CN219880029U

CN219880029U - Adjusting device for roller gap of twin-roller sand making machine

Info

Publication number: CN219880029U
Application number: CN202321074032.7U
Authority: CN
Inventors: 张平林; 张中栋; 张晶玉; 尹秋爱
Original assignee: Liuzhou Ailin Machinery Co ltd
Current assignee: Liuzhou Ailin Machinery Co ltd
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-10-24
Anticipated expiration: 2033-05-06

Abstract

The utility model relates to an adjusting device for roller gaps of a pair-roller sand making machine, which comprises a frame, a main roller, an auxiliary roller, a lever adjusting mechanism and an adjusting motor, wherein the main roller is arranged on the frame through a fixed bearing seat, and the auxiliary roller is arranged on the frame through a sliding bearing seat; the lever adjusting mechanism comprises a front supporting seat, a rear supporting seat, an adjusting screw rod, a screw rod nut and a compression spring, wherein the middle part of the front supporting seat is hinged with a sliding bearing seat, the upper end of the front supporting seat is hinged with the upper end of the rear supporting seat, the compression spring is positioned between the front supporting seat and the rear supporting seat, the screw rod nut is fixedly connected with the rear supporting seat, the adjusting screw rod is matched with the screw rod nut, the adjusting motor is fixed on a frame, and the adjusting screw rod is connected with the adjusting motor through a sprocket chain. The utility model utilizes the lever principle and the buffer capacity of the compression spring, can reduce the use quantity of the compression spring, can avoid the phenomenon that the adjusting screw rod is forcedly retracted and pulled, and ensures that the adjusting screw rod is not impacted by all loads so as to avoid equipment damage.

Description

Adjusting device for roller gap of twin-roller sand making machine

Technical Field

The utility model belongs to the technical field of sand making machines, relates to a pair-roller sand making machine, and particularly relates to an adjusting device for a roller gap of the pair-roller sand making machine.

Background

The double-roller sand making machine is widely used in the equipment for the medium crushing and fine crushing of ore and rock with lower medium hardness in the industrial departments of sand making, ore dressing, cement, metallurgy, chemical industry, building materials and the like, and mainly comprises a main roller, an auxiliary roller, a frame, a compacting and adjusting device, a transmission device, a driving device and the like, wherein the driving device is driven by two motors through a V-belt to drag the two rollers to relatively rotate to roll and crush broken materials. After the material gets into the crushing chamber of machine, the material receives the engaging force effect of rotating the roller, makes the material forced pass through between the two rollers, receives the extrusion of roller simultaneously and cuts the mill, and the material begins cracked promptly, and the tiny particle after the fragmentation throws out to the machine below through the clearance of two rollers along the rotatory tangent line of roller, surpasses the big granule material in clearance, continues to be broken into tiny particle discharge.

The compaction and adjustment device is used for adjusting the gap between the main roller and the auxiliary roller, the auxiliary roller seat of the traditional spring pair roller sand making machine is generally connected with a screw conveyer (screw rod) or a hydraulic top cylinder through a plurality of groups of springs, and the gap between the main roller seat and the auxiliary roller seat is adjusted by driving the auxiliary roller seat to move through the expansion and the contraction of the screw conveyer (screw rod) or the hydraulic top cylinder. The spring pair roller can solve the problem of insufficient pressure due to the fact that a plurality of groups of springs are required to be arranged, and when iron blocks or superhard materials are mixed in materials, all acting forces are loaded on a screw conveyor (screw rod) or a hydraulic jacking cylinder, two parts can be damaged, and sometimes the situations of insufficient jacking and incapability of retracting can occur.

Disclosure of Invention

The utility model aims at solving the problems in the prior art, and provides a roller gap adjusting device for a double-roller sand making machine, which can rapidly and flexibly adjust the gap between a main roller and an auxiliary roller.

The technical scheme adopted by the utility model for achieving the purpose is as follows: the roller gap adjusting device of the double-roller sand making machine comprises a frame, wherein a main roller and an auxiliary roller are respectively arranged on the frame, two ends of the main roller are respectively arranged on the frame through a fixed bearing seat, two ends of the auxiliary roller are respectively arranged on the frame through a sliding bearing seat, and the sliding bearing seat is in sliding connection with the frame through a linear guide rail; the machine frame is also provided with a lever adjusting mechanism and an adjusting motor, wherein the lever adjusting mechanism is used for adjusting the gap between the main roller and the auxiliary roller, the lever adjusting mechanism comprises a front supporting seat, a rear supporting seat, an adjusting screw rod, a screw rod nut and a compression spring, the middle part of the front side of the front supporting seat is hinged with a sliding bearing seat, the upper end of the front supporting seat is hinged with the upper end of the rear supporting seat, the compression spring is positioned between the lower end of the front supporting seat and the lower end of the rear supporting seat, the screw rod nut is fixedly connected with the middle part of the rear side of the rear supporting seat, the adjusting screw rod is matched with the screw rod nut, the adjusting motor is fixedly installed on the machine frame, and the end part of the adjusting screw rod is connected with a rotating shaft of the adjusting motor through a sprocket chain.

