Railway bridge ballastless track bed concrete distributing vehicle

Abstract

The invention discloses a railway bridge ballastless track bed concrete distributing vehicle, and relates to the technical field of railway bridge paving, the railway bridge ballastless track bed concrete distributing vehicle comprises a vehicle body, a distributing unit, a stirring unit and an exhaust unit, the vehicle body is used for installing and fixing the distributing unit, the stirring unit and the exhaust unit, and the distributing unit is used for conveying concrete. The stirring unit is used for uniformly stirring the concrete, the exhaust unit is used for vibrating and exhausting the laid concrete, and when the vehicle body moves to a laying area, the concrete in the hopper is uniformly overtime through the stirring unit, so that the situation that the quality of the concrete is influenced due to non-uniform composition and segregation of the concrete during laying is avoided; when the concrete is laid in a railway bridge laying area, air holes in the concrete are exhausted through the exhaust unit, the compactness of the concrete is improved, and therefore laying and exhaust are conducted synchronously while the laying quality of the concrete is improved, and the overall laying efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of railway bridge paving, in particular to a railway bridge ballastless track bed concrete placing vehicle. Background Art

[0002] With the rapid development of railway transportation, higher requirements are put forward for the stability, smoothness and durability of railway lines. As an important part of railway tracks, the quality of ballastless trackbed of railway bridges is directly related to the safety and comfort of train operation. Ballastless trackbed needs to be laid with high-quality concrete to ensure the strength, rigidity and stability of the trackbed. In the traditional construction of ballastless trackbed concrete of railway bridges, it is usually adopted to mix concrete first, then transport the mixed concrete to the construction site, and then lay and vibrate. There are some problems with this construction method. Traditional concrete mixing equipment often cannot ensure the full and uniform mixing of concrete, and it is easy to have uneven distribution of cement, sand and gravel, etc., which affects the quality of concrete. The processes of mixing, transportation, laying and vibrating are carried out separately, which requires a lot of time and manpower, and the construction efficiency is low. Especially in the large-scale ballastless trackbed construction of railway bridges, this inefficient construction method is difficult to meet the requirements of the project progress. Since mixing and vibrating cannot be carried out at the same time, concrete is prone to segregation and water seepage during transportation and laying, which affects the density and strength of concrete.

[0003] In order to improve the construction quality and efficiency of ballastless track beds for railway bridges, the market urgently needs a new type of concrete placing vehicle that can achieve uniform mixing of concrete and simultaneous mixing and vibrating of concrete. This type of concrete placing vehicle can mix and lay concrete directly on the construction site, and vibrate during the laying process, ensuring the quality and density of concrete, improving construction efficiency, and shortening the construction period. Summary of the invention

[0004] The purpose of the present invention is to provide a railway bridge ballastless track concrete placing vehicle to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] The concrete placing vehicle for ballastless track bed of railway bridge comprises a vehicle body, a placing unit, a mixing unit and an exhaust unit. The vehicle body is placed on a horizontal foundation. The placing unit is fixedly connected to the vehicle body. The mixing unit is fixedly installed on a side of the placing unit away from the horizontal foundation. The mixing unit is fixedly installed on an end surface of the vehicle body away from the horizontal foundation. The exhaust unit is fixedly connected to the mixing unit. The exhaust unit is installed on a side of the placing unit away from the horizontal foundation. The exhaust unit is fixedly connected to the vehicle body. The exhaust unit has the function of improving the mixing effect of the mixing unit.

[0007] The car body is used for the installation and fixation of the distribution unit, the mixing unit and the exhaust unit. The distribution unit is used for the transportation of concrete, the mixing unit is used for the uniform mixing of concrete, and the exhaust unit is used for the vibration exhaust of the laid concrete. When the car body moves to the laying area, the concrete in the hopper is evenly mixed through the mixing unit to avoid uneven composition of the concrete during laying, segregation and affecting the quality of the concrete. When the concrete is laid in the railway bridge laying area, the pores inside the concrete are discharged through the exhaust unit to improve the density of the concrete, thereby jointly improving the laying quality of the concrete. At the same time, laying and exhaust are carried out simultaneously to improve the overall laying efficiency.

[0008] Furthermore, the material distribution unit includes a motor 1, a conveying pipe, a spiral auger, a nozzle and a support rod. The motor 1 is fixedly installed inside the vehicle body through the support rod. One end of the conveying pipe is fixedly connected to the fixed end of the motor 1, and the other end extends out of the vehicle body and is fixedly connected to the nozzle. The spiral auger is installed inside the conveying pipe, and one end of the spiral auger is fixedly connected to the output end of the motor 1. The conveying pipe is provided with a feeding port fixedly connected to the stirring unit on the side away from the horizontal foundation.

