Widening device for trolleys, and trolleys

Abstract

The challenge is to prevent wide or long materials from falling when they are stacked and transported. [Solution] A cart widening device that can widen the loading width of a cart, comprising: a first widening section provided at one end of the cart and capable of widening the loading width; a second widening section provided at the other end of the cart and capable of widening the loading width; a first support section provided at the first widening section and capable of detachably attaching a first fall prevention section; and a second support section provided at the second widening section and capable of detachably attaching a second fall prevention section.

Description

Technical Field

[0001] The present invention relates to a width expansion device for a carriage that can be expanded as needed and is used at a construction site or the like, and to a carriage.

Background Art

[0002] Generally, the width of a carriage is manufactured to match the width of a door, which is about 70 cm. However, at a construction site or the like after passing through the door, operations of transporting wide materials such as gypsum boards, ducts, light steel frames, PVC pipes, or long materials such as handrails with a carriage are frequently performed. In that case, when transporting a wide gypsum board or a large amount of ducts, etc., the narrow width of the carriage is inefficient. Also, although a carriage with only a floor part can be used to transport a wide gypsum board that exceeds the carriage width, since there is no support, it is difficult to transport it stably at a construction site with a poor scaffold.

[0003] Patent Document 1 describes matters in which a laundry storage basket is prevented from shifting in the front-rear, left-right directions when it is expanded in the width direction.

Prior Art Documents

Patent Documents

[0004] Patent Document 1: Japanese Utility Model Laid-Open No. 7-9300

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, although the device described in Patent Document 1 can transport wide materials, there is a problem that it cannot prevent falling when transporting stacked wide materials or long materials.

[0006] An object of the present invention is to solve the above problems and enable transportation while preventing the falling of wide materials and long materials.

Means for Solving the Problems

[0007] To solve the above problems, the present invention Attached to the floor of the trolleyA widening device for a trolley that can widen the loading width, One end of the aforementioned bogie on the floor portion A first widening section is provided therein, which allows for widening of the loading width, The other end of the aforementioned bogie on the floor portion A second widening section is provided therein, which allows for widening of the loading width, A first support portion is provided in the first widening portion, and a first fall prevention portion is detachable from it, A second support portion is provided in the second widening portion, and the second fall prevention portion is detachable from it, This invention provides a widening device for a trolley, characterized by being equipped with [a specific feature].

[0008] This configuration allows for an increased loading width on the trolley for transporting wide materials, and by providing a fall prevention mechanism for stacking wide or long materials, it is possible to transport wide or long materials while preventing them from falling.

[0009] The first widening section is held in a way that allows it to be widened, and the trolley On the floor portion A first fixing part having a detachable first insertion part, The second widening section is held in a manner that allows it to be widened, and the trolley On the floor portion A second fixing part having a detachable second insertion part, The widening device for a trolley according to claim 1, characterized by comprising the above.

[0010] This configuration allows the first and second widening sections to be mounted on the trolley in a way that allows them to be freely widened.

[0011] The widening device for a trolley may be configured to include a holding part capable of coaxially holding the first fixing part and the second fixing part.

[0012] This configuration allows for highly reproducible widening without the widening section shifting.

[0013] The widening device for a trolley may be configured to include an extended state maintenance unit capable of maintaining the extended state of the first widening unit or the second widening unit.

[0014] With this configuration, even if the road surface is uneven during transportation, the widened width can be stably maintained.

[0015] A cart width expansion device, A rope support section capable of supporting ropes that can secure the cargo in the front-to-back direction. may be configured to include.

[0016] With this configuration, the loaded goods can be easily tied with ropes for stable transportation.

[0017] Further, in order to solve the above problems, the present invention provides a floor part, a plurality of casters provided on the floor part, at The above one end of the front or rear of the floor part, a first width expansion part capable of expanding the loading width, at The above the other end of the front or rear of the floor part, a second width expansion part capable of expanding the loading width, a first support part provided on the first width expansion part and detachable from the first fall prevention part, a second support part provided on the second width expansion part and detachable from the second fall prevention part, and provides a cart characterized by including. <[

[0018] With this configuration, the loading width of the cart can be expanded for transporting wide materials, and by providing a fall prevention part for stacked transportation of wide materials and long materials, the fall of wide materials and long materials can be prevented and transported.

