Material strength detection device for civil engineering mechanics experiment

Abstract

The invention provides a material strength detection device for civil engineering mechanics experiments, and relates to the field of detection devices. The material strength detection device for the civil engineering mechanics experiment comprises a limiting device, two adjusting devices and a hardness detection device, the two adjusting devices are arranged on the two sides of the limiting device respectively, the hardness detection device is arranged at the front end of the limiting device, a first lead screw is rotationally connected to the middle of the top end of a first fixing plate, and a second lead screw is rotationally connected to the middle of the top end of a second fixing plate. First fixing frames are fixedly connected to the two sides of the inner side wall of the supporting frame correspondingly, sliding rods are fixedly connected to the inner side walls of the two first fixing frames, second fixing frames are fixedly connected to the movable ends of the two hydraulic rods, rolling shafts are rotationally connected to the inner side walls of the second fixing frames, and guide grooves are formed in the middles of the side walls of the rolling shafts. By arranging the limiting device, the strength of the plate-shaped material can be detected, by arranging the adjusting device, the diversity of the detection function of the device is improved, and by arranging the hardness detection device, the detection range is widened.

Description

Technical Field

[0001] The invention relates to the technical field of detection devices, in particular to a material strength detection device used in civil engineering mechanics experiments. Background Art

[0002] The ability of a material to resist destruction under the action of external force is called the strength of the material. When a material is subjected to an external force, stress is generated inside it. As the external force increases, the stress increases accordingly until the binding force between particles inside the material is insufficient to resist the external force. The material is then destroyed. The limit value reached by the stress when the material is destroyed is called the ultimate strength of the material, usually represented by f. The unit of material strength is megapascals, and depending on the type of force, the strength of the material in different aspects may vary, such as vertical pressure, outward tension or bending force, etc.

[0003] Although the prior art detects the strength of materials through a detection device, the detection function is single and cannot match the problem of materials of different specifications, resulting in inaccurate detection data. Therefore, the technical personnel in this field provide a material strength detection device for civil engineering mechanics experiments to solve the problems raised in the above background technology. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the present invention provides a material strength testing device for civil engineering mechanics experiments, which can perform fixed testing on materials of different specifications, effectively improving the diversity of testing and solving the problem of inaccurate test data caused by a single testing function and an inability to match materials of different specifications.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a material strength detection device for civil engineering mechanics experiments, comprising a limit device, two adjustment devices and a hardness detection device, the two adjustment devices are respectively arranged on both sides of the limit device, the hardness detection device is arranged at the front end of the limit device, the limit device comprises a first support plate, a controller is fixedly connected to one side of the top of the first support plate, a support frame is fixedly connected to the middle of the top of the first support plate, a first fixed plate is fixedly connected to the middle of the inner side wall of the support frame, and a first fixed plate is rotatably connected to the middle of the top of the first fixed plate. A screw rod, a first motor is fixedly connected to the other side of the top of the first fixed plate, a driven gear is fixedly connected to the middle of the bottom end of the first fixed plate, and a transmission gear is rotatably connected to the other side of the bottom end of the first fixed plate. First fixed frames are fixedly connected to both sides of the inner side wall of the support frame, sliding rods are fixedly connected to the two inner side walls of the first fixed frames, and slide plates are slidably connected to the two side walls of the sliding rods, and hydraulic rods are fixedly connected to the front and rear sides of the top of the slide plate respectively, and the movable ends of the two hydraulic rods are fixedly connected to the second fixed frame, and a roller is rotatably connected to the inner side wall of the second fixed frame, and a guide groove is provided in the middle of the side wall of the roller.

[0008] The cam is connected with the second motor, and the second motor is connected with the third motor by the threaded connection to the sliding block, and the second motor is connected with the third motor by the threaded connection to the sliding block.

[0009] Preferably: the hardness testing device includes a second support plate, a placing plate is rotatably connected to the middle part of the top end of the second support plate, a third mounting frame is fixedly connected to the top end of the second support plate, a limiting frame is fixedly connected to the inner wall of the third mounting frame at the upper position, a rack is slidably connected to the inner wall of the limiting frame, an adjusting gear is rotatably connected to the other side of the inner wall of the limiting frame, a second turning handle is rotatably connected to the other side of the front end of the limiting frame, a pressure head is fixedly connected to the bottom end of the rack, and the rear end of the second support plate is fixedly connected to the middle part of the front end of the first support plate.

[0010] Preferably: the output end of the first motor passes through the upper end surface of the first fixed plate and is fixedly connected to the middle part of the top of the transmission gear, the driven gear is meshed with the transmission gear, and the bottom end of the first screw rod passes through the top of the first fixed plate and is threadedly connected to the middle part of the driven gear.

