CN219051439U - Jaw crusher fixed jaw plate capable of being replaced quickly - Google Patents

Abstract

The utility model belongs to the technical field of crushers, and particularly relates to a jaw crusher fixed jaw plate capable of being replaced quickly, which comprises a fixed jaw bed and a fixed jaw plate, wherein the fixed jaw bed is arranged in a machine body, and the lower end of the fixed jaw bed is provided with a bearing step for supporting the bottom of the fixed jaw plate; the upper end of the fixed jaw bed is provided with a pressing plate extending towards the fixed jaw plate, the lower surface of the pressing plate and the upper end surface of the fixed jaw plate form a pressing groove, and a pressing block can be slidably arranged in the pressing groove and is fixed on the fixed jaw bed by a tension bolt so as to press and fix the fixed jaw plate; the limiting groove is formed in the lower surface of the compression block, the limiting groove extends along the width direction of the compression block and penetrates through the lateral surfaces of two sides in the width direction of the compression block, a limiting part is detachably arranged at the corresponding position of the top end of the fixed jaw plate, and the limiting part is movably located in the limiting groove. The fixed jaw plate is simple and convenient to mount and dismount, and the fixed jaw plate can be quickly replaced.

Description

Jaw crusher fixed jaw plate capable of being replaced quickly

Technical Field

The utility model relates to the technical field of crushers, in particular to a jaw crusher fixed jaw plate capable of being replaced quickly.

Background

The jaw crusher is mainly used for medium-granularity crushing of various ores and massive materials, and is widely applied to industries such as mines, smelting, building materials, roads, railways, water conservancy, chemical industry and the like. The working part of the jaw crusher is two jaws, one fixed jaw (fixed jaw) is fixed on a fixed jaw bed of the crusher body through vertical bolts or slightly camber at the upper end, the other fixed jaw is a movable jaw (movable jaw), the movable jaw and the fixed jaw form a crushing cavity with a large upper part and a small lower part, materials to be crushed enter the crushing cavity, the movable jaw and the fixed jaw do periodic reciprocating motion, an angle is formed between the movable jaw and the fixed jaw to extrude the materials, the materials are crushed by extrusion, bending and splitting, the crushed products are discharged from the lower part, and the crushing of the materials is realized.

In the prior art, as the relatively fragile accessory of jaw breaker, need to carry out the change operation to deciding the jaw after deciding the jaw wearing and tearing, but decide the jaw is bulky, generally directly passes through a large amount of bolts at present and fixes it on deciding the jaw bed, when needs change, need the manual work to demolish and decide the jaw upper portion, the lower part all bolts just can take out the wearing and tearing from the organism after deciding the jaw, and the dismouting operation of deciding the jaw in the change process is inconvenient, and consuming time is longer, has reduced work efficiency, can't realize deciding the quick replacement of jaw.

Disclosure of Invention

It is an object of the present utility model to address at least the above problems and/or disadvantages and to provide at least the advantages described below.

In order to solve the defects in the prior art, the utility model provides a jaw crusher fixed jaw plate capable of being replaced quickly, which comprises a fixed jaw bed and a fixed jaw plate, wherein the fixed jaw bed is arranged in a machine body, and the lower end of the fixed jaw bed is provided with a bearing step for supporting the bottom of the fixed jaw plate;

the upper end of the jaw fixing bed is provided with a pressing plate extending towards the jaw fixing plate, the lower surface of the pressing plate and the upper end surface of the jaw fixing plate form a pressing groove, and a pressing block can be slidably arranged in the pressing groove and is fixed on the jaw fixing bed by a tension bolt so as to press and fix the jaw fixing plate;

the limiting groove is formed in the lower surface of the compression block, the limiting groove extends along the width direction of the compression block and penetrates through the lateral surfaces of two sides in the width direction of the compression block, a limiting part is detachably arranged at the corresponding position of the top end of the fixed jaw plate, and the limiting part is movably located in the limiting groove.

Further, the bearing step is followed decide jaw length direction extension, the bearing step upper surface is from deciding jaw to decide jaw direction slope ascending inclined plane a, decide the jaw lower extreme to be equipped with the butt and be in joint portion on the bearing step, joint portion is followed decide jaw length direction extension, joint lower surface is from deciding jaw to decide jaw direction slope ascending inclined plane b, inclined plane b with inclined plane a contact cooperation.

