Instrument for testing workability of self-compacting mortar

Abstract

The utility model relates to the technical field of testing instruments, in particular to a self-compacting mortar workability testing instrument which comprises a bottom plate, the upper end of the bottom plate is connected with testing equipment, the upper end of the bottom plate is fixedly connected with a vertical plate, and the left end of the vertical plate is connected with a grating through a lifting mechanism. A positioning mechanism is connected in the testing container and comprises a pressing plate, a connecting rod, an annular plate and a positioning plate, the pressing plate is placed in the testing container, the connecting rod is fixedly connected to the upper end of the pressing plate, the annular plate is fixedly connected to the end, away from the pressing plate, of the connecting rod, and the positioning plate is fixedly connected to the circumferential surface of the annular plate; and the positioning plate and the annular plate are of an integrated structure. According to the utility model, under the mutual cooperation of the positioning mechanism and the lifting mechanism, the grating can be quickly and accurately adjusted to a proper height, so that the grating can be used for measuring the self-compacting mortar when the test steel ball is just in contact with the surface of the self-compacting mortar, thereby ensuring the test precision in subsequent measurement.

Description

Technical Field

[0001] The utility model relates to the technical field of testing instruments, in particular to a self-compacting mortar workability testing instrument. Background Art

[0002] Self-compacting mortar, or self-compacting concrete, refers to a concrete mixture that relies mainly on its own weight and can fill the mold and wrap the reinforcement without vibration. It can greatly reduce the labor intensity of construction workers and shorten the construction period. The working performance of self-compacting mortar needs to be tested before it is used in actual construction.

[0003] The Chinese utility model patent application number: 202021718691.6 discloses a self-compacting mortar workability testing instrument. By setting an encoder and a grating, while the grating detects the test steel ball, the encoder performs high-precision measurements on the stretching length of the traction rope, and applies the measured data to the curve model. The self-compacting ability of the mortar is comprehensively reflected according to the duration, slope change, and integrated area of ​​the curve.

[0004] However, in order to ensure the accuracy of measurement during use, the above patent requires that the height of the grating test be at the same height as the upper surface of the mortar in the test container. At this time, not only is it necessary to frequently manually adjust the amount of mortar inside the test container, but it is also necessary to observe with the naked eye whether the height of the grating test is at the same height as the upper surface of the mortar in the test container. This is not only troublesome, but also time-consuming and labor-intensive. Therefore, it is necessary to design a self-compacting mortar workability test instrument. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a self-compacting mortar workability testing instrument.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a self-compacting mortar workability testing instrument, comprising a base plate, the upper end of the base plate is connected to a testing device, the upper end of the base plate is fixedly connected to a vertical plate, the left end of the vertical plate is connected to a grating through a lifting mechanism, the upper end of the base plate is connected to a testing container through a clamping mechanism, the testing container is located at the left end of the grating, and the testing container is placed on the upper end of the base plate, the interior of the testing container is connected to a positioning mechanism, the positioning mechanism comprises a pressing plate, a connecting rod, an annular plate and a positioning plate, a pressing plate is placed inside the testing container, the upper end of the pressing plate is fixedly connected to a connecting rod, the end of the connecting rod away from the pressing plate is fixedly connected to an annular plate, the annular plate is located on the circumferential surface of the testing container, and is movably connected to the testing container, the circumferential surface of the annular plate is fixedly connected to the positioning plate, and the positioning plate and the annular plate are an integrated structure.

[0007] Furthermore, the lower end surface of the pressure plate and the upper end surface of the positioning plate are in the same horizontal plane, the positioning plate is located directly below the grating, and the upward extension line of the right end surface of the positioning plate corresponds to the position of the detection height of the grating.

[0008] Furthermore, the clamping mechanism includes a motor, a second bidirectional threaded rod, a guide rod, a second bearing seat and a clamping plate, the upper end of the base plate is fixedly connected to the motor and the second bearing seat, the second bearing seat is internally rotatably connected to the second bidirectional threaded rod, the circumferential surface of the second bidirectional threaded rod is threadedly connected to two clamping plates, the two clamping plates are used to clamp the test container, the second bearing seat is internally fixedly connected to the guide rod, the guide rod passes through the clamping plate, and the clamping plate is slidably connected to the guide rod.

