A device for measuring shrinkage of cement-stabilized crushed stone material specimens of various sizes

Abstract

The invention relates to the technical field of specimen shrinkage measurement, and discloses a device for measuring the shrinkage of cement-stabilized crushed stone material specimens of multiple sizes, comprising: a box body, a placement block and a height detector, wherein the placement block is fixedly connected inside the box body, a pushing component is arranged inside the box body, a disengagement component is arranged inside the placement block, a smoothing component is arranged on the surface of the placement block, and a height detector is arranged on the surface of the smoothing component. By using the smoothing component, a second motor is started, and the second motor drives a half gear to rotate through a second output shaft, so that the half gear drives a storage block to move through a frame tooth plate, and then the storage block drives a smoothing plate to move on the top of the placement block, so that the movement of the smoothing plate smoothes the cement-stabilized crushed stone material, and then the top of the cement-stabilized crushed stone material remains flat, so as not to affect the measurement result of the specimen shrinkage, thereby achieving the effect of the smoothing treatment.

Description

Technical Field

[0001] The invention relates to the technical field of specimen shrinkage measurement, in particular to a device for measuring the shrinkage of cement-stabilized crushed stone material specimens of multiple sizes. Background Art

[0002] Cement-stabilized gravel is a commonly used road construction material, usually composed of granular materials, gel materials, water and other materials. The granular materials, gel materials and water and other materials are mixed in a certain proportion and finally formed into a base material with certain strength and stability through steps such as mixing, paving, compaction and maintenance. This material is widely used in the base construction of road projects because of its high strength, good impermeability and frost resistance.

[0003] Publication No. CN218723918U discloses a device for measuring the shrinkage of cement-stabilized crushed stone material specimens of multiple sizes, which relates to the technical field of shrinkage deformation measurement of cement-stabilized crushed stone base, and solves the technical problem that the existing device can only measure cement-stabilized crushed stone material specimens of a single size. Therefore, the present application provides a device for measuring the shrinkage of cement-stabilized crushed stone material specimens of multiple sizes. On the basis of the existing technology, two second clamps that can be adjusted in distance along the specimen placement direction are added, and the detachable first clamp is used to clamp and fix the test piece, and a laser rangefinder and a rangefinder target are respectively provided on the two first clamps, so as to measure the shrinkage deformation of cement-stabilized crushed stone material specimens of different sizes.

[0004] Although the above patents and the prior art can measure specimens of different sizes, and have the advantages of accurate measurement data and easy maintenance, when the device is in use, when the cement-stabilized gravel material specimen is placed in a storage box, it is inconvenient to smooth the top of the cement-stabilized gravel material specimen, which leads to prolonged measurement time and inaccurate measurement results. Moreover, when the cement-stabilized gravel material specimen is smoothed, its surface will fit with the inner wall of the storage box, which requires the use of other tools to separate the solidified cement-stabilized gravel material specimen from the storage box after the measurement. Moreover, since the solidified cement-stabilized gravel material specimen has a heavy weight, it is inconvenient for the operator to pick it up during the picking process. Therefore, we propose a device for measuring the shrinkage of cement-stabilized gravel material specimens of multiple sizes. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device for measuring the shrinkage of cement-stabilized gravel material specimens of various sizes, which has the advantages of smoothing, easy demoulding and easy taking, and solves the problem that when the cement-stabilized gravel material specimen is placed in a storage box, it is inconvenient to smooth the top of the cement-stabilized gravel material specimen, which leads to prolonged measurement time and inaccurate measurement results. The cement-stabilized gravel material specimen will fit with the inner wall of the storage box after solidification, which leads to the need to use other tools to separate the solidified cement-stabilized gravel material specimen from the storage box after the measurement is completed. In addition, since the solidified cement-stabilized gravel material specimen has a movable weight, it is inconvenient for the operator to take it during the taking process.