[0011] Preferably: one end of the second screw rod passes through the rear end of the first mounting frame and is fixedly connected to the middle of the first handle, the output end of the second motor passes through one side of the second mounting frame and is fixedly connected to one end of the third screw rod, and the two fixing bolts pass through the upper end surface of the pressure plate and are threadedly connected to the front side of the top of the second fixing plate.

[0012] Preferably, the middle portion of the rear end of the second turning handle passes through the front end of the limiting frame and is fixedly connected to the middle portion of the front end of the adjusting gear, and the adjusting gear is meshedly connected to the side wall of the rack.

[0013] Preferably, the two guide wheels, the two chucks and the guide groove are all located in the same vertical plane.

[0014] Preferably, the top end of the first screw rod is rotatably connected to the middle of the bottom end of the slide plate, and the slide plate is slidably connected to the inner side wall of the support frame.

[0015] Working principle: When it is necessary to inspect the plate-like material, firstly, holes are opened at both ends of the material, the second motor 203 is turned on, and the slider 208 is driven to rotate by the third screw rod 2011, so that the second fixing plate 207 can be moved to a suitable position, and the two ends of the material are placed on the top of the second fixing plate 207 respectively, and the material is fixed by rotating the fixing bolt 209. According to the characteristics of the hydraulic rod 1010, the hydraulic rod 1010 contracts at this time, and the roller 1011 will move downward to contact the surface of the material, and the first motor 1015 is turned on, and the transmission gear 1014 is driven to rotate by the first motor 1015, and the material can be gradually pressed down by the roller 1011. By gradually applying pressure, the material can be judged. Stress and deformation conditions. Similarly, the rod-shaped material is fixed by two chucks 2013, and under the action of the guide wheel 2012 and the guide groove 108, the stress and deformation conditions of the rod-shaped material can be observed. At the same time, the shorter rod-shaped material can be placed between the sliding clamp 202 and the fixed clamp 204. By rotating the first handle 201, the deformation condition of the material when subjected to force in the same direction can be observed. The material is placed on the placement plate 302, and the second handle 307 is rotated. By rotating the second handle 307, the pressure head 308 is brought into contact with the surface of the material and a certain pressure is applied. After a period of time, the second handle 307 is rotated in the opposite direction to lift the pressure head 308, and the indentation made by the pressure head 308 is measured, and the hardness of the material is calculated using the formula.

[0016] (III) Beneficial effects

[0017] The present invention provides a material strength detection device for civil engineering mechanics experiments. It has the following beneficial effects:

[0018] 1. By setting a limit device, firstly, holes are opened at both ends of the material, and the second motor is turned on. The slider is driven to rotate by the third screw rod, and the second fixed plate can be moved to a suitable position. The two ends of the material are placed on the top of the second fixed plate respectively, and the material is fixed by rotating the fixing bolts. At this time, the hydraulic rod contracts, and the roller moves downward to contact the surface of the material. The first motor is turned on, and the transmission gear is driven to rotate by the first motor. The material can be gradually pressed down by the roller. By gradually applying pressure, the stress deformation of the material can be determined, and the strength of the plate material can be tested.

[0019] 2. By setting up the adjustment device, the rod-shaped material is fixed by two chucks, and under the action of the guide wheel and the guide groove, the stress deformation of the rod-shaped material can be observed. The guide wheel and the guide groove can be used to limit the rod-shaped material, thereby improving the diversity of the device's detection function.

[0020] 3. By setting the first mounting frame on the second fixed plate, a shorter rod-shaped material can be placed between the sliding clamp and the fixed clamp. By rotating the first handle, the deformation of the material when subjected to force in the same direction can be observed, effectively improving the adaptability of the device to different materials during the detection process.

[0021] 4. By setting up a hardness testing device, place the material on the placement plate, turn the second handle, and make the indenter contact with the material surface and apply a certain pressure. After a period of time, turn the second handle in the opposite direction to lift the indenter, measure the indentation made by the indenter, and use the formula to calculate the hardness of the material. In the detection process, the hardness of the material can be effectively tested and the detection range can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the hardness testing device of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the regulating device of the present invention;

[0025] Figure 4 It is a front view structural schematic diagram of the present invention;

[0026] Figure 5 It is a front view structural schematic diagram of the hardness testing device of the present invention;

[0027] Figure 6It is a front view structural schematic diagram of the regulating device of the present invention;

[0028] Figure 7 It is a front view structural schematic diagram of the limiting device of the present invention.

