CN216499686U

CN216499686U - Automatic tensioning device for belt wheel synchronous chain of mine screening machine

Info

Publication number: CN216499686U
Application number: CN202122339551.9U
Authority: CN
Inventors: 石岩山; 房师涛
Original assignee: Leitai Heavy Industry Co ltd
Current assignee: Leitai Heavy Industry Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-05-13
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses a belt wheel synchronous chain automatic tensioning device of a mine screening machine, wherein the mine screening machine comprises a main body, a screen and a crushing roller which are arranged in the main body, the crushing roller comprises a first crushing roller which is positioned at the upper part of the screen and a second crushing roller which is positioned at the upper side of the first crushing roller, the first crushing roller and the second crushing roller rotate to crush ores in the main body, the crushed ores fall to the screen to be screened, the first crushing roller is driven by a first belt wheel, the second crushing roller is driven by a second belt wheel, and the first belt wheel and the second belt wheel realize synchronous rotation through a chain; the tensioning device is abutted against the chain, and the relative position of the tensioning device and the chain can be adjusted when the chain moves, so that the tensioning degree of the chain is adjusted. Through setting up overspeed device tensioner, can adjust the tensioning degree to the chain at any time according to the in service behavior of chain, simultaneously, overspeed device tensioner orientation and the chain moving direction opposite side slope set up, make contact inseparabler between overspeed device tensioner and the chain.

Description

Automatic tensioning device for belt wheel synchronous chain of mine screening machine

Technical Field

The utility model belongs to the field of ore screening, and particularly relates to an automatic tensioning device for a belt pulley synchronous chain of a mine screening machine.

Background

Mining machines are machines that are directly used for operations such as mineral mining and beneficiation. Including mining machinery and mineral processing machinery, mineral processing is a process of selecting useful minerals from collected mineral raw materials according to differences of physical properties, physicochemical properties and chemical properties of various minerals. The process is carried out in a so-called concentrating machine. The mineral processing machinery is divided into crushing, grinding, screening, sorting and dewatering machinery according to the mineral processing flow.

In the screening process, because still there is the great ore of volume in the material, consequently carry out crushing treatment once more through installing the crushing roller in the sieve separator, the quantity of crushing roller is two usually to carry out the extrusion breakage to bold ore, two crushing rollers rotate under the belt pulley drives respectively, and two band pulleys realize synchronous rotation by the chain, just can appear becoming flexible when long-time back chain that uses, lead to appearing skidding phenomenon, influence the rotation of band pulley.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects, the utility model provides the automatic belt wheel synchronous chain tensioning device of the mine screening machine, which can adjust the tensioning degree of the chain at any time according to the using condition of the chain and ensure that the chain is always in a tensioning state.

The utility model is realized by the following technical scheme:

a belt wheel synchronous chain automatic tensioning device of a mine screening machine comprises a main body, a screen and a crushing roller which are arranged in the main body, wherein the crushing roller comprises a first crushing roller positioned on the upper part of the screen and a second crushing roller positioned on the upper side of the first crushing roller; the tensioning device is abutted to the chain, the tensioning device is obliquely arranged towards the direction opposite to the moving direction of the conveyor belt, and the relative position of the tensioning device and the chain can be adjusted when the chain moves, so that the tensioning degree of the chain is adjusted.

Further, overspeed device tensioner includes the mounting of being connected with the outer wall of main part, fixes to the connecting piece of mounting and is connected to the tensioning piece of connecting piece, and overspeed device tensioner still includes the elastic component of locating the connecting piece including the cover, and tensioning piece and chain butt, chain can drive the tensioning piece and remove the deformation volume in order to change the elastic component along the connecting piece.

Further, the tensioning piece comprises a tensioning frame connected with the connecting piece and a tensioning wheel connected to the tensioning frame and abutted to the chain, and the tensioning frame is sleeved in the through hole of the connecting piece to abut to the elastic piece.

Further, the tensioning device is arranged below the chain, and the tensioning device can drive the part abutted against the chain to move upwards.

Furthermore, the inner diameter of the first belt wheel is smaller than that of the second belt wheel, the distance between the tensioning device and the first belt wheel is L, the distance between the tensioning device and the second belt wheel is L, and the L: L is 1: 1.3-1: 1.5.

