A test device for self-detecting water-stable strength

Abstract

The present invention discloses a test device for self-detecting water-stabilizing strength, which relates to the technical field of road construction, and comprises a test bench, wherein a hydraulic device is fixedly installed on the top of the inner wall of the test bench, a pressure sensing device is fixedly installed on the bottom of the inner wall of the test bench, an arc plate is fixedly installed on the top of the pressure sensing device, and a protective device is also included; wherein the protective device comprises a fixed frame, a hollow tube, a sliding rod, a contact plate, an acrylic cover, an elastic telescopic rod and a pushing plate, wherein the fixed frame is fixedly installed on the inner wall of the test bench, and the hollow tube is fixedly installed on a side of the fixed frame close to the pressure sensing device, and through the synchronous movement of the pushing plate and the acrylic cover, an operator can safely and conveniently place a cement mixture, and can ensure that the cement mixture is accurately moved to a central position, thereby effectively improving the accuracy and reliability of the negative pressure test.

Description

Technical Field

[0001] The invention relates to the technical field of road construction, in particular to a testing device for self-detecting water-stable strength. Background Art

[0002] The test equipment for detecting water-stabilized strength is usually used to evaluate the strength changes of road engineering materials, especially cement mixtures, lime-stabilized soil and other materials after being soaked in water. The purpose of this type of test is to measure the compressive strength of the material under wet conditions to evaluate its long-term stability and resistance to water erosion.

[0003] The patent with patent announcement number CN217878673U relates to a test device for self-detecting water-stable strength, including a trolley, a support plate fixedly connected to the top of the support plate, an electric push rod fixedly connected to the top of the support plate, the output end of the electric push rod extends to the bottom of the support plate and is fixedly connected to a strength detector, and a placement table fixedly connected to the top of the trolley. The patent drives the gear to rotate by the output end of the first motor in the fragment recovery mechanism, and the gear drives the movable plate to move through the tooth plate while the gear rotates. When it moves to the specified position, cleaning can be completed, and the output end of the second motor in the clamping mechanism drives the two clamping plates to move to the opposite side through the linkage assembly. When it moves to the specified position, fixation can be completed, which solves the problem that the existing test device for self-detecting water-stable strength does not have the function of automatically cleaning the fragments and fixing the collection box.

[0004] In the above patent, the effect of automatically cleaning and collecting fragments is achieved. A fragment recovery mechanism is set up to collect the fragments, which effectively reduces the cleaning burden of the operator. However, during the unconfined compressive strength test, in order to ensure that a stable pressure is applied to the cement mixture, the operator needs to constantly adjust the position of the cement mixture to ensure that it is in the center area of ​​the pressure sensing device. This manual adjustment is not only time-consuming and labor-intensive, but also poses certain safety hazards. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a test device for self-detecting the strength of water-stabilizing structures, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a test device for self-detecting water-stable strength, comprising a test bench, a hydraulic device is fixedly installed on the top of the inner wall of the test bench, a pressure sensor is fixedly installed on the bottom of the inner wall of the test bench, an arc plate is fixedly installed on the top of the pressure sensor, and a protective device is also included; wherein the protective device includes a fixed frame, a hollow tube, a sliding rod, a contact plate, an acrylic cover, an elastic telescopic rod and a pushing plate, the acrylic cover is manually pushed to move in the direction of the fixed frame, the movement of the acrylic cover drives the sliding rod to move in the direction of the fixed frame, and the fixed frame is fixedly installed with a pressure sensor. The fixed frame is fixedly installed on the inner wall of the test bench, the hollow tube is fixedly installed on the side of the fixed frame close to the pressure sensor device, the sliding rod slides through the side of the hollow tube away from the fixed frame, the contact plate is fixedly installed on the circumferential surface of the sliding rod, the acrylic cover is fixedly installed on the side of the sliding rod away from the hollow tube, the elastic telescopic rod is fixedly installed on the side of the acrylic cover close to the pressure sensor device, the pushing plate is fixedly installed on the output end of the elastic telescopic rod, and the shape of the pushing plate is set to be arc-shaped. When the cement mixture moves to the central area of ​​the pressure sensor device, the cement mixture contacts the inner concave surface of the arc plate.

