CN213415238U - Belt feeder straining device and mounting structure of belt feeder - Google Patents
Belt feeder straining device and mounting structure of belt feeder Download PDFInfo
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- CN213415238U CN213415238U CN202022117834.4U CN202022117834U CN213415238U CN 213415238 U CN213415238 U CN 213415238U CN 202022117834 U CN202022117834 U CN 202022117834U CN 213415238 U CN213415238 U CN 213415238U
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Abstract
The utility model relates to a belt feeder straining device, include 180 driven pulley, weight case and be used for carrying out the guide structure who leads to the vertical motion of weight case, guide structure including be suitable for with the weight case is clearance fit's ordinary direction section and be suitable for right the weight case carries out the brake direction section of friction braking, the brake direction section is located ordinary direction section below. Still relate to the mounting structure of belt feeder in addition. By arranging the guide structure, the common guide section can better guide the vertical motion of the heavy hammer box under the normal working state of the belt conveyor; because the brake guide section and the heavy hammer box have relatively large contact friction force, when the heavy hammer box falls in an accident state, the effect of slowing down the falling speed of the heavy hammer box is achieved by means of the friction force between the brake guide section and the heavy hammer box, so that the impact of the heavy hammer box on a lower platform is weakened, and the building platform is prevented from being damaged or collapsed due to impact force.
Description
Technical Field
The utility model belongs to the technical field of mechanical equipment, concretely relates to belt feeder straining device and belt feeder's mounting structure.
Background
The vertical tensioning device is one of the main components of the belt conveyor and mainly provides certain tensioning force for the normal operation of the belt conveyor; the structure is that the bottom edge conveyer belt passes through a 90-degree bend drum and then passes through a 180-degree bend drum arranged on a frame, and a heavy hammer box hung on the frame is used for tensioning the belt conveyor. The weight of the weight box is changed according to the tension of the belt, and the weight is about 5T-15T.
For a belt conveyor with a large conveying and lifting height, a building platform is generally used as an operation and maintenance platform of a vertical tensioning device. After the belt conveyor is used for a long time, when a belt breakage accident occurs, the heavy hammer box smashes towards a lower building platform in a free-falling mode, and the heavy hammer box and the building platform are in rigid collision, so that the building platform is damaged; meanwhile, the impact force of rigid collision on the building platform is theoretically close to infinity, and the impact force cannot be quantized, so that the building structure design is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a belt feeder straining device and belt feeder's mounting structure can solve prior art's partial defect at least.
The utility model relates to a belt feeder straining device, include 180 turnabout drum and be located 180 turnabout drum below and with the weight case that 180 turnabout drum is connected, its characterized in that: the heavy hammer box is characterized by further comprising a guide structure for guiding the vertical movement of the heavy hammer box, the guide structure comprises a common guide section and a brake guide section, the common guide section is suitable for being in clearance fit with the heavy hammer box, the brake guide section is suitable for performing friction braking on the heavy hammer box, and the brake guide section is located below the common guide section.
In one embodiment, the guide structure comprises two variable diameter guide rods which are respectively arranged on two sides of the heavy hammer box along the axial direction of the 180 ° direction-changing drum, the variable diameter guide rods comprise a small diameter rod section and a large diameter rod section, the two small diameter rod sections constitute the common guide section, and the two large diameter rod sections constitute the brake guide section.
In one embodiment, the two sides of the heavy hammer box are both provided with limiting supports, the limiting supports are rectangular groove type supports, a clearance fit structure is formed between the limiting supports and the small-diameter rod section, and the diameter of the large-diameter rod section is not smaller than the groove width of the limiting supports.
As one embodiment, the large-diameter rod section is a straight rod section and is connected with the corresponding small-diameter rod section through a reducing transition section; or the large-diameter rod section is a circular truncated cone-shaped rod body with the cross section diameter gradually increasing from top to bottom.
In one embodiment, a safety rope is arranged on the top of the weight box, and the other end of the safety rope is connected to a top structure above the 180 ° bend drum.
In one embodiment, at least one buffer is disposed at the bottom of the weight box.
