Cement mortar strength measuring device
By designing a cement grit strength measurement device, the clamping mechanism of fixed arc plates and movable arc plates is used to solve the fixing problem of cement grits of different specifications during measurement, and stable clamping and accurate measurement are achieved.
Patent Information
- Application Number
- CN202421415115.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-20
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-06-20
AI Technical Summary
When measuring the strength of cement sand made of different specifications, cement sand of different sizes needs to be fixed to prevent it from falling from the platform to be tested and affecting the measurement work.
A cement rubber sand strength measurement device is designed, including a measuring table, a detection chamber, a clamping mechanism and a moving mechanism. Through the cooperation of the fixed arc plate and the moving arc plate, the adjustment of the telescopic holes and fixed blocks can be achieved to stabilize the clamping of cement rubber sand of different shapes, and the strength measurement is performed through the stamping machine.
The stable fixation of cement sand of different shapes is achieved, ensuring the accuracy and reliability of the measurement process, avoiding the phenomenon of cement sand leaving the platform, and improving the credibility of the measurement results.
Smart Images
Figure CN223139235U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cement production, in particular to a device for measuring the strength of cement mortar. Background Art
[0002] The method for testing the strength of cement mortar is also called the dry shrinkage test method of cement mortar, which is used to evaluate the mechanical properties of cement, that is, to measure the strength of cement. The strength of cement is to mix cement and standard sand in a ratio of 1:3, add a specified amount of water, make specimens according to the specified method, and cure them according to the specified method, and then measure their compressive strength and flexural strength at 3d and 28d respectively. The strength grade of cement is determined according to the measurement results.
[0003] However, the sizes of cement mortars made according to different specifications are different. When measuring the strength of cement mortars of different sizes, it is necessary to fix the cement mortars of different sizes to prevent them from detaching from the platform to be tested, which will affect the measurement of the strength of cement mortars.
[0004] Based on this, the utility model designs a device for measuring the strength of cement mortar to solve the above problems. Content of the Utility Model
[0005] The purpose of the utility model is to provide a device for measuring the strength of cement mortar to solve the problem that the sizes of cement mortars made according to different specifications are different. When measuring the strength of cement mortars of different sizes, it is necessary to fix the cement mortars of different sizes to prevent them from detaching from the platform to be tested, which will affect the measurement of the strength of cement mortars.
[0006] To achieve the above purpose, the utility model provides the following technical solutions:
[0007] The device for measuring the strength of cement mortar includes a measuring table, a detection cavity is opened on the measuring table, a detection block for placing cement mortar is arranged on the bottom surface of the detection cavity, a clamping mechanism is arranged on the detection cavity, the clamping mechanism includes a fixed arc plate and a moving arc plate, the fixed arc plate and the moving arc plate are respectively located on both sides of the detection block, the fixed arc plate is fixedly installed on the bottom surface of the detection cavity, the moving arc plate is slidably connected to the detection cavity, a moving mechanism is connected to the side of the moving arc plate away from the detection block, and the moving mechanism drives the moving arc plate to move towards the fixed arc plate to fix the cement mortar on the detection block;
[0008] Two telescopic holes are symmetrically arranged on the fixed arc plate and the moving arc plate respectively, a fixed block is slidably connected in the telescopic hole, and the fixed block slides along the telescopic hole to adjust the clamping part according to the shape of the cement mortar to meet the requirements of clamping cement mortars of different shapes.
[0009] As a further solution of the utility model: fixed cavities perpendicular to and communicating with the telescopic holes are formed in the fixed arc plate and the movable arc plate, and a fixing mechanism for fixing the fixed block is arranged in the fixed cavities. The fixing mechanism includes a fixing plate, a lead screw, a limiting plate and a turntable. Among them: the fixing plate is slidably connected in the fixed cavity and is used for fixing the fixed block in place after adjustment; the lead screw is threadedly connected to the fixed arc plate and the movable arc plate, and one end thereof is inserted into the fixing plate and fixedly connected to the limiting plate, and the limiting plate is rotatably connected in the fixing plate; the turntable is fixedly installed at the free end of the lead screw and is used for driving the lead screw.
[0010] As a further solution of the utility model: a tooth groove is formed on the top surface of the fixed block, a rack is arranged on the bottom surface of the fixing plate, the rack is meshed with the tooth groove, and the fixing plate drives the rack to be meshed with the tooth groove so as to fix the fixed block in place after adjustment into the telescopic hole; the length of the limiting plate is greater than that of the lead screw, and a fixing pad is arranged at the end of the fixed block close to the cement mortar.
