JPH1143286A - Crane - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crane which is installed between a floor surface and a ceiling surface of a veranda and is suitable for house-moving time. SOLUTION: A frame body is formed by connecting a main leg 31, a sub-leg 32, an upper frame piece 34 and a base frame piece 33 to each other. A main leg jack 35 and a sub-leg jack 36 arranged the main leg 31 and the sub-leg 32 are extended, and are installed between a floor surface 3 and a ceiling surface 4. An installing pipe 47 is rotatably installed around the axis of the main leg 31. Pulleys are arranged on a support arm 49 extended sideways from the installing pipe 47. A cargo is raised/lowered by a winch 48.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crane to be transported to an appropriate place for use in moving operations.

[0002]

2. Description of the Related Art In a moving operation, particularly in moving an apartment or a condominium, a cargo is transported from a moving source room to the outside of a building, carried into a freight vehicle, and transported to a destination. In addition, the work of unloading the cargo from the cargo vehicle to the ground and then carrying the cargo into the moving destination room is performed. The moving operation for performing a series of operations at a plurality of places as described above is mainly performed manually by an operator. Especially in apartments and condominiums, it is necessary to go up and down narrow stairs,
The work was heavy labor. In recent years, a dedicated vehicle that moves up and down on rails that directly carry out and carry in from the veranda to the ground may be used.

[0003]

However, such a private vehicle must be parked under a veranda, and cannot be used in an apartment or condominium where such a parking space cannot be secured, and its use range is limited. Was. Therefore,
An object of the present invention is to provide a crane that can be used at an appropriate place.

[0004] In particular, it is an object of the present invention to provide a crane which can be transported to a veranda or the like so that cargo can be taken in and out from the veranda or the like. According to the fifth and sixth aspects of the present invention, it is installed in a freight vehicle to carry in / out the cargo.
It is intended to be a simple crane that can be carried out.

[0005]

According to the first aspect of the present invention, there is provided a crane mounted and fixed between a floor surface and a ceiling surface, wherein a main leg on which an arm provided with a pulley is rotatably mounted around its axis is provided. , A sub-leg arranged in parallel with the main leg, and upper and lower portions between the main leg and the sub-leg connected by an upper frame piece and a base frame piece to form a frame body, and the main leg and the sub-leg The leg jack or the auxiliary leg jack is configured to be extendable and contractable. With this configuration, when the base frame piece is placed on the floor of the veranda and jacked up by the main and sub jacks, the main leg and the sub leg are raised, and the upper frame piece presses the ceiling surface. Thereby, the crane is fixed between the floor surface and the ceiling surface of the veranda. The arm is horizontally rotated inside and outside the veranda by the fixed crane, and the load is conveyed to and from the ground. According to a second aspect of the present invention, in the first aspect of the invention, the arm is constituted by a mounting pipe which is rotatably fitted around the axis of the main leg, and a supporting arm extending laterally from the mounting pipe. I have.

According to the third aspect of the present invention, in a crane to be installed on a handrail, a main leg in which an arm provided with a pulley is rotatably mounted around an axis thereof, and a branch from an intermediate portion of the main leg, directed downward. It comprises a sub leg extending and a pressing member provided so as to press the side surface of the handrail from the main leg and / or the sub leg.
According to this configuration, the crane is placed on a handrail such as a veranda so as to straddle the main leg and the auxiliary leg, and the pressing member is tightened, so that the pressing member presses the side surface of the handrail to fix and install the crane. . Thus, the support rod can be horizontally rotated inside and outside the veranda, and the load can be conveyed to and from the ground. When the operation such as the moving operation is completed, the pressing member can be loosened and the crane can be removed from the handrail and removed. According to a fourth aspect of the present invention, in the third aspect of the present invention, the arm includes a support rod and a support arm extending laterally above the support rod, and the support rod is formed of a pipe material. It is rotatably inserted and attached to the upper part of the leg.

