Leveling height adjusting power walking device for high-speed rail box girder leveling machine

Abstract

The utility model discloses a leveling height adjusting power walking device for a high-speed rail box girder leveling machine, which belongs to the technical field of high-speed rail box girder leveling machines, and particularly structurally comprises a rack and a walking mechanism, the walking mechanism comprises a walking frame and walking wheels, the walking wheels are rotatably connected to the bottom of the walking frame, and the walking wheels are rotatably connected to the bottom of the walking frame. The walking wheels are connected with a power mechanism for driving the walking wheels to walk, and the walking frame is connected to the rack through a height adjusting device. The height of the machine frame is adjusted through the height adjusting device, large-size adjustment of the leveling height is achieved, adjustment is convenient, fast and easy, interference between the machine frame and embedded steel bars on the two sides of a to-be-leveled face is avoided after adjustment, width adjustment in the horizontal direction can be achieved, the machine frame can be directly matched with different rail widths, and the leveling efficiency is improved. The adjustment is simple.

Description

Technical Field

[0001] This utility model belongs to the technical field of high-speed railway box girder leveling machine, and relates to a power walking device for adjusting the leveling height of a high-speed railway box girder leveling machine. Background Technology

[0002] As a crucial component supporting high-speed railways, the box girder is prefabricated and then erected on the bridge using a bridge erecting machine. Afterward, concrete is laid on the upper surface of the box girder for leveling. The inventor of this invention uses a method of leveling concrete with a short roller in the middle and two extended rollers behind it. However, this method results in concrete leakage through the gap between the short and long rollers, causing concrete lines on the bridge surface after leveling, affecting the leveling effect. Furthermore, it requires manual secondary finishing, which is time-consuming and labor-intensive. To address this problem, the inventor designed an automatically walking leveling machine. However, during the construction process, it was found that the leveling machine could not adjust the leveling plane to different heights, limiting its application range and increasing its cost. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a power walking device for adjusting the leveling height of a high-speed railway box girder leveling machine, which can adapt to the height adjustment of different leveling surfaces, reduce costs, and expand the application range.

[0004] The technical solution adopted by this utility model is as follows: a power walking device for adjusting the leveling height of a high-speed railway box girder leveling machine, including a frame and a walking mechanism. The walking mechanism includes a walking frame and walking wheels. The walking wheels are rotatably connected to the bottom of the walking frame. The walking wheels are connected to a power mechanism that drives them to walk. The walking frame is connected to the frame through a height adjustment device.

[0005] Furthermore, the aforementioned height adjustment device includes a portal frame, sliding grooves, and lifting adjustment screws. The lower end of the portal frame is fixedly connected to the traveling frame via a flange plate. The uprights on both sides of the portal frame are movably inserted into two sliding grooves and fixedly connected to the frame via bolt one. A vertical strip-shaped through hole is provided on the upright at one of the connecting bolts. Each sliding groove is fixedly connected to the frame via two angle steels back to back by bolt two. A horizontal strip-shaped through hole is provided at the frame where bolt one and bolt two are connected. Two lifting adjustment screws are used, arranged front and back along the end of the frame. Each screw is rotatably connected to the top beam of the portal frame near the top via bearing seat three, and the lower part is screwed to the frame via a nut.

[0006] Furthermore, a rotating ring is fixedly connected to the top of the aforementioned lifting and adjusting screw.

[0007] Furthermore, the aforementioned power mechanism includes a travel motor, a travel belt drive mechanism, and a travel transmission chain mechanism. The travel transmission chain mechanism includes two driven sprockets, a transition sprocket, and a driving sprocket fixedly connected to the travel wheels. The two driven sprockets are connected to the transition sprockets, and the transition sprockets are connected to the driving sprockets, all via a double-row chain. The transition sprocket is rotatably connected to the travel frame via bearing seat five. The driving sprocket is fixedly connected to the transition drive shaft, which is rotatably connected to the travel frame via bearing seat six. The other end of the transition drive shaft is connected to the motor shaft of the travel motor via the travel belt drive mechanism. The travel motor is fixedly connected to the travel frame.

[0008] Furthermore, a shield is installed above the aforementioned walking motor and transition drive shaft.

