Concrete prefabricated kerb production equipment with raw material quantitative proportioning mechanism

Abstract

The invention relates to the technical field of concrete prefabricated kerb production, in particular to concrete prefabricated kerb production equipment with a raw material quantitative proportioning mechanism, the concrete prefabricated kerb production equipment comprises a mixing tank and a support, a supporting plate is fixedly mounted in the support, and a dispersing mechanism is arranged in one quantitative cylinder; the dispersing mechanism comprises a material receiving barrel, a second air cylinder and a rotating assembly, the second air cylinder is fixedly installed at the bottom of the supporting plate, the telescopic shaft end of the second air cylinder is fixedly connected with the material receiving barrel, the two ends of the top of the material receiving barrel are both slidably sleeved with second guide rods, and the bottoms of the two second guide rods are both fixedly connected with the supporting plate; and a discharging plate is arranged at the bottom of the receiving barrel. The device has the beneficial effects that a feeding mode adopting a belt feeder in the prior art is replaced, and a structure in direct contact with high-water-content aggregate is made of a stainless steel material, so that the adhesion condition can be reduced, and the cleaning frequency is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of concrete precast curbstone production, in particular to a concrete precast curbstone production equipment with a raw material quantitative proportioning mechanism. BACKGROUND

[0002] With the rapid development of modern technology, in the aspect of concrete construction, many structures can be manufactured in batches, such as concrete curbstones, which can be directly installed at the construction site after being transported to the site, thereby bringing great convenience to construction personnel. Curbstones are marker stones arranged between the road surface and other structures. In urban roads, curbstones are generally arranged between the separation belt and the road surface, and between the sidewalk and the road surface. In highways, curbstones are often arranged at the edge of the central separation belt, the right edge of the driving lane, or the outer edge of the road shoulder.

[0003] In the preparation of concrete precast curbstones, different raw materials need to be mixed in a certain proportion. In the prior art, different raw materials are added to the mixing tank through a belt feeder. However, in the preparation process of concrete precast curbstones, there are high-water-content aggregates. Fine aggregates with a water content of >5% will adhere to the surface of the belt, causing a stubborn residual layer to form on the surface of the belt. The higher the water content, the more the belt surface will adhere, and the effective conveying capacity of the feeder will decrease, thereby prolonging the time of raw material input. In addition, subsequent frequent cleaning by workers is required, which is not conducive to improving the efficiency of concrete precast curbstone preparation. SUMMARY

[0004] The present application aims to provide a concrete precast curbstone production equipment with a raw material quantitative proportioning mechanism to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a concrete precast curbstone production equipment with a raw material quantitative proportioning mechanism, comprising a mixing tank and a support, a support plate is fixedly installed inside the support, a plurality of uniformly distributed quantitative cylinders are fixedly installed inside the support plate, a discharging mechanism is arranged at the bottom of the support plate, and one of the quantitative cylinders is provided with a dispersing mechanism inside.

[0006] The dispersing mechanism comprises a receiving cylinder, a second air cylinder, and a rotating assembly. The second air cylinder is fixedly installed at the bottom of the support plate, the telescopic shaft end of the second air cylinder is fixedly connected with the receiving cylinder, guide rods II are slidably sleeved at both ends of the top of the receiving cylinder, the bottoms of the two guide rods II are fixedly connected with the support plate, and a discharging plate is arranged at the bottom of the receiving cylinder.

[0007] Preferably, a plurality of evenly distributed hoppers are fixedly installed on the top of the support, and valves are fixedly installed on the bottom of each of the hoppers. The plurality of metering cylinders cooperate with the plurality of hoppers respectively.

