Prefabricated concrete pipe culvert distributing device
By designing the hopper and cone of the precast concrete culvert placing device, the problems of uneven material distribution and difficulty in controlling the unloading speed during concrete pouring are solved, achieving uniform layered pouring and improving construction speed, while reducing safety hazards and environmental pollution.
Patent Information
- Application Number
- CN202421113631.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-21
AI Technical Summary
In existing technologies, the pouring process of precast concrete culverts suffers from uneven material distribution and the inability to effectively control the concrete discharge speed, resulting in slow construction speed, numerous safety hazards, environmental pollution, and high costs.
A precast concrete culvert placing device is adopted, including a hopper and a placing cone. The hopper is hoisted to the top of the culvert formwork by a lifting device. The opening of the discharge port is controlled by the top rod of the placing cone to achieve uniform discharge and layered pouring of concrete. Combined with a cylindrical retaining ring, it ensures that the concrete does not splash or leak around the working surface during the placement process.
The concrete discharge speed was effectively controlled, avoiding the impact of excessive initial speed on the reinforcing bars and embedded parts. Uniform layered pouring was achieved, improving construction speed and environmental cleanliness, while reducing noise pollution.
Smart Images
Figure CN222328603U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of prefabricated pipe culvert preparation, and in particular to a prefabricated concrete pipe culvert material distribution device. Background Art
[0002] Precast concrete pipe is an important building material, widely used in various fields such as construction, transportation, water conservancy, etc. In conventional large-diameter and high-grade pipe culvert factories, core mold vibration pipe making is preferred; but with the development trend of urban construction, some unconventional large-diameter pipe culverts are increasingly used; in terms of single project analysis, vertical vibration method is more economical than core mold vibration pipe making, and production quality and safety can also be well guaranteed.
[0003] Vertical vibration method is a conventional construction process. In the whole process, the quality of concrete pouring and distribution directly affects the quality of the finished product. Conventional concrete pouring usually adopts manual silo, small hopper silo and automobile pump direct silo. Manual silo construction speed is slow and easy to pollute the environment; small hopper silo is faster than manual construction, but it is difficult to achieve balanced distribution; the back and forth movement of the hopper increases the safety risk of construction workers, and also causes serious wear of the hopper wire rope, posing a safety hazard in construction; automobile pumping into the silo, by comparison, has a high construction cost, a high sand rate of pumped concrete, a high cement dosage, and a large amount of pumping agent and admixture. If it is not well controlled, it is extremely easy to produce concrete cracks. The initial velocity of concrete at the outlet of the pump pipe is relatively high, and the impact force on steel bars and embedded components is relatively large, which is easy to cause deformation and displacement, and a certain amount of noise will be generated when pumping concrete, which has a certain impact on the surrounding environment. Utility Model Content
[0004] The embodiment of the present application provides a precast concrete culvert material distribution device, which is used to solve the technical problems of uneven material distribution and inability to effectively control the unloading speed of concrete during the pouring of existing precast concrete culverts.
[0005] To achieve the above objectives, the present application provides a precast concrete pipe culvert material placing device, comprising:
[0006] A hopper, comprising a bucket body, a hanger and a discharge valve, wherein a loading port is arranged at the top of the bucket body, and a discharge port is arranged at the bottom of the bucket body; the hanger is arranged at the upper end of the bucket body, and is used for lifting the bucket body by a lifting device; the discharge valve is located in the bucket body, and the discharge valve comprises a valve cover and a guide shaft, and in the vertical direction, the projection area of the valve cover is larger than the projection area of the discharge port, the valve cover is arranged on the discharge port, the lower end of the guide shaft is fixed on the valve cover, a bracket is arranged inside the bucket body, and the guide shaft is slidably connected with the bracket in the vertical direction; and
[0007] The distribution hopper cone includes a main body with a conical surface, a push rod arranged at the tip of the main body, a cylindrical retaining ring sleeved on the outside of the large end of the main body and spaced from the main body, and a plurality of partition plates uniformly connected along the circumferential direction between the inner side of the cylindrical retaining ring and the main body, and the push rod is used to push open the valve cover to open the discharge port.
