Prefabricated bridge deck slab production concrete preparation premixing equipment
By installing a screen and a stirring device in the premixing device, the problem that the existing device cannot remove lumps and impurities is solved, and uniform mixing of concrete materials and quality improvement are achieved.
Patent Information
- Application Number
- CN202422793349.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-15
AI Technical Summary
The existing concrete premixing device has a simple structure and cannot effectively remove lumps and impurities in the material during the mixing process, which affects the quality of the concrete.
A screen and a stirring device are installed in the premixing box. The material is screened while stirring. The screen is used to retain lumps and impurities on the upper side, and is cleaned through the traction shaft and cleaning port. A cleaning brush is used to prevent the screen from being blocked.
It effectively removes lumps and impurities during the concrete mixing process, ensures material uniformity, and improves concrete quality.
Smart Images
Figure CN223354568U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete preparation, in particular to a concrete preparation and premixing device for producing prefabricated bridge panels. Background Art
[0002] Concrete is one of the most important civil engineering materials in contemporary times. It is an artificial stone made of cementitious materials, granular aggregates (also called aggregates), water, and admixtures and additives added in a certain proportion, which are evenly mixed, compacted into shapes, and cured and hardened. Concrete has the characteristics of abundant raw materials, low price, and simple production process, which leads to its increasing usage. At the same time, concrete also has the characteristics of high compressive strength, good durability, and a wide range of strength grades. Prefabricated bridge decks are basically made of concrete materials.
[0003] During the processing of existing prefabricated bridge deck concrete, in order to ensure the quality of the concrete, multiple materials need to be mixed in advance before adding water to ensure that the materials are mixed evenly. The existing concrete premixing device has a simple structure and only has a mixing function. It is unable to screen out lumps and impurities in the materials while mixing, which easily affects the quality of the concrete.
[0004] In response to the above problems, the present application proposes a pre-mixing device for preparing concrete for prefabricated bridge deck production. Utility Model Content
[0005] 1. Technical Problems Solved
[0006] The technical problem to be solved by the utility model is that the existing concrete premixing device has a single structure and cannot screen out lumps and impurities in the materials while mixing.
[0007] 2. Technical Solution
[0008] In order to solve the above technical problems, the present invention provides a technical solution: a pre-mixing device for preparing concrete for precast bridge deck production, comprising a pre-mixing box, a support frame being installed on the outer side of the lower portion of the pre-mixing box, a feed trough being connected through one side of the upper side wall of the pre-mixing box, and a discharge pipe being provided at the bottom of the pre-mixing box;
[0009] A screen is fixedly installed on the lower part of the inner wall of the premixing box, and multiple groups of cleaning ports are provided on the side wall of the premixing box and above the screen. Baffles are installed on the outside of the cleaning ports. A traction shaft is installed through the center of the screen. A rotating drum is rotatably installed at the center of the top of the premixing box. The upper end of the traction shaft passes through the rotating drum and is equipped with a handle.
[0010] A connecting cylinder is slidingly sleeved on the outer side of the lower part of the rotating drum, multiple sets of mounting strips are installed on the outer wall of the connecting cylinder, a cleaning brush is installed on the lower side of the mounting strip, multiple sets of stirring shafts are installed on the outer wall of the rotating drum and above the connecting cylinder, and a driving assembly that drives the rotating drum to rotate is installed on the top of the premixing box.
[0011] As an improvement, the screen is made of tough plastic material and a support ring is installed at the edge. A mounting ring is fixedly installed on the lower part of the inner wall of the premixing box, and the support ring and the mounting ring are fixedly connected with bolts.
[0012] As an improvement, an annular connecting plate is installed on the outer wall of the rotating cylinder and located at the lower inner side of the connecting cylinder. A spring is connected between the upper side of the annular connecting plate and the top of the connecting cylinder, and the spring is sleeved on the outer side of the rotating cylinder.
[0013] As an improvement, a bearing is installed through the top of the premixing box, and the rotating drum is installed through the inside of the bearing.
[0014] As an improvement, the drive assembly includes a motor installed on the top of the premixing box, the motor shaft end faces upward and is installed with gear 2, and the outer side of the upper part of the rotating drum is installed with gear 1 meshing with gear 2.
[0015] As an improvement, a control switch connected to the motor is installed on the outer wall of the premixing box.
[0016] As an improvement, the lower end of the traction shaft is connected to a support shaft, a support platform for supporting the lower end of the support shaft is provided at the center of the bottom of the premixing box, and a mounting frame for positioning the support platform is installed on the inner wall of the premixing box.
[0017] 3. Beneficial Effects
[0018] Compared with the prior art, the utility model has the following advantages: a screen is installed on the lower side of the stirring device inside the premixing box, and the concrete material is stirred and screened by the stirring device and the screen, so that lumps and impurities in the material are left on the upper side of the screen. By pulling the traction shaft upward, the center of the screen is driven to move upward, so that the lumps and impurities are conveniently sent to the cleaning port for cleaning. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 The utility model is a schematic diagram of the upper structure of a concrete premixing and pre-mixing device for producing prefabricated bridge panels.