Effect of the Invention

[0019] With the cart width expansion device and the cart of the present invention, the fall of wide materials and long materials can be prevented and transported.

Brief Description of the Drawings

[0020] [Figure 1] A diagram for explaining the cart in Embodiment 1 of the present invention. [Figure 2] A diagram for explaining the cart width expansion device in Embodiment of the present invention. [Figure 3] A diagram for explaining the cart in Embodiment 2 of the present invention. [Figure 4] A diagram illustrating a widening device for a trolley in Embodiment 2 of the present invention. [Figure 5] A diagram illustrating the trolley in Embodiment 3 of the present invention. [Figure 6] A diagram illustrating a widening device for a trolley in Embodiment 3 of the present invention. [Figure 7] A diagram illustrating the holding portion in Embodiment 3 of the present invention. [Figure 8] A diagram illustrating a widening device for a trolley in Embodiment 4 of the present invention. [Figure 9] A diagram illustrating the trolley in Embodiment 5 of the present invention. [Figure 10] A diagram illustrating the extension state maintenance part in Embodiment 5 of the present invention. [Figure 11] A diagram illustrating the use of the trolley in Examples 1 and 5 of the present invention. [Modes for carrying out the invention] [Examples]

[0021] Embodiment 1 of the present invention will be described with reference to Figures 1, 2, and 9. Figure 1 is a diagram illustrating the trolley in Embodiment 1 of the present invention, where (a) shows the trolley in a narrowed state and (b) shows the trolley in a widened state. Figure 2 is a diagram illustrating the trolley widening device in Embodiment 1 of the present invention. Figure 11 is a diagram illustrating an example of the use of the trolley in Embodiments 1-5 of the present invention.

[0022] The trolley 10 in Embodiment 1 comprises a floor section 11, six casters 12 (12a, 12b, 12c, 12d, 12e, 12f) provided on the floor section 11, a first widening section 13a provided at one end of the front F of the floor section 11 that can widen the loading width, a second widening section 14a provided at the other end of the front F of the floor section 11 that can widen the loading width, a first support section 15a provided on the first widening section 13a to which a first fall prevention section 17a can be detachably attached, and a second widening section 14a The floor section 11 is provided with a second support section 16a to which the second fall prevention section 18a can be attached and detached, a third widening section 13b provided at one end of the rear L of the floor section 11 and capable of widening the loading width, a fourth widening section 14b provided at the other end of the rear L of the floor section 11 and capable of widening the loading width, a third support section 15b provided at the third widening section 13b and capable of widening the third fall prevention section 17b, and a fourth support section 16b provided at the fourth widening section 14b and capable of widening the fourth fall prevention section 18b.

[0023] The first widening section 13a, the second widening section 14a, the third widening section 13b, and the fourth widening section 14b are made of square pipes formed by bending aluminum plates to create a hollow cross-section, and can be screwed to the floor section 11. This allows the load to be fixed at a desirable loading width.

[0024] In other words, the first widening section 13a can be screwed to one end of the front F of the floor section 11, and by screwing it in while widened in the widening direction D, the loading width of the trolley 10 can be increased. Also, by screwing it in while narrowed in the widening direction D (see Figure 1(a)), the loading width of the trolley 10 can be narrowed, allowing it to pass through narrow passages such as doors. The second widening section 14a can be screwed to the other end of the front F of the floor section 11, and by screwing it in while widened in the widening direction D (see Figure 1(b)), the loading width of the trolley 10 can be increased, allowing it to transport wide members.

[0025] Similarly, the third widening section 13b can be screwed to one end of the rear L of the floor section 11, and by screwing it in while widened in the widening direction D, the loading width of the trolley 10 can be increased. Conversely, by screwing it in while narrowed in the widening direction D, the loading width of the trolley 10 can be decreased. The fourth widening section 14b can be screwed to the other end of the rear L of the floor section 11, and by screwing it in while widened in the widening direction D (see Figure 1(b)), the loading width of the trolley 10 can be increased. Conversely, by screwing it in while narrowed in the widening direction D (see Figure 1(a)), the trolley width of the trolley 10 can be decreased.