[0029] Among them, 1. limit device; 101. first fixed frame; 102. slide bar; 103. first fixed plate; 104. controller; 105. first screw rod; 106. slide plate; 107. first support plate; 108. guide groove; 109. support frame; 1010. hydraulic rod; 1011. roller; 1012. second fixed frame; 1013. driven gear; 1014. transmission gear; 1015. first motor; 2. adjustment device; 201. first handle; 202. sliding clamp; 203. second motor; 20 4. Fixing splint; 205. First mounting frame; 206. Second screw rod; 207. Second fixing plate; 208. Sliding block; 209. Fixing bolt; 2010. Pressing plate; 2011. Third screw rod; 2012. Guide wheel; 2013. Chuck; 2014. Positioning plate; 2015. Second mounting frame; 3. Hardness testing device; 301. Second supporting plate; 302. Placement plate; 303. Third mounting frame; 304. Limiting frame; 305. Rack; 306. Adjusting gear; 307. Second turning handle; 308. Pressing head. DETAILED DESCRIPTION

[0030] 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.

[0031] Embodiment 1:

[0032] like Figure 1-7As shown, an embodiment of the present invention provides a material strength detection device for civil engineering mechanics experiments, including a limit device 1, two adjustment devices 2 and a hardness detection device 3, the two adjustment devices 2 are respectively arranged on both sides of the limit device 1, the hardness detection device 3 is arranged at the front end of the limit device 1, the limit device 1 includes a first support plate 107, a controller 104 is fixedly connected to one side of the top of the first support plate 107, a support frame 109 is fixedly connected to the middle of the top of the first support plate 107, a first fixed plate 103 is fixedly connected to the middle of the inner wall of the support frame 109 at a lower position, a first screw rod 105 is rotatably connected to the middle of the top of the first fixed plate 103, a first motor 1015 is fixedly connected to the other side of the top of the first fixed plate 103, a driven gear 1013 is fixedly connected to the middle of the bottom of the first fixed plate 103, and a first fixed plate 103 is fixedly connected to the other side of the bottom of the first fixed plate 103. A transmission gear 1014 is rotatably connected, and the first fixed frames 101 are fixedly connected to the inner wall of the support frame 109 on both sides, and the inner walls of the two first fixed frames 101 are fixedly connected to the sliding rods 102, and the side walls of the two sliding rods 102 are slidably connected to the slide plates 106, and the front and rear sides of the top ends of the slide plates 106 are fixedly connected, and the movable ends of the two hydraulic rods 1010 are fixedly connected to the second fixed frames 1012, and the inner wall of the second fixed frame 1012 is rotatably connected to the roller 1011, and the middle part of the side wall of the roller 1011 is provided with a guide groove 108, by setting the limit device 1, firstly, holes are opened at both ends of the material, and the second motor 203 is turned on, and the slider 208 is driven to rotate by the third screw rod 2011, so that the second fixed plate 207 can be moved to a suitable position, and the two ends of the material can be placed on the top of the second fixed plate 207 respectively.

[0033] The material is fixed by rotating the fixing bolt 209. At this time, the hydraulic rod 1010 contracts, the roller 1011 moves downward to contact the surface of the material, and the first motor 1015 is turned on. The transmission gear 1014 is driven to rotate by the first motor 1015, and the material can be gradually pressed down by the roller 1011. By gradually applying pressure, the stress deformation of the material can be determined, and the strength of the plate material can be tested.

[0034] The adjusting device 2 includes a second mounting frame 2015, the inner side wall of the second mounting frame 2015 is rotatably connected to the third screw rod 2011, one side of the positioning plate 2014 is fixedly connected to the second motor 203, the side wall of the third screw rod 2011 is threadedly connected to the slider 208, the top of the slider 208 is fixedly connected to the second fixing plate 207, one side of the second fixing plate 207 is fixedly connected to the first mounting frame 205, the front end of the first mounting frame 205 is fixedly connected to the fixed clamping plate 204, the rear end of the first mounting frame 205 is rotatably connected to the first rotating handle 201, the inner side wall of the first mounting frame 205 is rotatably connected to the second screw rod 206, the side wall of the second screw rod 206 is threadedly connected to the sliding clamping plate 202, and the middle part of the top of the second fixing plate 207 is fixedly connected to the positioning plate 20 14, a chuck 2013 is respectively arranged at the upper position on the other side of the positioning plate 2014, a guide wheel 2012 is fixedly connected to the middle part of the other side of the positioning plate 2014, a pressing plate 2010 is fixedly connected to the other side of the top of the second fixing plate 207, and fixing bolts 209 are rotatably connected to the front and rear sides of the top of the pressing plate 2010 respectively, and two second mounting frames 2015 are respectively fixedly connected to the upper positions on both sides of the supporting frame 109, by setting the adjusting device 2, the rod-shaped material is fixed by the two chucks 2013, and under the action of the guide wheel 2012 and the guide groove 108, the stress deformation of the rod-shaped material can be observed, and the guide wheel 2012 and the guide groove 108 can be used to limit the rod-shaped material, thereby improving the diversity of the detection function of the device.

