Suspension plate for joint plate

Abstract

To provide a suspension plate for a joint plate, which can be easily attached to the joint plate and can suspend the joint plate.SOLUTION: A suspension plate 1 for a joint plate comprises: a pair of suspension tool bodies 3 that can support both ends of the joint plate; and a long connection member 4 connected to the pair of suspension tool bodies. The suspension tool bodies include a pair of locking parts 5 that can be attached to the bottoms or the sides of both the ends of the joint plate in an engaged state, a pair of connection parts 6 which are provided in the upper parts of the locking parts and to which the connection member is attached, and a pair of engaged parts 7 which are provided in the upper parts of the connection parts and to which a suspension device is connected. The locking parts are formed by bent plate-like members.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a joint plate lifting tool for lifting a joint plate that closes a joint between structural members provided with a joint portion interposed therebetween. [Background technology]

[0002] BACKGROUND ART Patent Document 1 discloses an example of a joint plate lifting tool for lifting a joint plate that closes a joint between floor surfaces. That is, "an elongated engaged portion having side walls opposed to each other at a predetermined interval and upper walls extending inward from the upper edges of both side walls, with an upper opening formed between the upper walls, is detachably attached to one or more disposed suspended bodies, the elongated engaged portion comprising: a connecting portion to which a lifting member is detachably connected; and a female screw portion disposed on the connecting portion and having a screw hole opening downward; an engaging member comprising: a male screw rod threaded into the screw hole of the female screw portion and capable of passing through the upper opening; and a lower support plate disposed at the lower end of the male screw rod and rotated about the male screw rod as a rotation axis between an insertion position where the upper opening can be inserted and an engaging position where the upper opening cannot be inserted and engaging ends formed on both side edges are engaged with both side wall portions of the engaged portion; A "lifting hardware" is known, which is characterized in that it is provided with an insertion hole for inserting the male threaded rod of the engaging member, and is provided with a flat mounting support plate interposed between the operating member and the engaging member and placed on the upper wall portion of the locked portion, and when the lower support plate of the engaging member inserted into the upper opening of the locked portion from above is in the locked position and the mounting support plate is placed on the upper wall portion, by rotating the operating member, the upper wall portion is clamped between the lower support plate and the mounting support plate through the tightening action between the female threaded portion and the male threaded rod, and the hardware is engaged with the lifted body (Patent Document 1).

[0003] However, with such lifting hardware, the engaging portion, which is roughly in the shape of a lip channel steel, must be fixed to a joint plate or the like, and it is not easy to attach it to the joint plate. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2018-3981 Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks of the prior art, the present invention aims to provide a joint plate lifting tool that can be easily attached to a joint plate and can lift the joint plate.

[0006] The above and other objects and novel features of the present invention will become more fully apparent from the following description read in conjunction with the accompanying drawings.

[0007] However, the drawings are for illustrative purposes only and do not limit the technical scope of the present invention. [Means for solving the problem]

[0008] In order to achieve the above object, the lifting tool for joint plates of the present invention is a lifting tool for joint plates comprising a pair of lifting tool bodies capable of supporting both ends of the joint plate, and a long connecting member connected to the pair of lifting tool bodies, wherein the lifting tool body is composed of a locking portion that can be attached in an engaging state to the bottom or side of both ends of the joint plate, a connecting portion provided above the locking portion and to which the connecting member is attached, and an engaged portion provided above the connecting portion and to which a lifting device is connected, and the locking portion is formed of a bent plate-shaped member, The plate thickness of the locking portion is 2 mm or less, and the connecting member is formed to a length approximately equal to the width of the joint plate, with both ends attached to the connecting portion of the lifting tool body by welding or bolts and nuts. It is characterized by: The joint plate lifting tool according to claim 2 is characterized in that the locking portion is bent at an acute angle. The connecting member of the joint plate lifting device described in claim 3 is a rail-like member that is approximately U-shaped in cross section facing upward and is formed to a length approximately the same as the width of the joint plate, and both ends of the rail-like member are each fixed to the connecting portion of the lifting device body. [Effects of the Invention]

[0009] As is clear from the above description, the present invention provides the following effects. (1) In the inventions described in claims 1 and 2 of the present invention, the joint plate is provided with a locking portion that can be attached in a locked state to the bottom or side of both ends of the joint plate, so that it can be locked and lifted without performing processing such as forming an engaging portion on the joint plate. (2) In the invention described in claim 3, the same effect as in (1) can be obtained, and the connecting member can be formed to be lightweight and strong. [Brief explanation of the drawings]

[0010] 1 to 7 are explanatory diagrams showing a first embodiment of the present invention. [Figure 1] FIG. 2 is a plan view of the joint plate lifting tool according to the first embodiment. [Figure 2] FIG. 2 is a front view of the joint plate lifting tool according to the first embodiment. [Figure 3] Cross-sectional view taken along line 3-3 in Figure 1. [Figure 4] Cross-sectional view taken along line 4-4 in Figure 1. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] An explanatory diagram of the joint plate in the lifted position. DETAILED DESCRIPTION OF THE INVENTION

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings showing preferred embodiments of the present invention.

