Recycled asphalt mixture grouting test device

Abstract

The utility model provides a recycled asphalt mixture grouting test device. The recycled asphalt mixture grouting test device comprises a base, a transmission shaft, an ejection mechanism, a driving mechanism and a mold unit, an inner cavity is formed in the base, a mold opening is formed in the middle of the upper side of the base, and an insertion opening is formed in the side edge of the mold opening; the transmission shaft penetrates through the inserting opening and is rotationally connected with the base. The circumferential outer wall, close to the bottom, of the transmission shaft is connected with an extrusion block. The ejection mechanism comprises a fixed plate and a movable block which is elastically connected with the fixed plate; a jacking part is arranged on the lower side of the mold unit; the driving mechanism is connected with the transmission shaft and used for driving the transmission shaft to rotate. The transmission shaft rotates through the driving mechanism, when the transmission shaft rotates to a certain angle, the extrusion block abuts against the movable block and pushes the movable block, the movable block abuts against the jacking part on the lower side of the mold unit and applies upward acting force to the mold unit, the mold unit is jacked out, and therefore convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of road construction material performance testing technology, specifically to a grouting test device for recycled asphalt mixture. Background Technology

[0002] Grouting tests are commonly used for performance analysis of recycled asphalt mixtures. Recycled asphalt is frequently used for repairing cement roads. When voids appear in the subgrade of a cement road, holes need to be drilled in the cement pavement, and a grouting pipe is inserted into the void through the hole. Then, recycled asphalt is injected into the void. After the recycled asphalt cools and solidifies, it can fill the void area and prevent road collapse. To improve the grouting effect, a test mold can be used to test the grouting situation before the grouting operation, and the test data and conditions can be recorded for better application in actual grouting operations. In traditional recycled asphalt mixture grouting tests, the mold needs to be removed after grouting to observe the grouting effect. The mold is usually removed manually by the staff, which is inconvenient. Summary of the Invention

[0003] To address the aforementioned issues, this invention provides a grouting test device for recycled asphalt mixtures. After the grouting process is completed, the device can quickly eject the mold, eliminating the need for manual mold removal and improving operational convenience.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A grouting test device for recycled asphalt mixture includes a base, a drive shaft, an ejection mechanism, a drive mechanism, and a mold unit. The base has an inner cavity, and a mold opening communicating with the inner cavity and capable of accommodating the mold unit is formed in the upper middle part of the base. An insertion interface communicating with the inner cavity is provided on the side of the mold opening. The drive shaft passes through the insertion interface and is rotatably connected to the base. An extrusion block is connected to the outer circumferential wall of the drive shaft near the bottom. The ejection mechanism includes a fixed plate fixedly connected to the base and a movable block elastically connected to the fixed plate through an elastic element. The extrusion block can selectively abut against the movable block and compress the elastic element. A lifting part is provided on the lower side of the mold unit. The extrusion block can selectively abut against the lifting part and apply a force to the lifting part in the direction of the upper side of the base. The drive mechanism is connected to the drive shaft and is used to drive the drive shaft to rotate.

[0006] Furthermore, the driving mechanism includes a driving cylinder and a telescopic rod connected to the driving cylinder; the mold unit includes a fixed mold and a moving mold, the fixed mold can cooperate with the mold opening, and the moving mold is connected to the telescopic rod; the outer circumferential wall of the transmission shaft is provided with a guide groove, the moving mold is provided with a guide block that slides with the guide groove, and at least a portion of the guide groove extends spirally around the axis of the transmission shaft.

[0007] Furthermore, the moving mold is provided with a mating hole that slides with the outer circumferential wall of the transmission shaft, and the guide block is connected to the wall of the mating hole.

[0008] Furthermore, the guide groove includes an inclined slot extending spirally around the axis of the drive shaft and relatively close to the lower end of the drive shaft, and a straight slot extending parallel to the axis of the drive shaft and relatively close to the upper end of the drive shaft, wherein the inclined slot and the straight slot are in communication with each other.

[0009] Furthermore, it also includes a grouting head, which is connected to the middle of the moving mold, and the grouting head is positioned corresponding to the mold opening.

[0010] Furthermore, there are two drive shafts, which are symmetrically arranged on both sides of the mold opening.

[0011] Furthermore, the drive cylinder is rotatably connected to the upper end of the transmission shaft.

[0012] Furthermore, there are two ejection mechanisms, which are symmetrically arranged on both sides of the mold opening.

[0013] Furthermore, the bottom of the moving mold is provided with an elastic seal for cooperating with the fixed mold.

