Test piece forming device for asphalt mixture
By using guide frames and cover films to seal in the asphalt mixture specimen molding device, and using the automated structure of rolling rollers and electromagnetic sheets, the problems of uneven density of asphalt mixture specimen and crushing stones in the prior art are solved. , achieving more efficient specimen molding and automated production.
Patent Information
- Application Number
- CN202420610007.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-27
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-03-27
AI Technical Summary
In the existing asphalt mixture specimens preparation methods, it is difficult to simulate the actual road construction and rolling process, resulting in uneven density of specimens after forming and stone may be broken, affecting the quality of specimens.
A test piece forming device for asphalt mixture is designed, including a test mold, a guide frame, a cover film and a rolling roller. By gradually lowering and moving back and forth, the rolling rollers are used to force the guide frame to realize the asphalt mixture. The sealing and rolling compaction ensures that the mixture does not fall during the rolling process, and realizes automatic lifting of the cladding assembly through the combination of electromagnetic sheets and guide blocks.
The molding quality of asphalt mixture is improved, the density uniformity of the specimen is ensured, the scope of application of specimen thickness is expanded, and manpower is saved through automated structures and production efficiency is improved.
Smart Images
Figure CN222232144U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of asphalt mixture specimen preparation, and more specifically to a specimen forming device for asphalt mixture. Background Art
[0002] Asphalt mixture specimens are mainly used for asphalt mixture design and verification of physical and mechanical properties. They are the key carriers for asphalt mixture design, production and performance verification. Whether they can truly reflect the actual situation of the project is particularly critical.
[0003] When preparing asphalt mixture specimens, the heated asphalt mixture is generally placed in the test mold at one time, and then the mixture is compacted from top to bottom using a counterweight pressure head. The compaction method is difficult to simulate the actual road construction rolling process well, and the compaction hammer may also cause stone crushing. The difference in compaction quality will affect the quality of specimen production, resulting in uneven density of various parts of the formed specimen.
[0004] Therefore, we propose a specimen forming device for asphalt mixture to address the above problems. Utility Model Content
[0005] The utility model aims to solve the existing practical problems. Compared with the prior art, a specimen forming device for asphalt mixture is provided. When working, a certain amount of asphalt mixture is first placed inside the test mold according to manufacturing needs, and the asphalt mixture is higher than a certain height from the top of the test mold. Then, a guide frame is sleeved on the top of the test mold, and a covering film is coated on the top of the asphalt mixture to seal the asphalt mixture, so as to prevent the asphalt mixture slightly higher than the top of the test mold from falling out of the test mold during the back and forth rolling process. The covering film on the guide frame is rolled and forced by a rolling roller that gradually descends and reciprocates back and forth. The guide frame is gradually pushed downward under the action of the force, so as to achieve rolling and compacting of the asphalt mixture on the inner side of the covering film.
[0006] The purpose of the utility model can be achieved through the following technical solutions:
[0007] A test specimen molding device for asphalt mixture, comprising an operating table, a test mold is fixedly installed on the upper end of the operating table, electric guide rails 1 are fixedly installed at the four corners of the upper end of the operating table, a crossbeam is installed between a pair of electric guide rails 1 arranged front and back oppositely, a front and rear electric guide rail 2 is installed between a pair of left and right crossbeams, a T-shaped frame is installed horizontally between the pair of electric guide rails 2, a rolling roller located above the test mold is installed at the bottom end of the T-shaped frame, and a covering component located below the rolling roller is sleeved on the top of the test mold;
[0008] The coating assembly includes a guide frame movably sleeved on the top end of the test mold, the inner side wall of the guide frame near the top end is fixedly connected to a buffer pad arranged to abut against the upper end wall of the test mold, the inner side wall of the buffer pad is arranged flush with the inner wall of the test mold, and the inner wall of the top end of the guide frame is covered with a covering film located on the outside of the buffer pad.
[0009] Furthermore, the bottom end of the T-shaped frame is fixedly connected to a U-shaped frame connected to a rolling roller, and the rolling roller includes a fixed sleeve fixed to the lower end wall of the U-shaped frame, and a roller body is rotatably installed in the fixed sleeve.
