A flatbed vehicle for straightening and laying copper-plated round steel for rail transit

Abstract

This utility model discloses a flatbed cart for straightening and laying copper-plated round steel for rail transit, comprising a flatbed cart and straightening, placement, and stacking components mounted on the flatbed cart. The stacking component includes a bidirectional lead screw mounted on the flatbed cart and two limiting structures mounted on the bidirectional lead screw. The two limiting structures move relative to each other along the length of the bidirectional lead screw. A sleeve is installed on the flatbed cart, which slides in conjunction with the two limiting structures. Several positioning structures connected to the two limiting structures are installed on the sleeve. This utility model has a simple structure, integrating the placement, stacking, and straightening functions of copper-plated round steel into a single flatbed cart design. This overcomes the limitations of separating straightening and laying processes in traditional methods, effectively reducing process changeover time and manual operation. The functional modules can be freely combined and flexibly selected, significantly improving the laying efficiency and operational continuity of copper-plated round steel for subway supports.

Description

Technical Field

[0001] This utility model relates to the field of copper-plated round steel laying technology, specifically a flatbed vehicle for straightening and laying copper-plated round steel for rail transit. Background Technology

[0002] As an important form of urban rail transit, the subway is a public transportation system built in cities, powered by electric traction, and characterized by high speed and large capacity. It plays a vital role in alleviating urban traffic pressure and improving travel efficiency. In the construction and operation of subway tunnels, the safety grounding system is a crucial link in ensuring the normal operation of equipment and the safety of personnel. Typically, the metal supports inside the tunnel are connected and grounded by laying copper-plated round steel to ensure good electrical continuity and grounding performance.

[0003] However, existing grounding construction methods suffer from significant efficiency problems. Copper-plated round steel is usually transported to the construction site in coils. Due to bending deformation during transportation and storage, it must be straightened before installation. This straightening process not only requires specialized straightening equipment and manual operation, increasing construction complexity and equipment investment, but also requires the straightened copper-plated round steel to be fixedly connected to the support section by section. The entire process is cumbersome and time-consuming, seriously affecting the construction progress of integrated pipelines in tunnels and resulting in low overall construction efficiency. To address this, a flatbed cart integrating the straightening and laying of copper-plated round steel for rail transit is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a flatbed vehicle for straightening and laying copper-plated round steel in rail transit, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a flatbed vehicle for straightening and laying copper-plated round steel for rail transit, comprising a flatbed vehicle and straightening components, placement components and stacking components disposed on the flatbed vehicle; The stacking assembly includes a bidirectional lead screw mounted on a flatbed truck and two limiting structures mounted on the bidirectional lead screw. The two limiting structures move relative to each other along the length of the bidirectional lead screw. A sleeve is mounted on the flatbed truck, which slides in cooperation with the two limiting structures. Several positioning structures connected to the two limiting structures are mounted on the sleeve.

[0006] As a further embodiment of this utility model: one end of the bidirectional lead screw passes through the bottom of the flatbed and is equipped with a worm gear; a motor is installed at the bottom of the flatbed; and a worm gear that meshes with the worm gear is installed at the output end of the motor.

[0007] As a further embodiment of this utility model: the limiting structure includes a threaded sleeve sleeved on the outer circumferential surface of the bidirectional lead screw, the threaded sleeve slidingly engaging with the interior of the sleeve, and a plurality of hydraulic rods installed on the outer circumferential surface of the threaded sleeve, the ends of the plurality of hydraulic rods passing through the sleeve and connected to a limiting rod.

[0008] As a further embodiment of this utility model: the sleeve is provided with a plurality of limiting grooves, and the plurality of limiting grooves correspond one-to-one with a plurality of hydraulic rods, and the hydraulic rods are located in the limiting grooves.

[0009] As a further embodiment of this utility model: the positioning structure includes several electric push rods connected to the sleeve, and each electric push rod has a connecting rod installed at the end away from the sleeve. The two ends of each connecting rod pass through two limiting structures respectively, and a limiting block is installed at the end.

