A rapid sampling device for the entry of coarse aggregates of ready-mixed concrete

Abstract

The present invention relates to the technical field of concrete manufacturing, and particularly relates to a rapid sampling device for commercial concrete coarse aggregate entering the site. It includes a base, a support rod is provided on the base, a first hydraulic motor fixedly connected thereto is provided at the top of the support rod, a rotating frame is provided on the output shaft of the first hydraulic motor, a chute is provided below the rotating frame, a slider is provided in the chute, and a sampling mechanism fixedly connected is provided on the lower end surface of the slider. The sampling mechanism includes a second hydraulic motor, a second push rod motor is fixedly connected to the output shaft of the second hydraulic motor, a first push rod motor is provided on the side surface of the rotating frame, and the push rod of the first push rod motor is fixedly connected to the side surface of the slider. The present invention solves the problems that manual sampling is carried out on the surface of coarse aggregate, the resistance of the drill bit is large when the traditional coarse aggregate sampling device samples the interior of the whole vehicle of coarse aggregate, the sampling position is not random enough, and the samples taken are not representative.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete manufacturing, and particularly to a rapid sampling device for commercial concrete coarse aggregate entering the site. Background Art

[0002] With the tightening of national environmental protection policies, the mining of mountain stones, river sands, and pebbles has been strictly restricted. The shortage of natural resources has led to some material suppliers passing off inferior goods as good ones to seek huge profits. Inferior coarse aggregate will cause the strength and durability of the produced concrete to decline or even the concrete to be unqualified. To reduce the quality risks of concrete production enterprises, it is necessary to increase the sampling and detection frequency of the incoming coarse aggregate.

[0003] However, the sampling work of the incoming coarse aggregate in traditional concrete production enterprises mainly relies on manual labor. At the same time, the sampling personnel also need to obtain samples on the material truck. This method not only consumes a large amount of human resources, but also has a relatively high safety hazard for unprotected high-altitude operations; and manual sampling can only obtain a part of the surface of the coarse aggregate truck, and the samples obtained are not representative.

[0004] Although there are devices for detecting the quality of coarse aggregate on the market, when the drill bit of the device extends into the whole vehicle of aggregate for sampling, due to the different sizes and hardnesses of the aggregate, the resistance at the drill bit is relatively large, and it is not easy to extend into the interior of the aggregate. Moreover, the sampling position of the aggregate is not random enough, and the samples taken are not representative, failing to achieve the purpose of monitoring the quality of the whole vehicle of aggregate. Summary of the Invention

[0005] Aiming at the problems in the above technologies, the purpose of the present invention is to provide a rapid sampling device for commercial concrete coarse aggregate entering the site, so as to solve the problems that manual sampling can only be carried out on the surface of the coarse aggregate, and when the traditional coarse aggregate sampling device samples the interior of the whole vehicle of coarse aggregate, the downward movement resistance of the drill bit is large, the sampling position is not random enough, and the samples taken are not representative.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows: It includes a base, a support rod is provided on the base, a first hydraulic motor fixedly connected thereto is provided at the top of the support rod, a rotating frame is provided on the output shaft of the first hydraulic motor, a chute is provided below the rotating frame, a slider is provided in the chute, a sampling mechanism fixedly connected thereto is provided on the lower end surface of the slider, a first push rod motor is provided on the side surface of the rotating frame, and the push rod of the first push rod motor is fixedly connected to the side surface of the slider. The sampling mechanism includes a second hydraulic motor fixedly connected to the bottom end of the slider, a second push rod motor is fixedly connected to the output shaft of the second hydraulic motor, a conical drill bit is provided at the bottom of the output shaft of the second push rod motor, a conical spring is provided between the conical drill bit and the body of the second push rod motor, one end of the conical spring is fixedly connected to the upper end of the drill bit, and the other end is fixedly connected between the motor housing.

