Concrete slump detection device

Abstract

The concrete slump detection device comprises a base and a detection barrel, a bottom plate is hinged to the left side of the top of the base through a hinge, a connecting rod is hinged to the right side of the top of the bottom plate through a hinged support, a lead screw motor is fixedly installed on the right side of the top of the base, a screw rod is installed on a rotating shaft of the lead screw motor, and a self-limiting nut is in threaded connection with the screw rod; the bottom plate is hinged to the top of the base, the connecting rod is installed at the bottom of the cross rod which is controlled by the nut to move up and down, and the bottom end of the connecting rod is hinged to the top of the outer ring of the detection barrel, so that when the detection barrel is lifted upwards, the detection barrel can be lifted up and down, and the detection barrel can be lifted up and down. And the cross rod can also drive the right end of the bottom plate to be lifted and turned over through the connecting rod, so that the bottom plate has a certain inclination angle, after falling, concrete can fall on the inclined bottom plate and slide off from the bottom plate, cleaning of the concrete on the bottom plate is facilitated, and practicability is high.

Description

Technical Field

[0001] This patent relates to the technical field of concrete testing, and specifically to a concrete slump testing device. Background Art

[0002] For concrete slump testing, concrete is poured into a testing bucket and compacted, then the testing bucket is lifted. The slump is the height of the testing bucket minus the height of the top of the concrete. However, when the concrete quality is unqualified, concrete blocks are likely to fall onto the bottom plate inside the testing bucket, making it inconvenient to clean the concrete on the bottom plate. For this reason, we propose a concrete slump testing device. Content of the Utility Model

[0003] The purpose of this patent is to provide a concrete slump testing device to solve the problems raised in the above background art.

[0004] To achieve the above purpose, this patent provides the following technical solution: A concrete slump testing device includes a base and a testing bucket. The left side of the top of the base is hinged with a bottom plate through a hinge. The right side of the top of the bottom plate is hinged with a connecting rod through a hinge seat. A lead screw motor is fixedly installed on the right side of the top of the base. A lead screw is installed on the rotating shaft of the lead screw motor. A self-limiting nut is screwed on the lead screw. A cross bar is fixedly installed at the left end of the self-limiting nut. A vertical rod is fixedly installed at the left end of the cross bar. The top end of the connecting rod is hinged to the bottom of the side wall of the cross bar through a hinge seat.

[0005] An outer ring is integrally formed at the bottom of the outer side wall of the testing bucket. The bottom of the outer ring fits on the top of the bottom plate. The bottom end of the vertical rod is fixedly installed on the top of the outer ring.

[0006] Preferably, a rubber layer is fixedly installed at the bottom of the outer ring. The bottom of the rubber layer fits on the top of the bottom plate.

[0007] Preferably, the connecting rod includes a first rod body and a second rod body. The top end of the first rod body is hinged to the bottom of the side wall of the cross bar. A sliding cavity is provided inside the first rod body. A through hole is provided in the middle of the bottom wall of the sliding cavity. A slider is slidably installed on the inner side wall of the sliding cavity. The top end of the second rod body passes through the through hole and is fixedly installed at the bottom of the slider. The bottom end of the second rod body is hinged to the right side of the top of the bottom plate through a hinge seat.

[0008] Preferably, the first rod body includes a rod body and a ring. The top of the ring is fixedly installed at the bottom of the rod body.

[0009] Preferably, the self - limiting nut includes an internal - thread ring, a vertical pipe, and a moving ring. The inner side wall of the internal - thread ring is screwed on the side wall of the screw rod. The bottom end of the vertical pipe is fixedly installed on the top of the housing of the lead - screw motor. The length of the vertical pipe matches the length of the screw rod. Both the left and right ends of the side wall of the vertical pipe are provided with strip - shaped holes. Both the front and rear ends of the outer side wall of the vertical pipe are provided with wheel grooves. One end of a connecting column is fixedly installed on both the left and right ends of the inner side wall of the moving ring, and the other end of the connecting column passes through the strip - shaped hole and is fixedly installed on the outer side wall of the internal - thread ring. Limiting wheels are installed on both the front and rear ends of the inner side wall of the moving ring, and the limiting wheels are rotatably installed in the wheel grooves.