[0009] Furthermore, a second shield is provided outside the driven sprocket and the transition sprocket. The second shield has a bent cross section and its length covers the outside of the driven sprocket and the transition sprocket. The second shield is fixedly connected to the traveling frame by two cantilever arms.

[0010] The beneficial effects of this utility model are as follows: Compared with the prior art, this utility model uses a rotating lifting adjustment screw, which rotates around three fixed points on the bearing seat. The nut at the lower end of the lifting adjustment screw is fixed to the frame. After the lifting adjustment screw rotates, it drives the nut to move up and down, thereby realizing the relative up and down movement of the frame and the gate frame. After adjustment, the bolt is tightened to realize the height adjustment of the frame, achieving a large-scale adjustment of the leveling height. The adjustment is convenient, quick, and easy. After adjustment, it also avoids interference between the frame and the pre-embedded steel bars on both sides of the surface to be leveled. Moreover, it can also be adjusted along the width in the horizontal direction, which can adapt to the direct matching of different track widths and is simple to adjust. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the rear view structure of a high-speed railway box girder leveling machine.

[0012] Figure 2 A schematic diagram showing the arrangement of the agitator roller, the first lifting roller, and the second lifting roller;

[0013] Figure 3 A schematic diagram of the lifting mechanism at the right end of the high-speed railway box girder leveling machine;

[0014] Figure 4 This is a schematic diagram of the front view of the lifting mechanism;

[0015] Figure 5 This is a schematic diagram of the right side of a high-speed railway box girder leveling machine (excluding the power unit of the lifting mechanism).

[0016] Figure 6 A schematic diagram of the power mechanism layout on the right side of the high-speed railway box girder leveling machine (view from the front).

[0017] Figure 7 This is a structural schematic diagram of a lifting bearing housing;

[0018] Figure 8 This is a schematic diagram of the second structure of the lifting bearing seat. Detailed Implementation

[0019] The utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1: As Figures 1-8As shown, a power-driven walking device for adjusting the leveling height of a high-speed railway box girder leveling machine includes a frame 1 and a walking mechanism 2. The walking mechanism 2 includes a walking frame 201 and walking wheels 202. The walking wheels 202 are rotatably connected to the bottom of the walking frame 201 and are connected to a power mechanism that drives them to move. The walking frame 201 is connected to the frame 1 and is equipped with a height adjustment device 203. Specifically, the height adjustment device 203 includes a portal frame 204, a sliding groove 205, and a lifting adjustment screw 206. The lower end of the portal frame 204 is fixedly connected to the walking frame 201 by a flange plate. The two side columns of the portal frame 204 are movably inserted into the two sliding grooves 205 and fixedly connected to the frame 1 by bolts 207. The column is provided with a vertical strip-shaped through hole 208. Each slide 205 is fixed to the frame 1 by two angle steels 209 through bolts 210, with the angle steels 209 facing each other. A horizontal strip-shaped through hole 211 is provided at the frame 1 connecting bolts 207 and 210. Two lifting adjustment screws 206 are provided, arranged front and back along the end of the frame 1 (i.e., left and right along the width of the frame). Each screw is rotatably connected to the top beam of the frame 204 near the top via bearing seat 212, and screwed to the frame 1 at the bottom via nuts 213. A rotating ring 219 is fixedly connected to the top of the lifting adjustment screw 206. By rotating the lifting adjustment screw, the lifting adjustment screw rotates around the bearing seat 212. The nut screwed to the bottom of the lifting adjustment screw is fixed to the frame. After the adjusting screw rotates, it drives the nut to move up and down, thereby realizing the relative up and down movement of the frame and the portal frame. After adjustment, the bolt is tightened to realize the height adjustment of the frame, achieving a large-scale adjustment of the leveling height. The adjustment is convenient, quick, and easy. After adjustment, it also avoids interference between the frame and the pre-embedded steel bars on both sides of the surface to be leveled. Moreover, it can also be adjusted along the width in the horizontal direction, which can adapt to the direct matching of different track widths. The adjustment is simple. The power mechanism includes a travel motor 214, a travel belt drive mechanism 215, and a travel drive chain mechanism 216. The travel drive chain mechanism 216 includes two driven sprockets 222, a transition sprocket 223, and a driving sprocket 224 fixedly connected to the travel wheel. The two driven sprockets 222 and the transition sprocket 223 are connected to the travel wheel. Both the transition sprocket 223 and the drive sprocket 224 are connected by a double-row chain drive. The transition sprocket 223 is rotatably connected to the traveling frame 201 via bearing seat five. The drive sprocket 224 is fixedly connected to the transition drive shaft 220. The transition drive shaft 220 is rotatably connected to the traveling frame 201 via bearing seat six 221. The other end of the transition drive shaft 220 is connected to the motor shaft of the traveling motor 214 via a traveling belt drive mechanism 215. The traveling motor 214 is fixedly connected to the traveling frame 201. This drive mechanism directly powers the two wheels to move through belt drive and secondary chain drive, achieving stable and reliable power drive. A shield 225 is installed above the traveling motor 214 and the transition drive shaft 220.This system serves to protect the motor and bearing housing, preventing rainwater or other concrete slurry from dripping or splashing into them, thus enhancing safety. A second shield 217 is installed outside the driven sprocket 222 and the transition sprocket 223. The second shield 217 has a bent cross-section, extending beyond the driven sprocket 222 and the transition sprocket 223. The second shield 217 is fixedly connected to the side of the traveling frame 201 via two cantilever arms 218. The second shield 217 effectively protects the driven sprocket 222 and the transition sprocket 223, preventing concrete slurry from splashing onto them.

