A compression testing apparatus for concrete test blocks
Patent Information
- Application Number
- CN202522104319.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-29
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-09-29
AI Technical Summary
In existing concrete test block compressive strength testing equipment, the protective cover needs to be matched and installed with the upper pressure block, which is prone to interference, and the flying fragments pose a threat to the safety of operators and equipment.
The system uses a top plate, a bottom plate, a splash guard, and an openable splash guard to form a closed space. The pushing device moves in a straight line through the pushing platform and the pushing plate. The splash guard extends or hinges vertically to open and close the channel. Combined with ball screws and guide rails, it achieves safe protection and smooth material feeding and discharging.
It effectively prevents fragments from flying, ensuring the safety of operators and equipment, improving testing efficiency, ensuring accurate pushing of test blocks and smooth removal of fragments, and enhancing the stability and accuracy of the testing process.
Smart Images
Figure CN224933753U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing equipment technology, specifically to a compressive strength testing device for concrete test blocks. Background Technology
[0002] In the field of construction engineering, the compressive strength of concrete test blocks is one of the key indicators for measuring concrete quality, directly related to the safety and reliability of building structures. Therefore, accurate and efficient compressive strength testing of concrete test blocks is an indispensable part of engineering quality control.
[0003] Currently, the compressive strength testing of concrete test blocks is mainly carried out using a press machine. A traditional press machine typically consists of a lower pressure plate and an upper pressure plate. During testing, the concrete test block is placed on the lower pressure plate, and the upper pressure plate moves downward under the drive of a vertical telescopic hydraulic cylinder, applying pressure to the test block until it breaks, thereby obtaining the compressive strength data of the test block.
[0004] Traditional methods use a robotic arm to place concrete test blocks onto a lower pressure plate. After the test, the fragments generated by the pressure are manually cleaned up. Considering safety and ease of operation, existing technologies use a pusher to push the test block onto the lower pressure plate, and then remove the fragments after the test. During testing, the test block breaks under pressure, generating fragments that may fly in all directions, posing a threat to the safety of operators and potentially damaging surrounding equipment. Therefore, protective components are needed. These components must not impede the movement of the pusher and must completely block the fragments. Existing protective components typically use liftable guards. However, since the guard needs to move relative to the upper pressure plate, its dimensions must match the upper pressure plate, and alignment during installation is crucial. Improper installation will cause interference between the guard and the upper pressure plate during movement. Utility Model Content
[0005] To address the technical problem that existing protective components typically employ liftable protective covers, which require the cover to be raised and lowered relative to the upper pressure block, necessitating a matching size between the cover and the block during installation, and the resulting interference between the cover and the upper pressure block during lifting if improperly installed, this invention provides a compressive strength testing device for concrete test blocks.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A compressive strength testing device for concrete test blocks includes a press, which includes a lower pressure plate and an upper pressure plate directly above the lower pressure plate. The top of the upper pressure plate is connected to a vertical telescopic cylinder, which is installed on a top plate. The top plate is rectangular, and two splash guards are provided on a pair of opposite sides of the top plate. The two splash guards are vertically and oppositely arranged. A material inlet / outlet channel is formed between the lower surface of the top plate, the upper surface of the lower pressure plate, and the opposite sides of the two splash guards. A splash guard is provided on another pair of opposite sides of the top plate. The two splash guards are vertically and oppositely arranged, and the splash guards can open and close the material inlet / outlet channel. A pushing device is provided on one side of the material inlet / outlet channel in the inlet / outlet direction. The pushing device includes a horizontally arranged pushing platform, the upper surface of which is flush with the upper surface of the lower pressure plate. A horizontally arranged pushing plate is provided on the upper surface of the pushing platform, and the pushing plate can move along the inlet / outlet direction of the material inlet / outlet channel.
