JPH04358698A - Carriage type crane - Google Patents

Abstract

PURPOSE:To provide a carriage type crane having a compact structure which can be used for the construction of a partition wall as well as an outer wall. CONSTITUTION:A fixed mast 2 is provided upright and secured on a carriage 1 and an elevation mast 3 is provided on the fixed mast 2 so as to be freely elevated or lowered. Further, a boom attaching base 4 is mounted on the elevation mast 3 so as to be freely elevated or lowered. A vertical boom 6 is substantially vertically provided on the boom attaching base 4. To the upper end of the vertical boom 6, the rear end of a traverse boom 8 is connected so as to be freely folded through a fulcrum shaft 7. The traverse boom 8 is detachably attached with the end of a brace member 10 abutting against the bearing plate 12 of the vertical boom 6 and extends slantwise and upward in the front part of the carriage.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a trolley-type crane, and in particular, it is capable of lifting construction boards such as lightweight aerated concrete and attaching them to the building frame on each floor, and is useful for moving between floors. Concerning a trolley-type crane with a compact structure that does not cause any problems.

0002

[Prior Art] Conventionally, a mast and an elevating mast that ascends and descends along the mast are provided on a large truck, a boom is provided at the tip of the elevating mast, and a hook that can be lifted by a wire is provided at the tip of the boom. There was a large trolley type crane. Construction materials such as concrete plates were hung from the hook at the tip of this crane, lifted from the ground to the desired floor, and then attached to the building frame.

0003

[Problem to be solved by the invention] However, although it is possible to construct walls that face the road or large open spaces using conventional cranes, it is impossible to construct walls that are close to neighboring buildings, etc. It is. To install wallboards on buildings adjacent to neighboring buildings, it is necessary to move the crane inside the building, but with conventional tall cranes, it is necessary to move the crane to the upper floor of the building. It was impossible to put it on an elevator, etc., and it was impossible to use it in a building with an upper floor.

[0004] The object of the present invention is that it can be used when installing a wall plate in a building adjacent to a neighboring building, etc., and can be placed on the indoor side even in a building with a floor on the upper floor. To provide a trolley type crane having a compact structure that can be used not only for construction of walls but also for construction of external walls.

[0005]

[Means for Solving the Problems] However, in the present invention, a fixed mast (2) is erected and fixed on a truck (1), and an elevating mast (3) is provided on the fixed mast (2) so as to be movable up and down. Furthermore, a boom mount (4) is attached to the elevating mast (3) so as to be able to rise and fall freely, and a vertical boom (4) is attached to the boom mount (4).
6) is erected approximately vertically, and has a structure in which the rear end of a horizontal boom (8) is bendably connected to the upper end of the vertical boom (6) via a fulcrum shaft (7). The horizontal boom (8) is structured so that it can extend diagonally upward in front of the truck (1), and the horizontal boom (8) is attached to the brace body (10) via a support shaft (9) provided at the intermediate portion. is connected to one end of the brace body (
10) The other end of the vertical boom (6) is brought into contact with a receiving plate (12) fixed to the middle part near the lower end of the vertical boom (6), and the receiving plate (12)
The brace body (10) can be attached and detached at this part, and by detaching the end of the brace body (10) from the receiving plate (12), the horizontal boom (8) can be folded toward the vertical boom (6). This is a trolley type crane characterized by being configured so that it can be bent and folded.

A second invention device of the present invention is the above-described first invention device of the present invention, in which a load chain (1
4), and both ends of the load chain (14) are connected to the horizontal bar (15) integrally fixed to the fixed mast (2) at a position near the upper end of the fixed mast (2). It is connected and fixed to the boom mount (4), and the trolley (1)
) above the hydraulic cylinder (16), and the tip of the piston (17) of the hydraulic cylinder (16) is connected to the lifting mast (
3) Connected and fixed to the upper end of the hydraulic cylinder (
16), the lifting mast (3) is driven up and down, and the lifting mast (3) is driven up and down to raise and lower the boom mount (4) via the load chain (14). The load wire (24) suspended from the tip of the horizontal boom (8) passes through the pulley (23) at the tip of the horizontal boom (8), and then connects to the pulley (22) at the base end of the horizontal boom (8) and the boom. Mounting stand (4)
via the pulley (21) on the upper end of the lifting mast (3) and the pulleys (20) (19) at the upper end of the lifting mast (3), and then to the winch (18) fixed to the crosspiece (15) at the upper end of the fixed mast (2). This is a trolley-type crane characterized by a structure that allows it to be rolled up and unrolled.