Further, the lower end of the fixed jaw plate is provided with an extension part, and the extension part extends downwards to be positioned on the side surface of the bearing step so as to shield the bearing step.

Further, the tension bolt comprises a screw rod, an anti-rotation head with a square cross section is arranged at one end of the screw rod, a fixed groove and a through hole are sequentially formed in the direction of the fixed jaw bed from the fixed jaw plate on the compression block, the cross section of the fixed groove is square, the screw rod sequentially penetrates through the fixed groove, the through hole and the fixed jaw bed to fix the compression block in the compression groove, the anti-rotation head is positioned in the fixed groove, and the screw rod penetrates out of one end spiral connecting nut of the fixed jaw bed.

Further, the width of the fixing groove is larger than the width of the anti-rotation head.

Further, the length of the fixing groove is greater than the length of the anti-rotation head.

Further, the upper surface of the pressing block is an inclined surface c which is inclined upwards from the fixed jaw bed to the fixed jaw plate, the lower surface of the pressing block is an inclined surface e which is inclined downwards from the fixed jaw bed to the fixed jaw plate, the lower surface of the pressing plate is an inclined surface d which is in contact fit with the inclined surface c, and the upper end surface of the fixed jaw plate is an inclined surface f which is in contact fit with the inclined surface e.

The utility model at least comprises the following beneficial effects: the machine body supports the fixed jaw bed, the bearing step at the bottom of the fixed jaw bed is used for supporting and fixing the fixed jaw plate, the compression groove formed by the lower surface of the pressing plate and the upper end surface of the fixed jaw plate is used for clamping the compression block, the compression block is tightly fixed on the fixed jaw bed under the action of the tension bolt, so that the fixed jaw plate is tightly fixed on the fixed jaw bed by applying tension force to the compression block in the width direction of the fixed jaw plate, meanwhile, the compression block is tightly clamped in the compression groove by the tension bolt, so that the fixed jaw plate is tightly compressed in the height direction of the fixed jaw plate, and the bearing step is matched with the compression block to effectively prevent the fixed jaw plate from moving up and down in the vertical direction and from moving left and right in the width horizontal direction when the crusher works; the spacing groove of compact heap is used for holding the spacing portion of fixed jaw up end, and when the compact heap was slided into the compact heap, the spacing groove slip card was on spacing portion, and when the compact heap was taut fixed by the tensioning bolt, spacing position can play the limiting effect to the jaw of deciding in the spacing inslot, and spacing groove and spacing portion cooperation prevent effectively that the jaw of deciding from moving around in length direction to this makes the jaw of deciding by all-round fixed, thereby will decide the stable fixed mounting of jaw on deciding the jaw bed, avoid deciding the jaw and take place to remove at the course of working, guarantee jaw breaker normal operating. The limiting groove is formed in the compression block, and the limiting part is formed in the upper end of the fixed jaw plate, so that the fixed jaw plate and the fixed jaw plate are exposed in the visual field of an operator, the operator can conveniently preassemble the compression block to enable the limiting groove to be aligned to the limiting part, and the follow-up overhaul, maintenance and adjustment of the compression block, the limiting part and the limiting groove are also facilitated; the limiting groove is formed in the compression block, the compression block is small in size, convenient to clamp, convenient to process and manufacture; the limit part is detachably arranged, so that when the limit part is damaged, the limit part can be replaced without replacing the whole fixed jaw plate, the cost is saved, and meanwhile, when the limit part is replaced, the operation can be replaced only by removing the tension bolt and the compression block, the fixed jaw plate is not required to be taken out of the machine body, and the replacement efficiency of the limit part is improved.

By adopting the utility model, the lower end of the fixed jaw plate is supported and fixed by the bearing step, the upper end of the fixed jaw plate is fixed by the compression block and the tension bolt, when the fixed jaw plate needs to be replaced, the fixed jaw plate can be lifted out of the machine body only by removing the tension bolt and the compression block which are positioned at the upper part of the machine body, a large number of bolts at the upper end and the lower end of the fixed jaw plate are avoided, the time is saved, the working efficiency is improved, the bearing step is arranged to play a guiding and positioning role when the fixed jaw plate is installed, the fixed jaw plate is lifted into the machine body to smoothly and quickly fall on the bearing step, and quick positioning installation is realized, so that the fixed jaw plate is convenient to detach and install, the replacement work efficiency is improved, and the quick replacement of the fixed jaw plate is realized.

Drawings

Fig. 1 is a schematic view of the quick replaceable jaw crusher fixed jaw plate structure of the present utility model.