[0008] Preferably, the unloading mechanism includes a cylinder and multiple unloading plates. The top of the cylinder is fixedly connected to a support plate. A weighing plate is fixedly installed on the top of each of the multiple unloading plates. An extension rod is fixedly installed on one side of each of the multiple unloading plates. The top of each extension rod is rotatably connected to its corresponding metering cylinder. A strip-shaped adjustment groove is opened inside each of the multiple extension rods. An adjustment rod is movably installed inside each of the multiple strip-shaped adjustment grooves. A lifting plate is fixedly installed at the telescopic shaft end of the cylinder. Each of the multiple adjustment rods is fixedly connected to the lifting plate.

[0009] Preferably, the end of the lifting plate is slidably fitted with four evenly distributed guide rods, and the tops of the four guide rods are fixedly connected to the support plate.

[0010] Preferably, the rotating assembly includes a rotating cylinder and two transmission rods. An annular slide bar is fixedly installed on the top of the inner wall of the rotating cylinder, and an annular groove is formed on the outer side of the top of the receiving cylinder. The rotating cylinder is rotatably connected to the receiving cylinder through the mutual cooperation of the annular slide bar and the annular groove. The two transmission rods are symmetrically fixedly installed on both sides of the inner wall of the metering cylinder. Transmission grooves are formed at both ends of the outer side of the rotating cylinder, and the two transmission grooves cooperate with the two transmission rods respectively.

[0011] Preferably, the bottom of the feeding plate is provided with a strip-shaped adjustment groove II, and an adjustment rod II is movably installed inside the strip-shaped adjustment groove II. Connecting support rods are fixedly installed on the outside of both ends of the adjustment rod II. Both connecting support rods are slidably connected to the rotating cylinder. Push blocks are provided on the top of the opposite sides of the two connecting support rods. Multiple evenly distributed push rods are fixedly installed on the outside of the top of the receiving cylinder. The multiple push rods cooperate with the two push blocks respectively. Limit blocks are fixedly installed on both sides of the two connecting support rods.

[0012] Preferably, a rotating shaft is fixedly sleeved on one end of the top of each of the two push blocks, and a coil spring is sleeved on the outside of each of the two rotating shafts. The two ends of each coil spring are fixedly connected to their respective rotating shafts and connecting rods. Limiting rods are fixedly installed on the top of the opposite sides of each of the two connecting rods. A groove is opened at one end of each of the two push blocks, and the two limiting rods are located inside the two grooves respectively.

[0013] Preferably, a cylinder three is fixedly installed at the bottom of one side of the rotating cylinder, and an L-shaped hook rod is fixedly installed at the telescopic shaft end of the cylinder three. The L-shaped hook rod cooperates with one end of the adjusting rod two.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The device features multiple metering cylinders and internal weighing plates. After weighing different raw materials, the raw materials inside the metering cylinders are discharged into the mixing tank by a discharge mechanism for mixing, achieving a quantitative proportioning effect. This device combines direct feeding from the silo with gravity weighing, eliminating reliance on material flow and avoiding blockages. It replaces the existing method of using a belt feeder. Furthermore, the structure in direct contact with high-moisture aggregates is made of stainless steel, which reduces adhesion and cleaning frequency, thus improving the efficiency of precast concrete curbstone preparation.

[0016] 2. Through the set dispersion mechanism, when the aggregate falls into the receiving cylinder, it will fall into the positioning cylinder along the feeding plate. The feeding plate is set to buffer the aggregate being fed, avoiding the aggregate falling directly from a high position and causing a large impact force on the weighing plate directly below, which would damage the weighing plate. At the same time, under the action of the rotating component, the feeding plate rotates, and the aggregate fed by the feeding plate can be evenly distributed on the top of the weighing plate, avoiding uneven force on the aggregate at the top of the weighing plate, which would affect the measurement results. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of multiple silos according to the present invention;

[0019] Figure 3 This is a schematic diagram of the support plate and the top structure of multiple metering cylinders of the present invention;

[0020] Figure 4 This is a schematic diagram of the support plate and the bottom structure of multiple metering cylinders of the present invention;