[0007] In the third invention device of the present invention, rear wheels (30) (30) are arranged on the rear left and right, and front wheels (31) are arranged on the front left and right.
(31), the whole is configured in an H-shape in plan, and has a fixed mast (2) for the crane in the center of the H-shape (
1) has a structure, and includes a drive unit case (35) and a running part (41) behind the fixed mast (2),
The running section (41) is provided with a drivable running wheel (40), and the drive unit case (35) and the running section (4
1), and the drive unit case (35
) are vertically flat two parallel links (46) (46
) through which the mast (2) is fixed in front by a pin connection.
The traveling part (41) is connected to the drive unit case (
35) and parallel links (46) (46), the crane is structured so that it can move up and down a little with respect to the trolley (1).

[0008] A fourth invention device of the present invention is installed in the third invention device described above, and has a vertically elongated carriage on the left and right truck portions located parallel to the drive unit case (35) when viewed from the top. This is a trolley type crane characterized by being equipped with flat side weights (45).

[0009] A fifth inventive device of the present invention has a running section (41
) has a driving wheel (40) with an operating handle (38) at its upper end.
) so that the running wheel (40) is connected to the operating handle (38).
It has a structure that allows the direction to be changed by changing the direction of the trolley (1), and front wheels (31) (31)
The orientation of the trolley (1) can be fixed in the length direction of the trolley (1).
) is a trolley-type crane characterized by a structure that allows it to be fixed horizontally.

A sixth invention device of the present invention is the fifth invention device described above, wherein a fixed mast (2) is erected and fixed on the trolley (1), and a fixed mast (2) is fixed to the fixed mast (2). An elevating mast (3) is provided so as to be movable up and down, and a boom mounting base (4) is attached to the elevating mast (3) so as to be movable up and down,
A vertical boom (6) is installed approximately vertically on the boom mounting base (4), and the rear end of the horizontal boom (8) can be freely bent via a fulcrum shaft (7) at the upper end of the vertical boom (6). The horizontal boom (8) has a structure that allows the horizontal boom (8) to extend diagonally upward in front of the truck (1), and the horizontal boom (8)
) is connected to the brace body (10
), and the other end of the brace (10) is connected to a receiving plate (1) fixed to the middle part near the lower end of the vertical boom (6).
2), and the brace body (1) is brought into contact with the receiving plate (12).
0) can be attached and detached, and when the receiving plate (12) detaches the end of the brace body (10), the horizontal boom (8)
This is a trolley-type crane characterized in that it is configured to be folded by being bent toward a vertical boom (6).

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in detail below based on illustrated embodiments. The trolley type crane shown in this embodiment includes a side view of the entire device in FIG. 1, a detailed side view of the trolley section in FIG. 2, a detailed side view of the boom section in FIG. 3, and a plan view of the entire device in FIG. As shown in the rear view of the entire device in Figure 5, the trolley (
A fixed mast (2) is erected and fixed on top of 1), an elevating mast (3) is provided on the fixed mast (2) so that it can be raised and lowered, and a boom mounting base (4) is also attached to the elevating mast (3) so that it can be raised and lowered. The vertical boom (6) is installed approximately vertically on the boom mount (4). A fulcrum shaft (7) is attached to the upper end of this vertical boom (6).
The rear end of the horizontal boom (8) is bendably connected to the rear end of the horizontal boom (8). In addition, the vertical boom (6) can be fixed to the boom mount (4) and installed almost vertically, or it can be installed vertically on the boom mount (4) via the support shaft (5) as shown in the figure. The boom (6) may be installed substantially vertically so that it can rotate horizontally by about 15 degrees, for example. In this case, you can also insert a pin to prevent rotation. Of course, in this case, rotation can be made possible by removing the pin.

