Construction signboard capable of being remotely controlled

Abstract

A construction signboard capable of being remotely controlled comprises a base, supporting legs, a movable supporting mechanism, a folding storage mechanism, a mounting frame, a positioning mechanism, a warning board and a signal receiver, a storage battery and a controller are arranged in the base, and the signal receiver is electrically connected with the controller; the movable supporting mechanism and the folding storage mechanism are both electrically connected with the storage battery and the controller. The folding storage mechanism comprises a first connecting lug plate, a first sliding block, a second connecting lug plate, a supporting rod and a third connecting lug plate, the first connecting block is hinged to the first connecting lug plate, one end of the supporting rod is hinged to the second connecting lug plate, and the other end of the supporting rod is hinged to the third connecting lug plate. The first connecting block and the supporting rod are arranged, the mounting frame is rotationally connected with the base through matched use of the first connecting block and the first connecting lug plate, and the supporting rod is matched with the second connecting lug plate and the third connecting lug plate to fold and store the mounting frame, so that the device is convenient to store and place, and the occupied placing space is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of signboard, more specifically, a kind of construction signboard of remote control more particularly. BACKGROUND

[0002] During road repair, repair personnel usually place construction signboard at repair site, remind people that front is construction site, enhance people's vigilance, prevent safety hazard, and most of the current construction signboard is just a board, and the bottom of the board is provided with supporting legs, but it is very laborious when moving, and when fixing the construction signboard, the stone is usually used to press on the supporting leg, and the loose stone cannot be fixed well, and the construction signboard is easy to shake, and the signboard needs to be moved, the stone needs to be removed and placed in the appropriate position, which is time-consuming and laborious, therefore, a road traffic construction signboard is needed.

[0003] The patent with the authorized announcement number CN218729628U discloses a movable construction sign, which comprises a base, a moving structure is arranged at the bottom end of the base, the moving structure comprises a threaded rod, the threaded rod is arranged inside one side of the base, a handle is fixed at the top end of the threaded rod, a fixing disc is arranged at the bottom end of the threaded rod, and a warning structure is arranged at the top end of the plate body. This patent is provided with a moving structure, universal wheels are symmetrically installed at the bottom end of the base, so that the base can be moved, the supporting rod and the plate body fixed at the top end of the base can follow the movement, the inside of the base is provided with internal threads, which are matched with the external threads of the threaded rod, the handle is gripped and rotated, so that the threaded rod at the bottom end of the handle rotates downward in the inside of the base, the fixing disc can be placed on the ground, and the base is limited and fixed. The effect is achieved that the plate body can be displaced, and the plate body can also be fixed on the ground to avoid the movement of the plate body at the specified position, but this patent is not convenient for storage after use, thereby occupying storage space, and it is not convenient for the reasonable application of space by workers. UTILITY MODEL CONTENT

[0004] The utility model overcomes the problem of inconvenient storage and occupies storage space, and aims to provide a construction signboard that can be remotely controlled.

[0005] The construction sign can be remotely controlled, and comprises a base, legs, a moving support mechanism, a folding storage mechanism, a mounting frame, a positioning mechanism, a warning sign and a signal receiver, the two legs are fixedly arranged at the front ends of the side walls of the base, the moving support mechanism is arranged on the base and the legs, the folding storage mechanism is arranged between the base and the mounting frame, the positioning mechanism is arranged on the mounting frame, the warning sign is arranged on the mounting frame and fixed in position between the mounting frame and the positioning mechanism, the signal receiver is fixedly arranged on the base, the base is internally provided with a battery and a controller, the battery is electrically connected with the controller, the signal receiver is electrically connected with the controller, and the moving support mechanism and the folding storage mechanism are electrically connected with the battery and the controller;

[0006] The folding storage mechanism comprises a first connecting lug, a first sliding block, a second connecting lug, a support rod and a third connecting lug, the first connecting lug is fixedly arranged on the top surface of the base, the mounting frame is fixedly provided with a first connecting block at the bottom end, the first connecting block is hingedly connected with the first connecting lug, the top surface of the base is provided with a first sliding groove, the first sliding block is inserted into the first sliding groove and slides along the first sliding groove, the second connecting lug is fixedly arranged on the top end of the first sliding block, one end of the support rod is hingedly connected with the second connecting lug, and the third connecting lug is fixedly arranged on the side wall of the mounting frame, and the other end of the support rod is hingedly connected with the third connecting lug.

