Carriage for placing working platform

Abstract

To enable a working platform to be moved and carried in a stably placed state without inclining by front engaging members and a rear engaging member.SOLUTION: A carriage for placing a working platform includes: a front frame 4 having wheels 3, and on which right and left front legs F of the working platform S can be placed; a rear frame 5 having wheels 3, and on which right and left rear legs R of the working platform S can be placed; and connecting frames 6 for connecting the front frame 4 and the rear frame 5. The front frame 4 is provided with front engaging members 7 that engage with the front legs F to restrict right and left and upward movement of the front legs F. The rear frame 5 is provided with a rear engaging member 8 that engages with a connecting member L for connecting lower portions of right and left rear legs, from above, to restrict right and left and upward movement of the rear legs R.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a platform cart for moving and transporting a platform supported by front and rear legs. [Background technology]

[0002] Patent Document 1 discloses an assembly type cart that can be used to place and move an object to be transported.

[0003] This assembled trolley comprises a platform base on which one side of an object to be transported can be placed, a pair of trolley units each having two wheels attached to the underside of the platform base, and a connecting rod whose both ends are detachably connected to both trolley units and which connects the pair of trolley units to each other at a distance, the connecting rod being an extendable rod with an adjustable length consisting of an outer tube and an inner tube inserted into it, and each trolley unit having a wall that prevents the object from slipping off and is erected upward from the edge of the platform base (Claims).

[0004] Generally, a workbench has a top supported by a front leg frame and a rear leg frame, with the front leg frame having two tubular front legs connected to the left and right by multiple tread members at the top and bottom, and the rear leg frame having two tubular rear legs connected to the left and right by multiple connecting members at the top and bottom, and rear casters are provided on the lower back of the rear leg frame. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 7-232644 Summary of the Invention [Problem to be solved by the invention]

[0006] In the above-mentioned conventional technology, the front and rear legs of a workbench can be placed as the transported item on the base of an assembly-type trolley, and the horizontal movement of the front and rear legs can be restricted by a wall to prevent the transported item from slipping off.However, since workbenches are generally tall, they tend to sway, making it difficult to restrict the front and rear legs from tilting in the front-to-back or left-to-right directions.

[0007] SUMMARY OF THE INVENTION An object of the present invention is to provide a platform carrier that can solve the problems of the prior art.

[0008] The object of the present invention is to provide a cart for placing a workbench on which a workbench can be moved and transported in a stable position without tilting, by providing a front engagement member that engages with the lower part of the front legs of the workbench to prevent it from floating up, and a rear engagement member that engages with the lower connecting member of the rear legs of the workbench to prevent the rear legs from floating up. [Means for solving the problem]

[0009] The specific means for solving the problem in the present invention includes a front stand 4 having wheels 3 and capable of placing the left and right front legs F of the work platform S, a rear stand 5 having wheels 3 and capable of placing the left and right rear legs R of the work platform S, and a connecting frame 6 connecting the front stand 4 and the rear stand 5, The front base 4 is provided with a front engagement member 7 that engages with the front legs F to restrict left-right and upward movement of the front legs F. The rear base 5 is provided with a rear engaging member 8 that engages from above with a connecting member L that connects the lower parts of the left and right rear legs R, thereby restricting the rear legs R from moving left and right and upward. [Effects of the Invention]

[0010] According to the present invention, the front and rear engagement members allow the workbench to be moved and transported in a stable mounted state without tilting. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a perspective view of a truck showing an embodiment of the present invention. [Figure 2] FIG. [Figure 3] FIG. 1 is a side view of a cart on which a workbench is placed. [Figure 4] FIG. 1 is a front view of a cart on which a workbench is placed. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0013] Figures 1 to 7 illustrate a workbench mounting cart 1 for moving the installation location of the workbench S or transporting it to another location for storage, etc., and Figures 3 to 7 show the workbench S placed on the cart 1.

[0014] The workbench S is a typical one, and as shown in Figures 3 and 4, the top platform 21 is supported by a front leg frame 22 and a rear leg frame 23, and is foldable or disassembled. The front leg frame 22 has two front legs F made of rectangular tubular material, one on the left and one on the right, connected by multiple tread members 25 at the top and bottom. The rear leg frame 23 has two rear legs R made of rectangular tubular material, one on the left and one on the right, connected by multiple connecting members L at the top and bottom. Rear casters 26 are attached to the bottom of the rear legs R and the lowest connecting member L, protruding from the back of the rear leg frame 23.

