Protective fence device for crane

Abstract

The utility model relates to the technical field of protective fences, and discloses a protective fence device for a crane, which comprises a connecting mechanism and an expansion cabinet, the expansion cabinet is movably connected to the top of the connecting mechanism, the expansion cabinet comprises a rolling unit and a butt joint unit, the rolling unit is rotatably connected to the top of the connecting mechanism, and the butt joint unit is connected to the top of the connecting mechanism. The butt joint unit is movably connected to the interior of the winding unit. The protective guard device for the crane can be flexibly adjusted and change the posture to achieve a stable mounting state when facing a bumpy ground, and the protective guard device can be stably mounted no matter the ground of a construction site is not flat enough or the position of the crane has a certain gradient and other complex terrain conditions, so that the safety of the crane is ensured. The winding shaft in the winding unit is rotationally connected to the interior of the winding box and the interior of the sleeve, a user can easily control the winding shaft to wind the isolation pull rope only by rotating a rotary knob, and complex tools are not needed or too much manpower is not consumed.

Description

Technical Field

[0001] This utility model relates to the field of guardrail technology, specifically a guardrail device for cranes. Background Technology

[0002] When cranes are in operation, safety railings are usually installed around them for four reasons: first, to ensure personnel safety and prevent people from falling or being injured by moving parts; second, to prevent objects from falling and injuring people, and to prevent the accidental falling of hoisted items and crane parts; third, to regulate the work area and facilitate on-site management and safety supervision; and fourth, to isolate unrelated personnel from entering the dangerous area, thus achieving a warning effect.

[0003] However, the existing technology still has the following shortcomings. Existing guardrails are usually assembled by splicing isolation plates. When using them, they need to be installed and spliced. However, the existing guardrails are relatively large. During installation, it usually requires two to three people, which is quite cumbersome. Therefore, there is a need for a guardrail device for cranes that can be installed by a single person. Utility Model Content

[0004] The purpose of this utility model is to provide a protective railing device for cranes to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a guardrail device for cranes, comprising a connecting mechanism and an expansion cabinet, wherein the expansion cabinet is movably connected to the top of the connecting mechanism.

[0006] The expansion cabinet includes a winding unit and a docking unit. The winding unit is rotatably connected to the top of the connecting mechanism, and the docking unit is movably connected to the inside of the winding unit.

[0007] Preferably, the connecting mechanism consists of a mounting base plate, a fixing hole, a steering angle, a rotating shaft connecting plate, a locking bolt, and a turntable. The fixing hole is formed on the surface of the mounting base plate, the steering angle is fixedly connected to the top of the mounting base plate, the rotating shaft connecting plate is rotatably connected to the surface of the steering angle, the locking bolt is threaded into the interior of the steering angle and the rotating shaft connecting plate, and the turntable is rotatably connected to the top of the rotating shaft connecting plate, playing a major adjustment role. This allows the device to achieve a stable posture when installed on uneven ground, thereby improving installation stability.

[0008] Preferably, the winding unit comprises an adjusting sleeve, an adjusting hole, a lifting adjusting rod, a spring locking block, a sleeve, a winding box, and a winding shaft. The adjusting sleeve is fixedly connected to the top of the turntable, the adjusting hole is opened on the surface of the adjusting sleeve, the lifting adjusting rod is movably connected to the inside of the adjusting sleeve, the spring locking block is movably connected to the inside of the adjusting sleeve, the sleeve is fixedly connected to the top of the lifting adjusting rod, the winding box is fixedly connected to the surface of the sleeve, and the winding shaft is rotatably connected to the inside of the winding box and the sleeve, playing the main winding function and facilitating recycling and installation.

[0009] Preferably, the docking unit consists of a hook ring, a barrier rope, a connecting block, and a buckle. The hook ring is fixedly connected to the side of the winding box, the barrier rope is movably connected to the inside of the winding box, the connecting block is fixedly connected to one end of the barrier rope, and the buckle is fixedly connected to the side of the connecting block, playing the main connecting role and facilitating expansion installation.