[0007] Further, the folding storage mechanism further comprises a first threaded rod, the first threaded rod is inserted into the first sliding groove and rotationally connected with the base, and the first sliding block is sleeved on the first threaded rod and slides along the first sliding groove through the first threaded rod.

[0008] Further, the first threaded rod is inserted into the first recess and fixedly provided with a first motor for rotating the first threaded rod, and the first motor is electrically connected with the battery and the controller.

[0009] Further, the moving support mechanism comprises a second connecting block, a connecting shaft, first moving wheels, second moving wheels, a second sliding block, a connecting rod and a support seat, the second connecting block is fixedly arranged on one side of the bottom surface of the base, the connecting shaft penetrates through the second connecting block and is rotationally connected with the second connecting block, the two first moving wheels are fixedly arranged at the two ends of the connecting shaft, the second moving wheels are fixedly arranged at the bottom ends of the legs, the legs are provided with second sliding grooves, the second sliding block is inserted into the second sliding groove and slides along the second sliding groove, the second sliding block penetrates through the side walls of the legs at the two ends and is fixedly connected with the two connecting rods, and the support seat is fixedly arranged at the bottom ends of the two connecting rods.

[0010] Further, the moving support mechanism further comprises a second threaded rod, the second threaded rod is inserted into the second sliding groove and rotationally connected with the leg, and the second sliding block is sleeved on the second threaded rod and slides along the second sliding groove through the second threaded rod.

[0011] Further, the inside top of the supporting leg is provided with a second groove, a second threaded rod is inserted into the second groove and a second motor for rotating the second threaded rod is fixedly arranged, and the second motor is electrically connected with the battery and the controller respectively.

[0012] Further, the inside lower side of the second connecting block is provided with a third groove, a first bevel gear is sleeved on the connecting shaft and fixedly connected with the connecting shaft, the first bevel gear is engaged with a second bevel gear, the top surface of the second bevel gear is fixedly provided with a rotating shaft, the inside upper side of the second connecting block is provided with a fourth groove, the top end of the rotating shaft is inserted into the fourth groove and a third motor for rotating the rotating shaft is fixedly arranged, and the third motor is electrically connected with the battery and the controller respectively.

[0013] Further, the positioning mechanism comprises a third sliding block and a positioning block, the mounting frame is provided with a third sliding groove, the third sliding block is inserted into the third sliding groove and slides along the third sliding groove, and the positioning block is fixedly arranged at one end of the third sliding block and in contact with the side wall of the warning sign.

[0014] Further, the positioning mechanism further comprises a third threaded rod, the third threaded rod is inserted into the third sliding groove and rotationally connected with the mounting frame, and the third sliding block is sleeved on the third threaded rod and slides along the third sliding groove through the third threaded rod.

[0015] Further, one end of the third threaded rod penetrates through the side wall of the mounting frame and is fixedly provided with a handle for rotating the third threaded rod.

[0016] Compared with the prior art, the utility model has the advantages of:

[0017] ①The construction sign provided by the utility model can be remotely controlled, the mounting frame is rotationally connected with the base through the cooperation between the first connecting block and the first connecting ear plate, the mounting frame is folded and stored through the cooperation between the supporting rod and the second connecting ear plate and the third connecting ear plate, the device is conveniently stored and placed, and the occupied space is reduced.

[0018] ②The construction sign provided by the utility model can be remotely controlled, the supporting seat is lowered and supports the device through the cooperation between the supporting leg, the second sliding block and the connecting rod, the device is prevented from deviating under the action of external force, and the stability of the device is improved.

[0019] ③The construction sign provided by the utility model can be remotely controlled, the position of the warning sign on the mounting frame is fixed through the cooperation between the positioning block and the third sliding block, the stability of the device is improved, different types of warning signs are conveniently replaced, and the applicability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present application and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation to the present application. In the drawings:

[0021] Figure 1 It is the overall structure schematic diagram of the construction signboard capable of remote control in the present application.

[0022] Figure 2 It is the specific structure schematic diagram of the folding storage mechanism in the present application.

[0023] Figure 3 It is the internal structure sectional view of the supporting leg in the present application.

[0024] Figure 4 It is the internal structure sectional view of the second connecting block in the present application.

[0025] Figure 5 It is the specific structure schematic diagram of the positioning mechanism in the present application.

