CN114558679B

CN114558679B - Crushing device

Info

Publication number: CN114558679B
Application number: CN202210278745.9A
Authority: CN
Inventors: 王旭; 张志业; 雷迪迪; 孙春庆; 杨学文; 李少文
Original assignee: China Railway Construction Heavy Industry Group Co Ltd
Current assignee: China Railway Construction Heavy Industry Group Co Ltd
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2023-06-23
Anticipated expiration: 2042-03-17
Also published as: CN114558679A

Abstract

The invention discloses a crushing device, which comprises a frame, a driving assembly and a plurality of groups of crushing assemblies, wherein the driving assembly is arranged on the frame; the multiple groups of crushing assemblies are arranged on the frame along the material movement direction; the crushing assembly comprises a movable jaw assembly, a movable roller assembly and a tensioning assembly; the crushing cavities for crushing the materials are formed between the movable roller assembly and the movable jaw assembly, and the materials can be crushed in multiple stages through the crushing cavities formed by the crushing assemblies, so that the crushing efficiency is high.

Description

Crushing device

Technical Field

The invention relates to the technical field of crushing, in particular to a crushing device.

Background

The jaw crusher has the advantages of simple structure, convenient use and maintenance, safe and reliable work and wide application in the sand and stone mine industry; because the crushing ratio of the jaw crusher is 3-5, equipment such as impact crushing and the like is needed to be added behind the jaw crusher to crush stones in the production line, so that required sand can be produced, a belt pulley and a space are needed to be added to arrange the production line, and the jaw crusher at the present stage only has one-stage crushing and can not screen materials, so that the problems of low crushing ratio, lower working efficiency and the like exist.

The main reason for the above problems is that: 1. most jaw crushers only crush at one stage, and the crushing ratio is small; 2. the jaw crusher cannot screen materials, lacks a material classification function and has a crushing phenomenon; 3. the material falls down by utilizing the action of gravity, and the material moves slowly in the crushing cavity, and the crushing capacity is influenced by the lower crushing speed.

In summary, a crushing device is urgently needed to solve the problems of lack of multistage crushing, lack of screening and shaping functions and low crushing efficiency in the prior art.

Disclosure of Invention

The invention aims to provide a crushing device, which solves the problems of the prior art that multistage crushing is lacked, the screening and shaping functions are not available and the crushing efficiency is low, and the specific technical scheme is as follows:

the crushing device is characterized by comprising a frame, a driving assembly and a plurality of groups of crushing assemblies;

the multiple groups of crushing assemblies are arranged on the frame along the material movement direction; the crushing assembly comprises a movable jaw assembly, a movable roller assembly and a tensioning assembly; the movable jaw assembly and the movable roller assembly are arranged on the frame, and a crushing cavity is formed between the movable jaw assembly and the movable roller assembly; the two ends of the tensioning assembly are respectively connected with the frame and the movable jaw assembly; the crushing cavities formed by the crushing assemblies are communicated; the driving assembly comprises a movable jaw driving assembly and a movable roller driving assembly; the movable jaw driving assembly is connected with the movable jaw assembly and used for driving the movable jaw assembly to make eccentric movement; the movable roller driving assembly is connected with the movable roller assembly and used for driving the movable roller assembly to rotate.

The technical scheme is that the movable jaw assembly comprises an eccentric shaft, a movable jaw and a jaw plate; the eccentric shaft is arranged on the frame and is connected with the movable jaw driving assembly; the movable jaw is eccentrically matched with the eccentric shaft; the jaw plate is arranged on the movable jaw, and a crushing cavity is formed between the jaw plate and the movable roller assembly.

The technical scheme is that the tensioning assembly comprises a supporting seat, a pull rod, a nut and an elastic piece; the supporting seat is arranged on the frame; one end of the pull rod is connected with a nut, and the other end of the pull rod is hinged with the movable jaw; the elastic piece is arranged between the supporting seat and the nut, and the expansion direction of the elastic piece is consistent with the axial direction of the pull rod.

