CN211937326U - Movable jaw crusher - Google Patents

Abstract

The utility model discloses a broken machine of portable jaw, broken machine of hubei province includes that front frame, rear frame, crawler travel assembly, power drive assembly, the broken host computer of jaw, conveyer and lower extreme support the frame, and the lower extreme supports the frame and passes through the bolt fastening on crawler travel assembly, and the bottom demountable installation of rear frame is in lower extreme support frame, and frame fixed mounting is supported on crawler travel assembly through the lower extreme in the front, and the broken host computer of fixed mounting jaw is in the rear frame, and rear end fixed mounting in the rear frame has the feeding funnel, and this feeding funnel is located the back upper place of the broken host computer of jaw, the discharge gate of feeding funnel and the pan feeding mouth intercommunication of the broken host computer of jaw, the both ends lateral part fixed mounting of rear frame has hydraulic cylinder, and conveyer's one end is fixed in the discharge gate below of the broken. The utility model discloses can effectively avoid dismouting and transportation spoilage, save the transportation cost and promote the security of transporting the installation, broken processing operation under can adapting to adverse circumstances.

Description

Movable jaw crusher

Technical Field

The utility model belongs to the technical field of crushing mechanical equipment, especially, relate to a broken machine of portable jaw.

Background

The crushing and screening equipment is mainly divided into a fixed crusher and a movable crusher, is mainly used for the operation and processing of flowable stone materials such as highways, railways, hydroelectric engineering and the like, and can adopt various configuration forms by users according to the types, scales and different requirements of finished materials of processing raw materials. At present, no matter be fixed breaker or portable breaker in the market, in the processing operation process of building stones, all can bring a great deal of adverse effects for the construction unit in the aspect of engineering progress, construction cost, equipment management etc. the leading cause lies in: the investment construction cycle is long, the auxiliary assembly who drops into is many, equipment takes up an area of a large scale and is great, the equipment that lifts by crane of certain ability needs to carry, equipment transition difficulty, except that equipment that lifts by crane, still need many large-scale transportation equipment, equipment is deposited and also needs certain place, the routine maintenance cost is high, and inconvenient transition operation, after shifting, need install again, and installation and debugging cycle length is long, equipment dismouting and transportation spoilage are high, the routine maintenance cost is also high, the fixed difficult circumstances such as regulation of broken screening equipment structure, seriously influence the productivity and the efficiency of broken screening, be difficult to adapt to the processing operation under the adverse circumstances.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a broken machine of portable jaw, according to the utility model discloses a movable jaw is broken can effectively avoid dismouting and transportation spoilage, has saved the transportation cost and has promoted the security of transporting the installation, can adapt to broken processing operation under the adverse circumstances. In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to one aspect of the utility model, the movable jaw crusher is provided, the jaw crusher comprises a jaw crushing system and a traveling system, the traveling system is composed of a front frame, a power driving assembly, a crawler traveling assembly, a conveying device and a lower end supporting frame, the jaw crushing system is composed of a rear frame, a jaw crushing main machine, a feeding hopper and a lifting hydraulic cylinder, the lower end supporting frame is fixed on the crawler traveling assembly through bolts, the bottom end of the rear frame is detachably mounted on the lower end supporting frame through bolts, so that the bottom end of the rear frame is mounted on the crawler traveling assembly through the lower end supporting frame, the power driving assembly is mounted on the front frame, the front frame is fixedly mounted on the crawler traveling assembly through the lower end supporting frame, and the front frame and the rear frame are distributed on the same horizontal surface plane of the lower end supporting frame, the hydraulic lifting mechanism comprises a rear rack, a jaw breaking host, a feeding hopper, a lifting hydraulic cylinder, a conveying device and a power driving assembly, wherein the jaw breaking host is fixedly installed on the rear rack, the feeding hopper is fixedly installed at the rear end of the rear rack and is positioned at the rear upper part of the jaw breaking host, a discharging port of the feeding hopper is communicated with a feeding port of the jaw breaking host, the lifting hydraulic cylinder is fixedly installed at the side parts of the two ends of the rear rack, one end of the conveying device is fixed below the discharging port of the jaw breaking host, the other end of the conveying device obliquely extends to the outer side of the front end of a front rack from the lower part of the discharging port of the jaw breaking host.

In a further preferred mode of the above scheme, the lower end support frame is formed by welding, superposing and fixing the edge of the upper layer support frame and the edge of the lower layer support frame, a conveying channel is formed between the upper layer supporting frame and the lower layer supporting frame, the feeding end of the conveying device penetrates from the front end of the conveying channel between the upper layer supporting frame and the lower layer supporting frame to be close to the rear end, the upper layer supporting frame comprises an upper horizontal supporting beam consisting of two parallel H-shaped steel forms and a plurality of upper horizontal supporting beams fixed between the two upper horizontal supporting beams, the lower layer supporting frame comprises a lower horizontal supporting beam consisting of two parallel H-shaped steel types and a plurality of lower transverse supporting beams fixed between the two lower horizontal supporting beams, the upper horizontal supporting beam and the lower horizontal supporting beam are mutually overlapped and welded, a transfer passage for mounting the transfer device is formed between the upper and lower transverse support beams.

According to the scheme, the detachable limiting beam is arranged at the front end between the two lower horizontal supporting beams, and the feeding end of the conveying device gradually penetrates into the conveying channel from the upper surface of the limiting beam, so that the feeding end of the conveying device is stopped at a position 1 m-1.5 m away from the rear ends of the lower horizontal supporting beams.

In a further preferred embodiment of the above solution, the two lower horizontal support beams are provided with a conveying mounting seat on opposite inner sides thereof, and the conveying device is fixed on the lower horizontal support beams through the conveying mounting seats.

