Sectional adjustment coal scraper for conveying belt

Abstract

The invention discloses a coal scraper capable of being adjusted in a segmented mode for a conveying belt, and relates to the field of pulverized coal conveying, the coal scraper capable of being adjusted in the segmented mode for the conveying belt comprises a main adjusting assembly, an auxiliary supporting rod and a scraping assembly, and the angle of the whole scraping assembly is adjusted through the arrangement of the main adjusting assembly; the auxiliary supporting rod is mainly used for supporting an auxiliary adjusting rod of the scraping assembly, the auxiliary supporting rod can be more convenient to disassemble and overhaul when the auxiliary adjusting rod needs to be disassembled and overhauled, the main adjusting assembly comprises a fixing frame and a main supporting rod arranged on the fixing frame, the main supporting rod rotates on the fixing frame, and the main supporting rod can rotate on the fixing frame; the auxiliary supporting rod is fixedly connected with the fixing frame, the main supporting rod is sleeved with the scraping assembly, the scraping assembly is divided into a plurality of scraping units, horizontal bearings are arranged between the scraping units, and the scraping units can be finely adjusted independently. The main adjusting assembly mainly plays a role in primary adjustment, and the auxiliary adjusting rod is used for accurately adjusting each part of the scraping unit after the primary adjustment.

Description

Technical Field

[0001] The invention relates to the technical field of coal powder conveying, in particular to a segmentally adjustable coal scraper for a conveyor belt. Background Art

[0002] The belt conveyor has a simple structure, easy maintenance, low energy consumption, low cost of use, and a wide range of uses. It is a commonly used material conveying equipment in coal plants, raw material yards and other places. In the process of transporting materials, some materials will adhere to the conveyor belt, especially the coal with high viscosity and poor fluidity is more likely to adhere to the conveyor belt. When it reaches the head of the belt conveyor for unloading, the conveyor belt will bring these coal powders back to the coal outlet system, which will cause a lot of coal dust around the conveyor, which is not good for the health of workers and is prone to natural explosion of coal dust. At the same time, a large amount of coal accumulates at the bottom of the belt conveyor, which increases the workload of the operating personnel to clean up. The most important thing is that the coal with high viscosity will adhere to the drive roller, and the out-of-roundness of the drive roller will cause the conveyor belt to deviate, which will directly affect production.

[0003] At the same time, there must be a large friction between the existing coal scraper and the coal conveyor belt, so that the coal powder adhering to the coal conveyor belt can be scraped off, which increases the starting current of the drive motor and affects the service life of the drive motor; and the position of a conveyor belt coal scraper is fixed. When the amount of coal on the conveyor belt surface is large or the adhesion between the coal particles and the lower conveyor belt surface is large, the conveyor belt will fall, and the contact force between the conveyor belt coal scraper and the conveyor belt will become smaller, affecting the use effect of a conveyor belt coal scraper; when the amount of coal on the conveyor belt surface is large and fully loaded, the roller moves forward, and the conveyor belt coal scraper will not contact the conveyor belt surface. At the same time, especially for the uneven surface of the conveyor belt in the transition section (uncoiled section) at the head and tail of the tubular conveyor belt. Based on this, the present application proposes a segmented adjustable coal scraper for the conveyor belt. Summary of the invention

[0004] The present invention is proposed in view of the problems existing in the above-mentioned segmentally adjustable coal scraper for conveyor belt.

[0005] Therefore, the problem to be solved by the present invention is how to adjust the pressure of the coal scraper on the conveyor belt in sections.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A segmentally adjustable coal scraper for a conveyor belt, comprising a main adjustment assembly, including a fixed frame, and a main support rod arranged on the fixed frame, wherein the main support rod rotates on the fixed frame;

[0007] A secondary support rod, the secondary support rod is fixedly connected to the fixing frame;

[0008] The scraping assembly is sleeved on the main support rod. The scraping assembly is divided into a plurality of scraping units. A horizontal bearing is arranged between each of the scraping units, and each of the scraping units can be fine-tuned independently.

[0009] As a preferred solution of the segmentally adjustable coal scraper for the conveyor belt of the present invention, a plurality of limit pins are arranged on the main support rod, and an adjustment arm is arranged at one end of the main support rod, and the adjustment arm can control the rotation of the main support rod.