[0006] In order to achieve the above-mentioned purposes of smoothing, demoulding and taking, the present invention provides the following technical solutions: a device for measuring the shrinkage of cement-stabilized crushed stone material specimens of various sizes, comprising: a box body, a placement block and a height detector, the surface of the box body is provided with a control panel, the interior of the box body is provided with a slideway groove, the back of the box body is fixedly connected with a feed pipe, the interior of the box body is fixedly connected with a placement block, the interior of the box body is provided with a pushing component, the interior of the placement block is provided with a detachment component, the surface of the placement block is provided with a smoothing component, the surface of the smoothing component is provided with a height detector, and the interior of the detachment component is provided with a cutting The switching component can adjust the size of the cement-stabilized gravel material and provide power for the operation of the disengagement component, the disengagement component can demold the solidified cement-stabilized gravel material on the top of the placement block to prevent the solidified cement-stabilized gravel material from sticking to the top of the placement block, the smoothing component can smooth the top of the cement-stabilized gravel material and provide power for the movement of the solidified cement-stabilized gravel material to prevent the cement-stabilized gravel material from affecting the shrinkage measurement result due to the uneven top, and the switching component can connect the driving force of the pushing component with the power of the disengagement component, thereby driving the disengagement component.

[0007] Furthermore, the pushing assembly includes a first motor fixedly connected to the inside of the box and a screw rod rotatably connected to the inside of the box, the output end of the first motor is fixedly connected to a first output shaft, the surface of the first output shaft is fixedly connected to a driving sprocket, the surface of the screw rod is fixedly connected to a driven sprocket, and the driven sprocket and the driving sprocket are transmitted by a chain.

[0008] Furthermore, a screw block is threadedly connected to the surface of the screw rod, and the screw block is slidably connected to the inside of the box body. A push rod is fixedly connected to the surface of the screw block, and one end of the push rod is fixedly connected to a push plate.

[0009] Furthermore, two opening and closing grooves and two sliding grooves are provided on the top of the placement block, and a fixing plate is fixedly connected to the top of the placement block.

[0010] Furthermore, the disengagement assembly includes a driving gear arranged on the surface of the first output shaft and a first rotating rod rotatably connected to the inside of the box body through a support plate, and a passive gear is fixedly connected to the surface of the first rotating rod, and the passive gear meshes with the driving gear for transmission.

[0011] Furthermore, the disengagement assembly also includes a second rotating rod rotatably connected to the two opening and closing grooves, the surface of the second rotating rod is fixedly connected to a driven gear, an opening and closing plate and a lifting gear, the driven gear is meshed with the passive gear for transmission, and the opening and closing plate is arranged inside the opening and closing groove.

[0012] Furthermore, the disengagement assembly also includes a lifting tooth plate slidably connected to the inside of the placement block, the top of the lifting tooth plate is fixedly connected to a lifting plate, and the lifting tooth plate is meshed with the lifting gear for transmission.

[0013] Furthermore, the smoothing component includes a second motor fixedly connected to the inside of the box and a frame tooth plate slidably connected to the inside of two slide grooves, the output end of the second motor is fixedly connected to the second output shaft, the surface of the second output shaft is fixedly connected to a half gear, the half gear is meshed with the frame tooth plate for transmission, and the top of the frame tooth plate is fixedly connected to a storage block.

[0014] Furthermore, a cylinder is fixedly connected to the top of the storage block, an output end of the cylinder is differentially connected to a telescopic rod, a smoothing plate is slidably connected to the inside of the storage block, a top of the smoothing plate is fixedly connected to the bottom of the telescopic rod, and a height detector is fixedly connected to one side of the storage block.

[0015] Furthermore, the switching assembly includes a conductive ring arranged on the surface of the first output shaft through a support rod, an electromagnetic ring fixedly connected to the inside of the driving gear, and a magnetic block slidably connected to the inside of the driving gear. The surface of the magnetic block is fixedly connected to a limit rod, and the surface of the first output shaft is provided with a plurality of limit holes that are compatible with the shape of the limit rod.

[0016] Compared with the prior art, the present invention provides a device for measuring the shrinkage of cement-stabilized crushed stone material specimens of multiple sizes, which has the following beneficial effects:

[0017] 1. The device for measuring the shrinkage of cement-stabilized gravel material specimens of multiple sizes uses a smoothing component to start the cylinder, which drives the smoothing plate to move downward through the telescopic rod, so that the smoothing plate moves to a suitable position, and then starts the second motor, which drives the half gear to rotate through the second output shaft, so that the half gear drives the storage block to move through the frame tooth plate, and then the storage block drives the smoothing plate to move on the top of the placement block, so that the movement of the smoothing plate smoothes the cement-stabilized gravel material, and then the top of the cement-stabilized gravel material remains flat, so as not to affect the measurement result of the specimen shrinkage, thereby achieving the effect of smoothing.