[0021] Example 2: Figures 1-8 As shown, a high-speed railway box girder leveling machine includes a frame 1, a traveling mechanism 2, a stirring roller 3, a first lifting roller 4, and a second lifting roller 5. The traveling mechanism 2 is installed at both ends of the frame 1 and rests on two tracks 7 set on both sides of the box girder 6. The stirring roller 3, the first lifting roller 4, and the second lifting roller 5 are arranged from front to back at the bottom of the frame 1 and are each connected to a first transmission device, a second transmission device, and a third transmission device to drive their rotation. The first transmission device, the second transmission device, and the third transmission device are installed on the frame 1. The lowest point of the stirring roller 3, the first lifting roller 4, and the second lifting roller 5 is 1-2 cm lower than the height of the concrete to be leveled. By using the stirring roller to mix, spread, and level the material, the first lifting roller to perform rough leveling, and the third lifting roller to perform fine leveling, the leveling effect can be greatly improved, avoiding the appearance of traditional concrete ridges. No manual assistance is required, saving time and labor.

[0022] To achieve better leveling, symmetrical annular concave cone surfaces 8 are set in the middle of the first and second slurry rollers 4 and 5, with a slope of 2%. Annular convex cone surfaces 9 are set at both ends, with a smaller inner end and a larger outer end, and a slope of 3%. The annular concave cone surface structure in the middle of the first and second slurry rollers facilitates the compression of the concrete in the middle to both sides, making it more compact and forming a slope structure with a higher middle and lower sides. The annular convex cone surfaces at both ends facilitate the compaction and stability of the leveling area, and also prevent excessive outflow of slurry during the leveling process, which would lead to poor leveling effect on the sides. It can play a certain role in converging.

[0023] To meet the requirements of leveling, mixing and feeding, the length of the stirring roller 3 is 7m, and the length of the first lifting roller 4 and the second lifting roller 5 is 8.6m. To meet the requirements of the leveling area, the length of the middle annular concave cone surface 8 of the first lifting roller 4 and the second lifting roller 5 is 2m, the length of the straight section is 2.7m, and the length of the annular convex cone surface 9 at both ends is 0.5m.

