Cement mortar test piece storage and transmission device

Abstract

The utility model discloses a cement mortar test piece storage and transmission device, which belongs to the technical field of cement mortar test piece fracture resistance and compression resistance tests, and comprises a storage part and a feeding part, the storage part is used for storing a cement mortar test piece; the feeding part is used for vertically conveying the cement mortar test piece stored in the storage part to a preset position. According to the test piece storage and transmission device, the storage part and the feeding part are designed, the management process of the test pieces is optimized, the storage part can store a large number of test pieces, the arrangement of the feeding part enables the test pieces to be conveyed to the preset position in order, the preset position can be the position which can be reached by a mechanical arm, and the storage and taking efficiency of the test pieces is improved through the design.

Description

Technical Field

[0001] The utility model belongs to the technical field of flexural and compressive testing of cement mortar specimens, and particularly relates to a cement mortar specimen storage and transmission device. Background Art

[0002] Testing the strength of cement mortar specimens is an essential and crucial process in the cement and related industries. However, this process is highly repetitive and time-consuming, leading to a growing trend towards automated testing. The first challenge facing this process is how to store and transport the specimens.

[0003] Currently, related products are mainly aimed at clamping and positioning cement mortar or concrete specimens during testing, and all require manual installation of the specimens. For example, Chinese patent publication number CN219608583U discloses a rapid specimen positioning device for hydraulic concrete compressive strength testing. This device speeds up specimen placement and improves specimen placement accuracy, but each test requires manual placement and clamping of the specimen, and the entire process still requires human participation. However, this device cannot be applied to cement mortar specimen positioning, nor does it implement specimen storage and transmission functions. Utility Model Content

[0004] In view of this, the utility model provides a cement mortar specimen storage and transmission device, which realizes the storage and transmission of the specimens to corresponding locations.

[0005] The utility model adopts the following technical solutions:

[0006] A cement mortar specimen storage and transmission device comprises a storage part and a feeding part;

[0007] The material storage part is used to store cement mortar test pieces;

[0008] The feeding part is used to vertically transport the cement mortar test pieces stored in the storage part to a preset position.

[0009] Furthermore, the material storage section includes at least one square material storage room;

[0010] The square material storage room can accommodate stacked cement mortar specimens, the square material storage room limits the horizontal freedom of the cement mortar specimens, and a square discharge port is provided above the square material storage room for discharging the cement mortar specimens.

[0011] Furthermore, the feeding part includes a lifting mechanism, which is used to vertically transport the cement mortar specimens in the square storage room upward.

[0012] Furthermore, the lifting mechanism is an electric push rod mechanism arranged at the bottom of the square storage room.

[0013] Furthermore, the lifting mechanism includes a lifting member, a moving member and a driving member;

[0014] One end of the lifting member is connected to the moving member, and the other end extends into the square material storage room, and the lifting member is used to lift the cement mortar test piece in the square material storage room;

[0015] The moving member is in power connection with the driving member, and the driving member is capable of driving the moving member to move vertically;

[0016] When the moving part moves vertically upward, it can drive the lifting part to move upward, so that the cement mortar test piece in the square storage room moves from bottom to top and is discharged from the square discharge port.

[0017] Furthermore, the lifting mechanism further includes a guide rail and a screw rod;

[0018] The movable member is a slide, the slide is threadedly engaged with the lead screw, and the slide is slidably engaged with the guide rail;

[0019] The driving member is a motor, which is dynamically connected to the screw rod and can drive the slide to move vertically;

[0020] The square discharge port is provided with a first induction switch. When the cement mortar specimens stacked on the top layer are completely discharged from the square discharge port, the first induction switch triggers the motor to stop rotating. When the cement mortar specimens stacked on the top layer are grabbed by the robotic arm, the first induction switch triggers the motor to drive the slide to move vertically upward.

[0021] Furthermore, a second induction switch is provided on the upper portion of the guide rail, and a third induction switch is provided on the bottom portion of the guide rail;

[0022] When the slide moves to the upper limit position, the second induction switch triggers the motor to reverse, causing the slide to move downward; when the slide moves to the upper limit position, the cement mortar test piece at the bottom layer in the square storage room has been completely ejected from the square discharge port;

[0023] When the slide moves downward to the lower limit position, the third induction switch triggers the motor to stop.

[0024] Furthermore, there are three square storage rooms.

[0025] Beneficial effects:

[0026] 1. The cement mortar specimen storage and transmission device includes a storage part and a feeding part; the storage part is used to store the cement mortar specimens; the feeding part is used to vertically transmit the cement mortar specimens stored in the storage part to a preset position.

