A gantry crane suitable for erecting a roof beam of a railway shed

Abstract

The utility model discloses a portal crane suitable for railway shed hole top beam body erection, including two main girders, two end girders, four stands, two lower cross beams, four groups of running wheels, hoisting trolley, hoisting trolley frame, hoist. Through the device installation in shed hole pier top can realize all T beam and cross roof beam of shed hole top erection. The present application can directly through the railway flat car loading transportation to the field, and hoist two hooks can complete the assembly, saves the equipment on the existing line assembly time, reduces the occupation time to the existing line, improves the operation efficiency and reduces the cost expenditure. The device can directly hoist the beam body on the flat car, and after 90 degree rotation, the beam can be placed in place, which optimizes the process of crane hoisting and portal crane translocation, saves the crane, crane platform and other equipment, saves the construction time and cost of crane platform, crane erection and removal, crane bundle and unbundling beam rope.

Description

Technical Field

[0001] This utility model relates to the field of gantry crane technology, and in particular to a gantry crane suitable for erecting beams on the top of railway tunnels. Background Technology

[0002] During the erection of the roof beams for the newly added tunnels on existing railways, the project site is located in a steep slope and canyon area, making it impossible for most cranes and other lifting equipment to reach the work site or for them to be erected. Using railway flatbed cranes would take up too much railway operating time, hindering railway transport organization. Furthermore, the cranes would occupy railway tracks, requiring the erection of crane outrigger foundations on the track bed and the relocation of the overhead contact line, making the process complex and posing significant safety hazards to existing facilities. Specifically: if existing... The construction plan using a combination of a technical crane and a regular gantry crane involves transporting the crane and the beam to the designated location by locomotive after the existing railway is closed. The crane's outrigger platform is then erected, the existing railway overhead contact line is dismantled, the crane's posture is adjusted and prepared, and the beam is then lifted onto the roof of the archway. It is then rotated 90° and placed on the roof of the archway. Finally, the gantry crane is used to move it longitudinally to the designated location. After each closure point, the crane must be withdrawn, the overhead contact line restored, and the crane's outrigger platform dismantled to allow train passage. This process is repeated, making each construction window a complex and time-consuming undertaking.

[0003] Therefore, it is necessary to develop a gantry crane suitable for erecting beams on the top of railway tunnels to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to design a gantry crane suitable for erecting beams on the top of railway tunnels in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions: A gantry crane suitable for erecting beams on the top of railway tunnels includes: Two main beams; the two main beams are set parallel to each other; Two end beams; the two end beams are set parallel to each other; one end beam is installed between the front ends of the two main beams, and the other end beam is installed between the rear ends of the two main beams; Four columns; the four columns are arranged parallel to each other; two of the columns are installed below the front and rear ends of one main beam, and the other two columns are installed below the front and rear ends of another main beam. Two lower crossbeams; the two lower crossbeams are set parallel to each other; the lower crossbeams are parallel to the end beams; the upper ends of one lower crossbeam are connected to the lower ends of two columns respectively, and the upper ends of the other lower crossbeam are connected to the lower ends of two other columns respectively. Four sets of traveling wheels; two sets of traveling wheels are installed below both ends of a lower crossbeam, and the other two sets of traveling wheels are installed below both ends of another lower crossbeam; the four sets of traveling wheels travel on the two piers respectively; Crane trolley; the crane trolley is equipped with a crane trolley hook assembly; Crane trolley frame; The crane trolley is mounted on the crane trolley frame, and a traveling rail is provided on the main beam along its length. The crane trolley frame is placed on the traveling rail for movement. A lifting device that can rotate 360° horizontally; the lifting trolley is connected to the lifting device via a first wire rope.

