CN218531753U

CN218531753U - Adjusting device for eccentric block of vibrating screen

Info

Publication number: CN218531753U
Application number: CN202222862296.0U
Authority: CN
Inventors: 刘雨; 王章禄
Original assignee: Hubei Yuanzhong Piston Co ltd
Current assignee: Hubei Yuanzhong Piston Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-02-28
Anticipated expiration: 2032-10-28

Abstract

The utility model discloses an adjusting device of shale shaker eccentric block, including the pivot, pivot one end is fixed with the belt pulley, and the pivot is close to the outside at middle part and installs first eccentric block, and first eccentric block one side is provided with the second eccentric block, and wherein, first eccentric block is close to second eccentric block one side and has seted up the thread groove. The utility model discloses, when needing to adjust the vibration dynamics of shale shaker, remove the locking to the dwang, later drive adjusting screw through the knob and rotate, adjusting screw drives it and second eccentric block through the threaded connection with first eccentric block and is close to or keeps away from each other, through adjusting the interval between second eccentric block and the first eccentric block, can adjust the eccentric block focus to the interval between the pivot, effectively prevent the winding problem of wire simultaneously.

Description

Adjusting device for eccentric block of vibrating screen

Technical Field

The utility model relates to a shale shaker eccentric block technical field specifically is an adjusting device of shale shaker eccentric block.

Background

The vibrating screen works by utilizing reciprocating rotary type vibration generated by vibrator excitation, the upper rotary heavy hammer of the vibrator enables the screen surface to generate plane rotary vibration, the lower rotary heavy hammer enables the screen surface to generate conical surface rotary vibration, the effect of the combined action enables the screen surface to generate re-rotary type vibration, the vibrator is an eccentric block, the vibrator is used for generating vibration force by driving the eccentric block to rotate, and when the eccentric block is used, the eccentric block needs to be adjusted by an adjusting device.

The main adjusting methods of the prior adjusting device for the eccentric block of the vibrating screen are two, wherein one method is to change the size of the exciting force of the eccentric block by adding or reducing the number of the eccentric block; another method is to change the exciting force of the vibrating screen by changing the included angle of the eccentric block of the vibrating screen, for example, the patent numbers are: CN 201721737657.1-vibrating screen exciting force adjusting device.

There are also some devices that adjust the exciting force by adjusting the distance between the eccentric block and the rotating shaft, such as the following patent numbers: CN201822084281.X is a vibration exciter exciting force adjusting mechanism. The adjusting mechanism utilizes the motor to drive the eccentric block to move so as to adjust the distance of the eccentric block relative to the fixed shaft, however, because the fixed shaft rotates, the motor in the adjusting mechanism is arranged on the fixed shaft, and the problem that a lead corresponding to the motor is wound easily in the actual working process; and after the distance of the eccentric block relative to the fixed shaft is adjusted, the screw rod is locked by directly utilizing the torque of the motor, so that the motor is easily damaged. Therefore, a novel adjusting device for the eccentric block of the vibrating screen is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adjusting device of shale shaker eccentric block has reached through the interval of adjusting between second eccentric block and the first eccentric block, can adjust the eccentric block focus to the interval between the pivot, need not the motor to adjust simultaneously, effectively prevents the winding problem of wire.

In order to achieve the above object, the utility model provides a following technical scheme: an adjusting device of eccentric blocks of a vibrating screen comprises a rotating shaft, wherein a belt pulley is fixed at one end of the rotating shaft, a first eccentric block is arranged at the outer side of the rotating shaft close to the middle part, a second eccentric block is arranged at one side of the first eccentric block, wherein,

a thread groove is formed in one side, close to the second eccentric block, of the first eccentric block, a rotating groove penetrates through one side, corresponding to the thread groove, of the second eccentric block, a rotating rod is rotatably connected to the inside of the rotating groove through a bearing 19, and an adjusting screw rod is fixed at the end, close to the thread groove, of the rotating rod;

the guide bar groove has been seted up to the both sides that the second eccentric block is close to first eccentric block, first eccentric block is close to guide bar groove one side and is fixed with the guide arm, the end fixing that the dwang is close to the second eccentric block outside has the knob, the second eccentric block locks the dwang through locking mechanism, avoids the dwang to receive vibrations to produce rotatoryly.

