Concrete contraction device

Abstract

The utility model belongs to the field of concrete detection, and particularly relates to a concrete contraction device which comprises a bottom plate, a fixing plate is fixedly mounted on the left side of the top of the bottom plate, a transverse groove is formed in the right side of the top of the bottom plate, vertical grooves are formed in the left side and the right side of the top of the bottom plate, and a positioning groove is formed in the middle of the top of the bottom plate; and the fixing assembly is installed on the bottom plate, and the fixing assembly comprises a first fixing base, a second fixing base, a spring, a push block, a vertical plate and the like. The device is reasonable in design, can position and support a concrete test block by sliding up and down, is simple to operate and quick to use, reduces the time required by operation, enables the fixing process to be faster, improves the test speed and the test efficiency, can adjust the movement of the dial indicator through a worm and gear structure, has a self-locking function, and is convenient to use. No external component is needed for locking, the transmission ratio can be reduced, accurate adjustment is facilitated, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete detection, in particular to a concrete shrinkage device. Background Art

[0002] Concrete is a material that must be used in the current construction industry. When the natural environment changes, concrete will expand and shrink, and the expansion and contraction of concrete will cause cracks in the wall. Therefore, it is necessary to use a concrete shrinkage test device in the laboratory to test the expansion and contraction of concrete test blocks.

[0003] Announcement No. CN213843272U discloses a concrete shrinkage test device, including a base, a support bar arranged on the base for supporting a concrete test block, and a first support plate and a second support plate vertically arranged at both ends of the base. The support bar is arranged perpendicular to the length direction of the concrete test block. It is characterized in that: a limit plate arranged perpendicular to the base is added to the base, the limit plate is located between the first support plate and the second support plate, and a first slider is provided at one end of the limit plate close to the base. A first slide groove parallel to the support bar is provided on the base, and the first slider is inserted into the first slide groove, and the first slider is slidably matched with the first slide groove. The limit plate is slidably matched with the base. A first driving component for driving the first slider to move along the first slide groove is provided in the first slide groove;

[0004] As mentioned in the comparative document, this type of shrinkage device can realize the positioning of the concrete test block and the self-locking of the position of the micrometer, and the measurement effect is good. However, when adjusting the position of the fixed block and the micrometer, the screw thread is used for adjustment. The operation time is long and the fixing process is slow, which may reduce the test speed and efficiency. The operation is not fast enough. Therefore, we proposed a concrete shrinkage device. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a concrete shrinkage device.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] Concrete shrinkage device, comprising:

[0008] A bottom plate, a fixing plate is fixedly installed on the left side of the top of the bottom plate, a horizontal groove is opened on the right side of the top of the bottom plate, vertical grooves are opened on the left and right sides of the top of the bottom plate, and a positioning groove is opened in the middle of the top of the bottom plate;

[0009] A fixing component is installed on the bottom plate.

[0010] Preferably, the fixing assembly includes a first fixing seat, a second fixing seat, a worm, a lead screw, a worm wheel, a slider, a stop plate, a push plate, a shift block, a spring, a push block, a connecting rod, a locking plate, a connecting rod and a vertical plate, the first fixing seat is fixedly mounted on the front and rear sides of the bottom of the base plate, the second fixing seat is fixedly mounted on the left and right sides of the bottom of the base plate, the worm is rotatably mounted between the inner sides of the first fixing seat, the lead screw is rotatably mounted between the inner sides of the second fixing seat, the worm wheel is fixedly mounted on the outer side of the lead screw, the worm wheel is meshed with the worm, the slider is threadedly connected to the outer side of the lead screw, and the The slider is slidably installed on the inner side of the horizontal groove, the abutment plate is fixedly installed on the top of the slider, the push plate is slidably installed on the inner side of the vertical groove, the moving block is slidably installed on the inner side of the positioning groove, one end of the spring is fixedly installed on one side of the positioning groove, one end of the spring is fixedly installed on one side of the moving block, the pushing block is slidably installed on the vertical plate, the vertical plate is fixedly installed on the top rear side of the bottom plate, one end of the connecting rod is rotatably installed on one side of the pushing block, one end of the connecting rod is rotatably installed on the top of the moving block, the locking plate is fixedly installed on the rear side of the pushing block, and the connecting rod is fixedly installed between adjacent surfaces of the pushing plate.

[0011] Preferably, a dial gauge is provided on one side of the abutment plate, a measuring rod is provided on the dial gauge, and the measuring rod is located on the other side of the abutment plate.

[0012] Preferably, a through hole is opened on one side of the shift block, and the connecting rod is fixedly installed on the inner side of the through hole.

[0013] Preferably, a slide groove is provided on the front side of the vertical plate, and the push block is slidably installed on the inner side of the slide groove.

