A sampling device for bulk material belt conveyor

Abstract

The utility model discloses a bulk material belt conveyor sampling device, which relates to the technical field of grain sampling equipment, including a mobile frame, and an adjustment mechanism, a lifting mechanism and a collecting mechanism installed on the mobile frame, wherein the adjustment mechanism is arranged at the top of the mobile frame, and the collecting mechanism is installed on the bottom surface of the top plate supported by the adjustment mechanism through the lifting mechanism, and extends vertically downward to the top of the belt conveyor, and is perpendicular to the grain conveying direction on the belt conveyor; the collecting mechanism includes a left grab and a right grab, and an opening and closing push rod is hinged on the side of the two grabs, and the two grabs can be buckled together after being driven by the opening and closing push rod to rotate inwards, so as to grasp the bulk material on the belt conveyor, and the two grabs can be separated after being rotated outwards. The utility model can directly intercept the entire cross section of the grain flow on the belt conveyor, greatly improve the representativeness of the sample, can more accurately reflect the quality status of the whole batch of grain, and improve the accuracy of the detection result.

Description

Technical Field

[0001] The utility model belongs to the technical field of grain sampling equipment, and in particular relates to a sampling device for a bulk material belt conveyor. Background Art

[0002] In the modern grain processing and storage process, bulk belt conveyors have become an indispensable and important equipment, responsible for efficient and continuous transportation of grain from production, processing to storage. However, when transporting bulk grain, it is often necessary to sample and test the grain regularly. For example, the grain after drying is transported by belt conveyors, and roller-type V-type conveyors are commonly used. Regular sampling is required to detect indicators such as bulk density, breakage rate, and moisture content of grain. The current sampling method of belt conveyors often relies on operators to directly sample on the running belt conveyor with handheld sampling tools. This method has great safety hazards. The operator may suffer accidental injuries if he is not careful. At the same time, it also increases the labor intensity of operators and reduces work efficiency. In addition, it is difficult for operators to control the sampling position and depth when sampling, resulting in that the samples taken often cannot fully represent the quality of the batch of grain. Especially in the process of grain flow, the quality and characteristics of grain at different positions will be different, and it is difficult to ensure that the sample taken comes from a complete section when sampling, resulting in the sample being unable to fully reflect the quality status of the batch of grain, thereby affecting the accuracy of the test results.

[0003] Therefore, based on the various defects and problems existing in the above-mentioned existing grain sampling methods, there is an urgent need for a sampling device that can automatically, accurately and efficiently obtain complete cross-sectional samples of belt conveyors, so as to facilitate better monitoring of grain quality. Utility Model Content

[0004] In view of the defects and problems of traditional manual grain sampling methods, such as difficulty in obtaining complete cross-section samples, insufficient sample representativeness, low efficiency and potential safety hazards, the utility model provides a bulk material belt conveyor sampling device.

[0005] The utility model solves the technical problem by adopting the following scheme: a bulk material belt conveyor sampling device comprises a moving frame, and an adjusting mechanism, a lifting mechanism and a collecting mechanism installed on the moving frame, wherein the adjusting mechanism is arranged at the top of the moving frame, and the collecting mechanism is installed on the bottom surface of the adjusting mechanism supporting top plate through the lifting mechanism, and extends vertically downward to the top of the belt conveyor, and is perpendicular to the grain conveying direction on the belt conveyor; the collecting mechanism comprises a left grab and a right grab, and the left grab and the right grab are respectively hinged to the fixed plate of the lifting mechanism through a left pin and a right pin, and the opening directions of the two grabs are arranged oppositely, and an opening and closing push rod is hinged on the side surfaces of the two grabs, and the two grabs can be buckled together after being driven to rotate inwards by the opening and closing push rod, so as to grab the bulk material on the belt conveyor, and the two grabs can be separated after being rotated outwards.

[0006] As a preferred technical solution of the utility model, the movable frame is provided with handrails, the bottom is provided with universal wheels, and the top of the movable frame is provided with an adjustment mechanism.

[0007] As an optimal technical solution of the utility model, the adjustment mechanism includes a supporting top plate, slide rails and sliders. The slide rails are installed at intervals on the top of the traveling frame. Slide blocks are slidably installed on each slide rail, and the supporting top plates are fixedly installed on the tops of the sliders on both sides.