[0027] In this way, the specimen storage and transmission device is designed with a storage part and a feeding part, which optimizes the specimen management process. The storage part can store a large number of specimens, and the setting of the feeding part enables the specimens to be transported to the preset position in an orderly manner. The preset position can be a position accessible to the robotic arm. This design improves the efficiency of specimen storage and retrieval.

[0028] 2. The material storage section includes at least one square material storage room; the square material storage room can accommodate stacked cement mortar specimens, the square material storage room limits the horizontal freedom of the cement mortar specimens, and a square discharge port is provided above the square material storage room for discharging the cement mortar specimens.

[0029] Thus, by designing a square storage room, multiple cement mortar specimens can be stacked vertically, optimizing space utilization. This design significantly improves storage efficiency, especially in limited laboratory or factory environments. The square storage room not only provides a structured storage solution but also ensures specimen stability during storage and unloading by limiting the specimens' horizontal freedom, reducing the potential risk of damage caused by specimen movement or misalignment. The square discharge port's shape matches the specimen's external shape, helping to maintain neat specimen alignment and making specimen positions more fixed and predictable.

[0030] 3. The feeding part includes a lifting mechanism, which is used to vertically transport the cement mortar specimens in the square storage room.

[0031] In this way, the vertical conveying design saves space and allows the specimens to be stacked in the direction of gravity and conveyed vertically. Compared with horizontal conveying, it reduces the possible misalignment of the specimens during horizontal movement.

[0032] 4. The lifting mechanism is an electric push rod mechanism set at the bottom of the square storage room, with a simple and compact structure.

[0033] 5. The lifting mechanism includes a lifting piece, a moving piece and a driving piece; one end of the lifting piece is connected to the moving piece, and the other end extends into the square storage room. The lifting piece is used to lift the cement mortar specimen in the square storage room; the moving piece is power-connected to the driving piece, and the driving piece can drive the moving piece to move vertically; when the moving piece moves vertically upward, it can drive the lifting piece to move upward, so that the cement mortar specimen in the square storage room moves from bottom to top and is discharged from the square discharge port.

[0034] In this way, through the combination of the lifting member, the moving member and the driving member, the lifting and vertical movement of the test piece are realized, ensuring that the test piece can be discharged smoothly from the square storage room.

[0035] 6. The lifting mechanism also includes guide rails and screw rods; the moving part is a slide, which is threaded with the screw rod and slides with the guide rails; the driving part is a motor, which is power-connected to the screw rod, and the motor can drive the slide to move vertically; the square discharge port is provided with a first induction switch, when the cement mortar specimen stacked on the top layer comes out of the square discharge port, the first induction switch triggers the motor to stop, and when the cement mortar specimen stacked on the top layer is grabbed by the robotic arm, the first induction switch triggers the motor to drive the slide to move vertically upward.

[0036] In this way, by setting the first induction switch, the motor can be automatically stopped after the test piece is discharged, and the motor can be restarted after the test piece is taken away, thereby improving the degree of automation and the safety of operation.

[0037] 7. A second induction switch is provided at the upper part of the guide rail, and a third induction switch is provided at the bottom of the guide rail; when the slide moves to the upper limit position, the second induction switch triggers the motor to reverse and make the slide move downward; when the slide moves to the upper limit position, the cement mortar specimen on the bottom layer in the square storage room has been completely discharged from the square discharge port; when the slide moves downward to the lower limit position, the third induction switch triggers the motor to stop.

[0038] In this way, the triggering condition of the second induction switch is that the slide moves to the upper limit position and the bottom layer of test pieces are completely exposed from the square discharge port. In other words, when the slide moves to the upper limit position, it can ensure that all test pieces in the square storage room have come out of the square discharge port, which ensures the continuity and stability of the test piece transmission. Moreover, because the cement mortar test pieces at the bottom layer in the square storage room have all come out of the square discharge port, the motor is triggered to reverse and move the slide downward. The downward movement of the slide will also drive the lifting piece extending into the square storage room to move downward. In this way, after all the test pieces in the square storage room have come out of the square discharge port, the square storage room can prepare for the next storage. The design of the entire feeding unit does not require manual intervention, and the entire automation process is smoother and more automated.

