1. A concrete vibrating leveling machine for a railway precast box girder comprises a main framework, a traveling mechanism, an adjustable vibrating mechanism, an adjustable leveling mechanism and an electric cabinet; the main frame adopts the rectangle truss, running gear is including locating the door type frame at truss both ends, locate walking wheel, drive mechanism and the walking inverter motor of door type frame bottom, its characterized in that: the travelling wheels fall on tracks on two sides of the top of a pouring pedestal of the railway precast box girder, the truss stretches across the railway precast box girder, the adjustable vibrating mechanism is provided with a plurality of the travelling wheels along one side of the truss, and the adjustable vibrating mechanism comprises a vibrating rod motor, a cantilever truss connector, a vibrating rod, a vertical moving electric cylinder and a horizontal moving electric cylinder; the cantilever truss connector comprises a connecting plate and a rotary drum which are fixed on one side of the truss, a mandrel is arranged in the rotary drum, bearing seats are arranged at the upper end and the lower end of the connecting plate, two ends of the mandrel are arranged in the bearing seats, the vibrating rod is arranged at one end of the cantilever, the other end of the cantilever is hinged with the outer wall of the rotary drum, and the output end of the vibrating rod motor is connected with the top end of the vibrating rod through a transmission hose; one end of the vertical moving electric cylinder is fixed on the outer wall of the rotary drum, and the extending end of the piston rod at the other end is connected with the cantilever; one end of the horizontal movement electric cylinder is fixed on one side of the truss, and the extending end of the piston rod at the other end is connected with the outer wall of the rotary drum.

2. A vibrating leveler for concrete of a railway precast box girder according to claim 1, wherein: the adjustable leveling mechanism is located the bottom of main skeleton and divide two sets of symmetrical arrangement along the main skeleton, every group comprises flattening regulating wheel, flattening rod, flattening roller motor and lifting support, the parallel crisscross section that overlaps that is formed with of flattening rod separately of two sets of adjustable leveling mechanism.

3. The vibrating and leveling integrated machine for concrete of a railway precast box girder according to claim 1 or 2, characterized in that: the two ends of the truss are respectively provided with a lifting support, sliding grooves are formed on the inner sides of the vertical frames on the two sides of the portal frame, and the two sides of the lifting support are embedded into the sliding grooves; a screw rod is arranged at the top of the lifting bracket in a penetrating way; one end of the screw rod is fixed to the top of the portal frame, the other end of the screw rod is in threaded connection with the thread driver, and the thread driver and the fixing seat of the thread driver are fixed to the two vertical inner side walls of the lifting support.

4. A vibrating leveler for concrete of a railway precast box girder according to claim 3, wherein: the vibration rod is fixed at one end of the cantilever through a hoop, the other end of the cantilever is hinged with the cantilever connecting seat plate, one end of the vertical moving electric cylinder is connected with the vertical connecting seat plate, and the extending end of a piston rod at the other end is connected with one square pipe of the cantilever; one end of the horizontal movement electric cylinder is fixed on the seat plate on one side of the truss, and the extending end of the piston rod on the other end of the horizontal movement electric cylinder is connected with the horizontal connection seat plate.

5. A vibrating leveler for concrete of a railway precast box girder according to claim 4, wherein: the transverse chord members, the longitudinal chord members, the vertical rods and the inclined struts of the truss are formed by welding square pipes, and steel plates are laid on the top of the truss.

Background

In recent years, the construction of high-speed railways in China is in the gold development period. Taking 2019 as an example, the bridge occupies 45.2% of the length of the newly-built high-speed railway, wherein the standard span simply-supported bridge occupies more than 90% of the length of the whole bridge. Under the working deployment of the national 'modernization level of the supply chain of the industry chain' promotion, the construction of projects such as reinforcing steel bars, prestress and the like of the railway precast box girder realizes high intellectualization and mechanization. However, in the case beam concrete engineering, due to the limitation of timeliness of concrete construction, the conventional construction adopts a mode of intensive personnel operation, the construction quality is greatly influenced by construction operators, the personnel investment is large, the construction efficiency is low, and the quality control is difficult.

