Test block pouring device and method for testing adhesive property of reinforced concrete

Abstract

The invention discloses a test block pouring device and method for testing the bonding performance of reinforced concrete, and belongs to the technical field of concrete test block preparation, the test block pouring device comprises a bottom plate, a bottom plate, a bottom plate and a bottom plate, the upper part of the bottom plate is vertically connected with a frame body; the multiple pouring plates are arranged in an arrayed mode; the pouring pipe is vertically arranged in the middle of the upper end face of the frame body, and a cover plate is arranged above the pouring plate in a sealed mode; the diameter adjusting units are arranged in the pouring plates, a supporting column is vertically fixed to one side of the frame body, and a connecting plate is installed on the supporting column in a sliding mode; the circulating liquid feeding unit is mounted on the connecting plate, and a liquid inlet channel and a liquid discharging channel are formed in one side of the pouring plate; the device can be stacked and fixed according to needs, so that a concrete pouring cavity with a specific size is formed, each pouring plate is internally provided with a diameter adjusting unit, and the sizes of different positions of the concrete pouring cavity can be effectively changed, so that concrete test blocks with specific shapes are formed during subsequent pouring forming, and different bonding performance test experiments are met.

Description

Technical Field

[0001] The invention belongs to the technical field of concrete test block preparation, and in particular relates to a test block casting device and method for testing the bonding performance of reinforced concrete. Background Art

[0002] Reinforced concrete is a composite material widely used in modern buildings. It is composed of steel bars and concrete. It has excellent mechanical properties and can withstand large tension and pressure. With the rapid development of my country's construction industry, reinforced concrete structures are the main form of housing construction. Steel bars are tough materials and concrete is brittle. The bonding performance between steel bars and concrete directly affects the overall strength and durability of the structure. When testing the bonding performance between steel bars and concrete, it is usually necessary to make a test block containing one or more steel bars and bury them in concrete.

[0003] Traditional test block casting methods mainly include manual casting or simple mold forming, such as the invention patent with publication number CN109366698B, which can realize the integrated operation of casting and demoulding, and use the gravity of concrete itself to facilitate rapid demoulding. However, the casting surface size of the concrete test block is constant, and it is impossible to prepare a concrete test block of a specific size and shape; and during the casting process, it is impossible to vibrate the concrete, especially in areas with dense steel bars, which easily form bubbles or voids, which will reduce the contact area between the steel bars and the concrete, thereby affecting the accuracy of the bonding performance test results. Therefore, it is necessary to provide a test block casting device and method for testing the bonding performance of reinforced concrete to solve the problems raised in the above background technology. Summary of the invention

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a test block casting device for testing the bonding performance of reinforced concrete, comprising: a base plate, on which a frame body is vertically connected; a support column, which is arranged and fixed in the middle of the base plate, and a guard plate seat is installed on the upper end of the support column; a casting plate, which is a plurality of casting plates arranged in an arranged manner, and the plurality of casting plates are distributed along the axial direction of the support column and fixed above the guard plate seat; a casting pipe, which is vertically arranged in the middle of the upper end surface of the frame body, and a cover plate is sealed above the casting plate, and the lower end of the casting pipe is connected to the cover plate; a diameter adjustment unit is arranged in each of the casting plates; an outer sliding frame, which is slidably installed in the frame body, a pillar is vertically fixed on one side of the frame body, a connecting plate is slidably installed on the pillar, and the connecting plate is fixed to the outer sliding frame; a circulating liquid supply unit, which is installed on the connecting plate, and a liquid inlet channel and a liquid discharge channel are opened on one side of the casting plate, and the circulating liquid supply unit is sealed and connected with the liquid inlet channel and the liquid discharge channel.

[0005] Preferably, the sealing combination between the casting plates forms a concrete casting chamber, and an anti-seepage membrane is provided in the concrete casting chamber; and the cover plate is provided with a steel bar insertion hole.