[0010] As a further embodiment of this utility model: the straightening assembly includes a support platform mounted on a flatbed vehicle and a guide platform mounted on the support platform. The guide platform has two movable seats installed inside, and each movable seat has several connecting shafts with ends passing through the top of the guide platform. Each connecting shaft has a straightening wheel installed at its end. A second bidirectional lead screw is installed on the side of the guide platform. The second bidirectional lead screw is threadedly connected to the two movable seats respectively, and a motor is installed at the end of the second bidirectional lead screw.

[0011] As a further embodiment of this utility model: the placement assembly includes a rotating bracket mounted on a flatbed cart, an electric telescopic rod installed at the end of the rotating bracket, multiple hydraulic groups installed at the end of the electric telescopic rod, each hydraulic group consisting of two No. 1 hydraulic rods, each end of which is fitted with a support arm, a first electric push rod installed at the end of the electric telescopic rod, a support rod installed at the end of the first electric push rod, and sliders installed at both ends of the support rod, the sliders being adapted to the grooves formed on the support arm.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This device integrates the placement, stacking, and straightening functions of copper-plated round steel bars into a flatbed cart design, overcoming the limitations of separating straightening and laying processes in traditional methods. This effectively reduces process changeover time and manual operation, allowing for free combination and flexible selection of functional modules, significantly improving the laying efficiency and operational continuity of copper-plated round steel bars for subway supports. Furthermore, through the coordinated operation of two limiting structures, a bidirectional lead screw, a sleeve, and a positioning structure, the distance between the two limiting structures can be flexibly adjusted, achieving stable stacking and precise positioning of copper-plated round steel bars of different quantities and diameters. This design greatly enhances the adaptability and versatility of the equipment, effectively broadening its application scope. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the disassembled stacking components in this utility model; Figure 3 This is a schematic diagram of the copper-plated round steel placement assembly in this utility model; Figure 4 This is a schematic diagram of the disassembled straightening component in this utility model; Figure 5 This is a structural diagram showing the disassembled internal components of the straightening assembly in this utility model; Figure 6 This is a cross-sectional structural diagram of the movable seat in this utility model.

[0014] In the diagram: 1. Flatbed trolley; 2. Straightening assembly; 201. Support platform; 202. Guide platform; 203. Movable seat; 204. Connecting shaft; 205. Straightening wheel; 206. Second double-acting lead screw; 207. Motor; 3. Placement assembly; 301. Bracket; 302. Electric telescopic rod; 303. First hydraulic rod; 304. Support arm; 305. First electric push rod; 306. Support rod; 307. Slider; 4. Stacking assembly; 401. Double-acting lead screw; 402. Limiting structure; 4021. Screw sleeve; 4022. Hydraulic rod; 4023. Limiting rod; 403. Sleeve; 404. Positioning structure; 4041. Electric push rod; 4042. Connecting rod; 4043. Limiting block; 405. Worm gear; 406. Motor; 407. Worm. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-6 In this embodiment of the utility model, a flatbed vehicle for straightening and laying copper-plated round steel for rail transit includes a flatbed vehicle 1 and a straightening component 2, a placement component 3 and a stacking component 4 disposed on the flatbed vehicle 1. The stacking assembly 4 includes a bidirectional lead screw 401 mounted on a flatbed trolley 1 and two limiting structures 402 mounted on the bidirectional lead screw 401. The two limiting structures 402 move relative to each other along the length of the bidirectional lead screw 401. A sleeve 403 is mounted on the flatbed trolley 1, which slides in cooperation with the two limiting structures 402. Several positioning structures 404 connected to the two limiting structures 402 are mounted on the sleeve 403. One end of the bidirectional lead screw 401 passes through the bottom of the flatbed trolley 1 and is fitted with a worm gear 405. A motor 406 is mounted on the bottom of the flatbed trolley 1, and a worm 407 that meshes with the worm gear 405 is mounted on the output end of the motor 406.