[0011] As a further solution of the utility model: the moving mechanism includes a housing, a moving cavity, a moving block and a moving rod. Among them: the housing is fixedly installed on the bottom surface of the detection cavity, and the moving cavity is formed in the housing; the moving block is slidably connected in the moving cavity and is used for driving the moving rod; the moving rod is fixedly installed on the side surface of the moving block, and its free end extends out of the moving cavity and is fixedly connected to the movable arc plate, and the moving rod drives the movable arc plate to approach or move away from the fixed arc plate so as to fix the cement mortar on the detection block.
[0012] As a further solution of the utility model: a driving cavity is formed in the housing, and a driving mechanism for driving the moving block is arranged in the driving cavity. The driving mechanism includes a driving shaft, a driving wheel, a driven wheel, a driven shaft and a threaded rod. Among them: the driving shaft is rotatably connected in the driving cavity, and one end thereof extends out of the driving cavity, the driving wheel is sleeved on the driving shaft and is used for driving the driven wheel; the driven wheels are located on both sides of the driving wheel and are meshed with the driving wheel; the two driven wheels are rotatably connected in the driving cavity through the driven shaft, the threaded rod is fixedly installed at the end of the driven shaft close to the moving block and extends into the moving cavity; two threaded sleeves corresponding to and threadedly connected to the threaded rod are arranged on the moving block, and the threaded rod drives the moving block to expand and contract along the moving cavity through the threaded sleeves.
[0013] As a further solution of the utility model: a driving disc is fixedly connected to the free end of the driving shaft, the driving disc is used to drive the driving shaft, a plurality of uniformly distributed locking holes are formed in the driving disc, a base corresponding to any of the locking holes is arranged on the outer shell, and a screw passes through any of the locking holes and is inserted into the base to fix the driving disc in place after rotation.
[0014] As a further solution of the utility model: a punching machine, a lifting plate and a guiding component are further arranged in the detection cavity, a pressure block is arranged below the lifting plate, the detection block is located directly below the pressure block, and the output end of the punching machine drives the lifting plate to lift, so as to drive the pressure block to approach or move away from the detection block to measure the strength of the cement mortar fixed to the detection block; the guiding component is located on both sides of the punching machine and is used to maintain the stability of the lifting process of the lifting plate.
[0015] As a further solution of the utility model: a controller is further arranged on the measuring table, the controller is electrically connected to the punching machine and the detection block, and the detection block is used to collect pressure values in real time.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] In the utility model, after the cement mortar to be detected is placed on the detection block, the punching machine drives the lifting plate to descend, and the lifting plate squeezes the cement mortar through the pressure block to measure the strength of the cement mortar.
[0018] In the utility model, when fixing the fixed arc plate and the moving arc plate, the fixed block contacts with the cement mortar and fixes the cement mortar; when the size of the cement mortar changes, the fixed block is driven to slide along the telescopic hole to adjust the position of the fixed block to the optimal position to clamp cement mortar of different shapes and meet the requirement of clamping cement mortar of different shapes.
[0019] In the utility model, before driving the fixed block to slide along the telescopic hole, the turntable drives the lead screw to spiral upward, the lead screw drives the fixed plate to rise along the fixed cavity through the limiting plate, and the fixed plate drives the rack to disengage from the tooth groove, and then the fixed block can be flexibly driven to slide along the telescopic hole to meet the requirement of clamping cement mortar of different shapes. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a three-dimensional structural diagram of the utility model;
[0021] Figure 2 is a top view of the utility model;
[0022] Figure 3 is a three-dimensional structural diagram of the fixed arc plate in the utility model;
[0023] Figure 4 Schematic structural diagram of the fixed arc plate in the present utility model;
[0024] Figure 5 is Figure 2 Enlarged view of part A in
[0025] In the figure: 1, measuring table; 11, detection cavity; 12, controller; 2, punching machine; 3, lifting plate; 4, guiding component; 5, detection block; 6, clamping mechanism; 61, fixed arc plate; 62, moving arc plate; 63, telescopic hole; 64, fixed block; 65, fixed pad; 66, tooth groove; 67, fixed cavity; 7, moving mechanism; 71, housing; 72, moving cavity; 73, moving block; 74, moving rod; 75, threaded sleeve; 76, driving cavity; 8, driving mechanism; 81, driving shaft; 82, driving wheel; 83, driven wheel; 84, driven shaft; 85, threaded rod; 86, driving disc; 87, locking hole; 88, base; 89, screw; 9, fixing mechanism; 91, fixing plate; 92, rack; 93, lead screw; 94, limiting plate; 95, turntable. Specific embodiments
[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0027] This embodiment;
[0028] For the cement mortar strength measuring device, please refer to Figures 1 - 5 , which includes a measuring table 1. A detection cavity 11 is opened on the measuring table 1. A detection block 5 for placing cement mortar is provided on the bottom surface of the detection cavity 11. A punching machine 2, a lifting plate 3 and a guiding component 4 are also provided in the detection cavity 11. A pressure block is provided below the lifting plate 3. The detection block 5 is located directly below the pressure block. The output end of the punching machine 2 drives the lifting plate 3 to lift and lower, so as to drive the pressure block to approach or move away from the detection block 5, and measure the strength of the cement mortar fixed to the detection block 5.