In the technical scheme, preferably, the outlet widths L of the multiple groups of crushing cavities are sequentially reduced along the movement direction of the materials; the included angle between the jaw plate and the moving direction of the material is omega, and omega formed by a plurality of groups of movable jaw components is sequentially reduced along the moving direction of the material.

Preferably, the crushing assembly further comprises an adjusting component for adjusting the width L of the outlet of the crushing cavity; the adjusting component comprises a toggle pad, a toggle plate and two groups of adjusting components; the adjusting piece comprises an adjusting screw rod, a connecting seat and a wedge block; the connecting seat is arranged on the frame; the adjusting screw is in threaded connection with the connecting seat, one end of the adjusting screw is hinged with the wedge blocks, and the wedge blocks of the two groups of adjusting pieces are in wedge fit; the toggle pad is arranged between the toggle plate and a group of wedge blocks, the toggle pad and the movable jaw are both provided with toggle plate movable grooves, two ends of the toggle plate are respectively arranged in the toggle plate movable grooves, and the toggle plate and the movable jaw are driven to move through the wedge blocks so as to adjust the outlet width L.

Preferably, the movable jaw driving assembly comprises a first power piece, a first chain and a first gear transmission mechanism; the output end of the first power piece is connected with the eccentric shafts of a group of movable jaw assemblies through a first gear transmission mechanism; the eccentric shafts of the multiple groups of movable jaw assemblies are matched with each other through a first chain and a gear to transmit power;

the technical scheme is that the movable roller driving assembly comprises a second power piece, a second chain and a second gear transmission mechanism; the second power piece is connected with a group of movable roller assemblies through a second gear transmission mechanism; the dynamic roller assemblies of the multiple groups of crushing assemblies are in power transmission through the cooperation of the second chain and the gear; the second gear transmission mechanism comprises an incomplete gear arranged on the output end of the second power piece and a matched gear arranged on the movable roller assembly.

Preferably, the movable roller assembly comprises a plurality of roller single pieces arranged on the frame along the material moving direction; the roller single piece comprises a movable roller and a movable roller shaft, and the movable roller shaft are coaxially arranged; the movable roll shaft is connected with a matched gear of the second gear transmission mechanism.

In the above technical solution, preferably, the shape of the movable roller is a regular prism.

According to the technical scheme, preferably, when the jaw plate moves to the highest position far away from the material, at least one side surface of the movable roller is arranged in parallel relative to the jaw plate at the highest position.

According to the technical scheme, preferably, the side surface of the movable roller is detachably provided with the lining plate; the shape and specification of the lining plate are matched with the side surface of the movable roller; and a plurality of groups of bulges are arranged on the lining plate.

The technical scheme of the invention has the following beneficial effects:

(1) The crushing device comprises a frame, a driving assembly and a plurality of groups of crushing assemblies; the multiple groups of crushing assemblies are arranged on the frame along the material movement direction; the crushing assembly comprises a movable jaw assembly, a movable roller assembly and a tensioning assembly; the crushing cavities for crushing the materials are formed between the movable roller assembly and the movable jaw assembly, and the materials can be crushed in multiple stages through the crushing cavities formed by the crushing assemblies, so that the crushing efficiency is high.

(2) The eccentric shaft is in eccentric fit with the movable jaw, and the movable jaw can be driven by the movable jaw driving assembly to eccentrically move around the eccentric shaft, so that the jaw plate arranged on the movable jaw moves along with the movable jaw, and the materials in the crushing cavity are crushed.

(3) The tensioning assembly can provide elastic tension for the movable jaw and ensure orderly extrusion.

(4) According to the invention, the outlet widths L of the multiple groups of crushing cavities and the horizontal included angle omega of the jaw plates are sequentially reduced, so that the function of classifying crushing can be realized, and the crushing efficiency is improved.