[0010] Furthermore, the lower ends of the front and rear sides of the U-shaped frame are provided with hollow grooves, and guide blocks are sleeved in the hollow grooves. The upper end walls of the front and rear sides of the guide frame are provided with guide grooves matching the guide blocks, and the lower ends of the guide blocks slide in the guide grooves.
[0011] Furthermore, the top end of the guide block passes through the hollow groove and is fixedly connected to the top wall of the hollow groove through a buffer pad. The bottom ends of the pair of guide blocks are made of magnetic material. The inner bottom of the guide groove at the middle position is embedded with an electromagnetic sheet matching the guide block. The U-shaped frame and the guide frame are arranged to be magnetically installed. When the specimen forming work is completed, the rolling roller and the U-shaped frame matching structure are moved to the middle position of the coating assembly under the action of a pair of electric guide rails. At this time, the electromagnetic sheet is started, and the magnetic attraction of the electromagnetic sheet to the guide block is utilized, so that when the rolling roller is driven to rise by the electric guide rail, the coating assembly can be lifted upward together.
[0012] Furthermore, guide cylinders are fixedly connected to the four corners of the lower end of the guide frame, a compression spring is fixedly connected to the top of the guide cylinder, and guide rods corresponding to the positions of the guide cylinders are fixedly connected to the four corners of the upper end of the operating table. The outer diameter of the guide rod is consistent with the inner diameter of the guide cylinder, and multiple guide cylinders correspond to multiple guide rods one by one. The guide cylinders are sleeved on the guide rods. After completing the positioning work, the rolling roller is pressed down and moved horizontally. The guide frame moves downward gradually under the extrusion action, and multiple matching structures of guide cylinders and guide rods are added to further play a guiding and buffering role for the lifting and lowering activities of the cladding components.
[0013] Furthermore, a supporting plate sealed and connected with the inner wall is slidably mounted on the inner bottom wall of the test mold, a hollow cavity matching the supporting plate is opened on the end wall of the operating table, a base is arranged under the operating table, the lower end of the supporting plate passes through the hollow cavity and extends into the base, an electric push cylinder for lifting the supporting plate is installed in the base, and a supporting plate that can move up and down is added at the bottom of the test mold, so that test pieces of different thicknesses can be manufactured according to different needs, thereby expanding the scope of application.
[0014] Compared with the prior art, the advantages of the present invention are:
[0015] (1) This scheme adds a covering component to the upper end of the test mold. The covering component consists of a guide frame, a covering film, a buffer pad and other structures. When working, first, a certain amount of asphalt mixture is placed inside the test mold according to manufacturing requirements, and the asphalt mixture is higher than a certain height of the top of the test mold. Then, the guide frame is sleeved on the top of the test mold, and the covering film is wrapped around the top of the asphalt mixture to seal the asphalt mixture to prevent the asphalt mixture slightly higher than the top of the test mold from falling out of the test mold during the back and forth rolling process. The covering film on the guide frame is rolled and forced by a rolling roller that gradually descends and reciprocates back and forth. The guide frame is gradually pushed downward under the force, so that the asphalt mixture on the inner side of the covering film is rolled and compacted.
[0016] (2) This scheme sets the covering film as a flexible structure, which is conducive to the rolling roller transferring the rolling force to the asphalt mixture through the covering film. It helps to improve the molding quality of the asphalt mixture by sealing the asphalt mixture. In addition, a supporting plate that can move up and down is added at the bottom of the test mold, so that test pieces of different thicknesses can be manufactured according to different needs, thereby expanding the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model;
[0018] Figure 2 The structure of the utility model after the rolling roller and the coating assembly are lifted outwards is schematically shown. Figure 1 ;
[0019] Figure 3 The structure of the utility model after the rolling roller and the coating assembly are lifted outwards is schematically shown. Figure 2 ;
[0020] Figure 4 It is a partial cross-sectional view of the coating joint of the utility model;
[0021] Figure 5 for Figure 4 Schematic diagram of the structure at A in FIG.
[0022] Figure 6 It is a cross-sectional view of the utility model when working.