[0009] When the mixed material enters the conveying pipe from the discharge port of the hopper, the controller controls the motor to start, thereby driving the spiral auger to rotate, transporting the concrete inside the conveying pipe to the nozzle for spraying, thereby laying concrete in the area to be laid.

[0010] Furthermore, the stirring unit includes a hopper, a second motor, a rocker arm, a rotating drum, a stirring rod, a stirring plate, a push rod, a cleaning block, a torsion spring, a moving block, a traction rope, a counterweight block, a magnet 1 and a buffer spring. The hopper discharge port is fixedly connected to the conveying pipe, the second motor fixed end is fixedly mounted on the upper surface of the hopper end cover, the second motor output end is fixedly connected to one end of the rocker arm through a round rod, the other end of the rocker arm is fixedly mounted on the inner wall of the rotating drum away from the horizontal foundation, the end of the rotating drum close to the horizontal foundation passes through the conveying pipe and is fixedly connected to the exhaust unit, one end of the stirring rod is fixedly connected to the rotating drum, and the other end is connected to the stirring plate through a torsion spring. One end of the rotating cylinder is slidably connected to one end of the push rod, and the other end of the push rod is fixedly connected to the cleaning block, the cleaning block is slidably connected to the hopper, and the cleaning block is always in contact with the inner wall of the hopper. The interior of the stirring rod close to the push rod is a hollow structure, and the movable block is installed inside the stirring plate, and the movable block is slidably installed inside the stirring rod. One end of the movable block is fixedly connected to the inner wall of the stirring rod through a buffer spring, and the other end is fixedly connected to the counterweight block through a traction rope. A slide groove is provided inside the stirring plate, and the counterweight block is slidably installed in the slide groove inside the stirring plate. The magnet is fixedly installed on the inner wall of the stirring plate away from the stirring rod, and the counterweight block is made of iron.

[0011] Furthermore, the exhaust unit includes an installation box, an electromagnet, a straight rod 1, a straight rod 2, a vibration plate, a magnet 2 and a mounting plate, the installation box is fixedly installed on a side of the conveying pipe close to the horizontal foundation, the electromagnet is sleeved on the outer surface of the rotating cylinder, the electromagnet is rotatably installed on one end of the mounting plate close to the horizontal foundation, one end of the straight rod 1 is rotatably connected to the electromagnet through a round rod, and the other end is rotatably connected to one end of the straight rod 2 through a round rod, the straight rod 1 is electrically connected to the electromagnet, the straight rod 1 is fixedly connected to the rotating cylinder through a telescopic spring, and the other end of the straight rod 2 is rotatably connected to the vibration plate through a round rod, the vibration plate is fixedly installed on the end of the rotating cylinder close to the horizontal foundation, the material of the vibration plate is a magnetic block, there are two magnets 2, and the two magnets 2 are symmetrically fixedly installed on the inner wall of the installation box parallel to the vertical axis with the rotating cylinder as the center axis, the mounting plate is sleeved on the outer surface of the rotating cylinder, and the end of the mounting plate away from the horizontal foundation is fixedly connected to the inner surface of the installation box away from the horizontal foundation.

[0012] When concrete enters the hopper from the inlet of the hopper, the controller controls the motor 2 to start, and the rotating drum is driven to rotate under the transmission action of the swing rod, so that the stirring rod and the stirring plate are rotated to evenly stir the concrete inside the hopper to avoid the uneven concrete causing segregation, which will affect the paving quality. The mixed concrete enters the conveying pipe from the outlet of the hopper. During the rotation of the rotating drum, the vibration plate is driven to rotate synchronously, so that under the transmission action of the straight rod 2, the straight rod 1 and the electromagnet are driven to rotate synchronously. During the rotation of the straight rod 1, the magnetic flux lines generated by the two magnets 2 are cut, thereby generating in the straight rod 1 The current is transmitted to the electromagnet, and the electromagnet is energized to present the same polarity as the vibration plate. At this time, the electromagnet pushes the vibration plate to drive the pendulum rod to rotate downward, thereby moving the rotating cylinder downward. At this time, the two straight rods 1 compress the telescopic spring under the downward pulling force of the straight rod 2, and the angle between the two straight rods 1 gradually decreases. At the same time, the cleaning block moves downward along the inner wall of the hopper during rotation, thereby cleaning the inner wall of the hopper to prevent concrete lumps from adhering to the inner wall of the hopper. On the other hand, the cleaning block pushes the push rod to squeeze the moving block and compress the buffer spring. During the movement of the moving block, the traction rope pulls the counterweight block to overcome the attraction of magnet 1 and moves along the slide groove in the mixing plate. The stirring plate moves to the right. At this time, the pressure of the counterweight on the left side of the stirring plate gradually decreases. The stirring plate rotates forward around the stirring rod under the action of the restoring force of the torsion spring, thereby pushing the concrete below the hopper upward to improve the mixing uniformity of the concrete. When the angle between the straight rods 1 gradually decreases, the magnetic flux lines cut by the straight rod 1 gradually decrease. At this time, the current delivered to the electromagnet also gradually decreases, and the magnetic force generated by the electromagnet gradually decreases. Under the action of the restoring force of the telescopic spring, the angle between the straight rods 1 gradually increases, and the straight rod 2 is pulled to drive the vibration plate to push the rotating cylinder upward, so that the vibration plate completes the up and down reciprocating motion to lay the concrete below. Good concrete is fully exhausted to improve the density of concrete, thereby improving the laying quality. When the rotating cylinder moves upward, the cleaning block slides upward along the inner wall of the hopper, and the moving block is pushed to extrude the push rod to extend the stirring rod under the action of the buffer spring's own restoring force. At the same time, the counterweight block contacts magnet one again under the attraction of magnet one, so that the stirring plate compresses the torsion spring and rotates in the opposite direction around the stirring rod to push the upper concrete downward, so that concrete at different levels is evenly mixed, the uniformity of concrete is improved, and the laying quality of concrete is improved. The simultaneous mixing and exhaust of concrete further improves the laying efficiency of concrete.