[0008] Optionally, the lower end of the bucket body is tapered.
[0009] Optionally, the bucket body includes an upper bucket body and a lower bucket body connected in sequence from top to bottom, the upper bucket body is a cylindrical barrel, the top opening of the cylindrical barrel forms the loading port, and the lower bucket body is a frustum-shaped barrel with the small end facing downward, and the small end opening of the frustum-shaped barrel forms the unloading port.
[0010] Optionally, the hanger includes a crossbeam, a lifting lug arranged in the middle of the crossbeam, and two connecting beams connected to both ends of the crossbeam, and one end of the two connecting beams away from the crossbeam is respectively hinged to the opposite outer sides of the upper end of the bucket body.
[0011] Optionally, the hopper further comprises a plurality of legs, wherein the plurality of legs are circumferentially spaced apart and arranged on the outside of the hopper body, and vertically, lower ends of the legs are lower than the discharge port.
[0012] Optionally, the inner diameter of the cylindrical retaining ring gradually decreases from top to bottom.
[0013] Optionally, a hanging hole is provided at the upper end of the top rod.
[0014] Optionally, the main body comprises a cone or a conical shell with a pointed end facing upward.
[0015] The beneficial effect of the precast concrete culvert material distribution device provided by the present application is that, compared with the prior art, when the precast concrete culvert material distribution device of the present application is used, the distribution bucket cone is first lifted to the top of the culvert formwork by the lifting equipment (gantry crane) at the casting site, and the cylindrical retaining ring falls into the formwork, and the high-grade concrete is unloaded from the concrete transport tank truck into the bucket body of the hopper, and the bucket body filled with concrete is lifted to the top of the distribution bucket cone by the lifting equipment through the hanger, and it is ensured that the discharge port of the bucket body is directly opposite to the top rod of the distribution bucket cone, and then the bucket body is slowly lowered, and the top rod is inserted into the discharge port and the valve cover is pushed open for unloading, and the unloading speed can be controlled by the insertion depth of the top rod, and the above unloading operation is repeated until the pouring of the culvert concrete is completed.
[0016] The precast concrete culvert placing device can effectively control the concrete unloading speed, avoiding the segregation phenomenon caused by the impact of the steel bars, embedded parts and concrete due to excessive initial speed; the conical surface on the main body of the placing bucket cone is used to evenly distribute the concrete to the surrounding areas of the mold, so that the concrete is evenly poured in layers, providing a good working surface for concrete vibration, and greatly improving the speed of concrete pouring; and in the concrete pouring process, while the placing bucket cone is evenly distributing the concrete, the cylindrical retaining ring can ensure that the concrete will not be washed or leaked around the operating surface during the silo entry process, thereby ensuring that the operating surface is clean and tidy. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0018] in:
[0019] Figure 1 It is a schematic diagram of the overall structure of a precast concrete pipe culvert material distribution device shown in one embodiment of the present application;
[0020] Figure 2 It is a schematic diagram of the internal structure of the bucket body of the precast concrete culvert material distribution device shown in one embodiment of the present application;
[0021] Figure 3 It is a schematic cross-sectional structural diagram of a distribution bucket cone in a precast concrete culvert distribution device shown in one embodiment of the present application.
[0022] Description of main component symbols:
[0023] 10. Hopper;
[0024] 110, bucket body; 1101, loading port; 1102, unloading port; 111, upper bucket body; 112, lower bucket body; 113, bracket;
[0025] 120, hanger; 121, crossbeam; 122, lifting lug; 123, connecting beam;
[0026] 130, discharge valve; 131, valve cover; 132, guide shaft;
[0027] 140, outrigger;
[0028] 20. Fabric bucket cone;
[0029] 210. Subject;
[0030] 220, top rod; 2201, hanging hole;
[0031] 230. Cylindrical retaining ring;
[0032] 240. Partition plate. DETAILED DESCRIPTION
[0033] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.