[0007] By adopting the above structural design, this application uses a top plate, a lower pressure plate, a splash guard, and a switchable splash guard to create a relatively enclosed space. This effectively prevents the fragments from flying when the test block is crushed, maximizing the safety of operators and the integrity of surrounding equipment. The installation of the splash guard and the switchable splash guard does not require alignment with the upper pressure plate, and the opening and closing of the splash guard will not interfere with the extension and retraction of the upper pressure plate. The splash guard and the switchable splash guard not only provide protection but also do not affect the feeding and discharging of the test block. Furthermore, during testing, the splash guard can prevent fragments from falling to the ground from both sides. The upper surface of the pusher platform in this application is flush with the upper surface of the lower pressure plate. The pusher platform moves along the feeding and discharging channel, and only needs to move back and forth in a straight line to smoothly push the concrete test block to the testing position or push out the fragments, preventing the test block from tipping over during transportation and ensuring the smoothness of the testing process.
[0008] As a preferred implementation of a compressive strength testing device for concrete test blocks, the splash guard can extend and retract vertically to open and close the material inlet and outlet channels.
[0009] With the above structural design, the splash guard extends and retracts vertically to open and close, making it simple to operate and responsive. It can quickly close and open the material inlet and outlet channels, improving inspection efficiency. Furthermore, since the splash guard is telescopic, it does not require additional horizontal space, making it suitable for working environments with limited space and allowing for a more compact overall equipment layout.
[0010] As a preferred implementation of a compressive strength testing device for concrete test blocks, the splash guard can move vertically to open and close the material inlet and outlet channels.
[0011] With the above structural design, the splash-proof door panel moves vertically, and the opening and closing process is smooth and reliable, with less likelihood of jamming or other malfunctions, ensuring the stable performance of the protective function.
[0012] As a preferred implementation of a compressive strength testing device for concrete test blocks, the top of the splash guard is hinged to the top plate, and the splash guard can be opened and closed up and down to open and close the material inlet and outlet channels; or, the side of the splash guard is hinged to the splash guard, and the splash guard can be opened and closed left and right to open and close the material inlet and outlet channels.
[0013] The above structural design uses a hinged connection, allowing the splash guard to open and close vertically or horizontally, providing flexible movement to adapt to different operating habits and site requirements.
[0014] As a preferred implementation of a compressive strength testing device for concrete test blocks, the upper surface of the pusher is equipped with a ball screw device, which includes a screw and a nut. The axial direction of the screw is horizontally set along the feed and discharge direction of the feed and discharge channel, and the top of the nut is connected to the pusher plate.
[0015] With the above structural design, the ball screw device has high-precision transmission characteristics, which can accurately control the moving distance and speed of the push plate, ensuring that the concrete test block is accurately pushed to the designated testing position of the lower pressure plate, thereby improving the accuracy of the test.
[0016] As a preferred implementation of a compressive strength testing device for concrete test blocks, the upper surface of the pusher is provided with a slide rail, which extends along the inlet and outlet direction of the material inlet and outlet channel. The slide rail is slidably connected to the slider, and the top of the slider is connected to the pusher plate.
[0017] With the above structural design, the cooperation between the slide rail and the slider provides precise guidance for the movement of the push plate, ensuring that the push plate always moves along the direction of the feed and discharge channels, avoiding deviation during movement, and ensuring the accuracy of the test block transfer.
[0018] As a preferred implementation of a compressive strength testing device for concrete test blocks, the lead screw and slide rail are respectively set on both sides of the push plate perpendicular to the infeed and outfeed direction of the material infeed and outfeed channel.
[0019] With the above structural design, the lead screw and slide rail are respectively set on both sides of the push plate perpendicular to the feeding and discharging direction, so that the force on the push plate is more balanced during the movement, avoiding deformation or movement jamming of the push plate due to uneven force, and ensuring the stability and smoothness of the push.
[0020] As a preferred implementation of a compressive strength testing device for concrete test blocks, it includes a control cabinet, which is equipped with a hydraulic pump. The hydraulic pump is connected to a vertical telescopic cylinder via an oil pipe, and a hydraulic valve group is installed on the oil pipe. The control cabinet is also equipped with a controller, which is connected to a sensor. The controller is electrically connected to the sensor and the hydraulic valve group.
