Standing device

Abstract

To provide an erection device suitable for erecting a long member. [Solution] A raising device 1 for raising a long member H, comprising a pair of shaft supports 100 that rotatably support a pair of shafts 3 provided on the left and right sides of the long member H, a pair of support devices 200 that support the pair of shaft supports 100, a lifting device 300 that raises and lowers the pair of support devices 200 using a lift jack, and a crane 400 that lifts one longitudinal end 4 of the long member H and has adjustable lifting height and front-to-rear position, the pair of shafts 3 are positioned offset from the center of gravity C of the long member H, and the long member H rises up by rotating under its own weight around the pair of shafts 3 supported by the pair of shaft supports 100, and the crane 400 lifts the longitudinal end of the long member H that is on the same side as the center of gravity C relative to the pair of shafts 3, and raises the long member H while suppressing rotation due to its own weight.

Description

[Technical field]

[0001] The present invention relates to an erecting device for erecting an elongated member. [Background technology]

[0002] When updating or building new factory equipment, work may be required to erect and install long, heavy components. For example, when installing a rolling mill, installation work is performed to install a pair of housings that support the rolls, etc., and this requires erecting the long, heavy housings (some of which can weigh several hundred tons).

[0003] Patent Document 1 discloses an attitude reversing device for reversing (flipping) the attitude of a heavy workpiece relative to a reference plane. This attitude reversing device is configured as follows: (a) a base end of a support arm is rotatably attached to a bearing stand, (b) a gripper for supporting a heavy workpiece or the like is rotatably installed on the tip of the support arm on a rotation center line that is approximately parallel to the rotation center line of the support arm, (c) a sun gear having a center on the rotation center line of the support arm is fixed to the bearing stand, (d) a planetary gear that meshes with the sun gear is rotatably installed on the support arm, (e) a transmission mechanism is installed that transmits only unidirectional rotation of the planetary gear to the rotating shaft of the gripper via a one-way clutch, and (f) a drive means is installed that rotates the support arm up to 90°. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Special Publication No. 57-57395 Summary of the Invention [Problem to be solved by the invention]

[0005] When installing a rolling mill housing, it is possible to use an existing overhead crane, for example, to erect the housing, but there is a possibility that the capacity of the existing overhead crane will be insufficient for the length and weight of the housing.

[0006] Furthermore, in a configuration in which a support arm that is rotatably attached to a bearing stand is rotated, as in Patent Document 1, depending on the length and weight of the component, a large driving force is required, and a large load is applied to the support arm and the points that support it, which poses issues in terms of workability and safety when erecting a long, heavy component such as the housing of a rolling mill.

[0007] The present invention has been made in consideration of the above points, and has an object to provide an erection device that is suitable for erecting long members. [Means for solving the problem]

[0008] The present invention relates to a lifting device for raising a long member, and is characterized in that it comprises a pair of shaft supports which rotatably support a pair of shafts provided on the left and right sides of the long member, a pair of support devices which support the pair of shaft supports, a lifting device which raises and lowers the pair of support devices using a lift jack, and a crane which lifts one longitudinal end of the long member and has an adjustable lifting height and front-to-rear position, the pair of shafts being positioned offset from the center of gravity of the long member, the long member rising by rotating under its own weight around the pair of shafts supported by the pair of shaft supports, and the crane lifts one of the longitudinal ends of the long member which is on the same side as the center of gravity of the pair of shafts as the one end, and raises the long member while suppressing rotation under its own weight. Effect of the Invention

[0009] According to the present invention, it is possible to provide a raising device suitable for raising a long member. [Brief description of the drawings]

[0010] [Figure 1] 1 is a diagram showing a schematic configuration of a raising device according to an embodiment; [Diagram 2] 1 is a diagram showing a schematic configuration of a raising device according to an embodiment; [Diagram 3] 1 is a diagram showing a schematic configuration of a raising device according to an embodiment; [Figure 4] 1 is a diagram showing a schematic configuration of a raising device according to an embodiment; [Diagram 5] 1 is a diagram showing a schematic configuration of a raising device according to an embodiment; [Figure 6] FIG. 2 is a diagram showing a configuration of a portion of a raising device according to an embodiment. [Figure 7] 7 is a cross-sectional view taken along line AA in FIG. 6. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 5 are diagrams showing a schematic configuration of a raising device 1 according to an embodiment. Fig. 6 is a diagram showing a partial configuration of the raising device 1 according to an embodiment, and is a diagram for explaining the configuration on the inner side of a lift jack 301 of a lifting device 300. Fig. 7 is a cross-sectional view taken along line AA in Fig. 6.