[0006] Specifically, the crane hook assembly includes a hook nut, two pulleys, a pulley shaft, two lifting straps, a hook beam, a hook, a lifting device, and a lifting device pin. The two pulleys are connected by the pulley shaft. The upper ends of the two lifting straps are connected to the pulley shaft, and the lower ends of the two lifting straps are connected to both ends of the hook beam. The hook beam has vertical mounting holes, and the hook handle has external threads. The hook handle passes upward through the mounting holes. The diameter of the hook nut is larger than the diameter of the mounting holes. The hook nut is threaded to the upper end of the hook handle. The lifting device has horizontal pin holes, and the lifting device pin passes through the pin holes on the lifting device and is connected to the hook.

[0007] Furthermore, the crane hook assembly also includes a thrust self-aligning bearing, with the mounting hole being a stepped hole. The thrust self-aligning bearing is placed vertically on the step of the stepped hole, and the lower end of the hook nut is connected to the upper ring of the thrust self-aligning bearing.

[0008] Furthermore, the crane hook assembly also includes two shaft end nuts, which are respectively located on the outside of the two pulleys and are threaded to both ends of the pulley shaft.

[0009] Preferably, each main beam of the gantry crane also includes at least two lifting lugs, a second wire rope, and a chain hoist. At least two lifting lugs are installed below a main beam, the upper end of the second wire rope is connected to the lifting lug, and the lower end of the second wire rope is connected to the chain hoist.

[0010] Preferably, limit devices are provided at both ends of the upper part of the main beam.

[0011] Preferably, diagonal bracing is provided between the main beam and the column.

[0012] The beneficial effects of this utility model are as follows: (1) By installing this device on the top of the pier column of the shed, all T beams and cross beams on the top of the shed can be erected.

[0013] (2) The main structure of the device can be transported to the construction site by railway flatcar.

[0014] (3) Due to the height restriction requirements for transportation on the existing line, the main structure of the equipment is relatively low. It is assembled into two parts, the main frame and the overhead crane, at a low position outside the existing line. It can be directly transported to the site by railway flatcar and the assembly can be completed by hoisting two hooks. This saves the time of assembling the equipment on the existing line, reduces the time occupied by the existing line, improves the work efficiency and reduces the cost expenditure.

[0015] (4) The device can directly lift the beam on the flatbed truck, and after reaching the top of the pier, rotate it 90° to lower the beam into place. This optimizes the process of crane lifting and gantry crane lateral movement, saves equipment such as cranes and crane platforms, and saves construction time and costs for crane platform, crane erection and dismantling, and crane binding and unbinding beam ropes.

[0016] (5) This utility model has the characteristics of simple structure, convenient operation and low manufacturing difficulty. Attached Figure Description

[0017] Figure 1 This is a front view of a gantry crane suitable for erecting beams on the top of railway tunnels, as described in this utility model. Figure 2 This is a side view of a gantry crane suitable for erecting beams on the top of railway tunnels, as described in this utility model. Figure 3 This is a front view of the T-beam erection process using a gantry crane suitable for erecting beams on the top of railway tunnels, as described in this utility model.

[0018] Figure 4 This is a side view of the T-beam erection process using a gantry crane suitable for erecting beams on the top of railway tunnels, as described in this utility model.

[0019] Figure 5 This is a front view of the erection of a horizontal top beam using a gantry crane suitable for erecting the top beam of a railway tunnel, as described in this utility model.

[0020] Figure 6 This is a side view of the erection of the horizontal top beam by a gantry crane used for erecting the top beam of a railway tunnel, as described in this utility model.

[0021] Figure 7 This is a front view of the erection of the horizontal top beam and side beam of a gantry crane used for erecting the top beam of a railway tunnel, as described in this utility model.

[0022] Figure 8 This is a side view of the erection of the horizontal top beam and side beam of a gantry crane used for erecting the top beam of a railway tunnel, as described in this utility model. Figure 9 This is a schematic diagram of the lifting device in this utility model; Figure 10This is a front view of the T-beam before rotation during the erection of a gantry crane used for erecting beams on the top of railway tunnels, as described in this utility model.