[0010] As a preferred solution of the segmentally adjustable coal scraper for the conveyor belt described in the present invention, a movable groove is provided on the adjusting arm, and a main adjusting rod is inserted in the movable groove, one end of the main adjusting rod is fixedly connected to the auxiliary support rod, and the other end is placed on the extension plate of the fixed frame.

[0011] As a preferred solution of the segmentally adjustable coal scraper for the conveyor belt of the present invention, a U-shaped groove is provided on the extension plate, and the U-shaped groove is used to place the main support rod and to limit the horizontal displacement of the main support rod.

[0012] As a preferred solution of the segmentally adjustable coal scraper for the conveyor belt described in the present invention, a first nut is provided on the main adjusting rod, as well as a first gasket and a first spring provided on one side of the first nut, the first spring is wrapped around the outer wall of the main support rod, and the first nut moves on the main support rod through rotational cooperation.

[0013] As a preferred solution of the segmentally adjustable coal scraper for the conveyor belt described in the present invention, a second gasket fixedly connected to the other end of the first spring is also provided on the main adjusting rod, and the length and width of the second gasket are both greater than the length and width of the movable groove, the second gasket is connected to the adjusting arm, and the main support rod also passes through the second gasket.

[0014] As a preferred solution of the segmentally adjustable coal scraper for the conveyor belt of the present invention, a plurality of support grooves are arranged on the secondary support rod, the support grooves penetrate the secondary support rod, and a third gasket is fixed on one side of the support grooves.

[0015] As a preferred solution of the segmentally adjustable coal scraper for the conveyor belt of the present invention, the scraping unit includes a movable cylinder sleeved on the main support rod, a limiting groove is provided on the movable cylinder, and the two side end surfaces of the limiting groove are abutted and matched with the limiting pin.

[0016] As a preferred solution of the segmentally adjustable coal scraper for the conveyor belt described in the present invention, the scraping unit also includes a scraper and an auxiliary arm arranged on the movable cylinder, the auxiliary arm is provided with a secondary adjusting rod and extends to the other side of the support groove, the secondary adjusting rod is wrapped with a second spring, one end of the second spring is connected to the third gasket on one side of the auxiliary arm, and the other end is connected to the fourth gasket, and the fourth gasket is pushed to move by the rotation of the second nut.

[0017] As a preferred solution of the segmentally adjustable coal scraper for the conveyor belt of the present invention, the ratio of the stiffness of the first spring to that of the second spring is two to one.

[0018] The beneficial effects of the present invention are as follows: through the cooperation of various components, it is effectively achieved that after the preliminary adjustment of the pressure between the coal scraper and the conveyor belt, the coal scraper can be adjusted in sections according to the surface condition of the conveyor belt, so that the pressure between each section of the scraper and the conveyor belt can be adjusted, and then, while ensuring the scraping of coal powder, the pressure can be adjusted according to the actual situation, reducing the load of the conveyor belt drive motor and ensuring that the scraper is in contact with the conveyor belt surface as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0020] Figure 1 This is a structural diagram of a segmentally adjustable coal scraper for a conveyor belt.

[0021] Figure 2 Another perspective structural diagram of the segmentally adjustable coal scraper for the conveyor belt.

[0022] Figure 3 for Figure 2 Enlarged view of point Y in the middle.

[0023] Figure 4 for Figure 2 Enlarged view of center W. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0025] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0026] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0027] Example 1

[0028] Reference Figure 1 and Figure 2 , which is the first embodiment of the present invention, provides a segmentally adjustable coal scraper for a conveyor belt, which includes a main adjusting component 100, a secondary support rod 200 and a scraping component 300. The angle of the overall scraping component 300 is adjusted by the setting of the main adjusting component 100, and the setting of the secondary support rod 200 is mainly used to support the secondary adjusting rod 301d of the scraping component 300, and this setting can be more convenient when disassembly and maintenance are required.

[0029] Specifically, the main adjustment assembly 100 includes a fixing frame 101 and a main support rod 102 disposed on the fixing frame 101 , and the main support rod 102 rotates on the fixing frame 101 .