[0010] Compared with the prior art, the beneficial effects of this patent are as follows: In this patent, a bottom plate is hinged to the top of the base. A cross - bar that is controlled to move up and down by a nut is provided with a connecting rod at the bottom. The bottom end of the connecting rod is hinged to the top of the outer ring of the detection barrel. When the detection barrel is lifted upward, the cross - bar will also drive the right end of the bottom plate to lift and flip through the connecting rod, making the bottom plate have a certain inclination angle. When the concrete falls, it will fall on the inclined bottom plate and slide off the bottom plate, facilitating the cleaning of the concrete on the bottom plate, and the practicability is relatively strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the whole of this patent.

[0012] Figure 2 It is a schematic diagram of the connecting rod of this patent.

[0013] Figure 3 It is a three - dimensional view of the first rod body of this patent.

[0014] Figure 4 It is a schematic diagram of the self - limiting nut of this patent.

[0015] In the figure: 1. Base, 2. Bottom plate, 3. Connecting rod, 4. Lead - screw motor, 5. Screw rod, 6. Self - limiting nut, 7. Cross - bar, 8. Vertical rod, 9. Detection barrel, 10. Outer ring, 11. Rubber layer, 12. First rod body, 13. Sliding cavity, 14. Through - hole, 15. Slide block, 16. Second rod body, 17. Rod body, 18. Ring, 19. Internal - thread ring, 20. Vertical pipe, 21. Strip - shaped hole, 22. Wheel groove, 23. Moving ring, 24. Connecting column, 25. Limiting wheel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] Next, the technical solutions in the embodiments of this patent will be clearly and completely described in conjunction with the drawings in the embodiments of this patent. Obviously, the described embodiments are only a part of the embodiments of this patent, rather than all of the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this patent.

[0017] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 This patent provides a technical solution: a concrete slump detection device, including a base 1 and a detection barrel 9. The left side of the top of the base 1 is hinged to a bottom plate 2 through a hinge, and the right side of the top of the bottom plate 2 is hinged to a connecting rod 3 through a hinge seat. A lead screw motor 4 is fixedly installed on the right side of the top of the base 1. A lead screw 5 is installed on the rotating shaft of the lead screw motor 4. A self-limiting nut 6 is screwed on the lead screw 5. The left end of the self-limiting nut 6 is fixedly installed with a cross bar 7. The left end of the cross bar 7 is fixedly installed with a vertical rod 8. The top end of the connecting rod 3 is hinged to the bottom of the side wall of the cross bar 7 through a hinge seat;

[0018] An outer ring 10 is integrally formed at the bottom of the outer side wall of the detection barrel 9. The bottom of the outer ring 10 is attached to the top of the bottom plate 2. The bottom end of the vertical rod 8 is fixedly installed on the top of the outer ring 10.

[0019] Specifically, a rubber layer 11 is fixedly installed at the bottom of the outer ring 10. The bottom of the rubber layer 11 is attached to the top of the bottom plate 2.

[0020] The rubber layer 11 is used to increase the sealing effect between the outer ring 10 and the bottom plate 2 and prevent concrete from overflowing.

[0021] Specifically, the connecting rod 3 includes a first rod body 12 and a second rod body 16. The top end of the first rod body 12 is hinged to the bottom of the side wall of the cross bar 7. A sliding cavity 13 is provided inside the first rod body 12. A through hole 14 is provided in the middle of the bottom wall of the sliding cavity 13. A slider 15 is slidably installed on the inner side wall of the sliding cavity 13. The top end of the second rod body 16 passes through the through hole 14 and is fixedly installed at the bottom of the slider 15. The bottom end of the second rod body 16 is hinged to the right side of the top of the bottom plate 2 through a hinge seat.

