Mortar shrinkage test piece forming device and system

Abstract

The utility model discloses a mortar shrinkage test piece forming device and system, and relates to the field of test sample preparation. The mortar shrinkage rate test piece forming device comprises a cement mortar test mold body and a plurality of shrinkage heads, the cement mortar test mold body comprises a bottom plate, a front baffle, a rear baffle, a left baffle, a right baffle and a plurality of partition plates, and the bottom plate, the front baffle, the rear baffle, the left baffle, the right baffle and the partition plates define a plurality of mold cavities; the side walls of the adjacent sides of the front baffle and the rear baffle are each provided with a plurality of positioning holes used for clamping the shrinkage head, the shrinkage head is composed of a spherical shrinkage front section, a cylindrical shrinkage middle section and a circular-truncated-cone-shaped shrinkage rear section which are sequentially connected, and the shrinkage front section and the shrinkage middle section are used for being clamped into the positioning holes. The mortar shrinkage test piece forming device and the mortar shrinkage test piece forming system can ensure that the shrinkage rear section is stably embedded in mortar when the shrinkage front section and the shrinkage middle section are accurately clamped in the center in the positioning hole, the embedding position and depth of the shrinkage head in the mortar shrinkage test piece can be accurately regulated and controlled, and the mortar shrinkage test precision is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of test sample preparation, in particular to a mortar shrinkage test piece forming device and system. BACKGROUND

[0002] As an important material, mortar products are widely used in the fields of construction, municipal administration, railway, etc. In order to ensure the quality of mortar products, the performance of mortar products needs to be detected. Shrinkage performance, as an important performance index of mortar, reflects the size change trend of mortar in the long-term process, and has an important influence on the anti-cracking performance of hardened mortar.

[0003] The test of mortar shrinkage performance needs to go through the forming, curing and testing of shrinkage test pieces. In the forming process of shrinkage test pieces, a plurality of shrinkage heads need to be installed in the mortar shrinkage test mold and poured with mortar. After the mortar is poured into the test mold, it needs to be inserted and vibrated, so that the mortar in the test mold is vibrated uniformly to obtain the shrinkage test piece. This process is easy to cause the displacement or falling of the shrinkage head, and it is difficult to meet the requirement of the depth of the shrinkage head embedded in the mortar specified in the industry standard, which will also affect the test result of the shrinkage rate. CONTENT OF THE UTILITY MODEL

[0004] The purpose of the present application is to provide a mortar shrinkage test piece forming device and system which can ensure that the shrinkage front segment and the shrinkage middle segment are accurately clamped in the center of the positioning hole, so that the shrinkage rear segment is stably embedded in the mortar, and can accurately control the embedded position and depth of the shrinkage head in the mortar shrinkage test piece and improve the accuracy of the mortar shrinkage test.

[0005] The present application is implemented as follows:

[0006] The present application provides a mortar shrinkage test piece forming device, which comprises a cement mortar test mold body and a plurality of shrinkage heads. The cement mortar test mold body comprises a bottom plate, a front baffle, a rear baffle, a left baffle, a right baffle and a plurality of partition plates. The bottom plate, the front baffle, the rear baffle, the left baffle, the right baffle and the partition plates enclose a plurality of mold cavities. The side walls of the front baffle and the rear baffle adjacent to each other are respectively provided with a plurality of positioning holes for clamping the shrinkage head. The shrinkage head is composed of a spherical shrinkage front segment, a cylindrical shrinkage middle segment and a circular truncated cone-shaped shrinkage rear segment connected in sequence. The shrinkage front segment and the shrinkage middle segment are used for clamping in the positioning hole.

[0007] In some optional embodiments, the shrinkage front segment and the shrinkage middle segment are connected by a circular truncated cone-shaped connecting segment, and the diameter of the connecting segment gradually decreases away from the shrinkage middle segment.

[0008] In some optional embodiments, the outer wall of the shrinkage middle segment is sleeved with a fixed rubber ring.

[0009] In some optional embodiments, the inner wall of the positioning hole at the end away from the mold cavity is a smooth surface, and the inner wall of the positioning hole at the end close to the mold cavity is a rough surface with friction lines.

[0010] In some optional embodiments, the bottom wall of the positioning hole is provided with a clamping groove, and the front shrinkage section is provided with a clamping column corresponding to the clamping groove.

[0011] In some optional embodiments, a plurality of buffer rubber rings are further arranged on the connecting section, and the buffer rubber rings are provided with circular truncated cone-shaped through holes matched with the connecting section.

[0012] In some optional embodiments, a locking bolt corresponding to the positioning hole is further arranged, a locking hole corresponding to the locking bolt is arranged on the front shrinkage section, and the locking bolt is configured to move axially through the locking hole on the front shrinkage section after passing through the front baffle or the rear baffle.