Fig. 2 is a schematic top view of the fixed jaw bed and the fixed jaw plate of the present utility model.

FIG. 3 is a schematic cross-sectional view of the structure of FIG. 2 at C-C in accordance with the present utility model.

Fig. 4 is a partially enlarged structural view of fig. 3 a according to the present utility model.

Fig. 5 is a partially enlarged structural view of the B in fig. 3 according to the present utility model.

Fig. 6 is a schematic view of the structure of the fixed jaw plate of the present utility model.

Fig. 7 is a schematic structural view of the compression block of the present utility model.

Fig. 8 is a schematic structural view of the tension bolt of the present utility model.

Reference numerals: 1-jaw fixing bed, 11-bearing step, 111-inclined plane a, 2-jaw fixing plate, 21-limit part, 22-clamping part, 221-inclined plane b, 23-extension part, 240-inclined plane f, 3-pressing plate, 310-inclined plane d, 4-compressing groove, 5-compressing block, 51-limiting groove, 52-fixing groove, 53-through hole, 540-inclined plane e, 550-inclined plane c, 6-tension bolt, 61-screw, 62-anti-rotating head and 100-machine body.

Detailed Description

The present utility model is described in further detail below with reference to the drawings to enable those skilled in the art to practice the utility model by referring to the description.

It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

Referring to fig. 1 to 8, a jaw crusher fixed jaw plate capable of being replaced quickly comprises a fixed jaw bed 1 and a fixed jaw plate 2, wherein the fixed jaw bed 1 is arranged in a machine body 100, the machine body 100 supports the fixed jaw bed 1, and a bearing step 11 for supporting the bottom of the fixed jaw plate 2 is arranged at the lower end of the fixed jaw bed 1;

the upper end of the fixed jaw bed 1 is provided with a pressing plate 3 extending towards the fixed jaw plate 2, the lower surface of the pressing plate 3 and the upper end surface of the fixed jaw plate 2 form a pressing groove 4, and a pressing block 5 can be slidably arranged in the pressing groove 4 and is fixed on the fixed jaw bed 1 by a tightening bolt 6 so as to press and fix the fixed jaw plate 2;

the lower surface of the compression block 5 is provided with a limit groove 51, the limit groove 51 extends along the width direction of the compression block 5 and penetrates through the lateral surfaces of two sides of the compression block 5 in the width direction, a limit part 21 is detachably arranged at the corresponding position of the top end of the fixed jaw plate 2, and the limit part 21 is movably arranged in the limit groove 51.

Specifically, the supporting step 11 and the fixed jaw bed 1 are integrally formed, so that the stability of the supporting step 11 is enhanced, and the fixed jaw plate 2 is further stably fixed; the pressing plate 3 and the jaw fixing bed 1 are integrally formed, so that stability is enhanced; the compact heap 5 is fixed on the jaw bed 1 by taut under the taut effect of tensioning bolt 6 so that compact heap 5 is exerted the tensioning force to it in the jaw plate 2 width direction surely, makes the jaw plate 2 surely fixed on the jaw bed 1 by taut, thereby compact heap 5 is tightly clamped in compact slot 4 by tensioning bolt 6 thereby compact heap 5 is fixed jaw plate 2 height direction and is pressed down, bearing step 11 and compact heap 5 mutually support, prevent effectively that the jaw plate 2 from taking place to reciprocate in vertical direction, prevent to decide jaw plate 2 and take place to control in width horizontal direction when the garrulous machine is during operation. The number of the compaction blocks 5 is preferably 2, so that the whole weight of the compaction blocks is reduced, the installation and the disassembly operations are convenient, the length of the compaction blocks 5 is shortened, and the processing and the manufacturing are convenient; the number of the tightening bolts 6 on each compression block 5 can be 2, 3, etc., preferably 2, and the 2 tightening bolts 6 stably fix the compression blocks 5 so as to realize stable fixed jaw plates, and meanwhile, the setting of the 2 tightening bolts 6 can finish the dismantling and installing operations in a short time, so that the replacement efficiency is quickened

