Block for outrigger provided on vehicle

Abstract

To provide a block which enables reduction of labor for installation.SOLUTION: An outrigger (3) includes: a beam part (11) extending to a side of a vehicle (5); a cylinder part (13) which is provided at the beam part (11) and driven in a vertical direction; and a jack base (14) provided at a lower end of the cylinder part (13) and including a predetermined ground contact surface. A block (1) according to the invention is detachably attached to the jack base (14).SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to blocks used in outriggers of construction vehicles such as concrete pump trucks and crane trucks, and work vehicles such as aerial work platforms. [Background technology]

[0002] Construction vehicles such as concrete pump trucks use outriggers to stabilize the vehicle and prevent it from tipping over during work. The outriggers include a beam that projects out to the side of the vehicle, a cylinder that is attached to the beam and is driven vertically, and a jack base that is attached to the lower end of the cylinder and has a predetermined contact surface.

[0003] When using outriggers, a block such as those described in Patent Documents 1 and 2 is used. Specifically, the process is as follows: The vehicle is stopped at the work site, and the beam is extended horizontally or rotated to move the jack base to the desired position. Next, the block is placed on the ground so that it matches the position of the jack base. The cylinder is driven to lower the jack base vertically. This causes the jack base to rest on the block. In other words, the contact surface of the jack base rests on the block. The cylinder is then driven a predetermined length to support the vehicle with the jack base. This stabilizes the vehicle. Because the block has a larger area than the contact surface of the jack base, it is possible to stabilize the vehicle without it sinking into the ground. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 2-124758 [Patent Document 2] Japanese Patent Application Publication No. 10-114259 Summary of the Invention [Problem to be solved by the invention]

[0005] Conventional blocks can stabilize vehicles without sinking into the ground, but they also have some issues. Specifically, placing the blocks on the ground requires a lot of work. As explained above, the blocks must be placed on the ground so that they align with the position of the jack base, but they are heavy and require a lot of work. Furthermore, when placing the blocks on the ground, there are cases where the placement location is not suitable, and in such cases, the beam must be moved to change the placement location. This requires a lot of work, as the blocks must be moved once they have been placed on the ground, which requires a lot of work. Furthermore, even if the blocks are placed on the ground so that they align with the position of the jack base, when the cylinder is actuated to lower the jack base, the jack base may not be centered on the blocks. In such cases, it is necessary to first actuate the cylinder to raise the jack base and then adjust the placement position of the blocks.

[0006] An object of the present invention is to provide a block that can reduce the labor required for installation. [Means for solving the problem]

[0007] The present invention relates to a block used in a vehicle outrigger. The outrigger includes a beam that projects out to the side of the vehicle, a cylinder that is attached to the beam and driven vertically, and a jack base that is attached to the lower end of the cylinder and has a predetermined contact surface. The block according to the present invention is configured to be detachably attached to the jack base.

[0008] The invention described in claim 2 is configured as follows: The block has a hole cut out from the side of the block parallel to the bottom surface of the block, and the hole opens to the top surface of the block to form a slit. [Effects of the Invention]

[0009] According to the present invention, the block can be detachably attached to the jack base. That is, the block can be attached to the jack base. In this way, when the outrigger beam is extended or rotated, the block moves together with the jack base while attached to the jack base. Then, when the cylinder is driven to lower the jack base, the block is automatically placed on the ground. This reduces the labor required to place the block.

