Hydraulic lifting type freight cableway portal erecting device and use method thereof

Abstract

The application discloses a hydraulic lifting type freight cableway portal erecting device and a use method thereof, and the device comprises a hydraulic lifting device and a position adjusting device, the hydraulic lifting device is arranged on the position adjusting device, the hydraulic lifting device comprises a rack and a lifting assembly, the lifting assembly comprises a clamp one, a clamp two, a clamp three and a hydraulic cylinder one, the position adjusting device drives the hydraulic lifting device to move, and the hydraulic lifting device is used for lifting the portal support leg, so that the portal erecting method from top to bottom is adopted in actual use, the portal beam is connected with the upper end of the portal support leg, then the erected cableway portal is lifted by the erecting device, and subsequent portal support leg connection is carried out, the freight cableway portal erecting time is shortened, and the standardization and standardization technology of freight cableway erecting operation is developed to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of overhead line foundation construction, specifically to a hydraulic lifting freight cableway gantry erection device and its usage method. Background Technology

[0002] Freight cableways are widely used in power grid construction projects. However, the traditional method of erecting freight cableway gantry frames involves first erecting the legs at both ends of the gantry, and then erecting the intermediate crossbeam. But in complex terrain conditions such as high-altitude steep mountainous areas, it is difficult to transport some heavy machinery, making the erection of the intermediate crossbeam very difficult. At the same time, the erection work is repetitive and mechanical, and it is difficult to fully guarantee the safety and efficiency of the workers.

[0003] The erection of the gantry for freight cableways is the most critical step in the construction of freight cableways. If the gantry beam can be self-climbing, the erection time of the freight cableway gantry can be shortened, which will greatly improve the efficiency of power grid construction, shorten the construction time, and reduce the labor costs in the construction process. Summary of the Invention

[0004] The technical problem to be solved by the present invention is the difficulty in erecting the gantry beam of the cableway gantry. The purpose is to provide a hydraulic lifting type freight cableway gantry erection device and its usage method, which solves the problem of the gantry beam self-climbing.

[0005] This invention is achieved through the following technical solution:

[0006] A hydraulic lifting type freight cableway gantry erection device, the cableway gantry includes a gantry beam and gantry legs, and includes: a hydraulic lifting device and a position adjustment device, wherein the hydraulic lifting device is mounted on the position adjustment device;

[0007] The hydraulic lifting device includes: a frame and a lifting assembly, the lifting assembly being fixed on the frame, the frame having a lower end and an upper end, and the lifting assembly being used to lift the gantry outriggers;

[0008] The position adjustment device includes a moving platform and an adjustment component. The lower end of the frame is rotatably connected to the moving platform, the fixed end of the adjustment component is connected to the moving platform, and the moving end of the adjustment component is rotatably connected to the frame.

[0009] Specifically, the lifting assembly includes: clamp one, clamp two, clamp three, and hydraulic cylinder one;

[0010] The first end of the first clamp is vertically and fixedly connected to the upper end of the frame, and the first end of the third clamp is fixedly connected to the lower part of the frame. The first clamp and the third clamp are arranged parallel to each other.

[0011] The cylinder body of the first hydraulic cylinder is fixedly connected to the frame, and the extension and retraction direction of the rod of the first hydraulic cylinder is perpendicular to the first clamp. The second clamp is disposed between the first clamp and the third clamp, and the first end of the second clamp is fixedly connected perpendicularly to the rod of the first hydraulic cylinder.

[0012] Specifically, the gantry leg includes an upper section, a middle section, and a lower section. The distance between clamp one and clamp three is equal to the length of the middle section of the gantry leg. Hydraulic cylinder one drives clamp two to move between clamp one and clamp three.

[0013] Optionally, the clamp one / clamp two / clamp three includes: an arc-shaped clamp one, an arc-shaped clamp two, and a driving assembly. The first end of the arc-shaped clamp one is rotatably connected to the first end of the arc-shaped clamp two. The driving assembly is used to drive the arc-shaped clamp one and / or the arc-shaped clamp two to rotate around the connection point.