[0018] 2. The device for measuring the shrinkage of cement-stabilized gravel material specimens of various sizes starts the switching component by cooperating with the pushing component and the disengaging component, and then controls the first output shaft to reverse through the first motor, and the first output shaft drives the passive gear to rotate on the surface of the first rotating rod through the active gear, so that the passive gear drives the second rotating rod to rotate through the driven gear, and then the second rotating rod drives the opening and closing plate to open and the lifting gear to rotate, and the lifting gear drives the lifting tooth plate to move, so that the lifting tooth plate separates the solidified cement-stabilized gravel material from the placement block through the lifting plate, so that the cement-stabilized gravel material does not adhere to other structures, thereby achieving the effect of facilitating demoulding.

[0019] 3. The device for measuring the shrinkage of cement-stabilized gravel material specimens of various sizes uses a smoothing component. When the cement-stabilized gravel material is demoulded, the cylinder is started, and the cylinder drives the smoothing plate to move downward through the telescopic rod, so that the smoothing plate moves to the top of the placement block, and then the second motor controls the second output shaft to reverse, so that the second output shaft drives the frame tooth plate to move inside the slide groove through the half gear, so that the frame tooth plate drives the solidified cement-stabilized gravel material to move into the slide groove through the storage block and the smoothing plate, and then the solidified cement-stabilized gravel material is moved out of the box, thereby achieving the effect of easy picking. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from another viewing angle;

[0022] Figure 3 It is a schematic diagram of the cutaway three-dimensional structure of the box body of the present invention;

[0023] Figure 4 It is a schematic diagram of the internal three-dimensional structure of the box body of the present invention;

[0024] Figure 5 This is a schematic diagram of the three-dimensional structure of the driving assembly of the present invention;

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the separation component of the present invention;

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the second rotating rod of the present invention;

[0027] Figure 8 This is a schematic diagram of the three-dimensional structure of the jacking tooth plate of the present invention;

[0028] Fig. 9 This is a schematic diagram of the three-dimensional structure of the placement block of the present invention;

[0029] Fig.10 This is a schematic diagram of the three-dimensional structure of the smoothing component of the present invention;

[0030] Fig.11 It is a schematic diagram of a three-dimensional structure of a storage block in cross section according to the present invention;

[0031] Fig.12 This is a schematic diagram of the three-dimensional structure of the driving gear of the present invention;

[0032] Fig.13 It is a schematic diagram of the three-dimensional structure of the switching component of the present invention.

[0033] In the figure: 1, box; 11, control panel; 12, slideway groove; 13, feed pipe; 14, placement block; 141, opening and closing groove; 142, slideway; 143, fixing plate; 2, pushing assembly; 21, first motor; 22, first output shaft; 221, driving sprocket; 222, chain; 23, screw; 231, driven sprocket; 232, screw block; 233, push rod; 234, pushing plate; 3, disengagement assembly; 31, driving gear; 32, first rotating rod; 321, passive gear Wheel; 33, second rotating rod; 331, driven gear; 332, opening and closing plate; 333, lifting gear; 34, lifting gear plate; 341, lifting plate; 4, smoothing assembly; 41, second motor; 42, second output shaft; 421, half gear; 43, frame gear plate; 44, storage block; 441, cylinder; 442, telescopic rod; 443, smoothing plate; 444, height detector; 5, switching assembly; 51, conductive ring; 52, electromagnetic ring; 53, magnetic block; 531, limit rod. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] For specific embodiment 1, please refer to Figures 1 to 5A device for measuring the shrinkage of cement-stabilized gravel material specimens of multiple sizes, comprising: a box body 1, a placement block 14 and a height detector 444, a control panel 11 is arranged on the surface of the box body 1, a slideway groove 12 is provided inside the box body 1, a feed pipe 13 is fixedly connected to the back of the box body 1, a placement block 14 is fixedly connected inside the box body 1, a pushing component 2 is arranged inside the box body 1, a separation component 3 is arranged inside the placement block 14, a smoothing component 4 is arranged on the surface of the placement block 14, a height detector 444 is arranged on the surface of the smoothing component 4, a switching component 5 is arranged inside the separation component 3, the pushing component 2 can adjust the size of the cement-stabilized gravel material and provide power for the operation of the separation component 3, the separation component 3 can demold the solidified cement-stabilized gravel material on the top of the placement block 14 to prevent the solidified cement-stabilized gravel material from adhering to the top of the placement block 14, the smoothing component 4 can smooth the top of the cement-stabilized gravel material and stabilize the solidified cement-stabilized gravel material The movement of the cement stabilized gravel material is provided with power to avoid the impact of the shrinkage measurement result due to the uneven top of the cement stabilized gravel material. The switching component 5 can connect the driving force of the pushing component 2 with the power of the disengaging component 3, thereby driving the disengaging component 3. The pushing component 2 includes a first motor 21 fixedly connected to the inside of the box body 1 and a screw 23 rotatably connected to the inside of the box body 1. The output end of the first motor 21 is fixedly connected to the first output shaft 22. The surface of the first output shaft 22 is fixedly connected to the driving sprocket 221. The screw A driven sprocket 231 is fixedly connected to the surface of the screw 23, and the driven sprocket 231 and the driving sprocket 221 are driven by a chain 222. A screw block 232 is threadedly connected to the surface of the screw 23, and the screw block 232 is slidably connected to the inside of the box body 1. A push rod 233 is fixedly connected to the surface of the screw block 232, and one end of the push rod 233 is fixedly connected to a push plate 234. Two opening and closing grooves 141 and two sliding grooves 142 are provided on the top of the placement block 14, and a fixed plate 143 is fixedly connected to the top of the placement block 14;

