Pressure testing machine for concrete building materials

Abstract

The utility model relates to a pressure testing machine for a concrete building material, and aims to solve the technical problems of inconvenience in taking and cleaning a sample on a placement table and corresponding potential safety hazards in storage in the prior art. The placement table is slidably mounted at the bottom of the inner side of a protective frame, and mounting plates are fixedly mounted on the surfaces of four corners of the bottom of the inner side of the protective frame; a transmission gear is fixedly connected to the surface of the middle end of each transmission rod in a sleeved mode, and a connecting plate is vertically and fixedly installed on the side edge of the bottom of each mounting plate. Under the transmission action of the rotating screw rod on the transmission sleeve, the transmission sleeve can drive the placement table to synchronously and automatically move back and forth in the protection frame, so that an operator can conveniently replace and clean a to-be-detected concrete sample on the surface of the placement table, and meanwhile, the operation labor consumption required by a concrete test of the operator is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete detection, in particular to a pressure testing machine for concrete building materials. Background Technique

[0002] In the process of using concrete, it needs to meet certain standards before it can be used. One of the more important standards is the pressure resistance of concrete, and the detection of the pressure resistance of concrete is usually carried out through a concrete pressure testing machine.

[0003] According to the disclosed patent CN217688278U, a pressure testing machine for concrete building materials includes a workbench. A guide post and a storage block are fixedly connected to the upper end of the workbench. A support plate is fixedly connected to the upper end of the guide post. An extrusion device is slidably connected to the circumferential surface of the guide post. A protective cover is fixedly connected to the upper end of the workbench. A protective door is rotatably connected inside the protective cover through a hinge. A digital display device is fixedly connected to the right end of the protective cover. A positioning device is rotatably connected inside the protective cover. A cleaning device is arranged inside the protective cover. Through the above technical solution, the problem that most traditional pressure test devices generate a lot of dust when the concrete blocks are subjected to pressure tests and the dust is not easy to clean inside the device is solved. In the process of implementing the present utility model, the inventor found that at least the following problems in the prior art have not been solved. The problem of a lot of dust and the inability to clean it quickly during the pressure test is solved by rotatably connecting a protective door through a hinge, fixedly connecting a digital display device to the right end of the protective cover, rotatably connecting a positioning device inside the protective cover, and arranging a cleaning device inside the protective cover. During use, when the traditional pressure testing machine is in use, the placement table inside it for carrying concrete samples cannot be automatically moved in and out. As a result, when cleaning the surface of the placement table and replacing the concrete samples for the pressure test, the test personnel need to operate inside the small space inside the testing machine, which not only causes inconvenience in cleaning and taking samples, but also when the extrusion plate driven by the hydraulic cylinder above the placement table falls arbitrarily in case of an accident, it is extremely easy to cause harm to the operator and there are safety hazards. Therefore, a new technical solution needs to be designed to solve this problem. Content of the Utility Model

[0004] The purpose of the present utility model is to overcome the deficiencies of the prior art, adapt to the actual needs, and provide a pressure testing machine for concrete building materials to solve the technical problems of the current inconvenience in taking, cleaning, and storing samples on the placement table and the corresponding safety hazards.

[0005] To achieve the object of the present utility model, the technical solution adopted by the present utility model is as follows: A pressure testing machine for concrete building materials is designed, including a fixed base. A placing base is fixedly installed on the top surface of the fixed base. A protective frame is fixedly installed on the top surface of the placing base. A protective cabinet door is hinged to the side of the protective frame through a rotating shaft. Vertical support rods are fixedly installed on the top surfaces of the four corners of the top of the fixed base. An installation top plate is fixedly installed between the top surfaces of the support rods. A hydraulic push cylinder is fixedly installed on the top surface of the installation top plate. A lifting plate is movably installed on the inner top of the protective frame, and the bottom of the piston rod of the hydraulic push cylinder is detachably connected to the top surface of the lifting plate through a bolt;