[0014] When in the clamped state, the gantry leg is located between the first arc-shaped clamp and the second arc-shaped clamp, and the first arc-shaped clamp and the second arc-shaped clamp exert a force on the gantry leg;

[0015] When in the released state, the distance between the second end of the first arc-shaped clamp and the second end of the second arc-shaped clamp is greater than the diameter of the gantry leg.

[0016] Specifically, the mobile platform includes: a support plate and moving wheels disposed on the underside of the support plate;

[0017] The support plate is configured to have a first end and a second end. The lower end of the adjustment component is connected to the first end of the support plate. The frame is connected to the middle part of the support plate. The second end of the support plate is provided with a through groove that communicates with the middle part of the support plate. The through groove is used for the gantry support leg to pass through.

[0018] Specifically, the adjustment assembly includes a second hydraulic cylinder, the cylinder body of which is hinged to the first end of the support plate, the upper end of which is hinged to the frame, and the second hydraulic cylinder drives the frame to rotate around the lower end of the frame.

[0019] A method for using a hydraulic lifting freight cableway gantry erection device, comprising erecting a cableway gantry based on the hydraulic lifting freight cableway gantry erection device as described above, the method of erecting the cableway gantry including:

[0020] S1. Connects the upper end of the gantry crossbeam to the upper section of the gantry leg; connects the upper section of the gantry leg to the middle section of the gantry leg;

[0021] S2. Move the erection device to the installation position, clamp one clamps the upper section of the gantry leg, clamp two clamps the upper end of the middle section of the gantry leg, and clamp three clamps the lower end of the middle section of the gantry leg.

[0022] S3. Adjust the adjustment components to change the tilt angle of the gantry legs until the included angle of the gantry legs meets the installation requirements;

[0023] S4. Release clamp two, control clamp two to move towards clamp three, and after moving a certain distance, control clamp two to clamp the lower end of the middle section of the gantry leg again;

[0024] S5. Release clamp one and clamp three, control clamp two to move towards clamp one, and after moving a certain distance, control clamp two to clamp the middle section of the gantry leg again; at the same time, control the moving platform to make adaptive movements.

[0025] S6. After raising the middle section of the gantry outrigger to the set height, connect the lower section of the gantry outrigger to the lower end of the middle section of the gantry outrigger.

[0026] S7. Control the clamp to move from the second to the third direction until the lower end of the gantry leg is placed on the ground, and dismantle the erection device.

[0027] Specifically, in step S2, clamp one is clamped on the upper section of the gantry leg near the lower flange; clamp two is clamped on the middle section of the gantry leg near the upper flange; and clamp three is clamped on the middle section of the gantry leg near the lower flange.

[0028] Specifically, in step S4, the moving distance of clamp two to clamp three is: 1 / 2 of the length of the middle section of the gantry leg;

[0029] In step S5, the moving distance of clamp two to clamp one is 1 / 2 of the length of the middle section of the gantry leg.

[0030] Furthermore, if the number of gantry leg sections is N, then step S5 specifically includes:

[0031] S51. Release clamp one and clamp three, control clamp two to move towards clamp one, and after moving a certain distance, control clamp one to clamp the middle section of the gantry leg again. Set the middle section of the gantry leg in this step as the nth one.

[0032] S52. Connect the middle section of the (n+1)th gantry leg to the lower end of the middle section of the nth gantry leg, control clamp three to clamp the middle section of the (n+1)th gantry leg, and control clamp one to clamp the middle section of the nth gantry leg.

[0033] S53. Release clamp two, control clamp two to move to clamp three, and after moving a certain distance, control clamp two to clamp the middle section of the n+1th gantry leg again;

[0034] S54. Repeat steps S51 to S53 until the erection of the middle sections of N gantry legs is completed.