This horizontal boom (8) is installed diagonally upward in front of the truck, and as shown in the detailed side view of the boom portion in FIG. shaft(
One end of the bracing body (10) is connected via the support plate (10), and the receiving plate (1
2), the other end of the brace body (10) is brought into contact with the brace body (10), and attachment/detachment is possible at this receiving plate (12) portion.
0) allows the horizontal boom (8) to extend diagonally upward in front of the truck. Since the vertical boom (6) and horizontal boom (8) are configured in this way, lower the elevating mast (3) and boom mounting base (4) to the lowest position, and follow the imaginary lines in Figures 1 and 2. As shown, the brace body (
10), the tip of the horizontal boom (8) is lowered, and the horizontal boom (8) is folded toward the vertical boom (6). When fixing the lower part of the brace body (10) in contact with the vertical boom (6) in this way, after placing the brace body (10) on the receiving plate (12), Insert the pin (
11) etc., and then insert the pin (11) etc. into the receiving plate (1).
2) to prevent the brace body (10) from falling off the receiving plate (12) due to vibration or the like. Also, when separating the lower part of the brace body (10) from the vertical boom (6) in order to fold the horizontal boom (8), the brace body (1
0) from the receiving plate (12) is removed, the brace body (10) remains placed on the receiving plate (12). Body (1
The pin (11) and the like can be removed without worrying about the pin (11) falling off.

As seen in FIGS. 5 and 6, the middle of the load chain (14) is stretched around the sprocket (13) provided at the upper end of the lifting mast (3), and the load chain (14) The both ends of the horizontal beam (
15) and the boom mounting base (4), a hydraulic cylinder (16) is erected on the trolley (1), and the tip of the piston (17) of the hydraulic cylinder (16) is moved up and down. It is connected and fixed to the upper end of the mast (3). With this structure, the lifting mast (3) is driven up and down by controlling the hydraulic cylinder (16), and the load chain (1) is driven up and down by driving the lifting mast (3) up and down.
4), the boom mounting base (4) is raised and lowered.

Furthermore, as shown in FIG. 6, an electric winch (18) is attached to the horizontal beam (15) at the upper end of the fixed mast (2).
The load wire (24) wound around the electric winch (18) passes through the pulleys (19) and (20) at the upper end of the lifting mast (3), and then through the pulley on the boom mount (4). (21) and the pulley (2) at the base end of the horizontal boom (8).
2) and the pulley (23) at the tip of the horizontal boom (8).
The load wire (24) is suspended from the tip of the horizontal boom (8), and the tip of the load wire (24) has a hook weight (2) with a hook (25) removably fixed to the bottom by a pin (27).
8) is removably fixed to the upper end with a pin (26). These two pins (26) and (27) are pins that are pulled out to separate the hook (25) and load wire (24) when it is necessary to replace the load wire (24) with a new one. The hook (25) is configured to move up and down depending on the up and down of the load wire (24). Since the load wire (24) is stretched as described above, even if the lifting mast (3) and the boom mounting base (4) are raised and lowered by the hydraulic cylinder (16), and the horizontal boom (8) is folded. , load wire (24)
The distance from the pulley (23) at the tip of the horizontal boom (8) to the hook (25), that is, the hanging length of the hook (25) can be kept approximately constant. Furthermore, as shown by the imaginary lines in FIGS. 1 and 2, when the horizontal boom (8) is folded toward the vertical boom (6), the hook (25) is attached to the vertical boom. The hook (25) is hung on a hook fixed at the lower front of (6), and is configured to prevent the hook (25) from wandering when the crane shown in this drawing is moved by driving the running wheels (40), which will be described later. ing.

2 and 4 on the left and right sides of the trolley (1).
As shown in the figure, outriggers (29) (29) that can be extended left and right are installed to prevent the lift mast (3) and vertical boom (6) from tipping over even when they reach their highest positions. . When these outriggers (29) (29) are extended, they are fixed by inserting a pin into their bases, but in order to facilitate the work of extending these outriggers (29) (29), the outriggers (29) (29) as shown in the figure are used. 29) (29)
) is provided with a shaft that can be fixed in height by adjusting the height, and the freely movable wheels (29a) (29a) provided at the ends of the outriggers (29) (29) as shown in the figure are attached to the floor surface etc. so that the outriggers (29) (29) can be extended so that they are in contact with the Also, although it is different from this diagram, the tip of the shaft that can be fixed to the tip of the outrigger (29) by adjusting the height is attached to the wheel (29a) (29a).
Instead, it may be made into a pad.