According to a further preferred embodiment of the above technical scheme, the supporting fixing heads are respectively arranged on the side parts of the rear ends of the front end of the rear frame, and the lifting hydraulic cylinder is respectively fixed on the side parts of the rear ends of the front end of the rear frame through the supporting fixing heads.

Preferably, the supporting and fixing head comprises a supporting seat, a supporting shell and an annular ring seat, a first U-shaped groove is formed in the surface of the supporting seat, an L-shaped step is formed in the top of the back of the supporting shell, a second U-shaped groove is formed in the back of the supporting shell below the L-shaped step, the annular ring seat is arranged on the fixing portion of the hydraulic cylinder, the fixing portion of the hydraulic cylinder penetrates through the annular ring seat to be welded and fixed, the front side of the annular ring seat is fixed in the second U-shaped groove, the front side of the annular ring seat is fixed in the first U-shaped groove, the supporting shell is slidably inserted into the first U-shaped groove from bottom to top, the bottom of the L-shaped step is in contact with the top of the first U-shaped groove, the top of the L-shaped step is flush with the top end surface of the supporting seat, and the fixing portion of the hydraulic cylinder is flush, The annular ring seat is fixed on the side parts of the rear two ends of the front end of the rear frame.

In a further preferable mode of the above-mentioned solution, two side edges of the upper surface of the front frame 1 and two side edges of the upper surface of the rear frame are respectively provided with a fence.

In a further preferable mode of the above-mentioned solution, first ladder stands are provided on the side walls on both sides of the front frame, a support link is provided on the rear side of the first ladder stand, the upper end of the first ladder stand is rotatably connected to the side walls on both sides of the front frame, and the rear side of the lower end of the first ladder stand is connected to the crawler belt traveling assembly through the support link.

In a further preferable mode of the above scheme, the two side walls of the rear frame are provided with second ladder stands, the rear side of each second ladder stand is provided with at least one connecting plate, the upper end of each second ladder stand is rotatably connected to the two side walls of the rear frame, and the rear side of the lower end of each second ladder stand is connected to the crawler belt walking assembly through the connecting plate.

To sum up, because the utility model adopts the above technical scheme, the utility model discloses following technological effect has:

(1) the utility model discloses a complete machine primary structure processes for the section bar, conveniently makes processing, installation, dismantlement, transportation and maintenance. Usable hydro-cylinder whole lift of rear end and front end separation, convenient transportation and field installation need not hoist and mount, through the detachable cooperation installation of crawler-type removal and jaw broken station, transport and transport the walking with the front frame through the track assembly, the applicable abominable road conditions and workplace are installed, broken operation, it is convenient not only to turn round, like this greatly reduced the cost of transportation when the transportation, saved a large amount of installation and debugging costs when getting into broken operation zone time.

(2) The utility model discloses a dismouting and transportation spoilage have been avoided to the breaker, have saved the cost of transportation and have promoted the security of transporting the installation. After the transition, the crusher needs to be installed again, so that the installation and debugging period can be shortened, the capacity and the efficiency of the crusher can be improved, and the crusher can adapt to crushing processing operation in severe environment.

Drawings

Fig. 1 is a schematic diagram of the general structure of a movable jaw crusher of the present invention;

fig. 2 is a schematic diagram of the overall structure of the mobile jaw crusher after separation;

fig. 3 is a schematic view of the mounting structure of the front frame, the rear frame and the lower end support frame of the present invention;

fig. 4 is a schematic structural view of the lower end support frame of the present invention;

fig. 5 is a schematic view of the mounting structure of the hydraulic cylinder of the present invention;

fig. 6 is a schematic structural view of the support fixing head of the present invention;

fig. 7 is a schematic structural view of the support housing of the present invention;

fig. 8 is a schematic view of the overall structure of the transfer device of the present invention;

fig. 9 is a cross-sectional view of the transfer device of the present invention;

fig. 10 is a schematic structural view of the conveying support frame of the present invention;

fig. 11 is an axial view of the conveying support frame of the present invention;

fig. 12 is a schematic structural view of the aligning idler assembly of the present invention;

fig. 13 is an axial view of the aligning idler assembly of the present invention

Figure 14 is a schematic structural view of the upper rotating idler assembly of the present invention;

figure 15 is a schematic structural view of the upper rotating idler assembly of the present invention;

fig. 16 is a schematic structural view of the first and second support connection plates of the present invention;

fig. 17 is a schematic view of the mounting structure of the L-shaped edge support plate of the present invention;

in the drawing, a front frame 1, a rear frame 2, a crawler belt walking assembly 3, a power driving assembly 4, a jaw crushing main machine 5, a conveying device 6, a lifting hydraulic cylinder 8, a feeding hopper 7, a lower end supporting frame 9, a first ladder stand 10, a supporting connecting frame 11, a second ladder stand 20, a connecting plate 21, a conveying channel 60, a conveying supporting frame 61, a conveying belt 62, a speed reducing motor 63, a driving roller 64, a driven roller 65, a tension adjusting device 66, a connecting seat 67 and a material protecting plate 68;

the device comprises a gantry-shaped brace 601, an upper rotating carrier roller assembly 602, a lower rotating carrier roller 603, a mud scraper 604, an aligning carrier roller assembly 605, a lower joist 605a, an upper adjusting joist 605b, an aligning carrier roller 605c, a deflection regulating roller 605d, a fixed support frame 605e, a first rotating shaft 605f, a carrier roller support g, an L-shaped support shaft 605h, an extension spring 605i and an L-shaped blocking block 605 j; carrier roller mounting support plate 6021, carrier roller connecting plate assembly 6022, L-shaped edge support plate 6023, left carrier roller 6024, intermediate carrier roller 6025, right carrier roller 6026, fixed support plate 60210, second rotating shaft 60211, limit piece 60212, carrier roller mounting bottom plate 60220, first support connecting plate 60221, second support connecting plate 60222, fixed connecting part 60223, clamping interface 60224, screw hole 60225, screw 60226, support plate 60227, guide roller 60231;

the device comprises an upper horizontal support beam 90, an upper horizontal support beam 90a, a lower horizontal support beam 91a, a limiting beam 91b, a conveying installation seat 91c, a supporting and fixing head 200, a supporting seat 201, a supporting shell 202, an annular ring seat 203, a first U-shaped groove 201a, a second U-shaped groove 202a and an L-shaped step 204.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and by referring to preferred embodiments. It should be understood, however, that the numerous specific details set forth in the specification are merely set forth to provide a thorough understanding of one or more aspects of the present invention, which may be practiced without these specific details.