(5) According to the invention, the size of the outlet width L of the crushing cavity is regulated by the regulating component, namely, when the outlet width L of the crushing cavity needs to be reduced, the screw threads of the regulating screw are screwed in, and the two wedge blocks slide relatively, so that one group of wedge blocks drive the toggle plate to downwards squeeze the movable jaw, the outlet width L of the crushing cavity is reduced, and when the outlet width L of the crushing cavity needs to be increased, the screw threads of the regulating screw are retracted, and the movable jaw is upwards brought up by the tensioning assembly, so that the outlet width L of the crushing cavity is increased.

(6) The movable jaw driving assembly is provided with a group of first power pieces, and then performs power transmission through the first chains and the gears, so that extrusion power can be provided for a plurality of groups of crushing assemblies; the movable roller driving assembly can provide power for a roller single piece of a plurality of groups of crushing assemblies, and can ensure intermittent movement of materials and crushing effect by arranging the incomplete gears.

(7) The movable roller assembly comprises a plurality of roller single pieces which are arranged on a rack along the movement direction of materials, and after the materials are crushed, the materials with the particle size smaller than the gap between the two groups of roller single pieces fall downwards, so that the uniformity of material crushing is ensured; in addition, the invention can select the installation distance between the roller single pieces according to the actual situation, thereby sieving out the materials with the required specification.

(8) The movable roller adopts a regular prism shape, so that the crushing effect can be effectively improved; when the jaw plate moves upwards to the highest position, at least one side surface of the movable roller is parallel to the jaw plate, so that the jaw plate moves downwards, and when materials are extruded, the materials cannot be located between the jaw plate and the side edges of the movable roller, the movable roller can be effectively protected, and meanwhile, the pressure required for extruding the materials is reduced.

(9) The lining plates are detachably arranged on the side surfaces of the movable rollers, so that the lining plates can be quickly replaced according to the abrasion condition of the lining plates, and the distance between two groups of roller single pieces can be reduced or increased by uniformly replacing the lining plates with different thicknesses, so that the working conditions when materials with small particle size or large particle size are needed can be matched; the material can be polished and shaped by a plurality of groups of bulges on the lining plate.

In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.

In the drawings:

FIG. 1 is a schematic view of the crushing apparatus of the present embodiment;

FIG. 2 is a schematic view of the structure of the frame of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is a schematic view of the movable jaw assembly of FIG. 1;

FIG. 5 is a schematic view of a single roll piece of the movable roll assembly of FIG. 1;

FIG. 6 is a schematic view of the backing plate on the roll singlets of FIG. 5;

FIG. 7 is a schematic view of the construction of the tension assembly of FIG. 1;

FIG. 8 is a schematic view of the adjustment assembly of FIG. 1;

FIG. 9 is a schematic view of the construction of the movable roller drive assembly of FIG. 1 (second chain not shown);

wherein, 1, the frame; 1.1, a mounting rack; 2. a drive assembly; 2.1, a movable jaw driving assembly; 2.11, a first power piece; 2.12, a first chain; 2.2, a movable roller driving assembly; 2.21, a second power piece; 2.22, a second chain; 2.23, a second gear transmission mechanism; 2.231, incomplete gear; 2.232, mating gears; 3. crushing the assembly; a, a crushing cavity; 3.1, a movable jaw assembly; 3.11, eccentric shaft; 3.12, movable jaw; 3.13, jaw plate; 3.2, a movable roller assembly; 3.21, a movable roller; 3.22, a movable roller shaft; 3.23, lining board; 3.23a, protrusions; 3.3, tensioning the assembly; 3.31, a supporting seat; 3.32, a pull rod; 3.33, nuts; 3.34, an elastic member; 3.35, gaskets; 3.36, pin roll; 3.4, adjusting the assembly; 3.41, toggle plate; 3.42, elbow pad; 3.43, adjusting member; 3.431, adjusting screw; 3.432, a connecting seat; 3.433, wedge.

