CN213591088U

CN213591088U - Screen tensioning pull rod, screen tensioning device and vibrating screen

Info

Publication number: CN213591088U
Application number: CN202021434620.3U
Authority: CN
Inventors: 李远安; 陈亮; 郭首君; 张艳玲
Original assignee: Hunan Zhonglian Zhongke Concrete Machinery Station Equipment Co ltd; Zoomlion Heavy Industry Science and Technology Co Ltd
Current assignee: Hunan Zhonglian Zhongke Concrete Machinery Station Equipment Co ltd; Zoomlion Heavy Industry Science and Technology Co Ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-07-02
Anticipated expiration: 2030-07-20

Abstract

The utility model relates to a shale shaker part discloses a screen cloth tensioning pull rod, pull rod body (1) and couple (5) including integrated into one piece, pull rod body (1) with connect in the same direction as smooth through changeover portion (6) between couple (5). Furthermore, the utility model discloses still relate to a screen cloth overspeed device tensioner and shale shaker. The utility model discloses simple structure is reliable, and structural strength is high, can reduce the fracture condition and take place, improves the life of screen cloth tensioning pull rod.

Description

Screen tensioning pull rod, screen tensioning device and vibrating screen

Technical Field

The utility model relates to a shale shaker part specifically relates to a screen cloth tensioning pull rod. Furthermore, the utility model discloses still relate to a screen cloth overspeed device tensioner and shale shaker.

Background

At present, dry-method sand making is adopted in the sand making industry at present, and is more economic and environment-friendly compared with the traditional wet-method sand making, a vibration screening machine (vibration screen for short) is needed in the production line of the dry-method sand making, the vibration screening machine has the function of screening and grading crushed stones of the sand making machine, and the screening is mainly realized by screening the stones by screens with different specifications and apertures. The screen cloth is installed on the shale shaker, and the couple is all designed into to the front and back end of screen cloth, and the front end of shale shaker is equipped with the mounting panel that is used for hanging the screen cloth couple, and the rear end of shale shaker relies on the screen cloth pull rod to the screen cloth tensioning under the elasticity effect. The vibrating screen vibrates according to certain natural frequency under vibrating motor's during operation, and the screen cloth is participated in the vibration along with the vibrating screen together, and after the building stones entered into on the screen cloth, the quality of building stones had certain oppression effect to the screen cloth, and then arouses the increase of the tension of screen cloth pull rod. The existing screen mesh pull rod is easy to break under the action of long-time vibration and tensile stress.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that the first aspect will be solved provides a screen cloth tensioning pull rod, and this screen cloth tensioning pull rod simple structure is reliable, and structural strength is high, can reduce the fracture condition and take place, improves the life of screen cloth tensioning pull rod.

The utility model discloses the technical problem that the second aspect will be solved provides a screen cloth overspeed device tensioner, this screen cloth overspeed device tensioner simple structure uses safe and reliable, easy dismounting.

The utility model discloses the technical problem that the third aspect will be solved provides a shale shaker, the long service life of this shale shaker, low in production cost.

In order to solve the technical problem, the utility model discloses the first aspect provides a screen cloth tensioning pull rod, pull rod body and couple including integrated into one piece, the pull rod body with through the changeover portion between the couple in the same direction as smooth connection.

Preferably, the hook is a bent plate-shaped structure, and the transition section is formed by extending the end face of the pull rod body to one end face of the hook along the length direction of the pull rod body.

Preferably, the hook comprises two flat plates arranged in parallel and a semicircular plate connected to one end of the two flat plates.

Preferably, the pull rod body comprises a smooth rod section and a locking rod section, one end of the smooth rod section is connected with the locking rod section, and the other end of the smooth rod section is connected with the transition section.

Preferably, the smooth rod section and the locking rod section are both cylindrical rods, and the locking rod section is a threaded rod.

Preferably, the screen tensioning tension rod is formed by forging.