[0021] Using the above structural design, the sensor can monitor the working status of the vertical telescopic cylinder in real time. In case of abnormalities, the controller can promptly adjust the cylinder's movement by controlling the hydraulic valve assembly, preventing equipment overload damage or safety accidents and improving equipment safety. Through the controller's electrical connection control of the sensor and hydraulic valve assembly, automatic adjustment of the vertical telescopic cylinder pressure and real-time feedback of detection data can be achieved, improving the automation and accuracy of the detection. The cooperation between the hydraulic pump, hydraulic valve assembly, and controller can precisely control the cylinder's pressure output. Combined with sensor feedback, this makes the obtained compressive strength data of the concrete test blocks more accurate and reliable.
[0022] The beneficial effects of this utility model include: This application utilizes a top plate, a bottom pressure plate, a splash guard, and a switchable splash guard to create a relatively enclosed space. This effectively prevents fragments from flying when the test block is crushed, maximizing operator safety and protecting surrounding equipment. The splash guard and the switchable splash guard do not require alignment with the top pressure plate, and the opening and closing of the splash guard will not interfere with the extension and retraction of the top pressure plate. The splash guard and the switchable splash guard provide protection without affecting the loading and unloading of the test block. Furthermore, during testing, the splash guard prevents fragments from falling to the ground from both sides. The upper surface of the pusher platform in this application is flush with the upper surface of the bottom pressure plate. The pusher platform moves along the loading and unloading channel, and only needs to move back and forth in a straight line to smoothly push the concrete test block to the testing position or push out fragments, preventing the test block from tipping over during transport and ensuring the smoothness of the testing process. Attached Figure Description
[0023] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0024] Figure 1 This is a three-dimensional structural diagram of a compressive strength testing device for concrete test blocks according to a specific embodiment of this utility model; Figure 2 This is a three-dimensional structural diagram of the press and the pushing device in a specific embodiment of this utility model; Figure 3 This is a schematic diagram of the side structure of the press in a specific embodiment of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the side structure of the press in a specific embodiment of the present invention. Figure 2 ; Figure 5 for Figure 4Enlarged schematic diagram of the structure at point A in the middle; Figure 6 This is a schematic diagram of the side structure of the press in a specific embodiment of the present invention. Figure 3 ; Figure 7 for Figure 6 Enlarged schematic diagram of the structure at point B; Figure 8 This is a front structural diagram of the pushing device in a specific embodiment of the present utility model; Figure 9 This is a schematic diagram of the internal structure of the control cabinet in a specific embodiment of this utility model.
[0025] List of components and reference numerals: 1. Press; 11. Lower pressure plate; 12. Upper pressure plate; 13. Vertical telescopic cylinder; 14. Top plate; 15. Splash guard; 16. Splash guard door panel; 161. Fixed door panel; 162. Telescopic door panel; 163. Electric telescopic rod; 164. Hinge shaft; 165. Hinge seat; 166. Rotary motor; 167. Screw and nut mechanism; 17. Column; 18. Base; 2. Pushing device; 21. Pushing platform; 22. Pushing plate; 221. Protrusion; 222. Weight reduction groove; 23. Ball screw device; 231. Screw; 232. Nut; 24. Slide rail; 25. Slider; 3. Control cabinet; 31. Hydraulic pump; 32. Oil pipe; 33. Hydraulic valve group; 34. Controller; 35. Sensor. Detailed Implementation
[0026] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0027] Reference Figure 1-2This embodiment proposes a compressive strength testing device for concrete test blocks, including a press 1, a control cabinet 3, and a pushing device 2. The press 1 includes a lower pressure plate 11, which is placed on top of a base 18. An upper pressure plate 12 is located directly above the lower pressure plate 11, and the top of the upper pressure plate 12 is connected to a vertical telescopic cylinder 13. The vertical telescopic cylinder 13 is installed on a top plate 14. A support column 17 is provided between the base 18 and the top plate 14. The top plate 14 is rectangular, and a pair of opposite sides of the top plate 14 are provided with splash guards 15. The two splash guards 15 are vertically arranged and opposite to each other. The lower surface of the top plate 14, the upper surface of the lower pressure plate 11, and the opposite sides of the two splash guards 15 form an inlet and outlet channel. Another pair of opposite sides of the top plate 14 are provided with splash guards 16. The two splash guards 16 are vertically arranged and opposite to each other, and the splash guards 16 can open and close the inlet and outlet channel. Figure 1 and Figure 2 The arrow X in the diagram indicates the direction of material flow in and out of the material inlet / outlet channels.