[0021] Figure 5 This is a schematic diagram of the support plate structure of the present invention;

[0022] Figure 6 This is a schematic diagram of the combined structure of the metering cylinder and the receiving cylinder of the present invention;

[0023] Figure 7 This is a schematic diagram of the unloading plate structure of the present invention;

[0024] Figure 8 This is a schematic diagram of the internal structure of the metering cylinder of the present invention;

[0025] Figure 9 This is a schematic diagram of the combined structure of the receiving cylinder and the rotating cylinder of the present invention;

[0026] Figure 10This is a schematic diagram of the bottom structure of the receiving cylinder of the present invention;

[0027] Figure 11 This is a schematic diagram of the internal structure of the rotating cylinder of the present invention;

[0028] Figure 12 This is a schematic diagram of the material feeding plate structure of the present invention;

[0029] Figure 13 This is a schematic diagram of the pusher block structure of the present invention.

[0030] The components represented by each number in the attached diagram are listed below: 1. Mixing tank; 2. Support frame; 3. Hopper; 4. Valve; 5. Support plate; 6. Metering cylinder; 7. Cylinder 1; 8. Discharge plate; 9. Weighing plate; 10. Extension rod; 11. Strip-shaped adjusting groove 1; 12. Adjusting rod 1; 13. Lifting plate; 14. Guide rod 1; 15. Receiving cylinder; 16. Cylinder 2; 17. Guide rod 2; 18. Discharge plate; 19. Rotating cylinder; 20. Transmission rod; 21. Annular slide bar; 22. Annular slide groove; 23. Transmission groove; 24. Strip-shaped adjusting groove 2; 25. Adjusting rod 2; 26. Connecting support rod; 27. Push block; 28. Top rod; 29. ​​Limiting block; 30. Rotating shaft; 31. Coil spring; 32. Limiting rod; 33. Groove; 34. Cylinder 3; 35. L-shaped hook rod. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This invention provides a technical solution: such as Figures 1-13 The concrete precast curbstone production equipment shown includes a mixing tank 1 and a support 2. A support plate 5 is fixedly installed inside the support 2. Multiple evenly distributed metering cylinders 6 are fixedly installed inside the support plate 5. A discharge mechanism is provided at the bottom of the support plate 5. A dispersing mechanism is provided inside one of the metering cylinders 6.

[0033] The dispersing mechanism includes a receiving cylinder 15, a second cylinder 16, and a rotating assembly. The second cylinder 16 is fixedly installed on the bottom of the support plate 5. The telescopic shaft end of the second cylinder 16 is fixedly connected to the receiving cylinder 15. Guide rods 17 are slidably sleeved at both ends of the top of the receiving cylinder 15. The bottom of the two guide rods 17 is fixedly connected to the support plate 5. A discharge plate 18 is provided at the bottom of the receiving cylinder 15.

[0034] In this embodiment, the structure in direct contact with the raw materials is made of stainless steel. For aggregates with high moisture content, this reduces adhesion and thus reduces the number of cleaning operations. Multiple raw materials are fed into multiple metering cylinders 6 for weighing. Large aggregate particles are fed into metering cylinders 6 with a dispersing mechanism. After weighing, the raw materials in the metering cylinders 6 are fed into the mixing tank 1 for mixing and processing using a discharge mechanism. This achieves the effect of quantitative proportioning. Furthermore, the combination of direct feeding and gravity weighing eliminates the need to rely on material flow and avoids blockages.

[0035] Multiple evenly distributed hoppers 3 are fixedly installed on the top of the support 2, and valves 4 are fixedly installed on the bottom of each of the multiple hoppers 3. Multiple metering cylinders 6 cooperate with each of the multiple hoppers 3.

[0036] In this embodiment, multiple hoppers 3 are used to store various raw materials. By opening the corresponding valves 4, the raw materials in the hoppers 3 can be fed into the metering cylinder 6.

