Underwater non-dispersing type shield mortar underwater strength test piece forming device and using method thereof

Abstract

The invention relates to the technical field of mortar testing, in particular to an underwater non-dispersive shield mortar underwater strength test piece forming device and a using method thereof.The underwater non-dispersive shield mortar underwater strength test piece forming device comprises a half-arch bridge, baffles and a supporting plate, the baffles are arranged on the two sides of the top of the half-arch bridge, and the supporting plate is connected to the bottom of one side of the half-arch bridge; the half-arch bridge is a quarter arc plate with the radius of 100 mm, the width of the half-arch bridge is 50 mm, the thickness of the half-arch bridge is 2 mm, the baffles are arranged on the two sides of the top of the half-arch bridge, the height of the baffles is 10 mm, the width of the baffles is 5 mm, the supporting plate is connected to the bottom of one side of the half-arch bridge, the height of the supporting plate is 102 mm, the width of the supporting plate is 50 mm, and the thickness of the supporting plate is 2 mm. An alignment device is arranged at the top of the front end of the positioning device. Through the arrangement of the receiving device, the alignment device, the synchronizing device and the positioning device, the purpose of self-positioning limitation of the forming device during use of the shield mortar underwater strength test piece forming device is achieved, so that the reliability of an underwater non-dispersed shield mortar waterway strength ratio test result is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of mortar testing, and more specifically, to an underwater strength specimen forming device for underwater non-dispersible shield mortar and its usage method. Background Art

[0002] The water-land strength ratio test is a test method used to evaluate the strength performance of materials (such as concrete, mortar, etc.) under different environmental conditions (underwater and on land). This test method is mainly used to evaluate the anti-dispersion property, water erosion resistance, and strength retention ability of materials in an underwater environment, especially for materials used in underwater construction or underwater projects (such as shield mortar, underwater concrete, etc.).

[0003] Underwater non-dispersible shield mortar is mainly designed for shield tunnel construction to ensure that the synchronous grouting material is not diluted by underground high-pressure water during the pouring process, thereby achieving the effect of filling and reinforcing the surrounding rock. The underwater strength specimen forming device designed in the present invention ensures that its forming method conforms to the actual construction through specific structural design and working principle, so as to ensure that the underwater strength obtained from the test has engineering representativeness and reliability.

[0004] Currently, when the underwater strength specimen forming device for the water-land strength ratio test mortar on the market is in use, since it is installed in the test mold by positioning and the size of the test mold is larger than that of the forming device, the forming device will slide in the test mold, resulting in the inability to perform the self-positioning limitation of the forming device and the synchronous injection of mortar when the existing water-land strength ratio test mortar forming device is in use. Therefore, an equipment is needed to improve the above problems. Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides an underwater strength specimen forming device for underwater non-dispersible shield mortar and its usage method.

[0006] The technical solution adopted by the present invention to solve its technical problems is: an underwater strength specimen forming device for underwater non-dispersible shield mortar and its usage method, including a semi-arch bridge, a baffle, and a support plate. The baffle is arranged on both sides of the top of the semi-arch bridge, and the support plate is connected to the bottom of one side of the semi-arch bridge. The semi-arch bridge is a quarter circular arc plate with a radius of 100 mm, a width of 50 mm, and a thickness of 2 mm. The baffle is arranged on both sides of the top of the semi-arch bridge, with a height of 10 mm and a width of 5 mm. The support plate is connected to the bottom of one side of the semi-arch bridge, with a height of 102 mm, a width of 50 mm, and a thickness of 2 mm.

[0007] Specifically, a receiving device is sleeved outside the semi-arch bridge. A synchronization device is arranged outside the receiving device. A positioning device is arranged inside the synchronization device. A alignment device is arranged at the top of the front end of the positioning device. The receiving device includes a first mating interface, a second test mold, a guiding push rod, an extending side rod, a round gasket, a first return spring, an L-shaped positioning plate, an arc-shaped clamping plate and a covering top plate. The covering top plate is slidably installed at the top end of the second test mold. The first mating interface is fixedly installed at the front end of the top of the covering top plate. The extending side rods are symmetrically and slidably inserted into both sides inside the second test mold. The round gasket is fixedly installed on the outer ring of the extending side rod away from the second test mold. The first return spring is fixedly installed between the second test mold and the round gasket. The L-shaped positioning plate is fixedly installed at the top of the side end of the round gasket close to the second test mold. The arc-shaped clamping plate is fixedly installed at the bottom end of the covering top plate. The guiding push rod is fixedly installed at the side end of the extending side rod close to the second test mold.