[0007] The operating principle of the present invention is as follows: When the vehicle carrying coarse aggregate stops in the detection area, the first hydraulic motor rotates the rotating frame above the coarse aggregate. At this time, the first push rod motor pushes the slider, causing the sampling structure fixed on the slider to move directly above the position where the coarse aggregate needs to be sampled. Then, the second hydraulic motor and the second push rod motor are activated. The drill bit at the bottom of the push rod of the second push rod motor rotates into the interior of the coarse aggregate. The conical spring and the conical drill bit reduce the resistance during the advancement of the push rod. As the conical spring is gradually stretched, during rotation, the coarse aggregate in the middle enters through the gaps of the conical spring. When the specified depth is reached, the push rod of the second push rod motor retracts, and the conical spring gradually changes from the stretched state to the compressed state. The aggregate in the middle of the conical spring will be sealed inside. After taking out the sample of the middle aggregate, the first hydraulic motor drives the rotating frame to rotate to the detection platform. Then, the push rod of the second push rod motor is extended to stretch the conical spring, take out the internal coarse aggregate, store it in the storage bucket, and number the storage bucket.

[0008] Furthermore, brushes for cleaning the dust in the sliding grooves are provided on both sides of the slider. The advantage is that since there is a lot of dust in the working conditions when the present invention is used, and the dust adheres to the sliding grooves, it will have a certain impact on the sliding of the slider, increase the working load of the first push rod motor, and easily damage the motor.

[0009] Furthermore, a protective shell for protecting the motor is provided around the second push rod motor. The advantage is that since the distance between the second push rod motor and the surface of the vehicle-mounted coarse aggregate is relatively close, if there are certain protrusions when the coarse aggregate is loaded onto the vehicle, the second push rod motor is likely to come into contact with the protrusions of the coarse aggregate, causing the motor to be squeezed and damaged. Setting up the protective shell can effectively prevent the second push rod motor from being squeezed.

[0010] Furthermore, the drill bit is made of wear-resistant stainless steel. The advantage is that in order for the sampling mechanism to obtain a sample from the middle position of the vehicle-mounted coarse aggregate, the drill bit needs to rotate and move up and down inside the coarse aggregate. The texture of the coarse aggregate is relatively hard, and the wear on the drill bit is relatively serious. The stainless steel drill bit has a hard material and a longer service life.

[0011] Furthermore, the conical spring is in the stretched state at the maximum stroke of the second push rod motor and in the tightly compressed state at the shortest stroke. The advantage is that when the drill bit enters the middle part of the vehicle-mounted coarse aggregate, the stroke of the second push rod motor is relatively large, and the spring is in the stretched state. It rotates under the drive of the first hydraulic motor to rotate the middle coarse aggregate into the conical spring. When the drill bit is taken out, the stroke of the second push rod motor gradually decreases, and the conical spring is gradually compressed, and the middle coarse aggregate remains in the conical spring and is carried out.

[0012] Furthermore, the second push rod motor is provided with a brush for cleaning dust on the push rod at the machine body. The advantage is that the push rod of the second push rod motor will enter the coarse aggregate and carry a lot of dust on its surface. When the push rod retracts, the brush can clean the dust on the push rod to ensure the normal operation of the second push rod motor.

[0013] Furthermore, a graphite lubricating layer for lubrication is provided on the surface of the chute. The advantage is that the graphite lubricating layer can reduce the sliding resistance and make the sliding of the slider smoother.

[0014] Furthermore, a detection platform for storing and labeling the coarse aggregate samples taken out by the sampling mechanism is provided on one side of the support rod.

[0015] Furthermore, an image acquisition system is also provided on the sampling mechanism. The advantage is that the image acquisition system can upload and record the information of the collected aggregate samples and their aggregate sample storage buckets and transmit it to the raw material management system of the factory area. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the present invention.

[0017] Figure 2 It is a front view schematic diagram of an embodiment of the present invention.