[0014] Preferably, threaded holes are provided on the left and right sides of one side of the locking plate, and locking members are threadedly connected to the inner sides of the threaded holes.

[0015] Preferably, support blocks are provided at the four bottom corners of the bottom plate, and the lowest point of the support blocks is lower than the lowest point of the first fixing seat.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] (1) The concrete shrinkage device of the utility model can realize the positioning and support of the concrete test block by sliding up and down. It is simple to operate and quick to use, which reduces the time required for operation, makes the fixing process faster, and improves the test speed and test efficiency accordingly.

[0018] (2) The concrete shrinkage device of the utility model can adjust the movement of the micrometer through the worm gear structure. At the same time, it has a self-locking function, does not need to use external components for locking, and can reduce the transmission ratio, which is conducive to precise adjustment and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the concrete shrinkage device proposed by the utility model;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of the concrete shrinkage device proposed by the utility model from another perspective;

[0021] Figure 3 This is a three-dimensional structural schematic diagram of the concrete shrinkage device proposed by the utility model from another perspective;

[0022] Figure 4 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0023] Figure 5 for Figure 2 A schematic diagram of the enlarged structure of part B in FIG.

[0024] Figure 6 for Figure 3 Schematic diagram of the enlarged structure of part C in the figure.

[0025] In the figure: 1, bottom plate; 2, fixed plate; 3, horizontal groove; 4, vertical groove; 5, positioning groove; 6, first fixed seat; 7, second fixed seat; 8, worm; 9, lead screw; 10, worm wheel; 11, slider; 12, abutment plate; 13, push plate; 14, shift block; 15, spring; 16, push block; 17, connecting rod; 18, locking plate; 19, connecting rod; 20, vertical plate. DETAILED DESCRIPTION

[0026] Example

[0027] Reference Figure 1-6 The concrete shrinkage device includes a bottom plate 1, a fixed plate 2 is fixedly installed on the left side of the top of the bottom plate 1, a transverse groove 3 is opened on the right side of the top of the bottom plate 1, and the transverse groove 3 is used to guide the sliding block 11, vertical grooves 4 are opened on the left and right sides of the top of the bottom plate 1, and the vertical grooves 4 are used to guide the push plate 13, and a positioning groove 5 is opened in the middle of the top of the bottom plate 1, and the positioning groove 5 is used to guide the moving block 14; a fixing component, the fixing component is installed on the bottom plate 1.

[0028] In this embodiment, the first fixed seat 6 is fixedly mounted on the front and rear sides of the bottom of the bottom plate 1, the second fixed seat 7 is fixedly mounted on the left and right sides of the bottom of the bottom plate 1, the worm 8 is rotatably mounted between the inner sides of the first fixed seat 6, the screw 9 is rotatably mounted between the inner sides of the second fixed seat 7, the worm gear 10 is fixedly mounted on the outer side of the screw 9, the worm gear 10 is meshed with the worm 8, the slider 11 is threadedly connected to the outer side of the screw 9, the slider 11 is slidably mounted on the inner side of the horizontal groove 3, the abutment plate 12 is fixedly mounted on the top of the slider 11, the push plate 13 is slidably mounted on the inner side of the vertical groove 4, the shift block 14 is slidably mounted on the inner side of the positioning groove 5, and one end of the spring 15 is fixedly mounted on the positioning groove 5 One side of the push block 16, one end of the spring 15 is fixedly mounted on one side of the shift block 14, the spring 15 has a forward pulling force on the shift block 14 to reduce the resistance required when the locking plate 18 needs to be pressed down, the push block 16 is slidably mounted on the vertical plate 20, the vertical plate 20 is fixedly mounted on the top rear side of the bottom plate 1, one end of the connecting rod 17 is rotatably mounted on one side of the push block 16, and one end of the connecting rod 17 is rotatably mounted on the top of the shift block 14, the connecting rod 17 is convenient for adjusting the position of the shift block 14 by changing the angle, the locking plate 18 is fixedly mounted on the rear side of the push block 16, the connecting rod 19 is fixedly mounted between the adjacent surfaces of the push plate 13, and the connecting rod 19 can enable the shift block 14 to drive the push plates 13 on both sides to move at the same time.

[0029] In this embodiment, a micrometer is provided on one side of the abutment plate 12 , and a measuring rod is provided on the micrometer. The measuring rod is located on the other side of the abutment plate 12 . The micrometer is used to measure the deformation of the concrete test block.

[0030] In this embodiment, a through hole is opened on one side of the shift block 14, and the connecting rod 19 is fixedly installed on the inner side of the through hole, and the through hole is used for the connecting rod 19 to pass through.

[0031] In this embodiment, a slide groove is provided on the front side of the vertical plate 20 , and the push block 16 is slidably installed on the inner side of the slide groove. The slide groove is used to limit and guide the push block 16 .