The utility model further adopts the technical scheme that: the front supporting seat comprises a front connecting rod and two front side arms respectively connected with two ends of the front connecting rod, the upper ends of the front side arms are vertically arranged, the lower ends of the front side arms are bent towards the rear side, the lower ends of the front side arms are respectively connected with two ends of the front connecting rod, a front hinge hole is formed in the middle of the front side of each front side arm close to the upper end, the front hinge hole is hinged with the sliding bearing seat through a first hinge lug, and a second hinge lug is arranged on the rear side of the upper end of each front side arm; the back supporting seat comprises a back connecting rod, a back connecting plate and two back side arms which are of a 7-shaped structure, the lower ends of the two back side arms are respectively connected with two ends of the back connecting rod, the upper ends of the two back side arms are respectively connected with two sides of the back connecting plate, a back hinge hole is formed in the front side of the upper end of the back side arm, the back hinge hole is hinged with the front side arm through a second hinge lug, a screw nut is fixedly connected with the back side face of the back connecting plate, an adjusting screw is connected with a frame through a screw bearing, and the adjusting screw is matched with the screw nut.

The utility model further adopts the technical scheme that: the rear side of the front connecting rod and the front side of the rear connecting rod are respectively provided with a plurality of positioning pins for positioning the compression springs, and two ends of the compression springs are respectively positioned between the front connecting rod and the rear connecting rod through the positioning pins.

The utility model further adopts the technical scheme that: the number of the compression springs is 4-8.

The roller gap adjusting device of the double-roller sand making machine has the following beneficial effects due to the adoption of the technical scheme:

1. according to the utility model, the rotation of the adjusting motor is controlled by the reversing switch, the rotating shaft of the adjusting motor drives the adjusting screw rod to rotate through the chain wheel and chain assembly 6, and the screw rod nut converts the rotation motion of the adjusting screw rod into linear motion, so that the front supporting seat and the rear supporting seat are used as a whole to drive the sliding bearing seat to slide along the linear guide rail, and the auxiliary roller is close to or far away from the main roller, thereby achieving the purpose of adjusting the gap between the main roller and the auxiliary roller, and the gap adjustment is flexible and rapid and is simple to operate;

2. the front supporting seat of the lever adjusting mechanism is used as a lever arm, the first hinge lug is used as a fulcrum, the lever principle is utilized to play a role of four-two jack-shifting, and the original total acting force is reduced by two thirds of force to act on the compression spring through the lever principle, so that the gap between the main roller and the auxiliary roller can be automatically adjusted well only by one third of spring, and the purpose of keeping and adjusting the thickness of sand products is achieved;

3. due to the lever principle and the buffer capacity of the compression spring, the phenomenon that the adjusting screw rod is forcibly retracted and pulled is avoided, and the adjusting screw rod is not impacted by all loads so as to avoid equipment damage; when the material pressure is not high, returning to the original position, and keeping the equipment to work;

4. the adjusting device for the roller gap of the roller sand making machine provided by the utility model has the advantages that the number of the springs is small, the springs are saved, and the force generated by the lever adjusting mechanism by adopting the lever principle is larger, so that the equipment is more stable, the rear supporting seat is not retracted under the condition of large stress when the equipment is fully loaded, the stability and the durability are superior to those of the prior art, and the granularity of the product is not greatly changed even if the equipment runs for a long time.

The roller gap adjusting device for the roller sand making machine is further described below with reference to the accompanying drawings and the embodiment.

Drawings

FIG. 1 is a schematic diagram of a roller gap adjusting device for a twin-roll sander;

FIG. 2 is a side view of an adjustment device for the roller gap of a twin roll sander according to the present utility model;

FIG. 3 is a schematic view of the lever adjustment mechanism;

FIG. 4 is a schematic view of the structure of the front support;

FIG. 5 is one of the schematic structural views of the rear support base;

FIG. 6 is a second schematic view of the rear support;

reference numerals illustrate: the device comprises a 1-frame, a 2-main roller, a 21-fixed bearing seat, a 3-auxiliary roller, a 31-sliding bearing seat, a 32-linear guide rail, a 33-first hinge lug, a 4-lever adjusting mechanism, a 41-front supporting seat, a 411-front side arm, a 412-front connecting rod, a 413-front hinge hole, a 414-second hinge lug, a 42-rear supporting seat, a 421-rear side arm, a 422-rear connecting plate, a 423-rear connecting rod, a 424-rear hinge hole, a 43-adjusting screw, a 44-screw nut, a 45-compression spring, a 5-adjusting motor, a 6-sprocket chain assembly, a 7-screw bearing and an 8-locating pin.