As shown in fig. 1, 2 and 3, the movable jaw crusher provided by the present invention comprises a front frame 1, a rear frame 2, a track traveling assembly 3, a power driving assembly 4, a jaw crushing main machine 5, a conveying device 6 and a lower end support frame 9, wherein the jaw crusher comprises a jaw crushing system and a traveling system, the traveling system comprises the front frame 1, the power driving assembly 4, the track traveling assembly 3, the conveying device 6 and the lower end support frame 9, the jaw crushing system comprises the rear frame 2, the jaw crushing main machine 5, a feeding hopper 7 and a lifting hydraulic cylinder 8, the lower end support frame 9 is fixed on the track traveling assembly 3 through bolts, the bottom end of the rear frame 2 is detachably mounted on the lower end support frame 9, so that the bottom end of the rear frame 2 is mounted on the track traveling assembly 3 through the lower end support frame 9, the power driving assembly 4 is installed on the front frame 1, the front frame 1 is fixedly installed on the lower end supporting frame 9, so that the front frame 1 is fixedly installed on the crawler belt walking assembly 3 through the lower end supporting frame 9, the front frame 1 and the rear frame 2 are distributed on the same horizontal surface plane of the lower end supporting frame 9, the jaw crushing main machine 5 is fixedly installed on the rear frame 2, the feeding hopper 7 is fixedly installed at the rear end of the rear frame 2, the feeding hopper 7 is positioned above the rear part of the jaw crushing main machine 5, a discharging port of the feeding hopper 7 is communicated with a feeding port of the jaw crushing main machine 5, the bottom end of the feeding hopper 7 is fixed on the rear frame 2 through a supporting spring, and stone materials in the vibrating process of the feeding hopper 7 gradually fall into the jaw crushing main machine 5 to be crushed by the inertial vibration of the jaw crushing main machine 5 in the processing operation process, the feeding is convenient, and stone is continuously conveyed into the jaw crusher for crushing; the side parts of two ends of the rear frame 2 are fixedly provided with lifting hydraulic cylinders 8, the lifting hydraulic cylinders 8 extend downwards from the side parts of two ends of the rear frame 2 and are positioned at two sides of a lower end supporting frame 9, when the lifting hydraulic cylinders 8 are lifted, the lifting hydraulic cylinders are contacted with the ground so as to support the whole jaw breaking system, one end of the conveying device 6 is fixed below a discharge port of the jaw breaking main machine 5, the other end of the conveying device 6 extends upwards from the lower part of the discharge port of the jaw breaking main machine 5 to the outer side of the front end of the front frame 1, and the power driving assembly 4 is in transmission connection with the crawler traveling assembly 3. After the stone material is fed into the upper hopper 7, the stone material falls into the jaw crusher main body 5 from the upper hopper 7 to be crushed, the stone material crushed by the jaw crusher main body 5 falls onto the conveyer 6, and the conveyer 6 conveys the crushed stone material to the front end of the front frame 1. In the utility model, when the crushing operation is carried out, the crawler walking assembly 3, the lower end supporting frame 9, the front frame 1 and the power driving assembly 4 are assembled and molded into a crushing walking system, the rear frame 2, the jaw crushing main machine 5, the feeding hopper 7 and the lifting hydraulic cylinder 8 are assembled and molded into a jaw crushing system, the crushing walking system and the jaw crushing system are transported to the construction operation site, the crushing walking system is controlled to walk to the lower part of the rear frame 2 by adjusting the lifting height of the lifting hydraulic cylinder 8, so that the lower end supporting frame 9 is positioned under the rear frame 2 and can be mutually fitted and installed accurately, then the lifting hydraulic cylinder 8 is adjusted to slowly descend, the rear frame 2 is stably fitted and placed on the lower end supporting frame 9 and is connected and fixed through a bolt, the conveying device 6 is inserted from the front frame 1 and is inserted into a conveying channel 60 formed in the lower end supporting frame 9, then the conveying device 6 is fixed in the lower end support frame 9, and the crushing operation can be carried out after the debugging is finished; after the crushing operation is completed, a bolt connected between the rear rack 2 and the lower end supporting rack 9 is disassembled, the lifting hydraulic cylinder 8 is adjusted to slowly rise, the rear rack 2 is separated from the lower end supporting rack 9 (the jaw breaking system is separated from the traveling system), the crushing traveling system is operated and controlled to move and be far away from the jaw breaking system, so that the jaw breaking system can be transported by a transport vehicle, the lifting equipment is not needed to hoist and transfer the jaw breaking system to the transport vehicle, the dismounting and transportation damage rate is avoided, the transportation cost is saved, and the transportation and installation safety is improved. After the transition, need install again, can reduce installation and debugging cycle length, can promote broken sieve's productivity and efficiency, can adapt to broken processing operation under the adverse circumstances.