In one embodiment, the buffer is a polyurethane buffer.
In one embodiment, the buffer is a platen polyurethane buffer or a flange polyurethane buffer.
The utility model discloses still relate to a mounting structure of belt feeder, 90 turnabout drums of belt feeder are installed on top structures, the belt feeder still be configured with as above belt feeder straining device, wherein, the brake direction section is installed on the platform basis of top structures below.
In one embodiment, a rubber pad is disposed on the platform base right below the weight box.
The utility model discloses following beneficial effect has at least:
by arranging the guide structure, the common guide section can better guide the vertical motion of the heavy hammer box under the normal working state of the belt conveyor, thereby ensuring the moving stability of the heavy hammer box and the 180-degree direction-changing roller, and also ensuring the working stability of the belt conveyor; because the brake guide section and the heavy hammer box have relatively large contact friction force, when the heavy hammer box falls in an accident state, the effect of slowing down the falling speed of the heavy hammer box is achieved by means of the friction force between the brake guide section and the heavy hammer box, so that the impact of the heavy hammer box on a lower platform is weakened, and the building platform is prevented from being damaged or collapsed due to impact force.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic view of an installation structure of a belt conveyor provided in an embodiment of the present invention;
fig. 2 is a side view of a mounting structure of a belt conveyor according to an embodiment of the present invention;
fig. 3 is a schematic view of a matching structure of the weight box and the guide rod according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Example one
As shown in fig. 1 and fig. 2, an embodiment of the present invention provides a belt conveyor tensioning device, including a 180 ° direction-changing drum 22 and a weight box 23 located below the 180 ° direction-changing drum 22 and connected to the 180 ° direction-changing drum 22, where the 180 ° direction-changing drum 22 and the weight box 23 are conventional devices in the art, and the specific structure is not described herein again, and the weight box 23 can be fixed below the 180 ° direction-changing drum 22 through a connecting member.
Further, as shown in fig. 1 and fig. 2, the belt tensioning device further comprises a guiding structure for guiding the vertical movement of the weight box 23, wherein the guiding structure comprises a common guiding section adapted to be in clearance fit with the weight box 23 and a brake guiding section adapted to perform friction braking on the weight box 23, and the brake guiding section is located below the common guiding section. The guide length of the common guide section is preferably the range of the lifting stroke of the heavy hammer box 23 when the belt conveyor normally works, the vertical movement of the heavy hammer box 23 can be better guided under the normal working state of the belt conveyor, and the movement stability of the heavy hammer box 23 and the 180-degree direction-changing drum 22 is ensured, namely the working stability of the belt conveyor is ensured; the brake guide section is connected to the lower end of the common guide section, and because the brake guide section and the heavy hammer box 23 have relatively large contact friction force, when the heavy hammer box 23 falls down in an accident state, the effect of slowing down the falling speed of the heavy hammer box 23 is achieved by means of the friction force between the brake guide section and the heavy hammer box 23, so that the impact of the heavy hammer box 23 on the lower platform 11 is weakened, and the building platform 11 is prevented from being damaged or collapsed due to impact force.