[0007] According to the above technical solution, a connecting tube is fixedly penetrated through the surface of the acrylic cover, a limiting rod is slidably penetrated through the inner and outer walls of the connecting tube, a No. 1 spring is arranged between the limiting rod and the connecting tube, the limiting rod is manually pulled to move away from the elastic telescopic rod, and the limiting rod stretches the No. 1 spring during the movement, a through groove is opened on the outer side wall of the test bench, and the size of the limiting rod is adapted to the through groove.

[0008] According to the above technical solution, a mounting frame is fixedly installed on the circumferential surface of the hollow tube, and the mounting frame is fixedly connected to the inner wall of the test bench. A slide groove is provided on the circumferential surface of the hollow tube, and the contact plate contacts the inner wall of the slide groove. When the contact plate moves, it is limited by the slide groove and moves linearly. A spherical surface 1 is provided on a side of the limit rod close to the push plate. The spherical surface 1 of the limit rod contacts the inner wall of the through groove during movement, so that the movement of the acrylic cover is limited.

[0009] The cam is provided with a push device for pushing the acrylic cover, and the push device is provided with an auxiliary device for ensuring smooth movement. The push device comprises a collecting frame, a sliding plate, a supporting plate, a scraper, a T-shaped rod, a linkage plate and a No. 2 spring. The supporting plate moves and contacts with the T-shaped rod, so that the support plate moves and drives the T-shaped rod to move in the direction of the fixed frame. The collecting frame is fixedly mounted on a side of the fixed frame close to the pressure sensing device, the sliding plate slides through the inner wall of the collecting frame, the supporting plate is fixedly mounted on the bottom of the sliding plate, the scraper is fixedly mounted on the surface of the support plate, the T-shaped rod slides through the inner wall of the collecting frame, the linkage plate is fixedly mounted on a side of the T-shaped rod close to the fixed frame, the No. 2 spring is arranged between the linkage plate and the collecting frame, the sliding plate contacts with a side of the contact plate close to the fixed frame, the contact plate moves and drives the sliding plate to move in the direction of the fixed frame, the sliding plate moves and drives the support plate to move in the direction of the fixed frame, and the scraper is provided with an inclined surface one on a side away from the support plate.

[0010] According to the above technical solution, the support plate contacts the bottom of the inner wall of the collection frame, and the scraper contacts the bottom of the inner wall of the collection frame. When the support plate moves, the collection frame provides the necessary supporting force for the support plate, and the stably moving support plate provides additional support for the sliding plate. The linkage plate is provided with a second inclined surface on one side away from the T-shaped rod.

[0011] According to the above technical scheme, the auxiliary device includes a hollow plate, a cross rod, a No. 3 spring, an elastic sheet and a plurality of gate-shaped rods. The cross rod squeezes the No. 3 spring during movement, and the No. 3 spring is deformed due to the squeezing. The hollow plate is fixedly installed on the top of the inner wall of the collection frame. The cross rod slides through the inner and outer walls of the hollow plate. The No. 3 spring is arranged between the cross rod and the hollow plate. The elastic sheet is fixedly installed on the circumferential surface of the cross rod. The plurality of gate-shaped rods are fixedly installed on the bottom of the inner wall of the hollow plate. A spherical surface 2 is provided on a side of the cross rod away from the hollow plate. The inclined surface 2 of the linkage plate contacts the spherical surface 2 of the cross rod during movement, and the inclined surface 2 moves to squeeze the spherical surface 2.

[0012] According to the above technical solution, a rectangular plate is fixedly installed on the circumferential surface of the cross rod, an electric push rod is fixedly installed on the top of the hollow plate, and an H-shaped frame is fixedly installed on the output end of the electric push rod. The circumferential surface of the H-shaped frame contacts a side of the rectangular plate close to the gate-shaped rod during movement, so that the H-shaped frame imposes a limit on the resetting of the rectangular plate.

[0013] According to the above technical solution, the elastic sheet is provided with arc surface 2 on both sides away from the cross rod, and the arc surface 2 of the elastic sheet contacts the circumferential surfaces of multiple gate-shaped rods during movement. Each time the gate-shaped rods contact, the gate-shaped rods apply resistance to the elastic sheet. A circular hole is provided on the top of the hollow plate, and the circumferential surface of the H-shaped frame contacts the inner wall of the circular hole.

