Lifting device fixing device

Abstract

The present invention provides a device for fixing climbing equipment that can be attached to and detachably secured to ladders and other climbing equipment that are currently widely distributed and commonly used, thereby firmly fixing the climbing equipment to the ground and enabling safe work at heights above the ground. [Solution] A lifting device fixing device used to fix a lifting device to the ground, the lower end of which is placed on the ground and the upper end of which abuts against a predetermined height position of a work object erected on the ground, the device having a rod-shaped main body and a fixing part that is slidably attached along the length of the main body and can be detachably attached to the lifting device, the lower end of which the main body is inserted into the ground and fixes the lifting device to the ground.

Description

Technical Field

[0001] The present invention relates to a lifting tool fixing tool capable of fixing the legs of a lifting tool to the ground and standing the lifting tool along a work object such as a tree.

Background Art

[0002] For example, in the gardening industry or the like, when working by hanging a ladder (a double ladder in the case of a tall tree or the like) on a work object such as a tree, or when working using a step ladder or the like.

[0003] However, it is difficult to stably fix the lifting tool to the ground only by the legs of the lifting tool such as a ladder or a step ladder. When an operator rides on the lifting tool to work, the main body of the lifting tool may sway, and there may be a risk during work.

[0004] In response to the above problems, conventionally, a "ladder" has been proposed in which a spike portion is provided at the lower end of a lifting tool and the spike portion is stabbed into the ground to fix the lifting tool (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, such a "ladder" according to the prior art is not compatible with a general "ladder". Therefore, in order for an operator to perform safe and stable work at a predetermined height position such as a tree or a house, the "ladder" according to the above configuration is required.

[0007] In this case, the ladder relating to the above-mentioned conventional technology differs from an ordinary ladder in that it has a wide variety of components, making it more expensive than an ordinary ladder. This could result in higher purchase costs for workers, and consequently, higher labor costs for them.

[0008] Furthermore, the aforementioned conventional ladder has a predetermined length and width, as well as a weight commensurate with its size. Therefore, transporting it to the work site requires a means of transport such as a vehicle, which presents the disadvantage of cumbersome transport operations.

[0009] Furthermore, the installation process is complicated, as the lifting device must be erected and operated while the spiked portion is driven into the ground.

[0010] The object of the present invention, made in view of the above circumstances, is to provide a device for fixing climbing equipment that can be attached to and detachably fixed to climbing equipment such as ladders, which are currently widely distributed and commonly used, when necessary, and that firmly fixes the climbing equipment to the ground, enabling safe work at a height above the ground. [Means for solving the problem]

[0011] The invention described in claim 1 is a lifting device fixing device used to fix a lifting device to the ground, the lower end of which is placed on the ground and the upper end of which abuts against a predetermined height position of a work object erected on the ground, the lifting device having a rod-shaped main body and a fixing part that is slidably attached along the length of the main body and can be detachably attached to the lifting device, the lower end of the main body having a spike part that is inserted into the ground and fixes the lifting device to the ground, The spike portion is formed to have a length greater than the width of the main body, and is characterized by having a crossbeam portion fixed to the main body, and piercing portions provided at both ends of the crossbeam portion and projecting downward from the crossbeam portion to the main body. .

[0012] According to the invention described in claim 1 above, the main body is detachably attached to the lifting device via a fixing part, the spike part is inserted into the ground, and the lifting device is fixed to the ground. The spike portion protrudes from the lower end of the main body, and the main body is detachably attached to the lifting device. The spike portion is inserted into the ground, and the lifting device is fixed to the ground.

[0013] As a result, it becomes possible to operate the lifting device to keep it upright while inserting the spiked portion into the ground, thereby stably fixing the lifting device to the ground.

[0014] According to the invention described in claim 1, the lifting device fixing device according to the present invention is not a device that constitutes a lifting device such as a "ladder" as in the prior art, and therefore has the following effects.