[0008] Specifically, the alignment device includes a delivery pump, a support bottom plate, a displacement slide plate, a wire pulley, a second return spring and a second mating interface. The second mating interface is fixedly installed at the rear end of the delivery pump. The delivery pump is fixedly installed at the top end of the displacement slide plate. The displacement slide plate is slidably inserted into the inner bottom end of the support bottom plate. The second return springs are symmetrically fixedly installed between the displacement slide plate and the support bottom plate. The wire pulleys are rotatably installed at both ends of the support bottom plate.

[0009] Specifically, the synchronization device includes a connecting rope, a special-shaped side frame, a movable connecting frame, a lower edge support arm, a third return spring, a displacement support seat, a groove, an extending bottom plate and an extending slide rod. The connecting rope is fixedly installed at the front end of the special-shaped side frame. The special-shaped side frame is fixedly installed at the side end of the extending bottom plate. The extending bottom plate is fixedly installed at both ends of the displacement support seat. The extending slide rods are symmetrically fixedly installed at the front top end of the displacement support seat. The movable connecting frame is slidably sleeved at the top end of the extending slide rod. The third return springs are symmetrically fixedly installed between the movable connecting frame and the displacement support seat. The lower edge support arms are symmetrically fixedly installed at the front end of the movable connecting frame.

[0010] Specifically, the positioning device includes a limit top plate, a lead screw, a driving motor and a water accumulation cavity. The limit top plate and the driving motor are fixedly installed at the rear top and bottom of the water accumulation cavity respectively. The lead screw is installed between the limit top plate and the driving motor.

[0011] Specifically, the support bottom plate is fixedly installed at the front top of the water accumulation cavity. The second test mold is fixedly installed between the two lower edge support arms. One end of the connecting rope away from the special-shaped side frame is connected to the displacement slide plate. The displacement support seat is threadedly sleeved on the outer ring of the lead screw. The movable connecting frame is slidably inserted into the inside of the limit top plate.

[0012] Specifically, empty slots are symmetrically opened on both sides of the covering top plate. The bottom end of the extending side rod away from the guiding push rod is inclined at 45°. The inner ring of the arc-shaped clamping plate fits the outer surface of the baffle plate, and the guiding push rod is horizontally aligned with the baffle plate.

[0013] Specifically, clamping keys are symmetrically and fixedly installed at the bottom end of the displacement sliding plate, and clamping grooves are symmetrically opened at the inner bottom end of the support bottom plate.

[0014] Specifically, round holes are symmetrically opened inside the bottom end of the movable connecting frame, threaded holes are opened inside the displacement support seat, and square grooves are opened inside the front end of the limiting top plate.

[0015] A method for using a device for forming underwater strength specimens of underwater non-dispersible shield mortar includes the following steps:

[0016] (1) Place the test mold (70.7 mm × 70.7 mm × 70.7 mm) into the water tank, and inject water into the water tank. The water level exceeding the upper surface of the test mold should not be less than 10 mm.

[0017] (2) Place the semi-arch bridge, baffle plate and support plate into the test mold in the water tank, and continuously pour mortar into the test mold using the device. When there is a large amount of mortar in the test mold, slowly lift the device upward to make the mortar fill the test mold. This process should be completed within 30 s.

[0018] (3) Take the test mold out of the water and let it stand for 5 min - 10 min to allow the water attached to the grouting material slurry to flow out.

[0019] (4) Gently tap the two sides of the test mold with a wooden hammer to promote drainage. After leveling the surface of the specimen, the test mold should be put back into the water for curing.

[0020] (5) Demold after curing with the mold for 3 d. After demolding, the test block should be continuously placed in the water for curing. The water temperature throughout the curing process should be 20°C ± 3°C. After curing to the 28 d age, conduct a strength test.

[0021] The beneficial effects of the present invention:

[0022] First, when the second test mold moves downward, it can drive the extending side rod to fit the inner wall of the water accumulation cavity, so that the guiding push rod can move into the interior of the second test mold. Thus, the guiding push rod can limit and squeeze the baffle plate at the center inside the second test mold. Moreover, when the extending side rod moves, it can drive the L-shaped positioning plate to insert into the interior of the covering top plate, so that the covering top plate can be restricted on the top end of the second test mold, thereby avoiding the phenomenon of the covering top plate falling off and completing the work of restricting the baffle plate inside the second test mold.

