JP4238332B2 - Construction lift - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a construction lift suitable for transporting construction materials and the like.
[0002]
[Prior art]
Conventionally, in a construction lift used to transport materials to high places at construction sites, a lifting support (guide rail) that is supported and erected on the outside of the structure using a scaffolding framework The carrier (loading platform) can be suspended up and down by a hoisting rope driven by a hoisting machine installed on the ground or on the intermediate floor of the structure around a pulley provided on the top of the elevating support. There exists a thing of a structure (for example, refer patent document 1).
[0003]
Further, guide rails are arranged on both the left and right sides as the lifting support body, and both guide rails are connected by a horizontal member, and a rack is attached using the front surface of the horizontal member and meshes with the rack. The thing of the structure provided with the carrying device which drives up and down by a drive machine is known (refer patent document 2).
[0004]
[Patent Document 1]
Japanese Patent Publication No. 63-41839 (FIGS. 1 and 2)
[Patent Document 2]
Japanese Utility Model Publication 2-35741
[Problems to be solved by the invention]
In the construction lift as known from Patent Document 1 or Patent Document 2 described above, a loading platform on which materials and the like are mounted is provided on the front side of the carrier frame, and a handrail or guard is provided on the front surface and both the left and right sides. Is attached detachably or tiltably. In general, however, the size of the loading platform floor is relatively small, and the handrails or guards provided around it protect the load from falling from the loading platform to the outside. In some cases, it is impossible to make the structure such as a handrail strong because the cargo bed may be extended and used.
[0006]
For this reason, when a movable baggage is mounted, if the baggage moves and displaces during ascending / descending, there is a possibility that the load acting on the carrier is fluctuated and hindering the raising / lowering of the carrier. For example, when a material is loaded on a small transport vehicle such as a unicycle (cat car) and transported by a lift, the small transport vehicle is directly carried on the lift platform, and is carried up. Since it does not have a fixing means, it will not be fixed and will only be placed, and it will become unstable if it is not mounted so as to be properly within the guarded range of the loading platform. Further, if the handle portion protrudes to the outside of the loading platform, there is a risk that the handle portion may come into contact with structures around the lift installation place during lifting.
[0007]
The present invention has been made in view of the situation as described above, and is a construction lift that can mount a small transport vehicle such as a unicycle (cat car) and can efficiently lift materials and the like in a stable state. It is something to be offered.
[0008]
[Means for solving the problems and actions / effects]
In order to achieve the aforementioned object, a construction lift according to the present invention comprises:
In a construction lift provided with a carrier that is guided by a guide rail of an elevating support that is supported and erected on a side part of a structure or the like and that is provided with a loading platform on a front part thereof, so that it can be raised and lowered.
A small transport vehicle is mounted on the loading platform, and is detachably inserted between the frame and the wheel at the end of the frame of the small transport vehicle mounted on the guard portion on the opposite side of the loading platform. A fixing means for fixing the small transport vehicle, the guard on the loading / unloading side of the loading platform is held on both sides so as to be slidable up and down, and is provided so that it can be tilted up by raising a predetermined amount. It is the structure which also serves as a tread board .
[0009]
According to the present invention, when a small transport vehicle is placed on the platform of the transporter and the material is lifted, when the small transport vehicle is mounted on the load platform, the tip portion of the wheel support portion in the frame of the small transport vehicle and between the wheel, Ri by the fact to include a fixing means for the movement of the frame can be fixed by inserting engaging a fixing member connected to the bed of the guard, the lifting operation of the carriage without requiring a complicated mechanism small transport vehicles embarked like material is fixed on the bed, it is possible to raise and lower the carriage in a stable state during. Therefore, a lift of a type that includes a drive unit in a transporter and moves up and down has an advantage that a stable operation can be performed without fluctuations in load. Of course, the same effect can be obtained in a rope-driven lift. Moreover, since it can be used as a footboard when the guard provided on the loading platform is lifted and laid down, it has the advantage that it is easy to get on and off the small transport vehicle on the loading platform.
[0010]
The fixing means of the small transportation vehicle in the invention comprises a mounting member which is attached to the guard provided around the bed, engaged to be inserted between the leading end portion of the wheel and the vehicle body frame of the small transportation vehicle It is preferable to be configured by a wedge-shaped fixing member and a connecting member that connects the fixing member and the mounting member . In this way, after the small transporter vehicle is placed on the loading platform, when the fixing member connected to the mounting member attached to the guard is inserted between the front end of the body frame of the small transporter vehicle and the wheel, the vehicle body frame and the wheel are Since it is in the locked state, the small transport vehicle can be fixed on the loading platform and maintained in a stable state without fluctuation during the lifting operation, and the transporter can be lifted and lowered.