The utility model has the following beneficial effects:

1. by arranging the tensioning device, the tensioning degree of the chain can be adjusted at any time according to the use condition of the chain, the chain is ensured to be always in a tensioning state, not only is the loosening caused by insufficient tensioning degree of the chain avoided, but also the fracture caused by over-tightening due to over-large tensioning degree of the chain is avoided; meanwhile, the tensioning device is obliquely arranged in the direction opposite to the moving direction of the chain, so that the tensioning device is more tightly contacted with the chain, and the tensioning effect of the tensioning device is better.

2. The tensioning frame is sleeved at the connecting piece, so that the tensioning frame can move along the connecting piece, the movement of the tensioning frame is controlled through the elastic piece conveniently to adjust the tensioning force, the tensioning wheel is abutted against the chain, and the tensioning wheel can also rotate in the moving process of the chain, so that the sliding friction is formed between the tensioning wheel and the chain, and the influence of the tensioning piece on the movement of the chain is reduced; simultaneously, at the in-process that the chain removed, just can drive the take-up pulley and rotate, when card pause appears in first band pulley and second band pulley, also can drive the chain and continue to move through the inertia of take-up pulley to slow down the card pause phenomenon that the chain goes out.

Drawings

FIG. 1 is a schematic diagram illustrating the structure of an exemplary embodiment of the present invention;

fig. 2 is a schematic bottom view of fig. 1.

Reference numerals:

1. the main part, 2, first band pulley, 3, second band pulley, 4, chain, 5, overspeed device tensioner, 51, mounting, 52, connecting piece, 53, tensioning member, 531, tensioning frame, 532, take-up pulley, 54, elastic component.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms of orientation such as left, right, up, down, front and back in the embodiments of the present invention are only relative concepts or are referred to a normal use state of the product, i.e., a traveling direction of the product, and should not be considered as limiting.

In addition, the dynamic terms such as "relative movement" mentioned in the embodiments of the present invention include not only a positional change but also a movement in which a state changes without a relative change in position such as rotation or rolling.

Finally, it is noted that when an element is referred to as being "on" or "disposed" to another element, it can be on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

As shown in fig. 1 and 2, the automatic tensioning device 5 for the belt wheel synchronous chain 4 of the mine screening machine comprises a main body 1, a screen and a crushing roller which are arranged in the main body 1, wherein the crushing roller comprises a first crushing roller positioned on the upper part of the screen and a second crushing roller positioned on the upper side of the first crushing roller, the first crushing roller and the second crushing roller rotate to crush ores in the main body 1, the crushed ores fall to the screen to be screened, the first crushing roller is driven by a first belt wheel 2, the second crushing roller is driven by a second belt wheel 3, and the first belt wheel 2 and the second belt wheel 3 synchronously rotate through the chain 4; the tensioning device 5 is abutted against the chain 4, the tensioning device 5 is obliquely arranged in the direction opposite to the moving direction of the conveyor belt, and the relative position of the tensioning device 5 and the chain 4 can be adjusted when the chain 4 moves, so that the tensioning degree of the chain 4 can be adjusted; the first crushing roller and the second crushing roller can crush large ores between the first crushing roller and the second crushing roller in the rotating process so as to be convenient for sieving the ores, a feed port for the ores to enter is formed in the main body 1, the ores enter the screen from the feed port, and the screen conducts sieving treatment on the ores on the screen through vertical vibration, wherein the first crushing roller is positioned on the upper portion of the screen, the second crushing roller is positioned on the upper portion of the first crushing roller when being arranged so as to form a gap between the first crushing roller and the second crushing roller, the large ores can be crushed into small ores under the rotation of the first crushing roller and the second crushing roller after reaching the space between the first crushing roller and the second crushing roller, crushed materials are sieved from the screen, and the ores move along with the screen so as to conduct subsequent treatment, wherein the first crushing roller and the second crushing roller are respectively driven by the first belt wheel 2 and the second belt wheel 3, therefore, when the first crushing roller and the second crushing roller rotate, the first belt wheel 2 and the second belt wheel 3 also rotate, when the first crushing roller and the second crushing roller generate jamming in crushing, the jamming can be fed back to the positions of the first belt wheel 2 and the second belt wheel 3, as the first belt wheel 2 and the second belt wheel 3 synchronously rotate through the chain 4, the position of the chain 4 is easy to generate relative sliding, the loose installation between the chain 4 and the first belt wheel 2 and the second belt wheel 3 is easy to generate after a long time, and the tensioning device 5 is arranged, so that the tensioning degree of the chain 4 can be adjusted at any time according to the use condition of the chain 4, the chain 4 is ensured to be always in a tensioning state, the loosening caused by insufficient tensioning degree of the chain 4 is avoided, and the fracture caused by too tight tightening due to too large tensioning degree of the chain 4 is also avoided; meanwhile, the tensioning device 5 is obliquely arranged towards the direction opposite to the moving direction of the chain 4, so that the tensioning device 5 is more tightly contacted with the chain 4, and the tensioning effect of the tensioning device 5 is better.