The utility model discloses the second aspect provides a screen cloth overspeed device tensioner, including the first aspect screen cloth tensioning pull rod, adjusting part and for the fixed connecting plate of screen cloth tensioning pull rod, adjusting part with the connecting plate is all located on the pull rod body of screen cloth tensioning pull rod, adjusting part is suitable for the adjustment screen cloth tensioning pull rod for the connecting plate removes.

Preferably, the adjusting assembly comprises an elastic component and a locking component, the locking component is arranged on the pull rod body of the screen tensioning pull rod, the elastic component is located between the connecting plate and the locking component, and the locking component is suitable for adjusting the screen tensioning pull rod to move relative to the connecting plate under the action of the elastic force of the elastic component.

Preferably, a sleeve is fixed on the connecting plate, and the elastic component is arranged in the sleeve.

Preferably, the pull rod body is sleeved with a pressing ring, and the pressing ring is located between the elastic component and the locking component.

Preferably, the pull rod body is provided with threads, the locking component is a nut, and the locking component is screwed on the pull rod body through the threads.

Preferably, the elastic part is a disc spring sleeved on the pull rod body.

The utility model discloses the third aspect provides a vibrating screen, including screen cloth, screen frame and second aspect screen cloth overspeed device tensioner, the edge of screen cloth is connected with the couple of screen cloth tensioning pull rod, the connecting plate is fixed screen frame is last.

The utility model has the advantages that the pull rod body and the hook are integrally formed and smoothly connected in a transition way, the structure is simple and reliable, the structural strength is high, the stress concentration can be avoided, the occurrence of the fracture condition in the actual use process is greatly reduced, and the service life of the screen tensioning pull rod is prolonged; through at pull rod body tip direct molding couple for single screen cloth tensioning pull rod can the exclusive use, can not have two screen cloth tensioning pull rods atress uneven, the problem of mutual interference, can further improve the life of screen cloth tensioning pull rod.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

FIG. 1 is a schematic view of a prior art screen tensioning device mounted on a shaker;

FIG. 2 is a schematic diagram of a prior art screen tensioning device;

FIG. 3 is a view from the direction A of FIG. 2;

figure 4 is a schematic perspective view of one embodiment of a screen tensioning tension rod of the present invention;

FIG. 5 is a front view of FIG. 4;

FIG. 6 is a top view of FIG. 4;

figure 7 is a schematic structural view of one embodiment of the screen tensioning device of the present invention;

fig. 8 is a top view of fig. 7.

Description of the reference numerals

1' pull rod 2 angle steel

1 smooth rod section of pull rod body 11

12 locking rod section 3 screen frame

4 screen mesh 5 pothook

51 flat 52 semicircular plate

6 transition section 7 connecting plate

8 adjusting assembly 81 sleeve

82 disc spring 83 pressure ring

84 nut

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

Fig. 2 and 3 are schematic structural views of a conventional screen tensioning device, which includes two pull rods 1 ' and two angle steels 2, wherein one end of each of the two pull rods 1 ' is fixed on the angle steel 2, the two pull rods 1 ' are screws, as shown in fig. 1, the conventional screen tensioning device hooks a rear hooking groove of a screen 4 through an angle iron 2, when the tensioning of the screen 4 is adjusted, the nuts on the two pull rods 1' need to be screwed alternately, so that the stress of the screen 4 is uniform, after the screen 4 is tensioned, the stress of the whole screen tensioning device is finally borne by 2 screws, when the vibrating screen works, the 2 screws vibrate along with the screen body under the action of the vibrating motor according to the natural frequency, when the rock falls onto the screen 4, the mass of the rock presses against the screen 4, which adds a great pull to the tensioner, under the action of the tension and the vibration of the vibration motor, the screw rod of the tensioning device is equivalently in an environment with alternating load. And the screw rod of the tensioning device adopts a full-thread screw rod, so that when the screw rod is subjected to a large pulling force, stress concentration is easy to generate, and the screw rod is easy to break under the influence of alternating load.