Preferably, the first eccentric block and the second eccentric block form a complete eccentric wheel, the first eccentric block is a cylinder, one side of the second eccentric block, which is close to the first eccentric block, is an arc concave surface, and the inner diameter of the arc concave surface of the second eccentric block is matched with the outer diameter of the first eccentric block.

Preferably, the guide rod is a cylinder, and the guide rod is movably inserted in the guide rod groove to form a guide structure.

Preferably, locking mechanism includes the gear, the dwang is located and rotates the outer wall in inslot and be fixed with the gear, the locating lever groove has been seted up to one side that rotates the groove and correspond the gear, the outside that the second eccentric block is close to the locating lever groove is run through and is had the pull rod groove, the inside of pull rod groove is run through and is had the pull rod, the end fixing that the pull rod is close to the locating lever inslot side has the locating lever, the cover has the spring on the pull rod of locating lever to between the pull rod groove, one side that the locating lever is close to the gear is fixed with the lock tooth.

Preferably, the positioning rod is rectangular column-shaped, and the external dimension of the positioning rod is matched with the internal dimension of the positioning rod groove.

Preferably, the number of the locking teeth is more than two, the pitch of the locking teeth is equal to that of the gear, and the locking teeth are meshed with the gear.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses, at the shale shaker during operation, the motor passes through the belt pulley and drives the pivot rotation, the pivot drives first eccentric block and second eccentric block and rotates, first eccentric block and second eccentric block component complete eccentric block, when the eccentric block rotates, produce the eccentric force, it vibrates to drive the shale shaker production, when needing the vibration dynamics of adjusting the shale shaker, remove the locking to the dwang, later drive adjusting screw through the knob and rotate, adjusting screw drives it and second eccentric block through the threaded connection with first eccentric block and is close to or keeps away from each other, through adjusting the interval between second eccentric block and the first eccentric block, can adjust the interval between eccentric block focus to the pivot, along with the increase of eccentric block focus to pivot interval, the eccentric force of production crescent, make the vibration power of shale shaker increase, adjustable eccentric block through first eccentric block and second eccentric block constitution, can be required according to production, adjust the vibration dynamics of shale shaker, need not the motor to adjust simultaneously, effectively prevent the winding problem of wire.

2. The utility model discloses, when adjusting screw needs to be rotated, the pulling pull rod, the pull rod drives the locating lever and overcomes spring force and removes to keeping away from the gear direction, make the dwang can rotate, drive adjusting screw through knob and dwang and rotate, adjust the focus of eccentric block, the back is accomplished in the eccentric block adjustment, loosen the pull rod, the spring promotes the locating lever and supports the gear, the locating lever drives the lock tooth and meshes with the gear mutually, lock the dwang through lock tooth and gear, avoid adjusting screw to take place the rotation when receiving vibrations, the focus that leads to the eccentric block produces the removal.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a side view of the cross-sectional structure of the present invention;

FIG. 3 is a schematic view of the front cross-sectional structure of the present invention;

fig. 4 is a schematic view of a part of an enlarged structure at a in fig. 3 according to the present invention.

In the figure: 1. a rotating shaft; 2. a pulley; 3. a first eccentric mass; 4. a second eccentric mass; 5. a thread groove; 6. a rotating groove; 7. rotating the rod; 8. adjusting the screw rod; 9. a guide rod groove; 10. a guide bar; 11. a knob; 12. a gear; 13. a positioning rod slot; 14. a pull rod groove; 15. a pull rod; 16. positioning a rod; 17. a spring; 18. locking teeth; 19. and (5) a bearing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, 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 work belong to the protection scope of the present invention.

Example (b):

referring to fig. 1 to 4, the present invention provides a technical solution: an adjusting device of eccentric blocks of a vibrating screen comprises a rotating shaft 1, a belt pulley 2 is fixed at one end of the rotating shaft 1, a first eccentric block 3 is arranged at the outer side of the rotating shaft 1 close to the middle part, a second eccentric block 4 is arranged at one side of the first eccentric block 3, wherein,

a thread groove 5 is formed in one side, close to the second eccentric block 4, of the first eccentric block 3, a rotating groove 6 penetrates through one side, corresponding to the thread groove 5, of the second eccentric block 4, a rotating rod 7 is rotatably connected to the inside of the rotating groove 6 through a bearing 19, and an adjusting screw 8 is fixed to the end, close to the thread groove 5, of the rotating rod 7;

