Signboard support and warning signboard for power construction

Abstract

The utility model discloses a signboard support and a warning signboard for electric power construction, and relates to the technical field of electric power tools. The H-shaped frame comprises two T-shaped sub-frames, the two sub-frames are connected in a sliding mode in the first direction and jointly form an area where the signboard body is installed, and containing grooves are formed in the lower portions of the sub-frames; the locking assembly is arranged between the two sub-frames and locks the two sub-frames. The supporting assembly and the sub-frame are correspondingly arranged, the supporting assembly comprises two supporting rods located on the two sides of the sub-frame in the second direction, one end of each supporting rod is hinged to the lower end of the sub-frame, and the end, hinged to the sub-frame, of each supporting rod is provided with a supporting step. The two supporting rods located on the two sides of the sub-frame in the second direction extend in the second direction, and the two supporting steps jointly form a limiting groove which is provided with an upward opening and used for abutting against the lower end of the sub-frame. When the supporting assembly is in the storage state, the supporting rod can be stored in the containing groove. According to the utility model, the required storage space can be reduced, and the cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, and in particular to a sign bracket and a warning sign for power construction. Background Technology

[0002] Safety warning signs are commonly used in power maintenance work to inform and remind personnel on site, thereby ensuring the safety of power maintenance work. Traditional safety warning signs consist of a support frame and a sign body. The sign body is fixedly connected to the support frame, which can be T-shaped or V-shaped, providing strong support for the sign body. With technological advancements, some safety warning signs now have a foldable structure for easier handling and transportation.

[0003] However, due to different usage scenarios and purposes, the size of safety warning signs varies, and the signs on the main body of the signs are also different, so that the safety warning signs can play an appropriate safety warning role. Therefore, it is necessary to purchase a variety of safety warning signs and store them in the power tool warehouse, which will lead to an increase in the required storage space and the cost. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a sign bracket and a warning sign for power construction, which can reduce the required storage space and lower costs.

[0005] The first aspect of this utility model provides a sign holder, which includes:

[0006] The frame is H-shaped and includes two T-shaped sub-frames that are slidably connected along a first direction and together form an area for mounting the sign body. The lower part of each sub-frame is provided with two receiving grooves arranged along a second direction.

[0007] A locking component is disposed between the two sub-shelves, the locking component being configured to lock the two sub-shelves;

[0008] The support assembly has two components, each corresponding to one of the two sub-frames. Each support assembly includes two support rods, which are located on opposite sides of the sub-frame along a second direction. One end of each support rod is hinged to the lower end of the sub-frame, and the hinged end of each support rod is provided with a support step. The support assembly has a working state and a stored state.

[0009] When the support assembly is in use, two support rods located on opposite sides of the subframe along the second direction extend along the second direction, and the support steps of the two support rods together form an upward-opening limiting groove, with the lower end of the subframe abutting the bottom surface of the limiting groove; when the support assembly is in the storage state, the support rods are configured to be stored in the receiving groove, with the first direction, the second direction, and the up-down direction being perpendicular to each other.

[0010] The sign holder according to the first aspect of this utility model has at least the following beneficial effects: Since the two sub-frames are slidably connected along the first direction, each support rod can swing upwards until it is housed in the receiving groove of the sub-frame. Therefore, the two sub-frames can move closer to each other, reducing the space occupied by the frame in the first direction. Simultaneously, the support rods being housed in the receiving groove reduces the space occupied by the support components in the second direction, resulting in a smaller sign body in the housed state, facilitating handling and storage, and reducing the space occupied by the sign body in the warehouse. Furthermore, the two sub-frames can move further apart, adjusting the size of the area in the first direction, and are fixed between the two sub-frames by locking components to accommodate sign bodies of different sizes. Therefore, the number of sign holders in the warehouse is less than the number of sign bodies, further saving storage space and reducing purchase costs.