In addition, what current screen cloth overspeed device tensioner adopted is that a long angle steel adds the connected mode assembly of screw nut together, and in the process of tensioning screen cloth 4, the atress size of 2 screws can't accomplish unanimously, can appear atress big while the atress is little, and the result that this kind of condition leads to is angle steel 2 and the condition that a certain screw rod probably appears out of plumb, just so can make the atress environment of this screw rod more complicated, and the fatigue fracture will appear very fast to the screw rod.

Based on the above-mentioned defect that current screen cloth overspeed device tensioner exists, the utility model discloses the first aspect provides a screen cloth tensioning pull rod, as shown in fig. 4 to fig. 6, including integrated into one piece's pull rod body 1 and couple 5, pull rod body 1 with connect through changeover portion 6 in the same direction as smooth between the couple 5.

The pull rod body 1 and the hook 5 of the utility model are integrally formed and smoothly connected, have simple and reliable structure and high structural strength, can avoid stress concentration, greatly reduce the occurrence of fracture in the actual use process and prolong the service life of the screen tensioning pull rod; through at 1 tip direct molding couple 5 of pull rod body, can replace angle steel 2 among the original overspeed device tensioner, single screen cloth tensioning pull rod can independent utility, can not have two screen cloth tensioning pull rods atress uneven, the problem of mutual interference, can further improve the life of screen cloth tensioning pull rod.

Specifically, the hook 5 is a bent plate-shaped structure, and the transition section 6 is formed by extending an end surface of the pull rod body 1 to one end surface of the hook 5 along the length direction of the pull rod body 1. The hook 5 is of a bent plate-shaped structure, and the hook 5 is formed smoothly, so that stress concentration can be avoided, and the service life of the tension pull rod for tensioning the screen is further prolonged. Of course, the hook 5 may also be of other bending structures as long as it can hook the rear hook groove of the screen 4 well, and it also belongs to the protection scope of the present invention.

More specifically, the hook 5 includes two parallel flat plates 51 and a semicircular plate 52 connected to one end of the two flat plates 51, and the transition section 6 is formed by extending an end surface of the pull rod body 1 to an end surface of one of the flat plates 51 of the hook 5 along a length direction of the pull rod body 1. The hook 5 is easy to machine and form and can be better connected with the screen 4.

Specifically, the pull rod body 1 comprises a smooth rod section 11 and a locking rod section 12, wherein one end of the smooth rod section 11 is connected with the locking rod section 12, and the other end of the smooth rod section is connected with the transition section 6. Through setting up smooth pole section 11, can avoid stress concentration, compare the pull rod structure that adopts full screw thread, its structural strength has had obvious improvement.

Preferably, the smooth rod section 11 and the locking rod section 12 are both cylindrical rods, and the locking rod section 12 is a threaded rod. The whole screen tensioning pull rod is forged and formed by round steel, and threads are machined on the locking rod section 12 after the forming. Through adopting forging molding for the structural strength of screen cloth tensioning pull rod is higher.

The utility model discloses the second aspect provides a screen cloth overspeed device tensioner, including the first aspect screen cloth tensioning pull rod, adjusting part 8 and for the fixed connecting plate 7 of screen cloth tensioning pull rod, adjusting part 8 with connecting plate 7 is all located on the pull rod body 1 of screen cloth tensioning pull rod, adjusting part 8 is suitable for the adjustment screen cloth tensioning pull rod for connecting plate 7 removes.

Through setting up the first aspect screen cloth tensioning pull rod, the utility model discloses screen cloth overspeed device tensioner simple structure uses safe and reliable, long service life, and the installation in the limited spatial layout of shale shaker, dismantle the screen cloth more convenient, nimble.