[0029] Through the above technical solution, after the cement mortar to be detected is placed on the detection block 5 in the present utility model, the punching machine 2 drives the lifting plate 3 to descend, and the lifting plate 3 squeezes the cement mortar through the pressure block to measure the strength of the cement mortar.
[0030] In some examples, as shown in reference to Figures 1 - 5 , the guiding component 4 is located on both sides of the punching machine 2 and is used to maintain the stability of the lifting process of the lifting plate 3.
[0031] Through the above technical solution, in the present utility model, the guiding assembly 4 is located on both sides of the stamping machine 2, which can maintain the stability of both sides of the lifting plate 3, so as to maintain the stability of the lifting process of the lifting plate 3, so that the pressure block can stably extrude the cement mortar.
[0032] In some examples, referring to Figures 1 - 5 As shown, a controller 12 is further provided on the measuring table 1. The controller 12 is electrically connected to the stamping machine 2 and the detection block 5. The detection block 5 is used to collect pressure values in real time.
[0033] Through the above technical solution, in the present utility model, the controller 12 can control the operation of the stamping machine 2 so that the pressure block can stably extrude the cement mortar; the controller 12 can be used to control the detection block 5 so that the detection block 5 collects pressure values in real time. The pressure when the cement mortar cracks is the value to be measured.
[0034] In some examples, referring to Figures 1 - 5 As shown, a clamping mechanism 6 is provided on the detection cavity 11. The clamping mechanism 6 includes a fixed arc plate 61 and a movable arc plate 62. The fixed arc plate 61 and the movable arc plate 62 are respectively located on both sides of the detection block 5. The fixed arc plate 61 is fixedly installed on the bottom surface of the detection cavity 11. The movable arc plate 62 is slidably connected to the detection cavity 11. A moving mechanism 7 is connected to the side of the movable arc plate 62 away from the detection block 5. The moving mechanism 7 drives the movable arc plate 62 to move towards the fixed arc plate 61 to fix the cement mortar to the detection block 5.
[0035] Through the above technical solution, after the cement mortar to be detected is placed on the detection block 5 in the present utility model, the moving mechanism 7 drives the movable arc plate 62 to move towards the fixed arc plate 61 to fix the cement mortar to the detection block 5; when the cement mortar cracks, the moving mechanism 7 drives the movable arc plate 62 in the reverse direction to move away from the fixed arc plate 61 to facilitate the cleaning of the cracked cement mortar.
[0036] In some examples, referring to Figures 1 - 5As shown in the figure, a moving mechanism 7 for driving the moving arc plate 62 is provided in the detection cavity 11. The moving mechanism 7 includes a housing 71. A driving cavity 76 is formed in the housing 71. A driving mechanism 8 for driving the moving block 73 is provided in the driving cavity 76. The driving mechanism 8 includes a driving shaft 81, a driving wheel 82, a driven wheel 83, a driven shaft 84, and a threaded rod 85. Among them: The driving shaft 81 is rotatably connected in the driving cavity 76, and one end extends out of the driving cavity 76. The driving wheel 82 is sleeved on the driving shaft 81 and is used to drive the driven wheel 83; The driven wheels 83 are located on both sides of the driving wheel 82 and are meshed with the driving wheel 82; The two driven wheels 83 are rotatably connected in the driving cavity 76 through the driven shaft 84. The threaded rod 85 is fixedly installed at the end of the driven shaft 84 close to the moving block 73 and extends into the moving cavity 72; Two threaded sleeves 75 corresponding to the threaded rod 85 and threadedly connected are provided on the moving block 73. The threaded rod 85 drives the moving block 73 to expand and contract along the moving cavity 72 through the threaded sleeves 75.