[0023] Description of the numbers in the figure:
[0024] 1. Operating table; 2. Trial mold; 3. Coating assembly; 31. Guide frame; 311. Guide groove; 32. Covering film; 33. Buffer pad; 34. Guide cylinder; 35. Compression spring; 4. Electric guide rail 1; 5. Crossbeam; 6. Electric guide rail 2; 7. T-frame; 8. Rolling roller; 9. U-frame; 901. Guide block; 10. Support plate; 11. Electric push cylinder; 12. Guide rod; 13. Base. DETAILED DESCRIPTION
[0025] The following will combine the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the utility model belong to the scope of protection of the utility model.
[0026] Embodiment 1:
[0027] The utility model discloses a test piece forming device for asphalt mixture, please refer to Figure 1 , including an operating table 1, a test mold 2 is fixedly installed on the upper end of the operating table 1, electric guide rails 4 are fixedly installed at the four corners of the upper end of the operating table 1, a crossbeam 5 is installed between a pair of electric guide rails 4 arranged opposite to each other front and back, a front and rear electric guide rail 2 6 is installed between a pair of crossbeams 5 arranged left and right, a T-frame 7 is installed for horizontal transmission between the pair of electric guide rails 2 6, a rolling roller 8 located above the test mold 2 is installed at the bottom end of the T-frame 7, a U-frame 9 connected to the rolling roller 8 is fixedly connected to the bottom end of the T-frame 7, and the rolling roller 8 includes a fixed sleeve fixed at the lower end wall of the U-frame 9, and a roller body is rotatably installed in the fixed sleeve.
[0028] See also Figure 2-Figure 3 The top end of the test mold 2 is sleeved with a coating assembly 3 located below the rolling roller 8, and the coating assembly 3 includes a guide frame 31 movably sleeved on the top end of the test mold 2, and the inner side wall of the guide frame 31 near the top is fixedly connected with a buffer pad 33 set against the upper end wall of the test mold 2, and the inner side wall of the buffer pad 33 is flush with the inner wall of the test mold 2. The inner wall of the top end of the guide frame 31 is covered with a covering film 32 located outside the buffer pad 33, and the length of the rolling roller 8 is greater than the width of the covering film 32.
[0029] See also Figure 6 When working, first, according to the manufacturing needs, the quantitative heated asphalt mixture is placed inside the test mold 2, and the asphalt mixture is higher than a certain height of the top of the test mold 2, and then the covering component 3 is sleeved on the top of the test mold 2, the inner wall of the guide frame 31 and the outer end wall of the test mold 2 are movably sleeved, the buffer pad 33 is against the upper end wall of the test mold 2, and the covering film 32 is covered on the top of the asphalt mixture to seal the asphalt mixture, so as to prevent the asphalt mixture slightly higher than the top of the test mold 2 from falling out of the test mold 2 during the back and forth rolling process;
[0030] The rolling roller 8 is lowered to its bottom by the electric guide rail 1-4 and abutted against the upper end wall of the covering film 32. The rolling roller 8 is driven to move back and forth by the electric guide rail 2-6. The rotating roller body transmits the rolling force to the asphalt mixture through the covering film 32. After a back and forth rolling, the rolling roller 8 is lowered to a certain height by the electric guide rail 1-4, and this reciprocating process is used to achieve multiple descent-back and forth rolling actions. The guide frame 31 is gradually pushed downward under the action of the force, and the buffer pad 33 is compressed. The setting of the buffer pad 33 is conducive to the asphalt mixture on the inner side of the guide frame 31 to overflow outward during the rolling process.
[0031] The inner bottom wall of the test mold 2 is slidably mounted with a supporting plate 10 which is sealed and connected with the inner wall thereof; a hollow cavity matching the supporting plate 10 is opened on the end wall of the operating table 1; a base 13 is arranged under the operating table 1; the lower end of the supporting plate 10 passes through the hollow cavity and extends into the base 13; an electric push cylinder 11 for lifting the supporting plate 10 is installed in the base 13; a supporting plate 10 which can move up and down is added at the bottom of the test mold 2; test pieces of different thicknesses can be manufactured according to different needs, thereby expanding the scope of application.