[0022] When the cross bar 7 drives the detection barrel 9 to move upward, it will also drive the first rod body 12 to move upward, that is to say, the first rod body 12 and the detection barrel 9 move upward at the same time. When the bottom wall of the sliding cavity 13 contacts the bottom of the slider 15, at this time, the first rod body 12 will drive the second rod body 16 to move upward, and at the same time drive the right end of the top of the bottom plate 2 to lift, and Figure 2 the distance between the bottom wall of the sliding cavity 13 and the bottom of the slider 15 is the opening distance between the bottom of the detection barrel 9 and the bottom plate 2.

[0023] Specifically, the first rod body 12 includes a rod body 17 and a ring 18. The top of the ring 18 is fixedly installed at the bottom of the rod body 17.

[0024] By combining the second rod body 12, the rod body 17 and the ring 18, at this time, the sliding cavity 13 is located at the bottom of the rod body 17, and the through hole 14 is the middle hole of the ring 18, which is convenient for opening the sliding cavity 13 in the early stage and also convenient for installing the slider 15 in the sliding cavity 13.

[0025] Specifically, the self-limiting nut 6 includes an internal thread ring 19, a riser pipe 20, and a moving ring 23. The inner side wall of the internal thread ring 19 is screwed onto the side wall of the screw rod 5. The bottom end of the riser pipe 20 is fixedly installed on the top of the housing of the lead screw motor 4. The length of the riser pipe 20 matches the length of the screw rod 5. Bar-shaped holes 21 are provided at both the left and right ends of the side wall of the riser pipe 20. Grooves 22 are provided at both the front and rear ends of the outer side wall of the riser pipe 20. One end of a connecting column 24 is fixedly installed at both the left and right ends of the inner side wall of the moving ring 23. The other end of the connecting column 24 passes through the bar-shaped hole 21 and is fixedly installed on the outer side wall of the internal thread ring 19. Limiting wheels 25 are installed at both the front and rear ends of the inner side wall of the moving ring 23. The limiting wheels 25 are rotatably installed in the grooves 22.

[0026] The moving ring 23 is connected to the right end of the cross bar 7.

[0027] For traditional lead screw limiting structures, most of them slide the slider in the slideway on one side plate of the screw rod. The structure occupies a large space, and the limiting is sliding limiting, with large frictional wear, and the components need to be frequently replaced. By including the internal thread ring 19, the riser pipe 20, and the moving ring 23 in the self-limiting nut 6, the occupied space can be greatly reduced, the structure is compact, and the limiting is rolling limiting, which can greatly reduce the frictional effect.

[0028] Working principle: When in use, concrete is poured into the test bucket 9 and compacted by a rammer. After compaction, the top surface of the concrete needs to be flush with the top surface of the test bucket 9. Then, the lead screw motor 4 drives the screw rod 5 to rotate. Since the moving ring 23 rolls in the groove 22 through the limiting wheels 25, and the moving ring 23 is connected to the internal thread ring 19 through the connecting column 24, the internal thread ring 19 and the moving ring 23 will not rotate with the screw rod 5 and can only move upward. The moving ring 23 drives the test bucket 9 to move upward through the cross bar 7. When the concrete moves downward, the slump is the height of the test bucket 9 minus the height of the top of the concrete.

[0029] When the cross bar 7 drives the test bucket 9 to move upward, it will also drive the first rod body 12 to move upward. That is to say, the first rod body 12 and the test bucket 9 move upward simultaneously. When the bottom wall of the sliding cavity 13 contacts the bottom of the slider 15, at this time, the first rod body 12 will drive the second rod body 16 to move upward, and at the same time drive the right end of the top of the bottom plate 2 to lift, and Figure 2 the distance between the bottom wall of the middle sliding cavity 13 and the bottom of the slider 15 is the opening distance between the bottom of the test bucket 9 and the bottom plate 2. After the concrete completely falls off, it will fall on the inclined bottom plate 2 and slide off from the bottom plate 2, which is convenient for cleaning the concrete on the bottom plate 2, and has strong practicability.

