A device for testing the impact resistance of building materials

Abstract

The present invention belongs to the technical field of impact resistance test, and discloses a device for testing the impact resistance of building materials, including a main frame, a linkage mechanism is arranged in the middle of the main frame; the linkage mechanism includes a support frame rotatably arranged on both sides of the inner wall of the main frame, an installation groove is provided on the upper end surface of the support frame, and a transverse screw is rotatably arranged in the installation groove; a fixing mechanism includes a movable housing movably arranged in the installation groove, a longitudinal screw is rotatably arranged inside the groove on one side of the movable housing, a rotating rod is fixed at the bottom of the longitudinal screw, and a clamping plate is threadedly arranged on the surface of the longitudinal screw; an impact mechanism includes a fixed seat movably arranged at the top of the inner wall of the main frame, a rotating shaft is rotatably arranged at the bottom of the fixed seat, a storage housing is fixed on the surface of the rotating shaft, and an impact hammer is inserted at the bottom of the storage housing. It has the function of impacting materials in multiple directions to increase the test range, and at the same time, the test material is kept suspended and fixed to prevent rebound and improve the test accuracy.

Description

Technical Field

[0001] The invention belongs to the technical field of impact resistance detection, in particular to a device for testing the impact resistance of building materials. Background Art

[0002] Building materials are a general term for materials used in civil engineering and construction engineering. When concrete is used, an impact tester is needed to test the concrete's impact resistance. The impact strength can directly reflect, evaluate or judge a material's ability to resist impact. Impact testers generally test concrete through falling ball impact. When using existing impact testers, the test material needs to be fixed on the workbench, and then it is dropped through the impact mechanism to test the building material. The test range is relatively single, and the unloading phenomenon is formed, which reduces the accuracy.

[0003] As disclosed in publication number CN202320013956.X, a device for detecting the impact resistance of building materials includes: an impact plate; a support column, wherein the support column is provided in plurality, and the plurality of support columns are fixedly connected to the upper end of the impact plate; a driving plate, wherein the driving plate is fixedly connected to the upper ends of the plurality of support columns; a repeated impact mechanism, wherein the repeated impact mechanism includes an impact groove, an impact column, a rack and a half-tooth gear, wherein the impact groove is provided at the upper end of the driving plate, the impact column is provided in the impact groove, the rack is fixedly connected to one side end of the impact column, the half-tooth gear is provided at one side of the impact column and meshes with the rack; a driving mechanism, wherein the driving mechanism is provided at the upper side of the driving plate to drive the repeated impact mechanism to operate. The above device has the following deficiencies in actual use:

[0004] The device fixes the test material laterally on the upper surface of the impact plate through the clamping plates on both sides, and then impacts the surface of the test material through the impact column to achieve the test effect. However, this test method can only perform impact test on the center point of the upper end of the test material, and the test range is relatively limited. At the same time, since the test material is fixed on the plane of the workbench, a certain degree of rebound will occur when the top surface is hit violently, which reduces the impact force of the impact column on the test material body to form a force unloading effect, thereby reducing the accuracy of the test. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a building material impact resistance testing device, which has the advantages of multi-directional impact on materials to increase the test range, while keeping the test material suspended and fixed to prevent rebound and improve test accuracy.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a building material impact resistance testing device, comprising a main frame, wherein a linkage mechanism is arranged in the middle of the main frame;

[0007] The linkage mechanism comprises a support frame rotatably arranged on both sides of the inner wall of the main frame, an installation groove is opened on the upper end surface of the support frame, a transverse screw is rotatably arranged in the installation groove, and a first straight gear is rotatably arranged on one side of the transverse screw in the installation groove, the linkage mechanism also comprises a linkage gear fixedly arranged in the middle of the surface of the transverse screw, the tooth surface of the linkage gear abuts against the first straight gear, movable rods rotatably connected to the main frame are fixedly arranged on both sides of the outer wall of the support frame, and a self-locking motor connected to the movable rod is fixedly arranged on one side of the outer wall of the main frame;