[0026] As shown in Figure 11, to prevent the stacked wide material W from falling during transport, a first fall prevention part 17a is inserted into and held in a first support part 15a provided on the first widening part 13a. Similarly, a first fall prevention part 17b is inserted into and held in a first support part 15b provided on the first widening part 13b, a second fall prevention part 18a is inserted into and held in a second support part 16a provided on the second widening part 14a, and a second fall prevention part 18b is inserted into and held in a second support part 16b provided on the second widening part 14b. The first fall prevention sections 17a, 17b and the second fall prevention sections 18a, 18b are made of 1m long iron pipes, while the first support sections 15a, 15b and the second support sections 16a, 16b are stainless steel sheath pipes with recesses into which the first fall prevention sections 17a, 17b and the second fall prevention sections 18a, 18b can be inserted.

[0027] As a result, the first fall prevention part 17a can be detachably inserted into the first support part 15a. Similarly, the first fall prevention part 17b can be detachably inserted into the first support part 15b, the second fall prevention part 18a can be detachably inserted into the second support part 16a, and the second fall prevention part 18b can be detachably inserted into the second support part 16b. For example, when loading wide material W onto the trolley 10, the first fall prevention parts 17a, 17b or the second fall prevention parts 18a, 18b can be removed before loading, and then attached for transport, allowing for easy loading and safe transport.

[0028] In Example 1, the first fall prevention section 17a, 17b and the second fall prevention section 18a, 18b were constructed from 1m long iron pipes, but this is not necessarily limited to this and can be modified as appropriate. For example, the length may be 1m or more, or less than 1m, and instead of just pipes, a configuration with a rectangular fence attached to the pipes may be used. Also, the material may be aluminum or the like instead of iron.

[0029] In Example 1, the widening section and fall prevention section were configured to be provided at four locations on the floor section 11, but this is not necessarily limited to this configuration and can be modified as appropriate. At a minimum, they should be provided at two locations, either at the front F or the rear L.

[0030] Thus, in Example 1, the widening device for a trolley is capable of widening the loading width onto the trolley, A first widening section is provided at one end of the aforementioned trolley, which is capable of widening the loading width, A second widening section is provided at the other end of the aforementioned trolley, which is capable of widening the loading width, The first widening portion is provided with a first support portion to which the first fall prevention portion can be detachably attached, The second widening portion is provided with a second support portion to which the second fall prevention portion can be detachably attached, A widening device for trolleys, characterized by having the following features, can widen the loading width of the trolley for transporting wide materials, and can also prevent wide or long materials from falling during transport by providing a fall prevention section for stacked transport of wide or long materials.

[0031] Also, the floor and, Multiple casters are provided on the floor, A first widening section is provided at one end of the floor section, either the front or the rear, and capable of widening the loading width. A second widening section is provided at the front or rear end of the floor section, which is capable of widening the loading width, The first widening portion is provided with a first support portion to which the first fall prevention portion can be detachably attached, The second widening portion is provided with a second support portion to which the second fall prevention portion can be detachably attached, A trolley equipped with the following features allows for an increased loading width for transporting wide materials, and by providing a fall prevention section for transporting stacks of wide or long materials, it is possible to transport wide or long materials while preventing them from falling. [Examples]

[0032] Embodiment 2 of the present invention differs from Embodiment 1 in that the widening portion is not screwed to the floor, but is inserted into a fixed part attached to the floor, and the widening portion is slid to allow for adjustable widening. Embodiment 2 will be described with reference to Figures 3, 4, and 11. Figure 3 is a diagram illustrating the trolley in Embodiment 2 of the present invention, where (a) shows the narrowed width and (b) shows the widened width. Figure 4 is a diagram illustrating the trolley widening device in Embodiment 2 of the present invention. Figure 11 is a diagram illustrating examples of trolley use in Embodiments 1-5 of the present invention.

[0033] The trolley 20 in Embodiment 2 includes a floor section 11, six casters 12 (12a, 12b, 12c, 12d, 12e, 12f) provided on the floor section 11, a first widening section 13a provided at one end of the front F of the floor section 11 that can widen the loading width, a second widening section 14a provided at the other end of the front F of the floor section 11 that can widen the loading width, a first support section 15a provided on the first widening section 13a to which the first fall prevention section 17a can be attached and detached, and the second widening section 14a It is provided with a second support section 16a to which the second fall prevention section 18a can be detached, a third widening section 13b provided at one end of the rear L of the floor section 11 and capable of widening the loading width, a fourth widening section 14b provided at the other end of the rear L of the floor section 11 and capable of widening the loading width, a third support section 15b provided on the third widening section 13b and capable of detaching the third fall prevention section 17b, and a fourth support section 16b provided on the fourth widening section 14b and capable of detaching the fourth fall prevention section 18b, in addition, The device includes first fixing parts 21a and 21b that hold the first widening parts 13a and 13b in a widenable manner and have a first insertion part 23 that can be attached to and detached from the trolley 20, and second fixing parts 22a and 22b that hold the second widening parts 14a and 14b in a widenable manner and have a second insertion part 24 that can be attached to and detached from the trolley 20.