two sides of the second eccentric block 4 close to the first eccentric block 3 are provided with guide rod grooves 9, one side of the first eccentric block 3 close to the guide rod grooves 9 is fixedly provided with a guide rod 10, the end part of the rotating rod 7 close to the outer side of the second eccentric block 4 is fixedly provided with a knob 11, and the second eccentric block 4 locks the rotating rod 7 through a locking mechanism to prevent the rotating rod 7 from rotating due to vibration;

when the vibrating screen works, the motor drives the rotating shaft 1 to rotate through the belt pulley 2, the rotating shaft 1 drives the first eccentric block 3 and the second eccentric block 4 to rotate, the first eccentric block 3 and the second eccentric block 4 form a complete eccentric block, when the eccentric blocks rotate, eccentric force is generated, the vibrating screen is driven to vibrate, when the vibration strength of the vibrating screen needs to be adjusted, locking of the rotating rod 7 is released, then the adjusting screw 8 is driven to rotate through the knob 11, the adjusting screw 8 drives the first eccentric block 3 and the second eccentric block 4 to be close to or far away from each other through threaded connection, through adjusting the distance between the second eccentric block 4 and the first eccentric block 3, the distance between the gravity center of the eccentric block and the rotating shaft 1 can be adjusted, along with the increase of the distance between the gravity center of the eccentric block and the rotating shaft 1, the generated eccentric force is gradually increased, so that the vibration force of the vibrating screen is increased, and through the adjustable eccentric block formed by the first eccentric block 3 and the second eccentric block 4, the vibrating screen can be adjusted according to the requirements of production.

Referring to fig. 1 to 4, the first eccentric block 3 and the second eccentric block 4 form a complete eccentric wheel, the first eccentric block 3 is a cylinder, one side of the second eccentric block 4 close to the first eccentric block 3 is an arc-shaped concave surface, the inner diameter of the arc-shaped concave surface of the second eccentric block 4 is matched with the outer diameter of the first eccentric block 3, the guide rod 10 is a cylinder, and the guide rod 10 is movably inserted into the guide rod groove 9 to form a guide structure, when the adjusting screw 8 is rotated, the guide rod 10 and the guide rod groove 9 prevent the second eccentric block 4 and the first eccentric block 3 from rotating relatively, so that the second eccentric block 4 can move vertically, and the second eccentric block 4 is prevented from moving and deviating.

Referring to fig. 1 to 4, the locking mechanism includes a gear 12, a gear 12 is fixed on an outer wall of the rotating rod 7 located in the rotating groove 6, a positioning rod groove 13 is formed on one side of the rotating groove 6 corresponding to the gear 12, a pull rod groove 14 penetrates through an outer side of the second eccentric block 4 close to the positioning rod groove 13, a pull rod 15 penetrates through an inner portion of the pull rod groove 14, a positioning rod 16 is fixed on an end portion of the pull rod 15 close to an inner side of the positioning rod groove 13, a spring 17 is sleeved on the pull rod 15 between the positioning rod 16 and the pull rod groove 14, a locking tooth 18 is fixed on one side of the positioning rod 16 close to the gear 12, the positioning rod 16 is rectangular column-shaped, an outer dimension of the positioning rod 16 is matched with an inner dimension of the positioning rod groove 13, the locking teeth 18 are more than two, a pitch of the locking tooth 18 is equal to a pitch of the gear 12, the locking tooth 18 is engaged with the gear 12, when the adjusting screw 8 needs to rotate, the rotating rod 15 is pulled, the rotating rod drives the positioning rod 16 to move in a direction away from the gear 12 against the spring 17 to overcome an elastic force of the spring 17, so that the rotating rod 7 can rotate, the adjusting screw 8, thereby preventing the eccentric block from being pushed to be disengaged from the eccentric block 12, and the eccentric block 12, thereby preventing the eccentric block from being disengaged from the eccentric block 12, and the eccentric block 16.