[0011] When the sign bracket is in use, rotate all the support rods relative to the frame and make direct contact with the ground so that the support steps on the two support rods can work together to form a limiting groove, which provides support and limits the lower part of the frame, allowing the frame to maintain a stable vertical state and preventing it from tipping over.

[0012] In some embodiments of this utility model, the sign holder further includes a fixing component. Two fixing components are provided and are respectively disposed corresponding to the two sub-frames. The fixing component is disposed at the lower part of the sub-frame and is configured to fix the two support rods in the receiving groove.

[0013] In some embodiments of this utility model, the fixing component is a sliding cover, which is slidably connected to the lower part of the sub-frame in the vertical direction. The sliding cover is configured to surround the two support rods and restrict the support rods within the receiving groove.

[0014] In some embodiments of this utility model, the fixing component is a magnet, the magnet is disposed in the receiving groove, and the magnet is configured to magnetically attract the support rod.

[0015] In some embodiments of this utility model, for the two support rods located on opposite sides of the subframe along the second direction, at least one of the support rods is provided with a magnet, and when the support assembly is in use, the two support rods are magnetically connected through the magnet.

[0016] In some embodiments of this utility model, each of the sub-frames includes vertical bars and horizontal bars that are perpendicularly connected to each other. One of the horizontal bars is provided with a groove extending along a first direction. The opening of the groove is open upwards. The groove passes through one side of the horizontal bar along the first direction. The other horizontal bar extends into the groove and is slidably connected to the wall of the groove. The upper surfaces of the two horizontal bars are flush.

[0017] In some embodiments of this utility model, the locking component is a tightening bolt, one of the crossbars is provided with a connecting screw hole, the connecting screw hole communicates with the slide groove, the tightening bolt is threadedly connected to the connecting screw hole, and the tightening bolt is configured to apply a tightening action to the other crossbar.

[0018] In some embodiments of this utility model, the vertical rod is provided with a positioning groove extending in the vertical direction on one side along the first direction. The opening of the positioning groove is open towards the area. The positioning groove passes through the upper end of the vertical rod. The positioning groove is configured to allow the sign body to be inserted from top to bottom.

[0019] In some embodiments of this utility model, the support rod is connected to the lower end of the sub-frame via a hinge.

[0020] A second aspect of this utility model provides a warning sign for power construction, which includes:

[0021] Signage bracket as described in any of the embodiments of the first aspect;

[0022] The main body of the sign is located within the area of ​​the sign support.

[0023] The power construction warning sign according to the second aspect of the present invention has at least the following beneficial effects: the power construction warning sign uses the sign bracket with the above-described structure to match various sign bodies, which can reduce purchase costs and required storage space.

[0024] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention may be realized and obtained by means of the structures particularly pointed out in the description, claims, and drawings. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the sign holder in its unfolded state according to an embodiment of the present utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of the sign holder in its stowed state according to an embodiment of the present utility model;

[0027] Figure 3 This is a side view of the sign holder in its unfolded state according to an embodiment of the present utility model;

[0028] Figure 4 This is a three-dimensional structural diagram of a warning sign for power construction provided according to an embodiment of the present utility model.

[0029] Reference numerals: 110, subframe; 111, vertical bar; 112, horizontal bar; 120, positioning groove; 130, tightening bolt; 140, receiving groove; 200, support assembly; 210, support rod; 211, support step; 300, sign body; 400, sliding cover. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that features specified as "first" or "second" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The following is for reference. Figures 1 to 4 This invention describes a sign bracket and a warning sign for power construction provided according to embodiments of the present invention.

[0034] like Figures 1 to 3As shown, the sign holder according to the first aspect of the present invention can be used in conjunction with the sign body 300, which can reduce the required storage space and reduce costs.

[0035] The sign holder has a first direction, a second direction, and a vertical direction, wherein the first direction, the second direction, and the vertical direction are perpendicular to each other. In this embodiment, it is assumed that the first direction is the left-right direction and the second direction is the front-back direction.

[0036] The sign holder structure includes a frame, a locking component, and a support component 200.