[0037] The unloading mechanism includes a cylinder 7 and multiple unloading plates 8. The top of the cylinder 7 is fixedly connected to the support plate 5. A weighing plate 9 is fixedly installed on the top of each of the multiple unloading plates 8. An extension rod 10 is fixedly installed on one side of each of the multiple unloading plates 8. The top of each extension rod 10 is rotatably connected to its corresponding metering cylinder 6. Each extension rod 10 has a strip-shaped adjustment groove 11 inside. An adjustment rod 12 is movably installed inside each of the multiple strip-shaped adjustment grooves 11. A lifting plate 13 is fixedly installed at the telescopic shaft end of the cylinder 7. Each adjustment rod 12 is fixedly connected to the lifting plate 13.

[0038] In this embodiment, after the raw materials are put into the metering cylinder 6, they are weighed by the weighing plate 9. After weighing, the cylinder 7 is started, which drives the lifting plate 13 to move upward. Multiple adjusting rods 12 move inside their respective corresponding strip adjusting grooves 11, and multiple extension rods 10 flip, thereby causing multiple unloading plates 8 to flip. The raw materials inside multiple metering cylinders 6 then fall into the mixing tank 1 for mixing, achieving the effect of quantitative proportioning.

[0039] The end of the lifting plate 13 is slidably fitted with four evenly distributed guide rods 14, and the tops of the four guide rods 14 are fixedly connected to the support plate 5.

[0040] In this embodiment, when the lifting plate 13 moves up and down, it moves stably along the four guide rods 14, which improves the stability of the lifting plate 13 during movement.

[0041] The rotating assembly includes a rotating cylinder 19 and two transmission rods 20. An annular slide bar 21 is fixedly installed on the top of the inner wall of the rotating cylinder 19. An annular groove 22 is opened on the outer side of the top of the receiving cylinder 15. The rotating cylinder 19 is rotatably connected to the receiving cylinder 15 through the mutual cooperation of the annular slide bar 21 and the annular groove 22. The two transmission rods 20 are symmetrically fixedly installed on both sides of the inner wall of the metering cylinder 6. Transmission grooves 23 are opened at both ends of the outer side of the rotating cylinder 19. The two transmission grooves 23 are respectively cooperated with the two transmission rods 20.

[0042] In this embodiment, with the cooperation of two transmission rods 20 and two transmission grooves 23, the receiving cylinder 15 moves upward and rotates along the trajectory of the two transmission grooves 23, thereby driving the feeding plate 18 to rotate. While the rotating cylinder 19 rotates, it drives the annular slide bar 21 to rotate inside the annular slide groove 22. The aggregate fed by the feeding plate 18 can be evenly distributed on the top of the weighing plate 9, avoiding uneven force on the aggregate at the top of the weighing plate 9 and affecting the measurement results.

[0043] The bottom of the feeding plate 18 is provided with a strip-shaped adjustment groove 24. An adjustment rod 25 is movably installed inside the strip-shaped adjustment groove 24. Connecting support rods 26 are fixedly installed on the outside of both ends of the adjustment rod 25. Both connecting support rods 26 are slidably connected to the rotating cylinder 19. Push blocks 27 are provided on the top of the opposite sides of the two connecting support rods 26. Multiple evenly distributed push rods 28 are fixedly installed on the outside of the top of the receiving cylinder 15. The multiple push rods 28 cooperate with the two push blocks 27 respectively. Limiting blocks 29 are fixedly installed on both sides of the two connecting support rods 26.

[0044] In this embodiment, during the rotation of the rotating cylinder 19, the two connecting support rods 26 rotate synchronously. When the two push blocks 27 touch the corresponding top rods 28, the two top rods 28 act on the two push blocks 27 respectively. The two push blocks 27 drive the two connecting support rods 26 to move upward. The adjusting rod 25 slides inside the strip-shaped adjusting groove 24, and the feeding plate 18 moves upward. When the two push blocks 27 are misaligned with the two top rods 28, under their own gravity, the two connecting support rods 26 and the feeding plate 18 descend and reset. This process is repeated, and the feeding plate 18 achieves the effect of reciprocating up and down movement, thereby avoiding the jamming of aggregate inside the receiving cylinder 15.