[0013] The application further provides a mortar shrinkage test piece forming system, which comprises the mortar shrinkage test piece forming device and a movable base for supporting the mortar shrinkage test piece forming device.

[0014] The application has the following beneficial effects: the mortar shrinkage test piece forming device comprises a cement mortar test mold body and a plurality of shrinkage heads, the cement mortar test mold body comprises a bottom plate, a front baffle, a rear baffle, a left baffle, a right baffle and a plurality of partition plates, the bottom plate, the front baffle, the rear baffle, the left baffle, the right baffle and the partition plates form a plurality of mold cavities, the side walls of the front baffle and the rear baffle adjacent to each other are respectively provided with a plurality of positioning holes for clamping the shrinkage heads, the shrinkage head is composed of a spherical front shrinkage section, a cylindrical middle shrinkage section and a circular truncated cone-shaped rear shrinkage section connected in sequence, and the front shrinkage section and the middle shrinkage section are used for clamping in the positioning hole. The mortar shrinkage test piece forming device and system provided by the application are composed of a spherical front shrinkage section, a cylindrical middle shrinkage section and a circular truncated cone-shaped rear shrinkage section connected in sequence, which can ensure that the front shrinkage section and the middle shrinkage section are accurately clamped in the center of the positioning hole, and at the same time, the rear shrinkage section is stably embedded in the mortar, the embedded position and depth of the shrinkage head in the mortar shrinkage test piece can be accurately controlled, and the accuracy of the mortar shrinkage test is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0016] Figure 1The partial sectional view structure schematic diagram of the shrink head of the mortar shrinkage test piece forming device provided for the embodiment 1 of the application;

[0017] Figure 2 The partial sectional view structure schematic diagram of the mortar shrinkage test piece forming device provided for the embodiment 1 of the application;

[0018] Figure 3 The partial sectional view structure schematic diagram of the shrink head of the mortar shrinkage test piece forming device provided for the embodiment 1 of the application;

[0019] Figure 4 The partial sectional view structure schematic diagram of the shrink head of the mortar shrinkage test piece forming device provided for the embodiment 1 of the application;

[0020] Figure 5 The partial sectional view structure schematic diagram of the shrink head of the mortar shrinkage test piece forming device provided for the embodiment 1 of the application;

[0021] In the figure: 100, base plate; 110, front baffle; 120, rear baffle; 130, left baffle; 140, right baffle; 150, partition plate; 160, mold cavity; 170, positioning hole; 180, rough surface; 190, clamping groove; 200, shrink head; 210, front section of shrink head; 211, clamping column; 220, middle section of shrink head; 230, rear section of shrink head; 240, connecting section; 250, fixed rubber ring; 260, locking bolt; 270, locking hole; 280, buffer rubber ring; 290, perforation; 300, moving seat; 310, wheel. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the application more clear, the technical scheme of the embodiments of the application will be described clearly and completely below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, rather than all the embodiments of the application. The components of the embodiments of the application described and shown in the drawings can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of the application.

[0024] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0025] In the description of the application, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0026] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0027] In the description of the application, it also needs to be explained that unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0028] In the present application, unless otherwise explicitly specified and limited, the first feature "above" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only means that the horizontal height of the first feature is less than that of the second feature.

[0029] The features and performance of the mortar shrinkage test specimen forming device and system of the application are further described in detail below in conjunction with the embodiments.

[0030] Embodiment 1

[0031] As Figure 1 , Figure 2 and Figure 3As shown, the embodiment of the present application provides a mortar shrinkage test piece forming device, which comprises a cement mortar test mold body and six shrinkage heads 200. The cement mortar test mold body comprises a bottom plate 100, a front baffle 110 connected to one end of the top of the bottom plate 100, a rear baffle 120 connected to the other end of the top of the bottom plate 100, a left baffle 130 connected to one end of the front baffle 110 and the rear baffle 120 respectively, a right baffle 140 connected to the other end of the front baffle 110 and the rear baffle 120 respectively, and two partition plates 150 connected to the front baffle 110 and the rear baffle 120 respectively. The bottom plate 100, the front baffle 110, the rear baffle 120, the left baffle 130, the right baffle 140 and the partition plate 150 form three mold cavities 160. The side wall adjacent to the front baffle 110 and the rear baffle 120 is respectively provided with three positioning holes 170 for clamping the shrinkage head 200. The inner wall of one end of each positioning hole 170 away from the mold cavity 160 is a smooth surface, and the inner wall of one end of each positioning hole 170 close to the mold cavity 160 is a rough surface 180 with friction lines.