[0037] Viewed along the first direction, the frame is H-shaped overall. Specifically, the frame includes two sub-frames 110, each of which is T-shaped when viewed along the first direction. The two sub-frames 110 are slidably connected along the first direction, allowing them to move closer or further apart. Together, the two sub-frames 110 form an area for mounting the sign body 300, which can be installed from top to bottom within this area, thus securing the sign body 300 relative to the frame. It is understood that the sign body 300 can be fixed to the frame by adhesive, screws, or magnetic attachment. Warning labels are attached to the front and / or rear of the sign body 300.

[0038] A locking assembly is disposed between the two supports and configured to lock the two sub-frames 110, preventing relative sliding of the two sub-frames 110 after the area's dimensions are adjusted. When the locking is released, the two sub-frames 110 can move along a first direction to adjust the size of the area in that direction.

[0039] Specifically, each sub-frame 110 includes a vertical rod 111 and a horizontal rod 112. The vertical rod 111 extends vertically, and the horizontal rod 112 extends horizontally in a first direction. The vertical rod 111 and the horizontal rod 112 can be perpendicularly connected to each other by screws or welding. One end of the horizontal rod 112 is fixedly connected to the vertical rod 111. The horizontal rod 112 and the vertical rod 111 can be hollow structures. The horizontal rod 112 and the vertical rod 111 can be made of metal such as iron. The cross-sectional shape of the horizontal rod 112 and the vertical rod 111 is square.

[0040] In the entire frame, two horizontal bars 112 are located between two vertical bars 111, and the two horizontal bars 112 are slidably connected. Specifically, one of the horizontal bars 112 is provided with a groove that extends along a first direction, with the groove opening upwards. The groove extends through one side of the horizontal bar 112 along the first direction to form an opening structure located on the side of the horizontal bar 112 away from the vertical bars 111. The groove has a square cross-sectional shape, adapted to the shape of the other horizontal bar 112. The other horizontal bar 112 can extend into the groove and slide against the wall of the groove. Furthermore, the upper surfaces of the two horizontal bars 112 are flush, so when the sign body 300 is placed in the area, the lower surface of the sign body 300 will contact the upper surface of one of the horizontal bars 112.

[0041] In some embodiments, the locking component is a tightening bolt 130, one end of which has a threaded portion and the other end has a handle. One of the crossbars 112 has a connecting screw hole, the central axis of which extends along a second direction and communicates with a slide groove. The tightening bolt 130 is threadedly connected to the connecting screw hole, and the tightening bolt 130 is configured to apply a tightening action to the other crossbar 112.

[0042] It is understood that the connecting screw hole and the tightening bolt 130 can be located on the front or rear side of the crossbar 112. In this embodiment, the connecting screw hole and the tightening bolt 130 are located at the end of one of the crossbars 112 away from the vertical bar 111 to which it is connected. With this design, when the two crossbars 112 move relative to each other in the first direction to either position, the connecting screw hole can be tightened by the tightening bolt 130, and the bolt will tightly abut against the surface of the crossbar 112 in the groove, so that the two crossbars 112 are relatively fixed.

[0043] In other embodiments, the locking component is an existing pop-out post, wherein one crossbar 112 is provided with a locking hole that communicates with a slide groove. The number of locking holes is not limited to one; if multiple locking holes are provided, they are spaced apart along a first direction. The other crossbar 112 is provided with a pop-out post. When the pop-out post on the crossbar 112 moves to one of the locking holes, the pop-out post will pop out from the locking hole, causing the two crossbars 112 to engage and remain in a relatively fixed state.

[0044] Each sub-frame 110 has two receiving grooves 140 at its lower part, arranged along a second direction, located on opposite sides of the sub-frame 110 along the second direction. In this embodiment, the receiving groove 140 located on the front side of the sub-frame 110 opens forward, and the receiving groove 140 located on the rear side of the sub-frame 110 opens rearward. Each receiving groove 140 penetrates the lower end of the vertical rod 111. Alternatively, the receiving groove 140 may also penetrate one or both sides of the vertical rod 111 in the left-right direction. The shape of the receiving groove 140 is not limited.