[0011]
The small transport vehicles to be mounted in front yn block, joined by downward pivotally fitting in the hinge pin in the rear end portion of the body frame both left and right handle protruding to both sides rear from the vehicle body frame, It said front portion from the hinge pin position of the fitting and to travelable attitude lift both handles may be from a fixed configurations that to allow support engage the upper surface portion of the body frame. If it carries out like this, after putting this small transport vehicle on the loading platform of a carrier, the full length can be shortened by lowering a handle part downward, and it can become bulky and can be stored easily in a small space. Therefore, with this handle folding and the fixing function by the fixing means, even a lift installed in a scooping space can stabilize the small transport vehicle on the loading platform and use the small transport vehicle reasonably and effectively. You can move materials up and down. In addition, since the small transport vehicle can be brought into a state in which it can be moved and operated with the connecting bracket automatically by lifting the handle while being lowered from the carrier, it can be transported to the target position without any trouble during the small transport work. it can.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, a specific example of the construction lift according to the present invention will be described with reference to the drawings.
[0013]
1 is a front view showing a main part of the construction lift according to the present embodiment, FIG. 2 is a side view of FIG. 1, and FIG. 3 is a plan view (a) of a carrier carrier and an enlarged plan view of a guard mounting portion. FIG. 4 (b) and an enlarged side view of the guard mounting portion are shown in FIG. 4, a side view (a) of the small transport vehicle and a perspective view (b) showing details of the handle mounting portion, and FIG. The plan views are respectively shown.
[0014]
The construction lift 1 according to this embodiment includes a lifting support 2 with a rack gear 3 attached to a front surface supported by a structure and two vertical members constituting the lifting support 2 as guide rails. 2a, 2a, and a carrier 10 provided with a drive unit that is guided by this and meshes with the rack gear 3.
[0015]
The transporter 10 is lifted and lowered by engaging with a lifting frame 11 guided and supported by the guide rails 2a, 2a of the lifting support 2, and a rack gear 3 supported by the lifting frame 11 and provided with the lifting support 11. It is formed by a gear (not shown) having a rolling meshing function and its driving machine 13 and a loading platform 15 supported by an L-shaped frame 11a on the front side of the elevating frame 11.
[0016]
The loading platform 15 is provided with guards 16 and 16 ′ on four sides including the lifting frame 11 side so as to prevent the loaded cargo from falling, and the guard 16 ′ at a position facing the lifting frame 11 is fixed. The two guards 16 are attached to be tiltable. In addition, the guard 16 that is capable of raising and lowering the loading platform 15 is provided with a perforated plate 16c (expanded metal or the like) on the inside so that it becomes a stepping plate when lying down.
[0017]
As shown in FIGS. 3A to 3C, the guard 16 has cross-sections at the four corners of the loading platform 15 with the end portions 16 a ′ and 16 b ′ of the horizontal members 16 a and 16 b arranged in parallel in the vertical direction. It is inserted and supported in the groove portion 17a of the support columns 17 and 17 which are arranged upright so that the opening groove portion 17a faces each other, and both end portions 16a ′ and 16b ′ are grooves of the support column 17 in the standing state. The guard 16 is lifted as it is, and the end 16a ′ of the upper lateral member 16a is disengaged from the groove 17a of the column 17 (shown by a two-dot chain line in FIG. 3C). When it is tilted outward, the end 16b ′ of the lower lateral member 16b becomes a turning fulcrum within the groove 17a of the support column 17 so that it can fall down. In addition, the member used as a step board is attached | subjected to the upper surface (inner surface) at the time of the fall of the guard 16 made this raising / lowering possible. Further, retaining pins 18 are attached to the lower portions of the columns 17 so as to prevent the end portions 16b ′ of the lower lateral members 16b of the guards 16 from coming out when the guards are pulled up.
[0018]
Further, a clasp attachment 21 as a fixing means 20 for a small transport vehicle, which will be described later, is attached to the upper lateral member 16a so as to prevent troubles when lying down. The clasp attachment 21 is described as being attached to one of the guards 16 for the sake of explanation. However, if it is provided on both sides, it can be fixed in the same way even when a small transport vehicle is entered from either the left or right. Means 20 can be used.
[0019]
On the other hand, a unicycle as shown in FIG. 4 is used as the small transport vehicle 30 suitable for carrying materials on the loading platform 15 of the transporter 10. In this small transport vehicle 30, a body frame 31 has a front end bent to a square having a required width using, for example, a pipe material, and a front end is inclined upward from an intermediate portion, and a rear end portion is made parallel to the intermediate portion. A main frame 32 that is bent slightly diagonally upward and the middle portion is integrally joined by a plurality of lateral connecting members, and a pair of left and right sides formed in a downward angle on both sides of the rear half of the main frame 32 and having a lower end in an arc. The leg 33 and the support portion 34 of the wheel bent in a U shape in a horizontal state on the front lower center line are welded and formed integrally.
