist (13), is located directly above its erection position, and then the first hoist (13) lowers the T-beam (3) to be erected to its erection position, thereby completing the erection of one T-beam (3) to be erected; g: The first hoist (13) rises and resets; the T-beam lifting trolley (7) moves backward as a whole to the track wheel (12) of the first leg (8) and is placed on the first track (4); the second hoist (14) lowers the T-beam (3) to be erected to the beam transport trolley (6) for loading, and then rises and resets; h: using a lifting device to lift the T-beam erection trolley (7) until it is separated from the first track (4), moving the first track (4) forward until its end extends to the front end of the erected T-beam (2), and then lowering the T-beam erection trolley (7) to the first track (4); i: looping step ch until all the T-beams (3) to be erected are completed; Wherein, each time a plurality of T-beams are erected by the T-beam erection trolley (7), a section of track is spliced at the front end of the second track (5), so that the front end of the second track (5) extends to the front end of the erected T-beam (2).

2. The T-beam erection method according to claim 1, characterized in that: While the T-beam is being erected by the T-beam erection trolley (7), the T-beam is lifted from the ground by the lifting device and transferred to the beam transport trolley (6), thereby supplementing the T-beam (3) to be erected.

3. The T-beam erection method according to claim 1, characterized in that: The first track (4) and the second track (5) are both double-track tracks. The two rails of the first track (4) are respectively laid on both sides of the top of the erected T-beam (2). The two rails of the first track (4) are connected by a plurality of connecting cross bars (15) arranged at intervals along the longitudinal direction. The two rails of the second track (5) are respectively located outside the two rails of the first track (4).

4. The T-beam erection method according to claim 1, characterized in that: The first leg (8), the second leg (9), the third leg (10) and the fourth leg (11) of any group of legs are arranged at equal intervals, the first hoist (13) is located in the middle of the first leg (8) and the second leg (9), and the second hoist (14) is located in the middle of the third leg (10) and the fourth leg (11).

5. The T-beam erection method according to claim 1, characterized in that: The first leg (8), the second leg (9), the third leg (10) and the fourth leg (11) all include a first oil cylinder (16) and a rail wheel support (17); the cylinder barrel of the first oil cylinder (16) is fixed on the main frame; the rail wheel support (17) is fixed to the end of the piston rod at the bottom of the first oil cylinder (16); and the rail wheel (12) is rotatably mounted on the rail wheel support (17).

6. The T-beam erection method according to claim 5, characterized in that: The jacking device comprises a plurality of jacking oil cylinders (18) respectively arranged on different rail wheel supports (17); any jacking oil cylinder (18) is arranged vertically, and its cylinder barrel is fixed on the corresponding rail wheel support (17); the jacking oil cylinder (18) can extend the piston rod downward and support it on the top surface of the erected T-beam (2), thereby jacking up the T-beam to erect the trolley (7).

7. The T-beam erection method according to claim 1, characterized in that: The first hoist (13) and the second hoist (14) both comprise a second oil cylinder and a hook. The cylinder barrel of the second oil cylinder is fixed on the main body bracket, and the hook is installed at the end of the piston rod at the bottom of the second oil cylinder.

8. The T-beam erection method according to claim 1, characterized in that: The main frame comprises four groups of connecting cross beams (19) and two groups of connecting longitudinal beams (20), the four groups of connecting cross beams (19) being respectively used to connect two first legs (8), two second legs (9), two third legs (10) and two fourth legs (11), and the two groups of connecting longitudinal beams (20) being respectively used to connect the first legs (8), the second legs (9), the third legs (10), the fourth legs (11), the first hoist (13) and the second hoist (14) on both sides.

9. The T-beam erection method according to claim 1, characterized in that: The lifting device is a cantilever crane.

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