[0013] Furthermore, the stirring rod and the push rod are always located on the same axis.

[0014] In order to facilitate the up and down movement of the rotating drum, the cleaning block is driven to push the push rod to extend and retract in the mixing rod, thereby squeezing or releasing the moving block, pulling the counterweight block to change its position in the mixing plate, and making the mixing plate swing, so as to evenly mix the concrete at different layers in the hopper, thereby improving the mixing uniformity of the concrete and improving the paving quality.

[0015] Furthermore, a circular through hole for the traction rope to pass through is provided on the side surface of the stirring rod close to one end of the push rod.

[0016] The circular through hole is designed to enable the moving block to pull the traction rope during the movement of the mixing rod, so that the mixing plate can swing when the traction rope pulls the counterweight block to move, so as to fully mix the concrete and improve the mixing uniformity.

[0017] Furthermore, the two ends of the two magnets that are close to each other have opposite polarities.

[0018] In order to generate magnetic flux lines between the two magnets, the magnetic flux lines are cut during the rotation of the straight rod to generate current, so that the electromagnet pushes the vibration plate to move up and down, and the laid concrete is vibrated to exhaust air. This improves the compactness of the concrete laying and drives the rotating drum to move up and down, thereby evenly mixing the concrete.

[0019] Furthermore, the initial angle of the stirring plate with the vertical axis is 30 degrees, the direction is horizontal and downward, and the maximum angle of the stirring plate to rotate upward around the stirring rod is 45 degrees.

[0020] In order to make the counterweight block unbalance the mixing plate on both sides of the mixing rod during the movement of the mixing plate, the mixing plate is allowed to swing under the action of the torsion spring, and the mixing plate is allowed to swing itself during the rotation process to evenly mix different layers of concrete, thereby improving the uniformity of concrete mixing and preventing the counterweight block from flipping over too large an angle and being unable to reset, resulting in the mixing plate being unable to rotate and affecting the mixing effect.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The present invention rotates the rotating drum in the stirring unit, thereby rotating the stirring rod and the stirring plate, and uniformly stirring the concrete inside the hopper to avoid the occurrence of segregation caused by uneven concrete, which will affect the paving quality.

[0023] 2. On the one hand, the cleaning block moves downward along the inner wall of the hopper during its rotation, thereby cleaning the inner wall of the hopper to prevent concrete lumps from adhering to the inner wall of the hopper. On the other hand, the cleaning block pushes the push rod to push the moving block to move. The traction rope pulls the counterweight block to overcome the attraction of magnet 1, change its position in the mixing plate, and cooperates with the torsion spring to make the mixing rod rotate in the forward and reverse directions, so that the concrete at different layers in the hopper is evenly mixed, the mixing uniformity of the concrete is improved, and the laying quality of the concrete is improved. The mixing and exhaust of the concrete are carried out simultaneously to further improve the laying efficiency of the concrete.