[0034] In other words, the widening device 29 for the trolley in Embodiment 2 includes, in addition to the first widening section 13a, the second widening section 14a, the third widening section 13b, and the fourth widening section 14b, the first fixing sections 21a, 21b and the second fixing sections 22a, 22b.

[0035] The first fixing parts 21a, 21b and the second fixing parts 22a, 22b are made of square pipes made by bending stainless steel plates to create a hollow cross-section. The first widening part 13a is slidably fitted into the hollow cross-section of the first fixing part 21a, the second widening part 14a is slidably fitted into the hollow cross-section of the second fixing part 22a, the third widening part 13b is slidably fitted into the hollow cross-section of the first fixing part 21b, and the fourth widening part 14b is slidably fitted into the hollow cross-section of the second fixing part 22b. In addition, the first fixing parts 21a, 21b and the second fixing parts 22a, 22b are provided with first insertion parts 23a, 23b and second insertion parts 24a, 24b at their respective ends, and are inserted into and held in openings provided at one end of the front F, one end of the rear L, the other end of the front F, and the other end of the rear L of the floor part 11. The first fixing parts 21a, 21b and the second fixing parts 22a, 22b are made of stainless steel square pipes, which allows the first widening part 13a, the second widening part 14a, the third widening part 13b, and the fourth widening part 14b to slide smoothly within the hollow section of the cross-section.

[0036] As a result, the first widening section 13a, the second widening section 14a, the third widening section 13b, and the fourth widening section 14b can slide within the hollow cross-section of the first fixing sections 21a, 21b and the second fixing sections 22a, 22b, without being screwed to the floor section 11, thereby extending or contracting to freely widen to the required width.

[0037] In Example 2, the widening section, fixing section, and fall prevention section were configured to be provided at four locations on the floor section 11, but this is not necessarily limited to this configuration and can be modified as appropriate. It is sufficient to provide them at least at two locations, either at the front F or rear L.

[0038] Thus, in Example 2 as well, the widening device for a trolley is capable of widening the loading width onto the trolley, A first widening section is provided at one end of the aforementioned trolley, which is capable of widening the loading width, A second widening section is provided at the other end of the aforementioned trolley, which is capable of widening the loading width, The first widening portion is provided with a first support portion to which the first fall prevention portion can be detachably attached, The second widening portion is provided with a second support portion to which the second fall prevention portion can be detachably attached, A widening device for trolleys, characterized by having the following features, can widen the loading width of the trolley for transporting wide materials, and can also prevent wide or long materials from falling during transport by providing a fall prevention section for stacked transport of wide or long materials.

[0039] Furthermore, the first fixing portion has a first insertion portion that can be attached to and detached from the trolley and holds the first widening portion in a widenable manner, By providing a second fixing part that holds the second widening part in a widenable manner and has a second insertion part that can be attached to and detached from the trolley, the first widening part and the second widening part can be mounted on the trolley in a widenable manner.

[0040] Furthermore, the floor and, Multiple casters are provided on the floor, A first widening section is provided at one end of the floor section, either the front or the rear, and capable of widening the loading width. A second widening section is provided at the front or rear end of the floor section, which is capable of widening the loading width, The first widening portion is provided with a first support portion to which the first fall prevention portion can be detachably attached, The second widening portion is provided with a second support portion to which the second fall prevention portion can be detachably attached, A trolley equipped with the following features allows for an increased loading width for transporting wide materials, and by providing a fall prevention section for transporting stacks of wide or long materials, it is possible to transport wide or long materials while preventing them from falling. [Examples]

[0041] Embodiment 3 of the present invention differs from Embodiment 2 in that it is equipped with a holding part capable of coaxially holding the first fixing part and the second fixing part. Embodiment 3 will be described with reference to Figures 5, 6, 7, and 11. Figure 5 is a diagram illustrating the trolley in Embodiment 3 of the present invention, where (a) shows the narrowed width and (b) shows the widened width. Figure 6 is a diagram illustrating the widening device for the trolley in Embodiment 3 of the present invention, where (a) is a side view showing the narrowed width and (b) shows the widened width. Figure 7 is a diagram illustrating the holding part in Embodiment 3 of the present invention. Figure 11 is a diagram illustrating examples of the use of the trolleys in Embodiments 1-4 of the present invention.