[0045] A rotating shaft 30 is fixedly fitted at one end of the top of each of the two push blocks 27. A coil spring 31 is fitted on the outside of each of the two rotating shafts 30. The two ends of the two coil springs 31 are fixedly connected to their respective rotating shafts 30 and connecting rods 26. Limiting rods 32 are fixedly installed on the top of the opposite sides of the two connecting rods 26. A groove 33 is opened at one end of each of the two push blocks 27. The two limiting rods 32 are located inside the two grooves 33 respectively.

[0046] In this embodiment, when the receiving cylinder 15 descends, the rotating cylinder 19 reverses and resets. At this time, when the two push blocks 27 touch the corresponding push rods 28, the two push blocks 27 are subjected to force and rotate around their respective corresponding rotating axes 30. The two coil springs 31 are subjected to force and deform. When the two push blocks 27 are misaligned with the corresponding push rods 28, under the action of the two coil springs 31, the two push blocks 27 reset and contact their respective corresponding limiting rods 32.

[0047] A cylinder 34 is fixedly installed at the bottom of one side of the rotating cylinder 19. An L-shaped hook rod 35 is fixedly installed at the telescopic shaft end of the cylinder 34. The L-shaped hook rod 35 cooperates with one end of the adjusting rod 25.

[0048] In this embodiment, cylinder 34 is activated, which drives L-shaped hook rod 35 to move upward. L-shaped hook rod 35 lifts one end of adjusting rod 25 to move upward, thereby causing the feeding plate 18 to move upward as a whole, closing the opening at the bottom of receiving cylinder 15, thus stopping the continued feeding of aggregate inside receiving cylinder 15.

[0049] Working principle: During operation, different raw materials are first added to the multiple hoppers 3. The raw materials for preparing precast concrete curbstone include aggregates. The aggregates are added to the hoppers 3 at the top of the bulk material handling mechanism. When adding raw materials to the mixing tank 1, the valves 4 at the bottom of the multiple hoppers 3 are opened, and the raw materials inside the multiple hoppers 3 fall into their respective metering cylinders 6. The corresponding weighing plates 9 weigh the different raw materials. When the data measured by the weighing plate 9 reaches the set value, the multiple valves 4 are closed to stop the feeding. Then, the cylinder 7 is activated, driving the lifting plate 13 to move upwards. The lifting plate 13 moves stably upwards along the four guide rods 14. 13 drives multiple adjusting rods 12 to move inside their respective corresponding strip adjusting grooves 11, and multiple extension rods 10 to flip, thereby causing multiple unloading plates 8 to flip, and the raw materials inside multiple metering cylinders 6 fall into the mixing tank 1 for mixing, achieving the effect of quantitative proportioning. This device adopts a combination of direct feeding from the silo 3 and gravity weighing, without relying on material flow, avoiding blockage, and replacing the existing method of feeding with a belt feeder. In addition, the structure that comes into direct contact with the high moisture content aggregate is made of stainless steel, which can reduce adhesion, reduce the number of cleaning times, and help improve the efficiency of precast concrete curbstone preparation.