[0039] 8. There are three square storage rooms. This is because when testing the flexural and compressive strength of cement mortar specimens, the flexural strength is calculated from the arithmetic mean of the flexural strength data from the three specimens. The compressive strength is calculated from the compressive strength data from the three specimens folded into six sections. In other words, according to standards and specifications, flexural and compressive strength tests of cement mortar specimens are conducted as a group of three complete specimens. Therefore, three square storage rooms are provided. When specimens are stored in each square storage room, there are three specimens on each level, corresponding to one test set. Each time the robotic arm grabs the three specimens from the top level of the three square storage rooms, it obtains the data required for one test set. If only two square storage rooms are provided, there may be one or two specimens remaining on the top level. The robotic arm must determine which of these conditions is correct before continuing to grip and complete a test set. Using other numbers of square storage rooms also requires the robotic arm to determine when to continue gripping specimens to complete a test set. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a three-dimensional structural diagram of the cement mortar specimen storage and transmission device provided by the utility model;

[0041] Figure 2 This is a three-dimensional structural diagram of the automatic testing system for cement mortar specimen strength provided by the utility model;

[0042] Figure 3 yes Figure 2 Schematic diagram of the three-dimensional structure of the end effector on the middle robot arm;

[0043] Figure 4 yes Figure 2 Schematic diagram of the three-dimensional structure of the transfer station;

[0044] Figure 5 yes Figure 2 Schematic diagram of the three-dimensional structure of the test device;

[0045] Figure 6 This is a schematic diagram of the placement requirements of cement mortar specimens on the stage of the flexural testing machine;

[0046] Figure 7 This is a schematic diagram of the placement requirements of cement mortar specimens on the stage of the compression testing machine;

[0047] Among them, 1-base, 2-robotic arm, 3-waste bucket, 4-end effector, 5-turntable, 6-bending and compression machine 6, 7-specimen storage and transmission device, 8-air compressor, 41-clamping part, 42-mounting plate, 43-barcode scanner, 44-camera, 51-base, 52-first limiting part, 53-second limiting part, 61-discharging chute, 62-push rod, 63-nozzle, 71-switch door, 72-vertical steel bar, 73-horizontal steel plate, 74-specimen storage rack, 75-square discharge port, 76-first induction switch, 77-motor, 78-slide. DETAILED DESCRIPTION

[0048] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0049] Example 1:

[0050] Reference Figure 1 This embodiment provides a cement mortar specimen storage and transmission device, including a storage part and a feeding part; the storage part is used to store cement mortar specimens; the feeding part is used to vertically transmit the cement mortar specimens stored in the storage part to a preset position.

[0051] In this way, the specimen storage and transmission device is designed with a storage part and a feeding part, which optimizes the specimen management process. The storage part can store a large number of specimens, and the setting of the feeding part enables the specimens to be transported to the preset position in an orderly manner. The preset position can be a position accessible to the robotic arm. This design improves the efficiency of specimen storage and retrieval.

[0052] Specifically, in this embodiment, the material storage section includes at least one square material storage room; the square material storage room can accommodate stacked cement mortar specimens, the square material storage room limits the horizontal freedom of the cement mortar specimens, and a square discharge port is provided above the square material storage room for discharging the cement mortar specimens.

[0053] Thus, by designing a square storage room, multiple cement mortar specimens can be stacked vertically, optimizing space utilization. This design significantly improves storage efficiency, especially in limited laboratory or factory environments. The square storage room not only provides a structured storage solution but also ensures specimen stability during storage and unloading by limiting the specimens' horizontal freedom, reducing the potential risk of damage caused by specimen movement or misalignment. The square discharge port's shape matches the specimen's external shape, helping to maintain neat specimen alignment and making specimen positions more fixed and predictable.

[0054] In this embodiment, the feeder includes a lifting mechanism for vertically transporting cement mortar specimens from a rectangular storage compartment. This vertical transport design saves space and allows specimens to be stacked and transported vertically in the direction of gravity. Compared to horizontal transport, this reduces the potential for specimen misalignment during horizontal movement.

[0055] Specifically, the lifting mechanism can be an electric push rod mechanism arranged at the bottom of the square storage room, which has a simple and compact structure.

[0056] In particular, in this embodiment, the lifting mechanism is configured with a structure different from that of the electric push rod mechanism, specifically comprising a lifting member, a moving member, and a driving member; one end of the lifting member is connected to the moving member, and the other end extends into the square storage room. The lifting member is used to lift the cement mortar test piece in the square storage room; the moving member is power-connected to the driving member, and the driving member is capable of driving the moving member to move vertically; when the moving member moves vertically upward, it can drive the lifting member upward, causing the cement mortar test piece in the square storage room to move from bottom to top and be discharged from the square discharge port 75. In this way, through the combination of the lifting member, the moving member, and the driving member, the lifting and vertical movement of the test piece are achieved, ensuring that the test piece can be smoothly discharged from the square storage room.