[0015] In other words, during work, it can be attached and detached to climbing devices such as ladders that are currently widely used, eliminating the need to purchase and prepare a separate ladder with spikes.

[0016] Furthermore, since it is configured as a detachable fixing device for a ladder and is not a ladder itself, it is smaller than conventional ladders, and does not require a vehicle or other means of transport during delivery. Therefore, it is a lifting device fixing device with excellent portability and transportability.

[0017] Furthermore, because it has fewer components and a simpler structure than the conventional ladder described above, it is possible to further reduce manufacturing costs and also reduce labor costs for workers.

[0018] The invention described in claim 2 is characterized in that the main body is formed in an elongated hollow cylindrical shape and has a front portion that is located on the side opposite to the lifting device and on the worker side when fixed to the lifting device, and a rear portion that is located on the side opposite to the front portion in the width direction and on the lifting device side, and the fixing portion is formed in a rod shape and is attached to the main body via a sliding position adjustment fixing portion on the rear portion.

[0019] According to the invention described in claim 2 above, since the fixing part is attached to the main body via the slide position adjustment fixing part, it becomes possible to adjust and fix the position of the sliding part along the length direction of the main body.

[0020] As a result, with the spike portion protruding from the lower end portion of the main body portion by a desired protruding amount, the main body portion is fixed to the lifting tool, and while operating the lifting tool to stand upright, the spike portion is inserted into the ground and the lifting tool can be fixed to the ground.

[0021] In the invention according to claim 3, a slit portion is formed along the length direction on the front portion, and the slide position adjustment fixing portion includes a bolt portion in which a shaft portion is slidably disposed in the slit portion and is attached to the fixing portion, and a nut portion that can fix the bolt portion to the main body portion through the slit portion.

[0022] According to the invention described in claim 3 above, it is possible to adjust and fix the position of the fixing portion slid along the length direction of the main body portion by the bolt portion and the nut portion.

[0023] As a result, with the spike portion protruding from the lower end portion of the main body portion by a desired protruding amount, the main body portion is fixed to the lifting tool, and while operating the lifting tool to stand upright, the spike portion is inserted into the ground and the lifting tool can be fixed to the ground.

[0024] In the invention according to claim 4, the main body portion is formed in an elongated rectangular parallelepiped shape, and the fixing portion is formed in an elongated rectangular parallelepiped shape having the same width dimension as the main body portion, and the fixing portion has a slide guide portion that holds the main body portion slidably, and is fixed to the main body portion in a slidable state through the slide guide portion.

[0025] According to the invention described in claim 4 above, the fixing portion is fixed to the main body portion in a slidable state through the slide guide portion.

[0026] As a result, with the spike portion protruding from the lower end portion of the main body portion by a desired protruding amount, the main body portion is fixed to the lifting tool, and while operating the lifting tool to stand upright, the spike portion is inserted into the ground and the lifting tool can be fixed to the ground.

[0027] The invention described in claim 5 is characterized in that the fixing portion is provided with a clamp portion that can engage and fix the main body portion to the rung of the lifting device.

[0028] According to the invention described in claim 5 above, the main body can be engaged and fixed to the rung of the lifting device via the clamp portion.

[0029] As a result, attaching the lifting device fixing device to the lifting device, and removing the lifting device fixing device after the work is completed, can be done easily and reliably by engaging and disengaging the clamp portion with the rung.

[0030] The invention described in claim 6 is characterized in that the upper end of the main body is provided with a step portion that can be stepped on by a worker with their foot in order to drive and fix the spike portion into the ground when in use.

[0031] According to the invention described in claim 6 above, when a worker steps on the step portion provided at the upper end of the main body with their foot, the piercing portion of the spike is inserted into the ground, and the lifting device is fixed to the ground.