[0028] Reference Figure 3-7 The splash-proof door panel has 16 opening and closing mechanisms for the access passage in the following three ways: The first type, referring to Figure 3 The splash guard 16 includes a fixed door panel 161 and a telescopic door panel 162 that are arranged in parallel and attached to each other. An electric telescopic rod 163 is installed on the fixed door panel 161. The electric telescopic rod 163 is arranged vertically and its bottom end is connected to the telescopic door panel 162. The splash guard 16 can extend and retract in the vertical direction to open and close the material inlet and outlet channels.
[0029] The second method, refer to Figure 4-5 A vertically arranged screw and nut mechanism 167 is connected between the splash guard 16 and the splash guard 15. The screw and nut mechanism 167 can move the splash guard 16 in the vertical direction under the drive of the motor, thereby opening and closing the material inlet and outlet channels.
[0030] The third type, refer to Figure 6-7 The top of the splash guard 16 is hinged to the top plate 14 via a hinge shaft 164. The hinge shaft 164 is horizontally positioned, and the splash guard 16 is fixedly connected to the hinge shaft 164. The hinge shaft 164 is rotatably connected to the side of the top plate 14 via a hinge seat 165. One end of the hinge shaft 164 is connected to a rotary motor 166, which is fixedly mounted on the splash guard 15. The rotary motor 166 can rotate in both directions, allowing the splash guard 16 to automatically open and close vertically to open and close the material inlet and outlet channels. Alternatively, the side of the splash guard 16 is hinged to the splash guard 15, allowing the splash guard 16 to open and close horizontally to open and close the material inlet and outlet channels. The principle of automatic horizontal opening and closing is the same as that of automatic vertical opening and closing, and will not be repeated here. In addition, to avoid interference between the opening and closing of the splash guard 16 and the pusher table 21 and pusher plate 22, the lower edge of the splash guard 16 needs to be raised.
[0031] Reference Figure 1-2 and Figure 8 The pushing device 2 is located on one side of the feed / discharge channel in the feed / discharge direction. The pushing device 2 includes a horizontally arranged pushing platform 21. The upper surface of the pushing platform 21 is flush with and connected to the upper surface of the lower pressure plate 11, facilitating the smooth pushing of the test block onto the lower pressure plate 11. When the splash guard 16 is closed, its bottom side is flush with the upper surface of the lower pressure plate 11, avoiding interference with the pushing platform 21. The upper surface of the pushing platform 21 is provided with a horizontally arranged pushing plate 22. The pushing plate 22 has a weight-reducing groove 222 in the middle, and the pushing plate 22 can move along the feed / discharge channel in the feed / discharge direction. The side of the pushing plate 22 facing the press 1 in the feed / discharge direction of the feed / discharge channel is the front end. The front end of the pushing plate 22 has two protrusions 221, which are arranged perpendicular to the feed / discharge channel in the feed / discharge direction. The two protrusions 221 can limit the concrete test block in the left and right directions, preventing the concrete test block from detaching from the pushing platform 21 during the pushing process. In this embodiment, the upper surface of the pusher platform 21 is provided with a ball screw device 23, which can be driven by a servo motor. The ball screw device 23 includes a screw 231 and a nut 232. The axial direction of the screw 231 is horizontally arranged along the feed direction of the feed channel, and the top of the nut 232 is connected to the pusher plate 22. The upper surface of the pusher platform 21 is provided with a slide rail 24, which extends along the feed direction of the feed channel and is slidably connected to a slider 25. The top of the slider 25 is connected to the pusher plate 22. The screw 231 and the slide rail 24 are respectively arranged on both sides of the pusher plate 22 perpendicular to the feed direction of the feed channel.