Specifically, the adjusting assembly 8 includes an elastic member and a locking member, the locking member is disposed on the pull rod body 1 of the screen tensioning pull rod, the elastic member is located between the connecting plate 7 and the locking member, and the locking member is adapted to adjust the screen tensioning pull rod to move relative to the connecting plate 7 under the elastic force of the elastic member. When the screen tensioning device is used, the connecting plate 7 is fixed on the vibrating screen, the screen tensioning pull rod is adjusted through the locking component to move towards the direction close to the screen 4 relative to the connecting plate 7, so that the hook 5 of the screen tensioning pull rod can be hooked on the screen 4, and after the screen 4 is firmly connected with the hook 5 of the screen tensioning pull rod, the screen tensioning pull rod is adjusted through the locking component to move towards the direction far from the screen 4 relative to the connecting plate 7, so that the screen 4 is tensioned.

The pull rod body 1 is provided with threads, the locking component is a nut 84, and the locking component is screwed on the pull rod body 1 through the threads. By screwing the nut 84, the tie rod body 1 is moved relative to the web 7, i.e. the screen tensioning tie rod is moved relative to the web 7. Of course, the locking component may also be other components, for example, the locking component includes a slider and an adjusting screw, the slider is fixed on the pull rod body 1, the adjusting screw is rotatably installed on the connecting plate 7, one end of the adjusting screw is provided with a rotating handle, the other end of the adjusting screw is provided with a limiting plate, the slider is in threaded connection with the adjusting screw, a spring is arranged between the limiting plate and the connecting plate 7, and the slider is driven to move relative to the connecting plate 7 by rotating the adjusting screw, so as to drive the pull rod body 1 to move relative to the.

The elastic component is always in a compressed state and can play a buffering role, so that the screen 4 has certain elasticity after being fixed and tensioned, and the screen 4 is prevented from being damaged due to overlarge tensioning force. Preferably, the elastic component is a disc spring 82 sleeved on the pull rod body 1, and of course, other types of springs or other elastic components may be adopted, for example, a plurality of annular elastic pieces may be arranged along the pull rod body 1 in an overlapping manner.

Preferably, a sleeve 81 is fixed on the connecting plate 7, and the elastic component is arranged in the sleeve 81. Through setting up sleeve 81, can radially spacing to elastomeric element for at work, elastomeric element can not produce too big deformation because of receiving screen frame vibration and grit to the impact of screen cloth 4, thereby avoids pull rod body 1 to produce too big swing and takes place to damage, thereby improves the life of screen cloth tensioning pull rod.

Preferably, the pull rod body 1 is sleeved with a pressing ring 83, and the pressing ring 83 is located between the elastic component and the locking component. By providing the press ring 83, the locking member can be made to better urge the elastic member to compress.

As a specific embodiment, as shown in fig. 7 and 8, the screen tensioning pull rod, the adjusting assembly 8 and the connecting plate 7 fixed relative to the screen tensioning pull rod are included in the first aspect, the pull rod body 1 of the screen tensioning pull rod includes a smooth rod section 11 and a locking rod section 12, the locking rod section 12 is a threaded rod, the adjusting assembly 8 includes an elastic component and a locking component, the elastic component is a disc spring 82 sleeved on the pull rod body 1, the locking component is a nut 84, the nut 84 is screwed on the locking rod section 12, a pressing ring 83 is sleeved on the pull rod body 1, the pressing ring 83 is located between the disc spring 82 and the nut 84, the connecting plate 7 is sleeved on the pull rod body 1, a sleeve 81 is fixed on the connecting plate 7, and the disc spring 82 is arranged in the sleeve 81.

When the screen tensioning device is used, the connecting plate 7 is fixed on the vibrating screen, the screen tensioning pull rod is adjusted through the rotating nut 84 to move towards the direction close to the screen 4 relative to the connecting plate 7 so as to hook the hook 5 of the screen tensioning pull rod on the screen 4, and after the screen 4 is firmly connected with the hook 5 of the screen tensioning pull rod, the screen tensioning pull rod is adjusted through the reversely rotating nut 84 to move towards the direction far from the screen 4 relative to the connecting plate 7 so as to tension the screen 4.