[0057] More specifically, the lifting mechanism also includes guide rails and screw rods; the moving part is a slide 78, which is threaded with the screw rod and slides with the guide rails; the driving part is a motor 77, which is connected to the screw rod power, and the motor 77 can drive the slide 78 to move vertically; the lifting part is a horizontally arranged steel plate, called a horizontal steel plate 73; the square discharge port 75 is provided with a first induction switch 75, and when the cement mortar specimens stacked on the top layer come out of the square discharge port 75, the first induction switch 76 triggers the motor to stop, and when the cement mortar specimens stacked on the top layer are After taking it away, the first induction switch 76 triggers the motor 77 to drive the slide 78 to move vertically upward; moreover, a second induction switch is provided on the upper part of the guide rail, and a third induction switch is provided on the bottom of the guide rail; when the slide 78 moves to the upper limit position, the second induction switch triggers the motor 77 to reverse, causing the slide 78 to move downward; when the slide 78 moves to the upper limit position, the second induction switch triggers the cement mortar specimen on the bottom layer in the square storage room to come out of the square discharge port 75; when the slide 78 moves downward to the lower limit position, the third induction switch triggers the motor 77 to stop.

[0058] In this way, the triggering condition of the second induction switch is that the slide 78 moves to the upper limit position and the bottom layer of test pieces are completely exposed from the square discharge port 75. In other words, when the slide 78 moves to the upper limit position, it can ensure that all test pieces in the square storage room have come out of the square discharge port 75, which ensures the continuity and stability of the test piece transmission. Moreover, because the cement mortar test pieces in the bottom layer of the square storage room have all come out of the square discharge port 75, the trigger motor 77 reverses and moves the slide 78 downward. The downward movement of the slide 78 will also drive the lifting piece extending into the square storage room to move downward. In this way, after all the test pieces in the square storage room have been discharged from the square discharge port 75, the square storage room can prepare for the next storage. The design of the entire feeding unit does not require manual intervention, and the entire automation process is more smooth and automated.

[0059] Example 2:

[0060] Reference Figures 1 to 7 Based on the above-mentioned embodiment 1, a cement mortar specimen strength automatic testing system is provided, which includes a specimen storage and transmission device 7, a flexural testing machine, a compression testing machine, a flexural cleaning mechanism, a compression cleaning mechanism, a robotic arm 2, and a host computer, wherein:

[0061] The specimen storage and transmission device 7 is used to store and transmit cement mortar specimens (or simply specimens); the flexural testing machine is used to perform flexural strength tests on cement mortar specimens; the compression testing machine is used to perform compressive strength tests on cement mortar specimens; the flexural cleaning mechanism is used to clean the loading platform of the flexural testing machine; the compression cleaning mechanism is used to clean the loading platform of the flexural testing machine; the robotic arm 2 can grab the cement mortar specimens on the specimen storage and transmission device 7 according to a preset program and place them on the loading platform of the flexural testing machine for flexural strength testing. The robotic arm 2 can also grab the cement mortar specimens that are folded into two parts after the flexural strength test is completed to the compression testing machine for compressive strength testing; the upper computer is connected to the flexural testing machine and the compression testing machine by signal, and can record the flexural strength and compressive strength data of the cement mortar specimens. The above-mentioned flexural testing machine and compression testing machine can be integrated into one, called a flexural and compression machine 6.

[0062] In this way, the cement mortar specimen strength automatic testing system provided by the present invention integrates devices including a specimen storage and transmission device 7, a flexural testing machine, a compression testing machine, a flexural cleaning mechanism, a compression cleaning mechanism, a robotic arm 2, and a host computer. It is only necessary to prepare the specimen in the specimen storage and transmission device 7 to realize the fully automated operation of the flexural and compressive strength testing of the cement mortar specimen. The operation process of "placing the specimen - pressurizing - removing the specimen - recording data" can be performed by the robotic arm 2 according to a preset program, and no longer requires an operator to operate. After the cement mortar specimen strength automatic testing system is started, the test data can be automatically uploaded to the host computer, and the operator can do other work. The operator no longer needs to mechanically repeat the operation of "placing the specimen - pressurizing - removing the specimen - recording data", thereby improving productivity and avoiding the problem of traditional manual operation affecting the accuracy of the test results. It should be noted that in the prior art, there are already flexural testing machines and compression testing machines that automatically upload test data to a computer. Moreover, it can be understood that the specimen storage and transmission device 7, anti-flexural cleaning mechanism, anti-compressive cleaning mechanism, and robotic arm 2 corresponding to the above functions can be fully realized through existing technology, and the fully automated operation of the flexural and compressive strength test of the cement mortar specimens can be realized according to the above technical scheme.

[0063] The square shape of the discharge port 75 matches the specimen's shape, helping to maintain neat specimen alignment and providing an accurate gripping point for the robotic arm 2. This simplifies the robotic arm's gripping logic and motion path, as the specimen's position is more fixed and predictable. This design reduces the robotic arm's search and positioning time when gripping the specimen, improving the efficiency of the entire testing process.