[0024] 3. During the rotation of the rotating drum, the present invention drives the vibration plate to rotate synchronously through the exhaust unit. During the rotation of the straight rod one, the magnetic flux lines generated by the magnet two are cut, and the generated current is transmitted to the electromagnet. At this time, the magnetism of the electromagnet changes according to the angle between the straight rods one. The electromagnet is energized to present a constantly changing magnetic force, which pushes the vibration plate to reciprocate up and down, fully exhausts the concrete laid below, improves the density of the concrete, and thus improves the laying quality. The laying efficiency of the concrete is further improved by operating the halving unit and the exhaust unit at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall appearance structure of a railway bridge ballastless track concrete placing vehicle of the present invention;

[0026] Figure 2 It is a schematic diagram of the side view structure of a railway bridge ballastless track concrete placing vehicle of the present invention;

[0027] Figure 3 A concrete placing vehicle for a ballastless track bed of a railway bridge according to the present invention Figure 2 Schematic diagram of the cross-section structure at AA;

[0028] Figure 4 This is a schematic diagram of the structure of a mixing unit of a concrete placing vehicle for a ballastless track bed of a railway bridge according to the present invention;

[0029] Figure 5 This is a schematic diagram of the installation position structure of a stirring plate and a stirring rod of a concrete placing vehicle for a ballastless track bed of a railway bridge according to the present invention;

[0030] Figure 6 This is a schematic diagram of the internal structure of a mixing plate of a concrete placing vehicle for a ballastless track bed of a railway bridge according to the present invention;

[0031] Figure 7 A concrete placing vehicle for a ballastless track bed of a railway bridge according to the present invention Figure 6 The structural schematic diagram of the partial enlarged view at B in the middle;

[0032] Figure 8It is a schematic diagram of the installation position structure of the motor 2, the swing arm and the rotating cylinder of a concrete placing vehicle for a ballastless track of a railway bridge according to the present invention;

[0033] Fig. 9 The present invention is a schematic diagram of the internal structure of an installation box of a concrete placing vehicle for a ballastless track bed of a railway bridge.

[0034] In the figure: 1. body; 2. cloth unit; 21. motor 1; 22. conveying pipe; 23. auger; 24. nozzle; 25. support rod; 3. stirring unit; 31. hopper; 32. motor 2; 33. swing rod; 34. rotating cylinder; 35. stirring rod; 36. stirring plate; 37. push rod; 38. cleaning block; 39. torsion spring; 310. moving block; 311. traction rope; 312. counterweight; 313. magnet 1; 314. buffer spring; 4. exhaust unit; 41. installation box; 42. electromagnet; 43. straight rod 1; 44. straight rod 2; 45. vibration plate; 46. magnet 2; 47. installation plate. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example: Figure 1-Figure 8 As shown, the present invention provides a technical solution:

[0037] like Figure 1 , 2 As shown, a concrete placing vehicle for a ballastless track bed of a railway bridge comprises a vehicle body 1, a placing unit 2, a mixing unit 3 and an exhaust unit 4. The vehicle body 1 is placed on a horizontal foundation, the placing unit 2 is fixedly connected to the vehicle body 1, the mixing unit 3 is fixedly mounted on a side of the placing unit 2 away from the horizontal foundation, the mixing unit 3 is fixedly mounted on an end surface of the vehicle body 1 away from the horizontal foundation, the exhaust unit 4 is fixedly connected to the mixing unit 3, the exhaust unit 4 is mounted on a side of the placing unit 2 away from the horizontal foundation, the exhaust unit 4 is fixedly connected to the vehicle body 1, and the exhaust unit 4 has a function of improving the mixing effect of the mixing unit 3.

[0038] The vehicle body 1 is used for installing and fixing the distribution unit 2, the mixing unit 3 and the exhaust unit 4. The distribution unit 2 is used for conveying concrete, the mixing unit 3 is used for uniformly mixing the concrete, and the exhaust unit 4 is used for vibrating and exhausting the laid concrete. When the vehicle body 1 moves to the laying area, the concrete in the hopper 31 is evenly mixed through the mixing unit 3 to avoid uneven composition of the concrete during laying, segregation, and affecting the quality of the concrete. When the concrete is laid in the railway bridge laying area, the pores in the concrete are discharged through the exhaust unit 4 to improve the density of the concrete, thereby jointly improving the laying quality of the concrete. At the same time, laying and exhaust are carried out simultaneously to improve the overall laying efficiency.

[0039] like Figure 3 As shown, the material distribution unit 2 includes a motor 21, a conveying pipe 22, a spiral auger 23, a nozzle 24 and a support rod 25. The motor 21 is fixedly installed inside the vehicle body 1 through the support rod 25. One end of the conveying pipe 22 is fixedly connected to the fixed end of the motor 21, and the other end extends out of the vehicle body 1 and is fixedly connected to the nozzle 24. The spiral auger 23 is installed inside the conveying pipe 22, and one end of the spiral auger 23 is fixedly connected to the output end of the motor 21. The conveying pipe 22 is provided with a feeding port fixedly connected to the stirring unit 3 on the side away from the horizontal foundation.

[0040] When the mixed material enters the conveying pipe 22 from the discharge port of the hopper 31, the controller controls the motor 21 to start, thereby driving the spiral auger 23 to rotate, and the concrete in the conveying pipe 22 is transported to the nozzle 24 for spraying, so as to lay the concrete in the area to be laid.

