Iron tower material conveying trolley

Abstract

An iron tower material conveying trolley comprises a conveying base and a linear guide rail matched with the conveying base, a storage rack used for storing angle steel is arranged on the conveying base, a positioning device is arranged on the storage rack and comprises a lifting rod, the front end of the lifting rod is connected with a pressing plate, and the pressing plate is connected with a clamping plate. A plurality of abutting blocks are arranged on the pressing plate in a sliding mode, and each abutting block can be located at a certain position on the pressing plate. The angle steel clamping device has the advantages that the pressing plate is driven by the lifting rod to press downwards, and the angle steel clamping device is matched with the abutting blocks with the positions capable of being independently adjusted, so that angle steel of different sizes can be adaptively clamped.

Description

Technical Field

[0001] This utility model relates to a workshop material transport equipment, and more particularly to a trolley for transporting materials to iron towers. Background Technology

[0002] In the tower production workshop, the rail transport vehicle is the core equipment for conveying angle steel materials. Its main task is to transfer cut and shaped angle steel from the raw material storage area to processing stations such as drilling, galvanizing, and welding. This equipment typically consists of a steel structure body, an electric drive system, guide wheel sets, and a simple loading platform, moving directionally along a pre-set track. During operation, workers start the transport vehicle via a control console to the loading station. Using a crane or robotic arm, multiple angle steel pieces are laid horizontally on the vehicle platform. After temporary securing using manual binding or simple barriers, the transport vehicle travels along the track at a certain speed to the target station. Finally, the unloading mechanism, in conjunction with hoisting equipment, completes the unloading process.

[0003] Existing rail transport vehicles exhibit significant positioning deficiencies in practical use: the lack of an adaptive clamping mechanism between the angle steel and the loading platform, relying solely on gravity friction and simple limiting devices, is insufficient to cope with inertial impacts during transportation. When the vehicle starts, stops, or curves, the angle steel is prone to longitudinal slippage and rigid collision with the vehicle body panels, leading to damage to the surface coating or structural deformation. More seriously, when transporting extra-long angle steel, its overhanging ends generate a lever effect under vibration conditions, causing the center of gravity of the entire bundle of angle steel to shift and triggering overturning accidents. Although the chain binding process added in traditional solutions can alleviate the displacement problem, it significantly reduces loading and unloading efficiency, and stress concentration at the binding points may cause local dents in the angle steel, directly affecting the accuracy of subsequent tower assembly. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a material transport trolley for iron towers with more stable positioning of angle steel.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a material transport trolley for iron towers, comprising a transport base and a linear guide rail that cooperates with the transport base. The transport base is provided with a shelf for placing angle steel. The shelf is provided with a positioning device. The positioning device includes a lifting rod. The front end of the lifting rod is connected to a pressure plate. Several abutment blocks are slidably arranged on the pressure plate, and each abutment block can be positioned at a certain point on the pressure plate.

[0006] The beneficial effects of this utility model are as follows: By driving the pressing plate downward with a lifting rod, and in conjunction with multiple independently adjustable clamping blocks, adaptive clamping of angle steel of different sizes is achieved. At least one of the clamping blocks can be inserted into the gap between adjacent angle steels to form physical isolation and avoid collision, while the remaining clamping blocks form spatial constraints through multi-point contact, effectively preventing displacement or slippage of the angle steel during transportation. As a preferred embodiment, the pressing plate adopts a segmented hinged structure, which can automatically adjust the contact angle with the stacked surface of the angle steel when the lifting rod is pressed down, ensuring that the contact pressure of each clamping block is evenly distributed. In addition, the bottom of the clamping block is provided with an arc-shaped guide surface. When the angle steel undergoes slight displacement due to vibration, an automatic reset force can be generated through the inclined contact, further improving the positioning reliability.

[0007] Furthermore, the pressing plate is provided with a sliding groove, and each pressing block is provided with a moving component connected thereto. The moving component is partially placed in the sliding groove and is used to drive the pressing block to move within the sliding groove.