[0026] In the drawings: 1, base; 2, supporting leg; 3, mounting frame; 4, warning sign; 5, signal receiver; 6, first connecting ear plate; 7, first sliding block; 8, second connecting ear plate; 9, supporting rod; 10, third connecting ear plate; 11, first sliding groove; 12, first threaded rod; 13, first recess; 14, first motor; 15, second connecting block; 16, connecting shaft; 17, first moving wheel; 18, second moving wheel; 19, second sliding block; 20, connecting rod; 21, supporting seat; 22, second sliding groove; 23, second threaded rod; 24, second recess; 25, second motor; 26, third recess; 27, first bevel gear; 28, second bevel gear; 29, fourth recess; 30, third motor; 31, third sliding block; 32, positioning block; 33, third sliding groove; 34, third threaded rod; 35, handle. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] As Figure 1As shown, a remotely controllable construction sign includes a base 1, legs 2, a movable support mechanism, a folding and storage mechanism, a mounting frame 3, a positioning mechanism, a warning sign 4, and a signal receiver 5. The two legs 2 are fixedly mounted on the front side wall of the base 1. The movable support mechanism is located on the base 1 and the legs 2. The folding and storage mechanism is located between the base 1 and the mounting frame 3. The positioning mechanism is located on the mounting frame 3. The warning sign 4 is located on the mounting frame 3 and its position is fixed to the mounting frame 3 via the positioning mechanism. The signal receiver 5 is fixedly mounted on the base 1. The base 1 contains a battery and a controller (not shown in the figure). The battery and controller are electrically connected, and the signal receiver 5 is electrically connected to the controller. The movable support... The mechanism and folding storage mechanism are electrically connected to the battery and controller. Specifically, two support legs 2 are welded to the front side wall of the base 1. A movable support mechanism is provided on the base 1 and the support legs 2. A folding storage mechanism is provided between the base 1 and the mounting frame 3. A positioning mechanism is provided on the mounting frame 3. A warning sign 4 is set on the mounting frame 3 and its position is fixed to the mounting frame 3 by the positioning mechanism. A signal receiver 5 is fixed to the base 1 by a base. The battery and controller are provided inside the base 1. The battery and controller are electrically connected. The signal receiver 5 is electrically connected to the controller. The movable support mechanism is electrically connected to the battery and controller respectively. The folding storage mechanism is electrically connected to the battery and controller respectively.

[0029] like Figure 2 As shown, the folding and storage mechanism includes a first connecting ear plate 6, a first slider 7, a second connecting ear plate 8, a support rod 9, and a third connecting ear plate 10. The first connecting ear plate 6 is fixedly mounted on the top surface of the base 1. A first connecting block is fixedly mounted on the bottom end of the mounting frame 3. The first connecting block is hinged to the first connecting ear plate 6. A first sliding groove 11 is provided on the top surface of the base 1. The first slider 7 is inserted into the first sliding groove 11 and slides along the first sliding groove 11. The second connecting ear plate 8 is fixedly mounted on the top end of the first slider 7. One end of the support rod 9 is hinged to the second connecting ear plate 8. The third connecting ear plate 10 is fixedly mounted on the side wall of the mounting frame 3. The other end of the support rod 9 is hinged to the third connecting ear plate 10. Specifically, the bottom... A first connecting ear plate 6 is welded to the top surface of the base 1, and a pin is inserted into the first connecting ear plate 6. A first connecting block is welded to the bottom end of the mounting frame 3, and the first connecting block is hinged to the first connecting ear plate 6 by a pin. A first sliding groove 11 is opened on the top surface of the base 1. A first sliding block 7 is inserted into the first sliding groove 11 and slides along the first sliding groove 11. A second connecting ear plate 8 is welded to the top of the first sliding block 7, and a pin is inserted into the second connecting ear plate 8. One end of the support rod 9 is hinged to the second connecting ear plate 8 by a pin. A third connecting ear plate 10 is welded to the side wall of the mounting frame 3, and a pin is inserted into the third connecting ear plate 10. The other end of the support rod 9 is hinged to the third connecting ear plate 10 by a pin.

[0030] In the utility model, through setting up first connecting block and support rod 9, mounting frame 3 is rotatably connected with base 1 through cooperation between first connecting block and first connecting lug plate 6, support rod 9 is used in cooperation with second connecting lug plate 8 and third connecting lug plate 10 to fold and store mounting frame 3, which is convenient for storing the device, reduces the occupied storage space.

[0031] The folding storage mechanism further comprises a first threaded rod 12, the first threaded rod 12 is inserted into the first sliding groove 11 and rotatably connected with the base 1, the first sliding block 7 is sleeved on the first threaded rod 12 and slides along the first sliding groove 11 through the first threaded rod 12, specifically, the first threaded rod 12 is inserted into the first sliding groove 11 and rotatably connected with the base 1, a through hole is formed in the first sliding block 7, and the first sliding block 7 is sleeved on the first threaded rod 12 through the through hole and slides along the first sliding groove 11 through the first threaded rod 12.