According to a fifth aspect of the present invention, there is provided a crane having a mounting rod erected along a rear frame of a cargo compartment of a freight vehicle and an arm provided with a pulley on the mounting rod so as to rotate freely around its axis. The arm is composed of a support rod and a support arm extending laterally above the support rod, and the support rod is rotatably inserted into and mounted on the rear frame. With this configuration,
The support rod is horizontally rotated by a crane installed upright on the rear frame to carry the cargo between the cargo compartment and the ground.
According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the support rod is divided at an intermediate portion by a hinge consisting of a lower plate and an upper plate pivotally mounted on one side of the lower plate. The lower half is fixed to the lower plate, and the upper half is fixed to the upper plate, so that the support rod of the upper half can be turned over. With this configuration, when running the transport vehicle, the upper half of the support rod is fallen on the roof of the cargo compartment by the hinge.

[0008]

According to the first aspect of the present invention, in a crane mounted and fixed between a floor surface and a ceiling surface, an arm provided with a pulley is rotatably mounted around its axis, and The upper and lower frames between the main leg and the sub leg are connected by the upper frame piece and the base frame piece respectively to form a frame body, and the main leg and the sub leg are connected to the main leg jack or the sub leg. By being configured to be extendable and retractable with leg jacks, it can be fixed between the floor and ceiling, and carry in / out luggage from the veranda.
The crane can be carried out and is suitable for moving.

According to a second aspect of the present invention, in the first aspect of the present invention, the arm includes a mounting pipe rotatably fitted around the axis of the main leg and a supporting arm extending laterally from the mounting pipe. Because it is configured, it can be a crane with a simple structure.

According to a third aspect of the present invention, there is provided a crane to be installed on a handrail such as a veranda, wherein the main leg and a sub-leg that straddles the handrail in parallel to the main leg via a branch arm branched from the middle of the main leg. A pressing member provided on one of the main leg and the sub leg to press the side surface of the handrail, and an arm rotatably mounted on the upper portion of the main leg around its axis and suspending the pulley. By doing so, it can be installed on the handrail of the veranda and carry in and out of the baggage from the veranda,
A crane suitable for operations such as moving can be provided.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the arm comprises a supporting rod and a supporting arm extending laterally above the supporting rod, and the supporting rod comprises a pipe member. Since it is rotatably inserted and mounted on the upper portion of the main landing gear, a crane having a simple structure can be provided.

According to a fifth aspect of the present invention, there is provided a crane in which a mounting rod erected along a rear frame of a cargo compartment of a freight vehicle and an arm provided with a pulley on the mounting rod are rotatably mounted around its axis. The arm is composed of a support rod and a support arm extending laterally above the support rod, and the support rod is rotatably inserted into the rear frame and is attached, so that the It is possible to provide a crane that can easily perform loading and unloading operations.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the support rod is divided at an intermediate portion thereof by a hinge comprising a lower plate and an upper plate axially mounted on one side of the lower plate. The lower half of the support rod is fixed to the lower plate, and the upper half is fixed to the upper plate, so that the upper half of the support rod can be overturned. , And can be easily set up and used.

[0014]

Embodiments of the present invention will be described below in detail. (Embodiment 1) A crane 30 according to Embodiment 1 corresponding to claims 1 and 2 is fixed between a floor 3 and a ceiling 4 such as a veranda 1 of an apartment as shown in FIGS. Is used. As shown in FIGS. 1 and 2, the main leg 31 and the sub leg 32 are erected in parallel, and the main leg 31 and the sub leg 3
The lower ends of the two are connected by a base frame piece 33. The upper ends of the main leg 31 and the sub leg 32 are connected by an upper frame piece 34, and a frame is formed by these.

The main leg 31 is made of a square pipe material, and a screw rod 35a is inserted into a lower end opening thereof.
A female screw member 35b is screwed into 5a to support the lower end of the main leg 31. An operation rod 35c is provided on the female screw member 35b, and a main leg jack 35 that raises and lowers the main leg 31 by attaching and rotating an operation rod (not shown) to the operation rod 35c is configured.

The sub leg 32 has substantially the same structure as the main leg 31, is made of a square pipe material, and has a screw rod 36a inserted into the lower end opening thereof and a lower end of the sub leg 32 screwed into the screw rod 36a. The auxiliary leg jack 36 is constituted by the female screw member 36b supporting the portion. The base frame piece 33 is made of a square pipe material, and threaded rods 35a, 36a are swingable freely by front and rear portions (left and right portions in FIG. 1) by lower pins 37a, 37b as shown in FIG. Pinned to. Thereby, the main and sub legs 31 and 32 are attached to the base frame piece 33 so as to be swingable in the front-rear direction. A horizontal arm 38 is fixed to the front and rear ends of the base frame piece 33, as shown in FIG. 2, so as to stand up when the crane 30 is fixed. In addition, between the base frame piece 33 and the lateral arm 38, the main and sub legs 31, 3, 3
2 is reliably prevented from falling in the left-right direction.

