Concrete production equipment for simply supported beam of prestressed concrete railway bridge

Abstract

The invention relates to the technical field of concrete production equipment, in particular to concrete production equipment for a simply supported beam of a prestressed concrete railway bridge, which comprises a stirrer, a protective cover, a fixed rod and the like, a feed opening is formed in the stirrer; a discharge hole is formed in the rear side of the stirrer; a protective cover for shielding dust is mounted on the stirrer; and a plurality of fixing rods are movably arranged in the stirrer. Cement bags are fixed through the claw hooks, then a cutter is controlled to cut the cement bags on a bearing plate, then the bearing plate is turned over to enable notches of the cement bags to face downwards, dumping of the cement bags is achieved, the cement bags do not need to be dragged manually for a long time, the manual workload is reduced, meanwhile, raised dust is shielded and blocked through a protective cover, and the dust removal efficiency is improved. Workers are prevented from being in direct contact with cement dust, the workers are prevented from inhaling a large amount of cement dust, and therefore the risk that the workers are infected with pneumoconiosis is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of concrete production equipment, in particular to concrete production equipment for a prestressed concrete railway bridge simply supported beam. Background Art

[0002] During the loading process of the existing open concrete mixer, it is usually necessary to manually move the heavy cement bag to the upper side of the concrete mixer, then cut an incision in the cement bag, and pour the cement from the bag into the mixer through the incision. During the pouring process, a large amount of dust will be generated. Although the operator wears protective equipment such as masks, some of the dust will still be inhaled by the human body. If this continues for a long time, it will lead to pulmonary fibrosis and cause pneumoconiosis. At the same time, due to the cohesive force between cements, it is difficult to pour cement from the bag, so it is necessary to manually shake the cement bag back and forth, which is not only inefficient, but also will increase the burden on human joints in the long run, and even cause damage to the operator's elbow and wrist, seriously affecting physical health. Summary of the invention

[0003] In order to overcome the disadvantage that in the existing open concrete mixer, during the loading process, cement bags need to be shaken back and forth manually to pour out the cement, which is not only inefficient, but also will increase the burden on human joints and even cause damage to the operator's elbow and wrist in the long run, seriously affecting the health of the body, the present invention provides a concrete production equipment for prestressed concrete railway bridge simply supported beams.

[0004] The technical solution of the present invention is: a concrete production equipment for simply supported beams of prestressed concrete railway bridges, comprising a mixer, a protective cover and a fixed rod; a feed discharge port is provided on the mixer; a discharge port is provided on the rear side of the mixer; a protective cover for shielding dust is installed on the mixer; a plurality of fixed rods are movably arranged in the mixer; it also comprises a translation component, a supporting plate, a first rotating component, a second rotating component, a grab hook, a cutter and a straight spray head; a translation component is installed in the protective cover, and each fixed rod is connected to the translation component; a supporting plate for placing cement bags is commonly provided between two adjacent fixed rods; a first rotating component is installed in the protective cover, and each fixed rod is connected to the first rotating component; a second rotating component is installed on the supporting plate; a plurality of grab hooks are provided on the second rotating component; a cutter for cutting cement bags is provided in the protective cover; a plurality of straight spray heads are installed in the protective cover, and the straight spray heads are connected to an external water pump.

[0005] Furthermore, the feed opening of the mixer is arranged in an inverted truncated cone shape.

[0006] Furthermore, the cutter is configured to be in an arc shape.

[0007] Furthermore, the cutter is made of heat-conducting material and is connected to an external heating device.

[0008] Furthermore, it also includes an inclined nozzle; a plurality of inclined nozzles are fixedly connected to the protective cover, and the inclined nozzles are all facing the inclined surface of the discharge port.

[0009] Furthermore, it also includes an electric roller; the supporting plate is composed of two connecting plates, and the two connecting plates are rotatably connected by a connecting shaft; a plurality of curved strips are arranged between adjacent fixed rods; a connecting part is arranged on each connecting plate of the supporting plate; a plurality of electric rollers are fixedly connected to the front and rear ends of each connecting part, and the electric rollers roll on adjacent curved strips; and the upper and lower adjacent electric rollers are movably connected by an elastic telescopic block.

[0010] Furthermore, it also includes protrusions; each curved bar is provided with a plurality of protrusions for assisting the cement bag to shake.