[0006] A placing table is slidably installed on the inner bottom of the protective frame. Installation plates are fixedly installed on the top surfaces of the four corners of the inner bottom of the protective frame. A rotating lead screw is rotatably installed between the sides of each two groups of installation plates through a bearing. A transmission rod is fixedly installed on the side of each rotating lead screw. A transmission gear is fixedly sleeved on the middle end surface of each transmission rod. A connecting plate is vertically fixedly installed on the bottom side of the installation plate. A transmission rack is vertically fixedly installed on the bottom surface of each connecting plate, and the side of the transmission rack is meshed with the outside of the transmission gear;

[0007] A transmission sleeve is threadedly sleeved on the outer surface of each rotating lead screw. A transmission rod is fixedly installed on the outer surface of each transmission sleeve, and the outside of the transmission rod is fixedly connected to the outside of the placing table.

[0008] Preferably, insertion slots are opened on both sides of the bottom of the protective frame, and the insertion slots and the transmission racks are in the same vertical position. A detection pressing plate is fixedly installed on the bottom surface of the lifting plate.

[0009] Preferably, a hollow frame is fixedly installed on the side surface of the placing table away from the protective cabinet door. A bidirectional lead screw is rotatably installed inside the hollow frame through a bearing. Movable sleeves are threadedly sleeved on the outer surfaces of both ends of the outside of the bidirectional lead screw. Tightening plates are slidably installed on both ends of the side surface of the hollow frame close to the protective cabinet door.

[0010] Preferably, a fixed block is fixedly installed on the outer surface of each movable sleeve, and the fixed block is slidably inserted into the inside of the side of the hollow frame. The end of the fixed block away from the movable sleeve is fixedly connected to the outer surface of the tightening plate.

[0011] Preferably, limiting slots are opened at both ends of the side of the hollow frame, and the fixed block is slidably inserted into the inside of the limiting slot.

[0012] Preferably, a servo motor is fixedly installed inside the hollow frame, and the side of the transmission shaft of the servo motor is fixedly connected to the side of the bidirectional lead screw through a coupling.

[0013] Preferably, guide blocks are fixedly installed on both ends of the bottom surface of the placing table, guide grooves are provided at both ends of the inner bottom of the protective frame, and the guide blocks are slidably inserted into the guide grooves.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, connecting plates and a transmission rack with toothed blocks are provided on both sides of the bottom of the mounting plate. The transmission rod sleeved with a transmission gear is synchronously connected to the rotating lead screw through transmission. When the mounting plate is vertically moved inside the protective frame driven by the hydraulic push cylinder, the connecting plates and the transmission rack can be synchronously driven to move vertically. At the same time, under the meshing transmission of the transmission gear and the transmission rack, the rotating lead screw can rotate synchronously with the vertical movement of the mounting plate and the detection pressing plate. Then, under the rotational transmission of the rotating lead screw to the transmission sleeve, the transmission sleeve can drive the placing table to move back and forth synchronously and automatically inside the protective frame. At the same time, no corresponding toothed blocks are provided on the outer side of the connecting plate, so that when the placing table moves below the detection pressing plate, the vertical movement of the mounting plate will not affect the horizontal position of the placing table, which is convenient for the operator to replace and clean the concrete sample to be detected on the surface of the placing table, and reduces the labor consumption of the operator for concrete tests.

[0016] 2. In the present utility model, a bidirectional lead screw is provided inside the hollow frame at the top of the placing table. Under the rotational transmission of the bidirectional lead screw to the movable sleeve, when the bidirectional lead screw rotates, the movable sleeve can be driven to move synchronously towards or away from each other, driving the two pressing plates to move synchronously, so that the pressing plates can center and tightly limit the concrete sample placed on the surface of the placing table, ensuring the stability during the detection of the concrete sample and improving the detection quality of the concrete sample. Description of the Drawings

[0017] Figure 1 is the overall three-dimensional structure of the present utility model;

[0018] Figure 2 is the schematic side sectional structure of the protective frame of the present utility model;

[0019] Figure 3 is the schematic front sectional structure of the overall protective frame of the present utility model;