[0036] It should be noted that a temperature-controlled lamp and a blower are provided inside the box 1, and the irradiation angle of the temperature-controlled lamp can be adjusted. By adjusting the irradiation temperature and irradiation angle of the temperature-controlled lamp and the wind speed of the blower, the influence of cement-stabilized gravel material on the measurement of cement-stabilized gravel material at different temperatures, different irradiation angles and different wind speeds can be simulated, thereby making the measurement result of cement-stabilized gravel material more accurate.

[0037] When cement-stabilized crushed stone materials of different sizes need to be measured, the first motor 21 is started, and the first motor 21 drives the driving sprocket 221 to rotate through the first output shaft 22, and the driving sprocket 221 drives the driven sprocket 231 to rotate through the chain 222, so that the screw rod 23 drives the screw block 232 to move, and the screw block 232 drives the push plate 234 to move toward the fixed plate 143 through the push rod 233, so that the cement-stabilized crushed stone materials can be formed into shapes of different sizes;

[0038] For specific embodiment 2, please refer to Figures 1 to 13 According to a device for measuring shrinkage of cement-stabilized crushed stone material specimens of multiple sizes provided in the first embodiment, this embodiment provides a further technical solution:

[0039] The disengagement assembly 3 includes a driving gear 31 arranged on the surface of the first output shaft 22 and a first rotating rod 32 rotatably connected to the inside of the box body 1 through a support plate, a passive gear 321 is fixedly connected to the surface of the first rotating rod 32, and the passive gear 321 meshes with the driving gear 31 for transmission. The disengagement assembly 3 also includes a second rotating rod 33 rotatably connected to the two opening and closing grooves 141, a driven gear 331, an opening and closing plate 332 and a lifting gear 333 are fixedly connected to the surface of the second rotating rod 33, and the driven gear 331 meshes with the passive gear 321 for transmission, and the opening and closing plate 332 is arranged in the opening and closing groove 141. The disengagement assembly 3 further comprises a lifting tooth plate 34 slidably connected to the inside of the placement block 14, a lifting plate 341 is fixedly connected to the top of the lifting tooth plate 34, the lifting tooth plate 34 is meshed with the lifting gear 333 for transmission, and the switching assembly 5 comprises a conductive ring 51 arranged on the surface of the first output shaft 22 through a support rod, an electromagnetic ring 52 fixedly connected to the inside of the driving gear 31 and a magnetic block 53 slidably connected to the inside of the driving gear 31, a limit rod 531 is fixedly connected to the surface of the magnetic block 53, and a plurality of limit holes matching the shape of the limit rod 531 are provided on the surface of the first output shaft 22;

[0040] It should be noted that the surface of the opening and closing plate 332 is provided with a scale bar, and the shrinkage results of cement-stabilized crushed stone materials of different thicknesses can be judged by comparing the height of the cement-stabilized crushed stone materials on the top of the placement block 14 with the scale bar;