Detailed Description

As shown in fig. 1 to 6, the roller gap adjusting device of the twin-roll sand making machine comprises a frame 1, wherein a main roller 2, an auxiliary roller 3, a lever adjusting mechanism 4 for adjusting the gap between the main roller 2 and the auxiliary roller 3 and an adjusting motor 5 are respectively arranged on the frame 1, two ends of the main roller 2 are respectively arranged on the frame 1 through fixed bearing seats 21, and a gearbox is driven by the motor to transmit power to the main roller 2, so that the main roller 2 performs circular rotation; the two ends of the auxiliary roller 3 are respectively arranged on the frame 1 through sliding bearing blocks 31, the sliding bearing blocks 31 are in sliding connection with the frame 1 through linear guide rails 32, and the sliding bearing blocks 31 can slide along the linear guide rails 32, so that the auxiliary roller 3 is close to or far away from the main roller 2, and the gap between the main roller 2 and the auxiliary roller 3 is adjusted.

As shown in fig. 3, the lever adjusting mechanism 4 of the present utility model comprises a front supporting seat 41, a rear supporting seat 42, an adjusting screw 43, a screw nut 44 and a compression spring 45, wherein the middle part of the front side of the front supporting seat 41 (i.e. the side close to the sliding bearing seat 31) is hinged with the sliding bearing seat 31, the upper end of the front supporting seat 41 is hinged with the upper end of the rear supporting seat 42, the compression spring 45 is positioned between the lower end of the front supporting seat 41 and the lower end of the rear supporting seat 42, the screw nut 44 is fixedly connected with the middle part of the rear side of the rear supporting seat 42, the adjusting screw 43 is matched with the screw nut 44, the adjusting motor 5 is fixedly installed on the frame 1, and the end part of the adjusting screw 43 is connected with the rotating shaft of the adjusting motor 5 through the sprocket chain assembly 6.

As shown in fig. 4, the front supporting seat 41 includes a front connecting rod 412 and two front arms 411 respectively connected to two ends of the front connecting rod 412, wherein the upper ends of the front arms 411 are vertically arranged, the lower ends of the front arms 411 are bent to the rear side, the lower ends of the front arms 411 are respectively connected to two ends of the front connecting rod 412, a front hinge hole 413 is formed in the middle of the front side of the front arms 411 near the upper end, the front hinge hole 413 is hinged to the sliding bearing seat 31 through a first hinge lug 33, and a second hinge lug 414 is formed at the rear side of the upper end of the front arms 411; as shown in fig. 5 and 6, the rear supporting seat 42 includes a rear connecting rod 423, a rear connecting plate 422, and two rear side arms 421 having a 7-shaped structure, the lower ends of the two rear side arms 421 are respectively connected with two ends of the rear connecting rod 423, the upper ends of the two rear side arms 421 are respectively connected with two sides of the rear connecting plate 422, the front side of the upper end of the rear side arm 421 is provided with a rear hinge hole 424, the rear hinge hole 424 is hinged with the front side arm 411 through a second hinge ear 414, the screw nut 44 is fixedly connected with the rear side surface of the rear connecting plate 422, the adjusting screw 43 is connected with the frame 1 through a screw bearing 7, and the adjusting screw 43 is matched with the screw nut 44; the rear side of the front connecting rod 412 and the front side of the rear connecting rod 423 are respectively provided with a plurality of positioning pins 8 for positioning the compression springs 45, two ends of the compression springs 45 are respectively positioned between the front connecting rod 412 and the rear connecting rod 423 through the positioning pins 8, the number of the compression springs 45 is 4-8, and in the embodiment, the compression springs 45 are provided with 6 compression springs.

The utility model relates to a working principle of a roller gap adjusting device of a pair roller sand making machine, which comprises the following steps:

1. the motor drives the gearbox to transmit power to the main roller 2, so that the main roller 2 performs circular rotation, when the hopper is used for discharging, the main roller 2 rotates clockwise, materials are crushed through the extrusion of a gap between the main roller 2 and the auxiliary roller 3, and the thickness of a processed product can be adjusted by adjusting the size of the gap between the main roller 2 and the auxiliary roller 3;

