Concrete expansion and shrinkage measuring device

Abstract

The utility model discloses a concrete expansion and shrinkage measuring device, which relates to the technical field of concrete and comprises an upper shell and a lower shell, a first connecting plate is fixedly arranged on the lower end face of the upper shell, and a plurality of first through holes which are uniformly arranged are formed in the surface of the first connecting plate. A second connecting plate is arranged on the upper end face of the lower shell, a plurality of evenly-arranged second through holes are formed in the surface of the second connecting plate, reinforcing blocks are arranged on the four end faces outside the first connecting plate and the second connecting plate, and clamping grooves are formed in the reinforcing blocks; the first connecting plate and the second connecting plate are clamped into the clamping grooves, inserting grooves are formed in the two ends of the reinforcing block, inserting rods are connected into the inserting grooves in a penetrating mode, and the inserting rods are connected with the first connecting plate and the second connecting plate in a penetrating mode through first through holes and second through holes correspondingly. The sealing type of the measuring device is enhanced, so that the accuracy of detection data is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete, in particular to a concrete expansion and contraction measuring device. Background Art

[0002] Concrete is an indispensable building material in contemporary architecture. The quality of concrete directly determines the quality of the construction project. Therefore, it is necessary to measure it before pouring the concrete, including measuring the expansion and contraction of the concrete, and special measuring devices are required for measurement.

[0003] For example, patent number CN202021520182.2 discloses a concrete expansion and contraction measuring device, which includes a measuring bottom shell, a connecting pipe fixedly connected at the central axis position of the outer surface of the bottom end of the measuring bottom shell, one end of the connecting pipe fixedly connected to a first transparent measuring tube, a first rubber membrane provided at the upper end opening of the measuring bottom shell, water is contained in the interior of the measuring bottom shell, a measuring upper shell is provided above the measuring bottom shell, a second transparent measuring tube is fixedly connected to the outer surface of the upper end of the measuring upper shell, and a second rubber membrane is provided at the lower end opening of the measuring upper shell. The utility model can place the concrete to be measured on the first rubber membrane through the arrangement of the measuring bottom shell, the measuring upper shell, the first rubber membrane, the second rubber membrane, the connecting pipe, the first transparent measuring tube, the second transparent measuring tube, the exhaust pipe, the air guide hose, and the vacuum pump, and then cover the measuring upper shell, wrap the second rubber membrane above the concrete to be measured, and then use the vacuum pump to extract the air inside. At this time, the concrete inside can be subjected to squeezing forces in different directions, and the shrinkage of the concrete can be detected to the maximum extent;

[0004] The measuring device in this patent has a poor sealing effect, which affects the data of the expansion and contraction measurement of concrete and affects the accuracy of subsequent measurement data. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a concrete expansion and contraction measuring device, which solves the problem that the sealing effect of the measuring device is poor, the poor sealing affects the expansion and contraction measurement data of the concrete, and affects the accuracy of subsequent measurement data.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a concrete expansion and contraction measuring device, comprising an upper shell and a lower shell, wherein the lower end surface of the upper shell is fixedly provided with a first connecting plate, the surface of the first connecting plate is provided with a plurality of evenly arranged first through holes, the upper end surface of the lower shell is provided with a second connecting plate, the surface of the second connecting plate is provided with a plurality of evenly arranged second through holes, the four end surfaces of the first connecting plate and the second connecting plate are provided with reinforcing blocks, the interior of the reinforcing blocks is provided with a snap-fitting groove, the first connecting plate and the second connecting plate are snapped into the snap-fitting groove, the reinforcing Slots are provided inside both ends of the block, and a plug rod is connected to the inside of the slot. The plug rod is connected to the first connecting plate and the second connecting plate through the first through hole and the second through hole respectively. Movable grooves are provided at the upper and lower ends of the plug rod, and a guide rod is provided inside the movable groove. U-shaped plug rods are provided on the left and right sides of the movable groove, and a spring is provided between the two U-shaped plug rods. The lower end surfaces of the two U-shaped plug rods are provided with guide blocks that are slidably sleeved on the outside of the guide rod. Fixed grooves are provided on the left and right sides of the reinforcement block, and the two U-shaped plug rods are inserted into the two fixed grooves.