The limiting groove 51 of the compression block 5 is used for accommodating the limiting part 21 on the upper end face of the fixed jaw plate 2, when the compression block 5 slides into the compression groove 4, the limiting groove 51 is clamped on the limiting part 21 in a sliding manner, when the compression block 5 is tensioned and fixed by the tension bolt 6, the limiting part 21 is positioned in the limiting groove 51 and can limit the fixed jaw plate 2, the limiting groove 51 is matched with the limiting part 21, the fixed jaw plate 2 is effectively prevented from moving forwards and backwards in the length direction, so that the fixed jaw plate 2 is fixed in an omnibearing manner, the fixed jaw plate 2 is fixedly arranged on the fixed jaw bed 1 stably, the fixed jaw plate 2 is prevented from moving in the working process, and the normal operation of the jaw crusher is ensured; the limiting grooves 51 extend through the lateral sides of the compressing block 5 in the width direction, so that the limiting grooves 51 have a abdication function, and the limiting parts 21 can be prevented from obstructing the compressing block 5 from sliding into the compressing groove 4; the limiting groove 51 is formed in the compression block 5, the limiting part 21 is arranged at the upper end of the fixed jaw plate 2, so that the fixed jaw plate and the limiting part are exposed in the visual field of an operator, the operator can conveniently preassemble the compression block 5 to enable the limiting groove 51 to be aligned with the limiting part 21, and the subsequent overhaul, maintenance and adjustment of the compression block 5, the limiting part 21 and the limiting groove 51 are also facilitated; the volume of the compression block 5 is small, the clamping is convenient, the processing is convenient, and the slotting processing and the manufacturing are convenient to carry out on the compression block 5; the limiting part 21 is detachably arranged, so that when the limiting part 21 is damaged, the limiting part 21 can be replaced without replacing the whole fixed jaw plate 2, the cost is saved, meanwhile, when the limiting part 21 is replaced, the replacement operation can be performed only by dismantling the tension bolt 6 and the compression block 5, the fixed jaw plate 2 is not required to be taken out of the machine body 100, and the replacement efficiency of the limiting part 21 is improved; the limiting part 21 can be fixed on the upper end surface of the fixed jaw plate 2 through screws, and is convenient to dismount.

In this embodiment, the lower extreme of deciding jaw 2 is supported fixedly by bearing step 11, its upper end is fixed by clamp block 5 and draw-in bolt 6, when deciding jaw 2 needs to be changed, only need demolish draw-in bolt 6 and clamp block 5 that lie in organism 1 upper portion, can hoist and mount out the organism with deciding jaw 2, avoid the workman to need demolish a large amount of bolts of deciding jaw 2 upper and lower ends, save time length, improve work efficiency, and the setting of bearing step 11 can play the guiding orientation effect when deciding jaw 2, make decide jaw 2 by hoist and mount get into in organism 100 can fall into smoothly on bearing step 11 fast, realize quick location pre-installation, thereby make dismantling and the installation operation of deciding jaw 2 simple and convenient, improve and change work efficiency, realize deciding the quick replacement of jaw 2.

The bearing step 11 is followed decide jaw 1 length direction extension, the bearing step 11 upper surface is from deciding jaw 1 to deciding jaw 2 direction slope ascending inclined plane a111, decide jaw 2 lower extreme and be equipped with the butt and be in joint portion 22 on the bearing step 11, joint portion 22 follows decide jaw 2 length direction extension, joint portion 22 lower surface is from deciding jaw 1 to decide jaw 2 direction slope ascending inclined plane b221, inclined plane b221 with inclined plane a111 contact cooperation to with deciding jaw 1 lower extreme steady butt on bearing step 11, inclined plane a111 and inclined plane b221 all are from deciding jaw 1 to decide jaw 2 direction slope ascending setting, make bearing step 11 can interlock joint portion 22 when supporting deciding jaw 2, avoid deciding jaw 2 to break away from bearing step 11, prevent to decide jaw 2 and decide jaw 1 width direction left and right movement. The lower extreme of deciding jaw 2 is equipped with extension 23, extension 23 downwardly extending extremely is located support step 11 side is in order to right support step 11 shields, extension 23 and decide jaw 2 integrated into one piece, and the setting of extension 23 can keep off the material, avoids the little particle diameter material after being broken to fly gradually collision support step 11 and joint portion 22 when discharging from organism 100 lower part and leads to the two to damage and cause deciding jaw 2 installation unstable.