[0008] Two fixing mechanisms with the same structure are arranged in the installation groove, and the two fixing mechanisms include a moving shell movably arranged in the installation groove, a longitudinal screw is rotatably arranged inside the groove on one side of the moving shell, a rotating rod is fixedly arranged at the bottom of the longitudinal screw, a clamping plate is threadedly arranged on the surface of the longitudinal screw, and a pressure sensor is fixedly arranged on one side of the surface of the clamping plate, the fixing mechanism also includes a second motor fixedly arranged in the moving shell, the output end of the second motor passes through the bottom wall and is fixedly connected to the longitudinal screw, an electromagnetic clutch is connected between the longitudinal screw and the rotating rod, and a second bevel gear is fixedly arranged on the surface of the rotating rod close to the electromagnetic clutch;

[0009] A second spur gear meshing with the first spur gear is rotatably arranged on the inner wall of the groove of the movable housing, and a first helical gear meshing with the second helical gear is fixedly arranged on one side of the surface of the second spur gear.

[0010] The impact mechanism includes a fixed seat movably arranged on the top of the inner wall of the main frame, a rotating shaft is rotatably arranged at the bottom of the fixed seat, a storage shell is fixed on the surface of the rotating shaft, and an impact hammer is inserted at the bottom of the storage shell.

[0011] Preferably, the impact mechanism further comprises a third motor fixedly mounted on one side of the surface of the fixing seat, and an output end of the third motor passes through the side wall and is fixedly connected to the rotating shaft.

[0012] Preferably, a fixing hole is provided on one side of the outer wall of the storage shell, a plug is inserted into the fixing hole, and a plurality of slots are provided at the top of the impact hammer located in the storage shell.

[0013] Preferably, a control console for controlling the mechanism is fixedly provided on the top of the main frame.

[0014] Preferably, lifting mechanisms connected to the fixing seats are fixedly provided on both sides of the inner wall of the main frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention drives the transverse screw to rotate by linking the longitudinal screw with the first straight gear, so that the two groups of clamping plates can fix the material plate in multiple directions. At the same time, the two groups of clamping plates are located in the middle of the longitudinal screw to keep the material plate in a suspended fixed state, preventing the material plate from rebounding when it is hit, thereby improving the test accuracy.

[0017] 2. The present invention drives the support frame to rotate back and forth through the movable rod, so that the two sets of clamping plates drive the material plate to swing, and cooperates with the lifting mechanism and the rotating shaft to drive the impact hammer to perform vertical impact and swing impact, so as to impact all impact points on the central longitudinal path of the material plate surface and the impact points on both sides of the front and rear ends of the material plate, thereby improving the test range of the impact resistance test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0019] Figure 2 It is a front structural diagram of the present invention;

[0020] Figure 3 It is an exploded view of the fixing mechanism of the present invention;

[0021] Figure 4 It is a cross-sectional view of the linkage mechanism of the present invention;

[0022] Figure 5 It is an exploded diagram of the impact mechanism of the present invention;

[0023] Figure 6 It is a connection diagram of the fixing mechanism and linkage mechanism of the present invention.

[0024] In the figure: 1. Main frame;

[0025] 2. linkage mechanism; 21. support frame; 22. linkage gear; 23. transverse lead screw; 24. first straight gear; 25. self-locking motor; 26. mounting slot; 27. movable rod;

[0026] 3. Fixing mechanism; 31. Moving housing; 32. Second spur gear; 33. First bevel gear; 34. Rotating rod; 35. Second bevel gear; 36. Electromagnetic clutch; 37. Second motor; 38. Longitudinal lead screw; 39. Clamping plate;

[0027] 4. Impact mechanism; 41. Fixed seat; 42. Third motor; 43. Rotating shaft; 44. Storage housing; 45. Plug; 46. Fixing hole; 47. Slot; 48. Impact hammer;

[0028] 5. Control panel; 6. Lifting mechanism. DETAILED DESCRIPTION

[0029] 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.

[0030] like Figures 1 to 6 As shown, the present invention provides a building material impact resistance testing device, including a main frame 1, the main frame 1 is U-shaped as a whole, and a control console 5 is fixedly provided on one side of the top of the main frame 1, and the control console 5 is divided into two parts: a display screen and a control button.