[0032] The base 1 is internally provided with a first recess 13, one end of the first threaded rod 12 is inserted into the first recess 13 and fixedly provided with a first motor 14 for rotating the first threaded rod 12, preferably, the first motor 14 has a self-locking function, the first motor 14 is electrically connected with the battery and the controller respectively, and specifically, the base 1 is internally provided with the first recess 13, the first motor 14 is fixed in the first recess 13 through a motor base, one end of the first threaded rod 12 is inserted into the first recess 13 and welded with an output shaft of the first motor 14, and the first motor 14 is electrically connected with the battery and the controller respectively.

[0033] As Figure 3 , Figure 4As shown, the mobile support mechanism comprises a second connecting block 15, a connecting shaft 16, two first mobile wheels 17, a second mobile wheel 18, a second sliding block 19, two connecting rods 20 and a support seat 21, the second connecting block 15 is fixedly arranged on one side of the bottom surface of the base 1, the connecting shaft 16 penetrates through the second connecting block 15 and is rotationally connected with the second connecting block 15, the two first mobile wheels 17 are fixedly arranged at the two ends of the connecting shaft 16 respectively, the second mobile wheel 18 is fixedly arranged at the bottom end of the supporting leg 2, the supporting leg 2 is provided with a second sliding groove 22, the second sliding block 19 is inserted into the second sliding groove 22 and slides along the second sliding groove 22, the two ends of the second sliding block 19 penetrate through the side wall of the supporting leg 2 and are fixedly connected with the two connecting rods 20, and the support seat 21 is fixedly arranged at the bottom end of the two connecting rods 20.

[0034] In the utility model, through setting up the support seat 21, the supporting leg 2, the second sliding block 19 and the connecting rod 20 are used in cooperation to lower the support seat 21 and support the device, which prevents the device from deviating under external force and improves the stability of the device.

[0035] The mobile support mechanism further comprises a second threaded rod 23, the second threaded rod 23 is inserted into the second sliding groove 22 and rotationally connected with the supporting leg 2, the second sliding block 19 is sleeved on the second threaded rod 23 and slides along the second sliding groove 22 through the second threaded rod 23, and specifically, the second threaded rod 23 is inserted into the second sliding groove 22 and rotationally connected with the supporting leg 2, the second sliding block 19 is provided with a through hole, and the second sliding block 19 is sleeved on the second threaded rod 23 through the through hole and slides along the second sliding groove 22 through the second threaded rod 23.

[0036] The second threaded rod 23 is inserted into the second recess 24 at the top end of the supporting leg 2 and is fixedly provided with a second motor 25 for rotating the second threaded rod 23, preferably, the second motor 25 has a self-locking function, and the second motor 25 is electrically connected with the storage battery and the controller respectively, and specifically, the second recess 24 is formed at the top end of the supporting leg 2, the second motor 25 is fixedly arranged in the second recess 24 through a motor base, the top end of the second threaded rod 23 is inserted into the second recess 24 and is welded with the output shaft of the second motor 25, and the second motor 25 is electrically connected with the storage battery and the controller respectively.

[0037] The second connecting block 15 has a third groove 26 on its lower interior side. A first bevel gear 27 is fitted onto the connecting shaft 16 and is fixedly connected to the connecting shaft 16. The first bevel gear 27 meshes with a second bevel gear 28. A rotating shaft is fixedly mounted on the top surface of the second bevel gear 28. The second connecting block 15 has a fourth groove 29 on its upper interior side. The top of the rotating shaft is inserted into the fourth groove 29 and a third motor 30 for rotating the shaft is fixedly mounted thereon. Preferably, the third motor 30 has a self-locking function. The third motor 30 is electrically connected to the battery and the controller, respectively. The second connecting block 15 has a third groove 26 on its lower interior side. A first bevel gear 27 is fitted on the connecting shaft 16 and welded to the connecting shaft 16. A second bevel gear 28 meshes with the first bevel gear 27 and a rotating shaft is welded to the top surface of the second bevel gear 28. A fourth groove 29 is provided on the upper interior side of the second connecting block 15. The third motor 30 is fixed inside the fourth groove 29 by a motor base. The top end of the rotating shaft is inserted into the fourth groove 29 and welded to the output shaft of the third motor 30. The third motor 30 is electrically connected to the battery and the controller respectively.