[0014] The present invention provides a test device for self-detecting water-stabilizing strength. It has the following beneficial effects:

[0015] (1) In the test device for self-testing water-stable strength, the limit rod contacts the inner wall of the through groove, so that the movement of the acrylic cover is limited. Through the standardized operation process, the acrylic cover can be limited quickly and stably to ensure that the acrylic cover and the push plate will not move accidentally during the compression test, thereby ensuring the safety of the test process. At the same time, the cement mixture contacts the inner concave surface of the curved plate. Through the synchronous movement of the push plate and the acrylic cover, the operator can safely and conveniently place the cement mixture and ensure that the cement mixture moves accurately to the center position, thereby effectively improving the accuracy and reliability of the negative pressure test.

[0016] (2) In the test device for self-testing the strength of water-stable cementitious materials, the support plate and the sliding plate move to push the contact plate to move away from the fixed frame. The support plate provides a stable supporting force for the sliding plate, so that the sliding plate can smoothly push the contact plate to move, ensuring that the acrylic cover can be smoothly opened after the test, thereby effectively improving the convenience of operation. At the same time, the movement of the scraper drives the broken cement mixture to move. By arranging the scraper on the support plate, the scraper can take out most of the cement mixture fragments after the test, thereby effectively reducing the cleaning burden of the operator and ensuring the cleanliness of the test scene.

[0017] (3) The test device for self-testing the strength of water-stable cement blocks has a gate-shaped rod that transmits the vibration generated by the collision to the cement mixture. The elastic sheet collides with multiple gate-shaped rods to generate continuous vibration, which effectively prevents the cement mixture with a rough surface from getting stuck during movement, thereby ensuring the smooth progress of the pushing process. At the same time, the rectangular plate is limited, causing the No. 3 spring to be unable to recover. By limiting the rectangular plate, it is ensured that the deformed No. 3 spring will not cause unexpected risks due to loss of control. At the same time, limiting the rectangular plate can also stop using the elastic sheet, effectively improving the flexibility of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the position structure of the through groove of the present invention;

[0020] Figure 3 It is a schematic diagram of the position structure of the contact plate and the sliding plate of the present invention;

[0021] Figure 4 It is a schematic diagram of the internal structure of the protective device of the present invention;

[0022] Figure 5 For the present invention Figure 4The enlarged structural diagram at A in the middle;

[0023] Figure 6 It is a schematic diagram of the internal structure of the pushing device of the present invention;

[0024] Figure 7 Schematic diagram of the internal structure of the auxiliary device of the present invention.

[0025] In the figure: 1. test bench; 2. hydraulic device; 3. pressure sensing device; 4. arc plate; 5. fixed frame; 6. hollow tube; 7. sliding rod; 8. contact plate; 9. acrylic cover; 10. elastic telescopic rod; 11. pushing plate; 12. connecting tube; 13. limit rod; 14. No. 1 spring; 141. collecting frame; 142. sliding plate; 143. supporting plate; 144. scraper; 145. T-shaped rod; 146. linkage plate; 147. No. 2 spring; 151. hollow plate; 152. cross rod; 153. No. 3 spring; 154. elastic sheet; 155. door-shaped rod; 156. rectangular plate; 157. electric push rod; 158. H-shaped frame. DETAILED DESCRIPTION

[0026] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 7 One embodiment of the present invention is: a test device for self-detecting water-stabilizing strength, comprising a test bench 1, a hydraulic device 2 is fixedly installed on the top of the inner wall of the test bench 1, a pressure sensor 3 is fixedly installed on the bottom of the inner wall of the test bench 1, an arc plate 4 is fixedly installed on the top of the pressure sensor 3, and a protective device is also included; wherein the protective device includes a fixed frame 5, a hollow tube 6, a sliding rod 7, a contact plate 8, an acrylic cover 9, an elastic telescopic rod 10 and a push plate 11, the fixed frame 5 is fixedly installed on the inner wall of the test bench 1, the hollow tube 6 is fixedly installed on the fixed frame 5 near the pressure sensor 3, the sliding rod 7 slides through the side of the hollow tube 6 away from the fixing frame 5, the contact plate 8 is fixedly installed on the circumferential surface of the sliding rod 7, the acrylic cover 9 is fixedly installed on the side of the sliding rod 7 away from the hollow tube 6, the elastic telescopic rod 10 is fixedly installed on the side of the acrylic cover 9 close to the pressure sensing device 3, and the pushing plate 11 is fixedly installed on the output end of the elastic telescopic rod 10. The shape of the pushing plate 11 is set to be arc-shaped. Through the synchronous movement of the pushing plate 11 and the acrylic cover 9, the operator can safely and conveniently place the cement mixture and ensure that the cement mixture is accurately moved to the center position.