[0008] As a preferred technical solution of the utility model, the lifting mechanism includes a lifting cylinder, which is vertically fixed on the bottom surface of the supporting top plate, and its output end extends vertically downward and is fixedly connected to two fixed plates. The two fixed plates are symmetrically provided with front and rear sides of the push rod on the lifting cylinder, and a collection mechanism is installed on the two fixed plates.

[0009] As an optimal technical solution of the utility model, the left grab includes two left side plates and an arc-shaped bottom plate, the three are welded together to form a left bucket cavity inside, and a left guard plate is fixedly welded on the outer side of the two left side plates; the left grab is hinged to the fixed plate through a left pin shaft, and the two fixed plates are clamped between the two left side plates, so that the left grab is rotatably installed on one side of the bottom of the fixed plate, the right grab has the same structure as the left grab, and is rotatably installed on the other side of the bottom of the fixed plate through a right pin shaft, and the right grab can rotate inward and outward with the right pin shaft as the center axis.

[0010] As a preferred technical solution of the utility model, the front and rear outer edges of the left pin shaft are respectively provided with a left gear, the front and rear outer edges of the right pin shaft are provided with a right gear, and the left gear is meshed with the right gear. At the same time, a gear pin shaft box is fixed on the outside of the gear and the pin shaft.

[0011] As a preferred technical solution of the utility model, the arc-shaped bottom plate of the left grab is provided with a left arc-shaped edge near the opening end, and the arc-shaped bottom plate of the right grab is provided with a right arc-shaped edge near the opening end; and the width d1 between the two left side plates on the left grab is greater than the width d2 between the two right side plates on the right grab, and the depth of the space inside the left grab is greater than the depth of the space inside the right grab.

[0012] As a preferred technical solution of the utility model, when the left grab and the right grab are docked together, the left side plate of the left grab is sleeved outside the right side plate of the right grab, and the arc bottom plate of the right grab is located in the inner cavity of the left grab and is in close contact with the arc bottom plate of the left grab.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The present invention provides a bulk material belt conveyor sampling device. By pushing a moving frame, the sampling device can be conveniently moved to the top of the belt conveyor to achieve sampling of materials at different positions. At the same time, by setting an adjustment mechanism, the sampling device is allowed to accurately sample at any position in the material flow direction, thereby improving the representativeness of the sampling.

[0015] The novel collecting mechanism 4 is composed of a left grab 43 and a right grab 42, and cooperates with the extension and retraction of the opening and closing push rod to conveniently realize the opening and closing action of the grab, and can vertically sample the material on the flow section of the belt conveyor, thereby ensuring the representativeness of the sampled material, making the detection result more accurate, and reducing the complexity of manual operation.

[0016] Moreover, the collecting mechanism in the novel method is perpendicular to the conveying direction of the grain material. It can directly intercept the entire cross-section of the grain flow on the belt conveyor, including grains at different positions and levels, thereby greatly improving the representativeness of the sample. Compared with traditional random sampling or single-point sampling, this sampling method can more accurately reflect the quality status of the entire batch of grain. Therefore, the detection and analysis results based on these samples will also be more accurate.

[0017] This new sampling device can realize automatic operation, simplify the sampling process, reduce the difficulty of operation, make the sampling process fast and accurate, improve work efficiency, and can easily adapt to different working environments and sampling needs by adjusting the height of the sliding and lifting mechanism of the supporting top plate. The collecting mechanism performs sampling above the belt conveyor, avoiding direct contact between the operator and the high-speed conveyor belt, thereby reducing safety risks. At the same time, the automated operation mode also reduces the errors and safety hazards caused by human operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the installation structure of the adjustment mechanism;

[0020] Figure 3 It is a schematic diagram of the front view structure of the collection mechanism;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the collection mechanism;

[0022] Figure 5 It is a schematic diagram of the structure of the collection mechanism when viewed from above;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the left and right grab buckets;

[0024] Figure 7 It is a structural schematic diagram of the left and right grab buckets in different usage states.