[0018] Figure 3 It is a cross-sectional view schematic diagram of an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following is a further detailed description through specific embodiments:

[0020] The reference numerals in the accompanying drawings of the specification include: base 1, support rod 2, rotating shaft 3, function frame 4, first push rod motor 5, slider 6, second hydraulic motor 7, second push rod motor 8, conical spring 9, drill bit 10, second hydraulic motor output shaft 11, second push rod motor push rod 12, first push rod motor push rod 13, chute 14, first hydraulic motor 15. It should be noted in advance that in the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The specific implementation process is as follows:

[0022] As Figure 1 and Figure 2Shown: A rapid sampling device for commercial concrete coarse aggregate entering the site, mainly including a support rod 2, a rotating frame coaxially arranged with the support rod 2, and a sampling mechanism below the rotating frame. The rotating frame and the sampling mechanism are slidably connected, and the upper end of the support rod 2 and the rotating frame are hinged.

[0023] A base 1 is provided at the lower end of the support rod 2. Threaded holes for fixed connection with the ground are provided on the base 1. The base 1 is fixed beside the road in the coarse aggregate detection area. At least one rapid sampling device for commercial concrete coarse aggregate entering the site in the present invention is provided in this coarse aggregate detection area. A first hydraulic motor 15 is provided at the upper end of the support rod 2. The output shaft of the hydraulic motor is vertically upward and is fixedly connected to the top end of the support rod 2 at the lower end. The output shaft of the first hydraulic motor 15 and the rotating shaft 3 on the rotating frame are coaxially fixedly connected. The rotating frame mainly includes a rotating shaft 3 and a functional frame 4. In this embodiment, the shape of the functional frame 4 is roughly triangular, but it is not limited to the triangular shape design.

[0024] A chute 14 is opened at the bottom of the functional frame 4. A slider 6 is slidably connected in the chute 14. A first push rod motor 5 is provided on the side of the functional frame 4. The lower end of the slider 6 is fixedly connected with a sampling mechanism. The sampling mechanism mainly consists of a second hydraulic motor 7, a second push rod motor 8, a drill bit 10 and a conical spring 9. The second hydraulic motor 7 is fixedly connected with the slider 6, and the output shaft is vertically downward. A second push rod motor 8 is fixedly connected to the output shaft of the second hydraulic motor 7. The output shaft of the push rod motor is also designed to be vertically downward. The end of the push rod of the second push rod motor 8 is provided with a drill bit 10. The drill bit 10 is made of stainless steel. The stainless steel drill bit 10 is wear-resistant and corrosion-resistant, which can improve the service life.

[0025] A conical spring 9 is provided between the upper surfaces of the second push rod motor 8 and the drill bit 10. The two ends of the conical spring 9 are fixedly connected with the second push rod motor 8 and the drill bit 10 respectively. The conical spring 9 is in a compressed state when the stroke of the second push rod motor 8 is short, and in a stretched state when the push rod stroke is large. The second push rod motor 8 drives the drill bit 10 to move into the interior of the vehicle-mounted coarse aggregate. The second hydraulic motor 7 rotates the drill bit 10. During the process of the drill bit 10 rotating downward, due to the relatively small resistance of the conical spring 9, the drill bit 10 is more likely to rotate into the interior of the coarse aggregate, making the obtained sample more representative.

[0026] As Figure 3As shown, the first hydraulic motor 15 is coaxially connected to the rotating shaft 3 of the rotating frame. The first hydraulic motor 15 drives the rotation of the rotating shaft 3. After the sampling is completed, it rotates to the detection platform. Under the action of the second push rod motor 8, the conical spring 9 is stretched, and the aggregate sample enclosed between the conical springs 9 is stored in the storage barrel on the detection platform. At the same time, the storage barrel is numbered. The image acquisition device is mounted on the sampling mechanism and can identify the number of the storage barrel into which the coarse aggregate is placed each time. By connecting the identified number information to the incoming raw material management system, the correspondence between the incoming information of the coarse aggregate and the sample information of the automatic sampling device can be realized. After the daily coarse aggregate sampling work is completed, the sample label can be printed according to the storage barrel number and sample information recorded in the raw material management system and pasted on the corresponding storage barrel to complete the daily coarse aggregate sampling work.

