Hoisting equipment for replacing and laying long steel rail across line

Abstract

The utility model belongs to the field of long steel rail overline laying construction, and particularly relates to hoisting equipment for overline replacement and laying of long steel rails. Comprising a flat car, a balancing weight and a hoisting device, the balancing weight and the lifting device are arranged on the flat car in the length direction and can slide in the width direction of the flat car. The lifting device comprises a movable platform, a middle column, a lifting arm and a lifting hook; the mobile platform is used for sliding on the flat car, the middle column is installed on the mobile platform, the suspension arm is connected with the middle column, the suspension arm is divided into a cargo boom and a balance arm by taking the middle column as a boundary, and a lifting hook runway is arranged on the cargo boom; a balance mechanism is connected between the balance arm and the flat car; compared with the traditional rail changing operation, after the hoisting equipment for changing and laying the long steel rails in the cross-line mode is adopted for rail changing operation, the construction efficiency is greatly improved. And the operation time of one-time rail changing and rail welding is controlled within two hours. And the blocking construction of the small area has less influence on the operation of other vehicles.

Description

Technical Field

[0001] The utility model belongs to the field of long steel rail cross-line laying construction, and in particular relates to a hoisting device for cross-line replacement of long steel rails. Background Art

[0002] With the rapid development of my country's high-speed railways, rail replacement on currently operating lines is now performed on a line-by-line basis. This not only requires multiple window locations for construction, but also presents significant challenges in segmented construction. Preserving rails on-site can impede the train driver's field of vision, and delays in timely rail welding can affect train speeds. To further improve the efficiency of single rail replacements, enabling single rail replacements to be completed within a single window, a hoisting device for cross-line long rail replacement has been developed. Utility Model Content

[0003] An object of the present invention is to solve at least the above problems and to provide at least the advantages to be described below.

[0004] The utility model provides the following technical solution: a lifting device for replacing long rails across a line, comprising a flatbed truck, a counterweight block and a lifting device; the counterweight block and the lifting device are arranged along the length direction of the flatbed truck, and the counterweight block and the lifting device can slide along the width direction of the flatbed truck;

[0005] The lifting device includes a mobile platform, a center column, a boom and a hook; the mobile platform is used to slide on the flatbed truck, the center column is installed on the mobile platform, the boom is connected to the center column, and the boom is divided into a lifting arm and a balancing arm with the center column as the boundary. A hook runway is provided on the lifting arm, and the hook is assembled on the hook runway and can move along the hook runway; a balancing mechanism is connected between the balancing arm and the flatbed truck.

[0006] Furthermore, a slide groove parallel to its length direction is provided on the balancing arm, and a leveling shaft is provided at the position where the boom is connected to the center column, and the upper end of the center column is hinged to the leveling shaft; the balancing mechanism includes a balancing hydraulic cylinder and a body slot, the body slot is fixed on the top surface of the flatbed truck, the lower end of the balancing hydraulic cylinder is clamped with the body slot, and the upper end of the balancing hydraulic cylinder is hinged with a balancing slider, which is slidably clamped on the slide groove of the balancing arm.

[0007] Furthermore, the center column includes a hoisting center column and a vehicle-mounted center column. The vehicle-mounted center column is fixed on the mobile platform. The hoisting center column is installed inside the vehicle-mounted center column and is coaxial with the vehicle-mounted center column. The hoisting center column can rotate freely. A swivel driven gear is coaxially installed on the hoisting center column. A torque output mechanism is installed on the vehicle-mounted center column. The swivel drive gear on the output end of the torque output mechanism is engaged with the swivel driven gear. The hoisting center column is hinged to the leveling shaft.

[0008] Furthermore, a body slot is installed on the mobile platform in front and behind the center column. The body slot is a double-horn structure with wide openings on both sides and narrowed inside. The narrowed internal part of the body slot fits with the lower end of the balancing hydraulic cylinder.