In the present invention, referring to fig. 2, 3 and 4, the lower supporting frame 9 is formed by welding and overlapping the edge of the upper supporting frame and the edge of the lower supporting frame, a conveying passage 60 is formed between the upper supporting frame and the lower supporting frame, the feeding end of the conveying device 6 penetrates from the front end of the conveying passage 60 between the upper supporting frame and the lower supporting frame to the rear end, the upper supporting frame includes an upper horizontal supporting beam 90 composed of two parallel H-shaped steel forms and a plurality of upper transverse supporting beams 90a fixed between the two upper horizontal supporting beams 90, so that the two upper horizontal supporting beams 90 form a horizontal longitudinal supporting beam and then form a direction frame supporting frame with the upper horizontal supporting beam 90a, the lower supporting frame includes a lower horizontal supporting beam 91 composed of two parallel H-shaped steel forms and a plurality of lower transverse supporting beams 91a fixed between the two lower horizontal supporting beams 91, two lower horizontal support beams 91 form horizontal and longitudinal support beams and then form a direction frame support frame with the lower transverse support beam 91a, the upper horizontal support beam 90 and the lower horizontal support beam 91 are mutually overlapped and welded, and a conveying channel 60 for installing the conveying device 6 is formed between the upper transverse support beam 90a and the lower transverse support beam 91 a. A detachable limit beam 91b is arranged at the front end between the two lower horizontal support beams 91, the feeding end of the conveying device 6 gradually penetrates into the conveying channel 60 from the upper surface of the limit beam 91b, so that the feeding end of the conveying device 6 is stopped at a position 1 m-1.5 m away from the rear end of the lower horizontal support beam 91, when the conveying device 6 is loaded from the front end of the conveying channel 60, the limit beam 91b is firstly detached from the lower horizontal support beam 91 to avoid blocking and mounting the conveying device 6 when the conveying device 6 is put into the conveying channel 60 from the front end of the front frame 1, conveying installation seats 91c are arranged at the opposite inner sides of the two lower horizontal support beams 91, the conveying device 6 is fixed on the lower horizontal support beam 91a through the conveying installation seats 91c, when the conveying device 6 is put into the conveying channel 60 formed between the upper horizontal support beam 90a and the lower horizontal support beam 91a, the conveying device 6 passes below a discharge port of the jaw crushing main machine 5 and extends to the rear end of the lower end supporting frame 9 (lower horizontal supporting beam 91) by a distance of 1 m-1.5 m, namely the distance between the rear end of the conveying device 6 and the rear end of the lower horizontal supporting beam 91 is 1 m-1.5 m, so that the broken stone materials falling from the jaw crushing main machine 5 are reduced from being scattered, the broken stone materials fall down on the conveying device 6 and are immediately conveyed to the front end side of the front frame 1, and the stone materials falling and accumulated in the conveying device 6 are more and touch the upper horizontal supporting beam 90a in the conveying process, so that the stone materials in the conveying device 6 are conveyed after being leveled.

In the present invention, with reference to fig. 2, fig. 3, fig. 5, fig. 6 and fig. 7, the supporting fixing heads 200 are respectively disposed at the front end and the rear end of the rear frame 2, and the hydraulic lift cylinder 8 is respectively fixed at the front end and the rear end of the rear frame 2 by the supporting fixing heads 200; the supporting and fixing head 200 comprises a supporting seat 201, a supporting shell 202 and an annular ring seat 203, wherein a first U-shaped groove 201a is formed in the surface of the supporting seat 201, an L-shaped step 204 is formed in the top of the back of the supporting shell 202, a second U-shaped groove 202a is formed in the back of the supporting shell 202 below the L-shaped step 204, the annular ring seat 203 is arranged on a fixing portion of the hydraulic cylinder 8, the fixing portion of the hydraulic cylinder 8 penetrates through the annular ring seat 203 to be welded and fixed, the front side of the annular ring seat 203 is fixed in the second U-shaped groove 202a, the front side of the annular ring seat 203 is fixed in the first U-shaped groove 201a, the supporting shell 202 is inserted into the first U-shaped groove 201a in a sliding mode from bottom to top, the bottom of the L-shaped step 204 is in contact with the top of the first U-shaped groove 201a, and the top of the L-shaped step 204 is flush, the fixed part of hydraulic cylinder 8 passes through supporting seat 201, support housing 202, annular ring seat 203 and fixes both ends lateral part behind the front end of rear frame 2, thereby makes the fixed part of hydraulic cylinder 8 inserts back in the annular ring seat 203, and its top is inconsistent with the top in the second U-shaped groove 202a, and rethread support housing 202 embedding is fixed in supporting seat 201, has reduced the holding power between hydraulic cylinder 8's fixed part lateral part and the annular ring seat 203, and is more convenient and fast through above-mentioned fixed mounting moreover, and it is convenient to maintain.

In the present invention, with reference to fig. 1, 2 and 3, two side edges of the upper surface of the front frame 1 and two side edges of the upper surface of the rear frame 2 are respectively provided with a fence 12, so as to facilitate the operators to walk on the front frame 1 and the rear frame 2; the crawler type crawling ladder comprises a front rack 1, a crawler type crawling ladder 10, a crawler type crawling ladder assembly 3 and a crawler type crawling ladder system, and is characterized in that first crawling ladders 10 are arranged on side walls on two sides of the front rack 1, a supporting connecting frame 11 is arranged on the rear side of each first crawling ladder 10, the upper end of each first crawling ladder 10 is rotatably connected to the side walls on the two sides of the front rack 1, a lifting hook is arranged at the upper end of each first crawling ladder 10, the upper end of each first crawling ladder 10 is rotatably installed on the side wall of the front rack 1 through the lifting hook so as to rotate up and down and be detached, the first crawling ladder 10 is folded up during upward rotation so as to be convenient to transport; the crawler type crawler belt walking assembly is characterized in that second ladder stands 20 are arranged on the side walls of two sides of the rear frame 2, at least one connecting plate 21 is arranged on the rear side of each second ladder stand 20, the upper ends of the second ladder stands 20 are rotatably connected to the side portions of two sides of the rear frame 2, the rear side of the lower ends of the second ladder stands 20 is connected to the crawler belt walking assembly 3 through the connecting plates 21, and the second ladder stands 20 are the same in structure as the first ladder stands 10 and convenient to install and transport.