[0050] Before the aggregate falls into the lower metering cylinder 6, it first falls into the receiving cylinder 15, and then along the discharge plate 18 into the metering cylinder 6. The discharge plate 18 is designed to buffer the aggregate during discharge, preventing it from falling directly from a high position and causing a large impact on the weighing plate 9 below, which could damage the weighing plate 9. At the same time, cylinder 16 is activated, pushing the receiving cylinder 15 to slide upwards along the two guide rods 17, thereby gradually positioning the aggregate inside the receiving cylinder 15 at different positions inside the metering cylinder 6. With the cooperation of the two transmission rods 20 and the two transmission grooves 23, the receiving... As the cylinder 15 moves upward, it rotates along the trajectory of the two transmission grooves 23, thereby driving the feeding plate 18 to rotate. Simultaneously, the rotating cylinder 19 drives the annular slide bar 21 to rotate within the annular groove 22. This ensures that the aggregate fed by the feeding plate 18 is evenly distributed on the top of the weighing plate 9, preventing uneven force distribution and ensuring accurate measurement. Furthermore, during the rotation of the rotating cylinder 19, the two connecting rods 26 rotate synchronously, driving the two push blocks 27 to rotate. The limiting blocks 29 on both sides of the two connecting rods 26 serve a limiting function. To prevent the connecting rods 26 from sliding downwards excessively, as the two connecting rods 26 drive the two push blocks 27 to rotate, when the two push blocks 27 touch the corresponding push rods 28, the two push rods 28 act on the two push blocks 27 respectively. Under the action of the two limiting rods 32, the two push blocks 27 will not rotate around the rotation axis 30, and the two push blocks 27 will move upwards under the force of the two push rods 28. The two push blocks 27 drive the two connecting rods 26 to move upwards respectively, the adjusting rod 25 slides inside the strip adjusting groove 24, and the feeding plate 18 moves upwards. When the two push blocks 27 are misaligned with the two push rods 28, Under its own gravity, the two connecting rods 26 and the feeding plate 18 descend and reset. As the rotating cylinder 19 continues to rotate, the feeding plate 18 achieves the effect of reciprocating up and down, thereby avoiding the material jamming inside the receiving cylinder 15. When the receiving cylinder 15 descends, the rotating cylinder 19 reverses and resets. At this time, when the two push blocks 27 touch the corresponding top rods 28, the two push blocks 27 are subjected to force and rotate around their respective corresponding rotating axes 30. The two coil springs 31 are subjected to force and deform. When the two push blocks 27 are misaligned with the corresponding top rods 28, under the action of the two coil springs 31, the two push blocks 27 reset and contact their respective corresponding limit rods 32.

[0051] When the weighing plate 9 below the aggregate measures the weight of the aggregate to the set value, although the valve 4 directly above is closed, there may still be residual aggregate on the top of the discharge plate 18. At this time, the cylinder 34 is activated, and the cylinder 34 drives the L-shaped hook rod 35 to move upward. The L-shaped hook rod 35 lifts one end of the adjusting rod 25 to move upward, thereby moving the discharge plate 18 upward as a whole, closing the opening at the bottom of the receiving cylinder 15, and thus stopping the aggregate from continuing to be discharged from the receiving cylinder 15.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0053] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A precast concrete curbstone production equipment with a raw material quantitative proportioning mechanism, comprising a mixing tank (1) and a support frame (2), characterized in that: The support plate (5) is fixedly installed inside the bracket (2), and multiple uniformly distributed metering cylinders (6) are fixedly installed inside the support plate (5). The bottom of the support plate (5) is provided with a discharge mechanism, and a dispersing mechanism is provided inside one of the metering cylinders (6). The dispersing mechanism includes a receiving cylinder (15), a second cylinder (16), and a rotating assembly. The second cylinder (16) is fixedly installed at the bottom of the support plate (5). The telescopic shaft end of the second cylinder (16) is fixedly connected to the receiving cylinder (15). Guide rods (17) are slidably sleeved at both ends of the top of the receiving cylinder (15). The bottoms of the two guide rods (17) are fixedly connected to the support plate (5). A discharge plate (18) is provided at the bottom of the receiving cylinder (15).