[0032] The shrinkage head 200 is composed of a spherical shrinkage front section 210, a cylindrical shrinkage middle section 220 and a circular truncated cone-shaped shrinkage rear section 230 connected in sequence. The shrinkage front section 210 and the shrinkage middle section 220 are used for clamping in the positioning hole 170. The shrinkage front section 210 and the shrinkage middle section 220 are connected by a circular truncated cone-shaped connecting section 240, and the diameter of the connecting section 240 gradually decreases away from the shrinkage middle section 220. The outer wall of the shrinkage middle section 220 is sleeved with a ring-shaped fixed silica gel ring 250.

[0033] The mortar shrinkage test piece forming device provided by the embodiment of the present application forms three mold cavities 160 by connecting the front baffle 110, the rear baffle 120, the left baffle 130, the right baffle 140 and the two partition plates 150 on the bottom plate 100, and is respectively provided with three positioning holes 170 for clamping the shrinkage head 200 on the side wall adjacent to the front baffle 110 and the rear baffle 120. When the mortar shrinkage test piece is processed, the fixed silica gel ring 250 is first fixedly sleeved on the outer wall of the shrinkage middle section 220 of the shrinkage head 200, and then the shrinkage front section 210 and the shrinkage middle section 220 sleeved with the fixed silica gel ring 250 are inserted into the positioning hole 170 for clamping and fixing. The fixed silica gel ring 250 on the outer wall of the shrinkage middle section 220 is pressed and clamped on the rough surface 180 with friction lines on the inner wall of one end of the positioning hole 170 close to the mold cavity 160, and the shrinkage rear section 230 of the shrinkage head 200 extends into the mold cavity 160. Then the mortar can be poured into the mold cavity 160 and inserted, vibrated and compacted, and the surface is scraped flat. After the mortar solidifies, the mortar shrinkage test piece can be taken out.

[0034] The mortar shrinkage test piece forming device provided by the embodiment of the application is capable of precisely positioning the center in the positioning hole 170 by using the spherical shrinkage front section 210, stably clamping the cylindrical shrinkage middle section 220 to the inner wall of the positioning hole 170, and tightly embedding the circular truncated cone-shaped shrinkage rear section 230 in the mortar and increasing the contact area with the mortar to improve the connection stability, and stably pressing and clamping the rough surface 180 with the friction lines on the inner wall of the end of the positioning hole 170 close to the mold cavity 160 by using the fixed rubber ring 250 on the outer wall of the shrinkage middle section 220, thereby improving the stability of the connection between the shrinkage head 200 and the positioning hole 170, precisely regulating the embedding position and depth of the shrinkage head 200 in the mortar shrinkage test piece, and avoiding the influence of the offset and loosening of the shrinkage head 200 in the inserting and vibrating process on the quality of the prepared mortar shrinkage test piece.

[0035] The connection section 240 between the shrinkage front section 210 and the shrinkage middle section 220 and the connection section 240 between the shrinkage middle section 220 and the shrinkage rear section 230 are circular truncated cone-shaped, and the diameter of the connection section 240 gradually decreases away from the shrinkage middle section 220, thereby ensuring the stable connection of the shrinkage front section 210, the shrinkage middle section 220 and the shrinkage rear section 230.

[0036] The outer wall of the shrinkage middle section 220 is sleeved with the annular fixed rubber ring 250 made of silica gel, which has good deformation ability and can be tightly fitted to the outer wall of the shrinkage middle section 220 of the shrinkage head 200 and tightly connected with the rough surface 180 with the friction lines on the inner wall of the end of the positioning hole 170 close to the mold cavity 160.

[0037] In other optional embodiments, the number of the partition plates 150 can also be three or more than three, and the number of the mold cavities 160 can also be four or more than four; and the number of the positioning holes 170 can also be four or more than four.

[0038] Embodiment 2

[0039] As Figure 4 and Figure 5As shown, the embodiment of the present application also provides a mortar shrinkage test piece forming system, which comprises the mortar shrinkage test piece forming device provided in the above embodiment 1 and a moving base 300 for supporting the mortar shrinkage test piece forming device, the moving base 300 is connected with four rotatable wheels 310, in addition, the bottom wall of the positioning hole 170 in the mortar shrinkage test piece forming device provided in the embodiment is provided with a clamping groove 190, and the shrinkage front section 210 is provided with a clamping column 211 which is clamped in correspondence with the clamping groove 190. The mortar shrinkage test piece forming device further comprises six buffer rubber rings 280 which are sleeved on the connecting section 240 and six locking bolts 260 which correspond to the positioning hole 170 one by one; the buffer rubber ring 280 is cylindrical and is provided with a circular truncated cone-shaped through hole 290 which cooperates with the connecting section 240; the shrinkage front section 210 is provided with a locking hole 270 which is connected in correspondence with the locking bolt 260, and the locking bolt 260 is configured to move axially through the front baffle 110 or the rear baffle 120 and then pass through or come out of the locking hole 270 in the shrinkage front section 210 in the positioning hole 170 when rotating.

