Concrete test block making and inserting device

Abstract

The utility model relates to the technical field of concrete production discloses a concrete test block making inserts and pats device, including setting on the test mould support platform and inserts and pats mechanism of frame, the test mould support platform includes support base, and a plurality of first stage jacking air cylinders are fixed on support base, and the piston rod of a plurality of first stage jacking air cylinders is fixed with intermediate bolster, and a plurality of second stage jacking air cylinders are fixed on intermediate bolster, and the piston rod of a plurality of second stage jacking air cylinders is fixed with test mould bolster;The inserts and pats mechanism includes the movable frame of translatable, and a plurality of third air cylinders are fixed on movable frame, and the piston rod of a plurality of third air cylinders is fixed with lifting plate, and a plurality of vertically arranged rammer are connected on lifting plate. Through the automation of inserts and pats work in the test block preparation process, solve the problem that the existing technology in manual inserts and pats concrete test block exists and the labour intensity is big, and the efficiency is low, and inserts and pats quality is unstable and the consistency is poor etc.

Description

Technical Field

[0001] This utility model relates to the field of concrete production technology, and in particular to a tamping device for making concrete test blocks. Background Technology

[0002] Concrete test blocks are crucial for evaluating concrete strength and verifying its quality; their fabrication quality directly impacts the accuracy of test results. According to relevant standards and specifications, concrete test blocks require two stages of concrete pouring into the mold. After each pour, the concrete must be compacted using a tamping rod in a prescribed manner—typically requiring uniform tamping in a spiral direction, with each tamping session consisting of at least 27 strokes (for a 150mm standard mold). The tamping process must ensure uniformity in force, frequency, and distribution. Currently, the tamping of concrete test blocks is largely done manually, which presents the following problems: 1. High labor intensity: A single production requires the completion of multiple sets of test blocks (3 blocks per set), with numerous tamping and repeated operations, which can easily lead to worker fatigue over long periods of time; 2. Unstable tamping quality: The force, depth, frequency and distribution of manual tamping are difficult to control precisely, which can easily lead to local missed tamping, over-tamping or uneven tamping, resulting in differences in the internal density of the test block and affecting the reliability of subsequent strength testing. 3. Low efficiency: Manual operation requires tamping each mold one by one, and the interval between two pours and tamping must be strictly controlled, which is difficult to meet the needs of batch production of test blocks; 4. Poor consistency: Different operators have different insertion and tamping habits, and the stability of the same operator's operation varies at different times, resulting in large fluctuations in the production quality of the same batch of test blocks.

[0003] Therefore, there is an urgent need for an automated tamping device to overcome the drawbacks of manual operation and improve the efficiency and quality stability of concrete test block production. Utility Model Content

[0004] The purpose of this invention is to provide a concrete test block preparation and tamping device. By automating the tamping process during test block preparation, it solves the problems of high labor intensity, low efficiency, unstable tamping quality, and poor consistency in the existing technology of manual tamping of concrete test blocks, ensuring the uniformity and stability of tamping quality, and improving production efficiency.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: A concrete test block preparation and tamping device includes a test mold lifting platform and a tamping mechanism mounted on a frame. The test mold lifting platform includes a support base, a plurality of primary lifting cylinders are fixed on the support base, an intermediate support plate is fixed on the piston rod of the plurality of primary lifting cylinders, a plurality of secondary lifting cylinders are fixed on the intermediate support plate, and a test mold support plate is fixed on the piston rod of the plurality of secondary lifting cylinders. The tamping mechanism includes a movable frame with multiple third cylinders fixed on it. Lifting plates are fixed to the piston rods of the third cylinders, and multiple vertically arranged tamping rods are connected to the lifting plates. The central axes of the tamping rods are located on the same vertical plane and are perpendicular to the mold support plate. The primary lifting cylinder, secondary lifting cylinder, and third cylinders are all connected to a high-pressure air source via air pipes and solenoid valves. The solenoid valves are electrically connected to a controller, which controls the operation of each cylinder through the solenoid valves.