2. The precast concrete curbstone production equipment with a raw material quantitative proportioning mechanism according to claim 1, characterized in that: The top of the support (2) is fixedly equipped with multiple evenly distributed hoppers (3), and the bottom of each of the multiple hoppers (3) is fixedly equipped with a valve (4). The multiple metering cylinders (6) cooperate with each of the multiple hoppers (3).

3. The precast concrete curbstone production equipment with a raw material quantitative proportioning mechanism according to claim 1, characterized in that: The unloading mechanism includes a cylinder (7) and multiple unloading plates (8). The top of the cylinder (7) is fixedly connected to the support plate (5). Weighing plates (9) are fixedly installed on the top of each of the multiple unloading plates (8). Extension rods (10) are fixedly installed on one side of each of the multiple unloading plates (8). The top of each extension rod (10) is rotatably connected to its corresponding metering cylinder (6). Each extension rod (10) has a strip-shaped adjustment groove (11) inside. An adjustment rod (12) is movably installed inside each of the strip-shaped adjustment grooves (11). A lifting plate (13) is fixedly installed at the telescopic shaft end of the cylinder (7). Each adjustment rod (12) is fixedly connected to the lifting plate (13).

4. The precast concrete curbstone production equipment with a raw material quantitative proportioning mechanism according to claim 3, characterized in that: The end of the lifting plate (13) is slidably fitted with four evenly distributed guide rods (14), and the tops of the four guide rods (14) are fixedly connected to the support plate (5).

5. The precast concrete curbstone production equipment with a raw material quantitative proportioning mechanism according to claim 1, characterized in that: The rotating assembly includes a rotating cylinder (19) and two transmission rods (20). An annular slide bar (21) is fixedly installed on the top of the inner wall of the rotating cylinder (19). An annular groove (22) is opened on the outside of the top of the receiving cylinder (15). The rotating cylinder (19) is rotatably connected to the receiving cylinder (15) through the mutual cooperation of the annular slide bar (21) and the annular groove (22). The two transmission rods (20) are symmetrically fixedly installed on both sides of the inner wall of the metering cylinder (6). Transmission grooves (23) are opened at both ends of the outer side of the rotating cylinder (19). The two transmission grooves (23) are respectively cooperated with the two transmission rods (20).

6. The precast concrete curbstone production equipment with a raw material quantitative proportioning mechanism according to claim 1, characterized in that: The bottom of the feeding plate (18) is provided with a strip-shaped adjustment groove (24). An adjustment rod (25) is movably installed inside the strip-shaped adjustment groove (24). A connecting support rod (26) is fixedly installed on the outside of both ends of the adjustment rod (25). Both connecting support rods (26) are slidably connected to the rotating cylinder (19). Push blocks (27) are provided on the top of the opposite sides of the two connecting support rods (26). Multiple evenly distributed push rods (28) are fixedly installed on the outside of the top of the receiving cylinder (15). The multiple push rods (28) cooperate with the two push blocks (27) respectively. Limit blocks (29) are fixedly installed on both sides of the two connecting support rods (26).

7. A precast concrete curbstone production equipment with a raw material quantitative proportioning mechanism according to claim 6, characterized in that: A rotating shaft (30) is fixedly sleeved on one end of the top of each of the two push blocks (27). A coil spring (31) is sleeved on the outside of each of the two rotating shafts (30). The two ends of the two coil springs (31) are fixedly connected to their respective rotating shafts (30) and connecting rods (26). Limiting rods (32) are fixedly installed on the top of the opposite sides of the two connecting rods (26). A groove (33) is opened at one end of each of the two push blocks (27). The two limiting rods (32) are located inside the two grooves (33).

8. A precast concrete curbstone production equipment with a raw material quantitative proportioning mechanism according to claim 5, characterized in that: A cylinder three (34) is fixedly installed at the bottom of one side of the rotating cylinder (19). An L-shaped hook rod (35) is fixedly installed at the telescopic shaft end of the cylinder three (34). The L-shaped hook rod (35) cooperates with one end of the adjusting rod two (25).

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