Adjustable variable-diameter steel column hoisting clamp

Abstract

The utility model belongs to the field of steel column hoisting clamps, and particularly relates to an adjustable variable-diameter steel column hoisting clamp which comprises a hoisting ring, a sliding groove is fixedly connected to the back face of the hoisting ring, an extension rod is slidably connected to the interior of the sliding groove in a limited mode, and another hoisting ring is fixedly connected to the side face of the extension rod. The side face of the hoisting ring is provided with a moving opening and fixedly connected with a variable-diameter assembly, and the surface of the variable-diameter assembly is fixedly connected with a hook. A guide rail of a reducing assembly and symmetrical sliding extrusion blocks are matched with positive and negative lead screw adjustment, so that the extrusion blocks move along the guide rail and extend into a hoisting ring, the side faces, making contact with a steel column, of the extrusion blocks are of an arc-shaped structure and make surface contact with the outer wall of the steel column, the attaching area is further increased by combining elastic deformation of a rubber pad, and extrusion force is evenly distributed; and meanwhile, it is guaranteed that the steel columns do not deviate in the clamping process through the sliding stability of the dovetail groove structure, and reliable fixing of the steel columns with different diameters is achieved.

Description

Technical Field

[0001] This utility model relates to the field of steel column hoisting clamps, specifically an adjustable diameter steel column hoisting clamp. Background Technology

[0002] Steel column hoisting clamps.

[0003] In the prior art, such as in CN218708603U, an adjustable diameter steel column hoisting clamp is disclosed, which includes: two parallel first frames and two parallel frame groups; the first frames and frame groups are connected end to end and enclose a hollow rectangular frame, the inner wall of the frame abuts against the steel column; the frame groups are configured to move along the length direction of the first frames and are configured to extend and retract along their own length direction.

[0004] Although the aforementioned patent can achieve enlargement and reduction of size through the configuration of the skeleton assembly, the contact surface with the steel column is not curved, the contact area is small, and the hoisting stability is poor; the lack of structural testing to check the hoisting stability means that the steel column may fall during hoisting, causing certain safety hazards; therefore, an adjustable diameter steel column hoisting clamp is proposed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, where the contact surface with the steel column is not curved and the contact area is small, resulting in poor hoisting stability, and the lack of structural testing to ensure hoisting stability, the steel column may fall during hoisting, posing a safety hazard. This invention proposes an adjustable diameter steel column hoisting clamp.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The adjustable diameter steel column hoisting clamp of this utility model includes a hoisting ring, a sliding groove is fixedly connected to the back of the hoisting ring, an extension rod is slidably connected inside the sliding groove, another hoisting ring is fixedly connected to the side of the extension rod, a moving opening is opened on the side of the hoisting ring and a diameter-changing component is fixedly connected thereto, a hook is fixedly connected to the surface of the diameter-changing component, and a monitoring component is fixedly connected to the surface of the hook.

[0007] The variable diameter assembly includes guide rails symmetrically fixed on both sides of the moving port. Symmetrically distributed extrusion blocks are slidably connected to the surface of the guide rails. The extrusion blocks have threaded holes on their sides and are threaded to positive and negative lead screws through the threaded holes. One end of the positive and negative lead screws is provided with an auxiliary rod. The extrusion blocks have grooves with built-in pressure sensors on their sides, and the surface of the grooves is covered with rubber pads.

[0008] The monitoring component includes a device box fixed to the top of the hook, with a buzzer embedded in the top opening of the device box, and a controller electrically connected to the control board inside the device box. The controller is connected to the pressure sensor via a wire.

[0009] Preferably, the two ends of the positive and negative lead screws are respectively provided with threaded sections with opposite directions of rotation, and the auxiliary rod has an L-shaped structure and anti-slip texture at the end.

[0010] Preferably, the pressure sensor forms a feedback loop with the buzzer through the control board, and triggers the buzzer to sound briefly when the pressure value reaches a preset threshold.

[0011] Preferably, the guide rails are symmetrically distributed on both sides of the moving port to form guide slides, and the extrusion block forms a sliding fit with the guide rails through a dovetail groove structure.

[0012] Preferably, the sliding end of the extension rod is provided with a limiting flange that fits with the inner wall of the groove, and the opening of the groove is provided with a stop to prevent the extension rod from falling out.

[0013] Preferably, the curved portion of the hook and the bottom surface of the device box of the monitoring component are integrally cast, and the sound hole of the buzzer is set to open towards the top surface of the device box.

[0014] The advantages of this utility model are:

[0015] 1. This utility model uses the guide rail of the variable diameter assembly and the symmetrical sliding extrusion block in conjunction with the positive and negative screw adjustment to make the extrusion block move along the guide rail and extend into the lifting ring. The side of the extrusion block that contacts the steel column has an arc-shaped structure, forming a surface contact with the outer wall of the steel column. Combined with the elastic deformation of the rubber pad, the contact area is further increased and the extrusion force is evenly distributed, avoiding damage to the surface of the steel column caused by local stress concentration. At the same time, the sliding stability of the dovetail groove structure ensures that the steel column does not shift during the clamping process, realizing reliable fixing of steel columns of different diameters.