[0032] As a result, it becomes possible to easily and quickly insert the spiked portion into the ground while operating the lifting device to keep it upright, thereby fixing the lifting device to the ground. [Effects of the Invention]

[0033] According to the present invention, the device can be attached to and detachably fixed to climbing equipment such as ladders, which are widely available and commonly used, as needed. This provides the effect of securely fixing the climbing equipment to the ground and enabling safe work at heights elevated from the ground. [Brief explanation of the drawing]

[0034] [Figure 1] This is a side view showing one embodiment of a lifting device fixing device according to the present invention. [Figure 2] Figure 1 is a front view showing one embodiment of the lifting device fixing device. [Figure 3] Figure 1 is a rear view showing one embodiment of the lifting device fixing device. [Figure 4] This figure shows a method of using the lifting device fixing device according to the present invention, and represents the state before the lifting device is fixed to the ground using the lifting device fixing device. [Figure 5] This figure, following Figure 4, shows the lifting device fixed to the ground using a lifting device fixing device. [Modes for carrying out the invention]

[0035] The following describes an embodiment of the lifting device fixing device of the present invention with reference to Figures 1 to 5.

[0036] As shown in Figures 1 to 3, the lifting device fixing device 10 has its lower end 11 resting on the ground 12, and its upper end contacting a predetermined height position on a work object erected on the ground 12 (for example, a tree planted on the ground 12), and is used to fix the lifting device 14, which allows a worker to ascend and descend to the work object, to the ground 12.

[0037] Furthermore, the lifting device fixing device 10 has a rod-shaped main body 15 and a fixing part 16 that is slidably attached along the length of the main body 15 and can be detachably attached to the lifting device 14. The lower end 17 of the main body 15 has a spike part 19 that is inserted into the ground 18 and fixes the lifting device 14 to the ground 12.

[0038] In this embodiment, the main body portion 15, the fixing portion 16, and the spike portion 19 are made of metal.

[0039] Furthermore, in this embodiment, the "target work object" is, for example, a tree of a predetermined height, or a structure such as a house or wall.

[0040] Furthermore, in this embodiment, the "lifting device" is a ladder or stepladder, and comprises at least a pair of legs 33 that are placed on the ground 12 and come into contact with the work object, and a plurality of rungs 34 that are stretched between the legs 33.

[0041] The following describes the main body 15, fixing part 16, and spike part 19 that constitute the lifting device fixing device 10.

[0042] The main body 15 is formed in an elongated hollow cylindrical shape and, when fixed to the lifting device 14, has a front portion 20 that is positioned on the side opposite the lifting device 14 and on the worker side, and a rear portion 21 that is positioned on the side opposite the front portion 20 in the width direction and on the side of the lifting device 14.

[0043] The fixing part 16 is formed in a rod shape and is attached to the main body part 15 via the sliding position adjustment fixing part 22 on the back part 21.

[0044] The front portion 20 has a slit portion 23 formed along its length, and the slide position adjustment fixing portion 22 is attached to the fixing portion 16 and has a bolt portion 24 in which the shaft portion 25 is slidably positioned within the slit portion 23, and a nut portion 26 that can fix the bolt portion 24 to the main body portion 15 via the slit portion 23.

[0045] The slit portion 23 is also formed on the rear portion 21 of the main body portion 15, and the shaft portion 25 of the bolt portion 24 is formed to penetrate the main body portion 15 from the rear portion 21 to the front portion 20.

[0046] Since the slide position adjustment fixing part 22 has the above configuration, when the bolt part 24 and the nut part 26 are fastened and released, the shaft part 25 of the bolt part 24 is configured to move within the slit part 23.

[0047] Furthermore, when fastening the bolt portion 24 and the nut portion 26, the movement of the shaft portion 25 within the slit portion 23 is restricted.

[0048] The main body portion 15 is formed in the shape of an elongated rectangular parallelepiped cylinder, and the fixing portion 16 is also formed in the shape of an elongated rectangular parallelepiped cylinder having the same width dimension as the main body portion 15. The fixing portion 16 has a slide guide portion 27 that slidably holds the main body portion 15, and is fixed to the main body portion 15 in a slidable state via the slide guide portion 27.