[0031] like Figures 1 to 3 As shown, the linkage mechanism 2 includes a support frame 21 rotatably arranged on the U-shaped inner surface of the main frame 1, and two movable rods 27 are fixedly connected to the outer surface of the support frame 21 on both sides, and the ends of the two movable rods 27 away from the support frame 21 are rotatably connected to the U-shaped inner wall of the main frame 1, and a self-locking motor 25 is fixedly provided on the side of the outer surface of the main frame 1 aligned with the movable rod 27 by screws, and the output shaft of the self-locking motor 25 movably passes through the main frame 1 so as to be fixedly connected to a relatively close movable rod 27, the support frame 21 is U-shaped as a whole, and the U-shaped bottom surface of the support frame 21 is provided with an installation groove 26 inwardly, and the first spur gears 24 are rotatably connected to the two ends of the installation groove 26, and a transverse lead screw 23 is rotatably connected to one side of the first spur gear 24 in the installation groove 26, the linkage mechanism 2 also includes a linkage gear 22 welded and fixed to the middle surface of the transverse lead screw 23, and the tooth surface of the linkage gear 22 is meshed and abutted with the tooth surface of the first spur gear 24.

[0032] like Figure 3 , 4 As shown in Figure 6, the two fixing mechanisms 3 include two mobile shells 31 that are laterally movably connected in the grooves of the mounting grooves 26. Threaded holes are provided at the bottoms of the two mobile shells 31, and the two mobile shells 31 are threadedly connected to the surface of the horizontal lead screw 23 through the threaded holes. Grooves are provided inwardly on opposite sides of the two mobile shells 31, and the bottoms of the grooves penetrate the side walls to form a through groove in the direction. A second spur gear 32 is rotatably connected to the middle of the inner wall of the groove of the mobile shell 31, and the second spur gear 32 is meshed and abutted with the first spur gear 24. A first bevel gear 33 is fixedly provided on the surface of the second spur gear 32 on one side close to the linkage gear 22.

[0033] like Figure 3 , 4As shown in Figure 6, a longitudinal screw 38 is rotatably connected to the top of the groove of the moving shell 31, and two clamping plates 39 facing each other are threadedly connected to the surface of the longitudinal screw 38, and the inner walls of the two clamping plates 39 are fixedly provided with pressure sensors 7, an electromagnetic clutch 36 is inserted into the bottom of the longitudinal screw 38, a rotating rod 34 is inserted into the socket at the bottom of the electromagnetic clutch 36, and the end of the rotating rod 34 away from the electromagnetic clutch 36 is rotatably connected to the bottom of the groove of the moving shell 31, a second bevel gear 35 is fixedly provided on the end of the surface of the rotating rod 34 close to the electromagnetic clutch 36, and the tooth surface of the second bevel gear 35 is meshed and abutted with the tooth surface of the first bevel gear 33, a cavity is opened inside the moving shell 31 at the top of the longitudinal screw 38, and the fixing mechanism 3 also includes a second motor 37 fixed by screws in the cavity of the moving shell 31, and the output shaft of the second motor 37 movably penetrates the moving shell 31 so as to be fixedly connected to the top of the longitudinal screw 38.

[0034] It should be noted that the width of the through slot of the movable housing 31 is greater than the diameter of the first spur gear 24, so that when the movable housing 31 moves along the transverse screw 23, the first spur gear 24 passes through the through slot to prevent misalignment. At the same time, the horizontal installation position of the rotating rod 34 is located between the first spur gear 24 and the transverse screw 23, and a gap of 3 to 4 cm is reserved to prevent collision. The thread density on the surface of the longitudinal screw 38 is greater than that of the transverse screw 23, so that the movement time of the object on the surface of the longitudinal screw 38 is greater than that of the transverse screw 23, and the types of the transverse screw 23 and the longitudinal screw 38 are both set to bidirectional screws, so that the two movable housings 31 on the surface of the transverse screw 23 and the two clamping plates 39 on the surface of the longitudinal screw 38 move toward or oppositely.