[0035] The hardness testing device 3 includes a second supporting plate 301, a placing plate 302 is rotatably connected to the middle part of the top of the second supporting plate 301, a third mounting frame 303 is fixedly connected to the top of the second supporting plate 301, a limiting frame 304 is fixedly connected to the inner wall of the third mounting frame 303 at the upper position, a rack 305 is slidably connected to the inner wall of the limiting frame 304, an adjusting gear 306 is rotatably connected to the other side of the inner wall of the limiting frame 304, a second rotating handle 307 is rotatably connected to the other side of the front end of the limiting frame 304, a pressing head 308 is fixedly connected to the bottom end of the rack 305, and the third mounting frame 303 is fixedly connected to the inner wall of the limiting frame 304. The rear end of the second support plate 301 is fixedly connected to the middle part of the front end of the first support plate 107. By setting the hardness detection device 3, the material is placed on the placement plate 302, and the second handle 307 is rotated. By rotating the second handle 307, the pressure head 308 is brought into contact with the surface of the material and a certain pressure is applied. After a period of time, the second handle 307 is rotated in the opposite direction to lift the pressure head 308, measure the indentation made by the pressure head 308, and use the formula to calculate the hardness of the material. In the detection process, the hardness of the material can be effectively detected and the detection range is improved.

[0036] The output end of the first motor 1015 passes through the upper end surface of the first fixed plate 103 and is fixedly connected to the middle of the top of the transmission gear 1014. The driven gear 1013 is meshed with the transmission gear 1014. The bottom end of the first screw rod 105 passes through the top of the first fixed plate 103 and is threadedly connected to the middle of the driven gear 1013. One end of the second screw rod 206 passes through the rear end of the first mounting frame 205 and is fixedly connected to the middle of the first rotating handle 201. The output end of the second motor 203 passes through one side of the second mounting frame 2015 and is fixedly connected to one end of the third screw rod 2011. Two fixing bolts 209 pass through the upper end surface of the pressing plate 2010 and are threadedly connected to the front side of the top of the second fixed plate 207. The middle of the rear end of the second rotating handle 307 passes through the limit frame 3 04, the front end is fixedly connected to the middle of the front end of the adjusting gear 306, the adjusting gear 306 is meshed with the side wall of the rack 305, the two guide wheels 2012, the two chucks 2013 and the guide groove 108 are all located in the same vertical plane, the top of the first screw rod 105 is rotatably connected to the middle of the bottom end of the slide plate 106, the slide plate 106 is slidably connected to the inner wall of the support frame 109, and by arranging the first mounting frame 205 on the second fixed plate 207, the shorter rod-shaped material can be placed between the sliding clamp plate 202 and the fixed clamp plate 204, and by rotating the first handle 201, the deformation state of the material when subjected to force in the same direction can be observed, which effectively improves the adaptability of the device to different materials during the detection process.

[0037] 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 material strength detection device for civil engineering mechanics experiments, comprising a limit device (1), two adjustment devices (2) and a hardness detection device (3), wherein the two adjustment devices (2) are respectively arranged on both sides of the limit device (1), and the hardness detection device (3) is arranged at the front end of the limit device (1), characterized in that: The limiting device (1) comprises a first support plate (107), a controller (104) is fixedly connected to one side of the top end of the first support plate (107), a support frame (109) is fixedly connected to the middle of the top end of the first support plate (107), a first fixed plate (103) is fixedly connected to the middle of the inner wall of the support frame (109) at a lower position, a first screw rod (105) is rotatably connected to the middle of the top end of the first fixed plate (103), a first motor (1015) is fixedly connected to the other side of the top end of the first fixed plate (103), a driven gear (1013) is fixedly connected to the middle of the bottom end of the first fixed plate (103), and another gear (1013) is fixedly connected to the bottom end of the first fixed plate (103). One side is rotatably connected with a transmission gear (1014); the inner side walls of the support frame (109) are respectively fixedly connected with first fixed frames (101); the inner side walls of the two first fixed frames (101) are fixedly connected with sliding rods (102); the side walls of the two sliding rods (102) are slidably connected with slide plates (106); the front and rear sides of the top ends of the slide plates (106) are respectively fixedly connected with hydraulic rods (1010); the movable ends of the two hydraulic rods (1010) are fixedly connected with second fixed frames (1012); the inner side walls of the second fixed frames (1012) are rotatably connected with rollers (1011); and a guide groove (108) is provided in the middle of the side wall of the roller (1011).