[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. "Multiple" means two or more, unless otherwise clearly and specifically defined.
[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.
[0037] The embodiment of the present application provides a prefabricated concrete pipe culvert material distribution device, such as Figure 1-Figure 2 As shown, the precast concrete culvert material distribution device includes a hopper 10 and a material distribution hopper cone 20.
[0038] The hopper 10 includes a bucket body 110, a hanger 120 and a discharge valve 130. A loading port 1101 is provided at the top of the bucket body 110, and a discharge port 1102 is provided at the bottom of the bucket body 110. The hanger 120 is provided at the upper end of the bucket body 110, and is used for lifting the bucket body 110 by a lifting device. The discharge valve 130 is located in the bucket body 110, and the discharge valve 130 includes a valve cover 131 and a guide shaft 132. In the vertical direction, the projection area of the valve cover 131 is larger than the projection area of the discharge port 1102. The valve cover 131 is covered on the discharge port 1102, and the lower end of the guide shaft 132 is fixed on the valve cover 131. A bracket 113 is provided inside the bucket body 110, and the guide shaft 132 is slidably connected with the bracket 113 in the vertical direction.
[0039] The distribution hopper cone 20 includes a main body 210 with a conical surface, a push rod 220 arranged at the tip of the main body 210, a cylindrical retaining ring 230 sleeved on the outer side of the large end of the main body 210 and spaced from the main body 210, and a plurality of partition plates 240 uniformly connected along the circumferential direction between the inner side of the cylindrical retaining ring 230 and the main body 210. The push rod 220 is used to push open the valve cover 131 to open the discharge port 1102.
[0040] It can be understood that, under normal conditions, the valve cover 131 of the discharge valve 130 covers the discharge port 1102 under the action of its own gravity, closing the discharge port 1102. When the bucket body 110 is filled with concrete, the valve cover 131 covers the discharge port 1102 under the action of its own gravity and the gravity of the concrete above the valve cover 131. The valve cover 131 is pushed upward by the push rod 220, so that the valve cover 131 overcomes its own gravity and the gravity of the concrete above it and moves upward to open the discharge port 1102. The guide shaft 132 cooperates with the bracket 113 to ensure that the movement trajectory of the valve cover 131 is in the vertical direction during the process of the valve cover 131 being lifted upward by the push rod 220 and the process of the valve cover 131 falling freely after the discharge is completed.
[0041] When the precast concrete pipe culvert material distribution device is actually used, the on-site precast pipe culvert formwork is installed and generally accepted, the high-grade concrete is transported to the pouring site, and the concrete pouring preparation is completed. First, the distribution bucket cone 20 is steadily lifted to the top of the pipe culvert formwork by the lifting equipment (gantry crane) at the pouring site, and the cylindrical retaining ring 230 falls into the formwork. The high-grade concrete is unloaded from the concrete transport tanker into the bucket body 110 of the hopper 10. The single bucket body 110 has a concrete storage capacity of 2 / 3 of the bucket capacity. The bucket body 110 filled with concrete is also lifted to the top of the distribution bucket cone 20 by the lifting equipment (gantry crane), and the gantry crane is adjusted to ensure that the bottom of the bucket body 110 is The discharge port 1102 faces the top rod 220 of the distribution bucket cone 20, and then the bucket body 110 is slowly lowered, and the top rod 220 is used to insert the discharge port 1102 and push open the valve cover 131. After the discharge port 1102 is opened, the concrete in the bucket body 110 is transferred to the partition plate 240 through the conical surface of the main body 210, and enters the casting mold after being evenly divided by multiple partition plates 240. At the same time, the partition plate 240 can also have a certain deceleration effect on the concrete entering the mold. The speed of discharge can be controlled by the depth of insertion of the top rod 220 (it can be understood that the higher the valve cover 131 is pushed by the top rod 220, the greater the opening degree of the discharge port 1102). Repeat the above discharge operation until the culvert concrete is poured.