For this reason, large casting machines for box girder concrete have emerged. For example, the chinese patent application with publication number CN111996916A discloses an integrated construction equipment for cast-in-place box girder and a construction method thereof, and the patent application generally provides a steel bar processing workshop, a movable formwork for providing a pouring template, a material distribution system, a tamping system and a surface collecting system. However, the tamping frame of the tamping system is arranged on the crane and completes the tamping process through the crane, specifically, the crane is lifted to enable the tamping rod to be inserted into the gap of the reinforcing steel bars to complete the vibration of the top plate concrete, and the vibration of the web plate and the bottom plate is still completed manually. Obviously, for such a large concrete project as the railway precast box girder, it is not enough to complete the vibration of the top surface portion of the concrete by a single vibrating rod for the crane to lift, the stroke thereof is also single and has no angular variation, the vibration of the concrete of the railway precast box girder can not be performed in a full area and a full depth, and thus the whole quality of the concrete of the railway precast box girder can not be ensured.

In addition, most of the known concrete vibration can only vibrate the shallow layer of the top surface part of the concrete, and only can vibrate concrete with smaller area at the same time, such as a small vibrator used for paving concrete on a road surface.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the vibration of the whole area and the effective depth formed by pouring the concrete of the large-scale railway precast box girder is realized, and the concrete of various specifications is leveled.

The technical scheme provided by the invention for solving the technical problems is as follows: a concrete vibrating leveling machine for a railway precast box girder comprises a main framework, a traveling mechanism, an adjustable vibrating mechanism, an adjustable leveling mechanism and an electric cabinet; the main framework adopts a rectangular truss, the travelling mechanism comprises door-shaped frames arranged at two ends of the truss, travelling wheels arranged at the bottom of the door-shaped frames, a transmission mechanism and a travelling variable frequency motor, the travelling wheels fall on tracks on two sides of the top of a pouring pedestal of the railway precast box girder, the truss stretches across the railway precast box girder, a plurality of adjustable vibrating mechanisms are arranged along one side of the truss, and each adjustable vibrating mechanism comprises a vibrating rod motor, a cantilever truss connector, a vibrating rod, a vertical moving electric cylinder and a horizontal moving electric cylinder; the cantilever truss connector comprises a connecting plate and a rotary drum which are fixed on one side of the truss, a mandrel is arranged in the rotary drum, bearing seats are arranged at the upper end and the lower end of the connecting plate, two ends of the mandrel are arranged in the bearing seats, the vibrating rod is arranged at one end of the cantilever, the other end of the cantilever is hinged with the outer wall of the rotary drum, and the output end of the vibrating rod motor is connected with the top end of the vibrating rod through a transmission hose; one end of the vertical moving electric cylinder is fixed on the outer wall of the rotary drum, and the extending end of the piston rod at the other end is connected with the cantilever; one end of the horizontal movement electric cylinder is fixed on one side of the truss, and the extending end of the piston rod at the other end is connected with the outer wall of the rotary drum.

Further, adjustable leveling mechanism be located the bottom of main skeleton divide two sets of symmetrical arrangement along the main skeleton, every group comprises flattening regulating wheel, flattening rod, flattening roller motor and lifting support, and two sets of adjustable leveling mechanism's flattening rod parallel crisscross overlapping section separately.

Furthermore, two ends of the truss are respectively manufactured into a lifting support, sliding grooves are formed in the inner sides of the vertical frames on two sides of the portal frame, and two sides of the lifting support are embedded into the sliding grooves; a screw rod is arranged at the top of the lifting bracket in a penetrating way; one end of the screw rod is fixed to the top of the portal frame, the other end of the screw rod is in threaded connection with the thread driver, and the thread driver and the fixing seat of the thread driver are fixed to the two vertical inner side walls of the lifting support.

Further, the cantilever is composed of two parallel square tubes, a vertical connecting seat plate, a horizontal connecting seat plate and a cantilever connecting seat plate are fixedly arranged on the outer wall of the rotary drum, the vibrating rod is fixed at one end of the cantilever through a hoop, the other end of the cantilever is hinged with the cantilever connecting seat plate, one end of the vertical moving electric cylinder is connected with the vertical connecting seat plate, and the extending end of the piston rod at the other end is connected with one square tube of the cantilever; one end of the horizontal movement electric cylinder is fixed on the seat plate on one side of the truss, and the extending end of the piston rod on the other end of the horizontal movement electric cylinder is connected with the horizontal connection seat plate.

Furthermore, the transverse chord members, the longitudinal chord members, the vertical rods and the inclined struts of the truss are formed by welding square pipes, and steel plates are laid on the top of the truss.