[0007] Preferably, a sealing ring is provided inside the first connecting plate, and a sealing groove is provided at the upper end of the interior of the lower shell, and the sealing ring is inserted into the sealing groove.

[0008] Preferably, a clamping block is fixedly provided on the lower end surface of the two U-shaped insertion rods, and a clamping groove is provided on both sides of the interior of the reinforcement block, and the clamping block is clamped into the clamping groove.

[0009] Preferably, an arc-shaped groove is provided on one side of the inside of the two U-shaped insertion rods, and an anti-slip rubber pad is provided inside the arc-shaped groove.

[0010] Preferably, a measuring tube is connected to the lower end surface of the lower shell, and a connecting tube is connected between the measuring tube and the lower shell.

[0011] Preferably, a transparent measuring tube is provided above the upper shell, and an exhaust pipe located above the upper shell is provided on one side of the transparent measuring tube.

[0012] Preferably, an air guide pipe is connected above the exhaust pipe, and a vacuum pump is provided on one side of the air guide pipe.

[0013] Preferably, a vacuum pump is provided on one side of the exhaust pipe, a conduit is connected between the vacuum pump and the air guide pipe, and an air inlet pipe is provided on the front end surface of the conduit.

[0014] Beneficial effects

[0015] The utility model provides a concrete expansion and contraction measuring device. Compared with the prior art, it has the following features:

[0016] Beneficial effects:

[0017] 1. The upper shell and the lower shell are closed accordingly, so that the sealing ring at one end of the upper shell is inserted into the sealing groove opened inside the lower shell for sealing and fixing. At the same time, the first connecting plate and the second connecting plate are also in parallel contact at this time, and the first connecting plate and the second connecting plate are aligned with the connecting groove inside the reinforcing block and inserted, and the insertion rod is inserted through the slot opened inside the reinforcing block, and the first connecting plate and the second connecting plate are simultaneously penetrated for fixing. Finally, by pressing the U-shaped rods at both ends, the spring between the two U-shaped rods is compressed. When the insertion of the rods is completed, the two pressed U-shaped rods are released so that they are relaxed and ejected by the springs. Finally, the two U-shaped rods are inserted into the fixing grooves inside the reinforcing block to strengthen the fixation, thereby improving the sealing between the upper shell and the lower shell and improving the accuracy of the measurement data.

[0018] 2. When disassembling the upper shell and the lower shell, first press the two U-shaped rods so that the spring between the two U-shaped rods is compressed. At the same time, the two U-shaped rods are disengaged from the fixing grooves, and the rods can be disengaged from the reinforcement block and the first connecting plate and the second connecting plate. Finally, the reinforcement block can be removed from one side of the first connecting plate and the second connecting plate to complete the disassembly of the upper shell and the lower shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the measuring device of the present utility model;

[0020] Figure 2 This is a front view of the three-dimensional structure of the measuring device of the present invention;

[0021] Figure 3 For the utility model Figure 1 A local enlarged structural diagram;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the connection portion of the sealing structure of the present invention;

[0023] Figure 5 For the utility model Figure 4 Schematic diagram of the partially enlarged structure at cross section B.

[0024] In the figure: 1. upper shell; 2. exhaust pipe; 3. measuring tube; 4. lower shell; 5. first connecting plate; 6. second connecting plate; 7. sealing groove; 8. first through hole; 9. second through hole; 10. sealing ring; 11. reinforcing block; 12. plug rod; 13. slot; 14. snap-in groove; 15. U-shaped plug rod; 16. snap block; 17. snap slot; 18. fixed groove; 19. guide block; 20. guide rod; 21. spring; 22. movable groove. DETAILED DESCRIPTION