[0020] Figure 2 This is a schematic diagram of the lower structure of a concrete premixing and pre-mixing device for producing prefabricated bridge panels according to the present invention.
[0021] Figure 3 The utility model is a schematic diagram of the structure of a premixing box of concrete premixing equipment for producing precast bridge panels.
[0022] Figure 4 The utility model is a schematic diagram of the screen connection structure of a concrete premixing device for producing precast bridge decks.
[0023] Figure 5 The utility model is a schematic diagram of the outer structure of a rotating drum of a concrete premixing device for producing precast bridge decks.
[0024] Figure 6 The utility model is a schematic diagram of the cross-sectional structure of a rotating drum of a concrete premixing device for producing precast bridge decks.
[0025] As shown in the figure: 1. Premix box; 2. Support frame; 3. Feed trough; 4. Discharge pipe; 5. Screen; 6. Support ring; 7. Mounting ring; 8. Traction shaft; 9. Handle; 10. Rotating drum; 11. Stirring shaft; 12. Connecting cylinder; 13. Mounting strip; 14. Cleaning brush; 15. Annular connecting plate; 16. Spring; 17. Gear 1; 18. Motor; 19. Gear 2; 20. Control switch; 21. Cleaning port; 22. Baffle; 23. Support shaft; 24. Support platform; 25. Mounting frame. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0027] Example 1
[0028] As attached Figure 1 and attached Figure 2 As shown, a concrete premixing equipment for precast bridge deck production includes a premixing box 1, a support frame 2 is installed on the outer side of the lower part of the premixing box 1, a feed trough 3 is connected to one side of the upper side wall of the premixing box 1, and a discharge pipe 4 is provided at the bottom of the premixing box 1. Various concrete materials are delivered to the premixing box 1 through the feed trough 3, and the mixed concrete materials are discharged from the discharge pipe 4.
[0029] As attached Figure 3 and attached Figure 5 As shown, a rotating drum 10 is rotatably installed at the center of the top of the premixing box 1, and multiple groups of stirring shafts 11 are installed on the outer wall of the rotating drum 10. A bearing is installed through the top of the premixing box 1, and the rotating drum 10 is installed inside the bearing so that the rotating drum 10 can rotate stably. A driving assembly for driving the rotating drum 10 to rotate is installed on the top of the premixing box 1.
[0030] The drive assembly includes a motor 18 installed on the top of the premixing box 1, the shaft end of the motor 18 faces upward and is installed with a gear 2 19, a gear 17 meshing with the gear 2 19 is installed on the outer side of the upper part of the rotating drum 10, and a control switch 20 connected to the motor 18 is installed on the outer wall of the premixing box 1.
[0031] With the above structure, the motor 18 is started by controlling the switch 20, the motor 18 drives the gear 2 19 to rotate, the gear 2 19 drives the gear 1 17 and the drum 10 to rotate, and the drum 10 drives the multiple sets of stirring shafts 11 to rotate inside the premixing tank 1 to mix multiple concrete materials.
[0032] As attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 and attached Figure 4 As shown, a screen 5 is fixedly installed on the lower part of the inner wall of the premixing box 1, a traction shaft 8 is installed through the center of the screen 5, the screen 5 is made of tough plastic material, and a support ring 6 is installed on the edge, a mounting ring 7 is fixedly installed on the lower part of the inner wall of the premixing box 1, the support ring 6 and the mounting ring 7 are fixedly connected with bolts, the upper end of the traction shaft 8 passes through the rotating drum 10 and is installed with a handle 9, a plurality of cleaning ports 21 are provided on the side wall of the premixing box 1 and located above the screen 5, and a baffle 22 is installed on the outside of the cleaning port 21;
[0033] Through the above structure, after the screening is completed, the handle 9 is held to pull the traction shaft 8 upward, and the traction shaft 8 drives the center of the screen 5 to move upward, so that the screen 5 is deformed into a frustum, and the lumps and impurities are rolled down to the cleaning port 21, the baffle 22 is removed, and the lumps and impurities are cleaned out of the premix box 1 through the multiple groups of cleaning ports 21.
[0034] As attached Figure 6 As shown, a connecting cylinder 12 is slidably sleeved on the outer side of the lower part of the rotating drum 10, and multiple sets of mounting strips 13 are installed on the outer wall of the connecting cylinder 12. A cleaning brush 14 is installed on the lower side of the mounting strips 13. An annular connecting plate 15 is installed on the outer wall of the rotating drum 10 and located at the lower inner side of the connecting cylinder 12. A spring 16 is connected between the upper side of the annular connecting plate 15 and the top of the connecting cylinder 12, and the spring 16 is sleeved on the outside of the rotating drum 10.