In the present invention, as shown in fig. 8, 9, 10 and 11, the conveying device 6 includes a conveying support frame 61, a transmission belt 62, a speed reducing motor 63, a driving roller 64 rotatably connected to the front end of the conveying support frame 61, a driven roller 65 rotatably connected to the rear end of the conveying support frame 61, the transmission belt 62 is wound on the upper and lower surfaces of the conveying support frame 61 along the space between the driving roller 64 and the driven roller 65, the speed reducing motor 63 is disposed on the front end side portion of the conveying support frame 61, the output shaft of the speed reducing motor 63 is drivingly connected to the driving roller 64, a tension adjusting device 66 for adjusting the tension of the transmission belt 62 is disposed on the side portion of the conveying support frame 61 and on the rear side of the speed reducing motor 63, the speed reducing motor 63 is slidably disposed on both sides of the front end of the conveying support frame 61, and is pushed by the tension adjusting device 66 to slide the speed reducing motor 63 on both sides, the driving gear motor 63 is driven to move towards the front end or the rear end of the conveying support frame 61, so that the driving roller 64 is driven to drive the driven roller 65 to move towards the front end or the rear end of the conveying support frame 61, the purpose of tensioning the transmission belt 62 is achieved, and the transmission belt has a good stabilizing effect in the process of conveying stone and sand. A connecting seat 67 is arranged at the edge of the bottom surface of the conveying support frame 61, and the conveying support frame 61 is fixedly connected with the conveying installation seat 91c through the connecting seat 67 by bolts, so that the conveying support frame 61 is fixed in the lower end support frame 9; and a material protection plate 68 which obliquely extends outwards and upwards is arranged around the rear end edge of the conveying support frame 61, so that the amount of sand and stone materials stored in the conveying belt 62 is increased. The two sides of the upper edge of the conveying support frame 61 are fixedly connected through a gantry-shaped brace 601, and the height of the gantry-shaped brace 601 is flush with the lower edge of the material protection plate 68 or lower than the upper edge of the material protection plate 68; when the sand falls on the transmission belt 62, the sand material higher than the material protecting plate 68 is leveled through the gantry-shaped brace 601, so as to level the sand material, and the sand material is not easy to scatter in the transmission process, an upper rotating roller assembly 602 which is formed by transversely folding a plurality of sections into arc arrangement is transversely arranged between two sides of the upper edge in the transmission support frame 61, so that the transmission belt 62 is arranged along the inside of the transmission support frame 61 in a groove shape, the crushed stone material broken by the jaw falls into the transmission belt 62 in the groove shape to be transmitted, not only can more crushed stone materials be transmitted, but also the sand broken by the jaw can be reduced from randomly scattering around the transmission belt 62, a lower rotating roller 603 is transversely fixed below the two sides of the lower edge in the transmission support frame 61, and the lower rotating roller 603 is transversely arranged below the transmission support frame 61 so that the transmission belt 62 moves on the lower rotating roller 603, the driving belt 62 is wound on the upper and lower surfaces of the conveying support frame 61 along the positions among the driving roller 63, the lower rotating idler 603, the driven roller 64 and the upper rotating idler assembly 602, and the speed reducing motor 63 and the tension adjusting device 66 are fixed on the side of the front end of the conveying support frame 61. A mud scraper 604 is transversely arranged at the front end of the conveying support frame 61 and behind and below the driving roller, the upper surface of the mud scraper 604 is in contact with the lower surface of the driving belt 62, the mud scraper 604 spans the lower surface of the driving belt 62, the mud scraper 604 is in close contact with the lower surface of the driving belt 62, the mud scraper 604 excessively arches upwards and also prevents the driving belt from becoming loose in the conveying process, when the driving belt 62 is horizontally arranged, the mud scraper 604 and the lower rotating carrier roller 603 are at the same height or higher than the lower rotating carrier roller 603, the mud scraper 604 and the lower rotating carrier roller 603 simultaneously support the driving belt 62, and mud adhered to the surface of the driving belt 62 is scraped away through the mud scraper 604; the crushed stone materials of the jaw crusher often contain soil or moisture and often adhere to the surface of the transmission belt 62, and when the crushed stone materials are transferred by the transmission belt 62 and then return to the rear end to run and rotate, the mud scraping plate 604 contacts with the surface of the transmission belt 62 to scrape away the adhered soil or sand powder.