[0009] Furthermore, a positioning seat is fixedly connected to the upper end of the bottom plate, and the positioning seat is used to support the test container.

[0010] Furthermore, the lifting mechanism includes a handle, a first threaded rod and a movable seat, the left end of the vertical plate is fixedly connected to the first bearing seat, the first bearing seat is internally rotatably connected to the first threaded rod, the upper end of the first threaded rod is fixedly connected to the handle, the circumferential surface of the first threaded rod is threadedly connected to the movable seat, the movable seat is slidably connected to the vertical plate, and the grating is fixedly installed on the left end of the movable seat.

[0011] Furthermore, a stopper is fixedly connected to the circumferential surface of the test container, and a width of the stopper is smaller than a distance between the test container and the right connecting rod.

[0012] The utility model has the following beneficial effects:

[0013] Compared with the prior art, the self-compacting mortar workability testing instrument can quickly and accurately adjust the grating to a suitable height through the cooperation of the positioning mechanism and the lifting mechanism, so that the self-compacting mortar measurement work can be started from the moment the test steel ball just touches the surface of the self-compacting mortar, thereby ensuring the test accuracy during subsequent measurements; in this process, there is no need for staff to frequently adjust the amount of mortar in the test container, nor is there any need to observe the height of the upper surface of the mortar and the height of the grating test with the naked eye, which makes the overall equipment more convenient and practical to use, and saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a self-compacting mortar workability testing instrument proposed by the utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of a self-compacting mortar workability testing instrument from the right side of the utility model;

[0016] Figure 3 This is a schematic diagram of the overall structure of a self-compacting mortar workability testing instrument proposed by the utility model from a top view;

[0017] Figure 4 A self-compacting mortar workability testing instrument proposed in the utility model Figure 3 A is a schematic diagram of the enlarged structure of the middle part;

[0018] Figure 5 A self-compacting mortar workability testing instrument proposed in the utility model Figure 3 Schematic diagram of the enlarged structure of B.

[0019] Legend:

[0020] 1. Base plate; 2. Test equipment; 3. Motor; 4. Positioning seat; 5. Vertical plate; 6. Handle; 7. Test container; 8. Connecting rod; 9. Ring plate; 10. Positioning plate; 11. Clamping plate; 12. First threaded rod; 13. Stopper; 14. Moving seat; 15. Grating; 16. First bearing seat; 17. Pressing plate; 18. Second bidirectional threaded rod; 19. Second bearing seat; 20. Guide rod. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercial products unless otherwise specified.

[0022] Reference Figure 1-5 The utility model provides a self-compacting mortar workability testing instrument, including a bottom plate 1, the upper end of the bottom plate 1 is connected with a testing device 2, it should be noted that the testing device 2 is a prior art, the testing device 2 includes a support plate, a winder, an encoder, a fixed pulley, a suspension buckle, a connector, a pull rope, a testing steel ball and a traction rope, the support plate is fixedly mounted on the upper end of the vertical plate 5, the inner side of the support plate is fixedly mounted with a winder, the lower surface of the top of the support plate is fixedly mounted with a fixed pulley, the rotating shaft of the winder is rotatably connected with an encoder, the encoder The transmission shaft and the rotating shaft of the winder are kept in a relatively fixed state, a traction rope is wound around the surface of the winder, the traction rope passes through the fixed pulley and is fixedly connected with a suspension buckle, a connecting piece is buckled inside the suspension buckle, the bottom end of the connecting piece is fixedly connected with a pull rope, the bottom end of the pull rope is fixedly connected with a test steel ball for testing, and the test steel ball is located at the upper end of the test container 7; when the rotating shaft of the winder rotates following the movement of the traction rope, the encoder rotates synchronously, and the number of rotations is collected and transmitted to the server for conversion into the retracted and released length of the traction rope.