Furthermore, if the trolley (1) is constructed in an H-shape in plan view, as shown in FIGS. 2, 4, and 7, weight can be reduced without sacrificing stability. Then, rear wheels (30) (30) are arranged on the rear left and right sides of the trolley (1), and front wheels (30) are arranged on the front left and right sides.
1) (31) are arranged, the rear wheels (30) (30) are attached to the trolley (1) via a vertical shaft that can freely change direction, and the front wheels (31) (31) are arranged as shown in Fig. 4 and Fig. 4. As shown in 7, a disc-shaped pedestal (34') is attached to the trolley (1) through a vertical shaft (32) so as to be freely changeable in direction. Use the steering lever (33) to steer the front wheels (31) in the front-rear direction or left-right direction, and when the direction is changed back-to-back or left-right, the lock pin (
34) restricts the horizontal rotation of the front wheels (31), and by changing the direction of the front wheels (31) in the front-back direction and supporting them, the trolley (1) can travel in the front-back direction, and the front wheels (31) The truck (1) is configured to travel and move in the left-right direction by supporting the truck (1) by changing its direction in the left-right direction.

Furthermore, as shown in FIGS. 1, 2, 4, 7, etc., there is a hydraulic drive mechanism including a hydraulic motor, an electric motor that drives the hydraulic motor, and the electric winch ( A drive unit case (35) containing a built-in battery etc. as a power source is provided behind the fixed mast (2), and as shown in FIG. A wheel cover (37) is integrally connected to the rear of the drive unit case (35) via stays (36) (36) provided parallel to each other,
A direction operation shaft (39) having an operation handle (38) at the upper end.
), a running wheel (40) is provided on the wheel cover (37), and the running wheel (40) is connected to a hydraulic motor (44) that can be driven by an electric motor in a drive unit case (35).
), and these running wheels (40)
A running portion (41) having a handle, an operating handle (38), etc. is formed. Note that by operating the forward/reverse switches (42) and (43) provided at the upper end of the operating handle (38), the hydraulic pump (44) is rotated in the forward and reverse directions to rotate the running wheels (40).
It is configured to move forward and backward. The traveling section (41) is configured in this way, and the trolley (1)
). In this way, since the running wheel (40) is attached to the direction control shaft (39) so that the direction can be changed freely, by changing the direction of the operation handle (38) integrated with the direction control shaft (39), the direction control shaft (39) and the direction control shaft (39) are integrated. front wheel (31
) (31) with the operating handle (38) facing the fixed direction and the front wheels (31) (31) facing the trolley (1).
can be moved forward and backward.

Further, as shown in FIGS. 4 and 7, the front of the drive unit case (35) is fixed by pin connection via two vertically flat parallel links (46) (46). It is connected to the mast (2). Furthermore, the running section (41) having the operating handle (38) is connected to the drive unit case (35) by the two mutually parallel stays (36) (36) as described above. Therefore, the running part (41) with the operating handle (38) is connected to the parallel link (46) together with the drive unit case (35).
Due to the presence of (46), the structure is such that it can move up and down a little with respect to the trolley (1), so the running wheels (40) can be independently suspended from the trolley (1).
The running wheels (40) are configured to be supported on the road surface by the weight of the drive unit case (35) and the like. Therefore, even if there is a step between the floor surface where the rear wheels (30) (30) of the truck (1) contact and the floor surface where the running wheels (40) contact,
The trolley (1) can be moved by running wheels (40) driven by a hydraulic pump (44).

Furthermore, a running section (41) including a drive unit case (35), running wheels (40), etc. is arranged on the rear side of the truck (1), and as shown in FIGS. The drive unit case (35) has trolleys (1) on its left and right sides.
Since it has a structure in which there are It is set up. In this way, the side weights (45) (45) are provided oppositely on both sides of the drive unit case (35). In this way, side weights (
45) By installing (45) oppositely, the lifting mast (
3) and the vertical boom (6) are at their highest positions as shown in Figure 1, they exert the effect of stabilizing the cart (1) laterally. In addition, the rear wheels (30) (30) and front wheels (3
1) In order to keep (31) in constant contact with the floor,
Fixed mast (2), elevating mast (3), and vertical boom (6)
The weight of the horizontal boom (8), etc. is sufficient, but when the load of the wall plate (53), etc. is applied to the hook (25),
By adding weight from the side weights (45) (45), the front and rear balance is maintained, and the rear wheels (30) of the trolley (1)
(30) etc. are constructed so that they are constantly in contact with the floor surface.