[0064] Specifically, in this embodiment, referring to Figure 3 The robot arm 2 is equipped with a barcode scanner 43 for scanning the information code on the cement mortar specimen to obtain information about the cement mortar specimen, including the specimen number. This allows the robot arm 2 to automatically obtain the specimen identification information, so that each specimen number can correspond to its own flexural strength and compressive strength data, which facilitates specimen traceability and quality management.

[0065] In addition, in this embodiment, a camera 44 is also provided on the robot arm 2. The camera 44 can obtain the position of the cement mortar specimen on the specimen storage and transmission device 7, and is used to assist in adjusting the posture of the end effector 4 of the robot arm 2 when necessary. This enables the robot arm 2 to grasp the specimen more reliably. It should be noted that the camera 44 is not necessary, because in the cement mortar specimen strength automatic testing system, under normal circumstances, the position of the specimen is determined, so the robot arm 2 only needs to run according to the planned action to achieve the grasping of the specimen. The provision of the camera 44 allows the robot arm 2 to grasp the specimen smoothly even when the position of the specimen deviates due to unexpected circumstances.

[0066] Specifically, in this embodiment, a turntable 5 is also included. The robotic arm 2 can first grab the specimen that is folded into two parts after the flexural strength test is completed and place it on the turntable 5 according to a preset program, and then grab the two half specimens on the turntable 5 and place them on the compression testing machine for compression strength testing.

[0067] Reference Figure 6 and Figure 7 , because the placement requirements of the specimens on the loading platform of the flexural testing machine and the loading platform of the compression testing machine are different. Specifically, on the loading platform of the flexural testing machine, the scraping surface of the specimen ( Figure 6 and Figure 7The surface with a diagonal line in the middle is the scraping surface) is to face forward, while on the loading platform of the compression testing machine, the scraping surface of the specimen is to face right. At the same time, if the end effector 4 of the robot arm 2 grabs the specimen by means of a clamping claw, and the clamping claw clamps the specimen on the loading platform of the flexural testing machine in the left and right directions, due to the structure of the flexural testing machine, the clamping claw is likely to interfere with the left and right structure of the flexural testing machine, and it is more convenient to clamp the specimen on the flexural testing machine from the top and bottom directions. If the gripper grabs the specimen from the loading platform of the flexural testing machine in the up-down direction, the robot arm 2 will place the specimen gripped in the up-down direction onto the loading platform of the compression testing machine with the scraping surface of the specimen facing right. The gripper is in the up-down direction, and the gripper distributed up and down is likely to interfere with the up-down structure of the compression testing machine. At this time, the robot arm 2 cannot rotate the gripper 90° to change the gripper from the up-down direction to the left-right direction, thereby avoiding interference between the gripper and the up-down structure of the compression testing machine. This is because once the gripper rotates, the scraping surface of the specimen clamped by the gripper will also rotate 90°. In this way, after the specimen is placed on the loading platform of the compression testing machine, the placement of the specimen will not meet the requirement of the scraping surface facing right. By providing a turntable 5, the grippers of the robotic arm 2 can first clamp the specimen from the flexure testing machine onto the turntable 5 by gripping it vertically. The end effector 4 on the robotic arm 2 then grips the specimen's scraped surface and the surface opposite the scraped surface on the turntable 5, and then places it on the loading platform of the compression testing machine to complete the compression test. In other words, for the flexure testing machine, interference easily occurs in the left-right direction, requiring gripping in the vertical direction. For the compression testing machine, interference easily occurs in the vertical direction, requiring grippers to be positioned in the horizontal direction to successfully place the specimen. If the rotation changes the vertical gripping to the horizontal gripping, the orientation of the specimen's scraped surface on the compression testing machine will not meet the requirements. However, by providing a turntable 5, the specimen from the flexure testing machine can be gripped vertically and placed on the turntable 5. The grippers then grip the specimen's scraped surface and the surface opposite the scraped surface on the turntable 5. The robotic arm 2 can then rotate so that the scraped surface faces right. At this point, the grippers are also positioned horizontally, allowing the specimen to be successfully placed on the loading platform of the compression testing machine for compression testing. That is to say, the function of the transfer table 5 is similar to providing an opportunity for the gripping method of the gripping claws of the robot arm 2 to change, thereby enabling the specimen to be transferred from the flexural testing machine to the compression testing machine for compression testing by gripping.