[0015] A lifting handrail 27 is provided on the front leg frame 22, and overhead handrails 28 are provided on the upper parts of the front leg frame 22 and the rear leg frame 23, and are arranged on the left and right sides of the ceiling platform 21. Both the lifting handrail 27 and the overhead handrail 28 are detachable from the front leg frame 22 and the rear leg frame 23.

[0016] The work platform S has anti-slip caps 30 fitted to the lower ends of the left and right front legs F and rear legs R, and is placed on the installation surface with the front leg frame 22 and rear leg frame 23 spread apart, and the worker can climb up and down to the top platform 21 using the tread members 25 of the front leg frame 22. The rear leg frame 23 is in a substantially vertical position, but the front leg frame 22 is in a backward tilted position with its upper end further rearward than its lower end.

[0017] When the work platform S is to be relocated to a nearby location, the work platform S is tilted by lifting the front leg frame 22, and is moved with the rear casters 26 in contact with the ground. When the work platform S is to be moved to a distant location or transported for storage, it is placed on the cart 1, and the work platform S is moved or transported by moving the cart 1.

[0018] There are a plurality of models of the workbench S with different heights, and the models with different heights have different distances between the lower ends of the front leg frames 22 and the lower ends of the rear leg frames 23.

[0019] The cart 1 has a front base 4 with two wheels 3 on which the left and right front legs F of the work platform S can be placed, a rear base 5 with two wheels 3 on which the left and right rear legs R of the work platform S can be placed, and a connecting frame 6 connecting the front base 4 and the rear base 5, and is approximately rectangular in shape when viewed from above.

[0020] The front-to-back length and left-to-right width of the cart 1 correspond to the distance between the bottom ends of the legs of the front leg frame 22 and the rear leg frame 23 of the work platform S. Carts 1 with the same front-to-back length and left-to-right width are stored stacked in multiple tiers when not in use. The front frame 4 and rear frame 5 of the cart 1 on the upper tier are arranged above the front frame 4 and rear frame 5 of the cart 1 on the lower tier.

[0021] The front stand 4 has wheel stop members 4b fixed to the upper surfaces of both ends of a rectangular cylindrical base body 4a, caster wheels for the wheels 3 attached to the lower surfaces of both ends, auxiliary members 4c made of angle material fixed to the sides, and front engagement members 7 formed by bending a rod material fixed to these auxiliary members 4c.

[0022] The wheel stopper member 4b is formed of a U-shaped cross section, and the wheels 3 of the upper stacked carriage 1 enter into the upward open groove. The wheels 3 are two caster wheels, at least one of which is equipped with a brake.

[0023] The upper surface of the auxiliary material 4c is approximately flush with the upper surface of the base body 4a, and the front engaging member 7 is a rod material whose both ends first rise from the upper surface of the auxiliary material 4c and then protrude forward.This forward protruding portion is formed by bending a round bar into an approximately U-shape to form a central portion a and left and right side portions b, and the central portion a and the left and right side portions b are positioned above the upper surface of the base body 4a.

[0024] The front engagement member 7 is the first to engage with the lower end of the front leg F of the workbench S when the workbench S is placed on the trolley 1, and the front leg F is inserted between the left and right side parts b, and the front surface is abutted against the central part a, and then the front leg F is placed on the top surface of the table main body 4a.

[0025] The front legs F are engaged with the front engagement members 7 while placed on the top surface of the platform body 4a, so that the front and upward movement of the front legs F is restricted by the central portion a, and the left and right movement of the front legs F is restricted by the left and right side portions b. Since the front legs F are tilted backward, not only forward movement but also upward movement is restricted by the central portion a.

[0026] The rear stand 5 has a rectangular cylindrical base body 5a with wheel stoppers 5b fixed to the upper surfaces of both ends, caster wheels for the wheels 3 attached to the lower surfaces of both ends, angled support members 5c fixed to the sides, and a central upper surface A gate-shaped receiving base 15 is fixed to the rear engaging member 8, and a hook engaging device 16 made by bending a round bar into a roughly hook shape is provided on this receiving base 15. The receiving base 15, the hook engaging device 16, etc. form the rear engaging member 8.

[0027] The wheel stopper member 5b, like the wheel stopper member 4b, is formed from a U-shaped section, and the wheels 3 of the upper stacked carriage 1 enter into the upward open groove. The wheels 3 of the rear frame 5 also consist of two caster wheels, at least one of which is equipped with a brake.