[0027] Preferably, brushes for cleaning the dust in the chute 14 are provided on both sides of the slider 6 to clean the dust in the chute 14.

[0028] Preferably, a protective shell for protecting the motor is provided around the second push rod motor 8, which can effectively prevent the second push rod motor 8 from being squeezed by the coarse aggregate.

[0029] Preferably, a brush for cleaning the dust on the push rod is provided at the body of the second push rod motor 8. When the push rod 12 of the second push rod motor retracts, the brush can clean the dust on the push rod 12 of the second push rod motor to ensure the normal operation of the second push rod motor 8.

[0030] Preferably, a graphite lubricating layer for lubrication is provided on the surface of the chute 14, which can reduce the sliding resistance of the slider 6 and make the sliding of the slider 6 smoother.

[0031] The above are only embodiments of the present invention. Common general knowledge such as specific structures and characteristics in the solutions is not described in detail here. It should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners described in the specification can be used to explain the content of the claims.

Claims

1. A rapid sampling device for the entry of coarse aggregate of commercial concrete, characterized in that: It includes a base, on which a support rod is provided. At the top of the support rod, a first hydraulic motor fixedly connected thereto is provided. On the output shaft of the first hydraulic motor, a rotating frame is provided. Below the rotating frame, a chute is provided. Inside the chute, a slider is provided. On the lower end surface of the slider, a sampling mechanism fixedly connected thereto is provided. On the side surface of the rotating frame, a first push rod motor is provided. The push rod of the first push rod motor is fixedly connected to the side surface of the slider. The sampling mechanism includes a second hydraulic motor fixedly connected to the bottom end of the slider. On the output shaft of the second hydraulic motor, a second push rod motor is fixedly connected. At the bottom of the output shaft of the second push rod motor, a conical drill bit is provided. Between the conical drill bit and the body of the second push rod motor, a conical spring is provided. One end of the conical spring is fixedly connected to the upper end of the drill bit, and the other end is fixedly connected to the outer shell of the motor; the conical spring is in a stretched state when the second push rod motor is at its maximum stroke and in a compressed state when at its shortest stroke. When the conical drill bit enters the middle part of the vehicle-mounted coarse aggregate, the stroke of the second push rod motor is larger, and the spring is in a stretched state, and it rotates under the drive of the first hydraulic motor to rotate the middle coarse aggregate into the conical spring. When the conical drill bit is taken out, the stroke of the second push rod motor gradually decreases, and the conical spring is gradually compressed, and the middle coarse aggregate remains in the conical spring and is carried out.

2. The rapid sampling device for ready-mixed concrete coarse aggregate entering the site according to claim 1, characterized in that: Brushes for cleaning the chute are provided on both sides of the slider.

3. The rapid sampling device for ready-mixed concrete coarse aggregate entering the site according to claim 1, wherein: A protective housing for protecting the motor is provided around the second push rod motor.

4. The rapid sampling device for the ready-mixed concrete coarse aggregate entering the site according to claim 1, characterized in that: The drill bit is a wear-resistant stainless steel drill bit.

5. A rapid sampling device for ready-mixed concrete coarse aggregate entering the site according to claim 1, characterized in that: On the body of the second push rod motor, a brush for cleaning the push rod is provided.

6. The rapid sampling device for the ready-mixed concrete coarse aggregate entering the site according to claim 1, wherein: A graphite lubricating layer for lubrication is provided on the surface of the chute.

7. The rapid sampling device for the incoming commercial concrete coarse aggregate according to claim 1, characterized in that: On one side of the support rod, a detection platform for storing and labeling the coarse aggregate samples taken out by the sampling mechanism is provided.

8. The rapid sampling device for ready-mixed concrete coarse aggregate entering the site according to claim 1, wherein: The support rod is fixed beside the approach road of the monitoring area, and the rotating frame can rotate around the support rod.

9. The rapid sampling device for ready-mixed concrete coarse aggregate entering the site according to claim 1, wherein: An image acquisition system is also provided on the sampling mechanism.

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