[0038] like Figure 5 As shown, the positioning mechanism includes a third slider 31 and a positioning block 32. A third groove 33 is provided on the mounting frame 3. The third slider 31 is inserted into the third groove 33 and slides along the third groove 33. The positioning block 32 is fixedly set at one end of the third slider 31. The positioning block 32 is in contact with the side wall of the warning sign 4. Specifically, the mounting frame 3 has a third groove 33, the third slider 31 is inserted into the third groove 33 and slides along the third groove 33, and a positioning block 32 is welded to one end of the third slider 31. The positioning block 32 is in contact with the side wall of the warning sign 4.

[0039] In this utility model, by setting a positioning block 32, which slides along the third slide groove 33 via the third slider 31, the position of the warning sign 4 on the mounting bracket 3 is fixed, thereby improving the stability of the device and facilitating the replacement of different types of warning signs 4, thus improving the applicability of the device.

[0040] The positioning mechanism also includes a third threaded rod 34, which is inserted into the third slide groove 33 and rotatably connected to the mounting bracket 3. The third slider 31 is sleeved on the third threaded rod 34 and slides along the third slide groove 33 through the third threaded rod 34. Specifically, the third threaded rod 34 is inserted into the third slide groove 33 and rotatably connected to the mounting bracket 3. The third slider 31 has a through hole, which is sleeved on the third threaded rod 34 and slides along the third slide groove 33 through the third threaded rod 34.

[0041] The third threaded rod 34 penetrates the side wall of the mounting frame 3 and is fixedly provided with a handle 35 for rotating the third threaded rod 34.

[0042] The working principle of the remote-controlled construction sign in the embodiment is as follows:

[0043] The warning sign 4 is inserted into the mounting frame 3, the handle 35 is rotated, the third threaded rod 34 is rotated with the handle 35, the third sliding block 31 is rotated with the third threaded rod 34 and slides along the third sliding groove 33, the positioning block 32 is moved with the third sliding block 31 to contact the warning sign 4 to fix the warning sign 4, the workers move through the remote control device, the signal receiver 5 receives the signal and sends it to the controller, the controller controls the third motor 30 to rotate the output shaft, the rotating shaft is rotated with the output shaft, the second bevel gear 28 is rotated with the rotating shaft, the first bevel gear 27 is rotated with the second bevel gear 28, the connecting shaft 16 is rotated with the first bevel gear 27, the first moving wheel 17 is rotated with the connecting shaft 16, the second moving wheel 18 is rotated with the first moving wheel 17 to move the device to the designated position, the workers move through the remote control device, the signal receiver 5 receives the signal and sends it to the controller, the controller controls the second motor 25 to rotate the output shaft, the second threaded rod 23 is rotated with the output shaft, the second sliding block 19 is grabbed along the second sliding groove 22 with the second threaded rod 23, the connecting rod 20 is moved with the second sliding block 19, the support seat 21 is moved with the connecting rod 20 to contact the designated position, the workers move through the remote control device, the signal receiver 5 receives the signal and sends it to the controller, the controller controls the first motor 14 to rotate the output shaft, the first threaded rod 12 is rotated with the output shaft, the first sliding block 7 is rotated with the first threaded rod 12 and slides along the first sliding groove 11, the second connecting ear plate 8 is moved with the first sliding block 7, the support rod 9 is rotated at one end along the second connecting ear plate 8, the support rod 9 is rotated at the other end along the third connecting ear plate 10, and the mounting frame 3 is rotated through the first connecting block along the first connecting ear plate 6 to be vertical to erect the warning sign 4.

[0044] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A remotely controllable construction sign, characterized by: The device includes a base (1), legs (2), a movable support mechanism, a folding and storage mechanism, a mounting frame (3), a positioning mechanism, a warning sign (4), and a signal receiver (5). The two legs (2) are fixedly mounted on the front end of the side wall of the base (1). The movable support mechanism is mounted on the base (1) and the legs (2). The folding and storage mechanism is located between the base (1) and the mounting frame (3). The positioning mechanism is located on the mounting frame (3). The warning sign (4) is mounted on the mounting frame (3) and its position is fixed between the positioning mechanism and the mounting frame (3). The signal receiver (5) is fixedly mounted on the base (1). The base (1) contains a battery and a controller. The battery is electrically connected to the controller. The signal receiver (5) is electrically connected to the controller. The movable support mechanism and the folding and storage mechanism are both electrically connected to the battery and the controller. The folding and storage mechanism includes a first connecting ear plate (6), a first slider (7), a second connecting ear plate (8), a support rod (9), and a third connecting ear plate (10). The first connecting ear plate (6) is fixedly disposed on the top surface of the base (1). A first connecting block is fixedly disposed at the bottom end of the mounting frame (3). The first connecting block is hinged to the first connecting ear plate (6). A first sliding groove (11) is opened on the top surface of the base (1). The first slider (7) is inserted into the first sliding groove (11) and slides along the first sliding groove (11). The second connecting ear plate (8) is fixedly disposed on the top end of the first slider (7). One end of the support rod (9) is hinged to the second connecting ear plate (8). The third connecting ear plate (10) is fixedly disposed on the side wall of the mounting frame (3). The other end of the support rod (9) is hinged to the third connecting ear plate (10).