[0023] Specifically, the upper end of the bottom plate 1 is fixedly connected to the vertical plate 5, the left end of the vertical plate 5 is connected to the grating 15 through the lifting mechanism, the upper end of the bottom plate 1 is connected to the test container 7 through the clamping mechanism, the test container 7 is located at the left end of the grating 15, and the test container 7 is placed on the upper end of the bottom plate 1. The interior of the test container 7 is connected to a positioning mechanism, which includes a pressing plate 17, a connecting rod 8, an annular plate 9 and a positioning plate 10. The pressing plate 17 is placed inside the test container 7, the upper end of the pressing plate 17 is fixedly connected to the connecting rod 8, and the end of the connecting rod 8 away from the pressing plate 17 is fixedly connected to the annular plate 9, the annular plate 9 is located on the circumferential surface of the test container 7, and is movably connected to the test container 7, the circumferential surface of the annular plate 9 is fixedly connected to the positioning plate 10, and the positioning plate 10 and the annular plate 9 are an integrated structure.

[0024] During operation, firstly, mortar is loaded into the test container 7, and then the test container 7 is clamped and fixed to the upper end of the bottom plate 1 by the clamping mechanism. Since the pressing plate 17 is located in the test container 7, the pressing plate 17 will press on the top of the mortar inside the test container 7. At the same time, under the action of the connecting rod 8, the height of the annular plate 9 and the positioning plate 10 can be changed, and then the lifting mechanism can be controlled to adjust the height of the grating 15 until the detection height of the grating 15 contacts the positioning plate 10, and then the lifting mechanism is stopped. Then the annular plate 9 is rotated so that the annular plate 9 drives the positioning plate 10, the connecting rod 8 and the pressing plate 17 to rotate in the direction of the offset grating 15 until the appropriate position is reached, so that the grating 15 can be used to start the self-compacting mortar measurement work from the moment the test steel ball just contacts the surface of the self-compacting mortar, and the test steel ball is controlled to sink into the test container 7 under its own gravity. When the grating 15 detects the test steel ball, the encoder measures the stretched length of the traction rope with high precision and applies the measured data to the curve model, which comprehensively reflects the self-compacting ability of the mortar based on the duration, slope change and integrated area of ​​the curve.

[0025] Furthermore, the lower end surface of the pressing plate 17 is in the same horizontal plane as the upper end surface of the positioning plate 10, the positioning plate 10 is located directly below the grating 15, and the upward extension line of the right end surface of the positioning plate 10 corresponds to the position of the detection height of the grating 15. During operation, when the grating 15 moves to the point where it is blocked by the positioning plate 10 and cannot move, the height of the mortar inside the test container 7 is at the same height as the detection height of the grating 15, so that the grating 15 can be used to start the self-compacting mortar measurement work from the moment the test steel ball just touches the surface of the self-compacting mortar, thereby ensuring the test accuracy during subsequent measurements.

[0026] Further, the clamping mechanism includes a motor 3, a second bidirectional threaded rod 18, a guide rod 20, a second bearing seat 19 and a clamping plate 11. The upper end of the base plate 1 is fixedly connected with the motor 3 and the second bearing seat 19. The second bearing seat 19 is rotatably connected with the second bidirectional threaded rod 18. The circumferential surface of the second bidirectional threaded rod 18 is threadedly connected with two clamping plates 11. The two clamping plates 11 are used to clamp the test container 7. The second bearing seat 19 is fixedly connected with the guide rod 20. The guide rod 20 penetrates the clamping plate 11, and the clamping plate 11 is slidably connected with the guide rod 20. When working, the motor 3 can drive the second bidirectional threaded rod 18 to rotate. At this time, the two clamping plates 11 can move more steadily in the direction of approaching or moving away from each other along the guide rod 20, so as to clamp and fix the test container 7, so that the test container 7 can be stably located at the upper end of the base plate 1.

[0027] Furthermore, a positioning seat 4 is fixedly connected to the upper end of the bottom plate 1, and the positioning seat 4 is used to support the test container 7. During operation, the presence of the positioning seat 4 can enable the test container 7 to be quickly and accurately placed directly below the test steel ball.