[0025] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-5 The utility model provides a technical solution: a concrete expansion and contraction measuring device, comprising an upper shell 1 and a lower shell 4, a first connecting plate 5 is fixedly provided on the lower end surface of the upper shell 1, a plurality of uniformly arranged first through holes 8 are opened on the surface of the first connecting plate 5, a second connecting plate 6 is provided on the upper end surface of the lower shell 4, a plurality of uniformly arranged second through holes 9 are opened on the surface of the second connecting plate 6, a reinforcement block 11 is provided on the four end surfaces outside the first connecting plate 5 and the second connecting plate 6, a sealing ring 10 is provided inside the first connecting plate 5, and a sealing groove 7 is provided on the upper end of the interior of the lower shell 4 , the sealing ring 10 is inserted into the sealing groove 7, and the lower end surfaces of the two U-shaped insertion rods 15 are fixed with a clamping block 16. The inner side of the reinforcing block 11 is provided with a clamping groove 17 on both sides. The clamping block 16 is inserted into the clamping groove 17. The upper shell 1 and the lower shell 4 are first closed correspondingly, so that the sealing ring 10 at one end of the upper shell 1 is inserted into the sealing groove 7 opened inside the lower shell 4 for sealing and fixing. At the same time, the first connecting plate 5 and the second connecting plate 6 are also in parallel and corresponding contact at this time, and then the first connecting plate 5 and the second connecting plate 6 are aligned with the clamping groove 14 inside the reinforcing block 11 and clamped in;

[0027] The reinforcing block 11 is provided with a snap-fitting groove 14, and the first connecting plate 5 and the second connecting plate 6 are snapped into the snap-fitting groove 14. Slots 13 are provided inside the two ends of the reinforcing block 11, and the inside of the slot 13 is penetrated by a rod 12, and the rod 12 is connected to the first connecting plate 5 and the second connecting plate 6 through the first through hole 8 and the second through hole 9 respectively. A movable groove 22 is provided at the upper and lower ends of the rod 12, and an arc groove is provided on one side of the two U-shaped rods 15. An anti-slip rubber pad is provided inside the arc groove. The lower end surface of the lower shell 4 is connected to the measuring tube 3, and a connecting pipe is connected between the measuring tube 3 and the lower shell 4. When the rod 12 is inserted through the slot 13 provided inside the reinforcing block 11, it penetrates the first connecting plate 5 and the second connecting plate 6 for fixation. Finally, by pressing the U-shaped rods 15 at both ends, the spring 21 between the two U-shaped rods 15 is compressed. When the rod 12 is inserted;

[0028] A guide rod 20 is provided inside the movable groove 22, and a U-shaped rod 15 is provided on both sides of the movable groove 22. A spring 21 is provided between the two U-shaped rods 15. The lower end surfaces of the two U-shaped rods 15 are provided with guide blocks 19 that are slidably sleeved on the outside of the guide rod 20. Fixed grooves 18 are provided on both sides of the interior of the reinforcement block 11. The two U-shaped rods 15 are inserted into the two fixed grooves 18. A transparent measuring tube is provided above the upper shell 1, and one side of the transparent measuring tube is provided with a The exhaust pipe 2 above, the exhaust pipe 2 is connected with an air guide pipe above, a vacuum pump is provided on one side of the air guide pipe, a vacuum pump is provided on one side of the exhaust pipe 2, a catheter is connected between the vacuum pump and the air guide pipe, and an air inlet pipe is provided on the front end face of the catheter. Release the two pressed U-shaped rods 15 so that they are relaxed and ejected by the spring 21, and finally the two U-shaped rods 15 are inserted into the fixing groove 18 inside the reinforcing block 11 to strengthen the fixation, thereby improving the sealing between the upper shell 1 and the lower shell 4 and improving the accuracy of the measurement data.

