Hydraulic demolding machine for asphalt mixture detection

Abstract

The hydraulic demolding machine comprises a machine body, a lifting mechanism is arranged in the machine body, the lifting mechanism is connected with a jacking rod, a lower supporting plate and an upper top plate are sequentially arranged at the top of the machine body from bottom to top, the lower supporting plate is provided with a first through hole for the jacking rod to penetrate through, and the upper top plate is provided with a second through hole for the jacking rod to penetrate through. A second through hole is formed in the upper top plate; the device further comprises a sleeve assembly, the sleeve assembly is arranged between the lower supporting plate and the upper top plate, the sleeve assembly comprises a first sleeve, a second sleeve and a rubber pad piece, the first sleeve and the second sleeve are in vertical coaxial butt joint, and the rubber pad piece is arranged between the first sleeve and the second sleeve. The lower end of the first sleeve is in extrusion fit with the top of the lower supporting plate, and the upper end of the second sleeve is in extrusion fit with the bottom of the upper top plate. And by adding the sleeve assembly, the displacement of the mold during demolding is more stable, and the displacement deviation is prevented from being too large.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic demolding machine technology, and in particular to a hydraulic demolding machine for testing asphalt mixtures. Background Technology

[0002] The hydraulic demolding machine is a multi-purpose demolding machine that works in conjunction with a multi-functional electric compactor, a Marshall electric compactor, and a light and heavy manual compactor. During asphalt mixture testing, the asphalt mixture needs to be poured into a mold and compacted. After curing, the asphalt mixture is removed for testing, and this process requires the use of a hydraulic demolding machine to demold the mixture from the mold.

[0003] Existing hydraulic demolding machines are not convenient for positioning the mold during demolding, and are prone to displacement deviation, which can damage the mold. In this case, the mold can only be straightened by hand, but this method is not flexible and there is a risk of hand injury. Utility Model Content

[0004] In view of this, this utility model proposes a hydraulic demolding machine for asphalt mixture testing, the purpose of which is to avoid the need to manually calibrate the mold position during demolding and prevent safety accidents such as hand injuries.

[0005] The technical solution of this utility model is implemented as follows:

[0006] A hydraulic demolding machine for asphalt mixture testing includes a machine body with a lifting mechanism connected to a lifting rod. The top of the machine body has a lower support plate and an upper top plate arranged sequentially from bottom to top. The lower support plate has a first through hole for the lifting rod to pass through, and the upper top plate has a second through hole. The machine body also includes a sleeve assembly disposed between the lower support plate and the upper top plate. The sleeve assembly includes a first sleeve, a second sleeve, and a rubber pad. The first sleeve and the second sleeve are vertically coaxially connected, and the rubber pad is disposed between the first sleeve and the second sleeve. The lower end of the first sleeve forms a compression fit with the top of the lower support plate, and the upper end of the second sleeve forms a compression fit with the bottom of the upper top plate.

[0007] As a further alternative, both the first sleeve and the second sleeve are metal cylindrical structures.

[0008] As a further alternative, the first sleeve and the second sleeve are transparent cylindrical structures.

[0009] As a further alternative, the rubber pad has a ring-shaped structure.

[0010] As a further alternative, the rubber pad is adhered to the upper end of the first sleeve or the lower end of the second sleeve.

[0011] As a further optional solution, the rubber pad includes an annular gasket, with a cylindrical hoop connected to the outer ring of the gasket. The cross-section of the hoop and the gasket are L-shaped. The hoop is elastically clamped to the upper end of the first sleeve or the lower end of the second sleeve.

[0012] As a further optional solution, the machine body is provided with at least two vertically arranged uprights, and the lower support plate and the upper top plate are arranged on the uprights.

[0013] The hydraulic demolding machine for asphalt mixture testing disclosed in this application has at least the following advantages over the prior art:

[0014] This hydraulic demolding machine for asphalt mixture testing makes the mold displacement more stable during demolding by adding a sleeve assembly, avoiding excessive displacement deviation, eliminating the need for manual mold straightening, and protecting both the machine and the mold. The sleeve assembly has a simple structure, and adding it will not significantly increase costs or affect the original working process of the hydraulic demolding machine, making it highly practical. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of a hydraulic demolding machine for asphalt mixture testing according to an embodiment of the present invention;

[0017] Figure 2 This is a cross-sectional schematic diagram of the sleeve assembly in one embodiment;

[0018] Figure 3 This is a cross-sectional schematic diagram of the sleeve assembly in another embodiment.