[0042] The precast concrete culvert material distribution device can effectively control the concrete unloading speed, and avoid the segregation phenomenon caused by the impact of the steel bars, embedded parts and concrete due to the excessive initial speed; the conical surface on the main body 210 of the material distribution bucket cone 20 is used to evenly distribute the material to the surrounding areas of the mold, so that the concrete is evenly poured in layers, providing a good working surface for concrete vibration, and greatly improving the speed of concrete pouring; and in the concrete pouring process, while the material distribution bucket cone 20 evenly distributes the concrete, the cylindrical retaining ring 230 can ensure that the concrete will not be washed or leaked around the operating surface during the warehousing process, so as to ensure that the operating surface is clean and tidy; in addition, the entire process is completed under the gravity of the concrete, and the noise generated to the surrounding environment can be ignored.
[0043] In one embodiment, if Figure 1-Figure 2 As shown, the lower end of the bucket body 110 is tapered, and this design facilitates the concrete inside the bucket body 110 to be completely discharged during the pouring process, avoiding the situation where the concrete is not completely discharged.
[0044] The bucket body 110 is the only part of the hopper 10 for storing concrete. The size of the bucket body 110 determines the bucket capacity of the hopper 10. The bucket capacity can be determined according to the volume of concrete in the prefabricated component and the lifting capacity of the lifting machinery. The commonly used bucket capacity is 0.5m 3 、0.8m 3 , 1.0m 3 , 1.2m 3 , 1.5m3 , 2m 3 Etc., can be prepared according to actual needs.
[0045] In a specific embodiment, Figure 1-Figure 2 As shown, the bucket body 110 includes an upper bucket body 111 and a lower bucket body 112 connected in sequence from top to bottom. The upper bucket body 111 is a cylindrical body, and the top opening of the cylindrical body forms a loading port 1101. The lower bucket body 112 is a frustum-shaped body with a small end facing downward, and the small end opening of the frustum-shaped body forms a discharge port 1102.
[0046] Specifically, the upper bucket body 111 and the lower bucket body 112 can be respectively formed of steel plates by rolling with professional equipment and then welded into a whole.
[0047] In one embodiment, if Figure 1 As shown, the hanger 120 includes a cross beam 121, a lifting ear 122 arranged in the middle of the cross beam 121, and two connecting beams 123 connected to both ends of the cross beam 121. The cross beam 121 and the two connecting beams 123 are connected to form a gate-shaped structure. The ends of the two connecting beams 123 away from the cross beam 121 are respectively hinged to the relatively outer sides of the upper end of the bucket body 110.
[0048] In one embodiment, if Figure 1 As shown, the hopper 10 also includes a plurality of legs 140, which are circumferentially spaced apart on the outside of the hopper body 110, and vertically, the lower ends of the legs 140 are lower than the discharge port 1102. The legs 140 can stably support the hopper body 110 on the ground when the hopper 10 is not in use or in the process of receiving concrete.
[0049] In one embodiment, if Figure 1 and Figure 3 As shown, the inner diameter of the cylindrical retaining ring 230 gradually decreases from top to bottom, so that when it is used, after the material distribution hopper cone 20 is hung on the top of the culvert template, the lower end of the cylindrical retaining ring 230 falls into the template.
[0050] Specifically, the cylindrical retaining ring 230 is made by rolling a 10mm thick steel plate into a truncated cone in a processing workshop. The diameter of the small end of the cone is 1mm-2mm smaller than the outer diameter of the prefabricated culvert. The height of the cone is 65cm, and the diameter of the large end of the cone is 48cm higher than the diameter of the small end, which ensures that the angle between the inclined surface of the cone and the vertical is 20°; the bottom surface of the cylindrical retaining ring 230 is 5cm lower than the bottom of the main body 210.