[0028] A connecting tube 12 is fixedly penetrated through the surface of the acrylic cover 9, and a limit rod 13 is slidably penetrated through the inner and outer walls of the connecting tube 12. A spring 14 is arranged between the limit rod 13 and the connecting tube 12. A through groove is provided on the outer wall of the test bench 1. The size of the limit rod 13 is adapted to the through groove. By providing a through groove adapted to the limit rod 13, it is ensured that the limit rod 13 can smoothly contact the through groove when resetting.

[0029] A mounting frame is fixedly installed on the circumferential surface of the hollow tube 6, and the mounting frame is fixedly connected to the inner wall of the test bench 1. A slide groove is provided on the circumferential surface of the hollow tube 6, and the contact plate 8 contacts the inner wall of the slide groove. A spherical surface is provided on the side of the limit rod 13 close to the push plate 11. Through standardized operating procedures, the acrylic cover 9 can be limited quickly and stably, thereby effectively improving the efficiency of the overall operation.

[0030] When the present embodiment is working, the soaked cylindrical cement mixture is placed on the edge area of ​​the pressure sensing device 3, and then the acrylic cover 9 is manually pushed to move in the direction of the fixed frame 5. The movement of the acrylic cover 9 drives the sliding rod 7 to move in the direction of the fixed frame 5. The movement of the sliding rod 7 drives the contact plate 8 to move in the direction of the fixed frame 5. At the same time, the movement of the acrylic cover 9 drives the elastic telescopic rod 10 to move in the direction of the fixed frame 5. The movement of the elastic telescopic rod 10 drives the push plate 11 to move in the direction of the fixed frame 5. The inner concave surface of the push plate 11 contacts the circumferential surface of the cement mixture during the movement, so that the movement of the push plate 11 drives the cement mixture to move in the direction of the fixed frame 5. When the cement mixture moves to the central area of ​​the pressure sensing device 3, the cement mixture contacts the inner concave surface of the arc plate 4, and the cement mixture is blocked by the arc plate 4 and stops moving, causing the push plate 11 in contact with the cement mixture to stop moving, while the acrylic cover 9 continues to move to squeeze the elastic telescopic rod 10. The output end of the elastic telescopic rod 10 is squeezed to exert a reaction force on the push plate 11, so that the push plate 11 cooperates with the arc plate 4 to limit the cement mixture in the central area of ​​the pressure sensing device 3. By synchronously moving the push plate 11 and the acrylic cover 9, the operator can safely and conveniently place the cement mixture and ensure the accurate movement of the cement mixture. The acrylic cover 9 moves to the center position, thereby effectively improving the accuracy and reliability of the negative pressure test. When pushing the acrylic cover 9 to move, the operator manually pulls the limit rod 13 to move away from the elastic telescopic rod 10. The limit rod 13 stretches the No. 1 spring 14 during the movement. The No. 1 spring 14 is deformed by the stretching. When the limit rod 13 moves to the predetermined position, the limit rod 13 is controlled to move in the direction of the fixed frame 5. The movement of the limit rod 13 drives the connecting tube 12 to move in the direction of the fixed frame 5. The movement of the connecting tube 12 drives the acrylic cover 9 to move in the direction of the fixed frame 5. The acrylic cover 9 contacts the outer side wall of the test bench 1 during the movement. When the acrylic cover 9 moves to the finger After the position is determined, the limit rod 13 is released, so that the deformed spring No. 14 is restored to drive the limit rod 13 to move in the direction of the elastic telescopic rod 10. The spherical surface of the limit rod 13 contacts the inner wall of the through groove during the movement, so that the movement of the acrylic cover 9 is limited, and then the hydraulic device 2 is started to perform an unlimited compressive strength test on the cement mixture. During the test, the pressure sensor device 3 detects the applied pressure in real time and provides feedback data. Through standardized operating procedures, the acrylic cover 9 can be limited quickly and stably to ensure that during the compression test, the acrylic cover 9 and the push plate 11 will not move accidentally, thereby ensuring the safety of the test process.