[0008] The cooperation between the slide and the moving component enables precise lateral adjustment of the clamping block, and the clamping point position can be flexibly adjusted according to the spacing of the angle steel. As a preferred design, the slide adopts a T-shaped cross-section, and the moving component includes a matching T-shaped slider. By increasing the contact area, local pressure is reduced, preventing deformation of the slide body after long-term use from affecting sliding accuracy. The guide portion of the moving component is equipped with a self-lubricating coating, ensuring smooth movement while reducing metal-to-metal friction loss. This structure allows operators to adjust the position of the clamping block with one hand, significantly improving work efficiency.

[0009] Furthermore, the moving assembly includes a moving column that forms a clearance fit with the slide groove, a gripping handle, and a return spring. The two ends of the moving column are fixed to the abutment block and the gripping handle, respectively. The diameter of the gripping handle is larger than the width of the slide groove. The return spring is used to press the gripping handle against the upper surface of the pressure plate.

[0010] This structure achieves a self-locking function through spring preload, ensuring the locking block remains in position even under vibration. As a preferred design, the moving column employs a stepped shaft structure, with its upper diameter exceeding the width of the slide groove to create a mechanical limit, preventing excessive upward pull that could lead to component separation. The return spring uses a conical helical spring, maintaining a stable elastic coefficient during compression to ensure uniform locking force at different adjustment positions. The grip handle surface features anti-slip textures and is covered with an elastic rubber layer, improving handling while reducing the risk of accidental loosening.

[0011] Furthermore, the movable column includes a fixed part connected to the abutment block and a telescopic part connected to the gripping handle. The two ends of the return spring are respectively fixed to the bottom of the fixed part and the bottom end face of the telescopic part. The inner wall of the fixed part is symmetrically provided with two limiting grooves in the circumferential direction. The telescopic part is provided with two limiting sliders corresponding to the two limiting grooves. The telescopic part can move axially through the limiting sliders.

[0012] This telescopic structure ensures adjustable travel while preventing components from falling off. As a preferred design, the limiting groove employs an L-shaped trajectory. When the telescopic part rotates to a specific angle, the limiting slider can engage with the laterally extended section of the groove for temporary locking, facilitating fine-tuning of the abutment block position. Guide ribs within the fixed part cooperate with guide grooves on the outer wall of the telescopic part to ensure linear accuracy of the telescopic movement. Wear-resistant ceramic plates are embedded at the ends of the limiting slider, effectively reducing wear after long-term use and extending service life.

[0013] Furthermore, elastic pads are detachably provided on both end faces of the clamping block that contact the angle steel.

[0014] The elastic pads protect the angle steel surface and provide cushioning and vibration damping. As a preferred design, the elastic pads employ a modular structure, comprising a rigid polyurethane matrix and a replaceable rubber contact layer. The matrix connects to the clamping block via dovetail grooves, and the contact layer is secured by magnetic adsorption, enabling quick assembly and disassembly. The pad's contact surface features staggered raised textures, increasing the coefficient of friction while allowing fine debris to fall into the gaps, preventing impurities from affecting clamping stability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0016] Figure 2 This is a side view of the clamping plate in an embodiment of the present invention;

[0017] Figure 3 This is a cross-sectional view of the moving component according to an embodiment of the present utility model;

[0018] Figure 4 This is an internal view of the fixing part in an embodiment of the present utility model. Detailed Implementation