[0023] Second, when the lower edge support arm drives the second test mold towards the inner bottom end of the water accumulation cavity in the present invention, it can drive the extension slide rod to continuously move downward inside the bottom end of the movable connecting frame. As a result, the extension bottom plate can pull the connecting rope through the special-shaped side frame to drive the displacement slide plate to displace backward, so that the second pair of interfaces can be inserted into the first pair of interfaces. At this time, the delivery pump can be turned on, so that the second pair of interfaces can convey mortar into the second test mold through the first pair of interfaces, completing the work of synchronously conveying mortar inside the second test mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the drawings and embodiments.

[0025] Figure 1 It is a front perspective three-dimensional structure schematic diagram of the main body in the present invention;

[0026] Figure 2 It is a schematic diagram of the second embodiment of the test mold, device and water tank in the present invention;

[0027] Figure 3 It is a partial cross-sectional schematic diagram of the receiving device and the positioning device in the present invention;

[0028] Figure 4 It is a partial cross-sectional schematic diagram of the receiving device in the present invention;

[0029] Figure 5 It is a front perspective three-dimensional structure schematic diagram of the alignment device in the present invention;

[0030] Figure 6 It is a partial cross-sectional schematic diagram of the synchronization device in the present invention;

[0031] Figure 7 In the present invention Figure 6 Local enlarged schematic diagram at A;

[0032] Figure 8 It is a rear perspective three-dimensional structure schematic diagram of the positioning device in the present invention.

[0033] In the figure: 1 - semi - arch bridge, 2 - baffle, 3 - support plate, 4 - receiving device, 5 - alignment device, 6 - synchronization device, 7 - positioning device, 8 - first docking interface, 9 - second test mold, 10 - guiding push rod, 11 - extended side rod, 12 - round gasket, 13 - first return spring, 14 - L - shaped positioning plate, 15 - arc clamping plate, 16 - covering top plate, 17 - transfer pump, 18 - support bottom plate, 19 - displacement slide plate, 20 - wire pulley, 21 - second return spring, 22 - second docking interface, 23 - connecting rope, 24 - special - shaped side frame, 25 - movable connection frame, 26 - lower - edge support arm, 27 - third return spring, 28 - displacement support seat, 29 - groove, 30 - extended bottom plate, 31 - extended slide rod, 32 - limit top plate, 33 - lead screw, 34 - drive motor, 35 - water - accumulation cavity. Detailed implementation manners

[0034] In order to enable those skilled in the art of this technology to better understand the solution of this application, the following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0035] The present invention will be further described below with reference to the accompanying drawings.

[0036] Embodiment 1

[0037] As Figure 1 shown, an underwater non - dispersible shield mortar underwater strength specimen forming device and its usage method of the present invention include a semi - arch bridge 1, a baffle 2 and a support plate 3. The baffle 2 is arranged on both sides of the top of the semi - arch bridge 1, and the support plate 3 is connected to the bottom of one side of the semi - arch bridge 1. The semi - arch bridge 1 is a quarter - circular arc plate. The baffle 2 is arranged on both sides of the top of the semi - arch bridge 1, and the support plate 3 is connected to the bottom of one side of the semi - arch bridge 1;

[0038] The radius of the semi - arch bridge 1 is 90 mm - 120 mm, the width is 50 mm - 70 mm, and the thickness is 1 mm - 2 mm;

[0039] Preferably, the size of the semi - arch bridge 1 is: radius 100 mm, width 50 mm, thickness 2 mm;

[0040] The height of the baffle 2 is 5 mm - 20 mm, and the width is 1 mm - 10 mm;

[0041] Preferably, the size of the baffle 2 is: height 10 mm, width 5 mm;

[0042] The height of the support plate 3 is 100 mm - 110 mm, the width is 40 mm - 60 mm, and the thickness is 1 mm - 3 mm;

[0043] Preferably, the size of the support plate 3 is: 102 mm in height, 50 mm in width, and 2 mm in thickness.