[0049] The slide guide portion 27 is provided on the upper end portion 30 of the fixed portion 16. When viewed from the upper end portion 30 side in the axial direction of the fixed portion 16, the slide guide portion 27 is formed in a roughly U-shape.

[0050] The slide guide portion 27 provided on the fixing portion 16 is positioned to cover the bolt portion mounting surface 31 on the fixing portion 16 to which the bolt portion 24 is attached.

[0051] The inner shape formed by the inner surface of the slide guide portion 27 and the bolt portion mounting surface 31 is formed to be substantially the same as the outer shape of the main body portion 15, and is configured so that the fixing portion 16 can slide relative to the main body portion 15.

[0052] The spike portion 19 is formed in a generally U-shape and has a length greater than the width dimension of the main body portion 15. It has a horizontal beam portion 28 fixed to the main body portion 15 and a pair of piercing portions 29 provided at both ends of the horizontal beam portion 28 and projecting downward from the horizontal beam portion 28 to the main body portion 15.

[0053] The piercing portion 29 is shaped to be easily inserted into the ground 18. Specifically, the tip portion 32 of the piercing portion 29 is shaped to gradually taper towards the end.

[0054] The fixing portion 16 is provided with a clamp portion 35 that can engage and fix the main body portion 15 to the rung 34 of the lifting device 14.

[0055] The clamp portion 35 is made of metal and includes a fixed clamp member 36 attached to the fixing portion 16, a rotating clamp member 38 rotatably mounted on the fixed clamp member 36 via a hinge portion 37, and a bolt portion 39 and a nut portion 40 for fastening the rotating clamp member 38 to the fixed clamp member 36.

[0056] A cushioning material 41 is provided on the inner surface of both the fixed clamp member 36 and the rotating clamp member 38. The cushioning material 41 is made of a flexible material (for example, urethane resin) and is formed in a sheet shape.

[0057] The cushioning material 41 is formed to a thickness that allows it to contact the stepping 34, which is smaller than the inner diameter of the clamp portion 35. Because the cushioning material 41 is provided, the clamp portion 35 is configured to hold the stepping 34 well even if it is smaller than the inner diameter of the clamp portion 35.

[0058] The upper end portion 42 of the main body 15 is provided with a step portion 43 that can be stepped on by the worker to secure the spike portion 19 to the ground 18 when in use.

[0059] The step portion 43 is made of metal and is shaped to be approximately T-shaped overall when viewed from the front portion 20. The step portion 43 is provided to protrude upward from the upper end portion 42 of the main body portion 15.

[0060] The step portion 43 has a mounting portion 44 that is attached to the upper end portion 42 of the main body portion 15, and a foot contact portion 45 that is continuous with the mounting portion 44 and is the part that the worker's foot comes into contact with.

[0061] Furthermore, when fixing the spike portion 19 to the ground 18, in addition to the step portion 43, it is also possible to fix the spike portion 19 to the ground 18 by stepping on the crossbeam portion 28 of the spike portion 19 with one's foot.

[0062] Next, we will explain how to use the lifting device fixing device 10 according to this embodiment (the process of fixing the lifting device 14 to the ground 12 using the lifting device fixing device 10).

[0063] As shown in Figure 4, first, the lifting device fixing device 10 is placed between the worker and the lifting device 14, the clamp portion 35 of the fixing portion 16 is attached to the rung 34 of the lifting device 14 (for example, the rung 34 closest to the ground 12), and the main body portion 15 is engaged and fixed.

[0064] When engaging and fixing the main body portion 15, the fastening between the bolt portion 24 and the nut portion 26 of the slide position adjustment fixing portion 22 is released or released in advance.