Detailed Description

Embodiments of the invention are described in detail below with reference to the attached drawings, but the invention can be implemented in a number of different ways, which are defined and covered by the claims.

Examples:

the embodiment shows three groups of crushing assemblies 3, and the multiple groups of crushing assemblies 3 can crush materials in multiple stages, so that the crushing efficiency is ensured, as shown in fig. 1 to 9, and the embodiment is as follows:

as shown in fig. 1 and 2, the frame 1 of the present embodiment comprises frame pieces in one-to-one correspondence with the crushing assemblies 3; the single parts of the multiple groups of frames are connected along the horizontal direction (namely the material moving direction) to form a total frame 1; preferably, the inner side wall of the frame 1 is provided with a side plate made of wear-resistant materials, so that the material is prevented from wearing the frame body, and the lower end of the frame 1 is in an open state, so that the material can fall out from the lower end.

The crushing assembly 3 comprises a movable jaw assembly 3.1, a movable roller assembly 3.2, a tensioning assembly 3.3 and an adjusting assembly 3.4, and is specifically as follows:

as shown in fig. 1, 3 and 4, the movable jaw assembly 3.1 comprises an eccentric shaft 3.11, a movable jaw 3.12 and a jaw plate 3.13; the eccentric shaft 3.11 is arranged on the frame 1 through a bearing structure, the eccentric shaft 3.11 is in eccentric fit (such as hole fit) with the movable jaw 3.12, the eccentric shaft 3.11 is connected with a driving assembly (particularly a movable jaw driving assembly), the driving assembly provides power to drive the eccentric shaft 3.11 to rotate, and the movable jaw 3.12 performs eccentric motion around the eccentric shaft 3.11; the jaw plate 3.13 is arranged at the lower end of the movable jaw 3.12, the jaw plate 3.13 is an extrusion part in direct contact with materials, and the jaw plate 3.13 moves eccentrically along with the jaw 3.12, so that the jaw plate 3.13 can extrude and crush the materials; the angle between the jaw plate 3.13 (the jaw plate 3.13 when in the lowest position) and the material movement direction is omega, and omega formed by the jaw plates 3.13 of the multiple crushing assemblies 3 is sequentially reduced along the material movement direction (in the preferred embodiment, the first omega is 25 degrees, the second omega is 21 degrees, and the second omega is 17 degrees). In order to increase the extrusion effect, corrugated bulges can be arranged on the contact surface of the jaw plate 3.13 and the material.