[0023] In the diagram, 1-lifting trolley, 2-lifting trolley frame, 3-main beam, 4-limiting device, 5-column, 6-traveling wheel, 7-diagonal brace, 8-lower crossbeam, 9-end beam, 10-lifting tool, 11-lifting lug, 12-second wire rope, 13-chain hoist, 14-pier column, 15-T-beam, 16-horizontal top beam, 17-hook nut, 18-pulley, 19-pulley shaft, 20-shaft end nut, 21-lifting strap, 22-hook crossbeam, 23-hook, 24-first wire rope, 25-railway flatcar, 26-lifting tool pin, 27-thrust self-aligning bearing. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component 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 this utility model.

[0028] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0029] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] like Figure 1 and 2 As shown, a gantry crane suitable for erecting beams on the top of railway tunnels includes: Two main beams 3; the two main beams 3 are arranged parallel to each other; Two end beams 9; the two end beams 9 are arranged parallel to each other; one end beam 9 is installed between the front ends of the two main beams 3 through a flange, and the other end beam 9 is installed between the rear ends of the two main beams 3 through a flange. Four columns 5; the four columns 5 are arranged in parallel to each other; two of the columns 5 are installed below the front and rear ends of one main beam 3 through flanges, and the other two columns 5 are installed below the front and rear ends of another main beam 3 through flanges. Two lower crossbeams 8; the two lower crossbeams 8 are set parallel to each other; the lower crossbeams 8 are parallel to the end beams 9; the upper ends of one lower crossbeam 8 are connected to the lower ends of two columns 5 respectively through flanges, and the upper ends of the other lower crossbeam 8 are connected to the lower ends of two other columns 5 respectively through flanges. Four sets of traveling wheels 6; two sets of traveling wheels 6 are respectively installed below the two ends of a lower crossbeam 8, and the other two sets of traveling wheels 6 are respectively installed below the two ends of another lower crossbeam 8; the four sets of traveling wheels 6 travel on the two piers 14 respectively. Crane trolley 1; Crane trolley 1 is equipped with a crane hook assembly; Crane trolley frame 2; Crane trolley 1 is mounted on crane trolley frame 2, and a traveling rail is provided on the main beam 3 along its length direction. The crane trolley frame 2 is placed on the traveling rail for movement. A lifting device 10 that can rotate 360° horizontally; a lifting trolley 1 is connected to the lifting device 10 via a first wire rope 24.

[0032] In some embodiments, such as Figure 9As shown, the crane trolley hook assembly includes a hook 23, a nut 17, two pulleys 18, a pulley shaft 19, two lifting straps 21, a hook beam 22, a hook 23, a lifting device 10, and a lifting device pin 26. The two pulleys 18 are connected by the pulley shaft 19. The upper ends of the two lifting straps 21 are connected to the pulley shaft 19, and the lower ends of the two lifting straps 21 are connected to both ends of the hook beam 22. The hook beam 22 has a vertical mounting hole. The handle of the hook 23 has an external thread, and the handle of the hook 23 passes upward through the mounting hole. The diameter of the hook nut 17 is larger than the diameter of the mounting hole. The hook nut 17 is threaded to the upper end of the handle of the hook 23. The lifting device 10 has a horizontal pin hole, and the lifting device pin 26 passes through the pin hole on the lifting device 10 and the hook 23.

[0033] In some embodiments, such as Figure 9 As shown, the crane hook assembly also includes a thrust self-aligning bearing 28. The mounting hole is formed as a stepped hole, and the thrust self-aligning bearing 28 is placed vertically on the step of the stepped hole. The lower end of the hook 23 nut 17 is connected to the upper ring of the thrust self-aligning bearing 28. The purpose of the thrust self-aligning bearing 28 is to facilitate the horizontal rotation of the hook 23.

[0034] In some embodiments, such as Figure 9 As shown, the crane hook assembly also includes two shaft end nuts 20, which are respectively located on the outer sides of the two pulleys 18. The two shaft end nuts 20 are threaded into both ends of the pulley shaft 19. The purpose of the shaft end nuts 20 is to provide a limiting fit between the pulley shaft 19 and the pulley 18.