[0006] When making concrete test blocks, several test molds are first placed side by side on the test mold support plate, with the molds close together and aligned. Then, about half of the concrete is poured into the test mold. The controller controls the first-stage and second-stage lifting cylinders. The first-stage lifting cylinder lifts the middle support plate upwards a certain distance, and the second-stage lifting cylinder lifts the test mold support plate upwards a certain distance, raising the test mold to a certain height. Then, the controller controls the third cylinder, which can move the lifting plate up or down. The lifting plate moves the tamping rod up or down. When the tamping rod moves down, the lower part of the tamping rod inserts into the concrete in the test mold. When the tamping rod moves up, it detaches from the concrete in the test mold. By moving the frame horizontally, the tamping rod can be moved horizontally, thus performing tamping work at different positions in the test mold. After the concrete in the mold is tamped, the controller retracts the piston rods of the primary and secondary lifting cylinders, lowering the mold support plate to its original position. The remaining concrete is then poured into the mold. The controller then raises the intermediate support plate using the primary lifting cylinder, while the secondary lifting cylinder remains inactive. The mold is then raised to the height for the second tamping operation under the lifting action of the intermediate support plate. The tamping rod continues to move horizontally and vertically to perform the second tamping of the concrete in the mold. After the second tamping is completed, the controller retracts the piston rod of the primary lifting cylinder, lowering the mold to its original position. The mold is then removed and placed on the appropriate platform for curing.

[0007] Preferably, the lifting plate is formed with a guide hole that fits the clearance of the tamping rod, and the tamping rod is inserted into the guide hole; the guiding effect of the guide hole allows the tamping rod to be inserted into the concrete in a vertical state, which can improve and ensure the tamping effect; also, after the tamping rod contacts the bottom surface of the test mold during one tamping, the tamping rod can move upward without rigid contact.

[0008] The tamping rod is fixed to a connecting block at its upper protruding end through the lifting plate. The connecting block and the lifting plate are connected by a spring. When the tamping rod is pushed upward, the spring generates a pulling force, which allows the tamping rod to move downward and reset after contacting the restraint.

[0009] Preferably, the lower end of the tamping rod is formed with a spherical head. The spherical head can avoid wear on the bottom and side walls of the test mold during the tamping process. At the same time, when the spherical head is inserted into the concrete, the "displacement force" on the surrounding material is more dispersed, which can drive the surrounding concrete to flow evenly in all directions, avoiding honeycomb and voids caused by localized force concentration. When pulled out, the "hole" formed by the spherical head is more easily filled by the surrounding concrete, reducing local loosening caused by the pulling action.

[0010] Preferably, the movable frame is fixed to the slider of a horizontally arranged first linear module, the first linear module is fixed to the slider of a vertically arranged second linear module, and the second linear module is fixed to the frame; both the first and second linear modules are electrically connected to the controller. The controller controls the operation of the second linear module, and the slider of the second linear module can drive the first linear module to move forward or backward. The controller also controls the operation of the first linear module, and the slider of the first linear module can drive the movable frame to move left or right. Through the cooperation of the first and second linear modules, the movable frame can move arbitrarily on the plane, thereby completing the tamping work of the tamping rod at different positions inside the mold.

[0011] Preferably, each of the four outer edges of the test mold tray is fixed with multiple limiting blocks. The limiting blocks can limit the position of the test mold placed on the test mold tray, making it easier for the test molds to be more neatly arranged.

[0012] Preferably, the inner end of the limiting block is formed with a chamfer, which can guide the placement of the test mold and facilitate the placement of the test mold on the test mold tray.

[0013] Preferably, there are two trial mold support platforms, which are arranged one in front of the other and slidably connected to the translation drive mechanism.

[0014] Preferably, the translation drive mechanism includes a longitudinally arranged screw and a guide rail. Two nuts, arranged front and rear, are screwed onto the screw, and the two nuts are respectively fixed to the support bases of the two mold lifting platforms. The support bases are slidably connected to the guide rail. Both ends of the screw are rotatably connected to the frame, and one end is connected to a third motor that drives its rotation. The third motor is electrically connected to the controller. The third motor drives the screw to rotate, and the screw, through the nuts, drives the two support bases to move simultaneously, thereby causing the two mold lifting platforms to move synchronously. Each of the two mold lifting platforms can hold one set of molds. While one set of molds is being tamped, concrete can be loaded onto the other set of molds, thus improving tamping efficiency.