In the present invention, as shown in fig. 12 and 13, at least one set of aligning roller assembly 605 is transversely disposed below the conveying support frame 61, the aligning roller assemblies 605 are disposed between the adjacent lower rotating rollers 603 at intervals, when the length of the belt exceeds 15m, a set of aligning roller assembly 605 is additionally disposed at intervals of 8-12 m, the aligning roller assembly 605 includes a lower joist 605a, an upper adjusting joist 605b, an aligning roller 605c and a deflection regulating roller 605d, two ends of the lower joist 605a are fixed below the conveying support frame 61 by the vertically disposed fixing support frames 605e, a first rotation shaft 605f is disposed at the center of the lower joist 605a, the lower end of the first rotation shaft 605f is fixed on the lower joist 605a, the upper end of the first rotation shaft 605f is connected with the center of the upper adjusting joist 605b, so that the upper adjusting joist 605b rotates the lower joist 605e disposed between the two fixing support frames e through the first rotation shaft 605f a, two ends of the aligning idler 605c are horizontally connected and fixed at two ends of the upper adjusting joist 605b through an idler support 605g which is vertically arranged, when the transmission belt 62 generates deviation in the forward transmission process, the first rotating shaft 605f drives the upper adjusting joist 108b to also deviate and rotate, the deviation adjusting roller 605d is arranged in front of two ends of the aligning idler 605c through an L-shaped support shaft 605h, the fixed end of the L-shaped support shaft 605h is hinged with the fixed support frame 605e, the deviation adjusting roller 605d is sleeved on the outer wall of the free end of the L-shaped support shaft 605h, the L-shaped support shaft 605h and the deviation adjusting roller 605d are arranged at the front side position of the lower joist 605a, the free end of the L-shaped support shaft 605h is provided with a stretching spring 605i, the stretching spring 605i is connected between the fixed support frame 605e and the free end of the L-shaped support shaft 605h, an L-shaped stop block 605j is arranged at the rear side of the lower joist 605a and at both sides of the first rotating shaft 605f, the fixed end of the L-shaped stop block 605j is slidably arranged on the lower joist 108a, one end of the L-shaped stop block 605j extends upwards to be at least level with the height of the aligning idler 605c, when the transmission belt 62 is pressed on the surface of the aligning idler assembly 605, the edge of the transmission belt 62 is pressed on the deviation adjusting roller 605d, if the transmission belt 62 deviates during transmission operation, the L-shaped support shaft 605h drives the deviation adjusting roller 605d to horizontally swing back and forth at the outer side of the upper adjusting joist 605b, and simultaneously the upper adjusting joist 605b is driven to rotate by a deviation angle by taking the aligning idler 605c as the center, during rotation, the aligning idler 605c on the upper adjusting joist 605b will touch the L-shaped stop block 605j to prevent the aligning idler 605c from further deviation rotation, at the moment, the edge of the transmission belt 62 applies a thrust on the deflection adjusting roller 605d, at the moment, the L-shaped supporting shaft 605h horizontally rotates by a deflection angle by taking the fixed supporting frame 605e as a center, and the L-shaped supporting shaft 605h is gradually rotated to the original position under the action of the elastic force of the extension spring 605i, so that the aligning supporting roller 108c drives the transmission belt 62 to automatically return to the original position after deflecting, and the automatic deflection correction of the deflection is realized, the transmission belt 62 stretches across and is arranged below the transmission supporting frame 61 from one end close to the driving roller 64 or the driven roller 65 to adjust the transmission belt 62, the deflection of the transmission belt 62 is prevented, and the running reliability of the transmission belt is greatly improved; when the aligning idler assembly 605 is installed, a fixed support frame 605e is vertically welded and installed at two ends of an L-shaped support shaft 605h, a deflection adjusting roller 605d is respectively installed on the fixed support frame 605e through the L-shaped support shaft 605h on the front side of a lower joist 605a, the deflection adjusting roller 605d is perpendicular to the lower joist 605a and the transmission belt 62, an L-shaped block 605j is horizontally and vertically arranged on the lower joist 605a in a sliding manner on the rear side of the lower joist 605a in a sliding manner, the free end of the L-shaped block 605j extends upwards to the rear side of the aligning idler 605c, the degree of freedom of the L-shaped block 605j is aligned with the height of the aligning idler 605c, then the aligning idler 605c is arranged on the rotating shaft f through an upper adjusting joist 605b, and the idler 605c, the upper adjusting joist 605b and the lower joist 605a are kept parallel from top to bottom and are arranged on the same vertical plane, then the extension spring 605i is installed between the top end of the fixed support frame 605e and the free end of the L-shaped support shaft 605 h; the L-shaped stops 605j on either side of the L-shaped support shaft 605h are adjusted to fit the L-shaped stops 605j within a desired, prescribed distance from the L-shaped support shaft 605h, thereby defining the position of the upper adjustment joist 605b for rotational offset.

In the utility model, the upper rotating idler assembly 602 comprises an idler mounting support plate 6021, an idler connection plate assembly 6022, an L-shaped edge support plate 6023, and a left idler 6024, an intermediate idler 6025 and a right idler 6026 respectively mounted on the idler mounting support plate 6021, the left idler 6024, the intermediate idler 6025 and the right idler 6026 form an arc-shaped concave section on the idler mounting support plate 6021, one end of the left idler 6024, one end of the right idler 6026 and two ends of the intermediate idler 6025 are respectively detachably connected to the idler mounting support plate 6021 through the idler connection plate assembly 6022, the L-shaped edge support plates 6023 are arranged at two ends of the idler mounting support plate 6021, the other end of the left idler 6024 and the other end of the right idler 6026 are respectively detachably connected to two ends of the idler mounting support plate 6021 through the L-shaped edge support plate 6023, so that the driving belt 62 is tiled and arranged in the arc-shaped concave section, after the upper rotating carrier roller assembly 602 is mounted on the conveying support frame 61, the transmission belt 62 is mounted in the arc-shaped concave section to form a groove-shaped conveying space, and when the transmission belt 62 runs, the transmission belt 62, the left carrier roller 6024, the middle carrier roller 6025 and the right carrier roller 6026 can flexibly rotate under a small friction force, so that the off-tracking transmission belt 62 can be flexibly adjusted in time; the end part of the short side of the L-shaped edge supporting plate 6023 is provided with a guide roller 60231, the guide roller 60231 extrudes the edge of the transmission belt 62, the transmission belt 62 is prevented from deviating in the transmission process, the abrasion between the edge of the transmission belt 62 and a transmission frame is reduced, the transmission is convenient, the stability of the transmission belt is ensured, the used carrier roller can be made of smooth nylon materials, and when the transmission belt 62 deviates to one side in the operation process, the deviation of the transmission belt 62 is limited.

