CN111437906A

CN111437906A - High-efficiency crusher

Info

Publication number: CN111437906A
Application number: CN202010138205.1A
Authority: CN
Inventors: 李晓峰; 裘孝东; 应奎; 刘松剑
Original assignee: Shengzhou Lutong Cement Products Co Ltd
Current assignee: Shengzhou Lutong Cement Products Co Ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-07-24
Anticipated expiration: 2040-03-03
Also published as: CN111437906B

Abstract

The invention discloses a high-efficiency crusher, which has the technical scheme that: including broken case, broken chamber has been seted up to the inside of broken case, the external fixation of broken case has a servo motor, still includes: the crushing device comprises a fixed lining plate and a power lining plate, wherein the fixed lining plate is fixed in the crushing cavity, and the power lining plate is connected in the crushing cavity in a swinging manner; the first power transmission mechanism is driven by the first servo motor and is used for driving the power lining plate to shake; a bulk material return mechanism; this high efficiency breaker is when using, and the caking material is arranged in the broken intracavity in the broken case and is broken, can drive undamaged bold material slewing bearing again and carry the damage when broken, can guarantee the quality of broken thing, in addition because the bold thing is dialled the mechanism and is also relied on first servo motor to drive, so the demand of power spare reduces to some extent.

Description

High-efficiency crusher

Technical Field

The invention relates to the field of crushing devices, in particular to a high-efficiency crusher.

Background

Crushers are widely used in various fields of industrial production for crushing large and agglomerated materials into small pieces, and the crushers are required for treating agglomerated fertilizers in the fertilizer industry.

Chinese patent with publication number CN110679305A discloses a mobile crusher, including the main tributary strut, the bottom side fixed mounting of main tributary strut has the truckle of removal, the pan feeding mouth is installed to the upper end of main tributary strut, the downside fixed mounting of pan feeding mouth has the feeding control motor, the feeding control motor has the driven rim plate of feeding through drive belt swing joint, the bottom side fixed mounting of pan feeding mouth has the bumper shock absorber backup pad, one side fixed mounting of pan feeding mouth has broken room, the both sides of broken room are run through and are installed the driven rim plate, the driven rim plate passes through the driving chain and links to each other with broken driving motor, the downside fixed mounting that the downside of broken room is located the discharge gate has ejection of compact carriage, the one end fixed mounting of ejection of compact carriage has main drive roller.

Foretell this kind of portable breaker is through carrying out the subdivision with the discharge gate, through the discharge gate of the four groups equidirectional that set up, can arrange the material according to the size of certain specification when actually carrying out the ejection of compact, conveniently exports different sizes. However, the mobile crusher described above still has some disadvantages, such as: firstly, the adopted structure is cutting and crushing, and blades of the cutting and crushing tool are easy to wear and need to be replaced frequently; secondly, when the materials are crushed, the large un-crushed materials cannot be recycled and continuously crushed, and the damage and the large material recovery cannot be realized by one power part; thirdly, the crushed materials are inconvenient to be automatically discharged.

Disclosure of Invention

In view of the problems mentioned in the background, it is an object of the present invention to provide a high efficiency crusher to solve the problems mentioned in the background.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a high efficiency breaker, includes broken case, broken chamber has been seted up to the inside of broken case, the external fixation of broken case has first servo motor, still includes:

the crushing device comprises a fixed lining plate and a power lining plate, wherein the fixed lining plate is fixed in the crushing cavity, and the power lining plate is connected in the crushing cavity in a swinging manner;

the first power transmission mechanism is driven by the first servo motor and is used for driving the power lining plate to shake;

the large block material withdrawing mechanism is arranged below the position between the fixed lining plate and the power lining plate in the crushing cavity;

the second power transmission mechanism is driven by the first servo motor and is used for driving the large block material return mechanism to operate in a stepping mode;

and the conveying mechanism is arranged below the large-block material withdrawing mechanism in the crushing cavity and outputs the crushed materials from one side of the crushing box.