[0041] like Figure 4 , 5As shown in , 6, 7, and 8, the stirring unit 3 includes a hopper 31, a motor 2 32, a swing rod 33, a rotating cylinder 34, a stirring rod 35, a stirring plate 36, a push rod 37, a cleaning block 38, a torsion spring 39, a moving block 310, a traction rope 311, a counterweight 312, a magnet 1 313 and a buffer spring 314. The discharge port of the hopper 31 is fixedly connected to the conveying pipe 22, the fixed end of the motor 2 32 is fixedly mounted on the upper surface of the end cover of the hopper 31, the output end of the motor 2 32 is fixedly connected to one end of the swing rod 33 through a round rod, and the other end of the swing rod 33 is fixedly mounted on the inner wall of the rotating cylinder 34 away from the horizontal foundation. The end of the rotating cylinder 34 close to the horizontal foundation passes through the conveying pipe 22 and is fixedly connected to the exhaust unit 4. One end of the stirring rod 35 is fixedly connected to the rotating cylinder 34, and the other end is connected to the stirring plate 36 through a torsion spring 39. The end of the stirring plate 36 away from the rotating cylinder 34 is slidably connected to one end of the push rod 37, and the other end of the push rod 37 is fixedly connected to the cleaning block 38. The cleaning block 38 is slidably connected to the hopper 31, and the cleaning block 38 is always in contact with the inner wall of the hopper 31. The interior of the stirring rod 35 close to the push rod 37 is a hollow structure. The moving block 310 is installed inside the stirring plate 36, and the moving block 310 is slidably installed inside the stirring rod 35. One end of the moving block 310 is fixedly connected to the inner wall of the stirring rod 35 through a buffer spring 314, and the other end is fixedly connected to the counterweight block 312 through a traction rope 311. A slide groove is opened inside the stirring plate 36, and the counterweight block 312 is slidably installed in the slide groove inside the stirring plate 36. A magnet 313 is fixedly installed on the inner wall of the stirring plate 36 away from the stirring rod 35, and the counterweight block 312 is made of iron.

[0042] like Fig. 9 As shown, the exhaust unit 4 includes an installation box 41, an electromagnet 42, a straight rod 1 43, a straight rod 2 44, a vibration plate 45, a magnet 2 46 and a mounting plate 47. The installation box 41 is fixedly installed on the side of the conveying pipe 22 close to the horizontal foundation. The electromagnet 42 is sleeved on the outer surface of the rotating cylinder 34. The electromagnet 42 is rotatably installed on the mounting plate 47 close to one end of the horizontal foundation. One end of the straight rod 1 43 is rotatably connected to the electromagnet 42 through a round rod, and the other end is rotatably connected to one end of the straight rod 2 44 through a round rod. The straight rod 1 43 is electrically connected to the electromagnet 42. The straight rod 1 44 is electrically connected to the electromagnet 42. The second straight rod 44 is fixedly connected with the rotating cylinder 34 through a telescopic spring, and the other end of the straight rod 44 is rotatably connected with the vibration plate 45 through a round rod. The vibration plate 45 is fixedly installed at the end of the rotating cylinder 34 close to the horizontal foundation. The material of the vibration plate 45 is a magnetic block. There are two second magnets 46. The two second magnets 46 are fixedly installed on the inner wall of the installation box 41 parallel to the vertical axis with the rotating cylinder 34 as the center axis. The installation plate 47 is sleeved on the outer surface of the rotating cylinder 34, and the end of the installation plate 47 away from the horizontal foundation is fixedly connected to the inner surface of the end of the installation box 41 away from the horizontal foundation.