[0020]
The wheel support portion 34 of the vehicle body frame 31 is provided with a wheel 35 of rubber tire with its support shafts 36 fixed at both ends. On the upper side of the vehicle body frame 31, a load receiving pan 37 having a gentle slope on the front side where materials can be received and supported and a steep slope on the left and right and the rear side than the front side is attached.
[0021]
The handle 38 provided at the rear portion of the vehicle thus configured has a base end portion 38a attached to the rear end portion of the main frame 32 of the vehicle body frame 31 so as to be pivotable downward by a hinge pin 39, and the handle base end portion 38a. A connecting fitting 40 bent in an inverted U-shaped cross section is attached so as to protrude forward from a substantially upper position of the hinge pin 39. Further, the handle 38 is provided with a grip 38b with its end bent slightly downward, and when in use, the front half of the connection fitting 40 is in contact with the rear end 32a of the main frame 32 from above. It is formed so that the function at the time of transportation can be demonstrated. The small transport vehicle 30 is housed in a range surrounded by the guards 16 and 16 'on the loading platform 15 of the transporter 10 by rotating the handle 38 downward (FIG. 3 ( a)).
[0022]
As the fixing means 20 of the small transport vehicle 30, a mounting bracket 21 is attached to an appropriate position of the upper lateral member 16 a of the guard 16 in the loading platform 15, and a flexible connecting member 22 (for example, a small chain) is attached to the mounting bracket 21. ) Is attached, and a locking piece 23 is attached to the other end of the connecting member 22. The lock piece 23 is a member having an appropriate length with a sloped side portion, and is formed between the wheel 35 of the small transport vehicle 30 and the inside of the tip of the wheel support portion 34 of the vehicle body frame 31 bent into a U shape. It is formed so that the rotation of the wheel 35 is prevented and the movement is fixed by being detachably inserted from above into the space formed therebetween. The lock piece 23 is preferably formed in a planar shape in which one side is an arcuate surface and the opposite surface contacts the tire 35 ′ of the wheel 35 to prevent rotation. A lock 24 for attachment / detachment is attached to the upper portion of the lock piece 23.
[0023]
The construction lift according to the present embodiment configured as described above has the lifting support 2 standing on a structure constructed at a construction site or the like directly or on a side surface of the framework work scaffold via a support member (support metal fitting). Then, the carrier 10 is mounted on the front surface of the lifting support 2, and the gear is engaged with the rack 3 by the drive of the driving machine 13 so that it can be lifted and lowered.
[0024]
The loading platform 15 in the transporter 10 can carry materials and the like directly mounted on the upper surface, but can carry the materials and the like in bulk with the small materials loaded on the small transport vehicle 30. ing. When the small transport vehicle 30 is placed on the loading platform 15 of the transporter 10, the structure of the handle 38 protrudes from the transporter (loading platform 15) due to its structure, and comes into contact with a working landing or the like provided in the surroundings when moving up and down. There is a risk. Further, if the vehicle is placed on the loading platform 15 as it is, the position may be shifted due to an external force such as vibration or an imbalance of materials placed on the load receiving pan 37 during raising and lowering.
[0025]
The construction lift of the present embodiment solves the problems associated with mounting the small transport vehicle 30 on such a loading platform 15. That is, after the small transport vehicle 30 is transferred from the work platform onto the loading platform 15, a flexible connecting member whose one end is fixed to the guard 16 provided around the loading platform 15 of the transporter 10 by the mounting bracket 21. The lock piece 23 connected by 22 is inserted from above into the space between the wheel support 34 and the tire 35 ′ of the wheel 35 in the body frame 31 of the small transport vehicle 30. By doing so, the lock piece 23 is pushed between the inside of the U-bent tip end portion of the wheel support portion 34 and the tire 35 'peripheral surface of the wheel 35, and a large resistance is applied to the tire 35'. The rotation of the wheel is prevented. Therefore, the small transport vehicle 30 is kept stationary on the loading platform by being fixed by the lock piece 23.