[0012] In a first embodiment of the present invention shown in FIGS. 1 to 7, reference numeral 1 denotes a joint plate lifting tool capable of lifting up a joint plate 2 used in a floor joint device.

[0013] As shown in Figures 1 to 4, this joint plate lifting device 1 is composed of a pair of lifting device main bodies 3 that can support both ends of the joint plate 2, and a long or rope-like connecting member 4 that is connected to the pair of lifting device main bodies 3.

[0014] The lifting device main body 3 is composed of a pair of locking portions 5 that can be attached in an engaged state to the bottom or side portions of both ends of the joint plate 2, a pair of connecting portions 6 that are provided on top of the locking portions 5 and to which the connecting members 4 are attached, and a pair of engaged portions 7 that are provided on top of the connecting portions 6 and to which a lifting device such as a crane is connected.

[0015] The locking portion 5 is a member formed by bending a plate-like member such as a metal plate at an angle of 90 degrees or an acute angle, and is preferably thick enough to pass through the small gaps between the multiple joint plates 2. Since the joint plates 2 are usually arranged with gaps of about 2 mm, the thickness of the locking portion 5 should be 2 mm or less.

[0016] In this embodiment, the locking portion 5 is bent at an acute angle and has a shape that allows it to be locked onto the side of the joint plate 2 in which a substantially N-shaped or substantially inverted N-shaped recess is formed.

[0017] When engaging with a normal joint plate 2 that does not have a recess, the engaging portion 5 is bent at approximately 90 degrees and is engaged with the bottom of the joint plate 2.

[0018] The connecting portion 6 is provided above the locking portion 5, and in this embodiment, the locking portion 5, connecting portion 6, and engaged portion 7 are formed from a single metal plate. The connecting portion 6 is formed with a bolt-through hole 8 for attaching the connecting member 4.

[0019] In this embodiment, the locking portion 5, connecting portion 6 and engaged portion 7 are formed from a single metal plate, but for example, a separate connecting portion 6 may be fixed by welding or the like to the top of the plate-shaped locking portion 5 having a bent portion, and the engaged portion 7 formed as a separate piece may be provided on top of that.

[0020] The engaged portion 7 is a portion to which a lifting device such as a crane is connected, and in this embodiment, an engaging hole 9 is formed to engage with a sling such as a crane hook or a sling. If the engaged portion 7 is formed separately from the connecting portion 6, etc., an eyebolt-like member may be attached to serve as the engaged portion 7.

[0021] In this embodiment, the connecting member 4 is a rail-like member made of metal and having a generally upward U-shape in cross section, and both ends thereof are attached to the connecting portion 6. The length of this connecting member 4 is formed to be approximately the same as the length of the width (short side) of the joint plate 2.

[0022] At both longitudinal ends of the connecting member 4, there are provided connection surfaces 4a for connection to the connecting portion 6, and the connecting member 4 is generally formed in the shape of a box with an open top. Bolt holes 8 are formed in the connection surfaces 4a, and the connecting member 4 and the connecting portion 6 are attached by tightening them with bolts and nuts.

[0023] In this embodiment, the connecting member 4 is attached with bolts and nuts, but the connecting member 4 may also be attached to the lifting tool body 3 by welding or the like.

[0024] When using the joint plate lifting device 1 of the present invention, two sets of joint plate lifting devices 1 are attached near both longitudinal ends of the joint plate 2, and the joint plate 2 is lifted upward using a crane or the like engaged with the engagement hole 10. [Industrial Applicability]

[0025] The present invention finds application in the industry of manufacturing lifting tools for joint plates. [Explanation of symbols]

[0026] 1: Lifting tool for joint plate, 2: Joint plate, 3: Lifting tool body, 4: Connecting member, 5: locking portion; 6: connecting portion; 7: engaged portion; 8: bolt through hole; 9: Engagement hole.

Claims

1. A joint plate lifting tool comprising a pair of lifting tool bodies capable of supporting both ends of the joint plate and a long connecting member connected to the pair of lifting tool bodies, The lifting device body is composed of a pair of locking portions that can be attached in an engaged state to the bottom or side portions of both ends of the joint plate, a pair of connecting portions provided on top of the locking portions and to which the connecting members are attached, and a pair of engaged portions provided on top of the connecting portions and to which a lifting device is connected, and the locking portions are formed from bent plate-shaped members.

2. 2. The joint plate lifting tool according to claim 1, wherein the engaging portion is bent at an acute angle.

3. The joint plate lifting tool described in either claim 1 or claim 2 is characterized in that the connecting member is a rail-shaped member that is approximately C-shaped in cross section facing upward and is formed to a length approximately the same as the width of the joint plate, and both ends of the member are each fixed to the connection portion of the lifting tool body.

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