[0024] To mitigate the problem of excessive bending of the mixing rollers during the mixing and material-following process, two mixing rollers 3 are used, rotatably connected side-by-side along the same horizontal axis to a lifting bearing seat 10 located at the bottom of the frame 1. Each mixing roller 3 has a lifting bearing seat 10 rotatably connected to both ends, and the lifting bearing seat 10 is fixedly connected to the frame 1. The power shaft at one end of each mixing roller 3 passes through the lifting bearing seat 10 and is connected to a first transmission device, which is installed at the outer end. The two mixing rollers 3 are equipped with opposing spiral material-following blades 301. The material-following blades can mix and guide the concrete, pushing the material in the middle to both sides, resulting in a uniform coverage thickness during leveling and facilitating leveling. Using two mixing rollers reduces the weight of the support points and the power of a single mixing roller, making it easier to control the mixing and material-following process. The use of lifting bearing seats facilitates fine-tuning of the mixing roller height, avoids inconsistent track installation levels in the traveling mechanism, adapts to different applications, reduces costs, lowers installation requirements, and improves installation efficiency.

[0025] Specifically, to facilitate the lifting and lowering of the lifting bearing seat 10, the lifting bearing seat 10 includes a portal frame 1001, a sliding square frame 1002, a bearing seat 1003, and a lifting screw 1004 with a rectangular thread. The bearing seat 1003 is inverted and fixedly connected to the bottom of the sliding square frame 1002. The sliding square frame 1002 is slidably placed in the sliding grooves on both sides of the portal frame 1001. The portal frame 1001 is fixedly connected to the frame 1. The lifting screw 1004 is screwed to the top crossbeam of the sliding square frame 1002. The lifting screw 1004 is rotatably connected to the center of the top horizontal beam of the portal frame 1001 near its upper end via a support bearing seat 1005. After this end extends out, a rotating handle 1006 is fixedly connected. By rotating the lifting screw, the lifting screw rotates relative to the bearing seat. The threaded part at the lower end drives the scriber frame 1 to move up and down along the slide groove, thereby fixing the bearing seat 1. A locking screw 1007 is provided on the side of the portal frame 1001. The locking screw 1 can lock the sliding frame 1 after it has slid, thereby improving reliability.

[0026] The frame 1 is a truss structure, which is fixed by connecting the two ends. The middle section protrudes downward to install the stirring roller, the first lifting roller and the second lifting roller and the transmission mechanism.

[0027] The first, second, and third transmission devices all include a drive motor 12, a belt drive mechanism 13, and a double-row chain drive mechanism 14. One end of the stirring roller 3, the first slurry lifting roller 4, and the second slurry lifting roller 5 is connected to a section of the transition shaft 15 via the chain drive mechanism 14. The transition shaft 15 is rotatably connected to the frame 1 via a bearing seat 16 and connected to the motor shaft of the drive motor 12 via a belt drive mechanism 13 with multiple belts at the other end. The drive motor 12 is fixedly connected to the frame 1. The second and third transmission devices are located near both ends of the frame 1, respectively. They use belt drive, which has low noise and facilitates rapid power transmission. The double-row chain improves transmission reliability. A splash guard 17 is installed on the outside of the chain drive mechanism 14 to prevent concrete slurry from splashing onto the chain and sprocket, thus providing protection.

[0028] To avoid excessive bending due to the excessive weight of a single roller, which would affect the leveling effect, both ends of the first lifting roller 4 and the second lifting roller 5 are rotatably connected to two sets of lifting bearing seats 11 at the bottom of the frame 1. The first lifting roller 4 and the second lifting roller 5 both adopt a coaxial two-section roller structure. The shaft of the separation point of the two rollers is rotatably connected to the frame 1 through the lifting bearing seats 11. The lifting bearing seats 11 are fixedly connected to the frame 1. The two sections of the first lifting roller 4 and the second lifting roller 5 are staggered at their disconnection points. The support points of a single lifting roller can effectively reduce the probability of excessive bending, and the staggered arrangement of the two lifting rollers results in a better leveling effect.

[0029] Specifically, the lifting bearing seat 2 11 includes a portal frame 2 1101, a sliding square frame 2 1102, a bearing seat 2 1103, and a lifting screw 2 1104. The bearing seat 2 1103 is inverted and fixedly connected to the bottom of the sliding square frame 2 1102. The sliding square frame 2 1102 is slidably placed in the sliding grooves on both sides of the portal frame 2 1101. The portal frame 2 1101 is fixedly connected to the frame 1. The lifting screw 2 1104 is spirally connected to the top crossbeam of the sliding square frame 2 1102. The lifting screw 2 1103... 4. Near the upper end, a second bearing seat 1105 is rotatably connected to the center of the top horizontal beam of the second portal frame 1101. A rotating handle 1106 is fixedly connected to this end after it extends out. By rotating the second lifting screw, the second lifting screw rotates relative to the second bearing seat. The threaded part at the lower end drives the second scribing frame to move up and down along the slide groove, thus fixing the first bearing seat. A locking screw 1107 is provided on the side of the second portal frame 1101. The locking screw 1 can lock the sliding frame 1 after it has slid, improving reliability.