[0042] The trolley 30 in Example 3 has the configuration of Example 2 in addition to the following: A holding part 31a capable of coaxially holding the first fixing part 21a and the second fixing part 22a, A holding part 31b capable of coaxially holding the first fixing part 21b and the second fixing part 22b, It is equipped with.

[0043] The holding parts 31a and 31b are made of square pipes formed by bending aluminum plates to create a hollow cross-section. The first fixing part 21a can be inserted through one opening in the hollow cross-section of the holding part 31a, and the second fixing part 22a can be inserted through the other opening in the hollow cross-section of the holding part 31a, thereby holding the first fixing part 21a and the second fixing part 22a coaxially. Similarly, the first fixing part 21b can be inserted through one opening in the hollow cross-section of the holding part 31b, and the second fixing part 22b can be inserted through the other opening in the hollow cross-section of the holding part 31b, thereby holding the first fixing part 21b and the second fixing part 22b coaxially. This prevents the first fixing parts 21a and 22a and the second fixing parts 22a and 22b from rotating or shifting with the first insertion parts 23a and 23b and the second insertion parts 24a and 24b as pivot points.

[0044] In Embodiment 3, the structure was configured with two holding parts, but this is not necessarily the only option and can be modified as appropriate. At a minimum, the widening part, the fixing part, and the fall prevention part should be provided at two locations on the front F or rear L of the floor part 11.

[0045] Thus, in Example 3 as well, the widening device for a trolley is capable of widening the loading width onto the trolley, A first widening section is provided at one end of the aforementioned trolley, which is capable of widening the loading width, A second widening section is provided at the other end of the aforementioned trolley, which is capable of widening the loading width, The first widening portion is provided with a first support portion to which the first fall prevention portion can be detachably attached, The second widening portion is provided with a second support portion to which the second fall prevention portion can be detachably attached, A widening device for trolleys, characterized by having the following features, can widen the loading width of the trolley for transporting wide materials, and can also prevent wide or long materials from falling during transport by providing a fall prevention section for stacked transport of wide or long materials.

[0046] Furthermore, by providing a holding part that can coaxially hold the first fixing part and the second fixing part, the widening part can be widened with good reproducibility without shifting.

[0047] Furthermore, the floor and, Multiple casters are provided on the floor, A first widening section is provided at one end of the floor section, either the front or the rear, and capable of widening the loading width. A second widening section is provided at the front or rear end of the floor section, which is capable of widening the loading width, The first widening portion is provided with a first support portion to which the first fall prevention portion can be detachably attached, The second widening portion is provided with a second support portion to which the second fall prevention portion can be detachably attached, A trolley equipped with the following features allows for an increased loading width for transporting wide materials, and by providing a fall prevention section for transporting stacks of wide or long materials, it is possible to transport wide or long materials while preventing them from falling. [Examples]

[0048] Embodiment 4 of the present invention differs from Embodiment 3 in that a cover is attached to the widening device for a trolley of Embodiment 3 to eliminate the step on the top surface (loading surface). Embodiment 4 will be described with reference to Figures 8 and 11. Figure 8 is a diagram illustrating the widening device for a trolley in Embodiment 4 of the present invention, where (a) is a diagram of the cover, (1) is a top view, (2) is a front view, (3) is a side view, and (b) is a diagram showing the widening device for a trolley with the cover attached. Figure 11 is a diagram illustrating examples of trolley use in Embodiments 1-5 of the present invention.

[0049] In Example 4, the widening device 49 for the trolley 40 includes a cover 41 in addition to the configuration of Example 3.