[0028] Further, the lifting mechanism includes a handle 6, a first threaded rod 12 and a moving seat 14, the left end of the vertical plate 5 is fixedly connected to a first bearing seat 16, the first bearing seat 16 is rotatably connected to the first threaded rod 12, the upper end of the first threaded rod 12 is fixedly connected to the handle 6, the circumferential surface of the first threaded rod 12 is threadedly connected to the moving seat 14, the moving seat 14 is slidably connected to the vertical plate 5, and the grating 15 is fixedly installed at the left end of the moving seat 14. When working, rotating the handle 6 can drive the first threaded rod 12 to rotate, and at this time the moving seat 14 can drive the grating 15 to perform a lifting operation along the vertical plate 5, thereby completing the height adjustment of the grating 15.

[0029] Furthermore, a stopper 13 is fixedly connected to the circumferential surface of the test container 7, and the width of the stopper 13 is smaller than the distance between the test container 7 and the right connecting rod 8. During operation, the stopper 13 can prevent the annular plate 9 from being separated from the test container 7, and the stopper 13 can also prevent the connecting rod 8 from rotating smoothly around the test container 7.

[0030] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0031] However, what is described above is only a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. A self-compacting mortar workability testing instrument, comprising a base plate (1), characterized in that: The upper end of the bottom plate (1) is connected to a test device (2), the upper end of the bottom plate (1) is fixedly connected to a vertical plate (5), the left end of the vertical plate (5) is connected to a grating (15) via a lifting mechanism, the upper end of the bottom plate (1) is connected to a test container (7) via a clamping mechanism, the test container (7) is located at the left end of the grating (15), and the test container (7) is placed on the upper end of the bottom plate (1), the interior of the test container (7) is connected to a positioning mechanism, and the positioning mechanism includes a pressing plate (17), a connecting rod (8 ), an annular plate (9) and a positioning plate (10), a pressing plate (17) is placed inside the test container (7), the upper end of the pressing plate (17) is fixedly connected to a connecting rod (8), the end of the connecting rod (8) away from the pressing plate (17) is fixedly connected to the annular plate (9), the annular plate (9) is located on the circumferential surface of the test container (7) and is movably connected to the test container (7), the circumferential surface of the annular plate (9) is fixedly connected to the positioning plate (10), and the positioning plate (10) and the annular plate (9) are an integrated structure.

2. A self-compacting mortar workability testing instrument according to claim 1, characterized in that: The lower end surface of the pressing plate (17) and the upper end surface of the positioning plate (10) are in the same horizontal plane, the positioning plate (10) is located directly below the grating (15), and the upward extension line of the right end surface of the positioning plate (10) corresponds to the position of the detection height of the grating (15).

3. A self-compacting mortar workability testing instrument according to claim 1, characterized in that: The clamping mechanism comprises a motor (3), a second bidirectional threaded rod (18), a guide rod (20), a second bearing seat (19) and a clamping plate (11); the upper end of the base plate (1) is fixedly connected to the motor (3) and the second bearing seat (19); the interior of the second bearing seat (19) is rotatably connected to the second bidirectional threaded rod (18); the circumferential surface of the second bidirectional threaded rod (18) is threadedly connected to two clamping plates (11); the two clamping plates (11) are used to clamp the test container (7); the interior of the second bearing seat (19) is fixedly connected to the guide rod (20); the guide rod (20) passes through the clamping plate (11), and the clamping plate (11) is slidably connected to the guide rod (20).

4. A self-compacting mortar workability testing instrument according to claim 1, characterized in that: A positioning seat (4) is fixedly connected to the upper end of the bottom plate (1), and the positioning seat (4) is used to support the test container (7).

5. A self-compacting mortar workability testing instrument according to claim 1, characterized in that: The lifting mechanism comprises a handle (6), a first threaded rod (12) and a movable seat (14); the left end of the vertical plate (5) is fixedly connected to a first bearing seat (16); the first bearing seat (16) is rotatably connected to the inside of the first threaded rod (12); the upper end of the first threaded rod (12) is fixedly connected to the handle (6); the circumferential surface of the first threaded rod (12) is threadedly connected to the movable seat (14); the movable seat (14) is slidably connected to the vertical plate (5); and the grating (15) is fixedly mounted on the left end of the movable seat (14).

6. A self-compacting mortar workability testing instrument according to claim 1, characterized in that: A stopper (13) is fixedly connected to the circumferential surface of the test container (7), and the width of the stopper (13) is smaller than the distance between the test container (7) and the right connecting rod (8).

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