[0019] In the picture: 100, Marshall mold;

[0020] 1. Organism;

[0021] 2. Lifting rod;

[0022] 3. Lower support plate; 31. First perforation;

[0023] 4. Top plate; 41. Second perforation;

[0024] 5. Sleeve assembly; 51. First sleeve; 52. Second sleeve; 53. Rubber gasket; 531. Washer; 532. Hoop;

[0025] 6. Erecting poles;

[0026] 7. Nuts. Detailed Implementation

[0027] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0030] Example 1

[0031] refer to Figure 1 and Figure 2This invention discloses a hydraulic demolding machine for asphalt mixture testing, comprising a machine body 1, a lifting mechanism inside the machine body 1, a lifting rod 2 connected to the lifting mechanism, a lower support plate 3 and an upper top plate 4 arranged sequentially from bottom to top on the top of the machine body 1, the lower support plate 3 having a first through hole 31 for the lifting rod 2 to pass through, and the upper top plate 4 having a second through hole 41; it also includes a sleeve assembly 5, which is disposed between the lower support plate 3 and the upper top plate 4, the sleeve assembly 5 including a first sleeve 51, a second sleeve 52 and a rubber pad 53, the first sleeve 51 and the second sleeve 52 being vertically coaxially connected, the rubber pad 53 being disposed between the first sleeve 51 and the second sleeve 52, the lower end of the first sleeve 51 forming a compression fit with the top of the lower support plate 3, and the upper end of the second sleeve 52 forming a compression fit with the bottom of the upper top plate 4.

[0032] Specifically, in the initial state, the sleeve assembly 5 is not installed on the lower support plate 3. When it is necessary to demold the asphalt mixture in the Marshall mold 100, the lifting rod 2 is raised to a position level with the lower support plate 3, and then the Marshall mold 100 is placed above the lifting rod 2. Then, the first sleeve 51 is placed on the lower support plate 3, with the first sleeve 51 fitted on the outside of the Marshall mold 100. Next, the rubber pad 53 is placed on top of the first sleeve 51, and finally, the second sleeve 52 is placed on top of the first sleeve 51. When placing the second sleeve 52, the second sleeve 52 squeezes the rubber pad 53, so that the first sleeve 51 and the second sleeve 52 can squeeze the lower support plate 3 and the upper top plate 4 respectively, thereby making the setting of the first sleeve 51 and the second sleeve 52 more stable and less prone to collapse.

[0033] After setting up the sleeve assembly 5, as follows Figure 2 As shown, the lifting rod 2 lifts the Marshall mold 100 upwards until it abuts against the bottom of the upper top plate 4. Under the limiting effect of the sleeve assembly 5, the position of the Marshall mold 100 will not deviate significantly during its ascent, ensuring that the position of the asphalt mixture inside the Marshall mold 100 corresponds vertically to the second perforation 41 of the upper top plate 4. As the lifting rod 2 continues to lift, it can eject the asphalt mixture out of the second perforation 41. The Marshall mold 100 is a metal cylinder, and the asphalt mixture inside is cylindrical. The cross-section of the asphalt mixture is a circle with a diameter slightly smaller than the diameter of the second perforation 41. Therefore, as long as the position of the asphalt mixture is not significantly deviated and it is within the vertical projection range of the second perforation 41, the asphalt mixture can be smoothly discharged. After discharge, the lifting rod 2 is reset, and then the second sleeve 52 and the first sleeve 51 are removed sequentially.

[0034] Thus, by adding the sleeve assembly 5, the hydraulic demolding machine for asphalt mixture testing makes the displacement of the mold more stable during demolding, avoids excessive displacement deviation, eliminates the need for manual mold straightening, and also protects the machine and the mold. The sleeve assembly 5 has a simple structure, and adding the sleeve assembly 5 will not increase the cost too much, nor will it affect the original working process of the hydraulic demolding machine, making it highly practical.

[0035] It should be noted that the diameter of the sleeve assembly 5 in this embodiment is slightly larger than the diameter of the Marshall mold 100. Preferably, there is a gap of 2-8 mm between the sleeve assembly 5 and the Marshall mold 100. In this embodiment, the hydraulic demolding machine for asphalt mixture testing is only considered for demolding one type of Marshall mold 100. In other embodiments, the hydraulic demolding machine for asphalt mixture testing can be considered for demolding multiple types of Marshall molds 100, and different types of Marshall molds 100 should be matched with sleeve assemblies 5 of different diameters.

[0036] In the above scheme, the first sleeve 51 and the second sleeve 52 can be metal cylindrical structures, so that the first sleeve 51 and the second sleeve 52 have high structural strength and prevent easy deformation; or they can be transparent cylindrical structures, so that the movement of the Marshall mold 100 inside can be observed through the sleeve assembly 5.