[0065] Thereafter, the main body 15 is slid towards the ground 12 via the slide guide 27 as appropriate, so that the tip 32 of the piercing portion 29 of the spike portion 19 comes into contact with the ground 12.

[0066] Subsequently, the worker steps on the step portion 43 or the crossbeam portion 28 of the spike portion 19 with their foot to pierce and fix the spike portion 19 into the ground 18. In addition, the bolt portion 24 and nut portion 26 of the slide position adjustment fixing portion 22 are fastened together to restrict the movement of the shaft portion 25 of the bolt portion 24 within the slit portion 23.

[0067] Based on the above, the work of fixing the lifting device 14 to the ground 12 using the lifting device fixing device 10 is completed. As a result, the lower end of the lifting device 14 is Lifting device fixing device The lifting device 14 is securely fixed to the ground 12 via 10, allowing workers to safely ascend to the lifting device 14 and perform various tasks on objects such as trees.

[0068] According to this embodiment, which has the above configuration, the main body 15 is detachably attached to the lifting device 14 via the fixing part 16, the spike part 19 is inserted into the ground 18, and the lifting device 14 is fixed to the ground 12.

[0069] As a result, with the spike portion 19 protruding from the lower end portion 17 of the main body portion 15, the main body portion 15 can be fixed to the lifting device 14, and while operating the lifting device 14 to stand upright, the spike portion 19 can be inserted into the ground 18, thereby fixing the lifting device 14 to the ground 12.

[0070] According to this embodiment, the lifting device fixing device 10 is not a device that constitutes a lifting device 14 such as a "ladder" as in the conventional technology, and therefore it has the following effects.

[0071] In other words, during work, it can be attached and detachably fixed to climbing devices 14 such as ladders that are currently widely used, eliminating the need to purchase and prepare a separate ladder with spikes.

[0072] Furthermore, since it is configured as a detachable fixing device for a ladder and is not a ladder itself, it is smaller than conventional ladders, and does not require a vehicle or other means of transport during delivery. Therefore, it is a lifting device fixing device with excellent portability and transportability.

[0073] Furthermore, because it has fewer components and a simpler structure than the conventional ladder described above, it is possible to further reduce manufacturing costs and also reduce labor costs for workers.

[0074] Furthermore, according to this embodiment, since the fixing part 16 is attached to the main body part 15 via the slide position adjustment fixing part 22, it is possible to adjust and fix the position of the main body part 15 after sliding it along the longitudinal direction.

[0075] As a result, with the spike portion 19 protruding from the lower end portion 17 of the main body portion 15 by a desired amount, the main body portion 15 can be fixed to the lifting device 14, and while operating the lifting device 14 to stand upright, the spike portion 19 can be inserted into the ground 18 and the lifting device 14 can be fixed to the ground 12.

[0076] Furthermore, according to this embodiment, the bolt portion 24 and the nut portion 26 make it possible to adjust and fix the position of the fixing portion 16 which slides along the length direction of the main body portion 15.

[0077] As a result, with the spike portion 19 protruding from the lower end portion 17 of the main body portion 15, the main body portion 15 is fixed to the lifting device 14, the lifting device 14 is operated to be positioned upright while leaning it against the work object, and then the spike portion 19 is inserted into the ground 18 and the lifting device 14 is fixed to the ground 12.

[0078] Furthermore, according to this embodiment, the fixing portion 16 is fixed to the main body portion 15 in a slidable state via the slide guide portion 27.

[0079] As a result, it becomes possible to fix the lifting device 14 to the ground 12 by operating it to stand upright and inserting the piercing portion 29 of the spike portion 19 into the ground 18.

[0080] Furthermore, according to this embodiment, the main body 15 can be engaged and fixed to the rung 34 of the lifting device 14 via the clamp portion 35.

[0081] As a result, the attachment of the lifting device fixing device 10 to the lifting device 14, and the removal of the lifting device fixing device 10 after the completion of work, can be performed by engaging and disengaging the clamp portion 35 with the rung 34.