[0028] The left and right rear legs R of the rear leg frame 23 can be placed on the upper surfaces of the base body 5a and the auxiliary member 5c, and when the rear legs R are placed, the connecting member L in a horizontal position comes close to the top of the receiving base 15. The horizontal upper part of this receiving base 15 is positioned so that it can face the connecting member L. The hook engaging device 16 engages with this close connecting member L from above, and fixes the lower part of the rear leg frame 23 between the base body 5a and the auxiliary member 5c.

[0029] The hook engaging device 16 is formed by bending the upper part of a vertical rod 16a into a U-shape to form a hook, and the vertical part passes through the upper part of the receiving base 15 from top to bottom, and the hook-shaped part can be pulled down by screwing in a wing nut 16b.

[0030] The hook-shaped portion of the hook engaging device 16 can be rotated horizontally above the receiving base 15, and can be retracted to a position where it does not interfere with the rear leg R approaching the upper part of the receiving base 15. Also, the receiving base 15 can be omitted, and the hook engaging device 16 can be attached to the base main body 5a or the auxiliary member 5c.

[0031] The connecting frame 6 has a first frame member 11 connected to one of the front frame 4 or the rear frame 5, and a second frame member 12 connected to the other, and the second frame member 12 is inserted into and fixed to the first frame member 11.

[0032] The first frame member 11 has two cylindrical members 11a, one end of which is connected to the front frame 4, connected by two front and rear connectors 11b. Each cylindrical member 11a has a small-corner auxiliary cylinder 11a2 inserted into the end of the large-corner cylindrical member 11a and bolted in place, and the small-corner auxiliary cylinder 11a2 is bolted to a fixed angle member e on the underside of the base body 4a via a backing plate f.

[0033] The second frame member 12 is formed of two cylindrical members 12a whose one end is connected to the rear frame 5, and each cylindrical member 12a has the same small opening as the auxiliary cylinder 11a2, and is inserted into the two cylindrical members 11a of the first frame member 11, which have a large opening.Like the auxiliary cylinder 11a2, it is bolted to a fixed angle member e on the underside of the base body 5a via a backing plate f.

[0034] Positioning means 13 for determining the insertion position is provided between the cylindrical member 11a of the first frame member 11 and the cylindrical member 12a of the second frame member 12 inserted therein. The positioning means 13 is configured so that a pin 13c having a finger hook 13b passes through a bracket 13a fixed to the cylindrical member 11a, and this pin 13c is inserted and engaged with an engagement hole 12c of a cylindrical member 12a inside the cylindrical member 11a via a spring 13d. The engagement holes 12c are formed at multiple locations in the longitudinal direction of the cylindrical member 12a.

[0035] The positioning means 13 can release the positioning of the second frame material 12 from the first frame material 11 by removing the pin 13c from the cylindrical material 12a against the spring 13d, and when the positioning is released, the front-to-back distance between the front frame 4 and the rear frame 5 can be changed.

[0036] As shown by the solid and phantom lines in Figure 5, workbenches S of different heights have different distances between the bottom ends of the legs of the front leg frame 22 and the rear leg frame 23, so the positioning means 13 of the connecting frame 6 is activated or deactivated to change the front-to-back distance between the front frame 4 and the rear frame 5 so that it fits the workbench S to be placed on.

[0037] In the above-described embodiment, the work platform S has a front base 4 having wheels 3 on which the left and right front legs F of the work platform S can be placed, a rear base 5 having wheels 3 on which the left and right rear legs R of the work platform S can be placed, and a connecting frame 6 connecting the front base 4 and the rear base 5. The front base 4 is provided with front engagement members 7 that engage with the front legs F to restrict left-right and upward movement of the front legs F, and the rear base 5 is provided with rear engagement members 8 that engage from above with connecting members L that connect the lower parts of the left and right rear legs R to restrict left-right and upward movement of the rear legs R.

[0038] This configuration allows the workbench S to be moved and transported in a stable position without tilting.

[0039] In the embodiment, the connecting frame 6 is connected to one of the front frame 4 and the rear frame 5. The first frame member 11 has two cylindrical members 11a connected at one end to the frame by a connector 11b, and the second frame member 12 has one end connected to the frame and the other end formed of two cylindrical members 12a inserted into the two cylindrical members 11a of the first frame member 11, and a positioning means 13 is provided between the cylindrical members 11a of the first frame member 11 and the cylindrical members 12a of the second frame member 12 inserted therein.

[0040] With this configuration, the distance between the front and rear stands 4 and 5 can be adjusted to fit the front-to-rear width of the workbench S to be moved and transported.