2. A material strength detection device for civil engineering mechanics experiments according to claim 1, characterized in that: The adjusting device (2) comprises a second mounting frame (2015), the inner side wall of the second mounting frame (2015) is rotatably connected to a third screw rod (2011), one side of the positioning plate (2014) is fixedly connected to a second motor (203), the side wall of the third screw rod (2011) is threadedly connected to a slider (208), the top end of the slider (208) is fixedly connected to a second fixing plate (207), one side of the second fixing plate (207) is fixedly connected to a first mounting frame (205), one side of the front end of the first mounting frame (205) is fixedly connected to a fixing clamping plate (204), the rear end of the first mounting frame (205) is rotatably connected to a first rotating handle (201), the inner side of the first mounting frame (205) is fixedly connected to a second fixing plate (207), and the inner side of the first mounting frame (205) is fixedly connected to a fixing clamping plate (204). The side wall is rotatably connected to a second screw rod (206), the side wall of the second screw rod (206) is threadedly connected to a sliding clamp (202), the middle of the top end of the second fixed plate (207) is fixedly connected to a positioning plate (2014), the other side of the positioning plate (2014) is respectively provided with a chuck (2013) at an upper position, the middle of the other side of the positioning plate (2014) is fixedly connected to a guide wheel (2012), the other side of the top end of the second fixed plate (207) is fixedly connected to a pressure plate (2010), the top end of the pressure plate (2010) is respectively rotatably connected to fixing bolts (209) at the front side and the rear side, and the two second mounting frames (2015) are respectively fixedly connected to the upper positions on both sides of the support frame (109).

3. A material strength detection device for civil engineering mechanics experiments according to claim 1, characterized in that: The hardness detection device (3) comprises a second support plate (301), a placing plate (302) is rotatably connected to the middle of the top end of the second support plate (301), a third mounting frame (303) is fixedly connected to the top end of the second support plate (301), a limiting frame (304) is fixedly connected to the inner wall of the third mounting frame (303) at an upper position, a rack (305) is slidably connected to the inner wall of the limiting frame (304), an adjusting gear (306) is rotatably connected to the other side of the inner wall of the limiting frame (304), a second rotating handle (307) is rotatably connected to the other side of the front end of the limiting frame (304), a pressing head (308) is fixedly connected to the bottom end of the rack (305), and the rear end of the second support plate (301) is fixedly connected to the middle of the front end of the first support plate (107).

4. The material strength detection device for civil engineering mechanics experiments according to claim 1, characterized in that: The output end of the first motor (1015) passes through the upper end surface of the first fixed plate (103) and is fixedly connected to the middle of the top end of the transmission gear (1014); the driven gear (1013) is meshingly connected to the transmission gear (1014); and the bottom end of the first screw rod (105) passes through the top end of the first fixed plate (103) and is threadedly connected to the middle of the driven gear (1013).

5. The material strength detection device for civil engineering mechanics experiments according to claim 2, characterized in that: One end of the second screw rod (206) passes through the rear end of the first mounting frame (205) and is fixedly connected to the middle of the first rotating handle (201); the output end of the second motor (203) passes through one side of the second mounting frame (215) and is fixedly connected to one end of the third screw rod (211); and the two fixing bolts (209) pass through the upper end surface of the pressure plate (210) and are threadedly connected to the front side of the top end of the second fixing plate (207).

6. The material strength testing device for civil engineering mechanics experiments according to claim 3, characterized in that: The middle part of the rear end of the second turning handle (307) passes through the front end of the limiting frame (304) and is fixedly connected to the middle part of the front end of the adjusting gear (306), and the adjusting gear (306) is meshedly connected to the side wall of the rack (305).

7. The material strength testing device for civil engineering mechanics experiments according to claim 2, characterized in that: The two guide wheels (2012), the two chucks (2013) and the guide groove (108) are all located in the same vertical plane.

8. The material strength detection device for civil engineering mechanics experiments according to claim 1, characterized in that: The top end of the first screw rod (105) is rotatably connected to the middle of the bottom end of the slide plate (106), and the slide plate (106) is slidably connected to the inner wall of the support frame (109).

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