[0015] The outstanding effect of this utility model is: Compared with existing technologies, the controller coordinates the operation of cylinders, linear modules and motors to achieve full automation of the process, including mold lifting, tamping rod lifting and translation, and tamping number control, without the need for manual intervention, thus significantly reducing labor intensity.

[0016] The frequency and distribution of tamping rod insertion can be precisely controlled by the program to ensure the consistency of tamping of test blocks in the same batch, avoid the density difference caused by manual operation, and improve the reliability of test block test data.

[0017] The system adopts an alternating working mode with dual mold support platforms, allowing the tamping and loading processes to proceed in parallel. Multiple molds can be tamped simultaneously at a time, significantly reducing the production time for batch test blocks. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A sectional view of AA; Figure 3 for Figure 1 A magnified view of a portion of B; Figure 4 for Figure 2 A magnified view of a portion of C.

[0019] Reference numerals: 1. Frame; 2. Trial mold lifting platform; 21. Support base; 22. First-stage lifting cylinder; 23. Intermediate support plate; 24. Second-stage lifting cylinder; 25. Trial mold support plate; 26. Limiting block; 3. Tamping mechanism; 31. Moving frame; 32. Third cylinder; 33. Lifting plate; 34. Tamping rod; 341. Ball head; 35. Connecting block; 36. Spring; 37. First linear module; 38. Second linear module; 4. Translation drive mechanism; 41. Screw; 42. Guide rail; 43. Nut; 90. Trial mold. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] The following is for reference Figures 1 to 4 The present invention will be described as follows: A tamping device for preparing concrete test blocks, such as Figure 1As shown, the system includes a mold lifting platform 2 and a tamping mechanism 3 mounted on a frame 1. The mold lifting platform 2 includes a support base 21, on which multiple primary lifting cylinders 22 are fixed. An intermediate support plate 23 is fixed to the piston rod of each primary lifting cylinder 22, and multiple secondary lifting cylinders 24 are fixed to the intermediate support plate 23. A mold support plate 25 is fixed to the piston rod of each secondary lifting cylinder 24. Multiple limiting blocks 26 are fixed to the four outer edges of the mold support plate 25. These limiting blocks 26 position the molds 90 placed on the mold support plate 25, ensuring neat alignment. The inner ends of the limiting blocks 26 have chamfered portions, which guide the placement of the molds 90 onto the mold support plate 25.

[0022] The tamping mechanism 3 includes a movable frame 31, on which multiple third cylinders 32 are fixed. A lifting plate 33 is fixed to the piston rod of each of the third cylinders 32. Multiple vertically arranged tamping rods 34 are connected to the lifting plate 33. The central axes of the multiple tamping rods 34 are located on the same vertical plane and are perpendicular to the mold support plate 25. The primary lifting cylinder 22, the secondary lifting cylinder 24, and the third cylinders 32 are all connected to a high-pressure air source via air pipes and solenoid valves. The solenoid valves are electrically connected to a controller, which controls the operation of each cylinder through the solenoid valves.

[0023] The lifting plate 33 has a guide hole formed on it that fits with the tamping rod 34 with a clearance. The tamping rod 34 is inserted into the guide hole. The guide hole guides the tamping rod 34 so that it can be inserted into the concrete in a vertical position, which can improve and ensure the tamping effect. Also, after the tamping rod 34 contacts the bottom surface of the test mold 90 during one tamping, the tamping rod 34 can move upward without rigid contact.

[0024] The movable frame 31 is fixed to the slider of the horizontally arranged first linear module 37, the first linear module 37 is fixed to the slider of the vertically arranged second linear module 38, and the second linear module 38 is fixed to the frame 1. Both the first linear module 37 and the second linear module 38 are electrically connected to the controller. The controller controls the operation of the second linear module 38, and the slider of the second linear module 38 can drive the first linear module 37 to move forward or backward. The controller controls the operation of the first linear module 37, and the slider of the first linear module 37 can drive the movable frame 31 to move left or right. Through the cooperation of the first linear module 37 and the second linear module 38, the movable frame 31 can move arbitrarily on the plane, thereby completing the tamping work of the tamping rod 34 at different positions inside the mold 90.