[0068] Specifically, in this embodiment, referring to Figure 4The turntable 5 includes a first limiting portion 52, which is provided with a horizontal support member. The width of the horizontal support member is smaller than the width of the cement mortar specimen. Second limiting portions 53 are provided on both sides of the horizontal support member. The height of the second limiting portion 53 is greater than the height of the first limiting portion 52, and the second limiting portion 53 can move laterally along the horizontal support member. The horizontal support member is used to place the cement mortar specimen and limit the upper and lower positions of the cement mortar specimen. The second limiting portion 53 is used to limit the left and right positions of the cement mortar specimen placed on the horizontal support member. The robotic arm 2 can first grab and place the cement mortar specimen on the horizontal support member after the flexural strength test is completed according to the preset program, and then grab the cement mortar specimen on the horizontal support member and place it in the compression testing machine for compression strength testing. In this way, because the turntable 5 has a leveling function for the specimen, the specimen on the turntable 5 can always have a fixed position. Therefore, the robotic arm 2 only needs to perform the corresponding actions according to the program to realize the automation of the entire process.

[0069] In particular, in this embodiment, the test piece clamped by the robot arm 2 on the stage of the flexural testing machine is placed on the turntable 5 with the scraped surface facing upward. Then, when the robot arm 2 clamps the test piece on the turntable 5, it clamps the scraped surface of the test piece and the plane opposite to the scraped surface, and finally places the test piece on the stage of the compression testing machine with the scraped surface facing right.

[0070] More specifically, in this embodiment, the transfer table 5 also includes a base 51, a first limiting portion 52 is fixed on the base 51, the first limiting portion 52 includes a bracket, the bottom of the bracket is fixed to the base 51, and two square steel plates are horizontally fixed on the top of the bracket as horizontal supports. The two square steel plates are spaced a set distance apart to form an opening, and the maximum width between the two square steel plates is slightly smaller than the width of the test piece. The second limiting portion 53 is arranged on the base 51, and the turntable 5 is provided with a total of two second limiting portions 53. Each second limiting portion 53 includes two square steel plates and a power to drive the two steel plates to move. The power can be pneumatic, electric or hydraulic. The two movable steel plates are vertically and symmetrically distributed on both sides of the horizontal support in the first limiting portion 52, and can move toward or away from each other. When the two sections of the specimen are placed horizontally on the top surface of the horizontal support, because the maximum width between the two square steel plates is slightly smaller than the width of the specimen, the two movable steel plates can clamp the specimen when they move toward each other (when the robotic arm 2 wants to clamp the specimen on the turntable 5, the two movable steel plates can loosen the clamping of the specimen to avoid affecting the robotic arm 2 clamping the specimen on the turntable 5). In this way, the specimen can be leveled, which facilitates the robotic arm 2 to clamp the specimen on the turntable 5.

[0071] It should be noted that, in a possible embodiment, the turntable 5 may not be provided, because in addition to grasping the specimen by clamping, the robot arm 2 can also grasp objects by vacuum adsorption. In this way, the robot arm 2 can directly adsorb the forward scraping surface of the specimen when grasping the specimen on the loading platform of the flexural testing machine, and then place the adsorbed specimen with the scraping surface facing right on the loading platform of the compression testing machine. In this case, the turntable 5 can be omitted. In addition, the robot arm 2 can also grasp the specimen by fingertips. Because the fingertip structure is small, the robot arm 2 can directly grasp the forward scraping surface and the plane opposite to the fingertips by fingertips when grasping the specimen on the loading platform of the flexural testing machine, and then place the grasped specimen with the scraping surface facing right on the loading platform of the compression testing machine. In this case, the turntable 5 can also be omitted. Moreover, the robotic arm 2 can even first hook the test piece on the loading platform of the flexural testing machine, and then use the robotic arm 2 to clamp the scraping surface of the object and the plane opposite to the scraping surface, and finally place the grabbed test piece with the scraping surface facing to the right on the loading platform of the compression testing machine. At this time, the transfer table 5 can also be omitted.

[0072] More specifically, in this embodiment, referring to Figure 2 The bottom of the robotic arm 2 is mounted on a base 1, which is provided with storage space to improve space utilization. Both the anti-bend cleaning mechanism and the anti-pressure cleaning mechanism include a nozzle 63 connected to an air compressor 8. The air compressor 8 supplies air to the nozzle 63, which then provides a jet of air for cleaning. Furthermore, the anti-pressure cleaning mechanism also includes a push rod 62, which can push the crushed specimen on the compression tester's stage toward an inclined discharge chute 61, through which the crushed specimen then flows to the waste bin 3.