[0041] When it is necessary to demould the solidified cement-stabilized gravel material, the conductive ring 51 is energized, so that the conductive ring 51 contacts the electromagnetic ring 52 to generate magnetism, thereby causing the electromagnetic ring 52 to generate a repulsive force with the magnetic block 53, so that the magnetic block 53 drives the limiting rod 531 to be inserted into the first output shaft 22, and then the first motor 21 controls the first output shaft 22 to reverse, and the first output shaft 22 drives the driven gear 321 to rotate on the surface of the first rotating rod 32 through the driving gear 31, so that the driven gear 321 drives the second rotating rod 33 to rotate through the driven gear 331, and then the second rotating rod 33 drives the opening and closing plate 332 to open and the lifting gear 333 to rotate, and the lifting gear 333 drives the lifting gear plate 34 to move, so that the lifting gear plate 34 separates the solidified cement-stabilized gravel material from the placement block 14 through the lifting plate 341, thereby preventing the cement-stabilized gravel material from being adhered to the opening and closing plate 332, the placement block 14 and the fixed plate 143;

[0042] For specific embodiment 3, please refer to Figures 1 to 11 According to the device for measuring shrinkage of cement-stabilized crushed stone material specimens of multiple sizes provided in the second specific embodiment, this embodiment provides a further technical solution:

[0043] The smoothing component 4 includes a second motor 41 fixedly connected to the inside of the box body 1 and a frame toothed plate 43 slidably connected to the inside of the two slide grooves 142, the output end of the second motor 41 is fixedly connected to the second output shaft 42, the surface of the second output shaft 42 is fixedly connected to a half gear 421, the half gear 421 is meshed with the frame toothed plate 43 for transmission, the top of the frame toothed plate 43 is fixedly connected to a storage block 44, one side of the storage block 44 is fixedly connected to a height detector 444, and the inside of the storage block 44 is slidably connected to a smoothing plate 443;

[0044] It should be noted that the surfaces of the fixed plate 143, the opening and closing plate 332 and the pushing plate 234 that contact each other are all provided with a sealing layer, so as to ensure that when the cement-stabilized crushed stone material enters the top of the placement block 14, the cement-stabilized crushed stone material will not flow out from the gap between the fixed plate 143, the opening and closing plate 332 and the pushing plate 234;

[0045] When the cement-stabilized gravel material is placed on the top of the placement block 14 and needs to be smoothed, the second motor 41 is started, and the second motor 41 drives the half gear 421 to rotate through the second output shaft 42, so that the half gear 421 drives the storage block 44 to move through the frame toothed plate 43, and then the storage block 44 drives the smoothing plate 443 to move on the top of the placement block 14, so that the movement of the smoothing plate 443 smoothes the cement-stabilized gravel material, and then the top of the cement-stabilized gravel material remains flat, so as not to affect the measurement result of the shrinkage of the specimen;

[0046] For specific example 4, please refer to Figures 1 to 11 According to a device for measuring shrinkage of cement-stabilized crushed stone material specimens of multiple sizes provided in the third specific embodiment, this embodiment provides a further technical solution:

[0047] The top of the storage block 44 is fixedly connected to a cylinder 441, the output end of the cylinder 441 is differentially connected to a telescopic rod 442, and the top of the caressing plate 443 is fixedly connected to the bottom of the telescopic rod 442;

[0048] It should be noted that a plurality of placement grooves are provided on the surface of the slide groove 12, and a rotating column is rotatably connected to the interior of each of the placement grooves, and a roller is fixedly connected to the surface of the rotating column. When the solidified cement-stabilized crushed stone material is pushed into the interior of the slide groove 12, the cooperation between the rotating column and the roller enables the solidified cement-stabilized crushed stone material to be smoothly moved out of the interior of the box body 1 without directly rubbing the slide groove 12.

[0049] When the solidified cement-stabilized gravel material needs to be moved out of the box body 1, the cylinder 441 is started, and the cylinder 441 drives the smoothing plate 443 to move downward through the telescopic rod 442, so that the smoothing plate 443 moves to the top of the placement block 14, and then the second motor 41 controls the second output shaft 42 to reverse, so that the second output shaft 42 drives the frame toothed plate 43 to move inside the slide groove 142 through the half gear 421, so that the frame toothed plate 43 drives the solidified cement-stabilized gravel material to move into the slide groove 12 through the storage block 44 and the smoothing plate 443, so that the solidified cement-stabilized gravel material is moved out of the box body 1;