[0043] When concrete enters the hopper 31 from the inlet of the hopper 31, the controller controls the motor 2 32 to start, and the rotating drum 34 is driven to rotate under the transmission action of the swing rod 33, so that the stirring rod 35 and the stirring plate 36 are rotated, and the concrete inside the hopper 31 is evenly stirred to avoid the uneven concrete causing segregation, which will affect the paving quality. The mixed concrete enters the conveying pipe 22 from the outlet of the hopper 31. During the rotation of the rotating drum 34, the vibration plate 45 is driven to rotate synchronously, so that the straight rod 1 43 and the electromagnet 42 are driven to rotate synchronously under the transmission action of the straight rod 2 44. During the rotation of the straight rod 1 43, the magnetic flux lines generated by the two magnets 2 46 are cut, thereby generating an electric current in the straight rod 1 43. The flow is delivered to the electromagnet 42. The electromagnet 42 is energized to present the same polarity as the vibration plate 45. At this time, the electromagnet 42 pushes the vibration plate 45 to drive the swing rod 33 to rotate downward, so that the rotating cylinder 34 moves downward. At this time, the two straight rods 1 43 compress the telescopic spring under the downward pulling force of the straight rod 2 44, and the angle between the two straight rods 1 43 gradually decreases. At the same time, the cleaning block 38 moves downward along the inner wall of the hopper 31 during the rotation process, thereby cleaning the inner wall of the hopper 31 to prevent concrete lumps from adhering to the inner wall of the hopper 31. On the other hand, the cleaning block 38 pushes the push rod 37 to squeeze the moving block 310 and compress the buffer spring 314. During the movement of the moving block 310, the traction rope 311 pulls the counterweight block 312 to overcome the attraction of the magnet 1 313 , moves to the right along the slide groove in the stirring plate 36. At this time, the pressure of the counterweight block 312 on the left side of the stirring plate 36 gradually decreases, and the stirring plate 36 rotates forward around the stirring rod 35 under the action of the restoring force of the torsion spring 39, thereby pushing the concrete below the hopper 31 upward to improve the mixing uniformity of the concrete. When the angle between the straight rods 1 and 43 gradually decreases, the magnetic flux lines cut by the straight rods 1 and 43 gradually decrease. At this time, the current delivered to the electromagnet 42 also gradually decreases, and the magnetic force generated by the electromagnet 42 gradually decreases. Under the action of the restoring force of the telescopic spring, the angle between the straight rods 1 and 43 is gradually increased, and the straight rod 2 44 is pulled to drive the vibration plate 45 to push the rotating cylinder 34 upward, so that the vibration plate 45 completes the up and down reciprocating movement When the rotating cylinder 34 moves upward, the concrete laid below is fully exhausted, the density of the concrete is improved, and thus the laying quality is improved. When the rotating cylinder 34 moves upward, the cleaning block 38 slides upward along the inner wall of the hopper 31, and the moving block 310 is pushed to squeeze the push rod 37 to extend the stirring rod 35 under the action of the restoring force of the buffer spring 314 itself. At the same time, the counterweight block 312 contacts the magnet 313 again under the attraction of the magnet 313, so that the stirring plate 36 compresses the torsion spring 39 and rotates in the opposite direction around the stirring rod 35 to push the upper concrete downward, so that the concrete at different layers is evenly mixed, the uniformity of the concrete is improved, and the laying quality of the concrete is improved. The mixing and exhausting of the concrete are carried out simultaneously to further improve the laying efficiency of the concrete.

[0044] like Figure 6 As shown, the stirring rod 35 and the push rod 37 are always located on the same axis.

[0045] In order to facilitate the up and down movement of the rotating cylinder 34, the cleaning block 38 is driven to push the push rod 37 to extend and retract in the stirring rod 35, thereby squeezing or releasing the moving block 310, pulling the counterweight block 312 to change its position in the stirring plate 36, and making the stirring plate 36 swing, so as to evenly mix the concrete of different layers in the hopper 31, thereby improving the mixing uniformity of the concrete and improving the paving quality.

[0046] like Figure 7 As shown, a circular through hole for the traction rope 311 to pass through is formed on the side surface of one end of the stirring rod 35 close to the push rod 37.

[0047] The circular through hole is designed to enable the moving block 310 to pull the traction rope 311 during the movement in the stirring rod 35, so that the stirring plate 36 can swing when the traction rope 311 pulls the counterweight block 312 to move, so as to fully stir the concrete and improve the mixing uniformity.

[0048] like Fig. 9 As shown, the two ends of the two magnets 46 close to each other have opposite polarities.

[0049] In order to generate magnetic flux lines between magnet 2 46, the magnetic flux lines are cut during the rotation of straight rod 1 43 to generate current so that electromagnet 42 pushes vibration plate 45 to move up and down, thereby performing exhaust vibration on the laid concrete, improving the compactness of the concrete laying, and driving rotating cylinder 34 to move up and down, thereby evenly mixing the concrete.

[0050] like Figure 5 As shown, the initial angle of the stirring plate 36 with the vertical axis is 30 degrees, the direction is horizontal and downward, and the maximum angle of the stirring plate 36 rotating upward around the stirring rod 35 is 45 degrees.

[0051] In order to make the counterweight 312 unbalance the stirring plate 36 on both sides of the stirring rod 35 during the movement of the stirring plate 36, the stirring plate 36 is swung under the action of the torsion spring 39, and the stirring plate 36 swings itself during the rotation to evenly mix different layers of concrete, thereby improving the uniformity of concrete mixing and preventing the counterweight 312 from flipping over too large an angle and being unable to reset, causing the stirring plate 36 to be unable to rotate, thereby affecting the mixing effect.