[0025] like Figure 1 , Figure 2 The trial mold support platform 2 has two units, which are arranged one in front of the other and slidably connected to the translation drive mechanism 4.

[0026] The translation drive mechanism 4 includes a longitudinally arranged screw 41 and a guide rail 42. Two nuts 43, arranged front and rear, are screwed onto the screw 41. The two nuts 43 are respectively fixed to the support bases 21 of the two mold support platforms 2. The support bases 21 are slidably connected to the guide rail 42. Both ends of the screw 41 are rotatably connected to the frame 1, and one end is connected to a third motor that drives its rotation. The third motor is electrically connected to the controller. The third motor drives the screw 41 to rotate, and the screw 41, through the nuts 43, drives the two support bases 21 to move simultaneously, thereby causing the two mold support platforms 2 to move synchronously. Each of the two mold support platforms 2 can hold a set of molds 90. While one set of molds 90 is being tamped, concrete can be loaded onto the other set of molds 90, thus improving tamping efficiency.

[0027] like Figure 3 As shown, the tamping rod 34 is fixed with a connecting block 35 at the upper protruding end of the lifting plate 33. The connecting block 35 and the lifting plate 33 are connected by a spring 36. When the tamping rod 34 is pushed upward, the spring 36 generates a pulling force, which allows the tamping rod 34 to move downward and reset after contacting the restraint.

[0028] The lower end of the tamping rod 34 is formed with a ball head 341. The ball head 341 can avoid wear on the bottom and side walls of the test mold 90 by the tamping rod 34 during the tamping process. At the same time, when the ball head 341 is inserted into the concrete, the "displacement force" on the surrounding materials is more dispersed, which can drive the surrounding concrete to flow evenly in all directions, avoiding honeycomb and voids caused by local force concentration. When pulled out, the "hole" formed by the ball head is more easily filled by the surrounding concrete, reducing local loosening caused by the pulling action.

[0029] Working principle: The controller (such as a PLC controller) pre-sets the insertion parameters (number of times, translation path, etc.): When concrete test blocks need to be made, several test molds 90 are first placed side by side on the test mold support plate 25, with the test molds 90 close to each other and aligned. Then, about half of the concrete is poured into the test mold 90. The controller controls the first-stage lifting cylinder 22 and the second-stage lifting cylinder 24 to work. The first-stage lifting cylinder 22 lifts the middle support plate 23 upwards a certain distance, and the second-stage lifting cylinder 24 lifts the test mold support plate 25 upwards a certain distance. The test mold support plate 25 raises the test mold 90 to a certain height. Then the controller controls the third cylinder. 32. During operation, the third cylinder 32 can drive the lifting plate 33 to move up or down, which in turn drives the tamping rod 34 to move up or down. When the tamping rod 34 moves down, its lower part is inserted into the concrete inside the mold 90. When the tamping rod 34 moves up, it detaches from the concrete inside the mold 90. The first linear module 37 and the second linear module 38 can drive the moving frame to move horizontally. The horizontal movement of the moving frame 31 can cause the tamping rod 34 to move horizontally, thereby performing tamping work at different positions inside the mold 90. The tamping position sequence is as follows: Figure 4 The arrows indicate the direction of the concrete compaction. After the concrete compaction in the mold 90 is completed, the controller retracts the piston rods of the primary lifting cylinder 22 and the secondary lifting cylinder 24, causing the mold support plate 25 to move down and reset. Then, the remaining concrete is poured into the mold 90. The controller then controls the primary lifting cylinder 22 to raise the intermediate support plate 23, while the secondary lifting cylinder 24 remains inactive. At this point, the mold 90 is raised to the height for the second compaction under the lifting action of the intermediate support plate 23. The tamping rod 34 then continues to move horizontally and vertically to perform the second compaction of the concrete in the mold 90. While the compaction work is being performed on one mold support plate 25, the worker can add concrete to the mold 90 on the other mold support plate 25. After the second tamping is completed, the controller controls the piston rod of the first-stage lifting cylinder 22 to retract, the test mold 90 moves down and resets, and then the motor drives the screw 41 to rotate. The screw 41 drives another set of test molds 90 to move under the tamping rod through the nut 43 to carry out the tamping work. Then the test molds 90 that have been tamped are taken out and placed on the corresponding platform for curing.