The concrete vibrating and leveling machine for the railway precast box girder has the beneficial effects that: because the adjustable mechanism that vibrates of unique design can form the horizontal arc line of formation removal in little circumference vibration, the upper and lower arc line removal in the vertical plane and the horizontal plane, including the rectilinear movement of vibration evener, consequently can form the vibration of abundant total area and effective degree of depth to the concrete and cover. Because the adjustable leveling mechanism of unique design can make the flattening roller have the slope again, can adjust the whole height of flattening roller in addition lifting support, consequently can pour the concrete of different kinds of specifications to the railway box girder and carry out the adaptability flattening.

Drawings

The concrete vibrating and leveling machine for the railway precast box girder of the present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic view showing the overall construction of a concrete vibratory screed for a precast box girder of a railway according to an embodiment.

Fig. 2 is a schematic structural view of a single adjustable tamper mechanism exploded from fig. 1.

Figure 3 is a schematic view of a portion of the screed mechanism of figure 1.

Fig. 4 is a partial structural view of the traveling mechanism shown in fig. 1.

Detailed Description

Examples

The concrete vibrating and leveling machine for the railway precast box girder of the embodiment comprises a main framework 1, a traveling mechanism 2, an adjustable vibrating mechanism 3, an adjustable leveling mechanism 4 and an electric cabinet 5, as shown in fig. 1. The main framework 1 is a rectangular truss which stretches across a railway prefabricated box girder, transverse chord members, longitudinal chord members, upright rods and inclined struts of the truss are formed by welding square tubes, and two lifting lugs 1-1 are welded at the top of the truss and used for lifting the truss. The traveling mechanism 2 comprises door-shaped frames 2-1 arranged at two ends of the truss, traveling wheels 2-4 arranged at the bottom of the door-shaped frames 2-1, a transmission mechanism and traveling variable frequency motors 2-2, the transmission mechanism adopts chain sprockets 2-3, and the traveling wheels 2-4 fall on rails on two sides of the top of a pouring pedestal of the railway prefabricated box girder; the walking variable frequency motor is fixed on a support at the bottom of the portal frame 2-1.

The adjustable vibrating mechanism 3 is provided with a plurality of vibrating mechanisms along one side of a truss crossing a railway precast box girder, the single adjustable vibrating mechanism 3 is shown in figure 2, and the adjustable vibrating mechanism 3 comprises a vibrating rod motor 3-1, a cantilever 3-4, a cantilever truss connector, a vibrating rod 3-3, a vertical moving electric cylinder 3-6 and a horizontal moving electric cylinder 3-5. The cantilever 3-4 of this embodiment is formed by two parallel square tubes. The truss connector comprises a connecting plate 3-12 and a rotary drum 3-8, wherein the connecting plate 3-12 and the rotary drum 3-8 are fixed to one side of a truss, a mandrel is arranged in the rotary drum 3-8, bearing seats are arranged at the upper end and the lower end of the connecting plate 3-12, and two ends of the mandrel are arranged in the bearing seats. The outer wall of the rotary drum 3-8 is fixedly provided with a vertical connecting seat plate 3-9, a horizontal connecting seat plate 3-10 and a cantilever connecting seat plate 3-11, a vibrating rod 3-3 is arranged at one end of a cantilever 3-4 and is fixed through a hoop 3-7, the other end of the cantilever 3-4 is hinged with the cantilever connecting seat plate 3-11 on the outer wall of the rotary drum 3-8, and the output end of a vibrating rod motor 3-1 is connected with the top end of the vibrating rod 3-3 through a transmission hose 3-2. One end of the vertical moving electric cylinder 3-6 is connected with a vertical connecting seat plate 3-9 on the outer wall of the rotary drum 3-8, and the extending end of the piston rod at the other end of the vertical moving electric cylinder 3-6 is connected with a square pipe (or a square pipe below) positioned above the cantilever 3-4. One end of the horizontal moving electric cylinder 3-5 is fixed on the seat plate 3-13 at one side of the truss, and the extending end of the piston rod at the other end of the horizontal moving electric cylinder 3-5 is connected with the horizontal connecting seat plate 3-10 at the outer wall of the rotary drum 3-8.