As shown in fig. 3, 5 and 6, the movable roller assembly 3.2 includes a plurality of roller units arranged along the moving direction of the material, a crushing cavity 3.A for crushing the material is formed between the roller units and the jaw plate 3.13, in this embodiment, three groups of crushing assemblies 3 form three groups of crushing cavities 3.A, the three groups of crushing cavities 3.A are communicated to form a crushing channel, and the outlet widths L of the multiple groups of crushing cavities 3.A sequentially decrease along the moving direction of the material (the outlet width L is the vertical distance between the jaw plate and the roller units when the jaw plate rises to the highest position); the roller single piece of the embodiment specifically comprises a roller 3.21 and a roller shaft 3.22, the roller 3.21 and the roller shaft 3.22 are coaxially arranged, the roller shaft 3.22 is arranged on the frame 1 through a bearing, the roller shaft 3.22 is connected with a driving assembly (specifically, a roller driving assembly), and the driving assembly provides driving force so as to drive the roller 3.21 to rotate. In this embodiment, the shape of the movable roller 3.21 is preferably a regular prism (in this embodiment, a regular heptagon prism); 2. the rolls 3.21 of the roll units have one side face which is relatively parallel to the jaw plate 3.13 when the jaw plate 3.13 is raised to the highest position, which side face can be in direct contact with the material, whereas the rolls 3.21 do not rotate during the lowering of the jaw plate 3.13 from the highest position to the lowest position, and since the lowering action of the jaw plates 3.13 of the three sets of the roll jaw assemblies 3.1 in this embodiment is unsynchronized (the reason for the unsynchronized fact that the sets of jaw plates 3.13 are prevented from simultaneously pressing the material to cause insufficient driving power), the roll units in the three sets of the roll assemblies 3.2 of this embodiment are initially placed at different angles in order to match the unsynchronized lowered jaw plates 3.13, for example, all the rolls 3.21 in the first set of the roll assemblies 3.2 have one side face which is relatively parallel to the first set of jaw plates 3.13 during the lowering of the first set of the roll assemblies 3.13, all the rolls 3.21 in the first set of the roll assemblies 3.2 are kept in the same place during the lowering of the first set of the roll assemblies 3.13; when the first set of jaws 3.13 is lifted, the second set of jaws 3.13 is lifted, all the moving rollers 3.21 of the three sets of moving roller assemblies 3.2 rotate at the same time, one side of all the moving rollers 3.21 in the second set of moving roller assemblies 3.2 rotate to be parallel to the second set of jaws 3.13 (when the second set of jaws 3.13 reaches the highest position), then the second set of jaws 3.13 is pressed downwards, all the moving rollers 3.21 in the second set of moving roller assemblies 3.2 are kept motionless during the pressing process, and the like, and the asynchronous pressing actions of the jaws 3.13 are matched through intermittent movement of roller single pieces; 3. each side surface of the movable roller 3.21 is detachably provided with a lining plate 2.23 made of wear-resistant materials, and the shape and the size specification of the lining plate 2.23 are consistent with those of the side surface of the movable roller 3.21; the detachable mounting mode of the lining plate 2.23 can refer to the prior bolt mounting; the lining plate 2.23 is provided with a plurality of groups of bulges 3.23a along the axial direction of the movable roller 3.21 at equal intervals (such as 5-60 cm), and the bulges 3.23a are used for polishing materials.

As shown in fig. 1, 3 and 7, the tightening assembly 3.3 is used for providing elastic tension for the movable jaw 3.12, and the tightening assembly 3.3 comprises a supporting seat 3.31, a pull rod 3.32, a nut 3.33 and an elastic piece 3.34; the support seat 3.31 is installed on the frame 1 (specifically on the installation frame 1.1 of the frame 1), the pull rod 3.32 penetrates through the support seat 3.31, the pull rod 3.32 can slide relative to the support seat 3.31, the nut 3.33 is in threaded connection with the upper end of the pull rod 3.32 (the upper end of the pull rod is a threaded section), the lower end of the pull rod 3.32 is hinged with the movable jaw 3.12 through the pin shaft 3.36, the elastic element 3.34 (such as a spring) is sleeved on the pull rod 3.32, the elastic element 3.34 is located between the support seat 3.31 and the nut 3.33, and the expansion direction of the elastic element 3.34 is consistent with the axial direction of the pull rod 3.32. Preferably a washer 3.35 is arranged between the nut 3.33 and the elastic member 3.34.