At the upper ends of the main and sub legs 31, 32, the front and rear portions of the upper frame piece 34 are swingably pinned by upper pins 40a, 40b as in the lower portion. Also, the main and sub legs 31,
An auxiliary arm 41 is rotatably hung around an intermediate portion of 32 by intermediate pins 42a and 42b. In addition, between the main leg 31 and the upper frame piece 34, brace wires 43, 44, and 45 whose lengths can be adjusted by a tan buckle are attached at three places to hold the frame body in a predetermined shape. ing. Therefore, when the crane 30 is placed on the floor 3 of the veranda 1 and the main leg jack 35 and the sub leg jack 36 are operated to raise the main and sub legs 31, 32 respectively, the upper frame piece 34 is raised, As shown in FIG. 1, the upper frame piece 34 presses the ceiling surface 4 and the crane 30 is fixed.

As shown in FIG. 4, a support flange 46 is provided on the intermediate outer periphery of the main leg 31, and the lower end of the mounting tube 47 is supported on the support flange 46 of the main leg 31. The mounting pipe 47 is formed of a round pipe having an inner diameter cross section that circumscribes the main leg 31 formed of a square pipe. The mounting pipe 47 is externally fitted to the main leg 31 and is rotatable around its axis. Mounting pipe 47
A winch 48 is fixed to the lower part of the arm, and an arm 49 is provided to protrude horizontally at the upper part. The suspension wire W pulled out from the winch 48 is hung on the pulleys 50a and 50b attached to the intermediate portion and the distal end of the arm 49, and is suspended downward from the pulley 50b at the distal end (see FIG. 1). A hook Wa for lifting cargo (not shown) is provided at the tip of the hanging wire W, and the hook Wa moves up and down by driving the winch 48.

Next, a description will be given of a case where the operation of the first embodiment is used on a veranda 1 of a condominium. As shown in FIGS. 1 and 2, a base frame piece 33 is placed on the floor 3 of the veranda 1. And the screw rod 35 of the main leg 31 and the sub leg 32
a, 35b are swingably attached by lower pins 37a, 37b. Similarly, for the upper frame piece 34, the main leg 3
1 and the sub-leg 32 are swingably attached by the upper pins 40a and 40b to form a frame. Next, the main and sub jacks 3
An operation rod (not shown) is attached to each of 5 and 36, and the operation rod is rotated and jacked up. As a result, the main leg 31 and the sub leg 32 rise, and the upper frame piece 34 comes into contact with the ceiling surface 4 and presses it. Then, the length of each brace wire 43, 44, 45 is adjusted by the respective turnbuckle, and the frame is fixed so as not to be distorted even when the cargo is hung. As a result, the crane 30 can move the floor 3 and the ceiling 4 of the veranda 1.
Fixed between. The arm 49 is horizontally rotated inside and outside the veranda 1 by the crane 30 fixed to the veranda 1 in this manner, and the load is conveyed to and from the ground. When the operation of transporting the load is completed, the main and sub jacks 35 and 36 are rotated to loosen the jacks, and then the main leg 31 and the sub leg 32 are removed from the upper frame piece 34 and the base frame piece 33 and disassembled. Thereby, the crane 3
0 can be carried out of the apartment.

As shown in FIG. 5, when the floor 3 of the veranda has an inclination or irregularities, the base frame 3
A sleeper B or the like is placed at one end of 3 so that the base frame piece 33 does not rattle. At this time, the base frame piece 33 is swingably connected to the main and sub legs 31 and 32 by lower pins 37a and 37b, and the upper frame piece 34 is connected to the main and sub legs 31 and 32.
2, the upper frame piece 34 is attached to and fixed to the ceiling surface 4 even when the main and sub legs 31 and 32 are vertically or inclined because they are swingably connected to each other by the upper pins 40a and 40b. be able to. In particular, by mounting the main leg 31 in a position inclined slightly backward from the vertical, even heavier cargo can be lifted safely.