[0010] In the invention described in claim 2, the block can be attached to the jack base simply by matching the cylinder part to the slit and the jack base to the cutout, and then sliding the block. This makes attachment easy and reduces the labor required. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a perspective view showing a concrete pump truck supported on the ground by blocks according to an embodiment of the present invention. FIG. [Figure 2] FIG. 1 is a perspective view of a block according to an embodiment of the present invention. [Figure 3] 1A and 1B are diagrams explaining how to use the block according to this embodiment, in which (A) and (B) are front views showing a part of the outrigger and the block, and (C) and (D) are side views. [Figure 4] FIG. 10 is a perspective view of a block according to a modified example of the present embodiment. [Figure 5] FIG. 10 is a perspective view of a block according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] [Present embodiment] This embodiment will be described below. As shown in Fig. 1, blocks 1, 1, ... according to this embodiment are provided on outriggers 3, 3, ... of a concrete pump truck 2. The blocks 1, 1, ... according to this embodiment will be described in detail later, but they are provided on the outriggers 3, 3, ... of a concrete pump truck 2, a construction vehicle such as a crane truck, or a work vehicle such as an aerial work vehicle. Here, a concrete pump truck 2 will be briefly described as an example of a vehicle equipped with outriggers 3, 3, ...

[0013] <Concrete pump truck> The concrete pump truck 2 is composed of a self-propelled vehicle 5, a hopper 6 attached to the vehicle 5, a multi-stage boom 8, concrete pressure pipes 10 attached to the vehicle 5 and the multi-stage boom 8, and a concrete pump (not shown). Concrete is supplied to the hopper 6 and the concrete pump is driven. The concrete is then pumped through the concrete pressure pipe 10. By driving the multi-stage boom 8, the tip of the concrete pressure pipe can be moved to the desired position, and concrete can be poured.

[0014] <Outrigger> Such a concrete pump truck 2 is supported by outriggers 3, 3, ... to prevent it from tipping over during concrete pouring work. The outriggers 3, 3, ... are equipped with beams 11, 11 that are adapted to project out to the sides of the vehicle 5, and cylinders 13, 13, ... that are provided on the beams 11, 11, ... and are adapted to be driven in the vertical direction. The beams 11, 11, ... can be extended laterally and rotated, so that the cylinders 13, 13, ... can be moved to desired positions.

[0015] These cylinder portions 13, 13, ... are provided with jack bases 14, 14, ... at their lower ends. Although only a portion of the jack bases 14, 14, ... is shown in FIG. 1 , they have a contact surface of a predetermined area and are allowed to sway slightly relative to the cylinder portions 13, 13, .... Therefore, when the cylinder portions 13, 13, ... are driven to place the jack bases 14, 14, ... on the ground, they sway in accordance with the slope of the ground, so that the jack bases 14, 14, ... come into close contact with the ground. However, since the blocks 1, 1, ... according to this embodiment, which will be described next, are attached to the jack bases 14, 14, ..., they come into contact with the ground via the blocks 1, 1, ....

[0016] <Banki> A block 1 according to this embodiment is shown in Figure 2. In this embodiment, the block 1 has a rectangular parallelepiped shape with a square top surface and a predetermined height. The block 1 may be made of any material, such as plywood or resin, but is made of a material that is not easily damaged or deformed even when subjected to the weight of a vehicle 5 such as a concrete pump truck 2. A cutout 18 is formed in the block 1 from its side 16, parallel to the bottom surface 17 of the block 1. The cutout 18 extends from the side 16 to near the center of the block 1. In other words, when viewed from the side 16, it appears as a blind hole. This cutout 18 opens at the top surface 19 of the block 1, forming a slit 20.

[0017] The cutout 18 is wide and has a large capacity, and is designed to accommodate the jack base 14 (see Figure 1), as will be explained next. The bottom surface of the cutout 18, i.e., the cutout bottom surface 22, is flat, so that the jack base 14 can come into contact with it and apply weight. The slit 20 is narrower than the cutout 18, and is designed to accommodate the cylinder portion 13 of the outrigger 3 (see Figure 1) or the tapered upper portion of the jack base 14, as will be explained next.

[0018] <How to use the blocks> The method of using the block 1 according to this embodiment will now be described. As shown in (A) of FIG. 3, the block 1 is brought near the outrigger 3. Then, the block 1 is moved parallel to the jack base 14 so that it fits into the cutout 18. As a result, as shown in (B) of FIG. 3, the jack base 14 is stored in the cutout 18. At this time, the thin upper part of the jack base 14, or the cylinder part 13, is positioned in the slit 20. In other words, the block 1 according to this embodiment is attached to the jack base 14 of the outrigger 3.