[0006] Preferably, the diameter adjustment unit includes: an upper pressure plate, the center of which is arranged in the casting plate, and a lower pressure plate is installed on the casting plate below the upper pressure plate; positioning holes, which are circumferentially opened on the upper pressure plate and the lower pressure plate; and a plurality of inner adjustment plates distributed in a circle, each of which has an axle pin symmetrically fixed on one end thereof, and is rotatably connected to the positioning hole through the axle pin, and the cross-section of the inner adjustment plate is an arc-shaped structure.

[0007] Preferably, the end of each inner adjustment plate is slidably connected with the adjacent inner adjustment plate, and the upper and lower end surfaces of the inner adjustment plate are provided with sliding grooves, and the adjacent inner adjustment plates are slidably connected with the sliding grooves through guide shafts; a toothed plate is rotatably arranged in the casting plate, and a guide rod is eccentrically connected to the toothed plate, one end of the guide rod is connected to one of the inner adjustment plates, and a toothed plate is slidably arranged in the casting plate, and the toothed plate is meshed with the toothed plate for transmission, and a supporting cylinder is arranged on the side of the outer sliding frame away from the connecting plate, and the output end of the supporting cylinder is in contact with the toothed plate.

[0008] Preferably, a plurality of inner rods are distributed on the circumference below the upper pressure plate, each of the inner rods slides vertically through the casting plate, and the lower end of the inner rod is fixed to the lower pressure plate, and a spring is sleeved on the inner rod, and the upper end of the spring abuts against the casting plate; a toothed disk is fixed on the inner rod in the casting plate, and a top tooth ring is rotatably arranged in the casting plate, so that the top tooth ring is staggered or abutted against the tooth edges of the toothed disk.

[0009] Preferably, a circulation bin is provided in the casting plate, turbine blades are rotatably arranged in the circulation bin, and the liquid inlet channel and the liquid discharge channel are both connected to the circulation bin; a sealing ring is rotatably arranged above the circulation bin in the casting plate, a plurality of couplings are fixed in the sealing ring, the upper ends of the couplings are connected to the top gear ring, and the lower ends thereof are fixed to the turbine blades.

[0010] Preferably, a plurality of vibration guide rods are distributed on the inner circumference of the casting plate, each of the vibration guide rods is radially slidably arranged in the casting plate, a compression spring is sleeved on the vibration guide rod, and the compression spring causes the vibration guide rod to slide toward the side close to the center of the casting plate through the elastic force; an inclined block is fixed at one end of the vibration guide rod, and a shift ring is coaxially fixed on the top gear ring, and a plurality of convex edges are distributed on the outer wall of the shift ring, and the convex edges are in sliding cooperation contact with the inclined block.

[0011] Preferably, the circulating liquid supply unit includes: a fixed shaft, vertically fixed on the connecting plate, a fine-tuning plate being slidably mounted on the fixed shaft; a plurality of liquid guide seats arranged up and down and fixed on the fine-tuning plate, each of the liquid guide seats being in sealing contact with the corresponding casting plate, and a liquid supply pipe being connected to the outside of the liquid guide seats; an adjusting cylinder, vertically connected to the connecting plate, and an output end of the adjusting cylinder being connected to the fine-tuning plate.