[0040] The mortar shrinkage test piece forming system provided in the embodiment of the present application can conveniently move the prepared mortar shrinkage test piece by arranging the moving base 300 with the wheels 310 to support the mortar shrinkage test piece forming device to move; at the same time, by arranging the clamping groove 190 in the bottom wall of the positioning hole 170 and the clamping column 211 which is clamped in correspondence with the clamping groove 190 in the spherical shrinkage front section 210, the clamping column 211 in the shrinkage front section 210 of the shrinkage head 200 can be clamped into the clamping groove 190 in the bottom wall of the positioning hole 170 when the shrinkage head 200 is inserted into the positioning hole 170 for clamping and fixing, so as to ensure that the shrinkage head 200 and the positioning hole 170 are stably positioned and tightly connected together.

[0041] In addition, the mortar shrinkage test piece forming device further comprises six buffer rubber rings 280 which are respectively sleeved on the connecting section 240 between the shrinkage front section 210 and the shrinkage middle section 220, by sleeving the cylindrical buffer rubber ring 280 on the outer wall of the circular truncated cone-shaped connecting section 240 between the shrinkage front section 210 and the shrinkage middle section 220, the connecting section 240 can be wrapped and protected by the buffer rubber ring 280, and the buffer rubber ring 280 can be stably pressed against the inner wall of the positioning hole 170, so as to improve the connection stability between the connecting section 240 between the shrinkage front section 210 and the shrinkage middle section 220 and the positioning hole 170.

[0042] The mortar shrinkage test piece forming device is provided with six locking bolts 260 corresponding to the positioning holes 170, the shrinkage front section 210 is provided with locking holes 270 corresponding to the locking bolts 260, when the shrinkage head 200 is inserted into the positioning holes 170 for clamping and fixing, the locking bolts 260 can be inserted into the front baffle 110 or the rear baffle 120 and then rotated, so that the locking bolts 260 move along the axial direction and pass through the front baffle 110 or the rear baffle 120 and then pass through the locking holes 270 in the shrinkage front section 210 in the positioning holes 170, the position of the shrinkage front section 210 and the positioning holes 170 is locked, so that the quality of the mortar shrinkage test piece prepared is not affected by the deviation and loosening of the shrinkage head 200 in the inserting and vibrating process, when the mortar shrinkage test piece is prepared, the locking bolts 260 are reversely rotated to move along the axial direction and are separated from the shrinkage front section 210 in the positioning holes 170, and then the front baffle 110 or the rear baffle 120 is separated, so that the mortar shrinkage test piece can be taken down.

[0043] The embodiments described above are part of the embodiments of the present application, rather than all the embodiments. The detailed description of the embodiments of the present application is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

Claims

1. A mortar shrinkage test piece forming device, comprising a cement mortar test mold body and a plurality of shrinkage heads, the cement mortar test mold body comprising a bottom plate, a front baffle, a rear baffle, a left baffle, a right baffle and a plurality of partition plates, the bottom plate, the front baffle, the rear baffle, the left baffle, the right baffle and the partition plates enclosing a plurality of mold cavities, and a plurality of positioning holes for clamping the shrinkage heads are arranged on the side walls adjacent to the front baffle and the rear baffle, respectively, characterized in that, The shrink head is composed of a spherical front shrink section, a cylindrical middle shrink section and a circular truncated cone rear shrink section connected in sequence, and the front shrink section and the middle shrink section are used for clamping in the positioning hole.

2. The apparatus of claim 1, wherein, The front shrink section and the middle shrink section are connected by a circular truncated cone connecting section, and the diameter of the connecting section gradually decreases away from the middle shrink section.

3. The apparatus of claim 1, wherein: An outer wall of the middle shrink section is sleeved with a fixed rubber ring.

4. The apparatus of claim 1, wherein, An inner wall of an end of the positioning hole away from the mold cavity is a smooth surface, and an inner wall of an end of the positioning hole close to the mold cavity is a rough surface with friction lines.

5. The apparatus of claim 1, wherein, A bottom wall of the positioning hole is provided with a clamping groove, and the front shrink section is provided with a clamping column corresponding to the clamping groove.

6. The apparatus of claim 2, wherein, A plurality of buffer rubber rings are further sleeved on the connecting section, and the buffer rubber ring is provided with a circular truncated cone through hole matched with the connecting section.

7. The apparatus of claim 1, wherein, A locking bolt corresponding to the positioning hole is further included, a locking hole corresponding to the locking bolt is formed on the front shrink section, and the locking bolt is configured to move axially through the front baffle or the rear baffle and then pass through or come out of the locking hole on the front shrink section in the positioning hole when rotating.

8. A system for molding a mortar shrinkage test specimen, comprising: It comprises the mortar shrinkage test piece forming device and the movable seat for supporting the mortar shrinkage test piece forming device, and the movable seat is connected with a plurality of rotatable wheels.

Images