In the present invention, as shown in fig. 1, 2, 3 and 4, the idler connecting plate assembly 6022 includes an idler mounting bottom plate 60220, a first support connecting plate 60221 and a second support connecting plate 60222 fixed at one end of the idler mounting bottom plate 60220, the first support connecting plate 60221 is vertically fixed to one end surface of the idler mounting bottom plate 60220, a fixing connecting portion 60223 is provided along a side wall of a top end of the second support connecting plate 60222, a top end of the second support connecting plate 60222 is fixedly connected to the first support connecting plate 60221 by the fixing connecting portion 60223, a lower end of the second support connecting plate 60222 is inclined downward and in a direction of the other end of the idler mounting bottom plate 60220, a lower end of the second support connecting plate 60222 is obliquely fixed to the idler mounting bottom plate 60220, so that the first support connecting plate 60221 is vertically fixed to the idler mounting bottom plate 60220, the second support connecting plate 202 is obliquely fixed between the idler mounting bottom plate 60220 and the fixing connecting portion 60223, the lower end of the second support connecting plate 60222, which is far away from the side of the first support connecting plate 60221, is fixed on the idler mounting bottom plate 60220, the top end of the second support connecting plate 60222 is excessively connected with the top end of the first support connecting plate 60221 through a fixed connecting part 60223, and the excessive included angle between the top end of the second support connecting plate 60222 and the top end of the first support connecting plate 60221 is not more than 35 degrees; the two ends of the middle carrier roller 6025 are respectively fixed on the carrier roller mounting bottom plate 60220 through a first support connecting plate 60221, one end of the left carrier roller 6024 and one end of the right carrier roller 6026 are respectively detachably connected with a second support connecting plate 60222 and fixed on the carrier roller mounting bottom plate 60220, the lower surface of the long side of the L-shaped edge support plate 6023 is obliquely fixed on the carrier roller mounting support plate 6021 through the carrier roller mounting bottom plate 60220, the end part of the long side of the L-shaped edge support plate 6023 is connected with the bottom end of the second support connecting plate 60222, and the other end of the left carrier roller 6024 and the other end of the right carrier roller 6026 are respectively detachably connected with the end part of the short side of the L-; in the present invention, the top end of the first support connecting plate 60221, the top end of the second support connecting plate 60222 and the fixed connecting part 60223 are provided with the clamp interfaces 60224 which are symmetrically communicated with each other, the screw hole 60225 is arranged in the fixed connecting part 60223 and along the width direction of the idler mounting bottom plate 60220, the horizontal height of the lowest position of the clamp interface 60224 is located below the screw hole 60225, the two end fixed support shafts of the middle idler 6025 are clamped and fixed on the first support connecting plate 60221 through the clamp interfaces 60224, and the one end fixed support shaft of the left idler 6024 and the one end fixed support shaft of the right idler 6026 are respectively clamped and fixed on the second support connecting plate 60222 through the clamp interfaces 60224; a bolt 60226 is arranged in the screw hole 60225, and the bolt 60226 is inserted into the screw hole 60225 to clamp one end of the left carrier roller 6024, one end of the right carrier roller 6026 and two ends of the middle carrier roller 6025 in the clamping ports 60224 on the corresponding side respectively, in the utility model, two ends of the middle carrier roller 6025 are fixed on the carrier roller mounting support plate 6021 through the carrier roller connecting plate assembly 6022 in mirror symmetry, more specifically, two ends of the central support shaft in the middle carrier roller 6025 are arranged in the clamping ports 60224 on the first support connecting plate 60221, so that when the transmission belt is driven on the middle carrier roller 6025, two ends of the middle carrier roller 6025 are supported and fixed through the clamping ports 6024 on the first support connecting plate 60221; an L-shaped edge support plate 6023 is obliquely arranged at the left end and the right end of the carrier roller mounting support plate 6021 respectively, at the left end (at the left end of the middle carrier roller 6025) of the carrier roller mounting support plate 6021, a center support shaft at one end in the left carrier roller 6024 is inserted into a shaft hole arranged on the surface of the short side of the L-shaped edge support plate 6023 from the surface of the short side of the L-shaped edge support plate 6023 or clamped on a notch (not shown) of the short side of the L-shaped edge support plate 6023, and a center support shaft at the other end in the left carrier roller 6024 is arranged on a second support connecting plate 60222 arranged at the other end of the carrier roller mounting support plate 6021 and is supported and fixed through a clamping; on the right side of the idler mounting support plate 6021 (at the right end of the intermediate idler 6025), the center support shaft at one end in the right idler 6026 is inserted from the surface of the short side of the corresponding L-shaped edge support plate 6023 into the notch (not shown) of the short side of the L-shaped edge support plate 6023 provided at the surface thereof, the center support shaft at the other end in the right idler 6026 is placed on the second support connecting plate 60222 provided at the other end of the idler mounting support plate 6021 and is supported and fixed by the snap-in port 60224 on the second support connecting plate 60222 of the side, the screw 60226 is inserted into the screw hole 60225 in the fixing connecting part 60223 after the left idler 6024, the intermediate idler 6025 and the right idler 6026 are respectively placed on the L-shaped edge support plate 6023 on the corresponding side and the snap-in port 204 is formed between the top end of the first support connecting plate 60221, the top end of the second support connecting plate 60222 and the fixing connecting part 602, the screw rod 60226 is penetrated from one end of the fixed connecting part 60223 to the other end, the screw rod 60226 can be screwed and fixed on the side walls of the two ends of the fixed connecting part 60223 through nuts at the two ends of the screw rod 60226, at this time, the central supporting shaft of the left idler 6024, the central supporting shaft of the middle idler 6025 and the central supporting shaft of the right idler 6026 are respectively positioned under the screw hole 60225 in the excessive clamping interfaces 60224 formed on the first supporting connecting plate 60221, the second supporting connecting plate 60222 and the fixed connecting part 60223, and the central supporting shaft of the idler is blocked and limited by the screw rod 60226, so as to prevent the idler from falling off from the first supporting connecting plate 60221 and the second supporting connecting plate 60222, the left idler 6024, the middle idler 6025 and the right idler 6026 are clamped on the idler connecting plate assembly and the L-shaped edge supporting plate, and the upper rotating idler 602 is installed and formed to be difficult to fall off in the transportation process, even if the carrier roller falls off or is damaged, the installation is more convenient; during assembly, the carrier roller mounting support plate 6021 on the upper rotating carrier roller assembly 602 is fixed on the conveying support frame 61, the carrier roller connecting plate assembly 6022 and the L-shaped edge support plate 6023 are assembled on the carrier roller mounting support plate 6021, and then the left carrier roller 6024, the middle carrier roller 6025 and the right carrier roller 6026 are mounted on the carrier roller connecting plate assembly 6022 to form the upper rotating carrier roller assembly 602 and are mounted on the conveying support frame 61 through the carrier roller mounting support plate 6021; a support plate 60227 for supporting the lower surface of the long side of the L-shaped edge support plate 6023 is vertically arranged on the idler mounting bottom plate 60220, the support plate 60227 is positioned between the middle part and the lower end part of the lower surface of the long side of the L-shaped edge support plate 3, and the support plate 60227 is positioned on the same vertical plane with the axis of the corresponding side left idler 6024 and the axis of the right idler 6026, so that the support strength between the L-shaped edge support plate 6023 and the idler mounting bottom plate 60220 is enhanced, and the mounting stability of the middle idler 6025 and the right idler 6026 is improved.