[0012] Preferably, a test block casting method for testing the bonding performance of reinforced concrete comprises the following steps: S1. According to the pouring height, multiple groups of pouring plates are stacked and fixed along the axial direction of the support column, and a layered concrete pouring cavity is formed through the support of the guard plate seat. An anti-seepage membrane is laid inside to prevent leakage, and then a cover plate is sealed on the upper pouring plate; S2. Based on the precast shape, the outer sliding frame is controlled to slide vertically along the frame body, so that the top support cylinder on the outer sliding frame pushes and adjusts the tooth plate in each casting plate, thereby driving the tooth plate to rotate, and the inner adjustment plate slides and unfolds under the push of the guide rod to adjust the inner diameter of the casting cavity; S3, pouring concrete through the top pouring pipe, and the concrete gradually fills the pouring cavity; during the pouring process, the outer sliding frame is adjusted to move upward synchronously with the pouring height, wherein the circulating liquid delivery unit can be sealed and docked with each pouring plate, thereby driving the turbine blades in the pouring plate to rotate at high speed through hydraulic action, and during the rotation, the diameter adjustment unit is axially vibrated through the tooth bite of the top tooth ring and the tooth plate, and at the same time, the vibration guide rod can provide radial vibration to the inner adjustment plate as the dial ring rotates; S4. After the initial pouring is completed, the liquid supply pipe injects a constant temperature medium into the circulation chamber to accurately control the concrete hardening temperature through closed-loop flow; S5. After the curing is completed, demould the casting plates one by one.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The multiple casting plates used in the present invention can be stacked and fixed as needed to form a concrete casting cavity of a specific size, wherein each casting plate is provided with a diameter adjusting unit, which can effectively change the size of the concrete casting cavity at different positions, so that a concrete test block of a specific shape can be formed during subsequent casting and molding, so as to meet different bonding performance test experiments; wherein each casting plate is provided with a turbine blade, which can make the top tooth ring and the tooth blade of the tooth disk bite and stagger during continuous rotation, thereby realizing the overall axial vibration of the diameter adjusting unit, and the anti-seepage membrane can effectively prevent the concrete slurry from leaking out, wherein the circumferentially distributed vibration guide rods can simultaneously provide radial vibration to the concrete slurry in the casting plate, therefore, during the casting process, as the casting height increases, the circulating liquid delivery unit is connected to each casting plate, and high-pressure fluid is delivered to the circulation chamber in the casting plate to drive the turbine blades in the casting plate to rotate at different speeds, thereby realizing a gradual vibration effect during the casting process, and after the casting is completed, it can be vibrated in sections as needed to avoid the appearance of voids or bubbles in the test block, thereby affecting the subsequent test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a side view of the present invention; Figure 3 It is a structural schematic diagram of the casting plate in the present invention; Figure 4 A half-section view of the diameter adjustment unit in the present invention; Figure 5 It is a schematic diagram of the installation structure of the toothed disc and the toothed plate in the present invention; Figure 6 It is a schematic diagram of the installation structure of the top gear ring and the sharp gear disc in the present invention; Figure 7 It is a schematic diagram of the installation structure of the vibration guide rod in the present invention; Figure 8 It is a schematic diagram of the distribution structure of multiple vibration guide rods in the present invention; Fig. 9 for Figure 2 A schematic diagram of the structure enlargement in the middle; In the figure: 1. bottom plate; 11. frame body; 12. support column; 13. guard plate seat; 14. casting pipe; 15. cover plate; 16. outer sliding frame; 17. pillar; 18. connecting plate; 19. steel bar insertion hole; 2. casting plate; 21. liquid inlet channel; 22. liquid discharge channel; 23. sharp tooth plate; 24. top tooth ring; 25. circulation chamber; 26. turbine blade; 3. diameter adjustment unit; 31. upper pressure plate; 32. lower pressure plate; 33. positioning hole; 34. inner adjustment plate; 35. shaft pin; 36. slide groove; 37. tooth plate; 38. guide rod; 39. tooth plate; 4. circulating liquid delivery unit; 41. fixed shaft; 42. fine adjustment plate; 43. liquid guide seat; 44. adjusting cylinder; 5. inner rod; 51. sealing ring; 52. coupling; 6. vibration guide rod; 61. inclined block; 62. dial ring. DETAILED DESCRIPTION