[0052] Working principle of the present invention:

[0053] When concrete enters the hopper 31 from the inlet of the hopper 31, the controller controls the motor 2 32 to start, and the rotating drum 34 is driven to rotate under the transmission action of the swing rod 33, so that the stirring rod 35 and the stirring plate 36 are rotated, and the concrete inside the hopper 31 is evenly stirred to avoid the uneven concrete causing segregation, which will affect the paving quality. The mixed concrete enters the conveying pipe 22 from the discharge port of the hopper 31, and the controller controls the motor 1 21 to start, thereby driving the spiral auger 23 to rotate, and the concrete inside the conveying pipe 22 is transported to the nozzle 24 for spraying, so as to lay the concrete in the paving area. During the rotation of the rotating drum 34, the vibration plate 45 is driven to rotate synchronously, so that the vibration plate 45 on the straight rod 24 4 drives the straight rod 1 43 and the electromagnet 42 to rotate synchronously. During the rotation of the straight rod 1 43, the magnetic flux lines generated by the two magnets 2 46 are cut, thereby generating current in the straight rod 1 43 and transmitting it to the electromagnet 42. The electromagnet 42 is energized to present the same polarity as the vibration plate 45. At this time, the electromagnet 42 pushes the vibration plate 45 to drive the swing rod 33 to rotate downward, thereby causing the rotating cylinder 34 to move downward. At this time, the two straight rods 1 43 compress the telescopic spring under the downward pulling force of the straight rod 2 44, and the angle between the two straight rods 1 43 gradually decreases. At the same time, the cleaning block 38 moves downward along the inner wall of the hopper 31 during the rotation, thereby cleaning the inner wall of the hopper 31 to prevent concrete lumps from adhering to the inner wall of the hopper 31. On the other hand, the cleaning block 38 pushes the push rod 3 7 squeezes the moving block 310 and compresses the buffer spring 314. During the movement of the moving block 310, the traction rope 311 pulls the counterweight block 312 to overcome the attraction of the magnet 313 and moves to the right along the slide groove in the stirring plate 36. At this time, the pressure of the counterweight block 312 on the left side of the stirring plate 36 gradually decreases. The stirring plate 36 rotates forward around the stirring rod 35 under the action of the restoring force of the torsion spring 39, thereby pushing the concrete at the bottom of the hopper 31 upward to improve the mixing uniformity of the concrete. When the angle between the straight rod 43 gradually decreases, the magnetic flux lines cut by the straight rod 43 gradually decrease. At this time, the current delivered to the electromagnet 42 also gradually decreases, and the magnetic force generated by the electromagnet 42 gradually decreases. The straight rod is pushed under the action of the restoring force of the telescopic spring. The angle between the two ends 43 gradually increases, and the straight rod 44 is pulled to drive the vibration plate 45 to push the rotating cylinder 34 to move upward, so that the vibration plate 45 completes the up and down reciprocating motion, and the concrete laid below is fully exhausted, the density of the concrete is improved, and thus the laying quality is improved. When the rotating cylinder 34 moves upward, the cleaning block 38 slides upward along the inner wall of the hopper 31, and the moving block 310 is pushed to squeeze the push rod 37 to extend the stirring rod 35 under the action of the restoring force of the buffer spring 314 itself. At the same time, the counterweight block 312 contacts the magnet 313 again under the attraction of the magnet 313, so that the stirring plate 36 compresses the torsion spring 39 and rotates in the opposite direction around the stirring rod 35 to push the upper concrete downward, so that the concrete at different levels is evenly mixed.Improve the uniformity of concrete and the quality of concrete laying, while the mixing and exhausting of concrete at the same time further improve the efficiency of concrete laying.

[0054] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A railway bridge ballastless track concrete placing vehicle, characterized in that: A concrete placing vehicle for a ballastless track bed of a railway bridge comprises a vehicle body (1), a placing unit (2), a mixing unit (3) and an exhaust unit (4); the vehicle body (1) is placed on a horizontal foundation; the placing unit (2) is fixedly connected to the vehicle body (1); the mixing unit (3) is fixedly mounted on a side of the placing unit (2) away from the horizontal foundation; the mixing unit (3) is fixedly mounted on an end surface of the vehicle body (1) away from the horizontal foundation; the exhaust unit (4) is fixedly connected to the mixing unit (3); the exhaust unit (4) is mounted on a side of the placing unit (2) away from the horizontal foundation; the exhaust unit (4) is fixedly connected to the vehicle body (1); and the exhaust unit (4) has the function of improving the mixing effect of the mixing unit (3).