[0011] Furthermore, each bump is made of rubber.

[0012] Furthermore, it also includes airbags; a plurality of rubber layers are arranged on the supporting plate; a plurality of airbags are fixedly connected to the bottom of the supporting plate, and adjacent airbags are interconnected; each airbag is located at the lower side of an adjacent rubber layer.

[0013] Furthermore, it also includes connecting rings and limiting plates; a plurality of connecting rings are installed on the second rotating assembly; a limiting plate for preventing the cement bag from getting stuck is fixedly connected between adjacent connecting rings; a plurality of limiting holes are arranged on each limiting plate, and each grab hook is located in an adjacent limiting hole.

[0014] Beneficial effects: The present invention fixes the cement bag by means of a grab hook, then controls the cutter to cut the cement bag on the support plate, and then turns the support plate over so that the cut of the cement bag faces downward, thereby realizing the dumping of the cement bag. It is unnecessary to manually drag the cement bag for a long time, thereby reducing the manual workload. At the same time, the protective cover is used to shield and block the raised dust, thereby preventing the workers from direct contact with the cement dust and avoiding the workers from inhaling a large amount of cement dust, thereby reducing the risk of the workers being infected with pneumoconiosis.

[0015] The electric rollers drive the left and right connecting parts to move closer to the middle of the supporting plate, so that the supporting plate is V-shaped and squeezes the cement bag below, so that the inverted cement bag is pulled by the left and right sides, expanding the incision on the cement bag and changing the distribution state of cement in the cement bag, thereby improving the fluidity of cement and making it easier to flow out from the incision, thereby improving the cement outflow efficiency;

[0016] The convex block blocks the electric roller during movement, so that the electric roller drives the cement bag on the supporting plate to shake up and down, preventing the cement from being blocked when flowing out of the incision. At the same time, the shaking ensures that the cement in the cement bag is fully poured out, reducing residue and avoiding waste.

[0017] The airbag squeezes the adjacent rubber layers, causing the rubber layers to squeeze the cement bag, thereby destroying the cohesive force between the cement particles inside the cement bag and breaking the connection between the cement particles, thereby improving the fluidity of the cement, reducing the difficulty of pouring the cement, and improving work efficiency;

[0018] The empty cement bag wound on the grab hook is squeezed and blocked by the limit plate, so that the empty cement bag is separated from the grab hook, the separation effect of the empty cement bag and the grab hook is improved, and the empty cement bag is prevented from affecting the feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the concrete production equipment for the prestressed concrete railway bridge simply supported beam of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the fixing rod, the supporting plate and the straight spray head combination of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the support plate, the grab hook and the cutter assembly of the present invention;

[0022] Figure 4 It is a schematic diagram of the combined three-dimensional structure of the fixing rod and the supporting plate of the present invention;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the fixing rod, the supporting plate and the grab hook combination of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the airbag of the present invention;

[0025] Figure 7 It is a schematic diagram of the combined three-dimensional structure of the connecting ring and the limiting plate of the present invention.

[0026] In the accompanying drawings: 1-mixer, 1001-feeding port, 1002-discharging port, 2-protective cover, 2001-baffle, 2002-top cover, 3-fixing rod, 3001-bend bar, 4-support plate, 4001-connecting part, 4002-rubber layer, 5-catch hook, 6-cutter, 7-straight nozzle, 8-cement bag, 9-oblique nozzle, 101-electric slide rail, 102-fixing block, 201-rack, 202-gear, 301-fixing seat, 302-connecting rod, 303-motor, 401-electric roller, 402-bump, 501-airbag, 502-connecting ring, 503-limiting plate, 50301-limiting hole. DETAILED DESCRIPTION

[0027] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present application and are not limited to the scope of the present application. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0028] Example 1

[0029] A concrete production equipment for prestressed concrete railway bridge simply supported beams, such as Figure 1-Figure 5 As shown, it includes a mixer 1, a protective cover 2 and a fixing rod 3; a feed port 1001 is provided on the mixer 1; a discharge port 1002 is provided at the rear side of the mixer 1; a protective cover 2 is installed on the mixer 1; two fixing rods 3 are movably provided in the mixer 1 that are symmetrical on both sides;