When the device is used, the cantilever 3-4 and the vibrating rod 3-3 at one end of the cantilever can form up-and-down arc line movement in a vertical plane by vertically moving the piston rod of the electric cylinder 3-6 to stretch, and the vibrating rod 3-3 can be inserted into concrete poured into a railway box girder or pulled out of the concrete poured into the railway box girder. When the vibrating rod 3-3 is inserted into concrete poured into a railway precast box girder, the piston rod of the vertically moving electric cylinder 3-6 stops stretching, an eccentric vibrator is arranged in a vibrating rod motor 3-1, and the vibrating rod motor 3-1 enables the vibrating rod 3-3 to generate high-frequency micro-amplitude circumferential vibration through a transmission hose 3-2; at the moment, the piston rod of the horizontally moving electric cylinder 3-5 stretches out and draws back to enable the rotary drum 3-8 to rotate and drive the cantilever 3-4 and the vibrating rod 3-3 at one end of the cantilever to form horizontal arc line movement in the horizontal plane, and the vibrating rod 3-3 can form vibration in a section of arc line in concrete poured by the railway precast box girder. Meanwhile, the running mechanism 2 is started to drive the whole vibrating and leveling machine to move linearly, the vibrating rods 3-3 can form multi-section connected arc line internal vibration in concrete poured by the railway box girder, and a plum blossom-shaped vibrating track can be formed on the concrete in actual construction, so that full-area and full-depth vibrating coverage is formed on the concrete.

As shown in fig. 3, the adjustable leveling mechanism 4 is located at the bottom of the main frame 1 and symmetrically arranged in two groups along the main frame 1, and comprises two leveling adjusting wheels 4-1, two leveling rollers 4-2 and two leveling roller motors 4-3; the two groups of two leveling rollers 4-2 are oppositely staggered in parallel to form an overlapping section, and the length of the overlapping section is generally one third to one fourth of the length of the leveling roller 4-2, so that the concrete on the beam surface of the railway precast box is completely leveled. The leveling adjusting wheel 4-1 is fixed on the truss of the main framework 1, one end of the leveling adjusting wheel 4-1 is connected with the end of the leveling roller 4-2, and the height of one end of the leveling roller 4-2 can be adjusted by rotating the leveling adjusting wheel 4-1; the other end of the leveling roller 4-2 is connected with the output end of a leveling roller motor 4-3 through a chain; the leveling roller motor 4-3 is fixed on the truss of the main framework 1.

As shown in fig. 4, the two ends of the truss of the main frame 1 are both provided with a lifting support 4-4, sliding grooves are formed on the inner sides of the vertical frames at the two sides of the portal frame 2-1, and the two sides of the lifting support 4-4 are embedded into the sliding grooves. A screw rod 4-5 is arranged at the top of the lifting bracket 4-4 in a penetrating way; one end of a screw rod 4-5 is fixed on the top of the portal frame 2-1, the other end is in threaded connection with a thread driver 4-6, and the thread driver 4-6 and a fixed seat thereof are fixed on two vertical inner side walls of the lifting support 4-4. The lifting support 4-4 and the door type frame 2-1 are both made of channel steel.

When in use, 1) the height of one end of the leveling roller 4-2 can be adjusted by adjusting the leveling adjusting wheel 4-1, so that the leveling roller 4-2 has a gradient; 2) the overall height of the levelling roll 4-2 can be adjusted by adjusting the screw 4-5 at the top of the lifting bracket 4-4. Therefore, the method can carry out adaptive leveling on the concrete poured by the railway precast box girder with different types and specifications.

The electric cabinet 5 comprises a programmable controller and can respectively control the walking variable frequency motor 2-2, the vibrating rod motor 3-1, the horizontal moving electric cylinder 3-5, the vertical moving electric cylinder 3-6 and the leveling roller motor 4-3.

The electric cabinet 5 controls the running variable frequency motor 2-2 to start, and the power is transmitted to the running wheels 2-4 at the bottom of the portal frame 2-1 through the transmission chains 2-3 to drive the portal frame 2-1 and the whole vibrating leveling machine to run back and forth along the tracks at the two sides of the top of the railway precast box girder pouring pedestal.

The above description is only for the preferred embodiment of the present invention, but the present invention is not limited thereto, for example: 1) the lifting mechanism 3 may have other configurations than the above-described embodiment; 2) the structure of the main truss may be other structures than the above-described embodiments and the illustrated structures; 3) the cantilever 3-4 can also be formed by one or three or more square tubes or round tubes, etc.; 4) other modes can also be adopted for the hinging of the rotary drums 3-8 and the cantilevers 3-4 and the hinging of the rotary drums 3-8 and the electric cylinders 3-5 and 3-6 respectively; and so on. All equivalents and modifications of the inventive concept and its technical solutions are intended to be included within the scope of the present invention.