[0030] Preferably, the secondary support rod 200 is fixedly connected to the fixing frame 101 .

[0031] Preferably, the scraping assembly 300 is sleeved on the main support rod 102, and the scraping assembly 300 is divided into a plurality of scraping units 301, and a horizontal bearing 302 is provided between each of the scraping units, and each of the scraping units can be fine-tuned independently;

[0032] The adjustment angle of the scraper 301b by the main adjustment component 100 is greater than the adjustment angle of the scraper 301b by the auxiliary adjustment rod 301d, that is, the main adjustment component 100 mainly plays a preliminary adjustment role, and the auxiliary adjustment rod 301d is used to perform precise adjustments on each part of the scraping unit 301 thereafter.

[0033] When in use, during the debugging process, the staff should first pre-adjust the second nut 301g so that the second spring 301e is in a semi-compressed state, and then adjust the first nut 102c to compress the first spring 102c-2, and then adjust the angle of the scraper assembly 300, that is, the contact pressure with the conveyor belt.

[0034] Example 2

[0035] Reference Figures 2 to 4 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0036] Specifically, a plurality of limit pins 102a are provided on the main support rod 102, and an adjustment arm 102b is provided at one end of the main support rod 102, and the adjustment arm 102b can control the rotation of the main support rod 102, and the limit pin 102a is initially located in the middle position of the limit slot 301a-1.

[0037] Preferably, a movable groove 102b - 1 is provided on the adjusting arm 102b , and a main support rod 102 is inserted in the movable groove 102b - 1 , one end of the main support rod 102 is fixedly connected to the auxiliary support rod 200 , and the other end is placed on the extension plate 101a of the fixing frame 101 .

[0038] Preferably, a U-shaped groove 101 a - 1 is provided on the extension plate 101 a , and the U-shaped groove 101 a - 1 is used to place the main support rod 102 and to limit the horizontal displacement of the main support rod 102 .

[0039] Preferably, a first nut 102c-1, a first gasket T and a first spring 102c-2 are provided on the main adjustment rod 102c, and the first spring 102c-2 is wrapped around the outer wall of the main support rod 102. The first nut 102c-1 moves on the main support rod 102 by rotating cooperation.

[0040] Preferably, the main adjusting rod 102c is also provided with a second gasket 102c-3 fixedly connected to the other end of the first spring 102c-2, and the length and width of the second gasket 102c-3 are both greater than the length and width of the movable groove 102b-1, the second gasket 102c-3 is connected to the adjusting arm 102b, and the main support rod 102 also passes through the second gasket 102c-3.

[0041] Preferably, a plurality of support grooves 200 a are provided on the secondary support rod 200 . The support grooves 200 a penetrate the secondary support rod 200 , and a third gasket 201 is fixed to one side of the support grooves 200 a .

[0042] Preferably, the scraping unit 301 comprises a movable cylinder 301a sleeved on the main support rod 102, a limiting groove 301a-1 is provided on the movable cylinder 301a, and both side end surfaces of the limiting groove 301a-1 are abutted and matched with the limiting pin 102a.

[0043] Preferably, the scraping unit 301 also includes a scraper 301b and an auxiliary arm 301c arranged on the movable cylinder 301a, the auxiliary arm 301c is provided with a secondary adjustment rod 301d and extends to the other side of the support groove 200a, the secondary adjustment rod 301d is wrapped with a second spring 301e, one end of the second spring 301e is connected to the third gasket 201 on one side of the auxiliary arm 301c, and the other end is connected to the fourth gasket 301f, and the fourth gasket 301f is pushed to move by the rotation of the second nut 301g.

[0044] Preferably, the stiffness ratio of the first spring 102c-2 to the second spring 301e is two to one.

[0045] At the same time, we can also obtain the optimal stiffness ratio of the first spring 102c-2 and the second spring 301e through experimental data, and this better ratio can make us more precise when adjusting the auxiliary adjustment rod 301d.