[0012] In this embodiment, the housing H that supports rolls of a rolling mill, etc., is the long member referred to in this invention, and an erection device 1 for erecting a long and heavy housing H during installation work of the housing H will be described. In this application, the longitudinal direction of the elongated member (housing H) in a laid down state is defined as the front-to-rear direction, and both sides of that are defined as the left-to-right direction, and in each drawing, up-down, left-to-right, front-to-back are indicated by arrows as appropriate.

[0013] When the housing H is to be installed, left and right rails 2 extending in the front-rear direction are laid at the construction site. In this embodiment, the rails 2 are located above an installation surface G on which the housing H is to be installed.

[0014] Furthermore, trunnions that serve as shafts 3 are provided on the left and right side surfaces of the housing H. The pair of shafts 3 are disposed so as to be offset from the center of gravity C of the housing H. In this embodiment, when the housing H is laid down, the center of gravity C is disposed forward of the pair of shafts 3.

[0015] The erection device 1 includes a pair of shaft supports 100 that rotatably support a pair of shafts 3 provided on the left and right sides of the housing H, a pair of support devices 200 that support the pair of shaft supports 100, a lifting device 300 that raises and lowers the pair of support devices 200 with a lift jack, and a crane 400 that lifts one end of the housing H in the longitudinal direction and has variable lifting height and front-rear position. Of the longitudinal ends of the housing H, the front end on the same side as the center of gravity C with respect to the pair of shafts 3 is defined as one end 4.

[0016] The details of the erection device 1 will be described below, but to start with an overview, the pair of shafts 3 are positioned offset from the center of gravity C of the housing H, so that the housing H stands up by rotating under its own weight around the pair of shafts 3 supported by a pair of shaft supports 100, as shown in Figures 2 to 5. At that time, the crane 400 lifts one end 4 of the housing H and controls it to suppress the rotation of the housing H.

[0017] As shown in Figs. 6 and 7, the shaft support 100 has a shaft hole 101 having an elongated hole shape. In addition, a flange-shaped portion 3a having the same width as the short side direction of the shaft 3 and extending in an arc shape on both sides of the longitudinal direction of the housing H is provided at the tip of the shaft 3 (trunnion) provided in the housing H. As shown in Figs. 1 and 6, when the longitudinal direction of the shaft hole 101 is aligned with the longitudinal direction of the housing H, the flange-shaped portion 3a can pass through the shaft hole 101, so that the shaft support 100 can be attached to and detached from the shaft 3. On the other hand, as shown in Figs. 2 to 5, when the shaft support 100 is rotated around the shaft 3 to shift the longitudinal direction of the shaft hole 101 from the longitudinal direction of the housing H, the arc-shaped extension of the flange-shaped portion 3a engages with the edge of the shaft hole 101 and cannot pass through the shaft hole 101, so that the shaft support 100 cannot be attached to and detached from the shaft 3. In this way, depending on the position to which the pivot support 100 is rotated around the shaft 3, the pivot support 100 can be either detachable or non-detachable from the shaft 3. As shown in Fig. 1, the pivot support 100 is attached in advance to the shaft 3 of the housing H in a laid-down state (the housing H to be stood up).

[0018] The lifting device 300 includes front and rear lift jacks 301 that are movable on the rails 2 extending in the front and rear directions on the left and right sides of the housing H. That is, the lifting device 300 includes two lift jacks 301 on each of the left and right rails 2 that are movable in the front and rear directions, for a total of four lift jacks 301. The lift jacks 301 are also called power lifts. Specifically, each lift jack 301 includes a running body 302 that can run on the rails 2 and a rod 303 that can extend and retract up and down. As shown in FIG. 6 and FIG. 7, a front frame 304 that connects the two front lift jacks 301, a rear frame 305 that connects the two rear lift jacks 301, and a pair of left and right frames 306 that connect the front frame 304 and the rear frame 305 at both ends are installed on the upper ends of the four lift jacks 301. The four lift jacks 301 are integrally formed by a front frame 304, a rear frame 305, and a pair of left and right frames 306, which are connected at their upper ends by a frame-like frame.