[0014] The following beneficial effects can be achieved by applying this utility model:

[0015] 1. This utility model uses a drive mechanism to rotate the transmission shaft. When the transmission shaft rotates to a certain angle, the extrusion block abuts against the movable block and pushes the movable block away from the transmission shaft. During the pushing process, the movable block abuts against the lifting part on the lower side of the mold unit. The movable block applies a force to the mold unit towards the upper side of the base, causing the mold unit to be ejected from the mold opening, thereby improving convenience.

[0016] 2. In some embodiments of this utility model, the moving mold is connected to the driving mechanism, and the moving mold cooperates with the guide groove of the transmission shaft through the guide block. After the grouting is completed, the driving mechanism lifts the moving mold upward. At the same time as the moving mold is lifted, the transmission shaft is driven to rotate through the cooperation structure of the guide block and the guide groove. The transmission shaft then lifts the fixed mold through the lifting mechanism. The synchronous movement of the moving mold and the fixed mold can be controlled by a single driving mechanism. The equipment cost is low and the work efficiency can be further improved. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the recycled asphalt mixture grouting test device in the embodiment;

[0018] Figure 2 for Figure 1 A sectional view;

[0019] Figure 3 This is a schematic diagram of the drive shaft structure;

[0020] In the figure, 1-base, 11-inner cavity, 12-mold opening, 13-insertion interface, 2-drive shaft, 21-extrusion block, 22-guide groove, 221-slanted groove, 222-straight groove, 3-ejection mechanism, 31-fixed plate, 32-moving block, 33-elastic element, 4-drive mechanism, 41-drive cylinder, 42-telescopic rod, 5-mold unit, 51-fixed mold, 511-lifting part, 52-moving mold, 521-fitting hole, 522-guide block, 523-elastic seal, 6-grouting head. Detailed Implementation

[0021] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention. Example

[0022] Reference Figures 1-3 One embodiment of this utility model provides a grouting test device for recycled asphalt mixture, which includes a base 1, a transmission shaft 2, an ejection mechanism 3, a drive mechanism 4, a mold unit 5, and a grouting head 6;

[0023] The base 1 has an inner cavity 11 inside, and the upper middle part of the mold 1 has a mold opening 12 that communicates with the inner cavity 11. On each side of the mold opening 12, there is an insertion interface 13 that communicates with the inner cavity 11.

[0024] There are two drive shafts 2, each drive shaft corresponds to a plug interface 13. The bottom of the drive shaft passes through the plug interface 13 and extends into the inner cavity 11. The drive shaft is rotatably connected to the base through the plug interface. A limiting component is provided at the plug interface so that the drive shaft cannot slide relative to the base along its own axis but can rotate relative to the base around its own axis. The limiting component is usually a bearing. A pressing block 21 is connected to the outer circumference of the part of the drive shaft that extends into the inner cavity. When the drive shaft rotates, it can drive the pressing block to move.

[0025] The number of ejection mechanisms 3 is two, and the two ejection mechanisms are respectively set on both sides of the mold opening. The ejection mechanism includes a fixed plate 31, a movable block 32 and an elastic element 33. The fixed plate 31 is fixedly connected to the base 1. The movable block 32 is elastically connected to the fixed plate 31 through the elastic element 33. The elastic element 33 can reduce or increase the distance between the movable block 32 and the fixed plate 31 by compression or extension. The elastic element can usually be a spring. The movable block has an inclined lifting surface.

[0026] The drive mechanism 4 includes a drive cylinder 41 and two telescopic rods 42 connected to the drive cylinder 41 and arranged towards the base 1. The drive cylinder is connected to the upper end of the transmission shaft 2. The two transmission shafts play a supporting and positioning role for the drive cylinder. The drive cylinder and the transmission shaft are rotatably connected, so that the transmission shaft can rotate relative to the drive cylinder around its own axis. A limiting structure can usually be set to prevent the drive cylinder from separating from the transmission shaft.