[0017] Specifically, the straightening component 2, placement component 3, and stacking component 4 on the flatbed trolley 1 can be used individually or in combination. During use, according to the size of the round steel coil, the motor 406 is started, driving the worm gear 407 to rotate, which in turn drives the worm wheel 405 to rotate. The rotation of the worm wheel 405 causes the connected bidirectional lead screw 401 to rotate synchronously. The two threaded sleeves 4021 that cooperate with the bidirectional lead screw 401 generate relative movement on the sleeve 403, thereby adjusting the distance between the two limiting rods 4023 to accommodate round steel coils of different diameters. Furthermore, the limiting structure 402 includes a threaded sleeve 4021 sleeved on the outer circumferential surface of the bidirectional lead screw 401. The threaded sleeve 4021 slides within the sleeve 403, and several hydraulic rods 4022 are installed on the outer circumferential surface of the threaded sleeve 4021. Each hydraulic rod 4022 has its end protruding through a sleeve 403 and connected to a limiting rod 4023. The sleeve 403 has several limiting grooves, each corresponding to one of the hydraulic rods 4022, with the hydraulic rods 4022 positioned within the grooves. This design effectively limits the maximum and minimum spacing of the limiting structures 402, ensuring stable and reliable adjustment. Using this device, the distance between the end of the limiting rod 4023 and the sleeve 403 is reduced by retracting the hydraulic rod 4022. Then, after placing the round steel coil between two limiting structures 402, the hydraulic rod 4022 extends, increasing the distance between the end of the limiting rod 4023 and the sleeve 403. This allows for the neat stacking and convenient retrieval of round steel coils of various specifications.

[0018] Please see Figure 2 In one embodiment, preferably, the positioning structure 404 includes a plurality of electric push rods 4041 connected to the sleeve 403. Each electric push rod 4041 has a connecting rod 4042 installed at the end away from the sleeve 403. The two ends of each connecting rod 4042 pass through two limiting structures 402 respectively, and a limiting block 4043 is installed at the end. Furthermore, the electric push rod 4041 drives the connecting rod 4042 to be pushed out synchronously, which can contact and radially limit the inner wall of the round steel coil.

[0019] Please see Figure 4-6 In one embodiment, preferably, the straightening assembly 2 includes a support platform 201 mounted on the flatbed trolley 1 and a guide platform 202 mounted on the support platform 201. Two movable seats 203 are installed inside the guide platform 202. Each movable seat 203 is equipped with several connecting shafts 204 whose ends pass through the top of the guide platform 202. Each connecting shaft 204 has a straightening wheel 205 installed at its end. A second bidirectional lead screw 206 is mounted on the side of the guide platform 202. The second bidirectional lead screw 206 is threadedly connected to the two movable seats 203 respectively. A motor 207 is mounted at the end of the second bidirectional lead screw 206 and is connected to the support platform 201.

[0020] Specifically, the guide table 202 is mounted on the support table 201, and its upper surface is flush with the upper surface of the guide table 202. Two movable seats 203 inside the guide table 202 are arranged opposite each other and connected by a second bidirectional lead screw 206. The guide table 202 restricts the rotation of the two movable seats 203. When the motor 207 drives the second bidirectional lead screw 206 to rotate, the two movable seats 203 move synchronously in opposite directions along the length of the second bidirectional lead screw 206, thereby adjusting the position between the connecting shafts 204 on the two movable seats 203. Multiple straightening wheels 205 on the two movable seats 203 are staggered to facilitate the straightening of round steel. The design of the second bidirectional lead screw 206 and the movable seats 203 can accommodate most round steel sizes. Two guide sleeves are also installed at both ends of the upper part of the support table 201. The two guide sleeves are used to receive and deliver round steel respectively to ensure that the round steel is straightened smoothly.