[0020] In the figure: 1, fixed base; 11, placing base; 12, support rod; 13, installation top plate; 14, hydraulic push cylinder; 15, protective frame; 16, protective cabinet door;

[0021] 2. Mounting plate; 21. Rotating lead screw; 22. Transmission sleeve; 23. Transmission rod; 24. Transmission gear; 25. Lifting plate; 26. Detection and extrusion plate; 27. Connecting plate; 28. Transmission rack; 29. Placing table;

[0022] 3. Hollow frame; 31. Tightening plate; 32. Movable sleeve; 33. Bi-directional lead screw; 34. Fixed block; 35. Servo motor; 36. Limiting groove;

[0023] 4. Guide groove; 41. Guide block;

[0024] 5. Insertion slot. Specific implementation manner

[0025] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments:

[0026] Embodiment 1: A pressure testing machine for concrete building materials, see Figures 1 to 3, a placing base 11 is fixedly installed on the top surface of the fixed base 1. A protective frame 15 is fixedly installed on the top surface of the placing base 11. A protective cabinet door 16 is hinged to the side of the protective frame 15 through a rotating shaft. Vertical support rods 12 are fixedly installed on the top corners of the top surface of the fixed base 1. An installation top plate 13 is fixedly installed between the top surfaces of the support rods 12. A hydraulic push cylinder 14 is fixedly installed on the top surface of the installation top plate 13. A lifting plate 25 is movably installed on the inner top of the protective frame 15, and the bottom of the piston rod of the hydraulic push cylinder 14 is detachably connected to the top surface of the lifting plate 25 through a bolt. A placing table 29 is slidably installed on the inner bottom of the protective frame 15. Installation plates 2 are fixedly installed on the four corners of the inner bottom surface of the protective frame 15. A rotating lead screw 21 is rotatably installed between the sides of every two groups of installation plates 2 through a bearing. A transmission rod 23 is fixedly installed on the side of each rotating lead screw 21. A transmission gear 24 is fixedly sleeved on the middle surface of each transmission rod 23. A connecting plate 27 is vertically fixedly installed on the bottom side of the installation plate 2. A transmission rack 28 is vertically fixedly installed on the bottom surface of each connecting plate 27, and the side of the transmission rack 28 is meshed with the outside of the transmission gear 24. A transmission sleeve 22 is threadedly sleeved on the outer surface of each rotating lead screw 21. A transmission rod 23 is fixedly installed on the outer surface of each transmission sleeve 22, and the outside of the transmission rod 23 is fixedly connected to the outside of the placing table 29. Under the meshing transmission of the transmission gear 24 and the transmission gear 24, and the connection of the connecting plate 27 and the transmission rack 28, combined with the rotational transmission of the rotating lead screw 21 to the transmission sleeve 22, the transmission sleeve 22 can drive the placing table 29 to move forward and backward synchronously and automatically inside the protective frame 15. By ensuring that when the placing table 29 moves below the detection pressing plate 26, the vertical movement of the installation plate 2 will not affect the horizontal position of the placing table 29, it is convenient for the operator to replace and clean the concrete sample to be detected on the surface of the placing table 29, and at the same time, it reduces the labor consumption of the operator for concrete tests.

[0027] Specifically, refer to Figures 1 to 3 , insertion slots 5 are opened on both sides of the bottom of the protective frame 15, and the insertion slots 5 and the transmission racks 28 are in the same vertical position. A detection pressing plate 26 is fixedly installed on the bottom surface of the lifting plate 25.

[0028] Furthermore, refer to Figures 1 to 3 , a hollow frame 3 is fixedly installed on the side surface of the placing table 29 away from the protective cabinet door 16. A bidirectional lead screw 33 is rotatably installed inside the hollow frame 3 through a bearing. Movable sleeves 32 are threadedly sleeved on both ends of the outer surface of the bidirectional lead screw 33. Tightening plates 31 are slidably installed on both ends of the side of the hollow frame 3 close to the protective cabinet door 16. By the rotational transmission of the bidirectional lead screw 33 to the movable sleeves 32, the rationality of adjusting the position of the tightening plates 31 is ensured.