[0015] See also Figure 1-Figure 9 In an embodiment of the present invention, a test block casting device for testing the bonding performance of reinforced concrete comprises: A bottom plate 1, with a frame body 11 vertically connected to the top thereof; A support column 12 is arranged and fixed in the middle of the base plate 1, and a guard plate seat 13 is installed on the upper end of the support column 12; The casting plates 2 are arranged in a plurality, and the plurality of casting plates 2 are distributed along the axial direction of the support column 12 and fixed above the guard plate seat 13; wherein a plurality of guide bars can be vertically arranged in the frame body 11, and each casting plate 2 can be limitedly slidably installed on the guide bars to prevent the casting plate 2 from tilting during casting; A pouring pipe 14 is vertically arranged in the middle of the upper end surface of the frame body 11. A cover plate 15 is sealed above the pouring plate 2. The lower end of the pouring pipe 14 is connected to the cover plate 15. A diameter adjustment unit 3 is provided in each of the casting plates 2 and is used to adjust the effective casting area in the casting plate 2, thereby changing the size and shape of the subsequent casting; An outer sliding frame 16 is slidably mounted in the frame body 11. A support 17 is vertically fixed to one side of the frame body 11. A connecting plate 18 is slidably mounted on the support 17. The connecting plate 18 is fixed to the outer sliding frame 16. The circulating liquid supply unit 4 is installed on the connecting plate 18, and a liquid inlet channel 21 and a liquid discharge channel 22 are opened on one side of the casting plate 2. The circulating liquid supply unit 4 is sealed and connected to the liquid inlet channel 21 and the liquid discharge channel 22, wherein the high-pressure fluid in the circulating liquid supply unit 4 can enter the casting plate 2 through the liquid inlet channel 21, and then flow out from the liquid discharge channel 22.

[0016] In this embodiment, the sealing combination between the casting plates 2 constitutes a concrete casting chamber, and an anti-seepage membrane is provided in the concrete casting chamber. The anti-seepage membrane can isolate the concrete from the casting plates 2 to avoid adhesion between the concrete and the casting plates 2, and at the same time avoid leakage of concrete during the casting process; the cover plate 15 is provided with a steel bar insertion hole 19 to facilitate the pre-insertion of multiple steel bars.

[0017] As a preferred embodiment, the diameter adjustment unit 3 includes: An upper platen 31 is centrally disposed in the casting plate 2, and a lower platen 32 is mounted on the casting plate 2 below the upper platen 31; Positioning holes 33 are circumferentially formed on the upper pressing plate 31 and the lower pressing plate 32; There are multiple inner adjustment plates 34 distributed in a circle, and one end of each inner adjustment plate 34 is symmetrically fixed with an axle pin 35, and is rotatably connected to the positioning hole 33 through the axle pin 35. The cross-section of the inner adjustment plate 34 is an arc-shaped structure. Multiple inner adjustment plates 34 can be combined with each other to form a structural frame with a hollow structure in the middle. At this time, concrete can be cast in the middle of the structural frame. When the inner adjustment plates 34 are rotated and adjusted synchronously, the center of the structural frame gradually increases or decreases, thereby changing the size of the casting area.

[0018] In this embodiment, the end of each inner adjustment plate 34 is slidably connected with the adjacent inner adjustment plate 34, and the upper and lower end surfaces of the inner adjustment plate 34 are provided with a slide groove 36, and the adjacent inner adjustment plates 34 are slidably connected with the slide groove 36 through a guide shaft; A toothed disc 37 is rotatably provided in the casting plate 2, and a guide rod 38 is eccentrically connected to the toothed disc 37. One end of the guide rod 38 is connected to one of the inner adjustment plates 34. A toothed plate 39 is slidably provided in the casting plate 2. The toothed plate 39 is meshed with the toothed disc 37 for transmission. A supporting cylinder (not shown in the figure) is provided on the side of the outer sliding frame 16 away from the connecting plate 18. The output end of the supporting cylinder is in contact with the toothed plate 39. Before the concrete is poured, each casting plate 2 is provided with a toothed plate 39 in the casting plate 2. Each inner adjustment plate 34 is in the initial position, at which time the casting area is at its maximum size, and the outer sliding frame 16 pushes the tooth plate 39 to slide accordingly through the supporting cylinder during the up and down sliding adjustment, so that the toothed plate 37 pushes the guide rod 38 to press the inner adjustment plate 34 to one side under the action of gear meshing, thereby changing the installation angle of each inner adjustment plate 34 and effectively adjusting the casting area to a suitable size; and after the casting is completed, the supporting cylinder can push each tooth plate 39 in the reverse direction so that the inner adjustment plate 34 can be rotated and reset to facilitate the demoulding of the concrete test block.