[0030] It also includes a translation component, a supporting plate 4, a first rotating component, a second rotating component, a grab hook 5, a cutter 6 and a straight nozzle 7; a translation component is installed in the protective cover 2, and each fixed rod 3 is connected to the translation component, and the fixed rod 3 is driven to move forward and backward by the translation component; a supporting plate 4 is commonly arranged between two adjacent fixed rods 3; a first rotating component is installed in the protective cover 2, and each fixed rod 3 is connected to the first rotating component, and the fixed rod 3 is driven to flip by the first rotating component; a second rotating component is installed on the supporting plate 4; six left-right symmetrical grab hooks 5 are arranged on the second rotating component; a cutter 6 is arranged in the protective cover 2; two left-right symmetrical straight nozzles 7 are installed in the protective cover 2, and the straight nozzles 7 are connected to an external water pump.

[0031] The translation assembly includes an electric slide rail 101 and a fixed block 102 ; two left-right symmetrical electric slide rails 101 are fixedly connected to the protective cover 2 ; each electric slide rail 101 is fixedly connected to a fixed block 102 , and each fixed block 102 is rotatably connected to an adjacent fixed rod 3 .

[0032] The first rotating assembly includes a rack 201 and a gear 202 ; two left-right symmetrical racks 201 are fixedly connected to the inner wall of the protective cover 2 ; and a gear 202 is fixedly connected to each round rod.

[0033] The second rotating component includes a fixed seat 301, a connecting rod 302 and a motor 303; four fixed seats 301 distributed in a rectangular shape are fixedly connected to the supporting plate 4; a connecting rod 302 is connected to two adjacent fixed seats 301 for common rotation, and each grab hook 5 is fixedly connected to the adjacent connecting rod 302; two motors 303 are arranged on the supporting plate 4, and the output end of each motor 303 is fixedly connected to the adjacent connecting rod 302.

[0034] The feed opening 1001 of the mixer 1 is configured in an inverted truncated cone shape.

[0035] The cutter 6 is arranged in an arc shape.

[0036] The cutter 6 is made of heat-conducting material and is connected to an external heating device.

[0037] It also includes an inclined nozzle 9; four left-right symmetrical inclined nozzles 9 are fixedly connected to the protective cover 2, and the inclined nozzles 9 are all facing the inclined surface of the discharge port 1001.

[0038] It also includes an electric roller 401; the supporting plate 4 is composed of two connecting plates, and the two connecting plates are rotatably connected by a connecting shaft; two front-to-back symmetrical curved strips 3001 are arranged between the two fixed rods 3; a connecting part 4001 is arranged on each connecting plate of the supporting plate 4; the front and rear ends of each connecting part 4001 are fixedly connected to two upper-lower symmetrical electric rollers 401, and the electric rollers 401 roll on adjacent curved strips 3001; the upper and lower adjacent electric rollers 401 are movably connected by an elastic telescopic block.

[0039] It also includes protrusions 402 ; each curved strip 3001 is provided with a plurality of protrusions 402 .

[0040] Each of the bumps 402 is made of rubber.

[0041] The working principle of this embodiment is:

[0042] In the first step, the baffle 2001 is manually opened, and then the electric slide rail 101 is controlled to drive the fixing rod 3 and the supporting plate 4 to move forward, and then the cement bag 8 is placed horizontally on the supporting plate 4, and then the motor 303 is controlled to drive the connecting rod 302 and the grab hook 5 to rotate, so that the grab hook 5 rotates toward one side of the cement bag 8 and is inserted into the inside of the cement bag 8, thereby fixing the left and right sides of the cement bag 8.

[0043] In the second step, when the cement bag 8 is fixed, the electric slide rail 101 is controlled again to drive the fixing rod 3, the supporting plate 4 and the cement bag 8 to move backward, until the fixing rod 3 and the supporting plate 4 enter the protective cover 2, and then the baffle 2001 is manually closed. At the same time, when the supporting plate 4 drives the cement bag 8 to move backward, the cutter 6 gradually contacts the upper side of the cement bag 8 and cuts the upper side of the cement bag 8, so that a break is generated on the upper side of the cement bag 8, thereby facilitating the subsequent pouring out of the cement in the cement bag 8. At the same time, compared with a slit-shaped incision, the cutter 6 is arranged in an arc shape to make the incision in an arc shape, thereby increasing the incision on the upper side of the cement bag 8 and improving the efficiency of subsequent cement pouring.