[0027] The mold unit 5 includes a fixed mold 51 and a movable mold 52. The fixed mold 51 can mate with the mold opening 12. The movable mold 52 is connected to two telescopic rods 42, so that the drive cylinder can control the assembly relationship between the movable mold 52 and the fixed mold 51 by driving the telescopic rods. The grouting head 6 is located in the middle of the movable mold 52. When the movable mold and the fixed mold are assembled, the grouting head can inject asphalt into the fixed mold. After the asphalt injection is completed, the drive mechanism 4 lifts the movable mold, and the movable mold and the grouting head separate from the fixed mold together. There is a mating hole 521 near each side of the movable mold 52. Each mating hole 521 corresponds to a drive shaft 2. The drive shaft is rotatably connected to the movable mold through the mating hole, so that the drive shaft can rotate relative to the movable mold around its own axis. A guide groove 22 is provided on the outer circumference of the movable mold. Figure 3The guide groove has a helical groove 221 extending around the axis of the drive shaft and a straight groove 222 extending along the axis of the drive shaft. The helical groove and the straight groove are interconnected. A guide block 522 is connected to the wall of the mating hole 521. The guide block mates with the guide groove. When the guide block is in the straight groove, the drive shaft will not rotate during the up-and-down movement of the moving mold 52. When the guide block is in the helical groove, the drive shaft will rotate under force during the up-and-down movement of the moving mold 52. The helical groove and the straight groove are located near the lower end and upper end of the drive shaft, respectively. When the moving mold and the fixed mold are assembled, the guide block is located at the lower end of the helical groove, at which time the extrusion block 21 is located at the far end. At a position away from the movable block 32, after grouting is completed, the movable mold is raised upwards, and the guide block applies force to the drive shaft through the inclined slot, causing the drive shaft to rotate. When the guide block enters the straight slot, the drive shaft causes the extrusion block 21 to rotate to the position corresponding to the movable block 32. The extrusion block abuts against the movable block and moves away from the drive shaft. The lower side of the fixed mold is provided with a lifting part 511, which has an arc-shaped force-bearing surface. When the lifting surface of the movable block contacts the force-bearing surface, the lifting surface applies an upward oblique force to the force-bearing surface. The resultant force of the two ejection mechanisms is vertically upward, causing the fixed mold 51 to be ejected from the mold opening 12.

[0028] The recycled asphalt mixture grouting test device provided in this embodiment can simultaneously eject the fixed mold while lifting the moving mold and the grouting head, which facilitates subsequent observation and recording, avoids the time-consuming process of manually removing the mold, and improves efficiency.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A grouting test device for recycled asphalt mixture, characterized in that: The system includes a base (1), a drive shaft (2), an ejection mechanism (3), a drive mechanism (4), and a mold unit (5). The base has an inner cavity (11), and a mold opening (12) communicating with the inner cavity and capable of accommodating the mold unit is formed in the upper middle part of the base. An insertion interface (13) communicating with the inner cavity is provided on the side of the mold opening. The drive shaft (2) passes through the insertion interface (13) and is rotatably connected to the base. An extrusion block (21) is connected to the outer circumferential wall of the drive shaft near the bottom. The ejection mechanism (3) includes components fixedly connected to the base. The mold unit (5) has a fixed plate (31) and a movable block (32) elastically connected to the fixed plate via an elastic element (33). The extrusion block (21) can selectively abut against the movable block (32) and compress the elastic element (33). The mold unit (5) has a lifting part (511) on its lower side. The extrusion block (21) can selectively abut against the lifting part (511) and apply a force to the lifting part in the direction of the upper side of the base. The drive mechanism (4) is connected to the transmission shaft (2) and is used to drive the transmission shaft to rotate.

2. The grouting test device for recycled asphalt mixture according to claim 1, characterized in that: The drive mechanism (4) includes a drive cylinder (41) and a telescopic rod (42) connected to the drive cylinder; the mold unit (5) includes a fixed mold (51) and a moving mold (52), the fixed mold can cooperate with the mold opening (12), and the moving mold is connected to the telescopic rod (42); the outer circumferential wall of the drive shaft is provided with a guide groove (22), the moving mold is provided with a guide block (522) that slides with the guide groove, and at least a portion of the guide groove extends spirally around the axis of the drive shaft.

3. The grouting test device for recycled asphalt mixture according to claim 2, characterized in that: The moving mold is provided with a mating hole (521) that slides with the outer circumferential wall of the drive shaft, and the guide block (522) is connected to the wall of the mating hole (521).

4. The grouting test device for recycled asphalt mixture according to claim 2, characterized in that: The guide groove (22) includes a slanted groove (221) extending spirally around the axis of the drive shaft and relatively close to the lower end of the drive shaft, and a straight groove (222) extending parallel to the axis of the drive shaft and relatively close to the upper end of the drive shaft, the slanted groove and the straight groove communicating with each other.

5. The grouting test device for recycled asphalt mixture according to claim 2, characterized in that: It also includes a grouting head (6), which is connected to the middle of the moving mold (52), and the grouting head is positioned corresponding to the mold opening (12).

6. The grouting test device for recycled asphalt mixture according to claim 1, characterized in that: There are two drive shafts (2), which are symmetrically arranged on both sides of the mold opening (12).

7. The grouting test device for recycled asphalt mixture according to claim 2, characterized in that: The drive cylinder (41) is rotatably connected to the upper end of the transmission shaft.

8. The grouting test device for recycled asphalt mixture according to claim 1, characterized in that: The number of ejection mechanisms (3) is two, and the two ejection mechanisms are symmetrically arranged on both sides of the mold opening (12).

9. The grouting test device for recycled asphalt mixture according to claim 2, characterized in that: The bottom of the moving mold (52) is provided with an elastic seal (523) for cooperating with the fixed mold.

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