Furthermore, as shown in FIG. 4, an operation box (48) is attached via a conductive cable (47),
This operation box (48) includes lift operation switches (49) (50) for the hydraulic cylinder (16) and electric winch (18).
) are provided with lift/lower operation switches (51), (52), etc. Since the operation box (48) is provided in this way, the wall plate (53) can be installed as shown in FIG. 8, which is a perspective view of the main part, and in FIG. (53)
A concrete wall board (53), such as a lightweight aerated concrete board, is hung using a wall board hanging tie (54), such as a binding wire or a wide nylon belt, at a portion slightly above the center of the wall board (53). ), the wallboard hanging binding tool (54)
When attaching the wall plate (53) to the steel frame of a building such as a building by suspending it from the hook (25), etc., the load wire (24) must be fed out or rewinded, or raised or lowered. The mast (3) and the vertical boom (6) can be raised and lowered while observing the moving position of the wall plate (53).

[0021] When attaching the wall plate to the desired position on the frame using the device shown in the figure, the hoisting mast (3) and vertical boom (6) should be moved with the horizontal boom (8) extended forward. Loosen the winch (18), lower the hook (25), and as shown in Figures 8 and 1, hang the wallboard hanging tie from the part slightly above the center of the wallboard (53). (5
4) on the hook (25), wind up the load wire (24) with the winch (18), and, for example, lift the upper end of the wall plate (53) higher than the tip of the horizontal boom (8), and
) Lift the equipment so that the lower end does not touch the floor, raise the lifting mast (3) and vertical boom (6) slightly if necessary, and in this state move the equipment to the installation position where the wall plate (53) will be installed.
Thereafter, the lifting mast (3) and vertical boom (6) are raised, the upper end of the wall plate (53) is aligned with the upper position of the building frame, and the wall plate is attached to the building frame.

[0022]

Effects of the Invention In the first inventive device of the present invention, the vertical boom (6) is attached to the elevating mast (3) so as to be able to rise and fall freely, and the horizontal boom (8) is attached to the vertical boom (6). Since it is configured to be bent and folded, the vertical boom (6) and the lifting mast (3) are lowered, and the horizontal boom (8) is folded.
) to the vertical boom (6) and fold it, the entire device becomes compact.For example, the height of the device in this state can be reduced to less than 2 meters, and the length of the entire device can be reduced. It can be made about 140 cm. Note that the width of the entire device corresponding to this is about 90 cm. Therefore, when the device of the present invention is used inside a building and moved to an upper floor, it can be transported in an elevator. It also has the effect of not having to worry about height restrictions when moving the device. In addition, in the first inventive device of the present invention, even if it is configured compactly in this way, the vertical boom (
6) and lifting mast (3), it is possible to lift the wall board to the height of the beam. In addition, when the horizontal boom (6) is extended forward, the presence of the brace (10) has the effect that the horizontal boom (6) can be stably extended forward, and furthermore, the structure of the horizontal boom (6) is This has the effect of simplifying the process.

In the second invention device of the present invention, in addition to the effects exhibited by the first device, a hydraulic cylinder (16
), the lifting mast (3) is driven up and down, and the lifting mast (3) is driven up and down to raise and lower the vertical boom (6). This has the effect of making the device for raising and lowering the
The structure is such that the load chain (14) is wound up and unwound at the hook (2
5), it is possible to drive the lifting mast (3) and the vertical boom (6) up and down without changing the distance to the vertical boom (6). Therefore, the lifting mast (3) or vertical boom (6) can
This has the effect of allowing the wallboard to be lifted to a predetermined height.