[0073] In addition, in this embodiment, referring to Figure 1 and Figure 2The storage unit as a whole is in the form of a specimen storage rack 74. The storage unit includes an outer shell and a plurality of square compartments formed by a certain distance between vertical steel bars 72 arranged in the shell. There are three square compartments in total. One square compartment is equivalent to one square storage room. The cross-sectional area of the square storage room is slightly larger than the cross-sectional area of the cement mortar specimen. The three side-by-side square storage rooms can store a total of three stacks of cement mortar specimens. In this way, when the flexural and compressive strength of the cement mortar specimens are tested, the flexural strength is calculated based on the arithmetic mean of the flexural strength data of the three specimens. The compressive strength is calculated based on the arithmetic mean of the compressive strength data of the three specimens after being folded into six sections. That is to say, according to the standards and specifications, the flexural and compressive strength tests of cement mortar specimens are carried out on three complete cement mortar specimens as a group, so three square storage rooms are set up. In this way, when the specimens are stored in the square storage rooms, there are a total of three specimens on the same layer. The three specimens just correspond to one group of tests. Each time the robotic arm clamps the three specimens on the top layer of the three square storages, it obtains the data required for a group of tests. If only two square storage rooms are set up, there may be two situations in which one or two specimens are left on the top layer. In this case, the robotic arm must determine which situation it is in order to continue clamping and complete a group of tests. If only other numbers of square storage rooms are set up, the robotic arm will also need to determine when to continue clamping the specimens to complete a complete group of tests.

[0074] Moreover, a switch door 71 is provided on at least one surface of the housing of the storage part, and the test piece can be placed in the square storage room by opening the switch door 71. Figure 1 In this embodiment, the lifting member is composed of a horizontal steel plate 73, which extends from the intervals between the vertical steel bars 72 into the square storage room. Moreover, in this embodiment, in order to better show the structure of the square storage room, part of the shell of the storage part is not shown. Figure 1 The first induction switch 76 is located near the square discharge port 75. The first induction switch 76 can be a proximity switch. Only when the test pieces on the top layer of the three square storage rooms are all grabbed by the robot arm 2 will the motor 77 drive the slide 78 to continue to rise. In addition, the second induction switch and the third induction switch can also be proximity switches.

[0075] More specifically, in this embodiment, referring to Figure 2 and Figure 3The robotic arm 2 grasps the specimen through the end effector 4, and the grasping method is clamping. The end effector 4 includes a mounting plate 42. One side of the mounting plate 42 is used to connect to the robotic arm 2. The other side of the mounting plate 42 is equipped with two clamping parts 41 and a code scanner 43 and a camera 44 located between the two clamping parts 41. Each clamping part 41 is equipped with two clamping plates and a power source to drive the two clamping plates to move. The power source can be pneumatic, electric, or hydraulic. The two clamping parts 41 are provided on the mounting plate 42. This allows the specimen that has been folded into two parts on the flexural test machine to be clamped onto the transfer table 5 at one time, improving efficiency.

[0076] Example 3:

[0077] Based on the second embodiment, a method for automatically testing the strength of a cement mortar specimen is provided, comprising:

[0078] Step 1: The robotic arm 2 grabs a cement mortar specimen from the specimen storage and transmission device 7 and places it on the stage of the flexural testing machine for flexural strength testing, obtains the flexural strength C1 and transmits it to the host computer;

[0079] After the cement mortar specimen is broken into two pieces during the flexural strength test and is taken away by the robot arm 2, the flexural cleaning mechanism cleans the loading platform of the flexural testing machine;

[0080] Step 2: Robotic arm 2 grabs a broken section of cement mortar specimen and places it on the stage of the compression testing machine for compressive strength testing, obtains the compressive strength C2 and transmits it to the host computer;

[0081] After the compressive strength C2 is obtained, the compressive cleaning mechanism cleans the loading platform of the compressive testing machine;

[0082] Step 3: The robotic arm 2 grabs the other broken cement mortar specimen and places it on the stage of the compression testing machine for compressive strength testing, obtains the compressive strength C3 and transmits it to the host computer;

[0083] After the compressive strength C3 is obtained, the compressive cleaning mechanism cleans the loading platform of the compressive testing machine;

[0084] Step 4: Repeat steps 1 to 3 to complete the automatic strength test of a preset number of cement mortar specimens.

[0085] Specifically, if the robot arm 2 grabs the specimen by clamping, then in step two, the robot arm 2 first grabs the two broken cement mortar specimens on the loading platform of the flexural testing machine and places them on the turntable 5. After the turntable 5 levels the two cement mortar specimens in the up and down directions and left and right directions, the robot arm 2 grabs a piece of cement mortar specimen on the turntable 5 to the loading platform of the compression testing machine for compressive strength test, obtains the compressive strength C2 and transmits it to the host computer; in step three, the robot arm 2 grabs another piece of cement mortar specimen on the turntable 5 to the loading platform of the compression testing machine for compressive strength test, obtains the compressive strength C3 and transmits it to the host computer.