In this embodiment, the base frame 3
The lower pin 37 which makes the main and sub legs 31 and 32 swingable.
a and 37b, the upper frame piece 34 may be connected to the main and sub legs 31 and 32 by the upper pins 40a and 40b so as to be swingable, and the lower end of the main leg 31 is connected to the base frame piece 33. May be fixed so as not to swing.

In the above-described embodiment, the mounting pipe 4
In the example shown in FIG. 6, a hinge 52 which swings in the horizontal direction is fixed to the main leg 31, and an arm 49 is attached to the main leg 31, as shown in FIG. It is good also as composition which attaches. In this case, winch 48
Is attached to the arm 49.

(Embodiment 2) A crane 10 according to a second embodiment of the present invention corresponds to claims 3 and 4, as shown in FIGS. 7 to 11, a concrete handrail standing upright on a veranda 1 of an apartment building. 2 is installed.

As shown in FIG. 7, a long main leg 11 has
An arm is provided. The arm includes a support rod 12 rotatably attached to the main leg 11, and a support arm 13 fixed to the upper end of the support rod 12 in a horizontal direction. 14b is suspended. A winch 15 is fixed to the side of the support rod 12, and a suspension wire W
Are sequentially hung on the pulleys 14a and 14b, and the pulley 1 at the tip is
4b is suspended downward. A hook Wa for lifting the cargo is provided at the tip of the hanging wire W, and the hook Wa moves up and down by driving the winch 15.

The main leg 11 is made of a long square pipe material.
As shown in FIG. 8, a horizontal arm 16 formed of a square pipe is fixed to the lower end, and the inner surface is formed so as to be flush with the inner surface of the main leg 11. This prevents the main leg 11 from rotating around its axis. In addition, side arm 1
Numeral 6 makes the left side of the main leg 11 shorter than the right side so that it can be mounted near the end of the handrail 2 (normally, an iron frame is often provided inside). You can also.

Further, one end of a branch arm 17 is fixed to a middle portion of the main leg 11 so as to protrude horizontally by a fixing bolt 18. A sub-leg 19 made of the same square pipe material as the main leg 11 is fixed in parallel with the main leg 11 from the tip of the branch arm 17, and the main leg 11 and the sub-leg 19 can be attached across the handrail 2. Have been able to. At the lower end of the sub leg 19, a sub lateral arm 20 is fixed similarly to the main leg 11.
Press members 21, 21 made of screw rods are attached to two places in the middle part of the sub-leg 19, and as shown in FIG.
After the handrail 2 is straddled between the main leg 11 and the auxiliary leg 19, the side surfaces of the handrail 2 are pressed by the pressing members 21 and 21,
It can be fixed. At this time, the pressing member 21,
If a plate piece A or the like is sandwiched and fixed to the tip of the
Can be securely installed without damage.

As shown in FIG. 9, the branch arm 17 is fixed by fixing bolts 18 and 18 with two U-shaped members back to back and sandwiching both side surfaces of the main leg 11 and the sub leg 19 respectively. I have. In the middle part of the branch arm 17, a branch arm 17
The support plate 22 is fixed orthogonally to the main plate 11, and the support plate 22 prevents the main leg 11 from falling down in a direction orthogonal to the plane of FIG. At the upper end of the main leg 11, a support flange 23 is provided as shown in FIG.

The support rod 12 includes a main leg 11 made of a square pipe.
A receiving flange 24 is provided on an intermediate outer periphery of the pipe, and is supported in contact with a supporting flange 23. Thus, the lower half of the support rod 12 is inserted into the main leg 11 and is supported by the main leg 11.

FIGS. 10 and 11 show the lower end surface of the support rod 12.
As shown in FIG. 5, a cover plate 25 is fixedly provided, and a pin hole 25a is provided in the center of the cover plate 25. A bolt insertion tube 26 is attached to the pin hole 25a so as to be horizontally rotatable. This bolt insertion tube 26 is formed of a pipe having both ends opened,
The tip of a pin 26a with a head is welded to the central outer peripheral surface. Then, a mounting bolt 27 is inserted into a bolt hole formed in the main leg 11 through the bolt insertion tube 26 and is fixedly mounted. As a result, the support rod 12 is
It is rotatably stopped against. In FIG. 7, reference numeral 28 denotes a brace for reinforcing the support arm 13, and reference numeral 29 denotes a reinforcing wire interposed with a turnbuckle to adjust the length thereof.