[0024] In the third invention device of the present invention, the traveling part (4
1) is structured so that it can be moved slightly up and down with respect to the trolley (1) due to the presence of parallel links (46) (46) together with the drive unit case (35),
Since the structure is such that the weight of the drive unit case (35) is applied to the drive running wheels (40) of the running unit (41), the drive running wheels (40) of the running unit (41) are constantly in contact with the road surface. This makes it possible to stably drive and move the device of the present invention.

In addition to the effects exhibited by the third device described above, the fourth invention device of the present invention has vertically long flat side weights (45) installed on the left and right truck portions near the rear. As a result, even when the height of the crane section is raised to lift a wall board, the front-to-back balance of the entire device will not be disrupted, and at the same time, the left-right balance will not be disrupted either, making it possible to use the device with peace of mind. Demonstrate. Further, this side weight (45) also exhibits the effect that it can be used as a side bumper for the traveling section (41) and the drive section unit case (35).

[0026] In the fifth inventive device of the present invention, the trolley (1)
The front wheels (31) (31) can be fixed in the length direction of the truck (1) on the left and right sides of the truck (1), or can be fixed in the horizontal direction of the truck (1), and the running part ( The running wheels (40) of the truck (41) are structured so that the direction can be changed by changing the direction of the operating handle (38). It has the effect of making it possible to move the
The device can be stably moved forward and backward or left and right, making it ideal for moving the device into a narrow space at a wall installation site, or loading it into an elevator with a wide frontage but narrow depth. This has the effect of being able to move laterally, and also allowing several devices to be loaded side by side on a truck or the like.

[0027] In addition to the effects exhibited by the fifth device described above, the sixth invention device of the present invention exhibits the effects exhibited by the first device described above, and eliminates height restrictions and length restrictions. The device of the present invention can be moved to places with particularly narrow and low structures. It has the advantage of being able to be loaded in large numbers.

[Brief explanation of drawings]

FIG. 1 is an overall side view of an embodiment of the crane of the present invention.

FIG. 2 is a detailed side view of the carriage part of the device of FIG. 1;

FIG. 3 is a detailed side view of the upper part of the device of FIG. 1;

FIG. 4 is an overall plan view of the device in FIG. 1;

FIG. 5 is an overall rear view of the device in FIG. 1;

FIG. 6 is an explanatory diagram showing the tensioned state of the load wire of the apparatus in FIG. 1;

FIG. 7 is a side view illustrating a lower running section of the device in FIG. 1;

FIG. 8 is a perspective view of the main parts of the apparatus shown in FIG. 1, showing a state in which a wall plate is lifted;

[Explanation of symbols]

(1) Trolley (2) Fixed mast (3) Lifting mast (4) Boom mounting base (5) Support shaft (6) Vertical boom (7) Fulcrum shaft (8) Lateral boom (9) Support shaft (10) Braced body (11) Pin (12) Reception plate (13) Sprocket (14) Load chain (15) Horizontal beam (16) Hydraulic cylinder (17) Piston (18) Electric winch (19) Pulley (20) Pulley (21) Pulley (22) Pulley (23) Pulley (24) Load wire (25) Hook (26) Pin (27) Pin (28) Hook weight (29) Outrigger (29a) Wheels (30) Rear wheel (31) Front wheel (32) Vertical axis (33) Stopper pin (34) Hole (34') Pedestal part (35) Drive unit case (36) Stay (37) Wheel cover (38) Operation handle (39) Operation axis (40) Running wheel (41) Running part (42) Switch (43) Switch (44) Hydraulic pump (45) Side weight (46) Link (47) Conductive cable (48) Operation box (49) Operation switch (50) Operation switch (51) Operation switch (52) Operation switch (53) Wall board (54) Binding tool for hanging wallboard

Claims (6)