[0019] In this embodiment, a plurality of inner rods 5 are distributed on the circumference below the upper platen 31, each of the inner rods 5 vertically slides through the casting plate 2, and the lower end of the inner rod 5 is fixed to the lower platen 32, and a spring is sleeved on the inner rod 5, and the upper end of the spring abuts against the casting plate 2; A sharp toothed disk 23 is fixed on the inner rod 5 in the casting plate 2, and a top toothed ring 24 is rotatably arranged in the casting plate 2, so that the top toothed ring 24 and the toothed disk 23 are staggered or abutted against each other. In this way, when the top toothed ring 24 rotates continuously at different speeds, it can drive the inner rod 5 to slide up and down reciprocatingly through the bite action with the sharp toothed disk 23. At this time, the concrete in the structural frame constructed by the inner adjustment plate 34 can flow fully, and the air bubble film in the concrete is broken and discharged, which accelerates the migration and discharge process of the bubbles. To ensure the quality of casting, the pitch of the top tooth ring 24 and the sharp tooth plate 23 is designed to be 2mm, the amplitude is 0.5mm-1.0mm, and the frequency is 20Hz-50Hz to achieve axial high-frequency micro-vibration. It should be noted that the upper pressure plate 31 and the lower pressure plate 32 in the adjacent casting plates 2 are provided with annular convex edges and grooves, which can ensure that the casting plates 2 are always sliding and sealed to prevent concrete overflow, and part of the concrete may remain in the matching gap between the upper pressure plate 31 and the lower pressure plate 32, which can be externally polished and trimmed (i.e., residual material removal) during subsequent demolding.

[0020] In this embodiment, a circulation chamber 25 is provided in the casting plate 2, a turbine blade 26 is rotatably provided in the circulation chamber 25, and the liquid inlet channel 21 and the liquid discharge channel 22 are both connected to the circulation chamber 25; A sealing ring 51 is rotatably provided above the circulation chamber 25 in the casting plate 2, and a plurality of couplings 52 are fixed in the sealing ring 51. The upper ends of the couplings 52 are connected to the top gear ring 24, and the lower ends thereof are fixed to the turbine blades 26. Thus, when high-pressure fluid enters the circulation chamber 25 through the liquid inlet channel 21, it can push the turbine blades 26 to rotate at a high speed, thereby providing a rotational driving force for the top gear ring 24.

[0021] As a preferred embodiment, a plurality of vibration guide rods 6 are distributed on the inner circumference of the casting plate 2, each of the vibration guide rods 6 is radially slidably arranged in the casting plate 2, and a compression spring is sleeved on the vibration guide rod 6, and the compression spring causes the vibration guide rod 6 to slide toward the side close to the center of the casting plate 2 through the elastic force; An inclined block 61 is fixed to one end of the vibration guide rod 6, and a shift ring 62 is coaxially fixed to the top gear ring 24. A plurality of convex edges are distributed on the outer wall of the shift ring 62, and the convex edges are in sliding cooperation contact with the inclined block 61. That is, when the shift ring 62 rotates synchronously with the top gear ring 24, it can push the vibration guide rod 6 to slide to the side away from the center of the casting plate 2 through the convex edges. At this time, the compression spring is gradually compressed. When the convex edge slides away from the inclined block 61, the vibration guide rod 6 realizes axial vibration of the inner adjustment plate 34 under the action of elastic force, so that the concrete in the casting plate 2 can flow fully.