[0045] Two support components 200 are provided, and each support component 200 is respectively provided with one of the two sub-frames 110. Each sub-frame 110 has a support component 200 at its bottom. Each support component 200 includes two support rods 210, which are located on opposite sides of the sub-frame 110 along a second direction. One end of each support rod 210 is hinged to the lower end of the sub-frame 110. Specifically, the support rod 210 is connected to the lower end of the sub-frame 110 via a hinge. The hinge axis between the support rod 210 and the sub-frame 110 extends along a first direction. The support rod 210 can swing upwards relative to the sub-frame 110 around the hinge axis to a vertical state, or swing downwards relative to the sub-frame 110 around the hinge axis to a horizontal state. Therefore, the support component 200 has a usage state and a storage state. Furthermore, the end of the support rod 210 that is hinged to the sub-frame 110 is provided with a support step 211.

[0046] Understandably, the support rod 210 can be a solid structure. The lower part of the vertical rod 111 can also be a solid structure, allowing the center of gravity of the vertical rod 111 to shift downwards. The left and right dimensions of the support rod 210 can be less than or equal to the left and right dimensions of the vertical rod 111.

[0047] like Figure 1 and Figure 3 As shown, when the support assembly 200 is in use, the two support rods 210 located on opposite sides of the subframe 110 along the second direction extend along the second direction. That is, the two support rods 210 have rotated from a vertical state to a horizontal state and can directly contact the ground. Moreover, the support steps 211 of these two support rods 210 are arranged opposite each other along the second direction and together form a limiting groove. The opening of the limiting groove is open upwards, so the lower end of the subframe 110 can abut against the bottom surface of the limiting groove. It can be understood that the lower end surface of the vertical rod 111 is flat and can fit against the bottom surface of the limiting groove. Furthermore, the front and rear sides of the vertical rod 111 are respectively in contact with the side wall surface of the limiting groove, so that the vertical rod 111 can be limited in the front-rear direction, allowing the vertical rod 111 to maintain a stable vertical state.

[0048] like Figure 2As shown, when the support assembly 200 is in the retracted state, the support rods 210 are configured to be stored within the receiving grooves 140. It is understood that during handling or storage, each support rod 210 is rotated upwards until it is located within the receiving grooves 140, thereby reducing the space occupied by the support assembly 200.

[0049] In some embodiments, the sign holder structure further includes fixing components. Two fixing components are provided, each corresponding to one of the two sub-frames 110. The fixing components are located at the lower part of the sub-frames 110 and are configured to secure the two support rods 210 within the receiving grooves 140. It is understood that when the support rods 210 swing into the receiving grooves 140, the fixing components secure the support rods 210, preventing them from swinging downwards. Therefore, during handling, the swinging motion of the support rods 210 can be prevented from injuring surrounding personnel or equipment.

[0050] In a specific embodiment, Figure 2 As shown, the fixing component is a sliding cover 400, which is slidably connected to the lower part of the sub-frame 110 in the vertical direction. The sliding cover 400 can slide up and down relative to the vertical rod 111. Moreover, the sliding cover 400 is configured to surround the two support rods 210 and confine the support rods 210 within the receiving groove 140.

[0051] Understandably, the sliding cover 400 can be annular and contact the outer circumferential surface of the vertical rod 111. When the two support rods 210 are rotated upwards to the receiving groove 140, the support rods 210 are flush with the surface of the vertical rod 111. Then, the sliding cover 400 is slid downwards to the appropriate position, so that the two support rods 210 remain vertical under the limiting action of the sliding cover 400. To prevent the sliding cover 400 from falling downwards, a limiting part can be provided on the surface of the vertical rod 111, which can limit the lowest position of the sliding cover 400. After the sliding cover 400 is moved upwards to the appropriate position, force can be applied to the support rods 210, causing the support rods 210 to swing downwards to a horizontal state.