[0051] The installation of the partition plate 240 requires that the cylindrical retaining ring 230 be positioned, and then a 10 mm thick and 45 cm wide steel plate be cut on site according to the distance between the cylindrical retaining ring 230 and the main body 210; ensure that the upper edge of the partition plate 240 is 5 cm lower than the annular vertical support, and that 10 partition plates 240 are evenly distributed along the circumference of the main body 210.
[0052] In one embodiment, if Figure 1 and Figure 3 As shown, a lifting hole 2201 is provided at the upper end of the top rod 220 to facilitate the lifting of the material distribution bucket cone 20 by the lifting equipment. Specifically, the size of the lifting hole 2201 is
[0053] In one embodiment, if Figure 1 and Figure 3 As shown, the body 210 comprises a cone or conical shell with a pointed end facing upward.
[0054] Specifically, when the main body 210 is manufactured, a thick steel plate is rolled into a cone in a processing workshop, the diameter of the bottom circle of the cone is consistent with the inner diameter of the prefabricated culvert, and the height of the cone is equal to the radius of the bottom circle of the cone.
[0055] In the embodiment of the present application, the hopper 10 and the hopper cone 20 of the precast concrete culvert material distribution device can be welded with commonly used Q345 steel plates and steel sections. The manufacturing process is simple and can be reused, which is both economical and environmentally friendly.
[0056] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0057] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.
Claims
1. A precast concrete pipe culvert material placing device, characterized in that: include: A hopper, comprising a bucket body, a hanger and a discharge valve, wherein a loading port is arranged at the top of the bucket body, and a discharge port is arranged at the bottom of the bucket body; the hanger is arranged at the upper end of the bucket body, and is used for lifting the bucket body by a lifting device; the discharge valve is located in the bucket body, and the discharge valve comprises a valve cover and a guide shaft, and in the vertical direction, the projection area of the valve cover is larger than the projection area of the discharge port, the valve cover is arranged on the discharge port, the lower end of the guide shaft is fixed on the valve cover, a bracket is arranged inside the bucket body, and the guide shaft is slidably connected with the bracket in the vertical direction; and The distribution hopper cone includes a main body with a conical surface, a push rod arranged at the tip of the main body, a cylindrical retaining ring sleeved on the outside of the large end of the main body and spaced from the main body, and a plurality of partition plates uniformly connected along the circumferential direction between the inner side of the cylindrical retaining ring and the main body, and the push rod is used to push open the valve cover to open the discharge port.
2. The precast concrete pipe culvert material placing device according to claim 1, characterized in that: The lower end of the bucket body is tapered.
3. The precast concrete pipe culvert material placing device according to claim 2, characterized in that: The bucket body includes an upper bucket body and a lower bucket body connected in sequence from top to bottom, the upper bucket body is a cylindrical barrel, the top opening of the cylindrical barrel forms the loading port, and the lower bucket body is a truncated cone barrel with a small end facing downward, and the small end opening of the truncated cone barrel forms the unloading port.
4. The precast concrete pipe culvert material placing device according to claim 1, characterized in that: The hanger comprises a crossbeam, a lifting lug arranged in the middle of the crossbeam and two connecting beams connected to both ends of the crossbeam. One end of the two connecting beams away from the crossbeam is respectively hinged to the opposite outer sides of the upper end of the bucket body.
5. The precast concrete pipe culvert material placing device according to claim 1, characterized in that: The hopper further comprises a plurality of legs, which are circumferentially spaced apart and arranged on the outside of the hopper body, and vertically, the lower ends of the legs are lower than the discharge port.
6. The precast concrete pipe culvert material placing device according to claim 1, characterized in that: The inner diameter of the cylindrical retaining ring gradually decreases from top to bottom.
7. The precast concrete pipe culvert material placing device according to claim 1, characterized in that: The upper end of the top rod is provided with a hanging hole.
8. The precast concrete pipe culvert material placing device according to claim 1, characterized in that: The main body comprises a cone or a conical shell with a pointed end facing upward.