[0032] In this embodiment, threaded holes are provided on the left and right sides of one side of the locking plate 18 , and locking members are threadedly connected to the inner sides of the threaded holes. The locking members are used to adjust the sliding resistance of the locking plate 18 .

[0033] In this embodiment, support blocks are provided at the four corners of the bottom of the base plate 1 , the lowest point of the support blocks is lower than the lowest point of the first fixing seat 6 , and the support blocks are used to support the device.

[0034] Through the above structure, the concrete shrinkage device provided by the utility model can realize the positioning and support of the concrete test block by sliding up and down. The operation is simple and quick to use, and the time required for operation is reduced, so that the fixing process is faster, and the test speed and test efficiency are also improved accordingly. The movement of the micrometer can be adjusted by the worm gear 10 and worm 8 structure. At the same time, it has a self-locking function, and there is no need to use an external component to lock it. The transmission ratio can be reduced, which is conducive to precise adjustment and easy to use. The specific operation is that when the concrete test block needs to be positioned, the locking plate 18 is pushed downward to make it move downward through the push block 16, thereby driving the connecting rod 17 to change the angle, so that the moving block 14 squeezes the spring 15 forward and drives the push plates 13 on both sides to move through the connecting rod 19 until the concrete test block is resisted and pushed to a suitable position. After that, the rotating worm 8 drives the screw 9 to rotate through its meshing with the worm gear 10, and the slider 11 drives the resisting plate 12 to move through the threaded cooperation until one side contacts the concrete test block, completing a measurement and adjustment process.

Claims

1. Concrete shrinkage device, characterized in that, include: A bottom plate (1), a fixing plate (2) is fixedly installed on the left side of the top of the bottom plate (1), a horizontal groove (3) is opened on the right side of the top of the bottom plate (1), vertical grooves (4) are opened on the left and right sides of the top of the bottom plate (1), and a positioning groove (5) is opened in the middle of the top of the bottom plate (1); A fixing assembly, wherein the fixing assembly is installed on a base plate (1), and the fixing assembly comprises a first fixing seat (6), a second fixing seat (7), a worm (8), a screw (9), a worm wheel (10), a slider (11), a resisting plate (12), a pushing plate (13), a shifting block (14), a spring (15), a pushing block (16), a connecting rod (17), a locking plate (18), a connecting rod (19) and a vertical plate (20), wherein the first fixing seat (6) is fixedly installed on the front and rear sides of the bottom of the base plate (1), and the second fixing seat (7) is fixedly installed on the left and right sides of the bottom of the base plate (1), wherein the worm (8) is rotatably installed between the inner sides of the first fixing seat (6), and the screw (9) is rotatably installed between the inner sides of the second fixing seat (7), and the worm wheel (10) is fixedly installed on the outer side of the screw (9), and the worm wheel (10) is meshed with the worm (8), and the slider (11) is threadedly connected The sliding block (11) is connected to the outer side of the screw rod (9), and the sliding block (11) is slidably mounted on the inner side of the transverse groove (3). The abutment plate (12) is fixedly mounted on the top of the sliding block (11). The push plate (13) is slidably mounted on the inner side of the vertical groove (4). The moving block (14) is slidably mounted on the inner side of the positioning groove (5). One end of the spring (15) is fixedly mounted on one side of the positioning groove (5). One end of the spring (15) is fixedly mounted on one side of the moving block (14). The pushing block (16) is slidably mounted on the vertical plate (20). The vertical plate (20) is fixedly mounted on the top rear side of the bottom plate (1). One end of the connecting rod (17) is rotatably mounted on one side of the pushing block (16). One end of the connecting rod (17) is rotatably mounted on the top of the moving block (14). The locking plate (18) is fixedly mounted on the rear side of the pushing block (16). The connecting rod (19) is fixedly mounted between adjacent surfaces of the pushing plate (13).

2. The concrete shrinkage device according to claim 1, characterized in that: A dial gauge is provided on one side of the abutment plate (12), and a measuring rod is provided on the dial gauge, and the measuring rod is located on the other side of the abutment plate (12).

3. The concrete shrinkage device according to claim 2, characterized in that: A through hole is provided on one side of the shift block (14), and the connecting rod (19) is fixedly mounted on the inner side of the through hole.

4. The concrete shrinkage device according to claim 3, characterized in that: A sliding groove is provided on the front side of the vertical plate (20), and the push block (16) is slidably mounted on the inner side of the sliding groove.

5. The concrete shrinkage device according to claim 4, characterized in that: Threaded holes are provided on the left and right sides of one side of the locking plate (18), and locking pieces are threadedly connected to the inner sides of the threaded holes.

6. The concrete shrinkage device according to claim 1, characterized in that: Support blocks are provided at the four corners of the bottom of the base plate (1), and the lowest point of the support blocks is lower than the lowest point of the first fixing seat (6).

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