[0032] Embodiment 2:
[0033] See also Figure 2-Figure 5 The lower ends of the front and rear sides of the U-shaped frame 9 are provided with hollow grooves, and guide blocks 901 are sleeved in the hollow grooves. The upper end walls of the front and rear sides of the guide frame 31 are provided with guide grooves 311 matching the guide blocks 901. The lower end of the guide block 901 is slidably installed in the guide groove 311. The top of the guide block 901 passes through the hollow groove and is fixedly connected to the top wall of the hollow groove through a buffer pad. The buffer pad has a certain thickness and is installed in the hollow groove. In the natural state, the bottom of 901 is slightly lower than the bottom wall of the roller body on 8. After 8 is pressed down until its bottom end wall is in contact with 32, 901 can stably abut against the inner bottom wall of 311, which plays a certain compensation role for the ups and downs of 901 during the rolling work.
[0034] The bottom ends of a pair of guide blocks 901 are made of magnetic material, and the inner bottom of the guide groove 311 located in the middle position is embedded with an electromagnetic sheet matching the guide block 901, and the U-shaped frame 9 and the guide frame 31 are arranged to be magnetically installed. When the specimen forming work is completed, the rolling roller 8 and the U-shaped frame 9 are coordinated and moved to the middle position of the coating component 3 under the action of a pair of electric guide rails 6. At this time, the electromagnetic sheet is started, and the magnetic attraction of the electromagnetic sheet on the guide block 901 is utilized, so that when the rolling roller 8 is driven to rise by the electric guide rail 4, the coating component 3 can be lifted upward at the same time. Therefore, when the formed specimen is removed, there is no need to manually disassemble the coating component 3, saving manpower.
[0035] The four corners of the lower end of the guide frame 31 are fixedly connected to guide cylinders 34, and the top of the guide cylinders 34 is fixedly connected to compression springs 35. The four corners of the upper end of the operating table 1 are fixedly connected to guide rods 12 corresponding to the positions of the guide cylinders 34. The outer diameter of the guide rods 12 is consistent with the inner diameter of the guide cylinders 34. When working, firstly, a certain amount of asphalt mixture is placed inside the test mold 2 according to manufacturing needs, and the asphalt mixture is higher than the top of the test mold 2 by a certain height, and then the guide frame 31 is sleeved on the top of the test mold 2, and the covering film 32 is covered on the top of the asphalt mixture. Multiple guide cylinders 34 correspond to multiple guide rods 12 one by one, and the guide cylinders 34 are sleeved on the guide rods 12.
[0036] See also Figure 6 After completing the positioning work, the rolling roller 8 is pressed down and moved horizontally, and the guide frame 31 moves downward step by step under the extrusion action. A plurality of guide cylinders 34 and the matching structure of the guide rod 12 are added to further play a guiding and buffering role for the lifting and lowering activities of the cladding component 3.
[0037] In combination with Example 1 and Example 2, the working process and principle of the utility model are as follows:
[0038] First, according to the manufacturing needs, the quantitatively heated asphalt mixture is placed inside the test mold 2, and the asphalt mixture is higher than a certain height of the top of the test mold 2. The covering component 3 initially positioned below the U-shaped frame 9 is sleeved on the top of the test mold 2 through the electric guide rail 4, the inner wall of the guide frame 31 is movably sleeved with the outer end wall of the test mold 2, the buffer pad 33 is against the upper end wall of the test mold 2, and the covering film 32 is covered on the top of the asphalt mixture;
[0039] After the positioning of the coating assembly 3 and the test mold 2 is completed, the rolling roller 8 is lifted upward and moved to the side of the test mold 2, and the rolling roller 8 is lowered again until it abuts against the upper end wall of the guide frame 31, and the rolling roller 8 is driven to move back and forth by the electric guide rail 2 6. The rotating roller body transmits the rolling force to the asphalt mixture through the covering film 32. After a back and forth rolling, the rolling roller 8 is lowered to a certain height by the electric guide rail 1 4, and this reciprocating process is realized to achieve multiple lowering-back and forth rolling effects. The guide frame 31 is gradually pushed downward under the force applied, so as to achieve the rolling and compaction of the asphalt mixture inside the covering film 32;
[0040] After cooling and forming, the rolling roller 8 and the U-shaped frame 9 are moved to the middle position of the coating component 3 under the action of a pair of electric guide rails 6. At this time, the electromagnetic sheet is started and the magnetic attraction of the electromagnetic sheet to the guide block 901 is utilized so that when the rolling roller 8 is driven up by the electric guide rail 4, the coating component 3 can be lifted upward at the same time. Finally, the support plate 10 is lifted upward by the electric push cylinder 11 to eject the formed specimen.