[0052] Of course, it is possible that the sliding cover 400 is U-shaped and is connected to the vertical rod 111 by a latch, allowing the sliding cover 400 to move up and down along the vertical rod 111 without detaching from it. The sliding cover 400 may be made of plastic.

[0053] In another specific embodiment, the fixing component is a magnet, which is disposed within the receiving groove 140 and configured to magnetically attract the support rod 210. It is understood that with a magnet disposed within each receiving groove 140, if the support rod 210 is made of iron, the magnet can magnetically attract the support rod 210, ensuring that the support rod 210 always remains in a stable vertical state; of course, the support rod 210 may also be provided with an iron plate for magnetic connection with the magnet.

[0054] Of course, it is possible that the magnet is a bar magnet. The length of the bar magnet extends along the second direction. The vertical rod 111 is provided with a mounting cavity, which is connected to two receiving grooves 140 respectively. The bar magnet is placed in the mounting cavity. One end of the bar magnet can magnetically attract one of the support rods 210, and the other end of the bar magnet can magnetically attract the other support rod 210.

[0055] Furthermore, it is not excluded that in other embodiments, the fixing component uses locking bolts to fix the support rod 210 to the vertical rod 111, so that the support rod 210 is located in the receiving groove 140.

[0056] In some embodiments, for the two support rods 210 located on opposite sides of the subframe 110 along the second direction, at least one support rod 210 is provided with a magnet, which can be a bar magnet. When the support assembly 200 is in use, both support rods 210 are horizontally arranged and magnetically connected by the magnet, so that the two support rods 210 maintain a stable horizontal state under the magnetic attraction force, which can provide strong support for the vertical rod 111, thereby improving the stability of the sign holder.

[0057] In some embodiments, such as Figure 1 and Figure 2 As shown, the vertical rod 111 has a positioning groove 120 on one side along the first direction. The length of the positioning groove 120 extends in the vertical direction, and the opening of the positioning groove 120 faces the area. The positioning groove 120 passes through the upper end of the vertical rod 111 to form an opening structure. Moreover, the positioning groove 120 is configured to allow the sign body 300 to be inserted from top to bottom.

[0058] Understandably, the sign body 300 can be inserted from top to bottom into the positioning groove 120 on the vertical bar 111 until the sign body 300 moves downward and abuts against the upper surface of the horizontal bar 112. The positioning groove 120 can limit the sign body 300 in a first direction, allowing the sign body 300 to be fixed relative to the frame. This facilitates the assembly and disassembly of the sign body 300, and also allows the frame to adapt to the installation of sign bodies 300 with different upper and lower dimensions, thereby increasing the versatility of the sign bracket.

[0059] Furthermore, a positioning groove 120 is also provided on the upper surface of one of the crossbars 112. The opening of the positioning groove 120 faces upward and extends along the first direction. The lower end of the sign body 300 can be inserted into the positioning groove 120 on the crossbar 112.

[0060] In the sign holder provided in the first aspect embodiment of this utility model, since the two sub-frames 110 are slidably connected along the first direction, each support rod 210 can swing upwards to be stored in the receiving groove 140 of the sub-frame 110. Therefore, the two sub-frames 110 can move closer to each other to reduce the space occupied by the frame in the first direction. At the same time, each support rod 210 can be stored in the receiving groove 140 to reduce the space occupied by the support assembly 200 in the second direction. This makes the sign body 300 smaller in size when stored, which is convenient for workers to carry and store, and can reduce the space occupied by the sign body 300 in the warehouse.

[0061] Furthermore, the two sub-frames 110 can be moved away from each other to adjust the size of the area in the first direction, and the two sub-frames 110 can be fixed together by locking components to better accommodate the installation of sign bodies 300 of different sizes. Therefore, the number of sign brackets in the warehouse can be less than the number of sign bodies 300, that is, one sign bracket can be used with multiple sign bodies 300, thereby further saving the storage space provided by the warehouse and reducing the purchase cost.