[0021] Please see Figure 3 In one embodiment, preferably, the placement component 3 includes a rotating bracket 301 mounted on the flatbed trolley 1. An electric telescopic rod 302 is mounted at the end of the rotating bracket 301. The electric telescopic rod 302 and the rotating bracket 301 are rotatably connected. When the round steel coil is unwound, the electric telescopic rod 302 will rotate along with it. Multiple hydraulic groups are mounted at the end of the electric telescopic rod 302. Each hydraulic group consists of two first hydraulic rods 303. Support arms 304 are mounted at the ends of the two first hydraulic rods 303. A first electric push rod 305 is also mounted at the end of the electric telescopic rod 302. A support rod 306 is mounted at the end of the first electric push rod 305. Slider 307 is mounted at both ends of the support rod 306. The slider 307 is adapted to the groove formed on the support arm 304.

[0022] Specifically, the rotating bracket 301 is fixedly connected to the flatbed trolley 1 and can drive the electric telescopic rod 302 to rotate, thereby adjusting the relative angle between the electric telescopic rod 302 and the straightening component 2. The rotating bracket 301 and the electric telescopic rod 302 are sufficient to support the placement of the round steel coil. When the round steel on the placement component 3 needs to be straightened by the straightening component 2, the position of the electric telescopic rod 302 can be adjusted by rotating the rotating bracket 301, making the bending angle of the round steel conveying path gentler, which is conducive to the smooth and stable conveying of the round steel to the straightening component 2. The number of hydraulic groups is not limited. In this embodiment, preferably, there are four hydraulic groups, which are equally spaced. Each hydraulic group consists of two No. 1 hydraulic rods 303. Both No. 1 hydraulic rods 303 are equipped with support arms 304, and the two support arms 304 are spaced apart. The area is used to place round steel coils, and a support rod 306 is installed at the end of the first electric push rod 305. The position of the support rod 306 can be adjusted as the first electric push rod 305 extends or retracts to accommodate round steel coils with different inner diameters. When it is necessary to place the round steel coil in the placement assembly 3, the first hydraulic rod 303 retracts first to place the round steel coil between the two support arms 304. Then, the first hydraulic rod 303 extends, and the two support arms 304 clamp and fix the two sides of the round steel coil. Next, the first electric push rod 305 extends, driving the support rod 306 to contact the inner wall of the round steel coil and achieve radial limiting. During the movement of the support rod 306, the structure of the slide groove and the slider 307 enhances the support strength of the support rod 306 on the one hand, and limits the stroke range of the slider 307 when it extends or retracts on the other hand, ensuring stable and reliable operation.

[0023] The working principle and usage process of this utility model are as follows: First, place the coiled copper-plated round steel on the copper-plated round steel placement assembly 3. Start the electric telescopic rod 302 and adjust its extension length according to actual operational needs. Then, retract the first hydraulic rod 303 to place the round steel coil between the two support arms 304. Next, activate the first electric push rod 305, which drives the support rod 306 to move, causing the support rod 306 to abut against the inner ring of the copper-plated round steel. Adjust the support rod 306 by sliding the slider 307 within the support arm 304. Positioning: The copper-plated round steel is spread out to accommodate its diameter, thus completing the placement and fixing of the copper-plated round steel. Additionally, other copper-plated round steel can be stacked on the stacking assembly 4. Based on the required quantity and size of the copper-plated round steel, the motor 406 is started. The motor 406 drives the worm gear 407 to rotate, which in turn drives the worm wheel 405 to rotate, thereby driving the connected bidirectional lead screw 401 to rotate. The rotation of the bidirectional lead screw 401 causes the two threaded sleeves 4021 to move towards or away from each other, thereby adjusting the distance between the limiting rods 4023, achieving [the desired movement / position]. The lateral positioning of multiple copper-plated round steel positions is then controlled. Subsequently, the electric push rod 4041 is activated, which, through the connecting rod 4042, pushes the limiting block 4043 to move, clamping and limiting the diameter of the copper-plated round steel, thus achieving stable stacking of the copper-plated round steel. When straightening the round steel coils on the placement assembly 3 is required, firstly, the rotation angle of the rotating bracket 301 is adjusted to make the bending angle of the conveying path between the straightening assembly 2 and the placement assembly 3 more gradual, facilitating the smooth introduction of the round steel. Then, the copper-plated round steel to be straightened is introduced from one end of the placement assembly 3. The straightening assembly 2 precisely guides and positions the round steel bars in and out through the guide sleeve. Then, the motor 207 is started, driving the second bidirectional lead screw 206 to rotate, causing the movable seat 203 to slide laterally within the guide table 202, thereby adjusting the distance between the straightening wheels 205 on both sides to accommodate copper-plated round steel bars of different diameters. After adjustment, the copper-plated round steel bars are passed through the straightening wheels 205 in sequence. The multiple straightening wheels 205 work together to gradually straighten the round steel bars by applying pressure at multiple points, thus completing the straightening process of the copper-plated round steel bars.