[0041] Furthermore, in the above embodiment, the front engagement member 7 is formed by bending a round bar into an approximately U-shape, forming a central portion a that restricts the upward movement of the front leg F, and left and right side portions b on the left and right of this central portion a that restrict the left and right movement of the front leg F.

[0042] With this configuration, the front engaging member 7 having a simple shape can not only regulate the left-right shifting movement of the front legs F but also regulate the lifting up of the front legs F.

[0043] Furthermore, in the above embodiment, the rear engaging member 8 has a receiving base 15 on the rear frame 5 that faces the connecting member L, and this receiving base 15 has a hook engaging device 16 that is made by bending a round bar into an approximately hook shape and engaging with the connecting member L from above.

[0044] With this configuration, the rear engaging member 8 having a simple shape can not only regulate the rear legs R from shifting in the front-rear direction, but also from floating up.

[0045] The present invention is not limited to the above-described embodiment, and the shapes, configurations, and combinations of the components can be changed.

[0046] For example, the bogie 1 may have three wheels, with one wheel 3 on either the front frame 4 or the rear frame 5 being the central wheel.

[0047] The front base 4 may omit the auxiliary member 4c and provide the front engagement member 7 on the base body 4a. Also, the front base 4 may have only one front engagement member 7, which may engage either the left or right front leg F or both the left and right front legs F simultaneously.

[0048] The rear stand 5 may be configured such that the auxiliary member 5c is omitted and the upper surface of the stand main body 5a is formed wide, or the connecting member L of the rear leg frame 23 is placed on the upper surface of the receiving stand 15.

[0049] When the workbench S to be placed is limited to one model, the connecting frame 6 may keep the front-to-rear distance between the front frame 4 and the rear frame 5 constant, and connect the first frame member 11 to the rear frame 5 and the second frame member 12 to the front frame 4. Furthermore, the tubular members that make up the connecting frame 6 may be circular tubular members in addition to rectangular tubular members. [Explanation of symbols]

[0050] 1 cart 3 wheels 4 Front mount 4a Unit body 4b Wheel stopper 4c Auxiliary materials 5 Rear stand 5a Unit body 5b Wheel stopper 5c Auxiliary materials 6 Connecting frame 7 Patent Publication No. 8 Rear engagement member 11 First frame material 11a Tube material 11a2 Auxiliary tube 11b Concatenation 12 Second frame material 12a Tube material 13 Positioning means 13a Bracket 13b Finger rest 13c pin 13d Spring 15 Cradle 16 Hook engagement device 16a rod 16b Wing nut 21 Tenba 22 Front leg frame 23 Rear leg frame 25 Tread members 26 Rear caster 27 Elevation handrail 28 Heavenly Handrail 30 Cap F front legs L connecting member R Hind legs S workbench a. Central part b Right and left sides e Angle iron f Backing plate

Claims

1. The work platform (S) includes a front stand (4) having wheels (3) on which the left and right front legs (F) of the work platform (S) can be placed, a rear stand (5) having wheels (3) on which the left and right rear legs (R) of the work platform (S) can be placed, and a connecting frame (6) connecting the front stand (4) and the rear stand (5), The front stand (4) is provided with a front engagement member (7) that engages with the front legs (F) to restrict left-right and upward movement of the front legs (F), The rear platform (5) is provided with a rear engagement member (8) that engages from above with a connecting member (L) that connects the lower parts of the left and right rear legs (R) to restrict the left-right and upward movement of the rear legs (R).

2. The connecting frame (6) has a first frame member (11) connected to one of the front frame (4) and the rear frame (5) and a second frame member (12) connected to the other, the first frame member (11) having two tubular members (11a) connected at one end to the frame by a connector (11b), the second frame member (12) having one end connected to the frame and two tubular members (12a) inserted at the other end into the two tubular members (11a) of the first frame member (11), and a positioning means (13) for determining the inserted position is provided between the tubular members (11a) of the first frame member (11) and the tubular members (12a) of the second frame member (12) inserted therein.

3. A cart for mounting a workbench as described in claim 1 or 2, characterized in that the front engagement member (7) is formed by bending a round bar into an approximately U-shape, forming a central portion (a) that restricts the upward movement of the front leg (F), and left and right side portions (b) on the left and right of this central portion (a) that restrict the left and right movement of the front leg (F).

4. 3. A workbench-mounted cart according to claim 1 or 2, characterized in that the rear engagement member (8) has a receiving base (15) on the rear base (5) that faces the connecting member (L), and this receiving base (15) has a hook engagement device (16) that is made by bending a round bar into an approximately hook shape and engages with the connecting member (L) from above.

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