[0022] In this embodiment, the circulating liquid feeding unit 4 includes: A fixed shaft 41 is vertically fixed on the connecting plate 18, and a fine-tuning plate 42 is slidably mounted on the fixed shaft 41; The liquid guide seats 43 are arranged in a vertical arrangement and fixed on the fine-tuning plate 42. Each of the liquid guide seats 43 is in sealing contact with the corresponding casting plate 2, and each of the liquid guide seats 43 is connected to a liquid supply pipe. Such an arrangement enables high-pressure fluid to be transported to adjacent casting plates 2 through multiple liquid guide seats 43, so that each casting plate 2 can simultaneously provide a vibration effect to the concrete inside it, so that the concrete can flow fully as a whole. After the casting is completed, the liquid supply pipe can inject a constant temperature medium into the circulation chamber 25 at a low pressure, and the concrete hardening temperature can be accurately controlled through a closed-loop flow. The adjusting cylinder 44 is vertically connected to the connecting plate 18. The output end of the adjusting cylinder 44 is connected to the fine-tuning plate 42, and the fine-tuning plate 42 can be vertically slidably adjusted. On the one hand, it ensures that the liquid guide seat 43 is sealed and connected with the casting plate 2. On the other hand, the liquid guide seat 43 can be quickly switched to be sealed and connected with different casting plates 2, thereby improving the flexibility of the vibration operation during casting.

[0023] In this embodiment, a test block casting method for testing the bonding performance of reinforced concrete comprises the following steps: S1. According to the pouring height, multiple groups of pouring plates 2 are stacked and fixed along the axial direction of the support column 12. Each layer of pouring plates 2 can be connected by quick-release bolts. Rubber sealing rings are set between layers to ensure that the vertical error of the cavity is ≤1mm / m. The layered concrete pouring cavity is supported by the guard plate seat 13. An impermeable membrane is laid inside to prevent leakage. The impermeable membrane adopts a polymer membrane (such as HDPE or PTFE) with a thickness of ≥0.5mm, which has the characteristics of corrosion resistance and high tensile strength. The joints are sealed by hot-melt welding process, and then the cover plate 15 is sealed on the upper pouring plate 2; S2. Based on the precast shape, the outer sliding frame 16 is controlled to slide vertically along the frame body 11, so that the top support cylinder on the outer sliding frame 16 pushes and adjusts the tooth plate 39 in each casting plate 2, thereby driving the tooth plate 37 to rotate, and the inner adjustment plate 34 is pushed by the guide rod 38 to slide and expand, thereby adjusting the inner diameter of the casting cavity; S3, pouring concrete through the top pouring pipe 14, the concrete gradually fills the pouring cavity, and the pouring speed is 0.5m³ / h-1.0m³ / h; during the pouring process, the outer sliding frame 16 is adjusted to move upward synchronously with the pouring height, wherein the circulating liquid delivery unit 4 can be sealed and docked with each pouring plate 2, thereby driving the turbine blades 26 in the pouring plate 2 to rotate at high speed through the hydraulic action, and during the rotation, the diameter adjustment unit 3 is axially vibrated through the tooth edge bite action of the top tooth ring 24 and the toothed disc 23, and at the same time, the vibration guide rod 6 can provide radial vibration to the inner adjustment plate 34 during the rotation of the dial ring 62, and its axial vibration frequency is 20Hz-50Hz, and the radial vibration frequency is 15Hz-30Hz; S4. After the initial pouring is completed, the liquid supply pipe injects a constant temperature medium into the circulation chamber 25 to accurately control the concrete hardening temperature through closed-loop flow; S5. After the curing is completed, demould the casting plates 2 one by one, and the time is 24h-48h (constant temperature 20℃±2℃).