Next, the operation of the second embodiment will be described.
And straddle it inside. Thus, the support plate 22 is placed in contact with the upper surface of the handrail 2. Then, after inserting the plate piece A between the inner surface of the handrail 2 and the pressing members 21, 21, the pressing members 21, 21 are tightened. This allows
The crane 10 is fixed to the handrail 2. The main landing gear 11
The horizontal arm 16 in contact with the outer surface of the handrail 2 prevents the main leg 11 from being twisted even if a horizontal twisting force acts on the main leg 11. Thus, the crane 10 is firmly fixed to the handrail 2 and installed. This fixed crane 10
Thereby, the support rod 12 is horizontally rotated inside and outside the veranda, and the load is conveyed to and from the ground. When the moving operation is completed, the pressing member 21 is loosened and the crane 10
Is removed from the handrail 2 and removed. Further, by removing the mounting bolt 27 and pulling out the support rod 12 from the main leg 11, it is possible to carry each separately. Thus, the crane according to the first embodiment includes the support rod 12
(Arm) and the main landing gear 11 can be disassembled and transported to a crane installation location such as a condominium veranda,
And it can be easily installed on the handrail. In addition, by carrying in / out the luggage from the veranda, operations such as moving can be easily performed.

In the second embodiment, the pressing member 2
Although the example in which the sub-legs 19 and 21 are provided is shown, the pressing member 2
1 and 21 may be provided on the main leg 11 side. In this case, the main leg 11 can be arranged inside the handrail 2, and the auxiliary leg 19 can be used in contact with the outer surface of the handrail 2. Although the main leg 11 is formed of a square pipe material and the support rod 12 is formed of a round pipe, the material may be appropriately selected such as a round pipe for both materials.

(Third Embodiment) A crane 60 according to a third embodiment of the present invention transports between the ground and the cargo compartment 5 of a freight vehicle as shown in FIGS. The crane is mounted on the rear frame 6 of the cargo hold 5.

As shown in FIG. 12, the cargo compartment 5 of the cargo vehicle
Along the rear frame 6, a mounting rod 6 made of a square pipe
1 is fixed. As shown in FIG.
As shown in FIG. 3, a support flange 62 is provided.
The lower part of a support rod 63 made of a round pipe is inserted into and attached to the mounting rod 61. A support arm 64 is horizontally fixed to the upper end of the support rod 63.
Pulleys 65a and 65b are suspended from the middle part and the tip part of No.4.

The support rod 63 is divided into a lower half and an upper half by a hinge 67, and the lower half of the support rod 63 is
A receiving flange 66 is provided at the upper portion thereof and abuts on the support flange 62. The hinge 67 is welded to the fixed piece 67a of the hinge 67 at the upper end of the lower half. The lower end of the upper half of the support rod 63 is welded to the swinging piece 67 b of the hinge 67. Then, between the fixed piece 67a and the swinging piece 67b, the two pieces are tightly fixed by a fastening bolt 67c to form a support rod 63.

The winch 68 is fixed to the tip of the fixing piece 67a, and the suspension wire W
Are sequentially hung on the pulleys 65a and 65b, and the pulley 6 at the tip is
5b is suspended downward. A hook Wa for lifting cargo (not shown) is provided at the tip of the suspending wire W.
Are provided, and the hook Wa is moved up and down by driving the winch 68.

As shown in FIG. 14, a cover plate 69 is fixed to the lower half of the support rod 63, and a pin hole 69a is provided in the center thereof. Are mounted to be horizontally rotatable. The bolt insertion pipe 70 is formed of a pipe having both ends opened, and the tip of a pin 70a with a head is welded to the central outer peripheral surface.
Then, the mounting bolt 71 is inserted and fixed through the mounting hole formed in the mounting rod 61 through the bolt insertion pipe 70 (see FIG. 15). Thus, the support rod 63 is rotatably retained with respect to the mounting rod 61. FIG.
In 3, reference numeral 72 denotes a brace for reinforcing the support arm 64, and reference numeral 73 denotes a reinforcing wire.