[Claims] Claim 1: A fixed mast (2) is erected and fixed on the trolley (1), and an elevating mast (3) is attached to the fixed mast (2).
A boom mount (4) is attached to the elevating mast (3) so as to be movable up and down, and a vertical boom (6) is erected substantially vertically on the boom mount (4). The horizontal boom (8) is attached to the upper end of the vertical boom (6) via the fulcrum shaft (7).
) has a structure in which the rear ends of the horizontal boom (8) are connected in a bendable manner so that the horizontal boom (8) can extend diagonally upward in front of the truck (1), and the horizontal boom (8) is connected to one end of a brace body (10) via a support shaft (9) provided in the middle part, and the other end of the brace body (10) is fixed to the middle part of the vertical boom (6) near the lower end. The brace body (10) can be attached and detached at the receiving plate (12), and the end of the brace body (10) is brought into contact with the receiving plate (12). A trolley-type crane characterized in that the horizontal boom (8) is bent and folded toward the vertical boom (6) when the horizontal boom (8) is detached. 2. A middle part of a load chain (14) is stretched around a sprocket (13) provided at the upper end of a lifting mast (3), and both ends of the load chain (14) are connected to the upper end of a fixed mast (2). The horizontal beam (15) integrally fixed to the fixed mast (2) at a closer position and the boom mounting base (
4), and a hydraulic cylinder (16) is erected on the trolley (1), and the hydraulic cylinder (16)
The tip of the piston (17) is connected and fixed to the upper end of the lifting mast (3), and the lifting mast (3) is driven up and down by the control of the hydraulic cylinder (16), and the lifting mast (3) is also raised and lowered. Driven by load chain (1
4), and the load wire (24) suspended from the tip of the horizontal boom (8) is connected to the pulley at the tip of the horizontal boom (8). (23), then the pulley (22) at the base end of the horizontal boom (8), the pulley (21) on the boom mount (4), and the pulley (20) at the top of the lifting mast (3).
19) at the upper end of the fixed mast (2).
2. The trolley type crane according to claim 1, wherein the crane is wound around a winch (18) fixedly attached to the crane. 3. Rear wheels (30) (30) are arranged on the rear left and right, front wheels (31) (31) are arranged on the front left and right, and the whole is configured in a planar H shape. It has a truck (1) structure having a fixed mast (2), and a drive unit case (3) behind the fixed mast (2).
5) and a running section (41), the running section (41) is provided with a drivable running wheel (40), and the drive unit case (35) and the running section (41) are integrally connected. The driving unit case (35) is connected to the fixed mast (2) at the front by means of a pin connection via two vertically flat parallel links (46) (46), and the running part (
41) has a structure in which the drive unit case (35) and the parallel links (46) (46) allow the crane to move slightly up and down relative to the trolley (1). . [Claim 4] Drive unit case (3
4. The trolley type crane according to claim 3, wherein vertically long flat side weights (45) are installed on the left and right parts of the trolley at positions parallel to the crane. [Claim 5] Rear wheels (30) (30) are arranged on the rear left and right, front wheels (31) (31) are arranged on the front left and right, and the whole is configured in a planar H shape, and the center part of the H shape is a crane. It has a truck (1) structure having a fixed mast (2), and a drive unit case (35) behind the fixed mast (2).
and a running part (41), the running part (41) is provided with a drivable running wheel (40), and the drive running wheel (40) of the running part (41) has an operating handle (38) at the upper end. The structure is such that the running wheels (40) can change direction by changing the direction of the operating handle (38), and the truck (1 ) is characterized by a structure that allows the front wheels (31) (31) to be fixed in the longitudinal direction of the truck (1) on the left and right sides of the truck (31), or to be fixed in the horizontal direction of the truck (1). A trolley type crane. 6. A fixed mast (2) is erected and fixed on the trolley (1), and an elevating mast (3) is attached to the fixed mast (2).
A boom mount (4) is attached to the elevating mast (3) so as to be movable up and down, and a vertical boom (6) is erected substantially vertically on the boom mount (4). The horizontal boom (8) is attached to the upper end of the vertical boom (6) via the fulcrum shaft (7).
) has a structure in which the rear ends of the horizontal boom (8) are connected in a bendable manner so that the horizontal boom (8) can extend diagonally upward in front of the truck (1), and the horizontal boom (8) is connected to one end of a brace body (10) via a support shaft (9) provided in the middle part, and the other end of the brace body (10) is fixed to the middle part of the vertical boom (6) near the lower end. The brace body (10) can be attached and detached at the receiving plate (12), and the receiving plate (12) holds the end of the brace body (10) in contact with the brace plate (12). By detaching the horizontal boom (8), the vertical boom (
6. The trolley crane according to claim 5, wherein the crane is configured to be folded in the direction of 6).