[0030] For stable movement, the walking mechanism 2 includes a walking frame 201 and walking wheels 202. The walking wheels 202 are rotatably connected to the bottom of the walking frame 201 and are connected to a power mechanism that drives their movement. The walking frame 201 is connected to the frame 1 and is equipped with a height adjustment device 203. Specifically, the height adjustment device 203 includes a portal frame 204, a slide groove 205, and a lifting adjustment screw 206. The lower end of the portal frame 204 is fixedly connected to the walking frame 201 by a flange plate. The uprights on both sides of the portal frame 204 are movably inserted into two slide grooves 205 and fixedly connected to the frame 1 by bolts 207. The uprights at the bolts 207 are provided with vertical strip-shaped through holes 208. Each slide groove 205 uses two angle steels 209 connected by bolts 207. 10 is fixedly connected to the frame 1 with its back to the frame. A horizontal strip-shaped through hole 211 is provided at the frame 1 where connecting bolts 1 207 and 210 are connected. Two lifting adjustment screws 206 are used, arranged front and back along the end of the frame 1 (i.e., left and right along the width of the frame). Each screw is rotatably connected to the top beam of the frame 204 near the top via bearing seat 3 212, and screwed to the frame 1 at the bottom via nuts 213. A rotating ring 219 is fixedly connected to the top of the lifting adjustment screw 206. By rotating the lifting adjustment screw, the lifting adjustment screw rotates around the bearing seat 3 fixed point. The nut screwed to the lower end of the lifting adjustment screw is fixed to the frame. After the lifting adjustment screw rotates, it drives the nut to move up and down, thereby realizing the relative up and down movement of the frame and the frame. After adjustment, the screw is connected to the frame 204. Once the bolts are tightened, the frame height can be adjusted, allowing for large-scale adjustment of the leveling height. Adjustment is convenient, quick, and easy, avoiding interference between the frame and the pre-embedded reinforcing bars on both sides of the surface to be leveled. It can also be adjusted horizontally to accommodate different track widths. The power mechanism includes a travel motor 214, a travel belt drive mechanism 215, and a travel drive chain mechanism 216. The travel drive chain mechanism 216 includes two driven sprockets 222, a transition sprocket 223, and a driving sprocket 224 fixedly connected to the travel wheels. The driven sprockets 222 and the transition sprocket 223, as well as the transition sprocket 223 and the driving sprocket 224, are connected by a double-row chain drive. The transition sprocket 223... The drive sprocket 224 is fixedly connected to the transition drive shaft 220 via bearing housing 5, which is rotatably connected to the traveling frame 201. The transition drive shaft 220 is rotatably connected to the traveling frame 201 via bearing housing 6. The other end of the transition drive shaft 220 is connected to the motor shaft of the traveling motor 214 via the traveling belt drive mechanism 215. The traveling motor 214 is fixedly connected to the traveling frame 201. This drive mechanism directly powers the two wheels to move through belt drive and secondary chain drive, achieving stable and reliable power drive. A shield 225 is installed above the traveling motor 214 and the transition drive shaft 220 to protect the motor and bearing housing 6, preventing rainwater or other concrete slurry from dripping or splashing into the motor or bearing housing.For enhanced safety, a second shield 217 is installed outside the driven sprocket 222 and the transition sprocket 223. The second shield 217 has a bent cross-section, its length extending beyond the driven sprocket 222 and the transition sprocket 223. The second shield 217 is fixedly connected to the side of the traveling frame 201 via two cantilever arms 218. The second shield 217 effectively protects the driven sprocket 222 and the transition sprocket 223, preventing concrete slurry from splashing onto the sprockets.