[0010] Preferably, the latch is engaged inside the hanging ring, serving as the main extension connection. By engaging the latch with the surface of the hanging ring of another device, the isolation pull rope is pulled up to achieve the function of isolation and warning.

[0011] Preferably, one end of the isolation pull cord is connected to the surface of the winding shaft that rotates inside the winding box, and is wound around the surface of the winding shaft, playing a major connecting role and enabling unfolding and winding movements.

[0012] Preferably, the top of the winding shaft extends through the top of the sleeve, and a knob is provided at the top of the winding shaft so that the user can easily wind up the isolation rope by turning the knob, making it convenient for recycling.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This crane guardrail device, through the adjustment of locking bolts, turntable, etc., allows the device to flexibly adjust itself when facing uneven ground, changing its posture to achieve a stable installation state. Whether the ground on the construction site is not flat or the crane is located in a complex terrain with a certain slope, the guardrail device can be installed firmly.

[0015] 2. The safety barrier device for cranes is rotatably connected to the inside of the winding box and sleeve via the winding shaft in the winding unit, and a knob is provided on its top. Users can easily control the winding shaft to wind up the isolation rope by simply turning the knob. When the safety barrier device is finished or when it is necessary to adjust the unfolded length of the isolation rope, the rope can be quickly retracted. The operation is very convenient and does not require complicated tools or excessive manpower. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the appearance and structure of this utility model;

[0017] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 3 This is a schematic diagram of the unfolding structure of the isolation pull rope of this utility model;

[0019] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B.

[0020] In the diagram: 1. Connecting mechanism; 101. Mounting base plate; 102. Fixing hole; 103. Steering angle; 104. Rotating shaft connecting plate; 105. Locking bolt; 106. Turntable; 2. Expansion cabinet; 201. Adjusting sleeve; 202. Adjusting hole; 203. Lifting adjustment rod; 204. Spring lock block; 205. Sleeve; 206. Rewind box; 207. Rewind shaft; 211. Hanging ring; 212. Isolation rope; 213. Connecting block; 214. Lock. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 The present invention provides the following technical solution: a guardrail device for cranes, comprising a connecting mechanism 1 and an expansion cabinet 2, wherein the expansion cabinet 2 is movably connected to the top of the connecting mechanism 1.

[0023] The expansion cabinet 2 includes a winding unit and a docking unit. The winding unit is rotatably connected to the top of the connecting mechanism 1, and the docking unit is movably connected to the inside of the winding unit.

[0024] The connecting mechanism 1 consists of a mounting base plate 101, a fixing hole 102, a steering angle 103, a rotating shaft connecting plate 104, a locking bolt 105, and a turntable 106. The fixing hole 102 is formed on the surface of the mounting base plate 101. The steering angle 103 is fixedly connected to the top of the mounting base plate 101. The rotating shaft connecting plate 104 is rotatably connected to the surface of the steering angle 103. The locking bolt 105 is threadedly connected to the inside of the steering angle 103 and the rotating shaft connecting plate 104. The turntable 106 is rotatably connected to the top of the rotating shaft connecting plate 104, playing a major adjustment role. It enables the device to achieve a stable posture by adjustment when installed on uneven ground, thus improving the stability of the installation.