[0035] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0036] This invention uses a position adjustment device to move a hydraulic lifting device, which in turn lifts the gantry legs. In practical use, this allows for a "top-down" gantry erection method. First, the gantry beam is connected to the upper end of the gantry legs. Then, the erected cableway gantry is lifted by the erection device for subsequent gantry leg connection. This method can shorten the erection time of freight cableway gantry and promote the standardization and normalization of freight cableway erection operations.

[0037] The present invention forms a triangle between the frame, hydraulic cylinder 2, and mobile platform to create a stable structure and improve the safety of the erection device; and it incorporates a variable angle design to meet the different angle requirements of the gantry legs of the freight cableway and to satisfy the installation requirements under various working conditions. Attached Figure Description

[0038] The accompanying drawings illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the principles of the invention. These drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, but do not constitute a limitation on the embodiments of the present invention.

[0039] Figure 1 This is a schematic diagram of the structure of a hydraulic lifting freight cableway gantry erection device according to the present invention.

[0040] Figure 2 This is a top view of the support plate according to the present invention.

[0041] Figure 3 This is a structural schematic diagram of clamp one / clamp two / clamp three according to the present invention, and the figure shows the clamping state.

[0042] Figure 4 This is a structural schematic diagram of clamp one / clamp two / clamp three according to the present invention, and the figure shows the loosened state.

[0043] Figure 5 This is a schematic diagram illustrating the use of a hydraulic lifting freight cableway gantry erection device according to the present invention.

[0044] Figure 6 This is a schematic diagram illustrating step S2 of the method of using a hydraulic lifting freight cableway gantry erection device according to the present invention.

[0045] Figure 7This is a schematic diagram illustrating step S4 of the method of using a hydraulic lifting freight cableway gantry erection device according to the present invention.

[0046] Figure 8 This is a schematic diagram illustrating step S51 of the method of using a hydraulic lifting freight cableway gantry erection device according to the present invention.

[0047] Figure 9 This is a schematic diagram illustrating step S54 of the method of using a hydraulic lifting freight cableway gantry erection device according to the present invention.

[0048] Figure 10 This is a schematic diagram illustrating step S54 of the method of using a hydraulic lifting freight cableway gantry erection device according to the present invention.

[0049] Reference numerals in the attached drawings: 1-Clamp 1, 2-Clamp 2, 3-Rod of hydraulic cylinder 1, 4-Clamp 3, 5-Cylinder body of hydraulic cylinder 1, 6-Frame, 7-Rod of hydraulic cylinder 2, 8-Cylinder body of hydraulic cylinder 2, 9-Support plate, 10-Roller, 11-Gantry crossbeam, 12-Upper section of gantry leg, 13-Middle section of gantry leg. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this invention clearer, the 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 for illustrative purposes only and are not intended to limit the scope of the invention.

[0051] It should also be noted that, for ease of description, only the parts relevant to the present invention are shown in the accompanying drawings.

[0052] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "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 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 application according to the specific circumstances.

[0053] In this application, 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.

[0054] Where there is no conflict, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0055] The cableway gantry in this application includes a gantry beam 11 and gantry legs, and the gantry legs include an upper gantry leg 12, a middle gantry leg 13 and a lower gantry leg, with the number of middle gantry legs 13 being greater than or equal to 1.

[0056] Example 1

[0057] like Figure 1 As shown, a hydraulic lifting freight cableway gantry erection device includes: a hydraulic lifting device and a position adjustment device. The hydraulic lifting device is mounted on the position adjustment device. The hydraulic lifting device raises the cableway gantry through continuous lifting operations. The position adjustment device adjusts the horizontal position according to the changes in lifting height, and can also adjust the angle of the lifting device to meet different working conditions.