By adopting the technical scheme, when the high-efficiency crusher is used, the caked materials are placed in the crushing cavity in the crushing box for crushing, when the first servo motor is started, the first servo motor can drive the power lining plate to rock by virtue of the first power transmission assembly, the caked materials can be crushed by utilizing the fixed lining plate and the power lining plate, and the fixed lining plate and the power lining plate are adopted for crushing, so that the high-efficiency crusher is long in service life and does not need to be frequently replaced; in addition, when the high-efficiency crusher is used, the massive material return mechanism can be utilized to drive an undamaged massive material to be conveyed in a rotary mode and damaged again, the quality of crushed materials can be guaranteed, and in addition, the massive material return mechanism is also driven by the first servo motor, so that the requirement of a power part is reduced; moreover, utilize conveying mechanism can be with the automatic discharge of the material that the breakage was accomplished, conveniently collect.

Preferably, first power transmission mechanism includes first bracing piece, crank disc, first connecting rod, second connecting rod and third connecting rod, first bracing piece passes through the bearing and rotates to be connected in the broken incasement, a servo motor drives first bracing piece rotates, the crank disc installation is fixed first bracing piece is outside, the one end of first connecting rod articulates on the crank disc, the other end of first connecting rod articulates on the second connecting rod, the one end of second connecting rod articulates in the broken incasement, the other end of second connecting rod with articulate between the one end of third connecting rod, the other end of third connecting rod is fixed on the power welt.

Through adopting above-mentioned technical scheme, when first servo motor started, can drive the first bracing piece among the first power transmission mechanism and rotate to drive the whole circle of crank dish and rotate, thereby make first connecting rod, second connecting rod and third connecting rod swing, thereby drive the power welt and rock, first power transmission mechanism has the advantage that the structure operation is stable.

Preferably, bold thing is dialled back mechanism and is included second bracing piece, supporting ring cover, first fender ring, second fender ring and a plurality of and dial the board back, the second bracing piece passes through the bearing and rotates to be connected in broken incasement, supporting ring cover threaded connection be in the outside of second bracing piece, first fender ring is fixed the second bracing piece is outside, the second keeps off ring threaded connection outside the second bracing piece, a plurality of dial back the board and fix respectively the supporting ring is sheathe in.

Through adopting above-mentioned technical scheme, when second bracing piece rotated in the bold thing redial mechanism, it can drive the bracing ring cover and the board rotation of dialling back on it to drive the bold not broken material and rotate along with the board of dialling back, the bracing ring cover can make things convenient for stable installation to fix outside the second bracing piece in addition, rely on first fender ring and second to keep off the ring and can carry on spacingly and can guarantee its installation stability for the installation of bracing ring cover.

Preferably, the second power transmission mechanism includes a crank rod, a fourth connecting rod, a triangular auxiliary plate, a driving pawl and a ratchet wheel, one end of the crank rod is fixed at the end of the motor shaft of the first servo motor, the fourth connecting rod is hinged at the end of the crank rod, the other end of the fourth connecting rod is hinged at one corner of the triangular auxiliary plate, the other corner of the triangular auxiliary plate is rotatably connected to the outside of the crushing box, the driving pawl is fixed at the other corner of the triangular auxiliary plate, the ratchet wheel is rotatably connected to the outside of the crushing box, the driving pawl and the ratchet wheel are matched with each other, and one end of the second support rod is fixedly connected to the end face of the ratchet wheel.

Through adopting above-mentioned technical scheme, when first servo motor started, it can drive the crank lever and rotate to drive the swing of fourth connecting rod, thereby drive triangle accessory plate and rock, drive the drive pawl then and rock, thereby the drive pawl drives the ratchet and advances a position, thereby can drive the step-by-step rotation of second bracing piece.

Preferably, conveying mechanism includes second servo motor, drive roll, driven voller, transmission band and side fender clitellum, second servo motor fixes broken case is outside, the drive roll with the driven voller rotates respectively to be connected on the broken case, the transmission band transmission is connected the drive roll with the driven voller is outside, the side fender clitellum is fixed the transmission band both sides, second servo motor drive the drive roll rotates.

Through adopting above-mentioned technical scheme, when the second servo motor among the start-up conveying subassembly, it can drive the drive roll and rotate, can drive the transmission band operation under the drive coordination of driven voller, and the side keeps off the clitellum and can shelter from the transmission band, prevents that the material from spilling outward.

Preferably, the inner part of the crushing cavity is respectively fixed with an auxiliary baffle at two sides of the second support rod.