[0025] In the figure: 1-mobile frame, 11-universal wheel, 12-handrail, 2-adjusting mechanism, 21-support top plate, 22-slide rail, 23-slider, 3-lifting mechanism, 31-lifting cylinder, 32-fixed plate, 4-collecting mechanism, 41-right pin shaft, 42-right grab bucket, 421-right side plate, 422-right bucket cavity, 423-right arc edge, 424-right guard plate, 43-left grab bucket, 431-left side plate, 432-left bucket cavity, 433-left arc edge, 434-left guard plate, 435-bearing, 44-left gear, 45-right gear, 46-left pin shaft, 47-opening and closing push rod, 48-overlapping area, 5-belt conveyor. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0027] See also Figure 1-7 The utility model provides a technical solution for a bulk material belt conveyor sampling device, which can ensure that the sample is taken from a complete section; it is simple to operate, safe and reliable; it reduces the interference of human factors; and it improves the sampling efficiency and representativeness. By introducing such a sampling device, it is convenient to better monitor the quality of grain, ensure the safety of grain and meet trade needs. Example

[0028] This embodiment provides a bulk material belt conveyor sampling device, comprising a moving frame 1, and an adjusting mechanism 2, a lifting mechanism 3 and a collecting mechanism 4 installed on the moving frame. Figure 1As shown, the mobile frame 1 is provided with a handrail 12 and a universal wheel 11 at the bottom, which can drive the sampling device to move above the belt conveyor; an adjusting mechanism 2 is provided on the top of the mobile frame, and the adjusting mechanism includes a supporting top plate 21, a slide rail 22 and a slider 23, the slide rails 22 are installed at intervals on the top of the traveling frame, and a slider 23 is slidably installed on each slide rail 22, and a supporting top plate 21 is fixedly installed on the top of the sliders on both sides, so that driving the supporting top plate can make the bottom lifting mechanism drive the collecting mechanism to slide along the extension direction of the slide rail, so that the sampling operation can be performed at any position in the material flow direction above the belt conveyor.

[0029] like Figure 1 As shown, the lifting mechanism in this embodiment includes a lifting cylinder 31, which is vertically fixedly installed on the bottom surface of the supporting top plate 21, and its output end extends vertically downward and is fixedly connected to two fixed plates 32. The two fixed plates 32 are symmetrically provided with front and rear sides of the push rod on the lifting cylinder, and the collecting mechanism 4 is installed on the two fixed plates.

[0030] like Figure 2 As shown, the collecting mechanism is disposed above the belt conveyor 5 and is perpendicular to the grain conveying direction on the belt conveyor, thereby enabling sampling on the flow section on the belt conveyor, making the sampled material representative and the detection result more accurate.

[0031] like Figure 3 and Figure 4 As shown, the collecting mechanism includes a left grab 43 and a right grab 42, and the two grabs are arranged opposite to each other at the bottom of the fixed plate, that is, the opening directions are arranged opposite to each other. Specifically, the left grab includes two left side plates 431 and an arc bottom plate, which are welded together to form a left bucket cavity 432 inside, and a left guard plate 434 is fixedly welded on the outer side of the two left side plates to prevent the bulk material in the left bucket cavity from spilling out from the outside; and the tops of the two left side plates 431 are provided with shaft holes, and the shaft holes are provided with a left pin 46. The left grab is hinged to the fixed plate 32 through the left pin, and the two fixed plates are clamped between the two left side plates, so that the left grab is rotatably installed on one side of the bottom of the fixed plate, and can rotate with the left pin as the center axis. Similarly, the right grab 42 has the same structure as the left grab, and is rotatably installed on the other side of the bottom of the fixed plate 32 through the right pin 41, and the right grab can rotate inside and outside with the right pin 41 as the center axis.

[0032] A left gear 44 is mounted on the front and rear outer edges of the left pin shaft, and a right gear 45 is mounted on the front and rear outer edges of the right pin shaft. The left gear 44 meshes with the right gear 45, and a gear pin shaft box is fixed on the outer sides of the gears and the pin shaft. Figure 4As shown, an opening and closing push rod 47 is hinged on the side walls of the left and right grab buckets. The opening and closing push rod 18 is controlled by the controller to extend and retract, and is used to drive the opening and closing of the grab buckets on both sides. That is, the opening and closing push rod can drive the two grab buckets to rotate inward and then buckle together to achieve the grabbing of bulk materials on the belt conveyor. After taking the materials, the opening and closing push rod can be controlled again to cause the two grab buckets to rotate outward to achieve separation of the two to release the bulk materials.