The tension bolt 6 comprises a screw 61, specifically, an anti-rotation head 62 with a square cross section is arranged at one end of the screw 61, a fixed groove 52 and a through hole 53 which are communicated are sequentially formed in the direction of the fixed jaw bed 1 from the fixed jaw plate 2 on the compression block 5, the cross section of the fixed groove 52 is square, the screw 61 sequentially penetrates through the fixed groove 52, the through hole 53 and the fixed jaw bed 1 to fix the compression block 5 in the compression groove 4, the anti-rotation head 62 is positioned in the fixed groove 52, the screw 61 penetrates out of one end of the fixed jaw bed 1 and is in a spiral connection with a nut (not shown), the fixed groove 52 and the anti-rotation head 62 are in square arrangement, the anti-rotation head 62 is limited by the fixed groove 52, rotation of the anti-rotation head 62 is avoided, the screw 61 is avoided, when an operator removes the nut, the screw 61 cannot rotate, the operation is convenient, the operator does not need to fix the screw with one hand, and then the nut is removed.

In the above embodiment, in order to avoid the screw 61 and the anti-rotation head 62 from being damaged due to the collision of the material with the screw 61 and the anti-rotation head 62 when the material enters the machine body 100, the width of the fixing groove 52 is larger than the width of the anti-rotation head 62, so that the anti-rotation head 62 is located in the fixing groove 52 and the side surface of the anti-rotation head 62 facing away from the jaw bed 1 is also located in the fixing groove 52, which is beneficial to protecting the anti-rotation head 62 and the screw 61, thereby ensuring the tightening effect of the tightening bolt 6. Through the fixed slot 52 length is greater than the setting of the length of preventing rotating head 62 for when fixed slot 52 restriction prevents rotating head 62 rotation, the operating workman of being convenient for uses the instrument or directly stretches into the clearance between fixed slot 51 and the preventing rotating head 62 by hand and solid centre gripping prevents rotating head 62 thereby pulls out screw rod 61, further improves the dismouting efficiency of tensioning bolt 6.

In order to enhance the pressing force of the pressing block 5, the upper surface of the pressing block 5 is an inclined surface c550 which is inclined upwards from the fixed jaw bed 1 to the fixed jaw plate 2, the lower surface of the pressing block 5 is an inclined surface e540 which is inclined downwards from the fixed jaw bed 1 to the fixed jaw plate 2, the lower surface of the pressing plate 3 is an inclined surface d310 which is in contact fit with the inclined surface c550, the upper end surface of the fixed jaw plate 2 is an inclined surface f240 which is in contact fit with the inclined surface e540, the inclined surface f240 and the inclined surface e540, the inclined surface d310 and the inclined surface c550 are respectively in contact with each other, the movement of the pressing block 5 in the pressing groove 4 is realized, and meanwhile, the inclined surfaces f240, the inclined surface e540, the inclined surface d310 and the inclined surface c550 are arranged to increase the stress area, and amplify the pressing force, so that the fixed pressing block is pressed against the fixed jaw plate 2 in the vertical direction at the same time by the tightening bolts 6, the upper end and the lower end of the fixed jaw plate 2 are stably fixed, and the stability is further enhanced, and the fixed jaw plate 2 is stably installed on the fixed jaw bed 1.

Working principle: lifting the fixed jaw plate 2 vertically into the machine body 100 by using lifting equipment, descending the fixed jaw plate 2 along the fixed jaw bed 1 until a clamping part 22 at the bottom of the fixed jaw plate 2 falls on a supporting step 11, abutting the inclined surface b221 on the inclined surface a111 at the moment to finish quick preassembly of the fixed jaw plate 2, aligning a limit groove 51 of a compression block 5 with a limit part 21 by an operator, placing the compression block 5 into the compression groove 4, respectively contacting an inclined surface f240 with an inclined surface e540 and an inclined surface d310 with an inclined surface c550, positioning the limit part 21 in the limit groove 51, penetrating a screw 61 through the compression block 5 and the fixed jaw bed 1, screwing a nut on the screw 61, tightening the compression block 5 by a tightening bolt 6 at the moment, tightening and fixing the compression block 5 on the fixed jaw bed 1, downwards compressing the fixed jaw plate 2, and stably installing the fixed jaw plate 2 on the fixed jaw bed 1 under the cooperation of the compression block 5 and the supporting step 11 and the cooperation of the limit groove 51 and the limit part 21; when the fixed jaw plate 2 is worn, the fixed jaw plate 2 can be lifted out of the machine body 100 only by dismantling the tightening bolts 6 and the compression blocks 5 which are positioned at the upper part of the machine body 100, so that a large number of bolts at the upper end and the lower end of the fixed jaw plate 2 are avoided, the time length is saved, the working efficiency is improved, and a new fixed jaw plate 2 is installed, so that the fixed jaw plate 2 is convenient to dismantle and install, the replacement working efficiency is improved, and the quick replacement of the fixed jaw plate 2 is realized.