[0037] Through the above technical solution, after placing the cement mortar to be detected on the detection block 5 in the present utility model, the driving shaft 81 is driven. The driving shaft 81 can drive the driving wheel 82 to rotate. The driving wheel 82 drives the two driven shafts 84 to rotate synchronously through the two driven wheels 83. The two driven shafts 84 drive the two threaded rods 85 to rotate synchronously. The two threaded rods 85 drive the moving block 73 to move along the moving cavity 72 through the threaded sleeves 75, so as to realize the mutual approach or separation of the moving arc plate 62 and the fixed arc plate 61; The driving wheel 82 is larger than the driven wheel 83, so a very small force can be applied to drive the two driven wheels 83 to rotate synchronously to drive the moving arc plate 62; The two driven wheels 83 rotate synchronously, which can make the moving block 73 move stably along the moving cavity 72 without jamming.
[0038] In some examples, referring to Figures 1 - 5 As shown in the figure, the moving mechanism 7 further includes a moving cavity 72, a moving block 73, and a moving rod 74. Among them: The housing 71 is fixedly installed on the bottom surface of the detection cavity 11. The moving cavity 72 is formed in the housing 71; The moving block 73 is slidably connected in the moving cavity 72 and is used to drive the moving rod 74; The moving rod 74 is fixedly installed on the side surface of the moving block 73, and the free end extends out of the moving cavity 72 and is fixedly connected to the moving arc plate 62. The moving rod 74 drives the moving arc plate 62 to approach or separate from the fixed arc plate 61 to fix the cement mortar to the detection block 5.
[0039] Through the above technical solution, when the moving block 73 slides along the moving cavity 72 in the present utility model, the moving arc plate 62 is driven to approach or separate from the fixed arc plate 61 through the moving rod 74, which is convenient for fixing the cement mortar to the detection block 5.
[0040] In some examples, referring to Figures 1 - 5As shown in the figure, a driving disk 86 is fixedly connected to the free end of the driving shaft 81. The driving disk 86 is used to drive the driving shaft 81. A number of uniformly distributed locking holes 87 are formed on the driving disk 86. A base 88 corresponding to any of the locking holes 87 is provided on the outer shell 71. A screw 89 passes through any of the locking holes 87 and is inserted into the base 88 to fix the driving disk 86 that has rotated into place.
[0041] Through the above technical solution, in the present utility model, the driving disk 86 can be used to drive the driving shaft 81 to rotate; when the moving arc plate 62 moves to an appropriate position, the screw 89 is passed through the locking hole 87 corresponding to the base 88 and inserted into the base 88 to fix the driving disk 86 that has rotated into place, thereby fixing the position of the moving arc plate 62 and maintaining the stability of the cement mortar.
[0042] In some examples, referring to Figures 1 - 5 As shown in the figure, two telescopic holes 63 are symmetrically provided on the fixed arc plate 61 and the moving arc plate 62 respectively. A fixed block 64 is slidably connected in the telescopic hole 63. The fixed block 64 slides along the telescopic hole 63 to adjust the clamping part according to the shape of the cement mortar, so as to meet the requirement of clamping cement mortar of different shapes.
[0043] Through the above technical solution, in the present utility model, the fixed arc plate 61 and the moving arc plate 62 contact the cement mortar through the fixed block 64 and fix the cement mortar; when the size of the cement mortar changes, the fixed block 64 is driven to slide along the telescopic hole 63 to adjust the position of the fixed block 64 to the optimal position to clamp cement mortar of different shapes and meet the requirement of clamping cement mortar of different shapes.
[0044] In some examples, referring to Figures 1 - 5 As shown in the figure, a fixed cavity 67 perpendicular to and communicating with the telescopic hole 63 is formed on the fixed arc plate 61 and the moving arc plate 62. A fixing mechanism 9 for fixing the fixed block 64 is provided in the fixed cavity 67. The fixing mechanism 9 includes a fixing plate 91, a lead screw 93, a limiting plate 94 and a turntable 95, where: the fixing plate 91 is slidably connected in the fixed cavity 67 and is used to fix the fixed block 64 adjusted in place; the lead screw 93 is threadedly connected to the fixed arc plate 61 and the moving arc plate 62, and one end is inserted into the fixing plate 91 and fixedly connected to the limiting plate 94. The limiting plate 94 is rotatably connected in the fixing plate 91; the turntable 95 is fixedly installed at the free end of the lead screw 93 and is used to drive the lead screw 93.