[0058] The hydraulic lifting device includes a frame 6 and a lifting assembly. The lifting assembly is fixed on the frame 6. The frame 6 has a lower end and an upper end. The lifting assembly is used to lift the gantry legs. In this embodiment, the frame 6 can be a rectangular plate or a straight rod. The lifting assembly and the hydraulic cylinder are respectively arranged on both sides of the frame 6.

[0059] In this embodiment, the lifting assembly includes: clamp 1, clamp 2, clamp 3, and hydraulic cylinder 1. The first end of clamp 1 is vertically and fixedly connected to the upper end of the frame 6, and the first end of clamp 3 is fixedly connected to the lower part of the frame 6. Clamp 1 and clamp 3 are arranged in parallel.

[0060] The cylinder body of hydraulic cylinder one is fixedly connected to the frame 6, and the extension and retraction direction of the rod 3 of hydraulic cylinder one is perpendicular to clamp one 1. Clamp two 2 is set between clamp one 1 and clamp three 4, and the first end of clamp two 2 is fixedly connected perpendicularly to the rod 3 of hydraulic cylinder one.

[0061] That is, clamp 1, clamp 2, and clamp 3 are arranged in parallel in sequence, and clamp 2 can slide up and down relative to the frame 6, while clamp 2 and clamp 3 are fixed relative to the frame 6. The distance between clamp 1 and clamp 3 is equal to the length of the middle section 13 of the gantry leg, and hydraulic cylinder 1 drives clamp 2 to move between clamp 1 and clamp 3.

[0062] The position adjustment device includes a moving platform and an adjustment assembly. The lower end of the frame 6 is rotatably connected to the moving platform, the fixed end of the adjustment assembly is connected to the moving platform, and the moving end of the adjustment assembly is rotatably connected to the frame 6. The moving platform includes a support plate 9 and casters disposed on the underside of the support plate 9. The support plate 9 can move on the ground under the action of the casters, facilitating the adjustment of the position of the position adjustment device.

[0063] like Figure 2 As shown, the support plate 9 is configured to have a first end and a second end, the first end being... Figure 2 On the left side, the first end is Figure 2 On the right side, the lower end of the adjusting component is connected to the first end of the support plate 9, the frame 6 is connected to the middle of the support plate 9, and the second end of the support plate 9 is provided with a through groove that connects to the middle of the support plate 9. The through groove is used for the gantry legs to pass through.

[0064] The adjustment assembly includes a second hydraulic cylinder. The cylinder body 8 of the second hydraulic cylinder is hinged to the first end of the support plate 9, and the rod body 7 of the second hydraulic cylinder is hinged to the frame 6. The second hydraulic cylinder drives the frame 6 to rotate around the lower end of the frame 6. By changing the length of the second hydraulic cylinder, the included angle between the frame 6 and the support plate 9 is controlled, thereby changing the angle of the lifting gantry outriggers.

[0065] In this embodiment, the gantry outriggers need to be lifted by repeatedly clamping and releasing the clamps, therefore an embodiment of the clamps is provided.

[0066] The clamp 1 / clamp 2 / clamp 3 includes: arc-shaped clamp 1, arc-shaped clamp 2, and a drive assembly. The first end of arc-shaped clamp 1 is rotatably connected to the first end of arc-shaped clamp 2. The drive assembly is used to drive arc-shaped clamp 1 and / or arc-shaped clamp 2 to rotate around the connection point. In this embodiment, the drive assembly can be an electric telescopic rod, a hydraulic telescopic rod, a servo motor, a manual clamp, or other structures, as long as it can achieve the clamping or loosening of arc-shaped clamp 1 and arc-shaped clamp 2.

[0067] like Figure 3 As shown, when in the clamped state, the gantry leg is located between the first and second arc-shaped clamps, and the first and second arc-shaped clamps exert a force on the gantry leg.