In one embodiment, the guiding structure adopts a guiding manner of the guide rods 24, and specifically, as shown in fig. 1 and fig. 2, the guiding structure comprises two variable diameter guide rods 24 respectively arranged on two sides of the weight box 23 along the axial direction of the 180 ° direction-changing drum 22, the variable diameter guide rods 24 comprise a small diameter rod section 241 and a large diameter rod section 242, the two small diameter rod sections 241 constitute the common guiding section, and the two large diameter rod sections 242 constitute the brake guiding section. The cross section of the guide rod 24 is circular, and the small-diameter rod section 241 is generally a cylindrical straight rod with a uniform cross section diameter from top to bottom, so as to ensure the guiding effect on the normal operation of the weight box 23. In one embodiment, the large-diameter rod segment 242 is also a straight rod segment with a uniform cross-sectional diameter from top to bottom, and is preferably connected with the corresponding small-diameter rod segment 241 through a reducing transition segment, so as to avoid a step formed between the small-diameter rod segment 241 and the large-diameter rod segment 242, which causes a rigid collision with the step when the weight box 23 falls down, and obviously, the reducing transition segment is in a circular truncated cone shape with a gradually increasing diameter from top to bottom; in another embodiment, the large diameter rod segment 242 is a truncated cone-shaped rod with a cross-sectional diameter gradually increasing from top to bottom. It can be understood that the weight box 23 is correspondingly provided with two guiding portions, and the two guiding portions are respectively slidably arranged on the two guide rods 24; the guiding portion may be of a sleeve type structure, in this embodiment, preferably, as shown in fig. 1 to fig. 3, both sides of the weight box 23 are provided with a limiting seat 231, the limiting seat 231 is a rectangular groove seat, a clearance fit structure is formed between the limiting seat 231 and the small-diameter rod section 241, the diameter of the large-diameter rod section 242 is not smaller than the groove width of the limiting seat 231, wherein it is better to make the diameter of the small-diameter rod section 241 slightly smaller than the groove width of the limiting seat 231, and the diameter of the large-diameter rod section 242 is slightly larger than the groove width of the limiting seat 231, when the limiting seat 231 descends to the large-diameter rod section 242, the groove wall of the limiting seat 231 contacts with the outer surface of the large-diameter rod section 242 to generate a friction force, so as to delay the falling of the weight box 23.
The bottom of the guide bar 24 is fixed on the platform base 11 under the weight box 23, and the top of the guide bar 24 can be fixed on the top structure 12 above the 180 ° direction-changing drum 22, for example, elastically connected with the corridor above the 180 ° direction-changing drum 22.
Obviously, the guiding effect and the braking effect of the counterweight housing 23 are better when the number of the guide rods 24 is larger than two. Of course, the guide structure of the guide bar 24 is not limited to the above, and for example, it is also possible to use a slide block and a slide rail, and the brake guide section is designed accordingly, which is easily realized by those skilled in the art.
Further preferably, as shown in fig. 2, a safety rope 25 is provided on the top of the weight box 23, and the other end of the safety rope 25 is connected to the top structure 12 above the 180 ° direction-changing drum 22. The length of the safety rope 25 is preferably such that: when the belt conveyor normally works, the safety pull rope 25 is in a loose state. The number of the safety ropes 25 is obviously preferably not less than two, for example, two safety ropes 25 are respectively connected to both ends of the weight box 23 along the axial direction of the drum, or four safety ropes 25 are respectively connected to four corners of the weight box 23. The safety rope 25 may be a wire rope or an elastic rope.
It will be understood that the safety rope 25 forms a first line of defense against the falling impact of the weight box 23, and the brake guide section of the above-mentioned guide structure is configured as a second line of defense against the falling impact of the weight box 23 when the weight box 23 breaks through the constraint of the safety rope 25. The two are matched to effectively slow down the falling speed of the weight box 23 and the impact force on the underlying base platform 11.
Further preferably, as shown in fig. 1 and fig. 2, at least one buffer 231 is disposed at the bottom of the weight box 23. In one embodiment, the buffer 231 is a polyurethane buffer 231, which has a good buffering effect and a long service life. The type, basic parameters, major dimensions, specifications, and inspection rules of the polyurethane buffer 231 may be implemented according to the specification "polyurethane buffer for crane" (JB/T10833-; after the type of the buffer 231 is selected, the impact force of a single buffer 231 when the weight box 23 falls and impacts the building platform 11 in the accident state is calculated according to the kinetic energy theorem according to the buffer stroke of the buffer 231, and the calculated impact force of the buffer 231 should not be greater than the maximum working load allowed to be borne by the buffer 231. Optionally, the buffer 231 is a pressure plate type polyurethane buffer 231 or a flange type polyurethane buffer 231, wherein for a belt with a small weight of the weight box 23, the buffer 231 can be the pressure plate type polyurethane buffer 231, and for a belt with a large weight or large impact head of the weight box 23, the buffer 231 can be the flange type polyurethane buffer 231. Similarly, the number of the buffers 231 is preferably plural, for example, two buffers 231 are respectively mounted on both ends of the bottom of the weight box 23 along the drum axial direction, or four buffers 231 are respectively mounted on four corners of the bottom of the weight box 23.