[0019] As shown in FIG. 3(C), even if the outrigger 3 with the block 1 of this embodiment attached to the jack base 14 is driven horizontally or vertically, the block 1 will not come off. This is because the slit 20 is narrow and the jack base 14 will not come out of the slit 20. The outrigger 3 is driven to move the jack base 14 to the desired position. Next, as shown in FIG. 3(D), the cylinder portion 13 is driven to lower the jack base 14. The bottom surface 17 of the block 1 of this embodiment comes into contact with the ground, and the underside of the jack base 14 comes into contact with the hollowed-out bottom surface 22 of the block 1.

[0020] If there is a problem with the condition of the ground on which the block 1 is placed, the cylinder 13 is driven to raise the jack base 14, and the beam 11 (see Figure 1) is driven to change its position. Since the block 1 in this embodiment moves together with the jack base 14, this type of operation can be easily performed. Once the block 1 has contacted the ground at the desired position, the cylinder 13 is subsequently driven by a predetermined stroke. The vehicle 5 (see Figure 1) is supported and stabilized by the outriggers 3.

[0021] [Modification of this embodiment] This embodiment can be modified in many ways. Figure 4 shows a block 1A according to a modification of this embodiment. The block 1A according to this modification has a disk-shaped top surface 19. A cutout 18A is formed parallel to the bottom surface 17 from the side 16 through the block 1A. Therefore, the slit 20A also completely bisects the top surface 19 of the block 1A. This modified block 1A can also be easily attached to the jack base 14 of the outrigger 3 (see Figure 1).

[0022] [Second embodiment] Figure 5 shows a block 1B according to the second embodiment. The block 1B according to the second embodiment has a fixing bracket 30 with a predetermined structure attached to its top surface 19. The fixing bracket 30 is composed of a main body 31 and a cover 34 connected to the main body 31 by a hinge 33. The main body 31 is hollow with a predetermined volume and has a semicircular opening 36 at the top. The cover 34 is also hollow with a predetermined volume and has a semicircular opening 37 at the top. The main body 31 is equipped with a hook 39, and the cover 34 is equipped with a fastener 40.

[0023] Although not shown in the drawings, as will be readily understood by those skilled in the art, the block 1B according to the second embodiment can also be attached to the jack base 14 of the outrigger 3 (see FIG. 1). That is, the block 1B according to the second embodiment is held, the jack base 14 is inserted into the hollow of the main body 31, and the cover 34 is closed. Then, the fastener 40 is fixed to the hook 39. This allows the block 1B to be fixed to the jack base 14. At this time, the cylinder portion 13 of the outrigger 3 passes through the fixing bracket 30 through the openings 36 and 37. As can be understood from this explanation, the fixing bracket 30 serves as a fixing means for fixing the jack base 14. [Explanation of symbols]

[0024] 1 Block 2 Concrete pump truck 3 outriggers 6 hoppers 8 Multi-stage boom 10 Concrete pumping pipe 11 beam portion 13 cylinder portion 14 Jack base 16 Side 17 Bottom 18 Hollow 19 Top 20 Slit 22 Hollowed-out bottom 30 Fixing hardware 31 main body 33 hinge 34 Cover part 36 Opening 37 Opening 39 Hook 40 Fasteners

Claims

1. In an outrigger having a beam portion that extends out to the side of a vehicle, a cylinder portion that is attached to the beam portion and is driven vertically, and a jack base that is attached to the lower end of the cylinder portion and has a specified contact surface, the block can be attached and detached to the jack base.

2. 2. The block according to claim 1, wherein the block has a hole cut out from a side of the block parallel to the bottom surface of the block, the hole opening at the top surface of the block to form a slit.

3. 3. The block according to claim 2, wherein the recess is formed from a side portion of the block to a vicinity of a center portion of the block.

4. 2. The block according to claim 1, further comprising a fixing means for fixing the jack base.

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