[0033] The present invention provides a sampling device for a bulk material belt conveyor. In actual use, the mobile frame 1 can be pushed to the periphery of the belt conveyor by pushing the handrail 12, which does not affect the normal transportation of materials. The appropriate sampling position can be adjusted in a small range by driving the sliding of the supporting top plate. After the sampling position is determined, the lifting cylinder 31 is controlled by the controller to move downward and drive the collecting mechanism 4 to extend to the top of the flowing bulk material. In a natural state, the two grabs are in an outwardly expanded state. When sampling, the opening and closing push rod 47 is driven to drive the left and right grabs to rotate inward, so that the two grabs can be butted and engaged at the same time, and the bulk material can be collected through the left and right arc edges on the grabs, and the entire cross-section of the material can be dug. After sampling, the lifting cylinder can be controlled to retract upward to drive the collecting mechanism to return to the original position, or the mobile frame can be directly pushed away from the belt conveyor, and the opening and closing push rod 47 can be controlled to collect the bulk material.

[0034] The invention provides a sampling device for a bulk material belt conveyor, which replaces direct manual material collection, thereby effectively avoiding the potential safety hazards of manual sampling. Moreover, when sampling is performed by the device, sampling is basically performed on a flow cross section, which is representative and the test results are more accurate. Example

[0035] Based on Example 1, the same points as Example 1 will not be repeated here. The difference is that: Figure 5-7 As shown, in order to ensure that the two grab buckets can be more tightly interlocked during sampling and no material leakage occurs, the width and depth of the left grab bucket can be set larger than the right grab bucket in actual application, so that when the two grab buckets are interlocked for grabbing and sampling, the left side opening of the right grab bucket can be wrapped in the left bucket cavity 432 of the left grab bucket, thereby causing the two grab buckets to intersect and form an overlapping area 48.

[0036] Specifically, Figure 6 As shown, the arc bottom plate of the left grab 43 is provided with a left arc edge 433 near the opening end, and the thickness of the left arc edge decreases continuously toward the right grab, forming a blade-like structure. Similarly, the arc bottom plate of the right grab is provided with a right arc edge 423 near the opening end, and the thickness of the right arc edge 423 decreases continuously toward the left grab, also forming a blade-like structure, so as to facilitate the collection of bulk materials, and the width d1 between the two left side plates 431 on the left grab 43 is greater than the width d2 between the two right side plates 421 on the right grab (which can be as shown in FIG. Figure 5As shown in the figure, a bearing 435 with the same thickness as the side plate is installed on the left pin between the fixed plate 32 and the left side plate 431 to achieve this, or the left side plates 431 are directly set to have a width greater than the width of the left grab when they are welded and fixed to the arc-shaped bottom plate of the left grab, and the depth of the space in the left grab is greater than the depth of the space in the right grab, so that when the left grab and the right grab are butt-jointed, as shown in the figure, Figure 7 As shown in the left figure, the left side plate of the left grab is mounted outside the right side plate of the right grab, and the arc-shaped bottom plate of the right grab is located in the inner cavity of the left grab and in close contact with the arc-shaped bottom plate of the left grab, so that the left grab is embraced outside the opening end of the right grab, which not only makes it convenient to grab materials, but also avoids leakage of materials.