[0031] See also Figure 1-Figure 7On the basis of the above embodiment, in another embodiment of the present invention, a pushing device for pushing the acrylic cover 9 is provided on the fixed frame 5, and an auxiliary device for ensuring smooth movement is provided on the pushing device. The pushing device includes a collecting frame 141, a sliding plate 142, a supporting plate 143, a scraper 144, a T-shaped rod 145, a linkage plate 146 and a second spring 147. The collecting frame 141 is fixedly mounted on a side of the fixed frame 5 close to the pressure sensing device 3, the sliding plate 142 slides through the inner wall of the collecting frame 141, the supporting plate 143 is fixedly mounted on the bottom of the sliding plate 142, and the scraper 144 is fixedly mounted on the bottom of the sliding plate 142. 44 is fixedly mounted on the surface of the support plate 143, the T-shaped rod 145 slides through the inner wall of the collecting frame 141, the linkage plate 146 is fixedly mounted on the side of the T-shaped rod 145 close to the fixing frame 5, the second spring 147 is arranged between the linkage plate 146 and the collecting frame 141, the sliding plate 142 contacts with the side of the contact plate 8 close to the fixing frame 5, and the scraper 144 is provided with an inclined surface 1 on the side away from the support plate 143. By arranging the scraper 144 on the support plate 143, the scraper 144 can take out most of the cement mixture fragments after the test, thereby effectively reducing the cleaning burden of the operator.

[0032] The support plate 143 contacts the bottom of the inner wall of the collecting frame 141, the scraper 144 contacts the bottom of the inner wall of the collecting frame 141, and the linkage plate 146 has a second inclined surface on the side away from the T-shaped rod 145. The support plate 143 provides a stable supporting force for the sliding plate 142, so that the sliding plate 142 can smoothly push the contact plate 8 to move, ensuring that the acrylic cover 9 can be smoothly opened after the test.

[0033] The auxiliary device includes a hollow plate 151, a cross rod 152, a No. 3 spring 153, an elastic sheet 154 and a plurality of door-shaped rods 155. The hollow plate 151 is fixedly mounted on the top of the inner wall of the collecting frame 141. The cross rod 152 slides through the inner and outer walls of the hollow plate 151. The No. 3 spring 153 is arranged between the cross rod 152 and the hollow plate 151. The elastic sheet 154 is fixedly mounted on the circumferential surface of the cross rod 152. A plurality of door-shaped rods 155 are fixedly mounted on the bottom of the inner wall of the hollow plate 151. A spherical surface 2 is provided on one side of the cross rod 152 away from the hollow plate 151. Continuous vibration is generated through the collision between the elastic sheet 154 and the plurality of door-shaped rods 155, thereby effectively preventing the cement mixture with a rough surface from getting stuck during movement.

[0034] A rectangular plate 156 is fixedly installed on the circumferential surface of the cross rod 152, an electric push rod 157 is fixedly installed on the top of the hollow plate 151, and an H-shaped frame 158 is fixedly installed on the output end of the electric push rod 157. By limiting the rectangular plate 156, it is ensured that the deformed No. 3 spring 153 will not cause unexpected risks due to loss of control. At the same time, limiting the rectangular plate 156 can also stop the use of the elastic sheet 154.

[0035] The elastic sheet 154 is provided with arc surfaces 2 on both sides away from the cross rod 152, a circular hole is provided on the top of the hollow plate 151, and the circumferential surface of the H-shaped frame 158 contacts the inner wall of the circular hole. The provision of the arc surface 2 helps to reduce the wear of the elastic sheet 154, thereby extending the service life of the elastic sheet 154.