2. A construction sign according to claim 1, wherein: The folding and storage mechanism also includes a first threaded rod (12), which is inserted into the first slide groove (11) and rotatably connected to the base (1). The first slider (7) is sleeved on the first threaded rod (12) and slides along the first slide groove (11) through the first threaded rod (12).

3. A construction sign according to claim 2, wherein: The base (1) has a first groove (13) inside. One end of the first threaded rod (12) is inserted into the first groove (13) and a first motor (14) for rotating the first threaded rod (12) is fixedly installed. The first motor (14) is electrically connected to the battery and the controller respectively.

4. A construction sign according to claim 1, wherein: The movable support mechanism includes a second connecting block (15), a connecting shaft (16), a first moving wheel (17), a second moving wheel (18), a second slider (19), a connecting rod (20), and a support base (21). The second connecting block (15) is fixedly disposed on one side of the bottom surface of the base (1). The connecting shaft (16) passes through the second connecting block (15) and is rotatably connected to the second connecting block (15). The two first moving wheels (17) are respectively fixedly disposed at both ends of the connecting shaft (16). The second moving wheel (18) is fixedly disposed at the bottom end of the support leg (2). A second sliding groove (22) is provided on the support leg (2). The second slider (19) is inserted into the second sliding groove (22) and slides along the second sliding groove (22). The two ends of the second slider (19) pass through the side wall of the support leg (2) and are fixedly connected to the two connecting rods (20). The support base (21) is fixedly disposed at the bottom end of the two connecting rods (20).

5. A construction sign according to claim 4, wherein: The movable support mechanism further includes a second threaded rod (23), which is inserted into the second slide groove (22) and rotatably connected to the support leg (2). The second slider (19) is sleeved on the second threaded rod (23) and slides along the second slide groove (22) through the second threaded rod (23).

6. A construction sign according to claim 5, wherein: The support leg (2) has a second groove (24) at its top end. The top end of the second threaded rod (23) is inserted into the second groove (24) and a second motor (25) for rotating the second threaded rod (23) is fixedly installed. The second motor (25) is electrically connected to the battery and the controller respectively.

7. A construction sign according to claim 4, wherein: The second connecting block (15) has a third groove (26) on its lower side. A first bevel gear (27) is fitted on the connecting shaft (16). The first bevel gear (27) is fixedly connected to the connecting shaft (16). The first bevel gear (27) meshes with a second bevel gear (28). A rotating shaft is fixedly installed on the top surface of the second bevel gear (28). A fourth groove (29) is opened on the upper side of the second connecting block (15). The top of the rotating shaft is inserted into the fourth groove (29) and a third motor (30) for rotating the rotating shaft is fixedly installed. The third motor (30) is electrically connected to the battery and the controller respectively.

8. A construction sign according to claim 1, wherein: The positioning mechanism includes a third slider (31) and a positioning block (32). A third groove (33) is provided on the mounting bracket (3). The third slider (31) is inserted into the third groove (33) and slides along the third groove (33). The positioning block (32) is fixedly set at one end of the third slider (31). The positioning block (32) is in contact with the side wall of the warning sign (4).

9. A remotely controllable construction sign according to claim 8, characterized in that: The positioning mechanism further includes a third threaded rod (34), which is inserted into the third slide groove (33) and rotatably connected to the mounting bracket (3). The third slider (31) is sleeved on the third threaded rod (34) and slides along the third slide groove (33) through the third threaded rod (34).

10. A remotely controllable construction sign according to claim 9, characterized in that: One end of the third threaded rod (34) passes through the side wall of the mounting bracket (3) and is fixedly provided with a handle (35) for rotating the third threaded rod (34).

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