[0030] Another tamping process: the first set of test molds 90 undergoes the first tamping, while the second set of test molds 90 undergoes the first concrete filling. After the first set of test molds 90 is tamped for the first time, both sets of test molds 90 are moved backward at the same time, and then the second set of test molds 90 is tamped for the first time, while the first set of test molds 90 is filled with concrete for the second time. After the first tamping of the second set of test molds 90 is completed, both sets of test molds 90 are moved forward and reset simultaneously. Then, the second tamping of the first set of test molds 90 is carried out, and the second loading of the second set of test molds 90 is carried out at the same time. After the first set of test molds 90 is tamped twice, the two sets of test molds 90 are moved backward synchronously, and then the second set of test molds 90 is tamped twice. The first set of test molds 90 is then removed. After the second insertion and tamping of the second set of test molds 90 is completed, the second set of test molds 90 are moved forward and removed.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. A concrete test block preparation and tamping device, comprising a test mold support platform (2) and a tamping mechanism (3) mounted on a frame (1), characterized in that: The test mold support platform (2) includes a support base (21), a plurality of primary lifting cylinders (22) are fixed on the support base (21), an intermediate support plate (23) is fixed on the piston rod of the plurality of primary lifting cylinders (22), a plurality of secondary lifting cylinders (24) are fixed on the intermediate support plate (23), and a test mold support plate (25) is fixed on the piston rod of the plurality of secondary lifting cylinders (24). The tamping mechanism (3) includes a movable frame (31) that can be moved horizontally. Multiple third cylinders (32) are fixed on the movable frame (31). A lifting plate (33) is fixed on the piston rod of the multiple third cylinders (32). Multiple vertically arranged tamping rods (34) are connected to the lifting plate (33). The central axis of the multiple tamping rods (34) is located on the same vertical plane and is perpendicular to the test mold support plate (25).

2. The concrete test block preparation tamping device according to claim 1, characterized in that: The lifting plate (33) is formed with a guide hole that fits with the tamping rod (34) with a clearance, and the tamping rod (34) is inserted into the guide hole; The tamping rod (34) is fixed to the upper protruding end of the lifting plate (33) with a connecting block (35), and the connecting block (35) and the lifting plate (33) are connected by a spring (36).

3. The concrete test block preparation tamping device according to claim 2, characterized in that: The lower end of the tamping rod (34) is formed with a ball head (341).

4. The concrete test block preparation and tamping device according to claim 1, characterized in that: The movable frame (31) is fixed on the slider of the first linear module (37) arranged horizontally, the first linear module (37) is fixed on the slider of the second linear module (38) arranged vertically, and the second linear module (38) is fixed on the frame (1).

5. The concrete test block preparation tamping device according to claim 1, characterized in that: The four outer edges of the trial mold tray (25) are each fixed with multiple limiting blocks (26).

6. The concrete test block preparation tamping device according to claim 5, characterized in that: The inner end of the limiting block (26) is formed with a chamfer.

7. The concrete test block preparation tamping device according to claim 1, characterized in that: There are two trial mold support platforms (2), which are arranged one in front of the other and slidably connected to the translation drive mechanism (4).

8. A tamping device for preparing concrete test blocks according to claim 7, characterized in that: The translation drive mechanism (4) includes a longitudinally arranged screw (41) and a guide rail (42). Two nuts (43) arranged in front and behind are screwed onto the screw (41). The two nuts (43) are respectively fixed on the support bases (21) of the two trial mold lifting platforms (2). The support bases (21) are slidably connected to the guide rail (42).

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