As shown in fig. 1, 3 and 8, the adjusting component 3.4 is used for adjusting the outlet width L of the crushing cavity 3.A, the upper end of the frame 1 in this embodiment is provided with a mounting frame 1.1 corresponding to the adjusting component 3.4, and the adjusting component 3.4 is disposed in the mounting frame 1.1, specifically: the adjusting assembly 3.4 comprises a toggle plate 3.41, a toggle cushion 3.42 and two groups of adjusting members 3.43, wherein the two groups of adjusting members 3.43 and the toggle cushion 3.42 are arranged in the mounting frame 1.1; the adjusting piece 3.43 comprises an adjusting screw 3.431, a connecting seat 3.432 and a wedge block 3.433; the connecting seat 3.432 is fixed at one horizontal end of the mounting frame 1.1, the adjusting screw 3.431 horizontally penetrates through the connecting seat 3.432, the adjusting screw 3.431 is in threaded fit with the connecting seat 3.432, one end of the adjusting screw 3.431 is hinged with the wedge-shaped blocks 3.433, and wedge-shaped fit (sliding fit) is formed between the wedge-shaped blocks 3.433 of the two groups of adjusting members 3.43; the toggle pad 3.42 is arranged between the wedge blocks 3.433 and the toggle plate 3.41, toggle plate movable grooves for installing the toggle plate 3.41 are formed in the toggle pad 3.42 and the movable jaw 3.12, and two ends of the toggle plate 3.41 are respectively located in the toggle plate movable grooves. The working procedure of the adjusting assembly 3.4 is: when the outlet width L of the crushing cavity 3.A needs to be reduced, the adjusting screw 3.431 is screwed in, and the two groups of wedge blocks 3.433 relatively slide towards each other, so that the group of wedge blocks 3.433 close to the elbow pad 3.42 drive the elbow pad 3.42 to move downwards, the elbow pad 3.42 drives the toggle plate 3.41 to prop against the movable jaw 3.12, the toggle plate 3.41 continuously drives the movable jaw 3.12 to move downwards along with the continuous screwing in of the adjusting screw 3.431, and the outlet width L of the crushing cavity 3.A is reduced; when the outlet width L of the crushing cavity 3.A needs to be increased, the adjusting screw 3.431 is retracted in a threaded manner, and meanwhile, the movable jaw 3.12 is lifted up by screwing the nut 3.33 on the tensioning assembly in a threaded manner, so that the outlet width L of the crushing cavity 3.A is increased. Preferably, a shim plate is provided between the elbow pad 3.42 and the wedge 3.433.

The driving assembly comprises a movable jaw driving assembly 2.1 and a movable roller driving assembly 2.2, wherein the movable jaw driving assembly 2.1 is used for driving the movable jaw assembly 3.1 to perform eccentric motion, and the movable roller driving assembly 2.2 is used for driving the movable roller assembly 3.2 to rotate, and the driving assembly is specifically as follows:

as shown in fig. 1, the movable jaw driving assembly 2.1 comprises a first power element 2.11, a first chain 2.12 and a first gear transmission mechanism; the output end of the first power piece 2.11 (such as a motor) is connected with the eccentric shafts 3.11 of one group of movable jaw assemblies 3.1 through a first gear transmission mechanism (refer to the existing gear transmission), the first power piece 2.11 can drive the eccentric shafts 3.11 to rotate, and in the embodiment, the eccentric shafts 3.11 of the three groups of movable jaw assemblies 3.1 are in power transmission through the cooperation of the first chain 2.12 and the gears, namely, the first power piece 2.11 works, so that the three groups of movable jaw assemblies 3.1 can be driven to perform eccentric motion.

As shown in fig. 1 and 9, the movable jaw driving assembly 2.1 comprises a second power element 2.21, a second chain 2.22 and a second gear transmission mechanism 2.23; the second power part 2.21 (such as a motor) is connected with the movable roller assemblies 3.2 (particularly the movable roller shafts 3.22) of the group of crushing assemblies 3 through a second gear transmission mechanism 2.23, and can drive the movable roller shafts 3.22 to rotate, and the plurality of groups of movable roller shafts 3.22 in the three groups of movable roller assemblies 3.2 in the embodiment are subjected to power transmission through the cooperation of the second chain 2.22 and gears, namely, the second power part 2.21 acts and can drive all the movable roller shafts 3.22 to rotate; the second gear transmission mechanism 2.23 comprises an incomplete gear 2.231 and a matched gear 2.232, the incomplete gear 2.231 is fixed on the output end of the second power part 2.21, the incomplete gear 2.231 can be meshed with the matched gear 2.232, the matched gear 2.232 is fixed on the movable roller shafts 3.22 of a group of roller single pieces, intermittent rotation of the roller single pieces can be achieved through the incomplete gear 2.231, and the condition that one side face of the movable roller 3.21 is relatively parallel to the jaw plate 3.13 which is lifted to the highest position after the roller single pieces rotate can be met. The incomplete gear 2.231 in this embodiment is designed according to the material feeding speed requirement and the action parameters of the movable jaw 3.12 according to the prior art, and the first power member 2.11 and the second power member 2.21 in this embodiment are combined with an external control system (refer to the prior art), and the external control system is used for controlling the working states of the first power member and the second power member.