[0041] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the utility model according to the technical solution and improved ideas of the utility model, which should be included in the protection scope of the utility model.
Claims
1. A test specimen molding device for asphalt mixture, comprising an operating table (1), a test mold (2) being fixedly mounted on the upper end of the operating table (1), characterized in that: The four corners of the upper end of the operating table (1) are all fixedly installed with electric guide rails (4), a crossbeam (5) is installed between a pair of electric guide rails (4) arranged front and rear, a pair of electric guide rails (6) arranged front and rear are installed between the pair of crossbeams (5) arranged left and right, a T-shaped frame (7) is installed horizontally between the pair of electric guide rails (6), a rolling roller (8) located above the test mold (2) is installed at the bottom end of the T-shaped frame (7), and a coating component (3) located below the rolling roller (8) is sleeved on the top end of the test mold (2); The coating assembly (3) comprises a guide frame (31) movably sleeved on the top end of the test mold (2); the inner side wall of the guide frame (31) close to the top end is fixedly connected to a buffer pad (33) arranged to abut against the upper end wall of the test mold (2); the inner side wall of the buffer pad (33) is arranged flush with the inner wall of the test mold (2); and the inner wall of the top end of the guide frame (31) is covered with a covering film (32) located outside the buffer pad (33).
2. A specimen forming device for asphalt mixture according to claim 1, characterized in that: The bottom end of the T-shaped frame (7) is fixedly connected to a U-shaped frame (9) connected to a rolling roller (8); the rolling roller (8) comprises a fixed sleeve fixed to the lower end wall of the U-shaped frame (9); a roller body is rotatably mounted in the fixed sleeve.
3. A specimen forming device for asphalt mixture according to claim 2, characterized in that: The lower ends of the front and rear sides of the U-shaped frame (9) are provided with hollow grooves, and guide blocks (901) are sleeved in the hollow grooves. The upper end walls of the front and rear sides of the guide frame (31) are provided with guide grooves (311) matching the guide blocks (901), and the lower ends of the guide blocks (901) slide in the guide grooves (311).
4. A specimen forming device for asphalt mixture according to claim 3, characterized in that: The top end of the guide block (901) passes through the hollow groove and is fixedly connected to the top wall of the hollow groove through a buffer pad. The bottom ends of a pair of guide blocks (901) are both made of magnetic material. An electromagnetic sheet matching the guide block (901) is embedded and installed on the inner bottom of the guide groove (311) at the middle position.
5. The test specimen forming device for asphalt mixture according to claim 1, characterized in that: The four corners of the lower end of the guide frame (31) are fixedly connected to guide cylinders (34), the top of the guide cylinder (34) is fixedly connected to a compression spring (35), and the four corners of the upper end of the operating table (1) are fixedly connected to guide rods (12) corresponding to the positions of the guide cylinders (34), and the outer diameter of the guide rods (12) is consistent with the inner diameter of the guide cylinder (34).
6. The test specimen forming device for asphalt mixture according to claim 1, characterized in that: A support plate (10) is slidably mounted on the inner bottom wall of the test mold (2) and is sealed and connected to the inner wall thereof; a hollow cavity matching the support plate (10) is opened on the end wall of the operating table (1); a base (13) is arranged below the operating table (1); the lower end of the support plate (10) passes through the hollow cavity and extends into the base (13); an electric push cylinder (11) for lifting and lowering the support plate (10) is installed in the base (13).