The utility model discloses the third aspect provides a vibrating screen, including screen cloth 4, screen frame 3 and second aspect screen cloth overspeed device tensioner, the edge of screen cloth 4 is connected with couple 5 of screen cloth tensioning pull rod, connecting plate 7 is fixed screen frame 3 is last.

Through setting up the second aspect screen cloth overspeed device tensioner, the utility model discloses the long service life of shale shaker, low in production cost.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the details of the above embodiments, and the technical concept of the present invention can be within the scope of the present invention to perform various simple modifications to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and in order to avoid unnecessary repetition, the present invention does not need to describe any combination of the features.

In addition, various embodiments of the present invention can be combined arbitrarily, and the disclosed content should be regarded as the present invention as long as it does not violate the idea of the present invention.

Claims

1. The utility model provides a screen cloth tensioning pull rod, its characterized in that includes integrated into one piece's pull rod body (1) and couple (5), pull rod body (1) is including locking pole section (12), pull rod body (1) with through changeover portion (6) between couple (5) smooth connection.

2. The screen tensioning pull rod according to claim 1, characterized in that the hook (5) is a curved plate-like structure, and the transition section (6) is formed by extending an end surface of the pull rod body (1) to one end surface of the hook (5) along the length direction of the pull rod body (1).

3. Screen tensioning rod according to claim 2, characterized in that the hook (5) comprises two parallel arranged flat plates (51) and a semicircular plate (52) connected at one end of the two flat plates (51).

4. The screen tensioning stay of claim 1 wherein the stay body (1) further comprises a smooth stay segment (11), the smooth stay segment (11) being connected at one end to the locking stay segment (12) and at the other end to the transition segment (6).

5. Screen tensioning rod according to claim 4, characterized in that the smooth rod section (11) and the locking rod section (12) are both cylindrical rods, the locking rod section (12) being a threaded rod.

6. The screen tensioning tie of any one of claims 1 to 5, wherein the screen tensioning tie is forged.

7. A screen tensioning arrangement, comprising a screen tensioning tension rod as claimed in any one of claims 1 to 6, an adjustment assembly (8) and a web (7) fixed relative to the screen tensioning tension rod, the adjustment assembly (8) and the web (7) each being provided on a rod body (1) of the screen tensioning tension rod, the adjustment assembly (8) being adapted to adjust the movement of the screen tensioning tension rod relative to the web (7).

8. Screen tensioning device according to claim 7, characterized in that the adjustment assembly (8) comprises an elastic member and a locking member, the locking member being provided on the tie body (1) of the screen tensioning tie, the elastic member being located between the web (7) and the locking member, the locking member being adapted to adjust the movement of the screen tensioning tie relative to the web (7) under the action of the elastic force of the elastic member.

9. Screen tensioning device according to claim 8, characterized in that a sleeve (81) is fixed to the web (7), the elastic means being provided in the sleeve (81).

10. Screen tensioning device according to claim 8, characterized in that a clamping ring (83) is sleeved on the pull rod body (1), the clamping ring (83) being located between the elastic means and the locking means.

11. Screen tensioning device according to one of claims 8 to 10, characterized in that the draw-bar body (1) is provided with a thread and the locking means is a nut (84) screwed onto the draw-bar body (1).

12. Screen tensioning device according to one of claims 8 to 10, characterized in that the elastic means are disc springs (82) fitted over the drawbar body (1).

13. A vibrating screen, characterized in that it comprises a screen (4), a screen frame (3) and a screen tensioning device according to any one of claims 7 to 12, the edges of the screen (4) being connected to hooks (5) of a screen tensioning tie-rod, the connecting plate (7) being fixed to the screen frame (3).