[0035] Reference Figure 1 , 2As shown in Figure 5, grooves are provided inwardly on both sides of the inner wall of the main frame 1, and a lifting mechanism 6 is fixed in the groove. The lifting plate of the lifting mechanism 6 is normally located at the top of the inner wall of the main frame 1. The impact mechanism 4 includes a fixed seat 41 fixed between the two lifting plates. The bottom of the fixed seat 41 is grooved inwardly, and a rotating shaft 43 is rotatably connected in the groove. At the same time, the impact mechanism 4 also includes a third motor 42 fixed on the outer surface of the fixed seat 41 and aligned with the rotating shaft 43. The output shaft of the third motor 42 movably passes through the fixed seat 41 so as to be fixedly connected to one end of the rotating shaft 43 through a coupling. A storage shell 4 is fixed on the surface of the rotating shaft 43. 4. A telescopic opening is provided inside the storage shell 44 and the opening faces downward. A fixing hole 46 is provided on one side of the storage shell 44, and the fixing hole 46 penetrates the side wall to communicate with the inside of the storage shell 44. A plug 45 is movably inserted in the fixing hole 46, and the insertion end width of the plug 45 is consistent with the width of the fixing hole 46. An impact hammer 48 is movably inserted in the telescopic opening of the storage shell 44. Under normal conditions, the hammer body of the impact hammer 48 is vertically downward, and the telescopic part of the impact hammer 48 is located in the telescopic opening of the storage shell 44, and a plurality of slots 47 are provided on the surface of the telescopic part, and the width of the slots 47 is consistent with the width of the fixing hole 46.

[0036] It should be noted that the width of the material plate used for testing must be greater than the sum of the widths of the two clamping plates 39 and the vertical body of the impact hammer 48, so that when the clamping plates 39 complete the fixation of both sides of the material plate, the middle surface of the material plate is exposed to the outside and collides with the impact hammer 48.

[0037] Among them, the device also includes a self-locking motor 25, an electromagnetic clutch 36, a second motor 37, a third motor 42, an impact hammer 48, a pressure sensor 7 and a control console 5 for controlling various mechanisms, electrical systems and control systems, all of which are existing technologies, and their structural principles will not be repeated.

[0038] Principle and process of the present invention:

[0039] When using this device, firstly, the two sides of the material plate to be tested are placed on the gaps of the two clamping plates 39 located below, and the material plate is kept aligned with the center of the main frame 1. Then, the personnel sends a signal through the debugging control console 5 to control the operation of the two second motors 37. The output shafts of the two second motors 37 drive the two longitudinal screws 38 to rotate. As the two longitudinal screws 38 rotate, the two groups of clamping plates 39 located above and below are driven one by one to move toward each other.

[0040] At the same time, the longitudinal lead screw 38 drives the inner ring of the electromagnetic clutch 36 to rotate. The electromagnetic clutch 36 is normally energized, so that the two internal rotating shafts are attracted and connected, so that the electromagnetic clutch 36 transmits the rotational force of the longitudinal lead screw 38 to the rotating rod 34, and the rotating rod 34 drives the second bevel gear 35 to rotate. The second bevel gear 35 meshes with the first bevel gear 33 and rotates synchronously. The first bevel gear 33 drives the second spur gear 32 to rotate, and then the second spur gear 32 transmits the rotational force to the first spur gear 24. As the first spur gear 24 rotates, it drives the linkage gear 22, and finally rotates the transverse lead screw 23, so that the two movable shells 31 on the surface of the transverse lead screw 23 are translated toward each other, driving the two sets of clamping plates 39 on the left and right sides to move toward each other, thereby clamping the side surface of the material plate.

[0041] When the two groups of clamping plates 39 on the left and right sides are fixedly abutted against the side surface of the material plate on opposite sides to form a lateral fixation, the material plate squeezes the trigger end of the pressure sensor 7 so that the pressure sensor 7 sends an electrical signal to the control system, and then the control system sends a signal to change the two rotating shafts in the electromagnetic clutch 36 to a disconnected state, and the longitudinal lead screw 38 stops driving the rotating rod 34, so that the lateral position of the clamping plates 39 on the left and right sides remains stationary, and then with the continuous rotation of the longitudinal lead screw 38, the relative end faces of the two groups of clamping plates 39 located above and below are finally abutted against the upper and lower ends of the material plate, and at the same time, the concave shape of the clamping plate 39 is used to fix the front and rear ends of the material plate, thereby forming an all-round fixation of the front and back, upper and lower, and four side surfaces of the material plate, and at this time, the center of the material plate is aligned with the middle of the longitudinal lead screw 38, so that it remains in a suspended state.