[0044] At the same time, when the cutter 6 is about to cut the cement bag 8, the external heating device is started to transfer heat to the cutter 6, so that the part of the cement bag 8 that contacts the cutter 6 is softened, thereby reducing the resistance of the cutter 6 during cutting and increasing the cutting speed of the cutter 6.

[0045] In the third step, after the cement bag 8 is cut, as the electric slide 101 drives the fixed block 102 and the fixed rod 3 to continue to move backward, the gear 202 on the fixed block 102 gradually approaches the rack 201 on the inner wall of the protective cover 2 and meshes with each other. As the fixed block 102 and the fixed rod 3 continue to move backward, the gear 202 will rotate counterclockwise on the rack 201 as viewed from right to left, and drive the fixed rod 3 and the supporting plate 4 to rotate counterclockwise as a whole, until the incision of the cement bag 8 on the supporting plate 4 faces the discharge port 1001 of the mixer 1, and the electric slide 101 is controlled to stop moving backward. At this time, the cement in the cement bag 8 falls from the incision into the mixer 1 below due to gravity.

[0046] In the fourth step, as the cement falls into the mixer 1, a large amount of dust will be generated. The raised dust is shielded and blocked by the protective cover 2 to prevent the workers from direct contact with the cement dust and avoid the workers from inhaling a large amount of cement dust, thereby reducing the risk of workers contracting pneumoconiosis. At the same time, the external water pump is started, and the direct nozzle 7 is controlled to spray water mist to absorb the dust in the protective cover 2 and accelerate the settling speed of the dust.

[0047] At the same time, since the inclined nozzles 9 are all facing the inclined surface of the discharge port 1001, after the inclined nozzles 9 spray water, the cement dropped on the inclined surface of the discharge port 1001 will be cleaned up, and the cement will be brought to the inside of the mixer 1 through the water flow to avoid waste of raw materials.

[0048] The fifth step, when the cement in the cement bag 8 is poured out, the electric slide rail 101 is controlled again to drive the fixed rod 3 and the supporting plate 4 to move backward until the fixed rod 3 and the supporting plate 4 are located behind the mixer 1, and then the motor 303 is controlled to drive the connecting rod 302 and the grab hook 5 to rotate away from the cement bag 8, so that the cement bag 8 and the grab hook 5 are separated from each other, and the separated cement bag 8 will fall under the protective cover 2, and the fallen cement bag 8 can be collected and processed manually. When the cement bag 8 falls, the baffle 2001 of the protective cover 2 is opened manually. At the same time, the electric slide rail 101 is controlled to move forward. Taking the view from right to left as the reference, when the gear 202 moves to the lower side of the rack 201, it meshes with the rack 201 again, and drives the fixed rod 3 and the supporting plate 4 to rotate clockwise, so that the fixed rod 3 and the supporting plate 4 return to the initial state, and then repeat the above steps to complete the loading operation of the cement bag 8.

[0049] Step 6. When the cement content in the mixer 1 reaches the required amount, the top cover 2002 of the protective cover 2 is opened, and other raw materials are transported into the mixer 1 through the feed port on the protective cover 2. The discharge port 1001 of the mixer 1 is set to an inverted cone shape to guide the fallen raw materials to prevent some of the raw materials from accumulating on the upper side of the discharge port 1001. At the same time, it cooperates with the water flow sprayed by the inclined nozzle 9 to further avoid the waste of raw materials. After the feeding is completed, the mixer 1 is started to stir the raw materials, thereby completing the production and preparation of concrete, and the prepared concrete is discharged through the discharge port 1002.

[0050] In the third step of the above process: when the cutout of the cement bag 8 on the supporting plate 4 is facing the discharge port 1001 of the mixer 1, the electric roller 401 is controlled to move closer to the middle part of the fixed rod 3 on the curved strip 3001 of the fixed rod 3, thereby driving the connecting part 4001 of the supporting plate 4 to move closer to the middle part of the supporting plate 4. Since the supporting plate 4 is composed of two connecting plates, and the two connecting plates are rotatably connected, and since the cement bag 8 is located on the lower side of the supporting plate 4, when the connecting parts 4001 on the left and right sides gradually move closer to the middle, the two connecting plates will gradually combine into a V shape and squeeze the cement bag 8 below, so that the cement bag 8 follows the supporting plate 4 to become a V shape, and then the inverted cement bag 8 is pulled by the left and right sides, which expands the cutout on the cement bag 8 and changes the distribution state of cement in the cement bag 8, thereby improving the fluidity of cement and making it easier to flow out from the cutout, thereby improving the cement outflow efficiency.