[0045] In some examples, referring to Figures 1 - 5As shown, a tooth groove 66 is formed on the top surface of the fixed block 64, and a rack 92 is provided on the bottom surface of the fixed plate 91. The rack 92 meshes with the tooth groove 66. The fixed plate 91 drives the rack 92 to mesh with the tooth groove 66 to fix the adjusted fixed block 64 into the telescopic hole 63. The length of the limiting plate 94 is greater than that of the lead screw 93, and a fixed pad 65 is provided at the end of the fixed block 64 close to the cement mortar.
[0046] Through the above technical solution, before driving the fixed block 64 to slide along the telescopic hole 63 in the present utility model, the lead screw 93 is driven to spiral upward by the turntable 95. The lead screw 93 drives the fixed plate 91 to rise along the fixed cavity 67 through the limiting plate 94, and the fixed plate 91 drives the rack 92 to disengage from the tooth groove 66. Then, the fixed block 64 can be flexibly driven to slide along the telescopic hole 63 to meet the requirement of clamping cement mortar of different shapes. When the fixed block 64 moves in place, the turntable 95 is rotated in the reverse direction. The turntable 95 drives the lead screw 93 to screw in. The lead screw 93 drives the fixed plate 91 to descend along the fixed cavity 67 through the limiting plate 94. The fixed plate 91 drives the rack 92 to move towards the tooth groove 66 until it meshes with the tooth groove 66 to fix the fixed block 64 into the telescopic hole 63 to achieve stable clamping of the cement mortar. The setting that the length of the limiting plate 94 is greater than that of the lead screw 93 can prevent the lead screw 93 from disengaging from the fixed plate 91. The limiting plate 94 is rotatably connected to the fixed plate 91, so it does not rotate itself when the lead screw 93 rotates.
[0047] The working principle of the present utility model is:
[0048] First, after placing the cement mortar to be detected on the detection block 5, then rotate the driving disk 86. The driving disk 86 drives the driving wheel 82 to rotate through the driving shaft 81. The driving wheel 82 drives the two driven wheels 83 to drive the two driven shafts 84 to rotate synchronously through the two driven wheels 83. Then the two driven shafts 84 drive the two threaded rods 85 to rotate synchronously. The two threaded rods 85 drive the moving block 73 to move along the moving cavity 72 through the threaded sleeve 75. The moving block 73 drives the moving arc plate 62 to approach the fixed arc plate 61 through the moving rod 74. Finally, the four fixed blocks 64 press against the cement mortar to fix the cement mortar on the detection block 5. Rotating the driving disk 86 in the reverse direction can make the moving arc plate 62 move away from the fixed arc plate 61.
[0049] The above is only a preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, making equivalent replacements or changes should be covered within the protection scope of the present utility model.
Claims
1. Cement mortar strength testing device, including a testing table (1), characterized in that: A detection cavity (11) is provided on the measurement table (1). A detection block (5) for placing cement mortar is provided on the bottom surface of the detection cavity (11). A clamping mechanism (6) is provided on the detection cavity (11). The clamping mechanism (6) includes a fixed arc plate (61) and a movable arc plate (62). The fixed arc plate (61) and the movable arc plate (62) are respectively located on both sides of the detection block (5). The fixed arc plate (61) is fixedly installed on the bottom surface of the detection cavity (11). The movable arc plate (62) is slidably connected to the detection cavity (11). A moving mechanism (7) is connected to the side surface of the movable arc plate (62) away from the detection block (5). The moving mechanism (7) drives the movable arc plate (62) to move towards the fixed arc plate (61) to fix the cement mortar onto the detection block (5). Two telescopic holes (63) are symmetrically provided on the fixed arc plate (61) and the movable arc plate (62) respectively. A fixed block (64) is slidably connected in the telescopic hole (63). The fixed block (64) slides along the telescopic hole (63) to adjust the clamping part according to the shape of the cement mortar, meeting the requirement of clamping cement mortar of different shapes.