[0016] 2. This utility model uses a pressure sensor to detect the pressure value between the extrusion block and the steel column in real time, and transmits the signal to the controller via the control board. When the pressure reaches the preset safety threshold, a buzzer is triggered to sound briefly, reminding the operator that the clamping force is up to standard, avoiding the risk of lifting and falling due to insufficient clamping, forming a closed-loop monitoring mechanism, and significantly improving the safety of lifting. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the variable diameter component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the monitoring component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.

[0022] In the diagram: 1. Lifting ring; 2. Slide groove; 3. Extension rod; 4. Variable diameter assembly; 41. Guide rail; 42. Extrusion block; 43. Positive and negative lead screws; 44. Auxiliary rod; 45. Pressure sensor; 46. Rubber pad; 5. Hook; 6. Monitoring assembly; 61. Equipment box; 62. Buzzer; 63. Control board; 64. Controller. Detailed Implementation

[0023] 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 scope of protection of the present utility model.

[0024] Please see Figures 1-4 As shown, an adjustable diameter steel column hoisting clamp includes a hoisting ring 1. A slide groove 2 is fixedly connected to the back of the hoisting ring 1. An extension rod 3 is slidably connected inside the slide groove 2. Another hoisting ring 1 is fixedly connected to the side of the extension rod 3. A moving opening is opened on the side of the hoisting ring 1 and a diameter-changing component 4 is fixedly connected thereto. A hook 5 is fixedly connected to the surface of the diameter-changing component 4, and a monitoring component 6 is fixedly connected to the surface of the hook 5. The diameter-changing component 4 includes guide rails 41 symmetrically fixed on both sides of the moving opening. A symmetrically distributed pressing block 42 is slidably connected to the surface of the guide rails 41. A threaded hole is opened on the side of the pressing block 42 and threadedly connected to a positive and negative lead screw 43 through the threaded hole. An auxiliary rod 44 is provided at one end of the positive and negative lead screw 43. A groove with a built-in pressure sensor 45 is opened on the side of the pressing block 42, and a rubber pad 46 is covered on the surface of the groove.

[0025] During operation, when the operator rotates the auxiliary rod 44 to drive the positive and negative lead screws 43, the two pressing blocks 42 move synchronously into the lifting ring 1 along the guide rail 41. The side of the pressing block 42 that contacts the steel column is processed into an arc-shaped structure that matches the outer diameter of the steel column. Combined with the elastic deformation of the rubber pad 46 covering the surface, a full circumferential surface contact is formed between the outer wall of the steel column and the pressing block 42. The dovetail groove limiting structure of the guide rail 41 ensures the stability of the moving trajectory of the pressing block 42 and avoids slippage due to uneven load when the steel column is clamped.

[0026] Furthermore, the monitoring component 6 includes a device box 61 fixed to the top of the hook 5. A buzzer 62 is embedded in the top opening of the device box 61, and a controller 64 electrically connected to the control board 63 is provided inside. The controller 64 is connected to the pressure sensor 45 through a wire.

[0027] During operation, the pressure sensor 45, a high-precision strain gauge sensor from the Honeywell HSC series, is embedded in the groove of the extrusion block 42 and closely attached to the rubber pad 46 to detect the clamping pressure signal in real time. The pressure data is transmitted to the STM32F4 series controller 64 in the equipment box 61 via a shielded wire. The control board 63 presets the pressure safety threshold. When the detected value reaches the threshold, the controller 64 outputs a pulse signal to trigger the TDK PS1240P02BT buzzer 62 to emit a short 85dB beep, indicating that the clamping force is up to standard. If it is not triggered, the positive and negative screws 43 need to be tightened until the alarm is triggered, forming a closed-loop feedback control of the clamping force.

[0028] Furthermore, the two ends of the positive and negative lead screws 43 are respectively provided with threaded sections with opposite directions of rotation, and the auxiliary rod 44 has an L-shaped structure and anti-slip texture at the end;

[0029] During operation, the two ends of the positive and negative lead screw 43 are respectively provided with threaded sections with opposite directions of rotation, which cooperate with the threaded holes on the side of the extrusion block 42. When rotating, it drives the two extrusion blocks 42 to move synchronously in opposite directions along the guide rail 41. The auxiliary rod 44 has an L-shaped structure and anti-slip texture at the end. Through its leverage effect, it reduces the force applied by rotating the positive and negative lead screw 43. At the same time, the anti-slip texture design enhances the stability of operation and grip, avoids adjustment deviation caused by hand slippage, and ensures that the clamping force is applied evenly.

[0030] Furthermore, the pressure sensor 45 forms a feedback loop with the buzzer 62 through the control board 63, and triggers the buzzer 62 to sound briefly when the pressure value reaches the preset threshold.