[0036] When the present embodiment is working, the contact plate 8 moves to drive the sliding plate 142 to move toward the fixed frame 5, and the sliding plate 142 moves to drive the support plate 143 to move toward the fixed frame 5. When the support plate 143 moves, the collection frame 141 provides the necessary support force for the support plate 143, and the stably moving support plate 143 provides additional support for the sliding plate 142, ensuring that the sliding plate 142 does not affect the stability of the contact plate 8 during movement. At the same time, the support plate 143 moves to contact with the T-shaped rod 145, so that the support plate 143 moves to drive the T-shaped rod 145 toward the fixed frame 5. The T-shaped rod 145 moves in the direction of the fixed frame 5, and the linkage plate 146 moves in the direction of the fixed frame 5. The linkage plate 146 stretches the No. 2 spring 147 during the movement, and the No. 2 spring 147 is deformed by the stretching. When the test is over, the operator releases the limit of the acrylic cover 9 according to the standard operation, so that the deformed No. 2 spring 147 recovers and drives the linkage plate 146 to reset. The linkage plate 146 moves to drive the T-shaped rod 145 to reset. The T-shaped rod 145 moves to drive the support plate 143 and the sliding plate 142 to move away from the fixed frame 5. The support plate 143 and the sliding plate 142 The support plate 143 provides a stable support force for the sliding plate 142, so that the sliding plate 142 can smoothly push the contact plate 8 to move, ensuring that the acrylic cover 9 can be smoothly opened after the test, thereby effectively improving the convenience of operation. The support plate 143 moves while driving the scraper 144 to move in the direction of the fixed frame 5. During the test, the scraper 144 will stay at the specified position. When the cement mixture is broken during the test, the broken cement mixture is blocked by the acrylic cover 9 and falls downward. To the inside of the collecting frame 141, after the test is finished, the T-shaped rod 145 drives the support plate 143 to reset, and the support plate 143 moves to drive the scraper 144 to move away from the fixing frame 5, and the inclined surface of the scraper 144 contacts the broken cement mixture during the movement, so that the scraper 144 moves and drives the broken cement mixture to move away from the fixing frame 5. By arranging the scraper 144 on the support plate 143, the scraper 144 can take out most of the cement mixture fragments after the test is finished, thereby effectively reducing the cleaning burden of the operator and ensuring the cleanliness of the test scene;

[0037] The second inclined surface of the linkage plate 146 contacts the second spherical surface of the cross rod 152 during movement, and the second inclined surface moves to squeeze the second spherical surface, and the cross rod 152 is squeezed to move in the direction of the electric push rod 157. The cross rod 152 squeezes the third spring 153 during movement, and the third spring 153 is squeezed and deformed. At the same time, the movement of the cross rod 152 drives the elastic sheet 154 to move in the direction of the electric push rod 157. The arc surface 2 of the elastic sheet 154 contacts the circumferential surfaces of multiple gate-shaped rods 155 during movement. Each time they contact, the gate-shaped rod 155 applies resistance to the elastic sheet 154, causing the elastic sheet 154 to continue to move and deform. When the contact surface of the elastic sheet 154 and the gate-shaped rod 155 is separated, the deformed elastic sheet 154 quickly recovers, so that the elastic sheet 154 collides with the next gate-shaped rod 155 during the recovery process, generating continuous vibration. The gate-shaped rod 155 transmits the vibration generated by the collision to the cement mixture, ensuring that the cement mixture remains smooth during movement. The elastic sheet 154 collides with multiple gate-shaped rods 155 to generate continuous vibration, which effectively prevents the cement mixture with a rough surface from getting stuck when moving, thereby ensuring the smooth progress of the pushing process. The cross rod 152 moves and drives the rectangular plate 156 to move in the direction of the electric push rod 157. When the rectangular plate 156 moves to the predetermined position, the electric push rod 157 is started, and the output end of the electric push rod 157 drives the H-shaped frame 158 to move downward. The circumferential surface of the H-shaped frame 158 contacts the side of the rectangular plate 156 close to the gate-shaped rod 155 during the movement, so that the H-shaped frame 158 imposes a limit on the reset of the rectangular plate 156. The rectangular plate 156 is limited, resulting in the deformation of the third spring 153 being restricted and unable to recover. By limiting the rectangular plate 156, it is ensured that the deformed third spring 153 will not cause accidental risks due to loss of control. At the same time, limiting the rectangular plate 156 can also stop using the elastic sheet 154, effectively improving the flexibility of operation.