Through adopting above-mentioned technical scheme, supplementary baffle can prevent that the bold uncrushed material from discharging from the transmission band top.

Preferably, the fixed lining plate is provided with a plurality of first protruding ribs integrally formed with the fixed lining plate, the power lining plate is provided with a plurality of second protruding ribs integrally formed with the power lining plate, and one surface of the power lining plate, which deviates from the second protruding ribs, is provided with a plurality of reinforcing ribs.

Through adopting above-mentioned technical scheme, the life of fixed welt can be improved to first protruding rib on the fixed welt, and the intensity of power welt can be increased to second protruding rib and strengthening rib on the power welt.

Preferably, the outside of the crushing box is also rotatably connected with a non-return pawl matched with the ratchet wheel, and a torsion spring is arranged outside a rotating shaft of the non-return pawl.

Through adopting above-mentioned technical scheme, under the effect of torsional spring, the non return pawl can play the non return effect to the ratchet.

Preferably, a counterweight rod is fixed on the check pawl.

Through adopting above-mentioned technical scheme, the non return effect of non return pawl can be increased to the counter weight pole on the non return pawl.

Preferably, a hopper communicated with the crushing cavity is fixed above the fixed lining plate and the power lining plate of the crushing box.

Through adopting above-mentioned technical scheme, the hopper of broken case top can make things convenient for the operator to annotate the material.

In summary, the invention mainly has the following beneficial effects:

when the high-efficiency crusher is used, caking materials are placed in a crushing cavity in a crushing box for crushing, when a first servo motor is started, the first servo motor can drive a power lining plate to rock by virtue of a first power transmission assembly, the caking materials can be crushed by utilizing a fixed lining plate and the power lining plate, and the fixed lining plate and the power lining plate are adopted for crushing, so that the high-efficiency crusher is long in service life and does not need to be frequently replaced;

when the high-efficiency crusher is used, the massive material return mechanism can be utilized to drive an undamaged massive material to be conveyed in a rotary mode, the massive material is damaged again, the quality of the crushed material can be guaranteed, and in addition, the massive material return mechanism is also driven by the first servo motor, so that the requirement of a power part is reduced;

and thirdly, the materials which are crushed can be automatically discharged by utilizing the conveying mechanism, and the materials are conveniently collected.

Drawings

FIG. 1 is a schematic diagram of a high efficiency crusher;

FIG. 2 is a structural cross-sectional view of a high efficiency crusher;

FIG. 3 is an enlarged view taken at A in FIG. 2;

FIG. 4 is one of the schematic views of the high efficiency crusher after concealing the crushing bin;

FIG. 5 is a second schematic view of the high efficiency crusher after the crushing box is hidden;

fig. 6 is a schematic structural view for showing a first power transmission mechanism;

fig. 7 is a schematic structural view for showing the conveying mechanism.

Reference numerals: 1. a crushing box; 11. a crushing chamber; 12. a first servo motor; 13. fixing the lining plate; 14. a power lining plate; 2. a first power transmission mechanism; 3. a bulk material return mechanism; 4. a second power transmission mechanism; 5. a conveying mechanism; 21. a first support bar; 22. a crank disk; 23. a first link; 24. a second link; 25. a third link; 31. a second support bar; 32. a support ring sleeve; 33. a first retainer ring; 34. a second retainer ring; 35. a dial-back plate; 41. a crank lever; 42. a fourth link; 43. a triangular auxiliary plate; 44. a drive pawl; 45. a ratchet wheel; 51. a second servo motor; 52. a drive roll; 53. a driven roller; 54. a conveyor belt; 55. a side barrier ring belt; 111. an auxiliary baffle; 131. a first projecting rib; 141. a second projecting rib; 142. reinforcing ribs; 46. a non-return pawl; 461. a torsion spring; 462. a weight lever; 15. and (4) a hopper.