[0029] When working, the upper shell 1 and the lower shell 4 are first closed correspondingly, so that the sealing ring 10 at one end of the upper shell 1 is inserted into the sealing groove 7 opened inside the lower shell 4 for sealing and fixing. At the same time, the first connecting plate 5 and the second connecting plate 6 are also in parallel and corresponding contact at this time, and the first connecting plate 5 and the second connecting plate 6 are aligned with the engaging groove 14 inside the reinforcing block 11 and inserted, and the insertion rod 12 is inserted through the slot 13 opened in the reinforcing block 11, and then the first connecting plate 5 and the second connecting plate 6 are fixed at the same time. Finally, by pressing the U-shaped insertion rods 15 at both ends, the spring 21 between the two U-shaped insertion rods 15 is compressed. When the insertion rod 12 is inserted, the two U-shaped insertion rods 15 that are pressed are released, so that they are relaxed and ejected by the spring 21. Finally, the two U-shaped insertion rods 15 are inserted into the fixing groove 18 inside the reinforcing block 11 to strengthen the fixation, thereby improving the sealing between the upper shell 1 and the lower shell 4 and improving the accuracy of the measurement data. When the upper shell 1 and the lower shell 4 are disassembled, first press the two U-shaped rods 15 so that the spring 21 between the two U-shaped rods 15 is compressed. At the same time, the two U-shaped rods 15 are disengaged from the fixing grooves 18. Then, the rods 12 can be disengaged from the reinforcing block 11 and the first connecting plate 5 and the second connecting plate 6. Finally, the reinforcing block 11 can be removed from one side of the first connecting plate 5 and the second connecting plate 6, and the disassembly of the upper shell 1 and the lower shell 4 can be completed.

[0030] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A concrete expansion and contraction measuring device, comprising an upper shell (1) and a lower shell (4), characterized in that: The lower end surface of the upper shell (1) is fixedly provided with a first connecting plate (5), and the surface of the first connecting plate (5) is provided with a plurality of evenly arranged first through holes (8). The upper end surface of the lower shell (4) is provided with a second connecting plate (6), and the surface of the second connecting plate (6) is provided with a plurality of evenly arranged second through holes (9). The four end surfaces outside the first connecting plate (5) and the second connecting plate (6) are provided with reinforcing blocks (11), and the interior of the reinforcing blocks (11) is provided with a snap-fitting groove (14), and the first connecting plate (5) and the second connecting plate (6) are snapped into the snap-fitting groove (14). The interior of both ends of the reinforcing blocks (11) is provided with a slot (13), and the interior of the slot (13) is connected with an insert rod (12). The insertion rod (12) is connected to the first connecting plate (5) and the second connecting plate (6) through the first through hole (8) and the second through hole (9) respectively. The upper and lower ends of the insertion rod (12) are provided with movable grooves (22). The movable groove (22) is provided with a guide rod (20). The left and right sides of the movable groove (22) are provided with U-shaped insertion rods (15). A spring (21) is provided between the two U-shaped insertion rods (15). The lower end surfaces of the two U-shaped insertion rods (15) are provided with guide blocks (19) that are slidably sleeved on the outside of the guide rods (20). The left and right sides of the reinforcement block (11) are provided with fixed grooves (18). The two U-shaped insertion rods (15) are inserted into the two fixed grooves (18).

2. A concrete expansion and contraction measuring device according to claim 1, characterized in that: A sealing ring (10) is provided inside the first connecting plate (5), a sealing groove (7) is provided at the upper end inside the lower shell (4), and the sealing ring (10) is inserted into the sealing groove (7).

3. The concrete expansion and contraction measuring device according to claim 1, characterized in that: The lower end surfaces of the two U-shaped insertion rods (15) are fixedly provided with clamping blocks (16), and the active sides inside the reinforcing block (11) are both provided with clamping grooves (17), and the clamping blocks (16) are clamped into the clamping grooves (17).

4. The concrete expansion and contraction measuring device according to claim 1, characterized in that: An arc groove is provided on one side of the inside of the two U-shaped insertion rods (15), and an anti-slip rubber pad is provided inside the arc groove.

5. The concrete expansion and contraction measuring device according to claim 1, characterized in that: The lower end surface of the lower shell (4) is connected to a measuring tube (3), and a connecting tube is connected between the measuring tube (3) and the lower shell (4).

6. The concrete expansion and contraction measuring device according to claim 1, characterized in that: A transparent measuring tube is provided above the upper shell (1), and an exhaust pipe (2) located above the upper shell (1) is provided on one side of the transparent measuring tube.

7. The concrete expansion and contraction measuring device according to claim 6, characterized in that: An air guide pipe is connected above the exhaust pipe (2), and a vacuum pump is provided on one side of the air guide pipe.

8. The concrete expansion and contraction measuring device according to claim 6, characterized in that: A vacuum pump is provided on one side of the exhaust pipe (2); a conduit is connected between the vacuum pump and the air guide pipe; and an air inlet pipe is provided on the front end surface of the conduit.

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