[0037] The new collection mechanism is set up in this way. The arc-shaped edges set on the left grab and the right grab have a blade-like structure, so that when sampling, the grab can more easily cut into the bulk material, so as to efficiently collect the material, which is particularly suitable for bulk grain with good fluidity; and the width d1 of the left grab is greater than the width d2 of the right grab, and the left side plate of the left grab can be set outside the right side plate of the right grab. When the two grabs are docked, the arc-shaped bottom plate of the right grab is located in the inner cavity of the left grab and is in close contact with it. This structure enables the two grabs to form a more stable structure when grabbing bulk materials, preventing the materials from scattering during the grabbing process. And due to the width and depth design of the left grab, when the two grabs are docked, the left grab can be "embraced" outside the opening end of the right grab. Such a design can effectively prevent the materials from overflowing from the opening end of the grab during the grabbing and transfer process, ensuring the accuracy and integrity of the sampling.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A bulk material belt conveyor sampling device, comprising a moving frame (1), and an adjusting mechanism (2), a lifting mechanism (3) and a collecting mechanism (4) mounted on the moving frame, wherein the adjusting mechanism (2) is arranged at the top of the moving frame, and is characterized in that: The collecting mechanism (4) is installed on the bottom surface of the adjusting mechanism supporting top plate (21) through the lifting mechanism, and extends vertically downward to the top of the belt conveyor (5), and is perpendicular to the grain conveying direction on the belt conveyor; the collecting mechanism comprises a left grab bucket (43) and a right grab bucket (42), the left grab bucket and the right grab bucket are respectively hinged to the fixing plate (32) of the lifting mechanism through the left pin shaft (46) and the right pin shaft (41), and the opening directions of the two grab buckets are arranged opposite to each other, and an opening and closing push rod (47) is hinged on the side of the two grab buckets, and the two grab buckets can be locked together after being driven by the opening and closing push rod to rotate inwards, so as to grasp the bulk materials on the belt conveyor, and the two grab buckets can be separated after being rotated outwards.

2. The bulk material belt conveyor sampling device according to claim 1, characterized in that: The movable frame (1) is provided with a handrail (12) on the movable frame, a universal wheel (11) at the bottom, and an adjustment mechanism (2) at the top of the movable frame.

3. The bulk material belt conveyor sampling device according to claim 2, characterized in that: The adjustment mechanism comprises a supporting top plate (21), a slide rail (22) and a slider (23); the slide rails (22) are installed at intervals on the top of the traveling frame; a slider (23) is slidably installed on each slide rail (22); and the supporting top plate (21) is fixedly installed on the top of the sliders on both sides.

4. The bulk material belt conveyor sampling device according to claim 1, characterized in that: The lifting mechanism comprises a lifting cylinder (31), the lifting cylinder (31) being fixedly mounted vertically on the bottom surface of the supporting top plate (21), and the output end of the lifting cylinder (31) extending vertically downward and fixedly connected to two fixing plates (32), the two fixing plates (32) being symmetrically provided with front and rear sides of the lifting cylinder upper push rod, and the two fixing plates being mounted with a collecting mechanism (4).

5. The bulk material belt conveyor sampling device according to claim 1, characterized in that: The left grab bucket comprises two left side plates (431) and an arc-shaped bottom plate, which are welded together to form a left bucket cavity (432) inside, and a left guard plate (434) is fixedly welded on the outer sides of the two left side plates; the left grab bucket is hinged on the fixed plate (32) through a left pin shaft, and the two fixed plates are clamped between the two left side plates, so that the left grab bucket is rotatably mounted on one side of the bottom of the fixed plate; the right grab bucket (42) has the same structure as the left grab bucket, and is rotatably mounted on the other side of the bottom of the fixed plate (32) through a right pin shaft (41), and the right grab bucket can rotate inward and outward with the right pin shaft (41) as the center axis.

6. The bulk material belt conveyor sampling device according to claim 5, characterized in that: The front and rear outer edges of the left pin shaft are respectively provided with a left gear (44), and the front and rear outer edges of the right pin shaft are provided with a right gear (45), and the left gear (44) is meshed with the right gear (45), and a gear pin shaft box is fixed on the outer sides of the gears and the pin shaft.

7. The bulk material belt conveyor sampling device according to claim 5, characterized in that: The arc-shaped bottom plate of the left grab (43) is provided with a left arc-shaped edge (433) near the opening end, and the arc-shaped bottom plate of the right grab is provided with a right arc-shaped edge (423) near the opening end; and the width d1 between the two left side plates (431) on the left grab (43) is greater than the width d2 between the two right side plates (421) on the right grab, and the depth of the space in the left grab is greater than the depth of the space in the right grab.

8. The bulk material belt conveyor sampling device according to claim 7, characterized in that: When the left grab and the right grab are butt-jointed, the left side plate of the left grab is sleeved outside the right side plate of the right grab, and the arc bottom plate of the right grab is located in the inner cavity of the left grab and in close contact with the arc bottom plate of the left grab.

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