[0037] like Figure 2 As shown, the rubber pad 53 in this embodiment has a ring-shaped structure. Preferably, to improve the convenience of setting the sleeve assembly 5, the rubber pad 53 is glued to the upper end of the first sleeve 51 or the lower end of the second sleeve 52. In this way, when arranging the sleeve assembly 5, after placing the first sleeve 51, the second sleeve 52 can be placed directly, and the step of placing the rubber pad 53 can be omitted.

[0038] In the above scheme, such as Figure 1 As shown, the machine body 1 is provided with at least two vertically arranged uprights 6, and the lower support plate 3 and the upper top plate 4 are arranged on the uprights 6; wherein, the lower support plate 3 and the upper top plate 4 are respectively sleeved on the uprights 6, and the lower support plate 3 is provided with nuts 7 on both the upper and lower sides, and the nuts 7 are threadedly connected to the uprights 6. The position of the lower support plate 3 is fixed by the two nuts 7, and the height position of the lower support plate 3 can also be adjusted by adjusting the position of the nuts 7 on the uprights 6; the upper top plate 4 is fixed on the uprights 6 in the same way as the lower support plate 3.

[0039] The first sleeve 51 and the second sleeve 52 can respectively squeeze the lower support plate 3 and the upper top plate 4, which can eliminate the thread gap between the nut 7 and the upright 6, so that the lower support plate 3 and the upper top plate 4 will not shake, making demolding more stable.

[0040] Example 2

[0041] like Figure 1 and Figure 3 The difference between Example 2 and Example 1 lies in the different structure of the rubber pad 53.

[0042] In this embodiment, the rubber pad 53 includes an annular pad 531, and a cylindrical hoop 532 is connected to the outer ring of the pad 531. The cross-section of the hoop 532 and the pad 531 is L-shaped. The hoop 532 is elastically clamped to the upper end of the first sleeve 51 or the lower end of the second sleeve 52.

[0043] The gasket 531 and the hoop 532 are an integral rubber structure, such as Figure 3 As shown, the clamp 532 is elastically clamped at the upper end of the first sleeve 51. Compared with Embodiment 1, there is no need to use adhesives or other chemical substances, thus avoiding accidental contamination of the asphalt mixture by adhesives or other chemical substances. The clamp 532 is elastically clamped to the first sleeve 51, which not only ensures a stable connection but also facilitates disassembly and replacement after the rubber pad 53 is severely worn.

[0044] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic demolding machine for asphalt mixture testing, comprising a machine body, wherein a lifting mechanism is provided within the machine body, the lifting mechanism is connected to a lifting rod, and the top of the machine body is provided with a lower support plate and an upper top plate arranged sequentially from bottom to top, the lower support plate having a first through hole for the lifting rod to pass through, and the upper top plate having a second through hole; characterized in that, It also includes a sleeve assembly disposed between the lower support plate and the upper top plate. The sleeve assembly includes a first sleeve, a second sleeve, and a rubber pad. The first sleeve and the second sleeve are vertically coaxially connected. The rubber pad is disposed between the first sleeve and the second sleeve. The lower end of the first sleeve forms a compression fit with the top of the lower support plate, and the upper end of the second sleeve forms a compression fit with the bottom of the upper top plate.

2. The hydraulic demolding machine for asphalt mixture testing according to claim 1, characterized in that, Both the first sleeve and the second sleeve are metal cylindrical structures.

3. The hydraulic demolding machine for asphalt mixture testing according to claim 1, characterized in that, The first sleeve and the second sleeve are transparent cylindrical structures.

4. The hydraulic demolding machine for asphalt mixture testing according to claim 1, characterized in that, The rubber pad has a ring-shaped structure.

5. The hydraulic demolding machine for asphalt mixture testing according to claim 4, characterized in that, The rubber pad is adhered to the upper end of the first sleeve or the lower end of the second sleeve.

6. The hydraulic demolding machine for asphalt mixture testing according to claim 1, characterized in that, The rubber pad includes an annular gasket, and a cylindrical hoop is connected to the outer ring of the gasket. The cross-section of the hoop and the gasket are L-shaped. The hoop is elastically clamped to the upper end of the first sleeve or the lower end of the second sleeve.

7. The hydraulic demolding machine for asphalt mixture testing according to claim 1, characterized in that, The machine body is provided with at least two vertically arranged uprights, and the lower support plate and the upper top plate are arranged on the uprights.

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