[0035] In some embodiments, such as Figure 1 As shown, each main beam 3 of the gantry crane also includes at least two lifting lugs 11, a second wire rope 12, and a chain hoist 13. At least two lifting lugs 11 are installed below a main beam 3. The upper end of the second wire rope 12 is connected to the lifting lug 11, and the lower end of the second wire rope 12 is connected to the chain hoist 13.

[0036] In some embodiments, such as Figure 1 As shown, limit devices 4 are provided at both ends of the upper part of the main beam 3. The purpose of the limit devices 4 is to limit the movement of the crane trolley frame 2 on the main beam 3.

[0037] In some embodiments, such as Figure 1 As shown, a diagonal brace 7 is installed between the main beam 3 and the column 5. The purpose of the diagonal brace 7 is to improve the stability between the main beam 3 and the column 5.

[0038] This application completed the erection of all T-beams 15 and the central transverse top beam 16 of the shed roof under the action of the crane trolley 1, crane trolley frame 2, main beam 3, limiting device 4, column 5, traveling wheel 6, diagonal brace 7, lower crossbeam 8, end beam 9, and lifting device 10.

[0039] This application completed the erection of the outermost horizontal top beam 16 of the shed roof using a crane trolley 1, crane trolley frame 2, main beam 3, limiting device 4, column 5, traveling wheel 6, diagonal brace 7, lower crossbeam 8, end beam 9, lifting lug 11, first wire rope 24, and chain hoist 13.

[0040] like Figure 1-10 As shown, the working principle is as follows: the lifting trolley 1 lifts or lowers the beam, and the rotating hoist 10 enables the T-beam 15 and the horizontal top beam 16 to rotate on the plane to ensure that the beam does not collide with the pier 14 when lifting the beam and to ensure that it is accurately installed on the pier 14. The traveling wheels 6 can move longitudinally on the track on the pier 14, so that the gantry crane can move longitudinally to the beam on the railway flatcar 25 to pick up the beam, and then move longitudinally to the designated beam dropping position to drop the beam.

[0041] Working process: When the railway flatcar 25 transports the beam to the site, the gantry crane traveling mechanism (traveling wheel 6) moves longitudinally along the track on the pier 14 to the beam picking position. The lifting device 10 is rotated to be perpendicular to the main beam 3 of the gantry crane. The lifting device 10 is lowered onto the T-beam 15 or the transverse top beam 16 (hereinafter collectively referred to as the beam). The lifting holes on the lifting device 10 correspond to the pre-embedded lifting rings on the beam. The lifting device 10 is connected to the beam using the lifting beam pin. The lifting device 10 is kept perpendicular to the main beam 3 and lifted. If the safety distance from the contact wire on the railway is insufficient, the lateral moving lifting trolley 2 is used to increase the safety distance. When the beam is lifted to a height of 30cm above the pier 14, the lifting is stopped. The lateral moving lifting trolley 2 is moved toward the center of the main beam 3 of the gantry crane to ensure that the beam is located at the center of the main beam 3. The lifting device 10 is rotated 90 degrees with the beam by the guy rope at the beam end until the beam is parallel to the main beam 3. When erecting the T-beam and the middle transverse top beam 16, the beam is moved longitudinally to the position to be erected using the track on the pier column 14 by the traveling wheel 6. Then, the lifting trolley 1 is used to lower the beam into place. The connection between the lifting device 10 and the pre-embedded lifting hole of the beam is disconnected, and the beam erection is completed. When erecting the end transverse top beam 16, the beam is moved longitudinally to the end of the pier 14 using the track of the traveling wheels 6 on the pier 14. Then, the lifting trolley 1 is used to lower the beam onto the pier 14. The connection between the lifting beam spreader 26 of the lifting device 10 and the pre-embedded lifting hole of the beam is disconnected. The center of the corresponding main beam 3 is then aligned with the centerline of the transverse top beam 16 using the track of the traveling wheels 6 on the pier 14. The chain hoist 13 is lowered so that its hook is installed on the pre-embedded lifting hole of the transverse top beam 16. The two chain hoists 13 are simultaneously lifted to raise the transverse top beam 16 until it is 10cm away from the top surface of the pier 14. The lifting is then stopped. The beam is moved longitudinally to the designated lowering position using the track of the traveling wheels 6 on the pier 14. The two chain hoists 13 are used to lower the transverse top beam 16 into place. The connection between the chain hoist 13 and the pre-embedded lifting hole of the beam is disconnected. The erection of the end transverse top beam 16 is now complete.