Detailed Description

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

Example 1

Referring to fig. 2 and 4, a high efficiency crusher mainly comprises the following parts:

the crushing box comprises a crushing box 1, wherein a crushing cavity 11 is formed in the crushing box 1, and a first servo motor 12 is fixed outside the crushing box 1;

the crushing device comprises a fixed lining plate 13 and a power lining plate 14, wherein the fixed lining plate 13 is fixed in a crushing cavity 11, and the power lining plate 14 is connected in the crushing cavity 11 in a swinging mode;

the first power transmission mechanism 2, wherein the first power transmission mechanism 2 is driven by a first servo motor 12, and the first power transmission mechanism 2 is used for driving a power lining plate 14 to rock;

the large block withdrawing mechanism 3 is arranged below the space between the fixed lining plate 13 and the dynamic lining plate 14 in the crushing cavity 11;

the second power transmission mechanism 4, wherein the second power transmission mechanism 4 is driven by the first servo motor 12, and the second power transmission mechanism 4 is used for driving the large block material withdrawing mechanism 3 to operate in a stepping mode;

and a conveying mechanism 5, wherein the conveying mechanism 5 is arranged below the large-block material withdrawing mechanism 3 in the crushing cavity 11, and the conveying mechanism 5 outputs the crushed materials from one side of the crushing box 1.

Referring to fig. 2 and 4, when the high-efficiency crusher is in use, the caked materials are placed in the crushing cavity 11 in the crushing box 1 for crushing, when the first servo motor 12 is started, the first servo motor can drive the power lining plate 14 to swing by means of the first power transmission assembly, the caked materials can be crushed by the aid of the fixed lining plate 13 and the power lining plate 14, and the fixed lining plate 13 and the power lining plate 14 are used for crushing, so that the high-efficiency crusher is long in service life and does not need to be replaced frequently; in addition, when the high-efficiency crusher is used, the massive material return mechanism 3 can be utilized to drive an undamaged massive material to be conveyed in a rotary mode and damaged again, the quality of crushed materials can be guaranteed, and in addition, the massive material return mechanism 3 is also driven by the first servo motor 12, so that the requirement of a power part is reduced; moreover, utilize conveying mechanism 5 can be with the automatic discharge of the material that the breakage was accomplished, conveniently collect.

Referring to fig. 4 and 6, the first power transmission mechanism 2 includes a first support rod 21, a crank disc 22, a first connecting rod 23, a second connecting rod 24 and a third connecting rod 25, wherein the first support rod 21 is rotatably connected in the crushing box 1 through a bearing, the first servo motor 12 drives the first support rod 21 to rotate, the crank disc 22 is fixedly installed outside the first support rod 21, one end of the first connecting rod 23 is hinged on the crank disc 22, the other end of the first connecting rod 23 is hinged on the second connecting rod 24, one end of the second connecting rod 24 is hinged in the crushing box 1, the other end of the second connecting rod 24 is hinged with one end of the third connecting rod 25, and the other end of the third connecting rod 25 is fixed on the power lining plate 14; when the first servo motor 12 is started, the first support rod 21 in the first power transmission mechanism 2 can be driven to rotate, so that the crank disc 22 is driven to rotate in a whole circle, the first connecting rod 23, the second connecting rod 24 and the third connecting rod 25 swing, the power lining plate 14 is driven to swing, and the first power transmission mechanism 2 has the advantage of stable structure operation.

Referring to fig. 2 and 5, the large block withdrawing mechanism 3 includes a second support rod 31, a support ring sleeve 32, a first baffle ring 33, a second baffle ring 34 and a plurality of withdrawing plates 35, the second support rod 31 is rotatably connected in the crushing box 1 through a bearing, the support ring sleeve 32 is screwed outside the second support rod 31, the first baffle ring 33 is fixed outside the second support rod 31, the second baffle ring 34 is screwed outside the second support rod 31, and the plurality of withdrawing plates 35 are respectively fixed on the support ring sleeve 32; when the second support rod 31 rotates in the massive object return mechanism 3, the second support rod can drive the support ring sleeve 32 and the return plate 35 thereon to rotate, so that the massive uncrushed material is driven to rotate along with the return plate 35, in addition, the support ring sleeve 32 can be conveniently and stably installed and fixed outside the second support rod 31, and the first retaining ring 33 and the second retaining ring 34 can limit the installation of the support ring sleeve 32 and can ensure the installation stability of the support ring sleeve.