Example two
As shown in fig. 1 and 2, the embodiment of the present invention provides a mounting structure of a belt conveyor, wherein a 90 ° direction-changing drum 21 of the belt conveyor is mounted on a top structure 12, the belt conveyor is further provided with a belt conveyor tensioning device provided in the first embodiment, wherein the brake guiding section is installed on a platform foundation 11 below the top structure 12.
Further preferably, as shown in fig. 2, a rubber pad 111 is disposed on the platform base 11 directly below the weight box 23. The rubber pad 111 may be an industrial rubber sheet; the rubber pad 111 is deformed by itself under the impact of falling weight box 23, and has a favorable effect on reducing the impact force. The buffer 231 and the rubber pad 111 can be used as a third line of defense for preventing the falling impact of the weight box 23, so as to further protect the building platform 11, and enable the impact force of the collision between the weight box 23 and the platform foundation 11 to be quantized and controlled.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A belt conveyor tensioning device comprises a 180 DEG bend drum and a heavy hammer box which is positioned below the 180 DEG bend drum and connected with the 180 DEG bend drum, and is characterized in that: the heavy hammer box is characterized by further comprising a guide structure for guiding the vertical movement of the heavy hammer box, the guide structure comprises a common guide section and a brake guide section, the common guide section is suitable for being in clearance fit with the heavy hammer box, the brake guide section is suitable for performing friction braking on the heavy hammer box, and the brake guide section is located below the common guide section.
2. The belt tensioner of claim 1, wherein: the guide structure comprises two variable-diameter guide rods which are axially distributed on two sides of the heavy hammer box along a 180-degree direction-changing drum, each variable-diameter guide rod comprises a small-diameter rod section and a large-diameter rod section, the two small-diameter rod sections form the common guide section, and the two large-diameter rod sections form the brake guide section.
3. The belt tensioner of claim 2, wherein: the heavy hammer box is characterized in that limiting supports are arranged on two sides of the heavy hammer box and are rectangular groove type supports, a clearance fit structure is formed between the limiting supports and the small-diameter rod section, and the diameter of the large-diameter rod section is not smaller than the groove width of the limiting supports.
4. The belt tensioner of claim 2, wherein: the large-diameter rod section is a straight rod section and is connected with the corresponding small-diameter rod section through a reducing transition section; or the large-diameter rod section is a circular truncated cone-shaped rod body with the cross section diameter gradually increasing from top to bottom.
5. The belt tensioner of claim 1, wherein: and a safety pull rope is arranged at the top of the heavy hammer box, and the other end of the safety pull rope is connected to a top structure above the 180-degree bend drum.
6. The belt tensioner of claim 1, wherein: the bottom of the heavy hammer box is provided with at least one buffer.
7. The belt tensioner of claim 6, wherein: the buffer is a polyurethane buffer.
8. The belt tensioner of claim 7, wherein: the buffer is a pressing plate type polyurethane buffer or a flange type polyurethane buffer.
9. The utility model provides a mounting structure of belt feeder, 90 turnabout drums of belt feeder install on top structure which characterized in that: the belt conveyor is further provided with a belt tensioning device as claimed in any one of claims 1 to 8, wherein the brake guide section is disposed on a platform foundation beneath a roof structure.
10. The mounting structure of a belt conveyor according to claim 9, wherein: and a rubber pad is arranged on the platform foundation right below the heavy hammer box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022117834.4U CN213415238U (en) | 2020-09-24 | 2020-09-24 | Belt feeder straining device and mounting structure of belt feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022117834.4U CN213415238U (en) | 2020-09-24 | 2020-09-24 | Belt feeder straining device and mounting structure of belt feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213415238U true CN213415238U (en) | 2021-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022117834.4U Active CN213415238U (en) | 2020-09-24 | 2020-09-24 | Belt feeder straining device and mounting structure of belt feeder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213415238U (en) |
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2020
- 2020-09-24 CN CN202022117834.4U patent/CN213415238U/en active Active
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