It can be understood that fig. 1 and fig. 2 are schematic partial structural diagrams of the outer side of the mine screening machine, and are used for explaining the structure of the tensioning device 5, specifically, the transmission connection between the belt pulley and the crushing roller, and the structure and the position relationship of the screen and the crushing roller in the mine screening machine can be referred to in the prior art, and are not described herein again.

When screening the ore through this application, the ore that will gather drops into in the main part 1 from the feed inlet in the main part 1, the fritter ore is along with the screen cloth downstream under the action of gravity, and the screen cloth is in the state of constantly vibrating, thereby realize the screening, and after the bold ore enters into in the main part 1, can be blockked by first crushing roller and second crushing roller, and first crushing roller and second crushing roller are in the rotation state equally, therefore, can produce the extrusion so that the bold ore splits into the fritter ore and falls into on the screen cloth to the bold ore, can understand, main part 1 has the feed inlet that supplies the ore to get into, it is corresponding, also can supply the discharge gate that the ore shifted out, and feed inlet and discharge gate set up the both sides at main part 1 relatively, the ore on the screen cloth is discharged by the discharge gate after the screening and realize subsequent processing.

In this application, in order to strengthen the crushing effect of first crushing roller and second crushing roller, can all set up broken tooth on first crushing roller and second crushing roller, like this, can enough crowd the bits with the ore through the extrusion between first crushing roller and the second crushing roller, simultaneously break through broken tooth and ore contact, can understand, for lasting feeding when feeding into main part 1, and the screen cloth slope sets up, therefore, the ore that is located between first crushing roller and the second crushing roller can receive the extrusion of the big piece of ore in rear, thereby make the ore can keep between first crushing roller and second crushing roller, until accomplishing the breakage.

Preferably, the second crushing roller is located the oblique top of first crushing roller, and the position of second crushing roller apart from the feed inlet is greater than the position of first crushing roller apart from the feed inlet, like this, because the effect of self gravity removes the bold ore can make progress towards the second crushing roller when reacing first crushing roller in feed inlet department, and the second crushing roller is far away for the position of first crushing roller apart from the feed inlet, consequently, also can block bold ore, prevent that bold ore from just being discharged by the discharge gate after not broken.

Preferably, the tensioning device 5 is arranged below the chain 4, and the portion, which abuts against the chain 4, can be driven by the tensioning device 5 to move upwards; the chain 4 drives the first belt wheel 2 and the second belt wheel 3 to synchronously rotate, therefore, the loose edge of the chain 4 is located below the chain 4 under the action of gravity, and therefore the tensioning device 5 is located outside the chain 4 and abuts against one side of the loose edge, and the tensioning device 5 is convenient to tension.

The tensioning device 5 comprises a fixed piece 51 connected with the outer wall of the main body 1, a connecting piece 52 fixed to the fixed piece 51 and a tensioning piece 53 connected to the connecting piece 52, the tensioning device 5 further comprises an elastic piece 54 sleeved on the connecting piece 52, the tensioning piece 53 is abutted against the chain 4, and the chain 4 can drive the tensioning piece 53 to move along the connecting piece 52 so as to change the deformation amount of the elastic piece 54; the fixing part 51 provides a basis for the installation of the connecting part 52 and the tensioning part 53, the fixing part 51 extends outwards from the outer wall of the main body 1, the connecting part 52 is fixed at the fixing part 51 and extends towards the chain 4, the connecting part 52 plays a role in reversing, thereby facilitating the abutting of the tensioning part 53 and the chain 4, the elastic part 54 is sleeved at the connecting part 52, as can be understood, in order to enable the tensioning part 53 to be always in the abutting state with the chain 4 so as to tension the chain 4, the elastic part 54 is in a compression state, thereby generating an elastic force pressing the tensioning part 53 towards the direction of the chain 4, when the chain 4 is loosened and the chain 4 cannot be matched with the elastic force generated by the elastic part 54, the elastic part 54 can rebound and drive the tensioning part 53 to further move towards the chain 4, and thereby adjusting the tensioning force of the chain 4.