Referring to fig. 4 and 5, the second power transmission mechanism 4 includes a crank rod 41, a fourth connecting rod 42, a triangular auxiliary plate 43, a driving pawl 44 and a ratchet wheel 45, wherein one end of the crank rod 41 is fixed at the end of the motor shaft of the first servo motor 12, the fourth connecting rod 42 is hinged at the end of the crank rod 41, the other end of the fourth connecting rod 42 is hinged at one corner of the triangular auxiliary plate 43, the other corner of the triangular auxiliary plate 43 is rotatably connected to the outside of the crushing box 1, the driving pawl 44 is fixed at the other corner of the triangular auxiliary plate 43, the ratchet wheel 45 is rotatably connected to the outside of the crushing box 1, the driving pawl 44 is matched with the ratchet wheel 45, and one end of the second support rod 31 is fixedly connected to the end surface of the ratchet; when the first servo motor 12 is started, it can drive the crank rod 41 to rotate, thereby driving the fourth connecting rod 42 to swing, thereby driving the triangular auxiliary plate 43 to swing, and then driving the driving pawl 44 to swing, thereby driving the ratchet wheel 45 to advance one position by the driving pawl 44, thereby driving the second supporting rod 31 to rotate in a stepping manner.

Referring to fig. 2 and 7, the conveying mechanism 5 includes a second servo motor 51, a driving roller 52, a driven roller 53, a conveying belt 54 and a side belt 55, wherein the second servo motor 51 is fixed outside the crushing box 1, the driving roller 52 and the driven roller 53 are respectively rotatably connected to the crushing box 1, the conveying belt 54 is in transmission connection with the driving roller 52 and the driven roller 53, the side belt 55 is fixed on both sides of the conveying belt 54, and the second servo motor 51 drives the driving roller 52 to rotate; when the second servo motor 51 in the conveying assembly is started, the second servo motor can drive the driving roller 52 to rotate, the conveying belt 54 can be driven to operate under the transmission matching of the driven roller 53, and the side blocking belt 55 can block the conveying belt 54 to prevent the materials from scattering outwards.

Referring to fig. 1 and 2, in which auxiliary blocking plates 111 are respectively fixed inside the crushing chamber 11 at both sides of the second support bar 31, the auxiliary blocking plates 111 can prevent large uncrushed materials from being discharged above the conveyor belt 54.

Referring to fig. 2 and 3, there are five first projecting ribs 131 formed integrally with the fixed backing plate 13 and five second projecting ribs 141 formed integrally with the power backing plate 14, wherein the power backing plate 14 has four reinforcing ribs 142 on the side facing away from the second projecting ribs 141; the first projecting ribs 131 on the fixed liner plate 13 can improve the service life of the fixed liner plate 13, and the second projecting ribs 141 and the reinforcing ribs 142 on the power liner plate 14 can increase the strength of the power liner plate 14.

Referring to fig. 4 and 5, a check pawl 46 engaged with the ratchet wheel 45 is further rotatably connected to the outside of the crushing box 1, and a torsion spring 461 is provided outside the rotating shaft of the check pawl 46; under the action of the torsion spring 461, the check pawl 46 can play a check effect on the ratchet wheel 45; wherein a weight rod 462 is fixed to the non-return pawl 46, wherein the weight rod 462 on the non-return pawl 46 is able to increase the non-return effect of the non-return pawl 46.

Referring to fig. 1, wherein the crushing bin 1 is fixed above a fixed liner 13 and a powered liner 14 with a hopper 15 in communication with the crushing chamber 11.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that 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 a high efficiency breaker, includes broken case (1), broken chamber (11) have been seted up to the inside of broken case (1), the external fixation of broken case (1) has first servo motor (12), its characterized in that: further comprising:

the crushing device comprises a fixed lining plate (13) and a power lining plate (14), wherein the fixed lining plate (13) is fixed in the crushing cavity (11), and the power lining plate (14) is connected in the crushing cavity (11) in a swinging mode;

the first power transmission mechanism (2), the first power transmission mechanism (2) is driven by the first servo motor (12), and the first power transmission mechanism (2) is used for driving the power lining plate (14) to shake;

the large-block material withdrawing mechanism (3), the large-block material withdrawing mechanism (3) is arranged below the space between the fixed lining plate (13) and the power lining plate (14) in the crushing cavity (11);

the second power transmission mechanism (4), the second power transmission mechanism (4) is driven by the first servo motor (12), and the second power transmission mechanism (4) is used for driving the large block material return mechanism (3) to run in a stepping mode;

and the conveying mechanism (5) is arranged below the large-block material withdrawing mechanism (3) in the crushing cavity (11), and crushed materials are output from one side of the crushing box (1) by the conveying mechanism (5).