The working principle is as follows: the adjusting device of the eccentric block of the vibrating screen is characterized in that when the vibrating screen works, a motor drives a rotating shaft 1 to rotate through a belt pulley 2, the rotating shaft 1 drives a first eccentric block 3 and a second eccentric block 4 to rotate, the first eccentric block 3 and the second eccentric block 4 form a complete eccentric block, when the eccentric blocks rotate, eccentric force is generated to drive the vibrating screen to vibrate, when the vibration strength of the vibrating screen needs to be adjusted, locking of a rotating rod 7 is released, then a knob 11 drives an adjusting screw rod 8 to rotate, the adjusting screw rod 8 drives the adjusting screw rod to be close to or far away from the second eccentric block 4 through threaded connection with the first eccentric block 3, by adjusting the distance between the second eccentric block 4 and the first eccentric block 3, the distance between the gravity center of the eccentric block and the rotating shaft 1 can be adjusted, and along with the increase of the distance between the gravity center of the eccentric block and the rotating shaft 1, the eccentric power of production is crescent, make the vibrational force of shale shaker increase, adjustable eccentric block through first eccentric block 3 and second eccentric block 4 constitution, can be required according to production, adjust the vibration dynamics of shale shaker, and when needing to rotate adjusting screw 8, pulling pull rod 15, pull rod 15 drives locating lever 16 and overcomes spring 17 elasticity and removes to keeping away from gear 12 direction, make dwang 7 can rotate, drive adjusting screw 8 through knob 11 and dwang 7 and rotate, adjust the focus of eccentric block, eccentric block adjustment is accomplished the back, loosen pull rod 15, spring 17 promotes locating lever 16 and supports gear 12, locating lever 16 drives locking tooth 18 and gear 12 and meshes mutually, through locking tooth 18 and gear 12 to dwang 7 locking, avoid adjusting screw 8 to take place the rotation when receiving vibrations, lead to the focus of eccentric block to produce the removal.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an adjusting device of shale shaker eccentric block, includes pivot (1), its characterized in that: a belt pulley (2) is fixed at one end of the rotating shaft (1), a first eccentric block (3) is arranged at the outer side of the rotating shaft (1) close to the middle part, a second eccentric block (4) is arranged at one side of the first eccentric block (3), wherein,

a thread groove (5) is formed in one side, close to the second eccentric block (4), of the first eccentric block (3), a rotating groove (6) penetrates through one side, corresponding to the thread groove (5), of the second eccentric block (4), a rotating rod (7) is rotatably connected to the inside of the rotating groove (6) through a bearing (19), and an adjusting screw rod (8) is fixed at the end, close to the thread groove (5), of the rotating rod (7);

second eccentric block (4) are close to the both sides of first eccentric block (3) and have seted up guide bar groove (9), first eccentric block (3) are close to guide bar groove (9) one side and are fixed with guide arm (10), the end fixing that dwang (7) are close to the second eccentric block (4) outside has knob (11), second eccentric block (4) are locked dwang (7) through locking mechanism, avoid dwang (7) to receive vibrations and produce rotatoryly.

2. The adjusting device of eccentric block of vibrating screen as claimed in claim 1, wherein: the eccentric wheel is characterized in that the first eccentric block (3) and the second eccentric block (4) form a complete eccentric wheel, the first eccentric block (3) is a cylinder, one side, close to the first eccentric block (3), of the second eccentric block (4) is an arc-shaped concave surface, and the inner diameter of the arc-shaped concave surface of the second eccentric block (4) is matched with the outer diameter of the first eccentric block (3).

3. The adjusting device of eccentric block of vibrating screen as claimed in claim 1, wherein: the guide rod (10) is a cylinder, and the guide rod (10) is movably inserted in the guide rod groove (9) to form a guide structure.

4. The adjusting device of the eccentric block of the vibrating screen as claimed in claim 1, wherein: locking mechanism includes gear (12), the outer wall that dwang (7) are located rotation groove (6) is fixed with gear (12), rotation groove (6) correspond one side of gear (12) and seted up locating lever groove (13), the outside that second eccentric block (4) are close to locating lever groove (13) is run through and is had pull rod groove (14), the inside of pull rod groove (14) is run through and is had pull rod (15), pull rod (15) are close to the inboard tip of locating lever groove (13) and are fixed with locating lever (16), the cover has spring (17) on pull rod (15) between locating lever (16) to pull rod groove (14), one side that locating lever (16) are close to gear (12) is fixed with lock tooth (18).

5. An adjustment device for the eccentric mass of a vibrating screen as claimed in claim 4, wherein: the positioning rod (16) is rectangular column-shaped, and the external size of the positioning rod (16) is matched with the internal size of the positioning rod groove (13).

6. An adjustment device for the eccentric mass of a vibrating screen as claimed in claim 4, wherein: the number of the locking teeth (18) is more than two, the tooth pitch of the locking teeth (18) is equal to that of the gear (12), and the locking teeth (18) are meshed with the gear (12).