[0044] The working principle of Embodiment 1 is as follows: When in use, place the test mold into the water tank, inject water into the water tank until the water level is higher than the upper surface of the test mold. Subsequently, place the semi-arch bridge 1 in the test mold in the water tank. Use the device to continuously pour mortar into the test mold. When there is a large amount of mortar in the test mold, slowly lift the device to make the mortar fill the test mold. Then take the test mold out of the water, let it stand for 5 min to 10 min to allow the water attached to the grouting material slurry to flow out. Gently tap the two sides of the test mold with a wooden hammer to promote drainage. After leveling the surface of the specimen, the test mold should be put back into the water for curing. Demold after 3 days of curing with the mold. After demolding, the test block should be continuously placed in the water for curing. The water temperature throughout the curing process should be 20°C ± 3°C. After curing to the age of 28 days, conduct a strength test.

[0045] Embodiment 2

[0046] Based on Embodiment 1, as Figure 2 、 Figure 3 and Figure 4 shown, a receiving device 4 is sleeved outside the semi-arch bridge 1. A synchronization device 6 is arranged on the outside of the receiving device 4. A positioning device 7 is arranged inside the synchronization device 6. A positioning device 5 is arranged at the top of the front end of the positioning device 7. The receiving device 4 includes a first docking port 8, a second test mold 9, a guiding push rod 10, an extending side rod 11, a round gasket 12, a first return spring 13, an L-shaped positioning plate 14, an arc-shaped clamping plate 15, and a covering top plate 16. The covering top plate 16 is slidably installed at the top end of the second test mold 9. The first docking port 8 is fixedly installed at the front end of the top of the covering top plate 16. The extending side rods 11 are symmetrically and slidably inserted into both sides inside the second test mold 9. The round gasket 12 is fixedly installed on the outer ring of the extending side rod 11 away from the second test mold 9. The first return spring 13 is fixedly installed between the second test mold 9 and the round gasket 12. The L-shaped positioning plate 14 is fixedly installed at the top of the side end of the round gasket 12 close to the second test mold 9. The arc-shaped clamping plate 15 is fixedly installed at the bottom end of the covering top plate 16. The guiding push rod 10 is fixedly installed on the side end of the extending side rod 11 close to the second test mold 9.

[0047] As Figure 5, the alignment device 5 includes a delivery pump 17, a support base plate 18, a displacement slide plate 19, a wire pulley 20, a second return spring 21, and a second docking port 22. The second docking port 22 is fixedly installed at the rear end of the delivery pump 17, and the delivery pump 17 is fixedly installed at the top of the displacement slide plate 19. The displacement slide plate 19 is slidably inserted into the inner bottom end of the support base plate 18. The second return spring 21 is symmetrically and fixedly installed between the displacement slide plate 19 and the support base plate 18. The wire pulley 20 is rotatably installed at both ends of the support base plate 18. By passing the connecting rope 23 through the wire pulley 20, the connecting rope 23 pulls the displacement slide plate 19 to move linearly.

[0048] As Figure 6 and Figure 7 , the synchronization device 6 includes a connecting rope 23, a special-shaped side frame 24, a movable connecting frame 25, a lower-edge support arm 26, a third return spring 27, a displacement support seat 28, a groove 29, an extended base plate 30, and an extended slide rod 31. The connecting rope 23 is fixedly installed at the front end of the special-shaped side frame 24. The special-shaped side frame 24 is fixedly installed at the side end of the extended base plate 30. The extended base plate 30 is fixedly installed at both ends of the displacement support seat 28. The extended slide rod 31 is symmetrically and fixedly installed at the front top of the displacement support seat 28. The movable connecting frame 25 is slidably sleeved at the top end of the extended slide rod 31. The third return spring 27 is symmetrically and fixedly installed between the movable connecting frame 25 and the displacement support seat 28. The lower-edge support arm 26 is symmetrically and fixedly installed at the front end of the movable connecting frame 25. By sliding the extended slide rod 31 and inserting it into the inner bottom end of the movable connecting frame 25, when the movable connecting frame 25 moves downward to the limit position, the displacement support seat 28 can move downward linearly.

[0049] As Figure 8 , the positioning device 7 includes a limit top plate 32, a lead screw 33, a drive motor 34, and a water accumulation cavity 35. The limit top plate 32 and the drive motor 34 are fixedly installed at the top and bottom of the rear end of the water accumulation cavity 35. The lead screw 33 is installed between the limit top plate 32 and the drive motor 34. By sliding the movable connecting frame 25 up and down inside the limit top plate 32, it can ensure that the movable connecting frame 25 moves linearly.