[0029] It should be noted that, refer toFigures 1 to 3 , a fixing block 34 is fixedly installed on the outer surface of each movable sleeve 32, and the fixing block 34 is slidably inserted into the inner side of the hollow frame 3. One end of the fixing block 34 away from the movable sleeve 32 is fixedly connected to the outer surface of the pressing plate 31, and the transmission rationality of the movable sleeve 32 and the pressing plate 31 is ensured by the transmission action of the fixing block 34.

[0030] It should be noted that, referring to Figures 1 to 3 , a servo motor 35 is fixedly installed on the inner side of the hollow frame 3, and the side of the transmission shaft of the servo motor 35 is fixedly connected to the side of the bidirectional lead screw 33 through a coupling. Limiting grooves 36 are opened at both ends of the side of the hollow frame 3, and the fixing block 34 is slidably inserted into the limiting grooves 36. The driving rationality of the movable sleeve 32 is ensured by the rotational driving action of the servo motor 35 on the bidirectional lead screw 33.

[0031] It is worth introducing that, referring to Figures 1 to 3 , guide blocks 41 are fixedly installed on the surfaces at both ends of the bottom of the placing table 29. Guide grooves 4 are opened at both ends of the inner bottom of the protective frame 15, and the guide blocks 41 are slidably inserted into the guide grooves 4. The placing table 29 can move horizontally without side shift after being driven by the guiding and sliding action of the guide grooves 4 on the guide blocks 41.

[0032] During operation, open the protective cabinet door 16. After placing the concrete sample to be detected on the surface of the placement table 29, turn on the servo motor 35 through the external control switch. When it operates, it drives the bidirectional lead screw 33 to rotate inside the hollow frame 3. With the rotational transmission of the bidirectional lead screw 33 on the movable sleeve 32 and the guiding and limiting effect of the limiting groove 36 on the fixed block 34, the pressing plates 31 on both sides of the top surface of the placement table 29 move synchronously and horizontally towards each other. After centering and pressing and limiting the concrete sample placed on the surface of the placement table 29, start the hydraulic push cylinder 14 synchronously. When it operates, it drives the lifting plate 25 and the detection pressing plate 26 to descend vertically synchronously. After the connecting plate 27 and the transmission rack 28 on the side of the lifting plate 25 move vertically synchronously, under the meshing transmission of the transmission gear 24 and the transmission rack 28, the two rotating lead screws 21 rotate synchronously. With the rotational transmission of the rotating lead screw 21 on the transmission sleeve 22, the transmission sleeve 22 and the placement table 29 move backward synchronously and move into the protective frame 15. Until the placement table 29 is below the detection pressing plate 26, the transmission rack 28 descends and disengages from the outside of the transmission gear 24, and then the connecting plate 27 is located outside the transmission gear 24. After the lifting plate 25 descends, it will not drive the rotating lead screw 21 to rotate. Then the lifting plate 25 and the detection pressing plate 26 descend to squeeze the concrete sample carried on the surface of the placement table 29 until it is broken, thereby realizing the pressure detection of the concrete sample. After the detection is completed, under the driving action of the hydraulic push cylinder 14, the lifting plate 25, the connecting plate 27 and the transmission rack 28 are lifted vertically synchronously. Repeat the above steps to drive the rotating lead screw 21 to rotate in the reverse direction, so that the placement table 29 and the concrete debris placed on its surface can be automatically moved out of the protective frame 15, facilitating the operator to replace the concrete sample and clean the debris.

[0033] In addition, the components designed in the present utility model are all common standard components or components known to those skilled in the art. Their structures and principles can all be learned by those skilled in the art through technical manuals or obtained through conventional experimental methods. Those skilled in the art can fully implement them without further elaboration. The content protected by the present utility model does not involve improvements to the internal structure and method.

[0034] The embodiments disclosed in the present utility model are preferred embodiments, but not limited thereto. Those of ordinary skill in the art can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not depart from the spirit of the present utility model, they are all within the protection scope of the present utility model.