[0031] During operation, the pressure sensor 45 is embedded in the groove of the extrusion block 42 and forms a feedback loop with the buzzer 62 through the control board 63. When the clamping pressure of the extrusion block 42 on the steel column reaches the preset safety threshold, the controller 64 triggers the buzzer 62 to emit a short sound, which provides real-time indication of the clamping status, eliminates the error of human experience judgment, and avoids the risk of the steel column falling off due to insufficient clamping force.

[0032] Furthermore, the guide rails 41 are symmetrically distributed on both sides of the moving port to form guide slides, and the extrusion block 42 forms a sliding fit with the guide rails 41 through the dovetail groove structure;

[0033] During operation, the guide rail 41 is symmetrically fixed on both sides of the moving port, and its surface is slidably connected to the extrusion block 42 through the dovetail groove structure. The guiding effect of the dovetail groove restricts the extrusion block 42 to move only along the preset trajectory, preventing skew or jamming, while enhancing the extrusion block 42's ability to resist lateral forces when bearing the load of the steel column, ensuring the structural stability and reliability during the clamping process.

[0034] Working principle: The operator first slides the extension rod 3 in the groove 2 according to the length of the steel column, so that the distance between the two lifting rings 1 matches the length of the steel column; then the steel column is placed inside the lifting ring 1, and the auxiliary rod 44 of the rotating diameter component 4 drives the positive and negative lead screws 43 to rotate, forcing the two pressing blocks 42 to move synchronously into the lifting ring 1 along the dovetail groove guide structure of the guide rail 41. The arc-shaped contact surface of the pressing block 42 and the rubber pad 46 are in contact with the outer wall of the steel column to form a surface contact clamping; during the clamping process, the pressure sensor 45 detects the extrusion pressure signal in real time and transmits it to the controller 64 of the monitoring component 6 through the wire. When the pressure value reaches the preset safety threshold, the controller 64 triggers the buzzer 62 in the equipment box 61 to emit a short sound, indicating that the clamping is complete; at this time, the hook 5 bears the overall load of the equipment box 61 and the lifting ring 1 through the integrated casting structure. The limiting flange of the extension rod 3 and the stop part of the groove 2 jointly constrain the sliding range, ensuring that the steel column is stable and does not shift during the lifting process.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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 substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable telescopic steel column hoisting clamp, characterized in that: Including the lifting ring (1), the back of the lifting ring (1) is fixedly connected with the sliding groove (2), the inside of the sliding groove (2) is limitedly and slidably connected with the extension rod (3), the side of the extension rod (3) is fixedly connected with another lifting ring (1), the lifting ring side is provided with a moving mouth and is fixedly connected with a variable diameter assembly (4), the surface of the variable diameter assembly (4) is fixedly connected with a hook (5), and the surface of the hook (5) is fixedly connected with a monitoring assembly (6); The variable diameter assembly (4) comprises guide rails (41) symmetrically fixed on both sides of the moving mouth, the guide rails (41) are slidably connected with symmetrically distributed extrusion blocks (42), the side of the extrusion block (42) is provided with a threaded hole and is screwed with a forward and reverse screw rod (43) through the threaded hole, one end of the forward and reverse screw rod (43) is provided with an auxiliary rod (44), the side of the extrusion block (42) is provided with a groove with a built-in pressure sensor (45), and the surface of the groove is covered with a rubber pad (46); The monitoring assembly (6) comprises a device box (61) fixed on the top of the hook (5), a buzzer (62) embedded in the opening of the device box (61), and a controller (64) electrically connected with a control panel (63) arranged in the device box (61), and the controller (64) is connected with the pressure sensor (45) through wires.

2. The adjustable variable diameter steel column lifting clamp of claim 1, wherein: The two ends of the forward and reverse screw rod (43) are respectively provided with screw segments with opposite rotation directions, the auxiliary rod (44) is in L-shaped structure and the end thereof is provided with anti-skid lines.

3. The adjustable variable diameter steel column lifting clamp of claim 1, wherein: The pressure sensor (45) forms a feedback loop with the buzzer (62) through the control panel (63), and the buzzer (62) triggers a short chirp when the pressure value reaches a preset threshold.

4. The adjustable variable diameter steel column lifting clamp of claim 1, wherein: The guide rails (41) are symmetrically distributed on both sides of the moving mouth to form a guide slide, and the extrusion blocks (42) are slidably connected with the guide rails (41) through dovetail groove structures.

5. The adjustable variable diameter steel column lifting clamp of claim 1, wherein: The sliding end of the extension rod (3) is provided with a limiting flange matched with the inner wall gap of the sliding groove (2), and the opening of the sliding groove (2) is provided with a stop portion preventing the extension rod (3) from falling out.

6. The adjustable variable diameter steel column lifting clamp of claim 1, wherein: The curved portion of the hook (5) and the bottom surface of the device box (61) of the monitoring assembly (6) are integrally cast, and the sound hole of the buzzer (62) is arranged to face the top surface opening of the device box (61).

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