[0042] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. A gantry crane suitable for erecting beams on the top of railway tunnels, characterized in that, include: Two main beams; the two main beams are set parallel to each other; Two end beams; the two end beams are set parallel to each other; One end beam is installed between the front ends of the two main beams, and the other end beam is installed between the rear ends of the two main beams. Four columns; the four columns are arranged parallel to each other; two of the columns are installed below the front and rear ends of one main beam, and the other two columns are installed below the front and rear ends of another main beam. Two lower crossbeams; the two lower crossbeams are set parallel to each other; the lower crossbeams are parallel to the end beams; the upper ends of one lower crossbeam are connected to the lower ends of two columns respectively, and the upper ends of the other lower crossbeam are connected to the lower ends of two other columns respectively. Four sets of traveling wheels; two sets of traveling wheels are installed below both ends of a lower crossbeam, and the other two sets of traveling wheels are installed below both ends of another lower crossbeam; the four sets of traveling wheels travel on the two piers respectively; Crane trolley; the crane trolley is equipped with a crane trolley hook assembly; Crane trolley frame; The crane trolley is mounted on the crane trolley frame, and a traveling rail is provided on the main beam along its length. The crane trolley frame is placed on the traveling rail for movement. A lifting device that can rotate 360° horizontally; the lifting trolley is connected to the lifting device via a first wire rope.

2. A gantry crane for erecting beams on the top of railway tunnels according to claim 1, characterized in that, The crane hook assembly includes a hook nut, two pulleys, a pulley shaft, two lifting straps, a hook beam, a hook, a lifting device, and a lifting device pin. The two pulleys are connected by the pulley shaft. The upper ends of the two lifting straps are connected to the pulley shaft, and the lower ends of the two lifting straps are connected to both ends of the hook beam. The hook beam has vertical mounting holes, and the hook handle has external threads. The hook handle passes upward through the mounting holes. The diameter of the hook nut is larger than the diameter of the mounting holes, and the hook nut is threaded to the upper end of the hook handle. The lifting device has horizontal pin holes, and the lifting device pin passes through the pin holes on the lifting device and is connected to the hook.

3. A gantry crane for erecting beams on the top of railway tunnels according to claim 2, characterized in that, The crane hook assembly also includes a thrust self-aligning bearing. The mounting hole is formed as a stepped hole. The thrust self-aligning bearing is placed vertically on the step of the stepped hole. The lower end of the hook nut is connected to the upper ring of the thrust self-aligning bearing.

4. A gantry crane suitable for erecting beams on the top of railway tunnels according to claim 2, characterized in that, The crane hook assembly also includes two shaft end nuts, which are respectively located on the outside of the two pulleys and are threaded to both ends of the pulley shaft.

5. A gantry crane for erecting beams on the top of railway tunnels according to claim 1, characterized in that, Each main beam of the gantry crane also includes at least two lifting lugs, a second wire rope, and a chain hoist. At least two lifting lugs are installed under a main beam, the upper end of the second wire rope is connected to the lifting lug, and the lower end of the second wire rope is connected to the chain hoist.

6. A gantry crane for erecting beams on the top of railway tunnels according to claim 1, characterized in that, Limiting devices are installed at both ends of the upper part of the main beam.

7. A gantry crane for erecting beams on the top of railway tunnels according to claim 1, characterized in that, Diagonal bracing is installed between the main beam and the column.

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