[0030] It should be noted that the device structure and drawings of this patent mainly describe the principle of this patent. Based on the technical principle of this design, the settings of the power mechanism, power supply system, control system, etc. of the device are not fully described. However, on the premise that those skilled in the art understand the principle of the above patent, the specific details of its power mechanism, power supply system, and control system can be clearly obtained.

[0031] In the description of this patent, it should be understood that the orientation or positional relationship indicated by terms such as "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "center", "both ends", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; at the same time, unless otherwise clearly specified and limited, terms such as "set", "installed", "connected", "fixedly installed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0032] Although the embodiments of this patent have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of this patent. The scope of this patent is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the slump of concrete, characterized in that: It includes a base (1) and a detection barrel (9). On the left side of the top of the base (1), a bottom plate (2) is hinged through a hinge. On the right side of the top of the bottom plate (2), a connecting rod (3) is hinged through a hinge seat. On the right side of the top of the base (1), a lead screw motor (4) is fixedly installed. A lead screw (5) is installed on the rotating shaft of the lead screw motor (4). A self-limiting nut (6) is screwed on the lead screw (5). A cross bar (7) is fixedly installed at the left end of the self-limiting nut (6). A vertical rod (8) is fixedly installed at the left end of the cross bar (7). The top end of the connecting rod (3) is hinged at the bottom of the side wall of the cross bar (7) through a hinge seat; At the bottom of the outer side wall of the detection barrel (9), an outer ring (10) is integrally formed. The bottom of the outer ring (10) is attached to the top of the bottom plate (2). The bottom end of the vertical rod (8) is fixedly installed on the top of the outer ring (10).

2. The concrete slump detection device according to claim 1, characterized in that: A rubber layer (11) is fixedly installed at the bottom of the outer ring (10). The bottom of the rubber layer (11) is attached to the top of the bottom plate (2).

3. The concrete slump detection device according to claim 1, wherein: The connecting rod (3) includes a first rod body (12) and a second rod body (16). The top end of the first rod body (12) is hinged at the bottom of the side wall of the cross bar (7). A sliding cavity (13) is provided inside the first rod body (12). A through hole (14) is provided in the middle of the bottom wall of the sliding cavity (13). A slider (15) is slidably installed on the inner side wall of the sliding cavity (13). The top end of the second rod body (16) passes through the through hole (14) and is fixedly installed at the bottom of the slider (15). The bottom end of the second rod body (16) is hinged at the right side of the top of the bottom plate (2) through a hinge seat.

4. The concrete slump detection device according to claim 3, characterized in that: The first rod body (12) includes a rod body (17) and a ring (18). The top of the ring (18) is fixedly installed at the bottom of the rod body (17).

5. The concrete slump detection device according to claim 1, characterized in that: The self-limiting nut (6) includes an internal thread ring (19), a vertical pipe (20) and a moving ring (23). The inner side wall of the internal thread ring (19) is screwed on the side wall of the lead screw (5). The bottom end of the vertical pipe (20) is fixedly installed on the top of the outer shell of the lead screw motor (4). The length of the vertical pipe (20) matches the length of the lead screw (5). Strip-shaped holes (21) are provided at both the left and right ends of the side wall of the vertical pipe (20). Groove wheels (22) are provided at both the front and back ends of the outer side wall of the vertical pipe (20). One end of a connecting column (24) is fixedly installed at both the left and right ends of the inner side wall of the moving ring (23). The other end of the connecting column (24) passes through the strip-shaped hole (21) and is fixedly installed on the outer side wall of the internal thread ring (19). Limiting wheels (25) are installed at both the front and back ends of the inner side wall of the moving ring (23). The limiting wheels (25) are rotatably installed in the groove wheels (22).

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