[0068] like Figure 4As shown, when in the loosened state, the distance between the second end of the first arc-shaped clamp and the second end of the second arc-shaped clamp is greater than the diameter of the gantry leg, and the opening degree of the first arc-shaped clamp and the second arc-shaped clamp is greater than the diameter of the gantry leg, so that the gantry leg can be separated from clamp 1, clamp 2 and clamp 3 after installation.

[0069] Example 2

[0070] This embodiment provides a method for erecting a cableway gantry, which is based on a hydraulic lifting freight cableway gantry erection device as described in Embodiment 1. That is, this embodiment provides a method for using the hydraulic lifting freight cableway gantry erection device.

[0071] This embodiment uses the number of the middle section 13 of the gantry support leg as one, and provides an erection method, which includes:

[0072] S1, connecting the upper end of the gantry crossbeam 11 to the upper end of the gantry leg 12; connecting the upper end of the gantry leg 12 to the middle end of the gantry leg 13; such as Figure 5 As shown, after a reasonable selection of the location, the gantry beam 11 and the upper section 12 of the gantry leg are connected on the ground by a pin, and the upper section 12 of the gantry leg is connected to the middle section 13 of the gantry leg by bolts.

[0073] S2. Move the erection device to the installation position. Clamp 1 clamps the upper section 12 of the gantry leg, clamp 2 clamps the upper end of the middle section 13 of the gantry leg, and clamp 3 clamps the lower end of the middle section 13 of the gantry leg; if... Figure 5 and Figure 6 As shown, clamp 1 is clamped on the upper section 12 of the gantry leg near the lower flange; clamp 2 is clamped on the middle section 13 of the gantry leg near the upper flange; clamp 3 is clamped on the middle section 13 of the gantry leg near the lower flange.

[0074] S3. Adjust the adjustment components, that is, adjust the extension of hydraulic cylinder two to change the tilt angle of the gantry legs until the included angle of the gantry legs meets the installation requirements.

[0075] S4. Release clamp 2, and control clamp 2 to move towards clamp 3 4 by shortening hydraulic cylinder 1. After moving a certain distance, control clamp 2 to clamp the lower end of the middle section 13 of the gantry leg again. The distance that clamp 2 moves from clamp 2 to clamp 3 4 is 1 / 2 of the length of the middle section 13 of the gantry leg. Figure 7 As shown.

[0076] S5. Release clamp 1 and clamp 3 4, and control clamp 2 2 to move towards clamp 1. After moving a certain distance, control clamp 2 2 to clamp the middle section 13 of the gantry leg again. At this time, since the middle section of the gantry leg and clamp 2 2 are in a relatively fixed state, the middle section 13 of the gantry leg can be lifted by moving clamp 2 2 upward. The distance that clamp 2 2 moves towards clamp 1 is 1 / 2 of the length of the middle section 13 of the gantry leg.

[0077] At the same time, the control and moving platform make adaptive movements, that is, during the lifting process, the moving platform is moved by the rolling of the rollers 10 to adapt to the change in the distance between the ends of the gantry legs.

[0078] S6. After raising the middle section 13 of the gantry leg to the set height, connect the lower section of the gantry leg to the lower end of the middle section 13 of the gantry leg; bolt the lower section of the gantry leg to the middle section of the gantry leg.

[0079] S7. Control clamp 2 to move towards clamp 3 4 until the lower end of the gantry leg is placed on the ground, and dismantle the erection device. That is, place the gantry support on the ground, then release clamp 1, clamp 2, and clamp 3 4, remove the entire device from the gantry leg, install and fix it on the ground, and remove the erection device. The freight cableway gantry is now erected.

[0080] Example 3

[0081] In Embodiment 2, it can be seen that the method is applicable when the number of gantry leg mid-sections 13 is 1. However, in reality, the number of gantry leg mid-sections 13 is multiple. Therefore, this embodiment provides an erection method when the number of gantry leg mid-sections 13 is N.

[0082] In this embodiment, steps S1 to S4 are the same as those in embodiment two.