[0038] 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. A test device for self-testing water-stable strength, comprising a test bench, characterized in that: A hydraulic device is fixedly installed on the top of the inner wall of the test bench, a pressure sensor is fixedly installed on the bottom of the inner wall of the test bench, an arc plate is fixedly installed on the top of the pressure sensor, and a protective device is also included; Wherein, the protective device comprises a fixed frame, a hollow tube, a sliding rod, a contact plate, an acrylic cover, an elastic telescopic rod and a push plate, wherein the fixed frame is fixedly mounted on the inner wall of the test bench, the hollow tube is fixedly mounted on a side of the fixed frame close to the pressure sensing device, the sliding rod slides through a side of the hollow tube away from the fixed frame, the contact plate is fixedly mounted on the circumferential surface of the sliding rod, the acrylic cover is fixedly mounted on a side of the sliding rod away from the hollow tube, the elastic telescopic rod is fixedly mounted on a side of the acrylic cover close to the pressure sensing device, the push plate is fixedly mounted on the output end of the elastic telescopic rod, and the shape of the push plate is set to be arc-shaped; Wherein, the fixing frame is provided with a pushing device for pushing the acrylic cover, and the pushing device is provided with an auxiliary device for ensuring smooth movement; A connecting tube is fixedly passed through the surface of the acrylic cover, a limiting rod is slidably passed through the inner and outer walls of the connecting tube, a No. 1 spring is arranged between the limiting rod and the connecting tube, a through groove is opened on the outer side wall of the test bench, and the size of the limiting rod is adapted to the through groove.

2. A test device for self-detecting water-stabilizing strength according to claim 1, characterized in that: A mounting frame is fixedly installed on the circumferential surface of the hollow tube, and the mounting frame is fixedly connected to the inner wall of the test bench. A sliding groove is opened on the circumferential surface of the hollow tube, and the contact plate contacts the inner wall of the sliding groove. A spherical surface is opened on one side of the limit rod close to the push plate.

3. A test device for self-detecting water-stable strength according to claim 2, characterized in that: The pushing device includes a collecting frame, a sliding plate, a supporting plate, a scraper, a T-shaped rod, a linkage plate and a No. 2 spring. The collecting frame is fixedly mounted on a side of the fixing frame close to the pressure sensing device, the sliding plate slides through the inner wall of the collecting frame, the supporting plate is fixedly mounted on the bottom of the sliding plate, the scraper is fixedly mounted on the surface of the supporting plate, the T-shaped rod slides through the inner wall of the collecting frame, the linkage plate is fixedly mounted on a side of the T-shaped rod close to the fixing frame, the No. 2 spring is arranged between the linkage plate and the collecting frame, the sliding plate contacts a side of the contact plate close to the fixing frame, and the scraper is provided with an inclined surface one on a side away from the supporting plate.

4. A test device for self-detecting water-stabilizing strength according to claim 3, characterized in that: The support plate contacts the bottom of the inner wall of the collecting frame, the scraper contacts the bottom of the inner wall of the collecting frame, and a second inclined surface is provided on a side of the linkage plate away from the T-shaped rod.

5. A test device for self-detecting water-stabilizing strength according to claim 4, characterized in that: The auxiliary device includes a hollow plate, a cross rod, a No. 3 spring, an elastic sheet and a plurality of door-shaped rods. The hollow plate is fixedly mounted on the top of the inner wall of the collection frame, the cross rod slides through the inner and outer walls of the hollow plate, the No. 3 spring is arranged between the cross rod and the hollow plate, the elastic sheet is fixedly mounted on the circumferential surface of the cross rod, a plurality of the door-shaped rods are fixedly mounted on the bottom of the inner wall of the hollow plate, and a second arc surface is provided on a side of the cross rod away from the hollow plate.

6. A test device for self-testing water-stabilizing strength according to claim 5, characterized in that: A rectangular plate is fixedly mounted on the circumferential surface of the cross rod, an electric push rod is fixedly mounted on the top of the hollow plate, and an H-shaped frame is fixedly mounted on the output end of the electric push rod.

7. A test device for self-testing water-stabilizing strength according to claim 6, characterized in that: The two sides of the elastic sheet away from the cross rod are both provided with arc surfaces 2, the top of the hollow plate is provided with a circular hole, and the circumferential surface of the H-shaped frame contacts the inner wall of the circular hole.

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