Although embodiments of the present utility model have been disclosed in the foregoing description and illustrated in the drawings, it is not intended to be limited to the details and embodiments shown and described, but rather to be fully applicable to various fields of adaptation to the present utility model, and further modifications may be readily made by those skilled in the art without departing from the general concept defined by the claims and the equivalents thereof, and it is therefore apparent that the utility model is not limited to the specific details and illustrations shown and described herein, and that various changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the utility model.

Claims (7)

1. The jaw crusher fixed jaw plate capable of being replaced quickly is characterized by comprising a fixed jaw bed (1) and a fixed jaw plate (2), wherein the fixed jaw bed (1) is arranged in a machine body (100), and a bearing step (11) for supporting the bottom of the fixed jaw plate (2) is arranged at the lower end of the fixed jaw bed (1);

the upper end of the fixed jaw bed (1) is provided with a pressing plate (3) extending towards the fixed jaw plate (2), the lower surface of the pressing plate (3) and the upper end surface of the fixed jaw plate (2) form a pressing groove (4), and a pressing block (5) is slidably arranged in the pressing groove (4) and is fixed on the fixed jaw bed (1) by a tension bolt (6) so as to press and fix the fixed jaw plate (2);

limiting grooves (51) are formed in the lower surface of the compression block (5), the limiting grooves (51) extend in the width direction of the compression block (5) and penetrate through the lateral surfaces of the two sides of the compression block (5) in the width direction, limiting portions (21) are detachably arranged at corresponding positions on the top ends of the fixed jaw plates (2), and the limiting portions (21) are movably located in the limiting grooves (51).

2. The jaw crusher fixed jaw plate capable of being replaced quickly according to claim 1, wherein the bearing step (11) extends along the length direction of the fixed jaw bed (1), the upper surface of the bearing step (11) is an inclined surface a (111) inclined upwards from the fixed jaw bed (1) to the fixed jaw plate (2), the lower end of the fixed jaw plate (2) is provided with a clamping part (22) abutted to the bearing step (11), the clamping part (22) extends along the length direction of the fixed jaw plate (2), the lower surface of the clamping part (22) is an inclined surface b (221) inclined upwards from the fixed jaw bed (1) to the fixed jaw plate (2), and the inclined surface b (221) is in contact fit with the inclined surface a (111).

3. A jaw crusher fixed jaw which can be quickly replaced according to claim 2, characterized in that the lower end of the fixed jaw (2) is provided with an extension (23), said extension (23) extending down to the side of the holding step (11) for shielding the holding step (11).

4. The jaw crusher jaw fixing plate capable of being replaced quickly according to claim 1, wherein the tension bolt (6) comprises a screw rod (61), an anti-rotation head (62) with a square cross section is arranged at one end of the screw rod (61), a fixed groove (52) and a through hole (53) which are communicated are sequentially formed in the direction from the jaw fixing plate (2) to the jaw fixing bed (1) on the compression block (5), the cross section of the fixed groove (52) is square, the screw rod (61) sequentially penetrates through the fixed groove (52), the through hole (53) and the jaw fixing bed (1) to fix the compression block (5) in the compression groove (4), the anti-rotation head (62) is positioned in the fixed groove (52), and the screw rod (61) penetrates out of one end spiral connecting nut of the jaw fixing bed (1).

5. A quick exchangeable jaw crusher jaw plate according to claim 4, characterized in that the width of the fixing groove (52) is larger than the width of the anti-rotation head (62).

6. A quick exchangeable jaw crusher jaw plate according to claim 4, characterized in that the fixing groove (52) has a length which is greater than the length of the anti-rotation head (62).

7. The jaw crusher jaw fixing plate capable of being replaced quickly according to claim 1, wherein the upper surface of the pressing block (5) is an inclined surface c (550) inclined upwards from the jaw fixing bed (1) to the jaw fixing plate (2), the lower surface of the pressing block is an inclined surface e (540) inclined downwards from the jaw fixing bed (1) to the jaw fixing plate (2), the lower surface of the pressing plate (3) is an inclined surface d (310) in contact fit with the inclined surface c (550), and the upper end surface of the jaw fixing plate (2) is an inclined surface f (240) in contact fit with the inclined surface e (540).

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