[0050] The cover 41 has a U-shape formed by bending both ends of a long aluminum plate. The support insertion hole 43 on the top surface of this cover 41 is inserted into the first support part 15 of the widening device 39 for the trolley in Example 3, and the support insertion hole 44 is inserted into the second support part 16 and placed over it to form the widening device 49 for the trolley in Example 4. Furthermore, if the widening device 39 for the trolley is also installed at the rear, the support insertion hole 43 on the top surface of the cover 41 is inserted into the first support part 15 of the widening device 39 for the trolley, and the support insertion hole 44 is inserted into the second support part 16 and placed over it to form the widening device 49 for the trolley in Example 4. This eliminates the step difference on the loading surface caused by the widening part, fixing part, and holding part, and eliminates rattling when wide or long materials are loaded onto the trolley.

[0051] Thus, in Example 4 as well, the trolley widening device can widen the loading width onto the trolley, A first widening section is provided at one end of the aforementioned trolley, which is capable of widening the loading width, A second widening section is provided at the other end of the aforementioned trolley, which is capable of widening the loading width, The first widening portion is provided with a first support portion to which the first fall prevention portion can be detachably attached, The second widening portion is provided with a second support portion to which the second fall prevention portion can be detachably attached, A widening device for trolleys, characterized by having the following features, can widen the loading width of the trolley for transporting wide materials, and can also prevent wide or long materials from falling during transport by providing a fall prevention section for stacked transport of wide or long materials.

[0052] Also, the floor and, Multiple casters are provided on the floor, A first widening section is provided at one end of the floor section, either the front or the rear, and capable of widening the loading width. A second widening section is provided at the front or rear end of the floor section, which is capable of widening the loading width, The first widening portion is provided with a first support portion to which the first fall prevention portion can be detachably attached, The second widening portion is provided with a second support portion to which the second fall prevention portion can be detachably attached, A trolley equipped with the following features allows for an increased loading width for transporting wide materials, and by providing a fall prevention section for transporting stacks of wide or long materials, it is possible to transport wide or long materials while preventing them from falling. [Examples]

[0053] Embodiment 5 of the present invention differs from Embodiments 3 and 4 in that it is equipped with an extension state maintenance unit that can maintain the widened state of the widened section. Embodiment 5 will be described with reference to Figures 8 and 11. Figure 8 is a diagram illustrating the widening device for a trolley in Embodiment 4 of the present invention. Figure 9 is a diagram illustrating the trolley in Embodiment 5 of the present invention. Figure 10 is a diagram illustrating the extension state maintenance unit in Embodiment 5 of the present invention, where (a) is a side view and (b) is a front view. Figure 11 is a diagram illustrating an example of the use of the trolley in Embodiments 1-5 of the present invention.

[0054] The trolley 50 in Example 5 has the configuration of Example 3 or Example 4 in addition to the following: It is equipped with an extension state maintenance unit 51.

[0055] In other words, the trolley 50 in Embodiment 5 is equipped with an extended state maintenance unit 51 capable of maintaining the extended state of the first widening section 13 or the second widening section 14. The extended state maintenance unit 51 is for maintaining the widened state of the first widening section 13 or the second widening section 14 when it is extended or retracted.

[0056] In Example 5, a bolt having an annular portion as shown in Figure 10 is used as the extension state maintenance portion 51. The extension state can be maintained by inserting and fixing this extension state maintenance portion 51 into the extension state maintenance portion insertion portion 42 (42a, 42b) shown in Figure 8. The extension state maintenance portion insertion portion 42 (42a, 42b) is an opening that passes through the widening portion, support portion, and fixing portion. By inserting the extension state maintenance portion 51 into this opening and tightening it with a nut, it is possible to prevent the widening portion, support portion, and fixing portion from shifting relative to each other. This prevents the widening portion and support portion from shifting relative to the fixing portion during transportation, thereby preventing the load from collapsing.

[0057] Furthermore, the annular portion of the extension-maintaining portion 51 can be used as a rope support portion 52. The load can be secured by supporting the two or four rope engagement portions 52 shown in Figure 9 with a rope.

[0058] In Example 5, the bolt was used as the extension state maintenance part 51, but this is not necessarily limited to this and can be changed as appropriate. For example, the boundary between the widened part and the support part, or the boundary between the support part and the fixed part, may be fixed with an elastic material such as rubber.