2. The cement mortar strength measuring device according to claim 1, characterized in that: A fixed cavity (67) perpendicular to and communicating with the telescopic hole (63) is provided on the fixed arc plate (61) and the movable arc plate (62). A fixing mechanism (9) for fixing the fixed block (64) is provided in the fixed cavity (67). The fixing mechanism (9) includes a fixing plate (91), a lead screw (93), a limiting plate (94) and a turntable (95), where: The fixing plate (91) is slidably connected in the fixed cavity (67) and is used for fixing the fixed block (64) adjusted in place. The lead screw (93) is threadedly connected to the fixed arc plate (61) and the movable arc plate (62), and one end thereof is inserted into the fixing plate (91) and fixedly connected to the limiting plate (94). The limiting plate (94) is rotatably connected in the fixing plate (91). The turntable (95) is fixedly installed at the free end of the lead screw (93) and is used for driving the lead screw (93).
3. The cement mortar strength measuring device according to claim 2, characterized in that: A tooth groove (66) is provided on the top surface of the fixed block (64). A rack (92) is provided on the bottom surface of the fixing plate (91). The rack (92) meshes with the tooth groove (66). The fixing plate (91) drives the rack (92) to mesh with the tooth groove (66) to fix the fixed block (64) adjusted in place into the telescopic hole (63). The length of the limiting plate (94) is greater than that of the lead screw (93). A fixing pad (65) is provided at the end of the fixed block (64) close to the cement mortar.
4. The cement mortar strength measuring device according to claim 3, characterized in that: The moving mechanism (7) includes a housing (71), a moving cavity (72), a moving block (73) and a moving rod (74), where: The housing (71) is fixedly installed on the bottom surface of the detection cavity (11). The moving cavity (72) is provided in the housing (71). The moving block (73) is slidably connected in the moving cavity (72) and is used to drive the moving rod (74). The moving rod (74) is fixedly installed on the side of the moving block (73), and its free end extends out of the moving cavity (72) and is fixedly connected to the moving arc plate (62). The moving rod (74) drives the moving arc plate (62) to approach or move away from the fixed arc plate (61) to fix the cement mortar to the test block (5).
5. The cement mortar strength measuring device according to claim 4, wherein: A driving cavity (76) is formed in the housing (71). A driving mechanism (8) for driving the moving block (73) is arranged in the driving cavity (76). The driving mechanism (8) includes a driving shaft (81), a driving wheel (82), a driven wheel (83), a driven shaft (84) and a threaded rod (85), where: The driving shaft (81) is rotatably connected in the driving cavity (76), and one end extends out of the driving cavity (76). The driving wheel (82) is sleeved on the driving shaft (81) and is used to drive the driven wheel (83). The driven wheels (83) are located on both sides of the driving wheel (82) and are meshed with the driving wheel (82). The two driven wheels (83) are rotatably connected in the driving cavity (76) through the driven shaft (84). The threaded rod (85) is fixedly installed at the end of the driven shaft (84) close to the moving block (73) and extends into the moving cavity (72). Two threaded sleeves (75) corresponding to the threaded rod (85) and threadedly connected are arranged on the moving block (73). The threaded rod (85) drives the moving block (73) to expand and contract along the moving cavity (72) through the threaded sleeves (75).
6. The cement mortar strength measuring device according to claim 5, characterized in that: A driving disk (86) is fixedly connected to the free end of the driving shaft (81). The driving disk (86) is used to drive the driving shaft (81). A plurality of uniformly distributed locking holes (87) are formed in the driving disk (86). A base (88) corresponding to any of the locking holes (87) is arranged on the housing (71). A screw (89) passes through any of the locking holes (87) and is inserted into the base (88) to fix the driving disk (86) in place after rotation.
7. The cement mortar strength measuring device according to claim 6, characterized in that: A punching machine (2), a lifting plate (3) and a guiding component (4) are further arranged in the testing cavity (11). A pressure block is arranged below the lifting plate (3). The test block (5) is located directly below the pressure block. The output end of the punching machine (2) drives the lifting plate (3) to move up and down to drive the pressure block to approach or move away from the test block (5) to measure the strength of the cement mortar fixed to the test block (5). The guiding component (4) is located on both sides of the punching machine (2) and is used to maintain the stability of the lifting process of the lifting plate (3).
8. The cement mortar strength measuring device according to claim 7, characterized in that: A controller (12) is further arranged on the testing table (1). The controller (12) is electrically connected to the punching machine (2) and the test block (5). The test block (5) is used to collect pressure values in real time.