[0062] When the sign holder switches from the storage state to the use state, all the support rods 210 are rotated relative to the frame and put into direct contact with the ground, so that the support steps 211 on the two support rods 210 can form a limiting groove together to provide support and limit the lower part of the frame, so that the frame can maintain a stable vertical state and is not prone to tipping over.

[0063] like Figures 1 to 4 As shown, the power construction warning sign according to the second aspect embodiment of the present invention includes a sign body 300 and a sign bracket as described in the first aspect embodiment. The sign body 300 is square-shaped and is located within the area of ​​the sign bracket.

[0064] Understandably, by sliding the two sub-frames 110 relative to each other and by using the locking mechanism, the area of ​​the sign holder can be adapted to different sizes of sign bodies 300. Therefore, it is not necessary to equip each sign body 300 with a sign holder, thus reducing purchase costs and storage space requirements.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0066] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sign holder, characterized in that, include: The frame is H-shaped and includes two T-shaped sub-frames that are slidably connected along a first direction and together form an area for mounting the sign body. The lower part of each sub-frame is provided with two receiving grooves arranged along a second direction. A locking component is disposed between the two sub-shelves, the locking component being configured to lock the two sub-shelves; The support assembly has two components, each corresponding to one of the two sub-frames. Each support assembly includes two support rods, which are located on opposite sides of the sub-frame along a second direction. One end of each support rod is hinged to the lower end of the sub-frame, and the hinged end of each support rod is provided with a support step. The support assembly has a working state and a stored state. When the support assembly is in use, two support rods located on opposite sides of the subframe along the second direction extend along the second direction, and the support steps of the two support rods together form an upward-opening limiting groove, with the lower end of the subframe abutting the bottom surface of the limiting groove; when the support assembly is in the storage state, the support rods are configured to be stored in the receiving groove, with the first direction, the second direction, and the up-down direction being perpendicular to each other.

2. The sign holder according to claim 1, characterized in that, It also includes a fixing component, of which two fixing components are provided and respectively corresponding to the two sub-frames. The fixing components are located at the lower part of the sub-frames and are configured to fix the two support rods in the receiving groove.

3. The sign holder according to claim 2, characterized in that, The fixing component is a sliding cover, which is slidably connected to the lower part of the sub-frame in the vertical direction. The sliding cover is configured to surround the two support rods and confine the support rods within the receiving groove.

4. The sign holder according to claim 2, characterized in that, The fixing component is a magnet, which is disposed in the receiving groove and is configured to magnetically attract the support rod.

5. The sign holder according to claim 1, characterized in that, For the two support rods located on opposite sides of the subframe along the second direction, at least one of the support rods is provided with a magnet, and the two support rods are magnetically connected through the magnet when the support assembly is in use.

6. The sign holder according to claim 1, characterized in that, Each of the sub-frames includes vertical and horizontal bars connected perpendicularly to each other. One of the horizontal bars has a groove extending along a first direction with its opening facing upward. The groove passes through one side of the horizontal bar along the first direction. The other horizontal bar extends into the groove and is slidably connected to the wall of the groove. The upper surfaces of the two horizontal bars are flush.

7. The sign holder according to claim 6, characterized in that, The locking assembly is a tightening bolt, one of the crossbars is provided with a connecting screw hole, the connecting screw hole communicates with the slide groove, the tightening bolt is threadedly connected to the connecting screw hole, and the tightening bolt is configured to apply a tightening action to the other crossbar.

8. The sign holder according to claim 6, characterized in that, The vertical rod has a positioning groove extending vertically on one side along the first direction. The opening of the positioning groove faces the area. The positioning groove passes through the upper end of the vertical rod and is configured to allow the sign body to be inserted from top to bottom.

9. The sign holder according to claim 1, characterized in that, The support rod is connected to the lower end of the sub-frame via a hinge.

10. A warning sign for power construction, characterized in that, It includes: The sign holder as described in any one of claims 1 to 9; The main body of the sign is located within the area of ​​the sign support.

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