[0051] At the same time, when the electric roller 401 drives the connecting part 4001 of the supporting plate 4 to move closer to the middle part of the supporting plate 4, the electric roller 401 is blocked during the movement by a number of protrusions 402 on the curved strip 3001, so that the electric roller 401 drives the connecting part 4001 to shake up and down, thereby driving the cement bag 8 on the supporting plate 4 to shake up and down together, preventing blockage in the process of cement flowing out of the incision, and at the same time ensuring that the cement in the cement bag 8 is fully poured out through shaking to reduce residue and avoid waste.

[0052] Furthermore, when a small amount of cement lumps and solidifies, the above-mentioned feeding method can prevent the lumped cement from being stuck to each other at the incision and unable to fall off, further improving the convenience and efficiency of cement feeding.

[0053] Since each bump 402 is made of rubber, the wear between the bump 402 and the electric roller 401 is reduced, thereby extending the service life of the device.

[0054] Example 2

[0055] On the basis of Example 1, Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, it also includes an airbag 501; a plurality of rubber layers 4002 are arranged on the supporting plate 4; six bilaterally symmetrical airbags 501 are fixedly connected to the bottom of the supporting plate 4, and adjacent airbags 501 are interconnected; each airbag 501 is located at the lower side of the adjacent rubber layer 4002.

[0056] It also includes a connecting ring 502 and a limiting plate 503; each connecting rod 302 is rotatably connected to two connecting rings 502 through a torsion spring; adjacent connecting rings 502 are commonly fixedly connected to the limiting plate 503; each limiting plate 503 is provided with three limiting holes 50301, and each grab hook 5 is located in an adjacent limiting hole 50301.

[0057] The working steps of this embodiment are:

[0058] In the third step of Example 1: during the pouring of cement, there is cohesive force between cement particles, and at the same time, during the outflow of cement, they will rub against each other to generate static electricity, thereby increasing the difficulty of pouring cement from the cement bag 8. To solve the above situation, when the support plate 4 drives the cement bag 8 to form a V-shape, the two connecting plates of the support plate 4 are close to each other, so that the adjacent air bags 501 on the connecting plates are close to each other and squeeze each other. Since each air bag 501 is located on the lower side of the adjacent rubber layer 4002, the squeezed air bag 501 will squeeze the adjacent rubber layer 4002, so that the rubber layer 4002 protrudes to one side of the cement bag 8 and squeezes the cement bag 8, thereby destroying the cohesive force between the cement particles inside the cement bag 8 and breaking the connection between the cement particles, thereby improving the fluidity of the cement, reducing the difficulty of pouring the cement, and improving work efficiency.

[0059] In the fifth step of Example 1: after the cement in the cement bag 8 is poured out, the control motor 303 drives the connecting rod 302 and the grab hook 5 to rotate away from the cement bag 8, so that the cement bag 8 and the grab hook 5 are separated from each other. Although the grab hook 5 is easy to insert into the cement bag 8 full of cement, during the separation process of the grab hook 5 and the empty cement bag 8, part of the cement bag 8 will be entangled on the grab hook 5, making it difficult to separate the grab hook 5 from the empty cement bag 8.

[0060] To solve the above situation, in the first step of Example 1: when the motor 303 drives the connecting rod 302 and the grab hook 5 to rotate toward one side of the cement bag 8, during the process of fixing the left and right sides of the cement bag 8, the connecting ring 502 and the limit plate 503 will rotate together with the connecting rod 302, and the limit plate 503 will gradually approach the cement bag 8 and contact it. At this time, the limit plate 503 is tightly attached to the surface of the cement bag 8 through the action of the torsion spring. After the cement inside the cement bag 8 is poured out, the control motor 303 drives the connecting rod 302 and the grab hook 5 to rotate toward the side away from the cement bag 8. At this time, the limit plate 503 is reset by the elastic force of the torsion spring. At the same time, the empty cement bag 8 wrapped around the grab hook 5 will be blocked by the limit plate 503. The empty cement bag 8 wrapped around the grab hook 5 is squeezed and blocked by the limit plate 503, so that the empty cement bag 8 is separated from the grab hook 5, thereby improving the separation effect of the empty cement bag 8 and the grab hook 5, thereby preventing the empty cement bag 8 from affecting the feeding.