[0050] Working principle: When it is necessary to measure the shrinkage of the cement-stabilized gravel material, the first motor 21 is started, and the first motor 21 drives the driving sprocket 221 to rotate through the first output shaft 22, and the driving sprocket 221 drives the driven sprocket 231 to rotate through the chain 222, so that the screw rod 23 drives the screw block 232 to move, and the screw block 232 drives the push plate 234 to move toward the fixed plate 143 through the push rod 233, so that the cement-stabilized gravel material can be formed into shapes of different sizes, and then the cement-stabilized gravel material is transported to the top of the placement block 14 through the feed pipe 13. When it is necessary to smooth the top of the cement-stabilized gravel material, the second motor 41 is started, and the second motor 41 drives the half gear 4 through the second output shaft 42 21 rotates, so that the half gear 421 drives the storage block 44 to move through the frame tooth plate 43, and then the storage block 44 drives the smoothing plate 443 to move on the top of the placement block 14, so that the movement of the smoothing plate 443 smoothes the cement-stabilized gravel material, and then the top of the cement-stabilized gravel material is kept flat, so as not to affect the measurement result of the shrinkage of the specimen, and then by adjusting the irradiation temperature and irradiation angle of the temperature-controlled lamp and the wind speed of the blower, the influence of the cement-stabilized gravel material on the measurement of the cement-stabilized gravel material at different temperatures, different irradiation angles and different wind speeds is simulated, and then the shrinkage height of the cement-stabilized gravel material specimen is measured by the height detector 444, and then the measurement result is transmitted to the inside of the control panel 11, and the solidification needs to be When the cement-stabilized crushed stone material is demoulded, the conductive ring 51 is energized, so that the conductive ring 51 contacts the electromagnetic ring 52 to generate magnetism, and then the electromagnetic ring 52 and the magnetic block 53 generate a repulsive force, so that the magnetic block 53 drives the limiting rod 531 to be inserted into the first output shaft 22, and then the first motor 21 controls the first output shaft 22 to reverse, and the first output shaft 22 drives the passive gear 321 to rotate on the surface of the first rotating rod 32 through the active gear 31, so that the passive gear 321 drives the second rotating rod 33 to rotate through the driven gear 331, and then the second rotating rod 33 drives the opening and closing plate 332 to open and the lifting gear 333 to rotate, and the lifting gear 333 drives the lifting gear plate 34 to move, so that the lifting gear plate 34 passes through the lifting gear 333. The lifting plate 341 separates the solidified cement-stabilized gravel material from the placement block 14, so that the cement-stabilized gravel material does not adhere to the opening and closing plate 332, the placement block 14 and the fixing plate 143. When the solidified cement-stabilized gravel material needs to be moved out of the box body 1, the cylinder 441 is started, and the cylinder 441 drives the smoothing plate 443 to move downward through the telescopic rod 442, so that the smoothing plate 443 moves to the top of the placement block 14, and then the second output shaft 42 is controlled to reverse through the second motor 41, so that the second output shaft 42 drives the frame tooth plate 43 to move inside the slide groove 142 through the half gear 421, so that the frame tooth plate 43 drives the solidified cement-stabilized gravel material to move into the slide groove 12 through the receiving block 44 and the smoothing plate 443.Then the solidified cement-stabilized gravel material is moved out of the box 1.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring shrinkage of cement-stabilized crushed stone material specimens of various sizes, comprising: A box (1), a placement block (14) and a height detector (444), characterized in that: a control panel (11) is arranged on the surface of the box (1), a slideway groove (12) is provided inside the box (1), a feed pipe (13) is fixedly connected to the back of the box (1), a placement block (14) is fixedly connected to the inside of the box (1), a pushing component (2) is arranged inside the box (1), a separation component (3) is arranged inside the placement block (14), a smoothing component (4) is arranged on the surface of the placement block (14), a height detector (444) is arranged on the surface of the smoothing component (4), and a switching component (5) is arranged inside the separation component (3); The pushing component (2) can adjust the size of the cement-stabilized gravel material and provide power for the operation of the disengaging component (3). The disengaging component (3) can demold the solidified cement-stabilized gravel material on the top of the placement block (14) to prevent the solidified cement-stabilized gravel material from adhering to the top of the placement block (14). The smoothing component (4) can smooth the top of the cement-stabilized gravel material and provide power for the movement of the solidified cement-stabilized gravel material to prevent the cement-stabilized gravel material from affecting the shrinkage measurement result due to the uneven top. The switching component (5) can connect the driving force of the pushing component (2) with the power of the disengaging component (3), thereby enabling the disengaging component (3) to move. The pushing component (2) comprises a first motor (21) fixedly connected to the inside of the box (1) and a screw rod (23) rotatably connected to the inside of the box (1); the output end of the first motor (21) is fixedly connected to a first output shaft (22); the surface of the first output shaft (22) is fixedly connected to a driving sprocket (221); the surface of the screw rod (23) is fixedly connected to a driven sprocket (231); the driven sprocket (231) and the driving sprocket (221) are driven by a chain (222); the top of the placement block (14) is provided with two opening and closing grooves (141) and two sliding grooves (142); the disengagement component (3) comprises a first motor (21) fixedly connected to the inside of the box (1); the first output shaft (22) is fixedly connected to a driving sprocket (221); the surface of the screw rod (23) is fixedly connected to a driven sprocket (231); the driven sprocket (231) and the driving sprocket (221) are driven by a chain (222); two opening and closing grooves (141) and two sliding grooves (142) are provided on the top of the placement block (14); the disengagement component (3) comprises a first motor (21) fixedly connected to the inside of the box (1) and a first output shaft (22); a first output shaft (22) is fixedly connected to the surface of the first output shaft (22); a driven sprocket (231) and a driven sprocket (221) are fixedly connected to the surface of the screw rod (23); a driven sprocket (231) and a driven sprocket (221) are driven by a chain (222); two opening and closing grooves (141) and two sliding grooves (142) are provided on the top of the placement block (14); the disengagement component The driving gear (31) on the surface of the output shaft (22) is rotatably connected to a first rotating rod (32) inside the box body (1) via a support plate; a driven gear (321) is fixedly connected to the surface of the first rotating rod (32); the driven gear (321) meshes with the driving gear (31) for transmission; the disengagement assembly (3) further comprises a second rotating rod (33) rotatably connected to the two opening and closing grooves (141); a driven gear (331), an opening and closing plate (332) and a lifting gear (333) are fixedly connected to the surface of the second rotating rod (33); the driven gear (331) meshes with the driven gear (321) for transmission; the opening and closing plate (332) is arranged inside the opening and closing groove (141); The disengagement assembly (3) further comprises a lifting tooth plate (34) slidably connected to the inside of the placement block (14); a lifting plate (341) is fixedly connected to the top of the lifting tooth plate (34); the lifting tooth plate (34) is meshed with a lifting gear (333) for transmission; the switching assembly (5) comprises a conductive ring (51) arranged on the surface of the first output shaft (22) via a support rod, an electromagnetic ring (52) fixedly connected to the inside of the driving gear (31), and a magnetic block (53) slidably connected to the inside of the driving gear (31); a limit rod (531) is fixedly connected to the surface of the magnetic block (53); and a plurality of limit holes matching the shape of the limit rod (531) are provided on the surface of the first output shaft (22).