Claims

1. A pressure testing machine for concrete building materials, comprising a fixed base (1), characterized in that: A placing base (11) is fixedly mounted on the top surface of the fixed base (1), a protective frame (15) is fixedly mounted on the top surface of the placing base (11), a protective cabinet door (16) is hingedly connected to the side of the protective frame (15) via a rotating shaft, support rods (12) are vertically fixedly mounted on the four corner surfaces of the top of the fixed base (1), a mounting top plate (13) is fixedly mounted between the top surfaces of the support rods (12), a hydraulic push cylinder (14) is fixedly mounted on the top surface of the mounting top plate (13), a lifting plate (25) is movably mounted on the inner top of the protective frame (15), and the bottom of the piston rod of the hydraulic push cylinder (14) is detachably connected to the top surface of the lifting plate (25) via bolts; A placing platform (29) is slidably mounted on the bottom inner side of the protection frame (15); mounting plates (2) are fixedly mounted on the four corner surfaces of the bottom inner side of the protection frame (15); a rotating screw (21) is rotatably mounted between the sides of each two groups of the mounting plates (2) via a bearing; a transmission rod (23) is fixedly mounted on the side of each rotating screw rod (21); a transmission gear (24) is fixedly sleeved on the middle end surface of each transmission rod (23); a connecting plate (27) is vertically fixedly mounted on the side of the bottom of the mounting plate (2); a transmission rack (28) is vertically fixedly mounted on the bottom surface of each connecting plate (27); and the side of the transmission rack (28) is meshed with the outer side of the transmission gear (24); The outer surface of each rotating screw rod (21) is connected to a transmission sleeve (22) via a threaded sleeve, and the outer surface of each transmission sleeve (22) is fixedly mounted with a transmission rod (23), and the outer side of the transmission rod (23) is fixedly connected to the outer side of the placement platform (29).

2. A pressure testing machine for concrete building materials as claimed in claim 1, characterized in that: Both sides of the bottom of the protection frame (15) are provided with plug-in slots (5), and the plug-in slots (5) and the transmission rack (28) are in the same vertical position. A detection extrusion plate (26) is fixedly mounted on the bottom surface of the lifting plate (25).

3. A pressure testing machine for concrete building materials as claimed in claim 1, characterized in that: A hollow frame (3) is fixedly mounted on the top surface of the placement table (29) on one side away from the protective cabinet door (16); a bidirectional screw rod (33) is rotatably mounted inside the hollow frame (3) via a bearing; movable sleeves (32) are threadedly sleeved on both end surfaces of the outer side of the bidirectional screw rod (33); and a clamping plate (31) is slidably mounted on both end surfaces of the hollow frame (3) on the side close to the protective cabinet door (16).

4. A pressure testing machine for concrete building materials as claimed in claim 3, characterized in that: A fixing block (34) is fixedly mounted on the outer surface of each movable sleeve (32), and the fixing block (34) is slidably inserted into the inner side of the hollow frame (3), and one end of the fixing block (34) away from the movable sleeve (32) is fixedly connected to the outer surface of the abutting plate (31).

5. A pressure testing machine for concrete building materials as claimed in claim 3, characterized in that: Both ends of the side of the hollow frame (3) are provided with limiting grooves (36), and the fixing blocks (34) are slidably inserted into the limiting grooves (36).

6. A pressure testing machine for concrete building materials as claimed in claim 3, characterized in that: A servo motor (35) is fixedly mounted on the inner side of the hollow frame (3), and the side of the transmission shaft of the servo motor (35) is fixedly connected to the side of the bidirectional screw rod (33) via a coupling.

7. A pressure testing machine for concrete building materials as claimed in claim 1, characterized in that: Guide blocks (41) are fixedly mounted on both ends of the bottom surface of the placement platform (29), and guide grooves (4) are provided at both ends of the inner bottom of the protection frame (15), and the guide blocks (41) are slidably inserted into the guide grooves (4).

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