[0025] The winding unit consists of an adjusting sleeve 201, an adjusting hole 202, a lifting adjusting rod 203, a spring locking block 204, a sleeve 205, a winding box 206, and a winding shaft 207. The adjusting sleeve 201 is fixedly connected to the top of the turntable 106. The adjusting hole 202 is located on the surface of the adjusting sleeve 201. The lifting adjusting rod 203 is movably connected to the inside of the adjusting sleeve 201. The spring locking block 204 is movably connected to the inside of the adjusting sleeve 201. The sleeve 205 is fixedly connected to the top of the lifting adjusting rod 203. The winding box 206 is fixedly connected to the surface of the sleeve 205. The winding shaft 207 is rotatably connected to the inside of the winding box 206 and the sleeve 205, playing the main winding function and facilitating retrieval and installation. The top of the winding shaft 207 extends through the top of the sleeve 205. A knob is also provided on the top of the winding shaft 207, allowing the user to rotate the isolation rope 212. The winding mechanism facilitates easy recycling. The docking unit consists of a hook ring 211, a barrier pull rope 212, a connecting block 213, and a locking buckle 214. The hook ring 211 is fixedly connected to the side of the winding box 206. The barrier pull rope 212 is movably connected to the inside of the winding box 206. One end of the barrier pull rope 212 is connected to the surface of the winding shaft 207, which rotates inside the winding box 206, and is wound around the surface of the winding shaft 207, playing a major connecting role and enabling unfolding and winding movements. The connecting block 213 is fixedly connected to one end of the barrier pull rope 212. The locking buckle 214 is fixedly connected to the side of the connecting block 213, playing a major connecting role and facilitating expansion installation. The locking buckle 214 is engaged inside the hook ring 211, playing a major expansion connection role. By engaging the locking buckle 214 with the surface of the hook ring 211 of another device, the barrier pull rope 212 is pulled up, achieving the function of isolation and warning.

[0026] During use, the staff plans the dangerous areas of the crane and places and installs the device one by one according to the planned path. The installation angle and connection height of the mounting base plate 101 are adjusted and locked according to the placement position. The staff completes the installation docking by pulling the isolation rope 212 and attaching the isolation rope 212 to the attachment ring 211 of another device.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A guardrail device for a crane, comprising a connecting mechanism (1) and an expansion cabinet (2), characterized in that: The expansion cabinet (2) is movably connected to the top of the connecting mechanism (1); The expansion cabinet (2) includes a winding unit and a docking unit. The winding unit is rotatably connected to the top of the connecting mechanism (1), and the docking unit is movably connected to the inside of the winding unit. The connecting mechanism (1) consists of a mounting base plate (101), a fixing hole (102), a steering angle (103), a rotating shaft connecting plate (104), a locking bolt (105), and a turntable (106). The fixing hole (102) is opened on the surface of the mounting base plate (101). The steering angle (103) is fixedly connected to the top of the mounting base plate (101). The rotating shaft connecting plate (104) is rotatably connected to the surface of the steering angle (103). The locking bolt (105) is threadedly connected to the inside of the steering angle (103) and the rotating shaft connecting plate (104). The turntable (106) is rotatably connected to the top of the rotating shaft connecting plate (104).

2. A protective railing device for a crane according to claim 1, characterized in that: The winding unit consists of an adjusting sleeve (201), an adjusting hole (202), a lifting adjusting rod (203), a spring locking block (204), a sleeve (205), a winding box (206), and a winding shaft (207). The adjusting sleeve (201) is fixedly connected to the top of the turntable (106). The adjusting hole (202) is opened on the surface of the adjusting sleeve (201). The lifting adjusting rod (203) is movably connected to the inside of the adjusting sleeve (201). The spring locking block (204) is movably connected to the inside of the adjusting sleeve (201). The sleeve (205) is fixedly connected to the top of the lifting adjusting rod (203). The winding box (206) is fixedly connected to the surface of the sleeve (205). The winding shaft (207) is rotatably connected to the inside of the winding box (206) and the sleeve (205).

3. A protective railing device for a crane according to claim 2, characterized in that: The docking unit consists of a hook ring (211), a barrier rope (212), a connecting block (213), and a buckle (214). The hook ring (211) is fixedly connected to the side of the winding box (206). The barrier rope (212) is movably connected to the inside of the winding box (206). The connecting block (213) is fixedly connected to one end of the barrier rope (212). The buckle (214) is fixedly connected to the side of the connecting block (213).

4. A protective railing device for a crane according to claim 3, characterized in that: The latch (214) is engaged inside the hanging ring (211).

5. A guardrail device for a crane according to claim 4, characterized in that: One end of the isolation pull cord (212) is connected to the surface of the take-up shaft (207) that rotates inside the take-up box (206), and is wound around the surface of the take-up shaft (207).

6. A guardrail device for a crane according to claim 5, characterized in that: The top of the take-up shaft (207) extends through the top of the sleeve (205), and a knob is provided on the top of the take-up shaft (207).

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