[0026]
On the other hand, in a state where the small transport vehicle 30 enters and is fixed on the loading platform 15, the handle 38 portion protrudes from the loading platform space above the guard 16, and therefore when the handle 38 is pushed down, At the connecting portion of the vehicle body frame 31 with the rear end portion of the main frame 32, the handle 38 is turned downward and folded through the connection fitting 40 with the hinge pin 39 as a fulcrum. In this way, as shown in FIG. 6, the small transport vehicle 30 can be accommodated within the range surrounded by the guard 16 of the loading platform 15. Therefore, when the transporter 10 moves up and down, it can be lifted and lowered to a target position without contacting a work scaffold near the hoistway. In addition, even if the width (depth) dimension of the loading platform 15 of the transporter 10 is narrow, the handle 38 of the small transport vehicle 30 is folded downward so that it can be used and transported efficiently.
[0027]
When unloading the small transport vehicle 30 from the loading platform 15 of the transporter 10, if the holding side guard 16 is pulled up, the upper lateral member 16 a is in a state where the end 16 b ′ of the guard 16 abuts against the retaining pin 18. Both end portions 16a 'of the column 17 come out upward from the opening groove portion 17a of the support column 17, so that when the worker on the work scaffold rotates as it is toward the front side as shown by a two-dot chain line in FIG. The small transport vehicle 30 mounted on the upper surface of the guard 16 as a stepping plate can be lowered from the loading platform.
[0028]
After the guard 16 is laid down, when the bundle 38 of the small transportation vehicle 30 is lifted, the free end of the connection fitting 40 is turned around the hinge pin 39 and the main frame end of the body frame 31 is turned. The handle 38 is kept engaged when used. Next, when the operator gets on the loading platform and pulls out the lock piece 23 of the fixing means 20 from the fixed portion, the wheel 35 becomes free, so that it becomes easy to move. Therefore, the operator can lift the handle 38 and lift the pair of leg portions 33, 33 so that the small transport vehicle 30 can be moved down from the loading platform 15 onto the work platform to the work platform. The loading of the small transport vehicle onto the loading platform can be performed by an operation reverse to that performed when the small transport vehicle is unloaded. Further, since the removed lock piece 23 is not released by the connecting member, it is not lost by being placed in a corner portion or the like on the loading platform 15 so that the work is not hindered.
[0029]
Moreover, in order to transport materials other than normal equipment and loose items, they can be transported directly on the loading platform. When transporting long materials, etc., the leg is inserted into a pipe provided adjacent to the base of the support column, and an auxiliary support frame of an appropriate height is attached, and the material to be transported to the auxiliary support frame, etc. You can make it drown and carry it.
[0030]
In the above description, the lift of the type in which the lifting / lowering drive of the transporter is lifted / lowered by the meshing drive of the rack and the gear is described. However, even in the rope-driven lift that lifts and lowers the transporter by the wire rope, By making the structure similar, the same effect as described above can be obtained.
[0031]
The construction lift of the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the scope of the present invention.
[Brief description of the drawings]
FIG. 1 is a front view showing a main part of a construction lift according to the present embodiment.
FIG. 2 is a side view of FIG. 1;
FIG. 3 is a plan view of the carrier platform (a), an enlarged plan view of the guard mounting portion (b), and an enlarged side view of the guard mounting portion.
FIG. 4 is a side view (a) of a small transport vehicle and a perspective view (b) showing details of a handle attachment portion.
FIG. 5 is a plan view of FIG. 4 (a).
FIG. 6 is a diagram showing a mode in which a small transport vehicle is mounted on a carrier loading platform.
FIG. 7 is a plan view of a fixing means.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Construction lift 2 Lifting support body 2a Guide rail 10 Carrying device 11 Lifting frame 15 Loading platform 16 Guards 16a and 16b Guard lateral member 17 Support 20 Fixing means 21 Mounting bracket 23 Lock piece 30 Small transport vehicle 31 Body frame 34 Wheel support 35 Wheel 35 'Tire 38 Handle 39 Hinge pin 40 Connecting bracket

Claims (2)

In a construction lift provided with a carrier that is guided by a guide rail of an elevating support that is supported and erected on a side part of a structure or the like and that is provided with a loading platform on a front part thereof, so that it can be raised and lowered.
A small transport vehicle is mounted on the loading platform, and is detachably inserted between the frame and the wheel at the end of the frame of the small transport vehicle mounted on the guard portion on the opposite side of the loading platform. A fixing means for fixing the small transport vehicle, the guard on the loading / unloading side of the loading platform is held on both sides so as to be slidable up and down, and is provided so that it can be tilted up by raising a predetermined amount. Construction lift characterized in that it also functions as a footboard . The fixing means of the small transportation vehicles, stationary wedge-shaped engaged was inserted between the mounting member to be attached to the guard provided around the loading platform, the distal end portion of the wheel and the vehicle body frame of the small transportation vehicle The construction lift according to claim 1, comprising a member and a connecting member that connects the fixing member and the mounting member .

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