The tension member 53 comprises a tension frame 531 connected with the connecting member 52 and a tension wheel 532 connected to the tension frame 531 and abutted with the chain 4, the tension frame 531 forming a through hole sleeved on the connecting member 52 to abut with the elastic member 54; the tensioning frame 531 is sleeved at the connecting piece 52, so that the tensioning frame 531 can move along the connecting piece 52, the movement of the tensioning frame 531 is controlled through the elastic piece 54 so as to adjust the tensioning force, the tensioning wheel 532 is abutted against the chain 4, and the tensioning wheel 532 can also rotate in the moving process of the chain 4, so that the sliding friction is formed between the tensioning wheel 532 and the chain 4, and the influence of the tensioning piece 53 on the movement of the chain 4 is reduced; simultaneously, at the in-process that chain 4 removed, just can drive take-up pulley 532 and rotate, when the card pause appears in first band pulley 2 and second band pulley 3, also can drive chain 4 through the inertia of take-up pulley 532 and continue to move to slow down the card pause phenomenon that chain 4 goes out.

It can be understood that the tensioning device 5 is inclined in the direction opposite to the moving direction of the chain 4, that is, the tensioning member 53 is inclined in the direction opposite to the moving direction of the chain 4, and since the tensioning member 53 is sleeved on the connecting member 52, the connecting member 52 is also inclined, so that the tensioning member 53 has a tendency to move in the direction opposite to the inclined direction of the chain 4 during the moving process, and after the tensioning member 53 moves in the direction opposite to the inclined direction, an arc track is formed, so that the tensioning effect on the chain 4 can be increased during the moving process.

Preferably, the inner diameter of the first belt wheel 2 is smaller than that of the second belt wheel 3, the distance between the tensioning device 5 and the first belt wheel 2 is L, the distance between the tensioning device 5 and the second belt wheel 3 is L, and the L: L is 1: 1.3-1: 1.5; if the ratio between L and L is too large, i.e. the distance between the tensioning device 5 and the second pulley 3 is too small, the tensioning device 5 will be in a position intermediate the first pulley 2 and the second pulley 3, which is detrimental to the tensioning of the tensioning device 5, and if the ratio between L and L is too small, i.e. the distance between the tensioning device 5 and the second pulley 3 is too large, the tensioning device 5 will be too close to the second pulley 3, which is susceptible to the rotation of the second pulley 3, and which is also detrimental to the tensioning of the tensioning device 5.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A belt wheel synchronous chain automatic tensioning device of a mine screening machine comprises a main body, a screen and a crushing roller, wherein the screen and the crushing roller are arranged in the main body;

the utility model discloses a chain tensioning device, including the main part, the overspeed device tensioner with the chain butt, the overspeed device tensioner orientation with the opposite side slope setting of chain moving direction, the overspeed device tensioner include with the mounting of the outer wall connection of main part, fixed extremely the connecting piece of mounting and be connected to the tensioning piece of connecting piece, the overspeed device tensioner still is located including the cover the elastic component of connecting piece, the tensioning piece with the chain butt, the chain can drive the tensioning piece is followed the connecting piece removes in order to change the deformation volume of elastic component.

2. The automatic pulley timing chain tensioner according to claim 1, wherein the tensioner member includes a tensioner bracket connected to the connecting member and a tensioner pulley connected to the tensioner bracket and abutting against the chain, and the tensioner bracket is integrally formed in the through hole of the connecting member to abut against the elastic member.

3. The automatic tensioner for a pulley timing chain of a mine screening machine of claim 1, wherein the tensioner is disposed below the chain, and the tensioner is capable of moving the portion of the tensioner that abuts the chain upward.

4. The automatic belt wheel synchronous chain tensioning device of the mine screening machine according to claim 1, wherein the inner diameter of the first belt wheel is smaller than that of the second belt wheel, the distance between the tensioning device and the first belt wheel is L, the distance between the tensioning device and the second belt wheel is L, and L: L is 1: 1.3-1: 1.5.