[0086] More specifically, if the specimen storage and transmission device 7 is provided with a square storage room, the robotic arm 2 grabs the specimen by clamping, and a transfer table 5 is provided, the following steps can be referred to:

[0087] Step 1: Place the cement mortar specimens in the square storage room in order, and click Start Test on the host computer;

[0088] Step 2: The horizontal steel plate in the square storage room rises along with the slide 78 until the cement mortar specimen on the top layer of the square storage room comes out completely from the square discharge port 75;

[0089] Step 3: Robotic arm 2 clamps a cement mortar specimen on the top layer to the loading platform of the flexural testing machine for flexural testing. The flexural testing machine is started to perform flexural strength testing, and the flexural strength C1 is obtained and transmitted to the host computer;

[0090] Step 4: The robotic arm 2 clamps the two broken specimens to the first limiting portion of the transfer table 5. The second limiting portion flattens the two specimens. The nozzle 63 in the anti-bending cleaning mechanism sprays gas to clean the stage of the anti-bending tester.

[0091] Step 5: The robotic arm 2 clamps a section of the test piece on the transfer table 5 to the stage of the compression testing machine for a compressive strength test. The compression testing machine is started to perform the compressive strength test, and the compressive strength C2 is obtained and transmitted to the host computer. The push rod 62 in the compression cleaning mechanism pushes the crushed test piece toward the discharge chute 61, so that the crushed test piece flows along the discharge chute 61 toward the waste bin 3. The nozzle 63 in the compression testing machine sprays gas to clean the stage of the compression testing machine.

[0092] Step 6: After repeating step 5 to obtain the compressive strength C3 of another test piece, the robot arm 2 moves to the initial position, ready to clamp the test piece at the square outlet 75 next time;

[0093] Step 7: Repeat steps 3 to 6 until all three test pieces on the top layer of the three square material storage rooms coming out of the square material outlet 75 are grabbed by the robot arm 2 and the flexural strength test and the compressive strength test are completed.

[0094] Step 8: If there are still test pieces in the square storage room, repeat steps 2 to 7. If all test pieces in the square storage room are tested, the slide 78 moves downward to the lower limit position to prepare for the next loading of the square storage room, and the test ends.

[0095] In summary, the above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention. For example, replacing the bolt connection in this embodiment with a stud connection shall be included in the scope of protection of the present invention.

Claims

1. A cement mortar specimen storage and transmission device, characterized in that: It includes storage part and feeding part; The material storage part is used to store cement mortar test pieces; The feeding part is used to vertically transport the cement mortar test pieces stored in the storage part to a preset position; The material storage section includes at least one square material storage room; The square material storage room can accommodate stacked cement mortar specimens, the square material storage room limits the horizontal freedom of the cement mortar specimens, and a square discharge port is provided above the square material storage room for discharging the cement mortar specimens; The feeding part includes a lifting mechanism, and the lifting mechanism is used to vertically transport the cement mortar test pieces in the square storage room upward.

2. A cement mortar specimen storage and transmission device according to claim 1, characterized in that: The lifting mechanism is an electric push rod mechanism arranged at the bottom of the square storage room.

3. The cement mortar specimen storage and transmission device according to claim 1, characterized in that: The lifting mechanism includes a lifting member, a moving member and a driving member; One end of the lifting member is connected to the moving member, and the other end extends into the square material storage room, and the lifting member is used to lift the cement mortar test piece in the square material storage room; The moving member is in power connection with the driving member, and the driving member is capable of driving the moving member to move vertically; When the moving part moves vertically upward, it can drive the lifting part to move upward, so that the cement mortar test piece in the square storage room moves from bottom to top and is discharged from the square discharge port.

4. A cement mortar specimen storage and transmission device according to claim 3, characterized in that: The lifting mechanism also includes a guide rail and a screw rod; The movable member is a slide, the slide is threadedly engaged with the lead screw, and the slide is slidably engaged with the guide rail; The driving member is a motor, which is dynamically connected to the screw rod and can drive the slide to move vertically; The square discharge port is provided with a first induction switch. When the cement mortar specimens stacked on the top layer are completely discharged from the square discharge port, the first induction switch triggers the motor to stop. After the cement mortar specimens stacked on the top layer are removed, the first induction switch triggers the motor to drive the slide to move vertically upward.

5. The cement mortar specimen storage and transmission device according to claim 4, characterized in that: A second induction switch is provided on the upper portion of the guide rail, and a third induction switch is provided on the bottom portion of the guide rail; When the slide moves to the upper limit position, the second induction switch triggers the motor to reverse, causing the slide to move downward; when the slide moves to the upper limit position, the cement mortar test piece at the bottom layer in the square storage room has been completely ejected from the square discharge port; When the slide moves downward to the lower limit position, the third induction switch triggers the motor to stop.

6. A cement mortar specimen storage and transmission device according to any one of claims 1 to 5, characterized in that: There are three square storage rooms.

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