The working process of the crushing device of the embodiment is as follows:

the embodiment has three-stage crushing, which corresponds to three groups of crushing assemblies 3 respectively, and is specifically as follows:

1. primary crushing: the materials enter the first-stage crushing cavity 3.A, at the moment, the movable jaw 3.12 of the first-stage crushing assembly 3 moves eccentrically, the jaw plate 3.13 is driven by the movable jaw 3.12 to press the materials downwards, after the materials are crushed, the materials with the particle size smaller than the gap between two groups of roller single pieces fall downwards, and the movable roller driving assembly 2.2 drives all the roller single pieces to rotate, so that the materials are transported forwards;

2. secondary crushing: the materials in the first-stage crushing cavity 3.A enter the second-stage crushing cavity 3.A, the jaw plate 3.13 of the second-stage crushing assembly 3 extrudes and crushes the materials in the second-stage crushing cavity 3.A downwards, the materials with the particle size smaller than the gap between two groups of roller single pieces fall downwards, and the movable roller driving assembly 2.2 drives all the roller single pieces to rotate, so that the materials are transported forwards;

3. three-stage crushing: the materials in the second-stage crushing cavity 3.A enter the third-stage crushing cavity 3.A, the jaw plate 3.13 of the third-stage crushing assembly 3 extrudes and crushes the materials in the third-stage crushing cavity 3.A downwards, the materials with the particle size smaller than the gap between two groups of rollers fall downwards, and at the moment, the materials are basically crushed into required specifications after three-stage crushing.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The crushing device is characterized by comprising a frame (1), a driving assembly (2) and a plurality of groups of crushing assemblies (3);

the multiple groups of crushing assemblies (3) are arranged on the frame (1) along the material movement direction;

the crushing assembly (3) comprises a movable jaw assembly (3.1), a movable roller assembly (3.2) and a tensioning assembly (3.3); the movable jaw assembly (3.1) and the movable roller assembly (3.2) are arranged on the frame (1), and a crushing cavity (3. A) is formed between the movable jaw assembly (3.1) and the movable roller assembly (3.2); two ends of the tensioning assembly (3.3) are respectively connected with the frame (1) and the movable jaw assembly (3.1); the crushing cavities (3. A) formed by the crushing assemblies (3) are communicated;

the driving assembly (2) comprises a movable jaw driving assembly (2.1) and a movable roller driving assembly (2.2); the movable jaw driving assembly (2.1) is connected with the movable jaw assembly (3.1) and is used for driving the movable jaw assembly (3.1) to make eccentric motion; the movable roller driving assembly (2.2) is connected with the movable roller assembly (3.2) and is used for driving the movable roller assembly (3.2) to rotate;

the movable jaw assembly (3.1) comprises an eccentric shaft (3.11), a movable jaw (3.12) and a jaw plate (3.13); the eccentric shaft (3.11) is arranged on the frame (1), and the eccentric shaft (3.11) is connected with the movable jaw driving assembly (2.1); the movable jaw (3.12) is eccentrically matched with the eccentric shaft (3.11); the jaw plate (3.13) is arranged on the movable jaw (3.12), and a crushing cavity (3. A) is formed between the jaw plate (3.13) and the movable roller assembly (3.2);

the outlet widths L of the multiple groups of crushing cavities (3. A) are sequentially reduced along the moving direction of the materials; the included angle between the jaw plate (3.13) and the moving direction of the material is omega, and omega formed by a plurality of groups of movable jaw components (3.1) is sequentially reduced along the moving direction of the material;