[0024] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0025] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A flatbed vehicle for straightening and laying copper-plated round steel in rail transit, characterized in that, Includes a flatbed truck and straightening, placement and stacking components mounted on the flatbed truck; The stacking assembly includes a bidirectional lead screw mounted on a flatbed truck and two limiting structures mounted on the bidirectional lead screw. The two limiting structures move relative to each other along the length of the bidirectional lead screw. A sleeve is mounted on the flatbed truck, which slides in cooperation with the two limiting structures. Several positioning structures connected to the two limiting structures are mounted on the sleeve.

2. The flatbed vehicle for straightening and laying copper-plated round steel for rail transit according to claim 1, characterized in that, One end of the bidirectional lead screw passes through the bottom of the flatbed and is fitted with a worm gear. A motor is installed at the bottom of the flatbed, and a worm gear that meshes with the worm gear is installed at the output end of the motor.

3. The flatbed car for straightening and laying copper-plated round steel for rail transit according to claim 1, characterized in that, The limiting structure includes a threaded sleeve fitted on the outer circumferential surface of the bidirectional lead screw. The threaded sleeve slides in conjunction with the inside of the sleeve, and several hydraulic rods are installed on the outer circumferential surface of the threaded sleeve. The ends of the several hydraulic rods all protrude from the sleeve and are connected to a limiting rod.

4. The flatbed vehicle for straightening and laying copper-plated round steel for rail transit according to claim 3, characterized in that, The sleeve has several limiting grooves, each corresponding to a hydraulic rod, and the hydraulic rod is located within the limiting groove.

5. The flatbed car for straightening and laying copper-plated round steel for rail transit according to claim 1, characterized in that, The positioning structure includes several electric push rods connected to the sleeve. Each electric push rod has a connecting rod installed at the end away from the sleeve. Both ends of each connecting rod pass through two limiting structures and are fitted with limiting blocks at their ends.

6. The flatbed vehicle for straightening and laying copper-plated round steel for rail transit according to claim 1, characterized in that, The straightening assembly includes a support platform mounted on a flatbed cart and a guide platform mounted on the support platform. The guide platform has two movable seats installed inside, and each movable seat has several connecting shafts whose ends pass through the top of the guide platform. Each connecting shaft has a straightening wheel installed at its end. A second bidirectional lead screw is installed on the side of the guide platform. The second bidirectional lead screw is threadedly connected to the two movable seats respectively, and a motor is installed at the end of the second bidirectional lead screw.

7. The flatbed car for straightening and laying copper-plated round steel for rail transit according to claim 1, characterized in that, The placement assembly includes a rotating bracket mounted on a flatbed truck. An electric telescopic rod is installed at the end of the rotating bracket. Multiple hydraulic groups are installed at the end of the electric telescopic rod. Each hydraulic group consists of two No. 1 hydraulic rods. Support arms are installed at the ends of the two No. 1 hydraulic rods. A first electric push rod is also installed at the end of the electric telescopic rod. A support rod is installed at the end of the first electric push rod. Slider blocks are installed at both ends of the support rod. The sliders are adapted to the grooves formed on the support arms.

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