[0009] Furthermore, the mobile platform includes a wheel box, which includes a wheel pair drive motor, a wheel box shell and four track wheels. The four track wheels are installed on the wheel box shell in groups of two through wheel axles. The wheel pair drive motor is installed on the wheel box shell. The wheel axles are divided into driving wheel axles and driven wheel axles. The driving wheel axle is equipped with a driven bevel gear and a driving sprocket. The driven wheel axle is equipped with a driven sprocket. A chain is connected between the driving sprocket and the driven sprocket. The driving bevel gear on the wheel pair drive motor is meshed with the driven bevel gear; the four track wheels of the wheel box move on the slide rails on the top surface of the flatbed truck.

[0010] Furthermore, a support plate extending outward is installed on the wheel box housing, and a fixing arm is installed on the bottom of the support plate through bolts, and the fixing arm is supported on the flatbed truck.

[0011] Furthermore, an insulating sulfide layer is provided on the top surface of the boom, and a column end insulator and a ring laser emitter are provided above the middle column. The annular horizontal beam of the ring laser emitter is centered on the middle column, and the distance from the top of the column end insulator to the contact network line is greater than 2 meters.

[0012] Furthermore, limiters are provided on the crane arm at the starting point and the end point of the hook runway.

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

[0014] 1. Compared to traditional rail-changing operations, the use of this new cross-line long rail replacement hoisting equipment significantly improves efficiency. The rail-changing and welding process is reduced to less than two hours. Furthermore, the small area of ​​the closed-off work area has minimal impact on other vehicles.

[0015] 2. The rail changing equipment and rail welding equipment are operated on separate routes, which not only avoids mutual interference between the two trains, but also improves construction efficiency.

[0016] 3. This utility model's hoisting equipment for replacing long rails across lines can accommodate rails of any length. This overcomes the previous problem of time constraints hindering efficiency improvements and creates opportunities for large-scale rail replacement and emergency rescue.

[0017] 4. Compared with traditional equipment, this equipment has added more protective measures, making the construction environment safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of a hoisting device for replacing long rails across a line;

[0019] Figure 2 This is a schematic diagram of the distribution position of the lifting device and counterweight;

[0020] Figure 3 is a schematic diagram of the balancing mechanism;

[0021] Figure 4 A schematic diagram of the vehicle body slot;

[0022] Figure 5 This is a schematic diagram of the hoisting center column;

[0023] Figure 6 is a schematic diagram of a wheel box;

[0024] Figure 7 Schematic diagram of the fixed arm.

[0025] In the figure: 1-wheel box; 1.1-track wheel; 1.2-wheel drive motor; 1.3-wheel box housing; 1.4-driving wheel shaft; 1.5-driven wheel shaft; 1.6-driven bevel gear; 1.7-driving sprocket; 1.8-driven sprocket; 1.9-chain; 1.10-driving bevel gear; 1.11-support plate; 1.12-fixed arm; 2-center column; 2.1-hoisting center column; 2.2-vehicle center column; 2.3 -rotating driven gear; 2.4-torque output mechanism; 2.5-rotating driving gear; 3-crane arm; 3.1-limiter; 4-balancing arm; 5-hook; 6-leveling shaft; 7-balancing hydraulic cylinder; 8-car body slot; 9-balancing slider; 10-post-end insulator; 11-ring laser transmitter; 12-counterweight; 13-rail; 14-line 1; 15-line 2; 16-flatbed car; 16.1-slide rail. DETAILED DESCRIPTION

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] like Figure 1 、 Figure 2As shown: a lifting equipment for replacing long rails across the line, including a flatbed car 16, a counterweight block 12 and a lifting device; the counterweight block 12 and the lifting device are arranged along the length direction of the flatbed car 16, and the counterweight block 12 and the lifting device can slide along the width direction of the flatbed car 16; the lifting device includes a mobile platform, a center column 2, a boom and a hook 5; the mobile platform is used to slide on the flatbed car 16, the center column 2 is installed on the mobile platform, the boom is connected to the center column 2, and the boom is divided into a lifting arm 3 and a balancing arm 4 with the center column 2 as the boundary, and a hook runway is provided on the lifting arm 3, and the hook 5 is assembled on the hook runway and can move along the hook runway; a balancing mechanism is connected between the balancing arm 4 and the flatbed car 16.