the crushing assembly (3) further comprises an adjusting component (3.4) for adjusting the outlet width L of the crushing cavity (3. A); the adjusting assembly (3.4) comprises a toggle pad (3.42), a toggle plate (3.41) and two groups of adjusting pieces (3.43); the adjusting piece (3.43) comprises an adjusting screw (3.431), a connecting seat (3.432) and a wedge block (3.433); the connecting seat (3.432) is arranged on the frame (1); the adjusting screw (3.431) is in threaded connection with the connecting seat (3.432), one end of the adjusting screw (3.431) is hinged with the wedge-shaped blocks (3.433), and the wedge-shaped blocks (3.433) of the two groups of adjusting pieces (3.43) are in wedge-shaped fit; the toggle pad (3.42) is arranged between the toggle plate (3.41) and the group of wedge blocks (3.433), toggle plate movable grooves are formed in the toggle pad (3.42) and the movable jaw (3.12), two ends of the toggle plate (3.41) are respectively arranged in the toggle plate movable grooves, and the toggle plate (3.41) and the movable jaw (3.12) are driven to move through the wedge blocks (3.433) so as to adjust the outlet width L;

the movable jaw driving assembly (2.1) comprises a first power piece (2.11), a first chain (2.12) and a first gear transmission mechanism; the output end of the first power piece (2.11) is connected with the eccentric shafts (3.11) of a group of movable jaw assemblies (3.1) through a first gear transmission mechanism; the eccentric shafts (3.11) of the movable jaw assemblies (3.1) are in power transmission through the cooperation of the first chain (2.12) and the gears;

the movable roller driving assembly (2.2) comprises a second power piece (2.21), a second chain (2.22) and a second gear transmission mechanism (2.23); the second power piece (2.21) is connected with a group of movable roller assemblies (3.2) through a second gear transmission mechanism (2.23); the dynamic roller assemblies (3.2) of the multiple groups of crushing assemblies (3) are matched with each other through a second chain (2.22) and a gear to transmit power; the second gear transmission mechanism (2.23) comprises an incomplete gear (2.231) arranged on the output end of the second power piece (2.21) and a matched gear (2.232) arranged on the movable roller assembly (3.2).

2. The crushing device according to claim 1, characterized in that the tightening assembly (3.3) comprises a support seat (3.31), a pull rod (3.32), a nut (3.33) and an elastic element (3.34); the supporting seat (3.31) is arranged on the frame (1); one end of the pull rod (3.32) is connected with a nut (3.33), and the other end of the pull rod is hinged with the movable jaw (3.12); the elastic piece (3.34) is arranged between the supporting seat (3.31) and the nut (3.33), and the expansion and contraction directions of the elastic piece (3.34) are consistent with the axial directions of the pull rod (3.32).

3.A crushing device according to claim 1, characterized in that the moving roller assembly (3.2) comprises a plurality of roller units arranged on the frame (1) in the direction of movement of the material; the roller single piece comprises a movable roller (3.21) and a movable roller shaft (3.22), and the movable roller (3.21) and the movable roller shaft (3.22) are coaxially arranged; the movable roller shaft (3.22) is connected with a matching gear (2.232) of the second gear transmission mechanism (2.23).

4. A crushing device according to claim 3, characterized in that the shape of the moving roll (3.21) is a regular prism.

5. A crushing device according to claim 4, characterized in that at least one side of the moving roll (3.21) is arranged relatively parallel to the highest jaw (3.13) when the jaw (3.13) is moved away from the material to the highest position.

6. A crushing device according to claim 4, characterized in that the movable roller (3.21) is detachably provided with a backing plate (3.23) on its side; the shape and the specification of the lining plate (3.23) are matched with the side surface of the movable roller (3.21); a plurality of groups of bulges (3.23 a) are arranged on the lining plate (3.23).