[0050] The support base plate 18 is fixedly installed at the front top of the water accumulation cavity 35. The second test die 9 is fixedly installed between the two lower edge support arms 26. One end of the connecting rope 23 far from the special-shaped side frame 24 is connected to the displacement slide plate 19. The displacement support seat 28 is threadedly sleeved on the outer ring of the lead screw 33. The movable connection frame 25 is slidably inserted into the inside of the limit top plate 32. Empty slots are symmetrically opened on both sides of the covering top plate 16. The bottom of the side of the extension side rod 11 far from the guiding push rod 10 is inclined at 45°. The inner ring of the arc-shaped clamping plate 15 fits the outer ring surface of the baffle plate 2. The guiding push rod 10 is horizontally aligned with the baffle plate 2. Keys are symmetrically fixedly installed at the bottom end of the displacement slide plate 19. And clamping grooves are symmetrically opened at the bottom end inside of the support base plate 18. Circular holes are symmetrically opened at the bottom end inside of the movable connection frame 25. A threaded hole is opened inside the displacement support seat 28. A square groove is opened at the front end inside of the limit top plate 32.

[0051] When implementing this embodiment, the covering top plate 16 can be moved upward until it is disengaged from the second test mold 9, and then the semi-arch bridge 1 can be placed at the inner bottom end of the second test mold 9. At the same time, the covering top plate 16 can be placed flat on the top of the second test mold 9. Subsequently, the driving motor 34 can be started to drive the lead screw 33 to rotate clockwise. Since the displacement support base 28 is threadedly sleeved on the outer ring of the lead screw 33, the lead screw 33 can drive the displacement support base 28 to move downward. At this time, when the movable connection frame 25 moves downward, the second test mold 9 can be driven to move downward into the water accumulation cavity 35 simultaneously through the lower edge support arm 26. Since there is water accumulated in the water accumulation cavity 35, water can enter the inside of the second test mold 9. At the same time, when the second test mold 9 moves downward, it can drive the extension side rod 11 to move away from the bottom of the second test mold 9 and fit against the inner wall of the water accumulation cavity 35. Through the blocking of the water accumulation cavity 35, when the second test mold 9 drives the extension side rod 11 to fit against the inner wall of the water accumulation cavity 35, the extension side rod 11 can drive the guiding push rod 10 to slide into the second test mold 9, so that the four guiding push rods 10 can limit the baffle 2 to be located at the center inside the second test mold 9. At the same time, when the extension side rod 11 moves into the second test mold 9, the top end of the L-shaped positioning plate 14 can penetrate through both sides of the second test mold 9 and into the empty slots inside both sides of the covering top plate 16, so that the covering top plate 16 can be restricted on the top of the second test mold 9. And when the baffle 2 is located at the center inside the second test mold 9, the arc-shaped clamping plate 15 can be aligned with the gap between the two baffles 2, so that the arc-shaped clamping plate 15 can enclose the periphery of the baffle 2, facilitating the formation of mortar between the semi-arch bridge 1 and the arc-shaped clamping plate 15. Subsequently, when the lower edge support arm 26 moves downward to the limit position, the top end of the movable connection frame 25 can fit against the top end of the water accumulation cavity 35. Through the blocking of the water accumulation cavity 35, the lower edge support arm 26 cannot continue to move downward. At this time, due to the third return spring 27 being arranged between the movable connection frame 25 and the displacement support base 28, when the movable connection frame 25 is blocked, the displacement support base 28 can continue to move downward. At this time, when the displacement support base 28 moves downward, through the arrangement of the extension bottom plate 30 and the special-shaped side frame 24, the connecting rope 23 can be driven to pull the displacement sliding plate 19 to displace backward. Through the sliding of the clamping key at the bottom end of the displacement sliding plate 19 in the card slot inside the top end of the support bottom plate 18, the support delivery pump 17 can be driven to move in a straight line. And when the movable connection frame 25 moves downward to the limit position, the first pair of interfaces 8 can be horizontally aligned with the second pair of interfaces 22. Therefore, when the connecting rope 23 pulls the displacement sliding plate 19 to drive the delivery pump 17 to move backward, the second pair of interfaces 22 can be inserted into the inside of the first pair of interfaces 8. At this time, the delivery pump 17 can be turned on. Since the delivery pump 17 is connected to the external mortar storage device, the delivery pump 17 can transport the mortar from the second pair of interfaces 22 and the first pair of interfaces 8 to the inside of the second test mold 9.After the mortar is transported to the inside of the second test mold 9, when the inside of the second test mold 9 is filled with mortar, the drive motor 34 can be started to drive the screw rod 33 to rotate counterclockwise, so that the displacement support seat 28 can be displaced upward. At this time, when the displacement support seat 28 is displaced upward, the displacement support seat 28 can drive the special-shaped side frame 24 to release the connecting rope 23, and the elasticity of the second return spring 21 can drive the displacement slide plate 19 to move to the front end, so that the delivery pump 17 is reset, so that the second docking port 22 can be moved out from the inside of the first docking port 8. Then, when the displacement support seat 28 continues to move upward, it can contact the bottom end of the movable connecting frame 25, so that when the displacement support seat 28 continues to move upward, it can push the movable connecting frame 25 to move upward. At this time, when When the movable connecting frame 25 moves upward, it can drive the lower support arm 26 and the second test mold 9 to move upward. When the second test mold 9 drives the extended side rod 11 to move out of the water accumulation cavity 35, the elasticity of the first return spring 13 will drive the round gasket 12 to move outward, so that the extended side rod 11 can drive the guide push rod 10 to disengage from the baffle 2, releasing the semi-arch bridge 1, and when the extended side rod 11 moves outward, it can drive the L-shaped positioning plate 14 to move out of the empty grooves on both sides of the covering top plate 16, so that the covering top plate 16 can be released. Subsequently, the covering top plate 16 can be taken out from the second test mold 9. At the same time, a drainage hole is opened at the bottom rear end of the second test mold 9, so that excess water can be discharged from the drainage hole to complete the work.