Next, the operation of the third embodiment will be described. A crane 60 provided along the rear frame 6
The support rod 63 is rotated horizontally to carry the cargo between the cargo compartment and the ground. When the transport of the load is completed, the fastening bolt 67c of the hinge 67 is removed and the support rod 63 is removed.
Of the cargo compartment 5 on the roof (see FIG. 16). This allows the transport vehicle to travel.

17 and 18 show an example in which a reinforcing plate 76 is provided below the hinge 67. A hook 77 is provided above the supporting rod 63, and the tip of the reinforcing plate 76 and the hook 77 are provided. An example is shown in which a support wire 78 is stretched in a brace-like manner between them, thereby reinforcing the support rod 63 so that heavier cargo can be hung. Also,
In the third embodiment described above, an example in which the lower half and the upper half of the support rod 63 are connected via the hinge 67 has been described, but the lower half and the upper half are divided without providing the hinge 67. It is also possible to use a single support rod 63 which is not used.
In such a case, the vehicle can be run with the mounting bolt 71 removed from the bolt insertion tube 70 and the support rod 63 removed from the mounting rod 61.

[Brief description of the drawings]

FIG. 1 is an overall side view of a first embodiment.

FIG. 2 is a front view of the same.

FIG. 3 is an enlarged side view of the jack.

FIG. 4 is an enlarged cross-sectional view of an intermediate portion of the same.

FIG. 5 is a side view showing a state where the plate piece B is attached by being swaged.

FIG. 6 is a partially enlarged side view showing another example of the same.

FIG. 7 is an overall side view of the second embodiment.

FIG. 8 is an enlarged perspective view of a lower portion of the same.

FIG. 9 is an enlarged perspective view of an intermediate portion of the same.

FIG. 10 is an enlarged cross-sectional view of the same intermediate portion.

FIG. 11 is an enlarged sectional view of the bolt insertion tube.

FIG. 12 is a schematic diagram of a third embodiment.

FIG. 13 is an overall perspective view of the same.

FIG. 14 is a partially cutaway side view showing the support column separately.

FIG. 15 is a partially cutaway side view showing the mounting state of the support column.

FIG. 16 is a side view showing the state during transportation.

FIG. 17 is a partial cross-sectional view showing another example.

FIG. 18 is a side view showing another example of the same.

[Explanation of symbols]

 W ... hanging wire 1 ... veranda 3 ... floor surface 4 ... ceiling surface 30 ... crane 31 ... main leg 32 ... sub leg 33 ... base frame piece 34 ... upper frame piece 35 ... main leg jack 36 ... sub leg jack 48 ... winch 50a, 50b ... pulley

Claims (6)

[Claims] 1. A crane mounted and fixed between a floor and a ceiling such as a veranda, comprising: a main leg having a pulley provided arm rotatably around its axis; The sub leg provided, and the upper and lower portions between the main leg and the sub leg are connected by an upper frame piece and a base frame piece respectively to form a frame, and the main leg and the sub leg are connected to a main leg jack or A crane characterized by being configured to be extendable and retractable by a sub-leg jack. 2. The arm according to claim 1, wherein the arm comprises a mounting tube rotatably fitted around the axis of the main leg, and a supporting arm extending laterally from the mounting tube. The crane according to 1. 3. A crane to be mounted on a handrail such as a veranda, wherein a main arm provided with an arm provided with a pulley is rotatably mounted around its axis, and branches downward from an intermediate portion of the main arm and extends downward. A crane comprising: a sub leg; and a pressing member provided so as to press a side surface of the handrail from the main leg and / or the sub leg. 4. The arm includes a support rod and a support arm extending laterally above the support rod, and the support rod is rotatably inserted into an upper part of a main leg formed of a pipe material. 4. The crane according to claim 3, wherein the crane is mounted. 5. A crane in which a mounting rod erected along a rear frame of a cargo compartment of a freight vehicle and an arm provided with a pulley on the mounting rod is rotatably mounted around its axis. A crane comprising a support rod and a support arm extending laterally above the support rod, wherein the support rod is rotatably inserted into and mounted on the rear frame. 6. The support rod is divided at its intermediate portion by a hinge consisting of a lower plate and an upper plate pivotally mounted on one side of the lower plate, and a lower half of the support rod is connected to the lower plate. Fixed to
6. The crane according to claim 5, wherein the upper half is fixed to an upper plate so that a support rod of the upper half can be turned over.