[0031] The specific steps for operating a high-speed railway box girder leveling machine are as follows:

[0032] (1) The high-speed railway box girder leveling machine is installed at the starting point of the box girder to be leveled;

[0033] (2) Spray the required amount of concrete onto the top of the box girder to be poured. Spread the concrete after spraying, and make sure the concrete is 1-2 cm higher than the surface to be leveled.

[0034] (3) Start the high-speed railway box girder leveling machine to travel at a speed of 0.1 m / s; and achieve the leveling of the top surface of the box girder while meeting the efficiency requirements.

[0035] (4) The front stirring rollers stir and push the material, the first lifting rollers coarsely level, and the second lifting rollers finely level;

[0036] (5) After the high-speed rail box girder leveling machine completes its one-way travel, it travels in the opposite direction back to the starting point to complete the laying of concrete on the top of the box girder. It moves back and forth in one cycle, which can avoid the problem of not being able to level the disconnected point.

[0037] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A power-driven walking device for adjusting the leveling height of a high-speed railway box girder leveling machine, characterized in that, It includes a frame (1) and a walking mechanism (2). The walking mechanism (2) includes a walking frame (201) and a walking wheel (202). The walking wheel (202) is rotatably connected to the bottom of the walking frame (201). The walking wheel (202) is connected to a power mechanism that drives it to walk. The walking frame (201) is connected to the frame (1) through a height adjustment device (203).

2. The leveling height adjustment power walking device for a high-speed railway box girder leveling machine according to claim 1, characterized in that, The height adjustment device (203) includes a portal frame (204), a slide rail (205), and a lifting adjustment screw (206). The lower end of the portal frame (204) is fixedly connected to the traveling frame (201) via a flange plate. The uprights on both sides of the portal frame (204) are movably inserted into two slide rails (205) and fixedly connected to the frame (1) via bolts (207). The uprights at the bolts (207) are provided with vertical strip-shaped through holes (208). Each slide rail ( 205) Two angle steels (209) are fixedly connected to the frame (1) back to back by bolts (210). A horizontal strip-shaped through hole (211) is provided at the frame (1) where bolts (207) and bolts (210) are connected. Two lifting adjustment screws (206) are used. Each screw is rotated to the top beam of the door frame (204) near the top end through bearing seat (212), and the lower part is screwed to the frame (1) through nuts (213).

3. The leveling height adjustment power walking device for a high-speed railway box girder leveling machine according to claim 2, characterized in that, A rotating ring (219) is fixedly connected to the top of the lifting adjustment screw (206).

4. The leveling height adjustment power walking device for a high-speed railway box girder leveling machine according to claim 2, characterized in that, The power mechanism includes a walking motor (214), a walking belt drive mechanism (215), and a walking transmission chain mechanism (216). The walking transmission chain mechanism (216) includes two driven sprockets (222) fixedly connected to the walking wheels, a transition sprocket (223), and a driving sprocket (224). The two driven sprockets (222) are connected to the transition sprockets (223), and the transition sprockets (223) are connected to the driving sprockets (224) via a double-row chain drive. The transition sprocket (223) is rotatably connected to the walking frame (201) through bearing seat five. The drive sprocket (224) is fixedly connected to the transition drive shaft (220). The transition drive shaft (220) is rotatably connected to the walking frame (201) through bearing seat six (221). The other end of the transition drive shaft (220) is connected to the motor shaft of the walking motor (214) through the walking belt drive mechanism (215). The walking motor (214) is fixedly connected to the walking frame (201).

5. A power-driven walking device for adjusting the leveling height of a high-speed railway box girder leveling machine according to claim 4, characterized in that, A shield (225) is installed above the walking motor (214) and the transition drive shaft (220).

6. A power-driven walking device for adjusting the leveling height of a high-speed railway box girder leveling machine according to claim 4, characterized in that, A second shield (217) is provided outside the driven sprocket (222) and the transition sprocket (223). The second shield (217) has a bent cross section and its length covers the outside of the driven sprocket (222) and the transition sprocket (223). The second shield (217) is fixedly connected to the traveling frame (201) by two cantilever arms (218).

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