[0024] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A test block casting device for testing the bonding performance of reinforced concrete, characterized in that: It includes: A bottom plate (1), with a frame body (11) vertically connected to the top of the bottom plate; A support column (12) is arranged and fixed in the middle of the base plate (1), and a guard plate seat (13) is installed at the upper end of the support column (12); A plurality of casting plates (2) are arranged in an array, and the plurality of casting plates (2) are distributed along the axial direction of the support column (12) and fixed above the guard plate seat (13); A pouring pipe (14) is vertically arranged in the middle of the upper end surface of the frame body (11); a cover plate (15) is sealed above the pouring plate (2); and the lower end of the pouring pipe (14) is connected to the cover plate (15); A diameter adjustment unit (3) is arranged in each of the casting plates (2); An outer sliding frame (16) is slidably mounted in the frame body (11); a support column (17) is vertically fixed to one side of the frame body (11); a connecting plate (18) is slidably mounted on the support column (17); and the connecting plate (18) is fixed to the outer sliding frame (16); A circulating liquid supply unit (4) is installed on the connecting plate (18); a liquid inlet channel (21) and a liquid discharge channel (22) are provided on one side of the casting plate (2); and the circulating liquid supply unit (4) is sealed and butted against the liquid inlet channel (21) and the liquid discharge channel (22).

2. A test block casting device for testing the bonding performance of reinforced concrete according to claim 1, characterized in that: The casting plates (2) are sealed and combined to form a concrete casting chamber, and an anti-seepage membrane is provided in the concrete casting chamber; the cover plate (15) is provided with a steel bar insertion hole (19).

3. A test block casting device for testing the bonding performance of reinforced concrete according to claim 1, characterized in that: The diameter adjustment unit (3) comprises: An upper pressing plate (31) whose center is arranged inside the casting plate (2), and a lower pressing plate (32) is installed on the casting plate (2) below the upper pressing plate (31); Positioning holes (33) are circumferentially formed on the upper pressure plate (31) and the lower pressure plate (32); The inner adjustment plates (34) are multiple and distributed around a circle. An axle pin (35) is fixed symmetrically at one end of each inner adjustment plate (34) and is rotatably connected to the positioning hole (33) via the axle pin (35). The cross section of the inner adjustment plate (34) is an arc-shaped structure.

4. A test block casting device for testing the bonding performance of reinforced concrete according to claim 3, characterized in that: The end of each inner adjustment plate (34) is slidably sleeved with an adjacent inner adjustment plate (34), and upper and lower end surfaces of the inner adjustment plate (34) are provided with a slide groove (36), and the adjacent inner adjustment plates (34) are slidably connected to the slide groove (36) via a guide shaft; A toothed disc (37) is rotatably arranged inside the casting plate (2), a guide rod (38) is eccentrically connected to the toothed disc (37), one end of the guide rod (38) is connected to one of the inner adjustment plates (34), a toothed plate (39) is slidably arranged inside the casting plate (2), the toothed plate (39) is meshed with the toothed disc (37) for transmission, and a supporting cylinder is arranged on a side of the outer sliding frame (16) away from the connecting plate (18), the output end of the supporting cylinder is in abutment with the toothed plate (39).

5. A test block casting device for testing the bonding performance of reinforced concrete according to claim 4, characterized in that: A plurality of inner rods (5) are distributed on the circumference below the upper pressure plate (31), each of the inner rods (5) vertically slides through the casting plate (2), and the lower end of the inner rod (5) is fixed to the lower pressure plate (32), and a spring is sleeved on the inner rod (5), and the upper end of the spring abuts against the casting plate (2); A toothed disc (23) is fixed on the inner rod (5) in the casting plate (2), and a top toothed ring (24) is rotatably arranged in the casting plate (2), so that the top toothed ring (24) and the toothed disc (23) are staggered or in contact with each other.