[0028] The boom is made of I-steel, and a limiter 3.1 is set at the starting point and end point of the hook runway on the boom 3 to prevent the hook 5 from getting stuck. A camera is set on the hook 5 to watch the hoisting situation in real time for easy command.

[0029] like Figure 3 As shown, the balancing arm 4 is provided with a slide parallel to its length, and a leveling shaft 6 is provided at the location where the boom connects to the center column 2. The upper end of the center column 2 is hinged to the leveling shaft 6. The balancing mechanism includes a balancing hydraulic cylinder 7 and a vehicle body slot 8. The vehicle body slot 8 is fixed to the top surface of the flatbed truck 16. The lower end of the balancing hydraulic cylinder 7 is engaged with the vehicle body slot 8. The upper end of the balancing hydraulic cylinder 7 is hinged to a balancing slider 9, which slides and engages with the slide of the balancing arm 4. As the balancing hydraulic cylinder 7 is extended and retracted, the balancing slider 9 at the upper end of the balancing hydraulic cylinder 7 reciprocates on the slide of the balancing arm 4, thereby leveling the boom.

[0030] like Figure 5 As shown, the center column 2 includes a hoisting center column 2.1 and a vehicle-mounted center column 2.2. The vehicle-mounted center column 2.2 is fixed to the mobile platform. The hoisting center column 2.1 is installed inside the vehicle-mounted center column 2.2 and is coaxial with the vehicle-mounted center column 2.2. The hoisting center column 2.1 can rotate freely. A bearing is provided between the hoisting center column 2.1 and the vehicle-mounted center column 2.2. A swivel driven gear 2.3 is coaxially mounted on the hoisting center column 2.1. The vehicle-mounted center column 2.2 is mounted with a torque output mechanism 2.4. The torque output mechanism 2.4 uses a reduction motor. The swivel drive gear 2.5 on the output end of the torque output mechanism 2.4 meshes with the swivel driven gear 2.3. The hoisting center column 2.1 is hinged to the leveling shaft 6. The torque output mechanism 2.4 drives the hoisting center column 2.1 to rotate via the swivel drive gear 2.5 and the swivel driven gear 2.3, thereby changing the direction of the boom.

[0031] like Figure 4As shown, the balancing hydraulic cylinder 7 moves with the balancing arm 4. The flatbed truck 16 is equipped with a car body slot 8 in front and behind the center column 2. The lifting arm 3 can rotate 180 degrees to lift the rails on the lines on both sides. The car body slot 8 has a double trumpet structure with wide openings on both sides and a narrow interior. The narrow interior of the car body slot 8 fits into the lower end of the balancing hydraulic cylinder 7. When the lower end of the balancing hydraulic cylinder 7 is connected to the car body slot 8, the outward-expanding opening guides the lower end of the balancing hydraulic cylinder 7 into the interior of the car body slot 8, and then the boom can be leveled.

[0032] like Figure 6 As shown: the mobile platform includes a wheel box 1, the wheel box 1 includes a wheel pair drive motor 1.2, a wheel box housing 1.3 and four track wheels 1.1, the four track wheels 1.1 are installed on the wheel box housing 1.3 in pairs through wheel axles, the wheel pair drive motor 1.2 is installed on the wheel box housing 1.3, the wheel axles are divided into a driving wheel axle 1.4 and a driven wheel axle 1.5, the driving wheel axle 1.4 is installed with a driven bevel gear 1.6 and a driving sprocket 1.7, the driven wheel axle 1.5 is installed with a driven sprocket 1.8, a chain 1.9 is connected between the driving sprocket 1.7 and the driven sprocket 1.8, and the driving bevel gear 1.10 on the wheel pair drive motor 1.2 is meshed with the driven bevel gear 1.6. The wheelset drive motor 1.2 drives the driving wheel shaft 1.4 to rotate through the driving bevel gear 1.10 and the driven bevel gear 1.6. The driving wheel shaft 1.4 drives the driven wheel shaft 1.5 through the driving sprocket 1.7, the driven sprocket 1.8 and the chain 1.9, so that the four track wheels 1.1 rotate synchronously.