[0082] Furthermore, according to this embodiment, when a worker steps on the step portion 43 provided on the upper end portion 42 of the main body portion 15 with their foot, the piercing portion 29 of the spike portion 19 is inserted into the ground 18, and the lifting device 14 is fixed to the ground 12.

[0083] As a result, it becomes possible to fix the lifting device 14 to the ground 12 by operating it to stand upright and inserting the piercing portion 29 of the spike portion 19 into the ground 18.

[0084] Based on the above, this embodiment provides the effect of being able to be attached to and detachably fixed to climbing equipment 14 such as ladders, which are currently widely distributed and commonly used, when necessary, securely fixing the climbing equipment 14 to the ground 12, and enabling safe work at a height position separated from the ground 12.

[0085] The configuration described in the above embodiments can be modified as appropriate within the scope of the present invention, and the invention is not limited to the configuration of the above embodiments. [Explanation of Symbols]

[0086] 10… Lifting equipment fixing device 11, 17...lower end 12...ground 14… Lifting equipment 15...Main body 16...Fixed part 18...underground 19…Spike Club 20…Front view 21...Back part 22...Slide position adjustment fixing part 23... Slit section 24, 39... Bolt section 25... Shaft 26, 40... Nut section 27…Slide guide section 28…Horizontal beam part 29…Thrusting part 30, 42...Top end 31…Bolt mounting surface 32...Tip 33…legs 34... Footrail 35... Clamp part 36…Fixing clamp member 37...Hinge section 38... Rotating clamp member 39... Bolt section 40... Nut part 41…Cushioning material 43...Step section 44…Mounting part 45...Foot contact part

Claims

1. A lifting device fixing device is used to fix a lifting device to the ground, the lower end of which is placed on the ground and the upper end which abuts against a predetermined height position of a work object erected on the ground, for the purpose of allowing a worker to ascend and descend to the work object. The main body is formed in a rod shape, It has a fixing part that is slidably mounted along the length of the main body and can be detachably attached to the lifting device, The lower end of the main body has a spike portion that is inserted into the ground and fixes the lifting device to the ground. The spike portion is formed to have a length greater than the width of the main body portion, and is characterized by having a crossbeam portion fixed to the main body portion and piercing portions provided at both ends of the crossbeam portion that protrude downward from the crossbeam portion to the main body portion.

2. The main body is formed in an elongated hollow cylindrical shape and, when fixed to the lifting device, has a front portion that is positioned on the side opposite the lifting device and on the worker's side, and a rear portion that is positioned on the side opposite the front portion in the width direction and on the lifting device side. The lifting device fixing device according to claim 1, characterized in that the fixing part is formed in the shape of a rod and attached to the main body via a sliding position adjustment fixing part on the back surface.

3. A slit is formed along the length direction in the aforementioned front portion. The aforementioned slide position adjustment and fixing part is The lifting device fixing device according to claim 2, characterized in that it has a bolt portion attached to the fixing portion and in which the shaft portion is slidably arranged within the slit portion, and a nut portion that can fix the bolt portion to the main body portion via the slit portion.

4. The main body is formed in the shape of an elongated rectangular parallelepiped, and the fixing part is formed in the shape of an elongated rectangular parallelepiped having the same width dimension as the main body. The lifting device fixing device according to claim 3, characterized in that the fixing part has a slide guide part that slidably holds the main body part, and is fixed to the main body part in a slidable state via the slide guide part.

5. The lifting device fixing device according to Claim 1, characterized in that the fixing portion is provided with a clamp portion that can engage and fix the main body portion to the rung of the lifting device.

6. The lifting device fixing device according to claim 1, characterized in that the upper end of the main body is provided with a step portion that can be stepped on by a worker with their foot in order to pierce and fix the spike portion into the ground when in use.

Images