2. A high efficiency crusher as claimed in claim 1, wherein: the first power transmission mechanism (2) comprises a first supporting rod (21), a crank disc (22), a first connecting rod (23), a second connecting rod (24) and a third connecting rod (25), the first supporting rod (21) is rotatably connected in the crushing box (1) through a bearing, the first servo motor (12) drives the first supporting rod (21) to rotate, the crank disc (22) is fixedly arranged outside the first supporting rod (21), one end of the first connecting rod (23) is hinged on the crank disc (22), the other end of the first connecting rod (23) is hinged on the second connecting rod (24), one end of the second connecting rod (24) is hinged in the crushing box (1), the other end of the second connecting rod (24) is hinged with one end of the third connecting rod (25), the other end of the third connecting rod (25) is fixed on the power lining plate (14).

3. A high efficiency crusher as claimed in claim 1, wherein: big thing is dialled back mechanism (3) and is included second bracing piece (31), support ring cover (32), first fender ring (33), second fender ring (34) and a plurality of and dial back board (35), second bracing piece (31) are rotated through the bearing and are connected in broken case (1), support ring cover (32) threaded connection be in the outside of second bracing piece (31), first fender ring (33) is fixed second bracing piece (31) are outside, second fender ring (34) threaded connection be in second bracing piece (31) are outside, a plurality of dial back board (35) and fix respectively support ring cover (32) are last.

4. A high efficiency crusher as claimed in claim 3, wherein: the second power transmission mechanism (4) comprises a crank rod (41), a fourth connecting rod (42), a triangular auxiliary plate (43), a driving pawl (44) and a ratchet wheel (45), one end of the crank rod (41) is fixed at the end part of a motor shaft of the first servo motor (12), the fourth connecting rod (42) is hinged at the end part of the crank rod (41), the other end of the fourth connecting rod (42) is hinged at one corner of the triangular auxiliary plate (43), the other corner of the triangular auxiliary plate (43) is rotatably connected to the outside of the crushing box (1), the driving pawl (44) is fixed at the other corner of the triangular auxiliary plate (43), the ratchet wheel (45) is rotationally connected to the outside of the crushing box (1), the driving pawl (44) is matched with the ratchet wheel (45), one end of the second support rod (31) is fixedly connected with the end face of the ratchet wheel (45).

5. A high efficiency crusher as claimed in claim 1, wherein: conveying mechanism (5) include second servo motor (51), drive roller (52), driven voller (53), transmission band (54) and side fender clitellum (55), second servo motor (51) are fixed crushing case (1) is outside, drive roller (52) with driven voller (53) rotate respectively to be connected on crushing case (1), transmission band (54) transmission is connected drive roller (52) with driven voller (53) are outside, side fender clitellum (55) are fixed transmission band (54) both sides, second servo motor (51) drive roller (52) rotate.

6. A high efficiency crusher as claimed in claim 3, wherein: auxiliary baffles (111) are respectively fixed at two sides of the second supporting rod (31) in the crushing cavity (11).

7. A high efficiency crusher as claimed in claim 1, wherein: fixed welt (13) are gone up and have a plurality of rather than integrated into one piece's first protruding rib (131), power welt (14) are gone up and have a plurality of rather than integrated into one piece's second protruding rib (141), power welt (14) are deviating from the one side of second protruding rib (141) has a plurality of strengthening rib (142).

8. A high efficiency crusher as claimed in claim 4, wherein: the outside of crushing case (1) still rotate be connected with ratchet (45) complex non return pawl (46), the axis of rotation outside of non return pawl (46) is provided with torsional spring (461).

9. A high efficiency crusher as claimed in claim 8, wherein: a counterweight rod (462) is fixed on the check pawl (46).

10. A high efficiency crusher as claimed in claim 1, wherein: and a hopper (15) communicated with the crushing cavity (11) is fixed above the fixed lining plate (13) and the power lining plate (14) of the crushing box (1).