2. when the gap between the main roller 2 and the auxiliary roller 3 needs to be adjusted, the adjusting motor 5 is controlled to rotate through a reversing switch, the rotating shaft of the adjusting motor 5 drives the adjusting screw 43 to rotate through the chain wheel and chain assembly 6, the screw nut 44 converts the rotating motion of the adjusting screw 43 into linear motion, so that the front supporting seat 41 and the rear supporting seat 42 are taken as a whole to drive the sliding bearing seat 31 to slide along the linear guide rail 32, the auxiliary roller 3 is close to or far away from the main roller 2, and the purpose of adjusting the gap between the main roller 2 and the auxiliary roller 3 is achieved;

3. the material is extruded with uneven size, softness and distribution density, the material pushes and presses the auxiliary roller 3, the thrust of the material acts on the lever adjusting mechanism 4 through the sliding bearing seat 31, the front supporting seat 41 of the lever adjusting mechanism 4 is used as a lever arm, the first hinge lug 33 is used as a fulcrum, and the whole original acting force is reduced by two thirds of force by the lever principle to act on the compression spring 45 by utilizing the lever principle, so that the gap between the main roller 2 and the auxiliary roller 3 can be well and automatically adjusted by only one third of spring, and the purpose of adjusting the thickness of sand products is achieved; in addition, due to the lever principle and the buffer capacity of the compression spring 45, the phenomenon that the adjusting screw 43 is forcibly retracted and pulled is avoided, so that equipment is prevented from being damaged.

The above embodiments are merely preferred embodiments of the present utility model, the structure of the present utility model is not limited to the forms of the above embodiments, and any modifications, equivalents, etc. within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides an adjusting device in roller clearance of roller sand making machine, includes frame (1), install main roller (2) and vice running roller (3) on frame (1) respectively, main roller (2) both ends are installed on frame (1) through fixed bearing seat (21) respectively, and vice running roller (3) both ends are installed on frame (1) through sliding bearing seat (31) respectively, and sliding bearing seat (31) are through linear guide (32) and frame (1) sliding connection; the method is characterized in that: the novel automatic roller adjusting device is characterized in that a lever adjusting mechanism (4) and an adjusting motor (5) are further arranged on the frame (1) and used for adjusting a gap between the main roller (2) and the auxiliary roller (3), the lever adjusting mechanism (4) comprises a front supporting seat (41), a rear supporting seat (42), an adjusting screw (43), a screw nut (44) and a compression spring (45), the middle part of the front side of the front supporting seat (41) is hinged with a sliding bearing seat (31), the upper end of the front supporting seat (41) is hinged with the upper end of the rear supporting seat (42), the compression spring (45) is positioned between the lower end of the front supporting seat (41) and the lower end of the rear supporting seat (42), the screw nut (44) is fixedly connected with the middle part of the rear supporting seat (42), the adjusting screw (43) is matched with the screw nut (44), the adjusting motor (5) is fixedly arranged on the frame (1), and the end part of the adjusting screw (43) is connected with the rotating shaft of the adjusting motor (5) through a chain wheel assembly (6).

2. The device for adjusting the roller gap of a twin-roll sander as set forth in claim 1, wherein: the front supporting seat (41) comprises a front connecting rod (412) and two front side arms (411) which are respectively connected with two ends of the front connecting rod (412), the upper ends of the front side arms (411) are vertically arranged, the lower ends of the front side arms (411) are bent towards the rear side, the lower ends of the front side arms (411) are respectively connected with two ends of the front connecting rod (412), front hinge holes (413) are formed in the middle of the front side arms (411) close to the upper ends, the front hinge holes (413) are hinged with the sliding bearing seat (31) through first hinge lugs (33), and second hinge lugs (414) are formed in the rear side of the upper ends of the front side arms (411); the back supporting seat (42) comprises a back connecting rod (423), a back connecting plate (422) and two back side arms (421) which are of a 7-shaped structure, the lower ends of the two back side arms (421) are respectively connected with the two ends of the back connecting rod (423), the upper ends of the two back side arms (421) are respectively connected with the two sides of the back connecting plate (422), the front side of the upper end of the back side arm (421) is provided with a back hinge hole (424), the back hinge hole (424) is hinged with the front side arm (411) through a second hinge lug (414), the screw nut (44) is fixedly connected with the back side face of the back connecting plate (422), the adjusting screw (43) is connected with the frame (1) through a screw bearing (7), and the adjusting screw (43) is matched with the screw nut (44).

3. The device for adjusting the roller gap of a pair of roller sand making machine according to claim 2, wherein: the rear side of the front connecting rod (412) and the front side of the rear connecting rod (423) are respectively provided with a plurality of positioning pins (8) for positioning the compression springs (45), and two ends of the compression springs (45) are respectively positioned between the front connecting rod (412) and the rear connecting rod (423) through the positioning pins (8).

4. The device for adjusting the roller gap of a twin-roll sander as set forth in claim 1, wherein: the number of the compression springs (45) is 4-8.