[0019] As shown in Fig. 6 and Fig. 7, the support device 200 includes a front moving body 201F movable in the left-right direction along a front frame 304, a rear moving body 201R movable in the left-right direction along a rear frame 305, a beam member 202 installed between the front moving body 201F and the rear moving body 201R, and a support 203 connected to the beam member 202 and supporting the pivot support 100 so as to suspend it. The support 203 includes a turnbuckle 204F rotatably connected to the lower part of the front end of the beam member 202 and a turnbuckle 204R rotatably connected to the lower part of the rear end of the beam member 202, and the lower ends of the turnbuckles 204F and 204R are rotatably connected to the upper part of a link plate 205. The pivot support 100 is rotatably and detachably connected to the lower part of the link plate 205.

[0020] The crane 400 includes a first crane 401 and a second crane 402 located behind the first crane 401, and is movable in the forward and backward directions. For example, an existing overhead crane is used as the crane 400. The crane 400 only needs to be capable of controlling the rotation of the housing H.

[0021] Here, a bracket 4a is attached to one end 4 of the housing H. As shown in FIG. 1, the bracket 4a is arranged so as to face upward when the housing H is laid down. Then, as shown in FIG. 2, a support plate 5 having a substantially right-angled triangular shape is rotatably and detachably connected to the bracket 4a. Specifically, a corner 5b on one side of the hypotenuse of the support plate 5 is rotatably and detachably connected to the bracket 4a. The right angle portion 5a of the support plate 5 is a first connecting portion for detachably connecting to the first crane 401 via a wire 6. The corner 5c on the other side of the hypotenuse of the support plate 5 is located rearward of the right angle portion 5a, and the corner 5c is a second connecting portion for detachably connecting to the second crane 402 via a wire 7.

[0022] Next, an example of a process for erecting the housing H by the erection device 1 will be described. As shown in FIG. 1, a shaft support 100 is attached in advance to the shaft 3 of a housing H (a housing H to be stood up) in a lying state.

[0023] The erection device 1 is moved to the position of the housing H. At this time, while the housing H is in the laid-down state, the pivot support 100 is rotated about the axis 3 so that the longitudinal direction of the pivot hole 101 of the pivot support 100 faces up and down, and the pivot support 100 is connected to the lower part of the link plate 205 of the support device 200 (see FIG. 2). In addition, the corner 5b of the support plate 5 is connected to the bracket 4a at one end 4 of the housing H, and the right angle 5a of the support plate 5 is connected to the first crane 401 via the wire 6 (see FIG. 2).

[0024] In this state, the lifting device 300 is raised, and while adjusting the lifting height and front-rear position by the first crane 401, the housing H in the laid-down state is lifted up, and the erection device 1 moves the housing H to the installation position (or just before it). By moving the housing H to the installation position (or just before it) by the erection device 1 in this manner, no space is required in the installation area to temporarily receive the housing H.

[0025] As shown in FIG. 2, the housing H is moved to the installation position (or just before it) by the erection device 1, and then the lifting device 300 is raised to lift the housing H in a laid-down state to a predetermined height while adjusting the lifting height and front-to-rear position by the first crane 401.

[0026] 3, when the lifting height and front-rear position are adjusted by gradually lowering the lifting height of the first crane 401, the center of gravity C of the housing H is located on the same side (front side) of the pair of shafts 3, so that the one end 4 rotates in the downward direction (clockwise direction in FIGS. 2 to 5) under its own weight around the pair of shafts 3 supported by the pair of shaft supports 100, and stands up. The rotation of the housing H under its own weight is controlled by the first crane 401, so the housing H can be slowly stood up.