[0033] The four rail wheels 1.1 of the wheel box 1 move on the slide rail 16.1 on the top surface of the flatbed car 16, and the counterweight block 12 is also slidably assembled on the slide rail 16.1 on the top surface of the flatbed car 16; when the lifting arm 3 lifts the rail on the left side, the counterweight block 12 moves to the right, and the wheel box 1 carries the lifting device to deviate from the center line of the flatbed car 16 and make a slight adjustment to the right. When the lifting device moves slightly, the balance arm 4 slides relative to the balance hydraulic cylinder 7; the lifting device deviates in the opposite direction of lifting to prevent the flatbed car 16 from tipping over when lifting the rail.

[0034] like Figure 7 As shown, a support plate 1.11 extending outward from the track is mounted on the wheel box housing 1.3. A fixed arm 1.12 is bolted to the bottom of the support plate 1.11, and the fixed arm 1.12 is supported on the flatbed trolley 16. After the wheel box 1 is moved, the fixed arm 1.12 is bolted to the bottom of the support plate 1.11, and the bottom of the fixed arm 1.12 is supported on the flatbed trolley 16. This prevents the wheel box 1 from moving on the slide rail 16.1 or falling off the slide rail 16.1 during lifting.

[0035] like Figure 1As shown, the top surface of the boom is coated with an insulating vulcanized layer. A post-end insulator 10 and a ring laser emitter 11 are located above the center post 2. The ring laser emitter 11 emits a circular horizontal beam centered on the center post 2. The distance from the top of the post-end insulator 10 to the catenary line is greater than 2 meters. During operation, the ring laser emitter 11 emits a circular horizontal beam to remind on-site construction workers to maintain a safe distance from the catenary line.

[0036] The preparatory work before hoisting of the hoisting equipment for replacing long rails across the line according to this embodiment includes:

[0037] (1) Repair and maintain the equipment to ensure that all parts of the structure are free of faults;

[0038] (2) Investigate the operation status of the rail section to be replaced, adjust and fix the position of the counterweight and lifting device, and confirm the number of lifting equipment vehicles required for equipment grouping;

[0039] (3) Lifting rails and loading them onto trains;

[0040] The construction process of a hoisting device for replacing long rails across a line using this embodiment includes:

[0041] (1) After the equipment reaches the construction site, it is stopped and the rail fixation is cancelled;

[0042] (2) Start the torque output mechanism and rotate the hoisting center column until the lower end of the balance arm hydraulic cylinder slides into the vehicle body slot and is fixed; finally, adjust the length of the balance arm hydraulic cylinder to make the boom level;

[0043] At the same time, after the section to be replaced is confirmed by on-site technicians, the long rails are cut into pieces. The spikes of the rails in the section to be replaced are removed using a screw machine, and the construction workers peel off the spring bars and gauge blocks and place them between the two rail support platforms.

[0044] 3) Move the hook on the crane arm so that it hooks the rail to be replaced; slowly lift the rail through the joint control of multiple lifting devices;

[0045] 4) Hoist the rails to the empty space where they are placed;

[0046] 6) Lift the spare rail and place it in the empty rail groove;

[0047] Repeat the above steps (4) to (6) to complete the replacement of a pair of rails;

[0048] (7) The welding machine enters the site to weld the rails.

[0049] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hoisting device for replacing long rails across a line, characterized by: The invention comprises a flatbed truck (16), a counterweight (12) and a lifting device; the counterweight (12) and the lifting device are arranged along the length direction of the flatbed truck (16); the counterweight (12) and the lifting device can slide along the width direction of the flatbed truck (16); The lifting device comprises a mobile platform, a center column (2), a lifting arm and a hook (5); the mobile platform is used for sliding on a flatbed vehicle (16); the center column (2) is mounted on the mobile platform; the lifting arm is connected to the center column (2); the lifting arm is divided into a lifting arm (3) and a balancing arm (4) with the center column (2) as a boundary; a hook runway is provided on the lifting arm (3); the hook (5) is assembled on the hook runway and can move along the hook runway; a balancing mechanism is connected between the balancing arm (4) and the flatbed vehicle (16).