2. The device for measuring shrinkage of cement-stabilized crushed stone material specimens of multiple sizes according to claim 1, characterized in that: The surface of the screw rod (23) is threadedly connected to a screw block (232), the screw block (232) is slidably connected to the inside of the box body (1), the surface of the screw block (232) is fixedly connected to a push rod (233), and one end of the push rod (233) is fixedly connected to a push plate (234).

3. The device for measuring shrinkage of cement-stabilized crushed stone material specimens of multiple sizes according to claim 2, characterized in that: A fixing plate (143) is fixedly connected to the top of the placement block (14).

4. The device for measuring shrinkage of cement-stabilized crushed stone material specimens of various sizes according to claim 1, characterized in that: The smoothing component (4) comprises a second motor (41) fixedly connected to the inside of the box body (1) and a frame toothed plate (43) slidably connected to the inside of two slide grooves (142); the output end of the second motor (41) is fixedly connected to a second output shaft (42); the surface of the second output shaft (42) is fixedly connected to a half gear (421); the half gear (421) is meshed with the frame toothed plate (43) for transmission; the top of the frame toothed plate (43) is fixedly connected to a storage block (44).

5. The device for measuring shrinkage of cement-stabilized crushed stone material specimens of multiple sizes according to claim 4, characterized in that: The top of the storage block (44) is fixedly connected to a cylinder (441), the output end of the cylinder (441) is differentially connected to a telescopic rod (442), the interior of the storage block (44) is slidably connected to a caressing plate (443), the top of the caressing plate (443) is fixedly connected to the bottom of the telescopic rod (442), and one side of the storage block (44) is fixedly connected to a height detector (444).

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