[0027] Here, if the housing H rises up and approaches the vertical, the first crane 401 will interfere with the front frame 304 of the lifting device 300. 4 and 5, the corner 5c of the support plate 5 is connected to the second crane 402 via the wire 7 at a position behind the front frame 304, and the connection between the right angle 5a of the support plate 5 and the first crane 401 is released, and the cranes 401 and 402 are switched. This prevents the first crane 401 from interfering with the front frame 304, and the second crane 402 can continue to lift one end 4 of the housing H. The lifting height and front-rear position of the second crane 402 are adjusted in the same way as the first crane 401, and the housing H is rotated by its own weight to stand up. Since the rotation of the housing H by its own weight is controlled by the second crane 402, the housing H can be slowly stood up.

[0028] In this manner, the housing H is installed in the installation position in a state where the housing H is vertically raised. After the housing H is installed, the shaft support 100 and the bracket 4a are removed from the housing H.

[0029] As described above, the erection device 1 is configured to include a pair of shaft supports 100, a pair of support devices 200, a lifting device 300, and a crane 400, and can efficiently erect a long and heavy housing H. In addition, when the housing H is erected, the load received by the pivot support 100 and the load received by the crane 400 may be appropriately divided. For example, the pivot support 100 may bear about 90% of the weight of the housing H, and the crane 400 may bear about 10% of the weight of the housing H. In this manner, it is possible to provide an erection device 1 suitable for erecting a long and heavy housing H.

[0030] Although the present invention has been described above with reference to the embodiments, the above embodiments are merely examples of the embodiment of the present invention, and the technical scope of the present invention should not be interpreted as being limited by these embodiments. In other words, the present invention can be embodied in various forms without departing from its technical idea or main features. In addition, the components of the raising device to which the present invention is applied are not limited to those described in the embodiment, and the structure, size, shape, materials, etc. may be appropriately designed and selected so as to ensure the necessary strength. [Explanation of symbols]

[0031] 1: raising device, 2: rail, 3: shaft, 3a: flange-shaped portion, 4: one end portion, 4a: bracket, 5: support plate, 6, 7: wire, 100: shaft support, 101: shaft hole, 200: support device, 201F: front moving body, 201R: rear moving body, 202: beam member, 203: support, 204F, 204R: turnbuckle, 205: link plate, 300: lifting device, 301: lift jack, 302: running body, 303: rod, 304: front frame, 305: rear frame, 306: left and right frames, 400: crane, 401: first crane, 402: second crane

Claims

1. A device for erecting an elongated member, comprising: A pair of shaft supports rotatably supporting a pair of shafts provided on the left and right sides of the elongated member, respectively; A pair of support devices each supporting the pair of shaft supports; A lifting device that lifts and lowers the pair of support devices using a lift jack; a crane that lifts one end of the long member in the longitudinal direction and has a variable lifting height and forward / backward position; the pair of shafts are disposed so as to be offset from a center of gravity of the elongated member, and the elongated member stands up by rotating under its own weight about the pair of shafts supported by the pair of shaft supports; The crane is a raising device characterized in that it lifts one of the longitudinal ends of the long member that is on the same side as the center of gravity position relative to the pair of axes as the one end, and raises the long member while suppressing rotation of the long member due to its own weight.

2. The lifting device is The lift jacks are provided on the left and right sides of the elongated member, and are capable of running on rails extending forward and backward.

2. The apparatus according to claim 1, wherein a front frame, a rear frame, a right frame and a left frame are mounted on upper ends of the four lift jacks.

3. The support device includes: a front movable body that is movable in the left-right direction along the front frame; a rear movable body movable in a left-right direction along the rear frame; a beam member disposed between the front moving body and the rear moving body; 3. The apparatus according to claim 2, further comprising a support member connected to the beam member for supporting the pivot support in a suspending manner.

4. The crane includes a first crane and a second crane disposed at a position shifted from the first crane in the front-rear direction, A support member rotatable relative to the elongated member is attached to the one end of the elongated member, The raising device according to any one of claims 1 to 3, characterized in that the support member is provided with a first connecting portion for detachably connecting to the first crane and a second connecting portion for detachably connecting to the second crane.

5. The raising device according to any one of claims 1 to 3, characterized in that the pivot support can be changed between a detachable state and an indetachable state with respect to the shaft depending on the position to which the pivot support is rotated around the shaft.

Images