2. The hoisting equipment for replacing long rails across a line according to claim 1, characterized in that: The balancing arm (4) is provided with a slide groove parallel to its length direction, and a leveling shaft (6) is provided at the position where the boom is connected to the center column (2), and the upper end of the center column (2) is hinged to the leveling shaft (6); the balancing mechanism includes a balancing hydraulic cylinder (7) and a vehicle body slot (8), the vehicle body slot (8) is fixed on the top surface of the flatbed truck (16), the lower end of the balancing hydraulic cylinder (7) is clamped to the vehicle body slot (8), and the upper end of the balancing hydraulic cylinder (7) is hinged to a balancing slider (9), and the balancing slider (9) is slidably clamped on the slide groove of the balancing arm (4).

3. The hoisting equipment for replacing long rails across a line according to claim 2, characterized in that: The center column (2) comprises a hoisting center column (2.1) and a vehicle-mounted center column (2.2). The vehicle-mounted center column (2.2) is fixed on a mobile platform. The hoisting center column (2.1) is installed inside the vehicle-mounted center column (2.2) and is coaxial with the vehicle-mounted center column (2.2). The hoisting center column (2.1) can rotate freely. A swivel driven gear (2.3) is coaxially installed on the hoisting center column (2.1). A torque output mechanism (2.4) is installed on the vehicle-mounted center column (2.2). A swivel driving gear (2.5) on the output end of the torque output mechanism (2.4) is engaged with the swivel driven gear (2.3). The hoisting center column (2.1) is hinged to the leveling shaft (6).

4. The hoisting equipment for replacing long rails across a line according to claim 3 is characterized in that: The mobile platform is provided with a vehicle body slot (8) installed in front and behind the center column (2). The vehicle body slot (8) is a double-horn structure with wide openings on both sides and narrowed inside. The narrowed inside portion of the vehicle body slot (8) fits with the lower end of the balancing hydraulic cylinder (7).

5. The hoisting equipment for replacing long rails across a line according to any one of claims 1 to 4, characterized in that: The mobile platform comprises a wheel box (1), the wheel box (1) comprises a wheel pair drive motor (1.2), a wheel box housing (1.3) and four rail wheels (1.1), the four rail wheels (1.1) are mounted on the wheel box housing (1.3) in pairs via axles, the wheel pair drive motor (1.2) is mounted on the wheel box housing (1.3), the wheel axles are divided into a driving wheel axle (1.4) and a driven wheel axle (1.5), the driving wheel axle (1.4) is mounted with a driven wheel axle (1.6). A driven bevel gear (1.6) and a driving sprocket (1.7) are mounted on a driven wheel shaft (1.5), a driven sprocket (1.8) is mounted on the driven wheel shaft (1.5), a chain (1.9) is connected between the driving sprocket (1.7) and the driven sprocket (1.8), a driving bevel gear (1.10) on a wheel pair driving motor (1.2) is meshed with the driven bevel gear (1.6), and four track wheels (1.1) of the wheel box (1) move on a slide rail (16.1) on the top surface of a flatbed car (16).

6. The hoisting equipment for replacing long rails across a line according to claim 5, characterized in that: The wheel box housing (1.3) is provided with an outwardly extending support plate (1.11), the bottom of the support plate (1.11) is provided with a fixed arm (1.12) via bolts, and the fixed arm (1.12) is supported on a flatbed vehicle (16).

7. The hoisting equipment for replacing long rails across a line according to claim 1, characterized in that: The top surface of the boom is provided with an insulating sulfide layer, a column end insulator (10) and a ring laser emitter (11) are provided above the middle column (2), the ring horizontal light beam of the ring laser emitter (11) is centered on the middle column (2), and the distance from the top of the column end insulator (10) to the contact network line is greater than 2 meters.

8. The hoisting equipment for replacing long rails across a line according to claim 1, characterized in that: The lifting arm (3) is provided with limiters (3.1) at the starting point and the end point of the hook runway.

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