[0032] To prevent debris from accumulating between the splash guard 15 and the lower pressure plate 11, manual cleaning can be performed periodically. To further reduce debris accumulation between the splash guard 15 and the lower pressure plate 11, the distance between the two protrusions 221 can be matched to the outer width of the lower pressure plate 11, and the protrusions 211 can be made longer. Alternatively, two baffles can be installed on the push platform 21 with the moving direction consistent with the moving direction of the push plate 22, so that the distance between the two baffles matches the outer width of the lower pressure plate 11. Thus, when the push plate 22 cleans debris, the protrusions 221 or the baffles can provide a certain degree of enclosure on both sides of the lower pressure plate 11, preventing debris from falling between the splash guard 15 and the lower pressure plate 11. The focus of this solution is not to solve the problem of preventing debris accumulation between the splash guard 15 and the lower pressure plate 11; the above solutions merely provide several specific implementation methods to help reduce debris accumulation, offering a reference direction for structural optimization in practical applications.
[0033] Reference Figure 9The control cabinet 3 is equipped with a hydraulic pump 31, which is connected to the vertical telescopic cylinder 13 via an oil pipe 32. The oil pipe 32 is equipped with a hydraulic valve group 33. The control cabinet 3 is equipped with a controller 34, which is connected to the vertical telescopic cylinder 13 and the sensor 35. The controller 34 is electrically connected to the sensor 35 and the hydraulic valve group 33. Figure 9 For the sake of simplicity, those skilled in the art should understand that the hydraulic valve group 33 may include directional valves, flow valves, pressure valves, etc., and those skilled in the art are familiar with the connection methods of directional valves, flow valves, pressure valves and oil pipes 32; the sensor 35 may include limit switches, pressure sensors 35, etc., and those skilled in the art are familiar with the connection methods of limit switches, pressure sensors 35 and vertical telescopic cylinders 13.
[0034] Work process: The equipment is in its initial state, with the splash guard 16 open to allow concrete test blocks to enter. The pusher plate 22 of the pusher device 2 is located on the side of the pusher platform 21 away from the press 1.
[0035] The operator manipulates the mechanical gripper to place the concrete test block to be tested on the upper surface of the pushing platform 21, with the pushing plate 22 facing the press 1. The pushing device 2 is started, and the ball screw device 23 begins to work. The feeding plate moves towards the press 1 along the inlet and outlet direction of the material inlet and outlet channel. The pushing plate 22 pushes the concrete test block to the designated testing position on the lower pressure plate 11. During the pushing process, the cooperation of the slide rail 24 and the slider 25 provides precise guidance for the pushing plate 22, ensuring that the test block is accurately positioned. The protrusion 221 at the front end of the pushing plate 22 acts as a left and right limiter for the test block, preventing the test block from falling off the pushing platform 21.
[0036] After the test block is in place, the splash guard 16 closes according to the preset method, so that the top plate 14, the lower pressure plate 11, the splash guard 15, and the splash guard 16 together form a relatively enclosed space. The controller 34 in the control cabinet 3 issues a command, the hydraulic pump 31 starts, and supplies oil to the vertical telescopic cylinder 13 through the oil pipe 32. The hydraulic valve group 33 controls the pressure and flow of the oil. The vertical telescopic cylinder 13 drives the upper pressure plate 12 to move downward, applying pressure to the concrete test block. The sensor 35 monitors the working status of the vertical telescopic cylinder 13 in real time (such as pressure, displacement, etc.) and feeds the data back to the controller 34. Based on the data fed back by the sensor 35, the controller 34 adjusts the pressure applied by the upper pressure plate 12 by controlling the hydraulic valve group 33 until the test block is crushed.