[0019] This utility model embodiment provides a material transport trolley for iron towers, such as... Figure 1-4As shown: The system includes a transport base 1 and a linear guide rail 2 that slides with the transport base 1. A shelf 3 for supporting angle steel is fixedly installed on the transport base 1. A positioning device 4 is provided on the top of the shelf 3. This positioning device 4 includes a vertically arranged lifting rod 41. The bottom end of the lifting rod 41 is connected to a laterally extending pressure plate 42. A through groove 421 is formed on the surface of the pressure plate 42 along its length. Three slidable abutment blocks 43 are provided within the groove 421. A moving assembly 44 is connected to the bottom of each abutment block 43. This moving assembly 44 includes a moving column 441 that passes through the groove 421. A gripping handle 442 is fixed to the top of the moving column 441, and the bottom end is connected to the abutment block 43 by threads. A return spring 443 is fitted in the middle section of the moving column 441. The upper end of the return spring 443 abuts against the bottom surface of the gripping handle 442, and the lower end abuts against the upper surface of the pressure plate 42.

[0020] The movable column 441 consists of a fixed part 4411 and a telescopic part 4412. The fixed part 4411 is fixedly connected to the abutment block 43, and two limiting grooves 4413 are symmetrically opened on its inner wall. Two limiting sliders 4414 are correspondingly provided on the outer wall of the telescopic part 4412. The two ends of the return spring 443 are fixed to the bottom of the fixed part 4411 and the bottom end face of the telescopic part 4412, respectively. When the grip handle 442 is lifted, the telescopic part 4412 drives the limiting sliders 4414 to move axially along the limiting grooves 4413. Replaceable elastic pads 431 are embedded in the working surfaces on both sides of the abutment block 43. The elastic pads 431 are fixed in the mounting grooves on both sides of the abutment block 43 by bolts.

[0021] When loading angle steel, the operator first raises the grip handle 442 to elevate the moving column 441. At this time, the return spring 443 is compressed, and the clamping block 43 is released from the constraint of the pressure plate 42, allowing it to slide laterally along the slide groove 421 to adjust the spacing. The clamping block 43 at the selected middle position is inserted into the gap between adjacent angle steels, with the two clamping blocks 43 respectively abutting against the outer surface of the angle steel. After releasing the grip handle 442, the return spring 443 pushes the moving column 441 back to its locked position. The flexible contact of the elastic pad 431 avoids scratching the angle steel surface and increases the holding force through friction. When the elastic pad 431 needs to be replaced, maintenance can be performed simply by removing the fixing bolts. If the angle steel is too long, it can be placed on two transport trolleys and clamped by the clamping blocks 43 to prevent it from detaching from the transport trolleys.

[0022] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A material transport trolley for iron towers, comprising a transport base and a linear guide rail cooperating with the transport base, wherein the transport base is provided with a shelf for placing angle steel, characterized in that: The shelf is equipped with a positioning device, which includes a lifting rod. The front end of the lifting rod is connected to a pressing plate. Several pressing blocks are slidably arranged on the pressing plate, and each pressing block can be positioned at a certain point on the pressing plate.

2. The material transport trolley for iron towers according to claim 1, characterized in that: The pressing plate is provided with a sliding groove, and each pressing block is provided with a moving component connected thereto. The moving component is partially placed in the sliding groove and is used to drive the pressing block to move within the sliding groove.

3. The material transport trolley for iron towers according to claim 2, characterized in that: The moving assembly includes a moving column that forms a clearance fit with the slide groove, a gripping handle, and a return spring. The two ends of the moving column are fixed to the abutment block and the gripping handle, respectively. The diameter of the gripping handle is larger than the width of the slide groove. The return spring is used to press the gripping handle against the upper surface of the pressure plate.

4. The material transport trolley for iron towers according to claim 3, characterized in that: The movable column includes a fixed part connected to the abutment block and a telescopic part connected to the grip handle. The two ends of the return spring are respectively fixed to the bottom of the fixed part and the bottom end face of the telescopic part. The inner wall of the fixed part is symmetrically provided with two limiting grooves in the circumference. The telescopic part is provided with two limiting sliders corresponding to the two limiting grooves. The telescopic part can move axially through the limiting sliders.

5. The material transport trolley for iron towers according to claim 1, characterized in that: Elastic pads are detachably provided on both end faces of the clamping block that contact the angle steel.

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