[0061] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A concrete production device for a prestressed concrete railway bridge simply supported beam, comprising a mixer (1), a protective cover (2) and a fixing rod (3); a feed opening (1001) is provided on the mixer (1); a discharge opening (1002) is provided on the rear side of the mixer (1); a protective cover (2) for shielding dust is installed on the mixer (1); a plurality of fixing rods (3) are movably provided in the mixer (1); the characteristics are: The invention also comprises a translation assembly, a support plate (4), a first rotating assembly, a second rotating assembly, a grab hook (5), a cutter (6) and a direct spray head (7); the translation assembly is installed in the protective cover (2), and each fixed rod (3) is connected to the translation assembly; a support plate (4) for placing cement bags (8) is arranged between two adjacent fixed rods (3); the first rotating assembly is installed in the protective cover (2), and each fixed rod (3) is connected to the first rotating assembly; the second rotating assembly is installed on the support plate (4); a plurality of grab hooks (5) are arranged on the second rotating assembly; a cutter (6) for cutting cement bags (8) is arranged in the protective cover (2); a plurality of direct spray heads (7) are installed in the protective cover (2), and the direct spray heads (7) are connected to an external water pump.

2. The concrete production equipment for prestressed concrete railway bridge simply supported beams according to claim 1, characterized in that: The feed opening (1001) of the mixer (1) is configured to be in the shape of an inverted truncated cone.

3. The concrete production equipment for prestressed concrete railway bridge simply supported beams according to claim 1, characterized in that: The cutter (6) is arranged in a curved shape.

4. The concrete production equipment for prestressed concrete railway bridge simply supported beams according to claim 1, characterized in that: The cutter (6) is made of heat-conducting material and is connected to an external heating device.

5. The concrete production equipment for prestressed concrete railway bridge simply supported beams according to claim 2, characterized in that: It also includes an inclined nozzle (9); a plurality of inclined nozzles (9) are fixedly connected to the protective cover (2), and the inclined nozzles (9) are all facing the inclined surface of the discharge port (1001).

6. The concrete production equipment for prestressed concrete railway bridge simply supported beams according to claim 1, characterized in that: The invention also comprises an electric roller (401); the supporting plate (4) is composed of two connecting plates, and the two connecting plates are rotatably connected via a connecting shaft; a plurality of curved strips (3001) are arranged between adjacent fixing rods (3); a connecting portion (4001) is arranged on each connecting plate of the supporting plate (4); a plurality of electric rollers (401) are fixedly connected to the front end and the rear end of each connecting portion (4001), and the electric rollers (401) roll on adjacent curved strips (3001); and two upper and lower adjacent electric rollers (401) are movably connected via an elastic telescopic block.

7. The concrete production equipment for prestressed concrete railway bridge simply supported beams according to claim 6, characterized in that: It also includes protrusions (402); each curved strip (3001) is provided with a plurality of protrusions (402) for assisting the cement bag (8) to shake.

8. The concrete production equipment for prestressed concrete railway bridge simply supported beams according to claim 7, characterized in that: Each protrusion (402) is made of rubber.

9. The concrete production equipment for prestressed concrete railway bridge simply supported beams according to claim 1, characterized in that: It also includes airbags (501); a plurality of rubber layers (4002) are arranged on the supporting plate (4); a plurality of airbags (501) are fixedly connected to the bottom of the supporting plate (4), and adjacent airbags (501) are interconnected; each airbag (501) is located at the lower side of an adjacent rubber layer (4002).

10. The concrete production equipment for prestressed concrete railway bridge simply supported beams according to claim 1, characterized in that: It also includes a connecting ring (502) and a limiting plate (503); a plurality of connecting rings (502) are installed on the second rotating assembly; a limiting plate (503) is fixedly connected between adjacent connecting rings (502) for preventing the cement bag (8) from getting stuck; each limiting plate (503) is provided with a plurality of limiting holes (50301), and each grab hook (5) is located in an adjacent limiting hole (50301).

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