[0083] Step S5 includes several sub-steps, which are explained below.

[0084] S51. Release clamp 1 and clamp 3 4, control clamp 2 2 to move towards clamp 1 1, and after moving a certain distance, control clamp 1 1 to clamp the middle section 13 of the gantry leg again. Set the middle section 13 of the gantry leg in this step as the nth one; Figure 8 As shown, after completing this step, the middle section 13 of the nth gantry leg is moved upward by a set distance.

[0085] S52, such as Figure 8 As shown, the middle section 13 of the (n+1)th gantry leg is connected to the lower end of the middle section 13 of the nth gantry leg, and the control clamp 3 4 clamps the middle section 13 of the (n+1)th gantry leg, and the control clamp 1 clamps the middle section 13 of the nth gantry leg.

[0086] S53. Release clamp 2 and control clamp 2 to move towards clamp 3 4. After moving a certain distance, control clamp 2 to clamp the middle section 13 of the n+1th gantry leg again.

[0087] S54. Repeat steps S51 to S53, i.e. Figure 9 and Figure 10 As shown, this continues until the erection of the middle sections 13 of N gantry legs is completed. That is, in this embodiment, the value of n ranges from 1 to N.

[0088] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0089] 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 at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0090] Those skilled in the art should understand that the above embodiments are merely for illustrating the present invention and are not intended to limit the scope of the invention. Those skilled in the art can make other changes or modifications based on the above invention, and these changes or modifications still fall within the scope of the present invention.

Claims

1. A method for using a hydraulic lifting freight cableway gantry erection device, characterized in that, Based on a hydraulic lifting freight cableway gantry erection device; The cableway gantry includes a gantry beam (11) and gantry legs; The erection device includes a hydraulic lifting device and a position adjustment device, wherein the hydraulic lifting device is mounted on the position adjustment device; The hydraulic lifting device includes: a frame (6) and a lifting assembly, the lifting assembly being fixed on the frame (6), the frame (6) having a lower end and an upper end, the lifting assembly being used to lift the gantry outriggers; The position adjustment device includes: a moving platform and an adjustment component. The lower end of the frame (6) is rotatably connected to the moving platform. The fixed end of the adjustment component is connected to the moving platform. The moving end of the adjustment component is rotatably connected to the frame (6). The lifting assembly includes: clamp one (1), clamp two (2), clamp three (4) and hydraulic cylinder one; the first end of clamp one (1) is vertically fixedly connected to the upper end of the frame (6), the first end of clamp three (4) is fixedly connected to the lower part of the frame (6), and clamp one (1) and clamp three (4) are arranged in parallel; the cylinder body of hydraulic cylinder one is fixedly connected to the frame (6), and the extension direction of the rod (3) of hydraulic cylinder one is perpendicular to clamp one (1); clamp two (2) is arranged between clamp one (1) and clamp three (4), and the first end of clamp two (2) is vertically fixedly connected to the rod (3) of hydraulic cylinder one; The gantry support leg includes an upper section (12), a middle section (13), and a lower section. The distance between clamp one (1) and clamp three (4) is equal to the length of the middle section (13). Hydraulic cylinder one drives clamp two (2) to move between clamp one (1) and clamp three (4). The clamp one (1) / the clamp two (2) / the clamp three (4) includes: an arc clamp one, an arc clamp two and a driving component. The first end of the arc clamp one is rotatably connected to the first end of the arc clamp two. The driving component is used to drive the arc clamp one and / or the arc clamp two to rotate around the connection point. When in the clamped state, the gantry leg is located between the first arc-shaped clamp and the second arc-shaped clamp, and the first arc-shaped clamp and the second arc-shaped clamp exert a force on the gantry leg; When in the released state, the distance between the second end of the first arc-shaped clamp and the second end of the second arc-shaped clamp is greater than the diameter of the gantry leg; The methods for erecting cableway gantry frames include: S1. Connect the upper end of the gantry beam (11) to the upper section (12) of the gantry leg; connect the upper section (12) of the gantry leg to the middle section (13) of the gantry leg. S2. Move the erection device to the installation position, clamp one (1) clamps the upper section (12) of the gantry leg, clamp two (2) clamps the upper end of the middle section (13) of the gantry leg, and clamp three (4) clamps the lower end of the middle section (13) of the gantry leg. S3. Adjust the adjustment components to change the tilt angle of the gantry legs until the included angle of the gantry legs meets the installation requirements; S4. Release clamp two (2), control clamp two (2) to move towards clamp three (4), and after moving a distance, control clamp two (2) to clamp the lower end of the middle section (13) of the gantry support leg again; S5. Release clamp one (1) and clamp three (4), control clamp two (2) to move towards clamp one (1), and after moving a distance, control clamp two (2) to clamp the middle section (13) of the gantry leg again; at the same time, control the moving platform to make adaptive movements; S6. After raising the middle section (13) of the gantry leg to the set height, connect the lower section of the gantry leg to the lower end of the middle section (13) of the gantry leg. S7. Control clamp two (2) to move to clamp three (4) until the lower end of the gantry leg is placed on the ground and the erection device is removed.