[0052] 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. An underwater non-dispersed shield mortar underwater strength test piece forming device, comprising a semi-arch bridge (1), a baffle (2) and a support plate (3), characterized in that: The baffle (2) is arranged on both sides of the top of the semi-arch bridge (1), and the support plate (3) is connected to the bottom of one side of the semi-arch bridge (1). The semi-arch bridge (1) is a quarter arc plate with a radius of 100 mm. The baffle (2) is arranged on both sides of the top of the semi-arch bridge (1), and the support plate (3) is connected to the bottom of one side of the semi-arch bridge (1).

2. The underwater non-dispersed shield mortar underwater strength test piece forming device according to claim 1 is characterized by: The outer periphery of the semi-arch bridge (1) is sleeved with a receiving device (4), the outer side of the receiving device (4) is provided with a synchronizing device (6), the interior of the synchronizing device (6) is provided with a positioning device (7), the front end top of the positioning device (7) is provided with a positioning device (5), the receiving device (4) comprises a first docking interface (8), a second test mold (9), a guide push rod (10), an extended side rod (11), a round gasket (12), a first return spring (13), an L-shaped locating plate (14), an arc clamping plate (15) and a covering top plate (16), the covering top plate (16) is slidably mounted on the top of the second test mold (9), the first docking interface (8) is fixedly mounted The extending side rod (11) is mounted on the top front end of the covering top plate (16), the extending side rod (11) is symmetrically slidably inserted into the inner two sides of the second test mold (9), the circular gasket (12) is fixedly mounted on the outer ring of the extending side rod (11) away from the second test mold (9), the first return spring (13) is fixedly mounted between the second test mold (9) and the circular gasket (12), the L-shaped positioning plate (14) is fixedly mounted on the top of the side end of the circular gasket (12) close to the second test mold (9), the arc clamping plate (15) is fixedly mounted on the bottom end of the covering top plate (16), and the guide push rod (10) is fixedly mounted on the side end of the extending side rod (11) close to the second test mold (9).

3. The underwater non-dispersed shield mortar underwater strength test piece forming device according to claim 2 is characterized by: The alignment device (5) comprises a delivery pump (17), a support base plate (18), a displacement slide plate (19), a guide wheel (20), a second return spring (21) and a second docking port (22); the second docking port (22) is fixedly mounted at the rear end of the delivery pump (17); the delivery pump (17) is fixedly mounted at the top end of the displacement slide plate (19); the displacement slide plate (19) is slidably inserted into the inner bottom end of the support base plate (18); the second return spring (21) is symmetrically fixedly mounted between the displacement slide plate (19) and the support base plate (18); and the guide wheel (20) is rotatably mounted at both ends of the support base plate (18).