[0042] When the material plate is fixed, the personnel debugs the control panel 5 to make the lifting mechanism 6 descend quickly, thereby driving the fixing seat 41 to descend synchronously, and as the fixing seat 41 descends, the storage shell 44 is driven, so that the impact hammer 48 moves vertically downward, and finally collides with the upper end surface of the material plate, so as to perform an impact resistance test. At the same time, the debugging control panel 5 starts the third motor 42, and the third motor 42 drives the rotating shaft 43 to reciprocate, and the rotation cycle is maintained at 180°, and the rotating shaft 43 drives the storage shell 44 to rotate, so that the impact hammer 48 is in a swinging state, and cooperates with the self-locking The motor 25 drives the movable rod 27 to rotate, causing the entire support frame 21 to rotate back and forth 180°, thereby extending from the center point of the material plate. Impact tests can be performed on all impact points on the longitudinal path of the center of the material plate, as well as the front and rear ends of the material plate. Before controlling the impact hammer 48 to impact, the plug 45 can be inserted, and the impact hammer 48 can be pulled out of the storage shell 44, and then the plug 45 can be inserted through the fixing hole 46 to the current slot 47 for fixing, thereby shortening the distance between the impact hammer 48 and the material plate, which can be adjusted according to material plates of different sizes.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] While 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 invention, the scope of which is determined by the appended claims and their equivalents.

Claims

1. A device for testing the impact resistance of building materials, Features: It comprises a main frame (1), wherein a linkage mechanism (2) is arranged in the middle of the main frame (1); The linkage mechanism (2) comprises a support frame (21) rotatably arranged on both sides of the inner wall of the main frame (1), the upper end surface of the support frame (21) is provided with a mounting groove (26), a transverse screw (23) is rotatably arranged in the mounting groove (26), and a first straight gear (24) is rotatably arranged on one side of the transverse screw (23) located in the mounting groove (26), the linkage mechanism (2) also comprises a linkage gear (22) fixedly arranged in the middle of the surface of the transverse screw (23), the tooth surface of the linkage gear (22) abuts against the first straight gear (24), movable rods (27) rotatably connected to the main frame (1) are fixedly arranged on both sides of the outer wall of the support frame (21), and a self-locking motor (25) connected to the movable rod (27) is fixedly arranged on one side of the outer wall of the main frame (1); Two fixing mechanisms (3) of the same structure are arranged in the installation groove (26), and the two fixing mechanisms (3) include a moving housing (31) movably arranged in the installation groove (26), a longitudinal lead screw (38) being rotatably arranged in a groove on one side of the moving housing (31), a rotating rod (34) being fixedly arranged at the bottom of the longitudinal lead screw (38), a clamping plate (39) being threadedly arranged on the surface of the longitudinal lead screw (38), and a pressure sensor (7) being fixedly arranged on one side of the surface of the clamping plate (39), and the fixing mechanism (3) also includes a second motor (37) fixedly arranged in the moving housing (31), an output end of the second motor (37) passing through the bottom wall and fixedly connected to the longitudinal lead screw (38), an electromagnetic clutch (36) being connected between the longitudinal lead screw (38) and the rotating rod (34), and a second bevel gear (35) being fixedly arranged on the surface of the rotating rod (34) at one end close to the electromagnetic clutch (36); A second spur gear (32) meshing with the first spur gear (24) is rotatably disposed on the inner wall of the groove of the movable housing (31); a first bevel gear (33) meshing with the second bevel gear (35) is fixedly disposed on one side of the surface of the second spur gear (32); The impact mechanism (4) comprises a fixed seat (41) movably arranged on the top of the inner wall of the main frame (1), a rotating shaft (43) being rotatably arranged at the bottom of the fixed seat (41), a storage shell (44) being fixedly arranged on the surface of the rotating shaft (43), and an impact hammer (48) being inserted and arranged at the bottom of the storage shell (44).

2. The building material impact resistance testing device according to claim 1, Features: The impact mechanism (4) further comprises a third motor (42) fixedly mounted on one side of the surface of the fixing seat (41), wherein an output end of the third motor (42) passes through the side wall and is fixedly connected to the rotating shaft (43).

3. The building material impact resistance testing device according to claim 1, Features: A fixing hole (46) is provided on one side of the outer wall of the storage shell (44), a plug (45) is inserted into the fixing hole (46), and a plurality of slots (47) are provided on the top of the impact hammer (48) located in the storage shell (44).

4. The building material impact resistance testing device according to claim 1, Features: A control console (5) for controlling the mechanism is fixedly provided on the top of the main frame (1).

5. The building material impact resistance testing device according to claim 1, Features: Lifting mechanisms (6) connected to the fixing seats (41) are fixedly provided on both sides of the inner wall of the main frame (1).

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