[0046] When in use, the staff firstly screws the second nut 301g according to the condition of the conveyor belt, and then pushes the fourth gasket 301f to compress the second spring 301e, so that the second spring 301e is firstly compressed to a certain state;

[0047] Then the staff compresses the first spring 102c-2 by screwing the first nut 102c. When the first spring 102c-2 is compressed, since the first spring 102c-2 has a rebound force, and since the other end of the first spring 102c-2 is fixedly connected to the main support rod 102, when the first spring 102c-2 is compressed, the main support rod 102 will also be pushed to rotate clockwise. As the main support rod 102 rotates, the limit pin 102a will eventually hit the end surface of the lower half of the limit groove 301a-1, and then the movable cylinder 301a will rotate, that is, the scraper 301b will produce an angular deviation, and then the scrapers 301b of all parts of the whole will be uniformly rotated by a certain angle.

[0048] Then, according to the actual situation, the staff may find that the conveyor belt may be uneven, so they adjust the scraper unit 301 at the corresponding position, that is, they screw the second nut 301g to compress the second spring 301e. Similarly, due to the rebound force of the second spring 301e, and one end of the second spring 301e is fixedly connected to the secondary support rod 200, the auxiliary arm 301c will be rotated, that is, the movable cylinder 301a will be rotated. Since the stiffness of the second spring 301e is relatively small, the pressure applied by the second spring 301e will also be very small at this time, so that the scraper 301b has a finer angle deviation, that is, each scraper unit 301 can fit the conveyor belt more closely.

[0049] By finely adjusting each scraping unit 301 individually, not only can the contact strength between the scraper 301b and the conveyor belt be just right, without increasing the load of the conveyor belt motor, but also the conveyor belt can be better protected;

[0050] At the same time, the advantage of segmented adjustment is that it can cope with uneven conveyor belts, so that the scraper 301b can fit the conveyor belt as closely as possible, and then the coal powder stuck on the conveyor belt can be removed more effectively.

[0051] It is worth mentioning that when encountering an object that is particularly tightly attached to the belt, the scraper 301b will be pushed up, but if the foreign object cannot be scraped off immediately at this time, the scraper 301b will compress the first spring 102c-2 and the second spring 301e in the opposite direction, and then be lifted up, so that the scraper 301b will not be stuck with the foreign object.

[0052] In order to obtain the optimal ratio of stiffness between the first spring 102c-2 and the second spring 301e, we can obtain it through the following experiment: first prepare a dynamometer and an inclinometer;

[0053] Experimental procedures

[0054] Rough adjustment experiment:

[0055] The first nut 102c is gradually tightened to increase the compression on the first spring 102c-2 (eg, by 0.5N each time).

[0056] Record the change in scraper angle after each force application;

[0057] Fine-tuning experiments:

[0058] After the rough adjustment is completed, the second nut 301g is gradually tightened to increase the compression of the second spring 301e (for example, by increasing by 0.05N each time).

[0059] The change in scraper angle after each force application was recorded.

[0060] Rough adjustment of experimental data

[0061]

[0062]

[0063] Fine-tuning experimental data

[0064] Force (N) Angle change (°) 0.05 1.0 0.10 2.0 0.15 3.0 0.20 4.0 0.25 5.0 0.30 6.0 0.35 7.0 0.40 8.0 0.45 9.0 0.50 10.0

[0065] First spring 102c-2 stiffness:

[0066]

[0067] Second spring 301e stiffness:

[0068]

[0069] Stiffness range and ratio

[0070] Stiffness range of the first spring 102c-2: According to experimental data, the stiffness range of the first spring 102c-2 can be set between 5.0 and 5.4 N / ° to ensure that sufficient force can be provided to achieve a larger angle change.

[0071] Stiffness range of the second spring 301e: The stiffness range of the second spring 301e can be set between 10.8 and 11.0 N / ° to ensure that fine angle adjustment can be achieved under a smaller force.

[0072] Stiffness ratio: The stiffness ratio can be calculated as:

[0073]

[0074] This means that the stiffness of the second spring 301e is approximately twice that of the coarse adjustment spring.

[0075] Summarize

[0076] Through the above experiments and data analysis, we determined the stiffness range of the first spring 102c-2 and the second spring 301 and the stiffness ratio between them. Specifically, they are as follows:

[0077] The stiffness range of the first spring 102c-2 is 5.0 to 5.4 N / °.

[0078] The stiffness range of the second spring 301 is 10.8 to 11.0 N / °.