2. The railway bridge ballastless track concrete placing vehicle according to claim 1, characterized in that: The material distribution unit (2) comprises a motor (21), a conveying pipe (22), a spiral auger (23), a nozzle (24) and a support rod (25); the motor (21) is fixedly mounted inside the vehicle body (1) via the support rod (25); one end of the conveying pipe (22) is fixedly connected to the fixed end of the motor (21); the other end extends out of the vehicle body (1) and is fixedly connected to the nozzle (24); the spiral auger (23) is mounted inside the conveying pipe (22); one end of the spiral auger (23) is fixedly connected to the output end of the motor (21); and a feeding port fixedly connected to the stirring unit (3) is provided on a side of the conveying pipe (22) away from the horizontal base.

3. The railway bridge ballastless track concrete placing vehicle according to claim 2, characterized in that: The stirring unit (3) comprises a hopper (31), a second motor (32), a swing rod (33), a rotating cylinder (34), a stirring rod (35), a stirring plate (36), a push rod (37), a cleaning block (38), a torsion spring (39), a moving block (310), a traction rope (311), a counterweight (312), a first magnet (313) and a buffer spring (314); the discharge port of the hopper (31) is fixedly connected to the conveying pipe (22); the fixed end of the second motor (32) is fixedly mounted on The upper surface of the end cover of the hopper (31), the output end of the motor 2 (32) is fixedly connected to one end of the swing rod (33) through a round rod, the other end of the swing rod (33) is fixedly installed on the inner wall of the end of the rotating cylinder (34) away from the horizontal foundation, the end of the rotating cylinder (34) close to the horizontal foundation passes through the conveying pipe (22) and is fixedly connected to the exhaust unit (4), one end of the stirring rod (35) is fixedly connected to the rotating cylinder (34), and the other end is connected to the stirring plate (36) through a torsion spring (39), and the stirring plate (36) is slidably connected to one end of a push rod (37) away from the rotating cylinder (34), and the other end of the push rod (37) is fixedly connected to a cleaning block (38), and the cleaning block (38) is slidably connected to the hopper (31), and the cleaning block (38) is always in contact with the inner wall of the hopper (31). The end of the stirring rod (35) close to the push rod (37) is a hollow structure, and the moving block (310) is installed inside the stirring plate (36). The moving block (310) is slidably installed on the stirring rod ( 35), one end of the moving block (310) is fixedly connected to the inner wall of the stirring rod (35) through a buffer spring (314), and the other end is fixedly connected to the counterweight (312) through a traction rope (311), a sliding groove is provided inside the stirring plate (36), and the counterweight (312) is slidably installed in the sliding groove inside the stirring plate (36), and the magnet one (313) is fixedly installed on the inner wall of one end of the stirring plate (36) away from the stirring rod (35), and the counterweight (312) is made of iron.

4. The railway bridge ballastless track concrete placing vehicle according to claim 3, characterized in that: The exhaust unit (4) comprises an installation box (41), an electromagnet (42), a straight rod (43), a straight rod (44), a vibration plate (45), a magnet (46) and an installation plate (47). The installation box (41) is fixedly installed on a side of the conveying pipe (22) close to the horizontal foundation. The electromagnet (42) is sleeved on the outer surface of the rotating cylinder (34). The electromagnet (42) is rotatably installed on one end of the installation plate (47) close to the horizontal foundation. One end of the straight rod (43) is rotatably connected to the electromagnet (42) through a round rod, and the other end is rotatably connected to one end of the straight rod (44) through a round rod. The straight rod (43) is electrically connected to the electromagnet (42). The first (43) is fixedly connected to the rotating cylinder (34) through a telescopic spring, and the other end of the straight rod second (44) is rotatably connected to the vibration plate (45) through a round rod. The vibration plate (45) is fixedly installed at the end of the rotating cylinder (34) close to the horizontal foundation. The material of the vibration plate (45) is a magnetic block. There are two magnets (46). The two magnets (46) are fixedly installed on the inner wall of the installation box (41) parallel to the vertical axis with the rotating cylinder (34) as the center axis. The installation plate (47) is sleeved on the outer surface of the rotating cylinder (34), and the installation plate (47) is fixedly connected to the inner surface of the installation box (41) at one end away from the horizontal foundation.

5. The railway bridge ballastless track concrete placing vehicle according to claim 3, characterized in that: The stirring rod (35) and the push rod (37) are always located on the same axis.

6. The railway bridge ballastless track concrete placing vehicle according to claim 3, characterized in that: A circular through hole for the traction rope (311) to pass through is formed on the side surface of one end of the stirring rod (35) close to the push rod (37).

7. The railway bridge ballastless track concrete placing vehicle according to claim 4, characterized in that: The two ends of the two magnets 2 (46) close to each other have opposite polarities.

8. The railway bridge ballastless track concrete placing vehicle according to claim 3, characterized in that: The initial angle between the stirring plate (36) and the vertical axis is 30 degrees, and the stirring plate (36) is directed horizontally downward. The maximum angle of the stirring plate (36) rotating upward around the stirring rod (35) is 45 degrees.

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