[0037] After the test is completed, the vertical telescopic cylinder 13 drives the upper pressure plate 12 to return to its original position. Then, the splash guard 16 opens, preparing for the removal of the test block. The pushing device 2 restarts, and the pushing plate 22 moves towards the press 1, pushing the broken test block fragments out from the lower pressure plate 11. A conveyor belt or fragment chute can be installed on the side of the lower pressure plate 11 away from the pushing device 2 to transport or collect the fragments. During this process, the splash guard 15 prevents the fragments from falling to the ground from both sides.
[0038] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A compressive strength testing device for concrete test blocks, comprising a press (1), the press (1) comprising a lower pressure plate (11), an upper pressure plate (12) disposed directly above the lower pressure plate (11), the top of the upper pressure plate (12) being connected to a vertical telescopic cylinder (13), the vertical telescopic cylinder (13) being mounted on a top plate (14), characterized in that, The top plate (14) is rectangular. A pair of opposite sides of the top plate (14) are provided with splash guards (15). The two splash guards (15) are vertical and opposite to each other. The lower surface of the top plate (14), the upper surface of the lower pressure plate (11) and the opposite sides of the two splash guards (15) form a material inlet and outlet channel. Another pair of opposite sides of the top plate (14) are provided with splash guards (16). The two splash guards (16) are vertical and opposite to each other. The splash guards (16) can open and close the material inlet and outlet channel. A pushing device (2) is provided on one side of the material inlet / outlet channel in the inlet / outlet direction. The pushing device (2) includes a horizontally arranged pushing platform (21). The upper surface of the pushing platform (21) is flush with the upper surface of the lower pressure plate (11). A horizontally arranged pushing plate (22) is provided on the upper surface of the pushing platform (21). The pushing plate (22) can move along the inlet / outlet direction of the material inlet / outlet channel.
2. The compressive strength testing equipment for concrete test blocks according to claim 1, characterized in that, The splash guard (16) can extend and retract vertically to open and close the material inlet and outlet channels.
3. The compressive strength testing equipment for concrete test blocks according to claim 1, characterized in that, The splash guard (16) can move vertically to open and close the material inlet and outlet channels.
4. The compressive strength testing equipment for concrete test blocks according to claim 1, characterized in that, The top of the splash guard (16) is hinged to the top plate (14), and the splash guard (16) can be opened and closed to open and close the material inlet and outlet channels; Alternatively, the side of the splash guard (16) is hinged to the splash guard (15), and the splash guard (16) can be opened and closed to open and close the material inlet and outlet channels.
5. The compressive strength testing equipment for concrete test blocks according to claim 1, characterized in that, The upper surface of the pusher (21) is provided with a ball screw device (23), which includes a screw (231) and a nut (232). The axial direction of the screw (231) is horizontally arranged along the feed and discharge direction of the feed and discharge channel, and the top of the nut (232) is connected to the pusher plate (22).
6. The compressive strength testing equipment for concrete test blocks according to claim 5, characterized in that, The upper surface of the pusher (21) is provided with a slide rail (24), which extends along the inlet and outlet direction of the feed channel. The slide rail (24) is slidably connected to the slider (25), and the top of the slider (25) is connected to the pusher plate (22).
7. The compressive strength testing equipment for concrete test blocks according to claim 6, characterized in that, The lead screw (231) and the slide rail (24) are respectively set on both sides of the push plate (22) perpendicular to the feed and discharge channels.
8. The compressive strength testing equipment for concrete test blocks according to claim 1, characterized in that, The system includes a control cabinet (3), which contains a hydraulic pump (31). The hydraulic pump (31) is connected to the vertical telescopic cylinder (13) via an oil pipe (32), and the oil pipe (32) is equipped with a hydraulic valve group (33). The control cabinet (3) contains a controller (34), which is connected to the vertical telescopic cylinder (13) and a sensor (35). The controller (34) is electrically connected to the sensor (35) and the hydraulic valve group (33).