[0059] Thus, in Example 5, the widening device for a trolley is capable of widening the loading width onto the trolley, A first widening section is provided at one end of the aforementioned trolley, which is capable of widening the loading width, A second widening section is provided at the other end of the aforementioned trolley, which is capable of widening the loading width, The first widening portion is provided with a first support portion to which the first fall prevention portion can be detachably attached, The second widening portion is provided with a second support portion to which the second fall prevention portion can be detachably attached, A widening device for trolleys, characterized by having the following features, can widen the loading width of the trolley for transporting wide materials, and can also prevent wide or long materials from falling during transport by providing a fall prevention section for stacked transport of wide or long materials.

[0060] Furthermore, by providing an extension-state maintenance section that can maintain the extended state of the first or second widening section, the widening width can be stably maintained even if there are uneven surfaces on the road during transport. In addition, by providing a rope support section for the extension-state maintenance section, the loaded material can be easily tied with a rope for stable transport.

[0061] Furthermore, the floor and, Multiple casters are provided on the floor, A first widening section is provided at one end of the floor section, either the front or the rear, and capable of widening the loading width. A second widening section is provided at the front or rear end of the floor section, which is capable of widening the loading width, The first widening portion is provided with a first support portion to which the first fall prevention portion can be detachably attached, The second widening portion is provided with a second support portion to which the second fall prevention portion can be detachably attached, A trolley equipped with the following features allows for an increased loading width for transporting wide materials, and by providing a fall prevention section for transporting stacks of wide or long materials, it is possible to transport wide or long materials while preventing them from falling. [Industrial applicability]

[0062] The widening device for trolleys and the trolleys of the present invention can be widely used in the field of material transport at construction sites and the like. [Explanation of Symbols]

[0063] 10: Dolly 11: Floor part 12 (12a, 12b, 12c, 12d, 12e, 12f): Caster 13a: First widening section 14a: Second widening section 13b: Third widening section 14b: Fourth widening section 15 (15a, 15b): First support part 16 (16a, 16b): Second support part 17(17a, 17b): 1st fall prevention part 18 (18a, 18b): 2nd fall prevention part 19: Widening device for trolleys 20: Dolly 21 (21a, 21b): 1st fixed part 22 (22a, 22b): Second fixed part 23(23a, 23b): First insertion section 24(24a, 24b): Second insertion section 29: Widening device for trolleys 30: Dolly 31 (31a, 31b): Holding part 39: Widening device for trolleys 41: Cover 42: Extension state maintenance part insertion part 43 (43a, 43b): Support insertion hole 44 (44a, 44b): Support insertion hole 49: Widening device for trolleys 50: Dolly 51: Extension state maintenance part 52: Rope support section D: Widening direction F:Front L: Backward

Claims

1. A widening device for a trolley that can be attached to the floor of the trolley to widen the loading width, A first widening section is provided on the floor portion at one end of the trolley, which is capable of widening the loading width, A second widening section is provided on the floor portion at the other end of the trolley, which is capable of widening the loading width, A first support portion is provided in the first widening portion, and a first fall prevention portion can be attached to and detached from it, A second support portion is provided in the second widening portion, and a second fall prevention portion can be attached to and detached from it, A widening device for a trolley, characterized by being equipped with the following features.

2. The first widening portion is held in a widenable manner, and the first fixing portion has a first insertion portion that is detachable from the floor portion of the trolley, The second fixing part holds the second widening part in a widenable manner and has a second insertion part that is detachable from the floor of the trolley, The widening device for a trolley according to claim 1, characterized by comprising the above.

3. The widening device for a trolley according to claim 2, further comprising a holding portion capable of coaxially holding the first fixing portion and the second fixing portion.

4. The widening device for a trolley according to claim 1, further comprising an extension state maintenance unit capable of maintaining the extended state of the first widening section or the second widening section.

5. The widening device for a trolley according to claim 1, further comprising a rope support section capable of supporting a rope that can fix the load in the front-rear direction.

6. The floor and, Multiple casters are provided on the floor, A first widening section is provided at one end of the floor, either the front or the rear, which is capable of widening the loading width, A second widening section is provided at the front or rear end of the floor section, which is capable of widening the loading width, The first widening portion is provided with a first support portion to which the first fall prevention portion can be detachably attached, The second widening portion is provided with a second support portion to which the second fall prevention portion can be detachably attached, A trolley characterized by having the following features.

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