[0035] Through the above structure, the connecting cylinder 12 can move up and down outside the rotating cylinder 10, and is restricted by the limit slide bar in the horizontal direction, and is not easy to rotate, thereby protecting the spring 16. When the screen 5 is screened, the rotating cylinder 10 drives the connecting cylinder 12 and the cleaning brush 14 to rotate. The cleaning brush 14 continuously drives the agglomerates and impurities on the upper side of the screen 5, and cleans the screen 5 in time to prevent the screen 5 from being blocked and affecting the feeding speed.
[0036] When the center of the screen 5 moves upward, the screen 5 pushes the cleaning brush 14 to move upward, and the mounting bar 13 on the upper side of the cleaning brush 14 drives the connecting cylinder 12 to move upward on the outside of the rotating drum 10. At this time, the spring 16 is pulled and expanded. When the screen 5 returns to its original position, the rebound force of the spring 16 moves the connecting cylinder 12 and the cleaning brush 14 forward, so that the cleaning brush 14 is attached to the upper side of the screen 5 to facilitate the cleaning of lumps and impurities.
[0037] Example 2
[0038] Based on the first embodiment, please refer to the attached Figure 3 and attached Figure 4 The lower end of the traction shaft 8 is connected to a support shaft 23, and a support platform 24 for supporting the lower end of the support shaft 23 is provided at the center of the bottom of the premix box 1. A mounting frame 25 for positioning the support platform 24 is installed on the inner wall of the premix box 1.
[0039] Through the above-mentioned structure of Example 2, the support shaft 23 is supported on the upper side of the support platform 24, so that the center of the screen 5 has better support when screening materials, preventing the screen 5 from deforming downward when a large amount of material is accumulated on the upper side, causing the cleaning brush 14 to not contact the screen 5, affecting the cleaning effect of the screen 5.
[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
[0042] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without inventive design, a structure and embodiment similar to the technical solution should fall within the scope of protection of the present invention.
Claims
1. A concrete premixing equipment for producing precast bridge decks, comprising a premixing box (1), a support frame (2) being installed on the outer side of the lower portion of the premixing box (1), a feed trough (3) being passed through one side of the upper side wall of the premixing box (1), and a discharge pipe (4) being provided at the bottom of the premixing box (1), characterized in that: A screen (5) is fixedly mounted on the lower portion of the inner wall of the premixing box (1); a plurality of cleaning ports (21) are provided on the side wall of the premixing box (1) and located above the screen (5); baffles (22) are mounted on the outside of the cleaning ports (21); a traction shaft (8) is mounted through the center of the screen (5); a rotating drum (10) is rotatably mounted at the center of the top of the premixing box (1); the upper end of the traction shaft (8) passes through the rotating drum (10) and is mounted with a handle (9); A connecting cylinder (12) is slidably sleeved on the outer side of the lower portion of the rotating cylinder (10), a plurality of mounting strips (13) are mounted on the outer wall of the connecting cylinder (12), a cleaning brush (14) is mounted on the lower side of the mounting strips (13), a plurality of stirring shafts (11) are mounted on the outer wall of the rotating cylinder (10) and above the connecting cylinder (12), and a driving assembly for driving the rotating cylinder (10) to rotate is mounted on the top of the premixing tank (1).
2. The concrete premixing equipment for precast bridge deck production according to claim 1, characterized in that: The screen (5) is made of tough plastic material and is provided with a support ring (6) at its edge. A mounting ring (7) is fixedly installed on the lower portion of the inner wall of the premixing box (1). The support ring (6) and the mounting ring (7) are fixedly connected with bolts.
3. The concrete premixing equipment for precast bridge deck production according to claim 1, characterized in that: An annular connecting plate (15) is installed on the outer wall of the rotating drum (10) and located at the lower inner side of the connecting drum (12). A spring (16) is connected between the upper side of the annular connecting plate (15) and the top of the connecting drum (12). The spring (16) is sleeved on the outer side of the rotating drum (10).
4. The concrete premixing equipment for precast bridge deck production according to claim 1, characterized in that: A bearing is installed through the top of the premixing box (1), and the rotating drum (10) is installed through the inside of the bearing.
5. The concrete premixing equipment for precast bridge deck production according to claim 1, characterized in that: The driving assembly comprises a motor (18) mounted on the top of the premixing box (1), the shaft end of the motor (18) faces upward and is mounted with a second gear (19), and the outer side of the upper portion of the rotating drum (10) is mounted with a first gear (17) meshing with the second gear (19).
6. The concrete premixing equipment for producing precast bridge decks according to claim 5, characterized in that: A control switch (20) connected to the motor (18) is installed on the outer wall of the premixing box (1).
7. The concrete premixing equipment for precast bridge deck production according to claim 1, characterized in that: The lower end of the traction shaft (8) is connected to a support shaft (23); a support platform (24) for supporting the lower end of the support shaft (23) is provided at the center of the bottom of the premixing box (1); and a mounting frame (25) for positioning the support platform (24) is installed on the inner wall of the premixing box (1).