4. The underwater non-dispersed shield mortar underwater strength test piece forming device according to claim 3 is characterized by: The synchronization device (6) comprises a connecting rope (23), a special-shaped side frame (24), a movable connecting frame (25), a lower edge support arm (26), a third reset spring (27), a displacement support seat (28), a groove (29), an extension base plate (30) and an extension slide rod (31), wherein the connecting rope (23) is fixedly mounted on the front end of the special-shaped side frame (24), the special-shaped side frame (24) is fixedly mounted on the side end of the extension base plate (30), the extension base plate (30) is fixedly mounted on both ends of the displacement support seat (28), the extension slide rod (31) is symmetrically fixedly mounted on the top front end of the displacement support seat (28), the movable connecting frame (25) is slidably sleeved on the top end of the extension slide rod (31), the third reset spring (27) is symmetrically fixedly mounted between the movable connecting frame (25) and the displacement support seat (28), and the lower edge support arm (26) is symmetrically fixedly mounted on the front end of the movable connecting frame (25).

5. The underwater non-dispersed shield mortar underwater strength test piece forming device according to claim 4 is characterized by: The positioning device (7) comprises a limit top plate (32), a screw rod (33), a drive motor (34) and a water accumulation cavity (35); the limit top plate (32) and the drive motor (34) are fixedly mounted on the top and bottom of the rear end of the water accumulation cavity (35); and the screw rod (33) is installed between the limit top plate (32) and the drive motor (34).

6. The underwater non-dispersed shield mortar underwater strength test piece forming device according to claim 5, characterized in that: The supporting bottom plate (18) is fixedly mounted on the front end top of the water accumulation cavity (35), the second test mold (9) is fixedly mounted between the two lower edge support arms (26), the end of the connecting rope (23) away from the special-shaped side frame (24) is connected to the displacement slide plate (19), the displacement support seat (28) is threadedly sleeved on the outer ring of the screw rod (33), and the movable connecting frame (25) is slidably inserted into the interior of the limiting top plate (32).

7. The underwater non-dispersed shield mortar underwater strength test piece forming device according to claim 6, characterized in that: Empty grooves are symmetrically provided on both sides of the covering top plate (16); the bottom of the side end of the extending side rod (11) is inclined at 45 degrees away from the guide push rod (10); the inner ring of the arc clamping plate (15) is in contact with the outer ring surface of the baffle (2); and the guide push rod (10) is horizontally aligned with the baffle (2).

8. The underwater non-dispersed shield mortar underwater strength test piece forming device according to claim 7, characterized in that: The bottom end of the displacement slide plate (19) is symmetrically fixed with a clamping key, and the inner bottom end of the support bottom plate (18) is symmetrically provided with a clamping groove.

9. The underwater non-dispersed shield mortar underwater strength test piece forming device according to claim 8, characterized in that: The bottom end of the movable connecting frame (25) is symmetrically provided with circular holes, the displacement support seat (28) is provided with threaded holes, and the front end of the limiting top plate (32) is provided with a square groove.

10. A method for using an underwater non-dispersed shield mortar underwater strength test piece forming device, using the underwater non-dispersed shield mortar forming device according to claim 9, characterized in that: It includes the following steps: (1) Place the test mold (70.7 mm × 70.7 mm × 70.7 mm) into a water tank and inject water into the tank. The water level should not be less than 10 mm above the upper surface of the test mold. (2) Place the semi-arch bridge (1), baffle (2) and support plate (3) in the test mold of the water tank, and use the device to continuously pour mortar into the test mold. When the amount of mortar in the test mold is large, slowly lift the device up to fill the test mold with mortar. This process should be completed within 30 seconds. (3) Take the test mold out of the water and let it stand for 5 to 10 minutes to allow the water attached to the grouting material to flow out. (4) Use a wooden hammer to tap the two sides of the test mold to promote drainage. After smoothing the surface of the test piece, the test mold should be placed back in water for curing. (5) After 3 days of curing, the mold should be removed. After the mold is removed, the test block should continue to be placed in water for curing. The water temperature during the whole curing process should be 20℃±3℃. After curing for 28 days, the strength test should be carried out.

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