6. A test block casting device for testing the bonding performance of reinforced concrete according to claim 5, characterized in that: A circulation chamber (25) is provided in the casting plate (2), turbine blades (26) are rotatably arranged in the circulation chamber (25), and the liquid inlet channel (21) and the liquid discharge channel (22) are both connected to the circulation chamber (25); A sealing ring (51) is rotatably arranged above the circulating chamber (25) in the casting plate (2), and a plurality of coupling shafts (52) are fixed in the sealing ring (51). The upper ends of the coupling shafts (52) are connected to the top gear ring (24), and the lower ends of the coupling shafts (52) are fixed to the turbine blades (26).

7. A test block casting device for testing the bonding performance of reinforced concrete according to claim 6, characterized in that: A plurality of vibration guide rods (6) are distributed on the inner circumference of the casting plate (2), each of the vibration guide rods (6) being radially slidably arranged in the casting plate (2), and a compression spring is sleeved on the vibration guide rod (6), and the compression spring causes the vibration guide rod (6) to slide toward a side close to the center of the casting plate (2) through the action of elastic force; An inclined block (61) is fixed to one end of the vibration guide rod (6), and a shifting ring (62) is coaxially fixed to the top gear ring (24), and a plurality of convex edges are distributed on the outer wall of the shifting ring (62), and the convex edges are in sliding contact with the inclined block (61).

8. A test block casting device for testing the bonding performance of reinforced concrete according to claim 1, characterized in that: The circulating liquid feeding unit (4) comprises: A fixed shaft (41) is vertically fixed on the connecting plate (18), and a fine-tuning plate (42) is slidably mounted on the fixed shaft (41); A plurality of liquid guide seats (43) are arranged vertically and fixed on the fine-tuning plate (42), each of the liquid guide seats (43) being in sealing contact with the corresponding casting plate (2), and each of the liquid guide seats (43) is connected to a liquid supply pipe; The regulating cylinder (44) is vertically connected to the connecting plate (18), and the output end of the regulating cylinder (44) is connected to the fine-tuning plate (42).

9. A method for casting a test block for testing the bonding performance of reinforced concrete, which adopts the test block casting device for testing the bonding performance of reinforced concrete as claimed in claim 7, characterized in that: It includes the following steps: S1, stacking and fixing a plurality of casting plates (2) axially along the support column (12) according to the casting height, supporting the formation of a layered concrete casting cavity through a guard plate seat (13), laying an anti-seepage membrane inside to prevent leakage, and then sealing the upper casting plate (2) with a cover plate (15); S2. Based on the precast shape, the outer sliding frame (16) is controlled to slide vertically along the frame body (11), so that the top support cylinder on the outer sliding frame (16) pushes and adjusts the tooth plate (39) in each casting plate (2), thereby driving the tooth plate (37) to rotate, and the inner adjustment plate (34) is pushed and unfolded under the push of the guide rod (38), thereby adjusting the inner diameter size of the casting cavity; S3, pouring concrete through the top pouring pipe (14), and the concrete gradually fills the pouring cavity; during the pouring process, the outer sliding frame (16) is adjusted to move upward synchronously with the pouring height, wherein the circulating liquid delivery unit (4) can be sealed and docked with each pouring plate (2), thereby driving the turbine blades (26) in the pouring plate (2) to rotate at high speed through hydraulic action, and during the rotation, the diameter adjustment unit (3) is axially vibrated through the tooth bite action of the top tooth ring (24) and the tooth plate (23), and at the same time, the vibration guide rod (6) can provide radial vibration to the inner adjustment plate (34) during the rotation of the dial ring (62); S4. After the initial pouring is completed, the liquid supply pipe injects a constant temperature medium into the circulation chamber (25) to accurately control the concrete hardening temperature through closed-loop flow; S5. After the curing is completed, the casting plates (2) are demoulded one by one.

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