2. The method of using the hydraulic lifting freight cableway gantry erection device according to claim 1, characterized in that, The mobile platform includes: a support plate (9) and a moving wheel disposed on the underside of the support plate (9); The support plate (9) is configured to have a first end and a second end. The lower end of the adjustment component is connected to the first end of the support plate (9). The frame (6) is connected to the middle part of the support plate (9). The second end of the support plate (9) is provided with a through groove that communicates with the middle part of the support plate (9). The through groove is used for the gantry support leg to pass through.

3. The method of using the hydraulic lifting freight cableway gantry erection device according to claim 2, characterized in that, The adjustment assembly includes a second hydraulic cylinder. The cylinder body (8) of the second hydraulic cylinder is hinged to the first end of the support plate (9), and the rod body (7) of the second hydraulic cylinder is hinged to the frame (6). The second hydraulic cylinder drives the frame (6) to rotate around the lower end of the frame (6).

4. The method of using the hydraulic lifting freight cableway gantry erection device according to claim 1, characterized in that, In step S2, clamp one (1) is clamped on the upper section (12) of the gantry leg near the lower flange; clamp two (2) is clamped on the middle section (13) of the gantry leg near the upper flange; clamp three (4) is clamped on the middle section (13) of the gantry leg near the lower flange.

5. The method of using the hydraulic lifting freight cableway gantry erection device according to claim 1, characterized in that, In step S4, the distance that clamp two (2) moves to clamp three (4) is 1 / 2 of the length of the middle section (13) of the gantry leg; In step S5, the distance that clamp 2 (2) moves to clamp 1 (1) is 1 / 2 of the length of the middle section (13) of the gantry leg.

6. The method of using the hydraulic lifting freight cableway gantry erection device according to claim 1, characterized in that, If the number of the middle sections (13) of the gantry legs is N, then step S5 specifically includes: S51. Release clamp one (1) and clamp three (4), control clamp two (2) to move towards clamp one (1), and after moving a distance, control clamp one (1) to clamp the middle section (13) of the gantry leg again. Set the middle section (13) of the gantry leg in this step as the nth one. S52. Connect the middle section (13) of the (n+1)th gantry leg to the lower end of the middle section (13) of the nth gantry leg, control clamp three (4) to clamp the middle section (13) of the (n+1)th gantry leg, and control clamp one (1) to clamp the middle section (13) of the nth gantry leg. S53, release clamp two (2), control clamp two (2) to move towards clamp three (4), after moving a distance, control clamp two (2) to clamp the middle section (13) of the n+1th gantry leg again. S54. Repeat steps S51 to S53 until the erection of the middle sections (13) of N gantry legs is completed.

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