[0079] Stiffness comparison ratio: The stiffness of the second spring 301 is about twice that of the first spring 102c-2.

[0080] These settings can ensure that the first spring 102c-2 provides a larger force to achieve initial angle adjustment, while the second spring 301 achieves fine angle adjustment under a smaller force.

[0081] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A segmentally adjustable coal scraper for a conveyor belt, characterized in that: include, A main adjustment component (100) comprises a fixing frame (101) and a main support rod (102) arranged on the fixing frame (101), wherein the main support rod (102) rotates on the fixing frame (101); A secondary support rod (200), the secondary support rod (200) being fixedly connected to the fixing frame (101); The scraping assembly (300) is sleeved on the main support rod (102). The scraping assembly (300) is divided into a plurality of scraping units (301). A horizontal bearing (302) is arranged between each of the scraping units, and each of the scraping units can be finely adjusted independently.

2. The segmentally adjustable coal scraper for conveyor belt according to claim 1, characterized in that: A plurality of limit pins (102a) are arranged on the main support rod (102), and an adjustment arm (102b) is arranged at one end of the main support rod (102), and the adjustment arm (102b) can control the rotation of the main support rod (102).

3. The segmentally adjustable coal scraper for conveyor belt according to claim 2, characterized in that: The adjusting arm (102b) is provided with a movable groove (102b-1), and a main adjusting rod (102c) is inserted into the movable groove (102b-1); one end of the main adjusting rod (102c) is fixedly connected to the auxiliary support rod (200), and the other end is placed on the extension plate (101a) of the fixing frame (101).

4. The segmentally adjustable coal scraper for conveyor belt according to claim 3, characterized in that: The extension plate (101a) is provided with a U-shaped groove (101a-1), and the U-shaped groove (101a-1) is used to place the main support rod (102) and to limit the horizontal displacement of the main support rod (102).

5. The segmentally adjustable coal scraper for conveyor belt according to claim 4, characterized in that: The main adjustment rod (102c) is provided with a first nut (102c-1), and a first gasket (T) and a first spring (102c-2) are provided on one side of the first nut (102c-1); the first spring (102c-2) is wrapped around the outer wall of the main support rod (102); and the first nut (102c-1) moves on the main support rod (102) by rotating cooperation.

6. The segmentally adjustable coal scraper for conveyor belt according to claim 5, characterized in that: The main adjustment rod (102c) is also provided with a second gasket (102c-3) fixedly connected to the other end of the first spring (102c-2), and the length and width of the second gasket (102c-3) are both greater than the length and width of the movable groove (102b-1), the second gasket (102c-3) is connected to the adjustment arm (102b), and the main support rod (102) also passes through the second gasket (102c-3).

7. The segmentally adjustable coal scraper for conveyor belt according to claim 6, characterized in that: The secondary support rod (200) is provided with a plurality of support grooves (200a), the support grooves (200a) penetrate the secondary support rod (200), and a third gasket (201) is fixed on one side of the support groove (200a).

8. The segmentally adjustable coal scraper for a conveyor belt according to claim 7, characterized in that: The scraping unit (301) comprises a movable cylinder (301a) sleeved on the main support rod (102), a limiting groove (301a-1) is provided on the movable cylinder (301a), and the two side end surfaces of the limiting groove (301a-1) are in abutment with the limiting pin (102a).

9. The segmentally adjustable coal scraper for a conveyor belt according to claim 8, characterized in that: The scraping unit (301) also includes a scraper (301b) and an auxiliary arm (301c) arranged on the movable cylinder (301a); the auxiliary arm (301c) is provided with a secondary adjustment rod (301d) and extends all the way to the other side of the support groove (200a); the secondary adjustment rod (301d) is wrapped with a second spring (301e); one end of the second spring (301e) is connected to a third gasket (201) on one side of the auxiliary arm (301c), and the other end is connected to a fourth gasket (301f); the fourth gasket (301f) is pushed to move by the rotation of the second nut (301g).

10. The segmentally adjustable coal scraper for a conveyor belt according to claim 9, characterized in that: The ratio of the stiffness of the first spring (102c-2) to that of the second spring (301e) is two to one.

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