As another embodiment of the present invention, referring to fig. 6, a fixed support plate 60210 is horizontally disposed below the idler installation support plate 6021, a second rotation shaft 60211 is disposed in the center of the fixed support plate 60210, the bottom end of the idler installation support plate 6021 is fixed to the fixed support plate 60210 by a second rotation shaft 60211, and the second rotation shaft 60211 is used for controlling the swing amplitude of the idler installation support plate 6021; when the transmission belt 62 slantly deviates in the running process, the transmission belt 62 contacts the guide roller 60231, the guide roller 60231 is subjected to the lateral force of the deviation of the transmission belt 62, so that two sides of the carrier roller on the carrier roller mounting support plate 6021 are stressed unevenly, the carrier roller mounting support plate 6021 deflects towards the front of the deviation of the transmission belt 62 by taking the rotating shaft 60211 as the center, after the deflection, the carrier roller mounting support plate 6021 has a rotating acting force under the action of the rotating shaft 60211, the carrier roller rotates and has a friction force generated by relative speed deviation to the running speed of the transmission belt 62, so that the transmission belt 62 is reset, the carrier roller is also reset to a position vertical to the transmission belt 62 along with the reset of the transmission belt 62, the transmission belt 62 runs in a non-deviation state, the phenomenon of rotation inflexibility or jamming in the running process of the transmission belt 62 is avoided, the limiting pieces 60212 extend outwards from two ends of the carrier roller mounting support plate 6021, the stopper 60212 is a spring or a rigid rod for preventing the idler mounting support plate 6021 from rotating at an excessively large angle, and when the spring is used, the idler mounting support plate 6021 is pulled back or pulled back to the original position under the elastic force of the spring.

The utility model discloses in, combine fig. 1 to fig. 14, further illustrate the utility model discloses a broken installation of machine of portable jaw, it goes on according to following step:

step 1: firstly, assembling and forming a crawler walking assembly 3, a lower end supporting frame 9, a front frame 1 and a power driving assembly 4 into a walking system, assembling and forming a rear frame 2, a jaw breaking host 5, a feeding hopper 7 and a lifting hydraulic cylinder 8 into a jaw breaking system, transferring the walking system and the jaw breaking system to a construction operation site, firstly, mounting and fixing the walking system, then, adjusting the lifting height of the lifting hydraulic cylinder 8, and then, controlling the breaking walking system to slowly walk to the lower part of the rear frame 2, so that the lower end supporting frame 9 is positioned under the rear frame 2 and can be mutually matched and mounted; thereby avoiding the occurrence of dislocation when the rear frame 2 is stably arranged on the lower support frame 9;

step 2: adjusting a lifting hydraulic cylinder 8 to slowly descend, stably and fittingly placing a rear frame 2 on a lower end support frame 9 and then connecting and fixing the rear frame 2 through bolts, thereby avoiding the adoption of heavy equipment to hoist and mount a crushing system to the crushing system, inserting a conveying device 6 from a front frame 1 into a conveying channel 60 formed in the lower end support frame 9, fixing the conveying device 6 in the lower end support frame 9, adjusting a tensioning adjusting device 66 arranged on the conveying device 6 and pushing a speed reducing motor 63 to slide on two sides of the front end of a conveying support frame 61, thereby pushing a movable driving roller 64 on the conveying device 6 to drive a driven roller 65 to move towards the front end or the rear end of the conveying support frame 61, thereby achieving the purpose of adjusting the tensioning of a conveying belt 62, and then installing and adjusting a self-aligning carrier roller assembly 605 to enable the tightness of the conveying belt 62 to be properly arranged on the conveying support frame 61, after debugging is finished, crushing operation can be carried out;

and step 3: after the crushing operation is finished, a bolt connected between the rear rack 2 and the lower end support rack 9 is disassembled, the lifting hydraulic cylinder 8 is adjusted to slowly rise, the jaw crushing system is separated from the traveling system, and the traveling system is operated and controlled to move to be far away from the jaw crushing system. The jaw breaking system can be transported by the transfer trolley through a simple separation method, and the lifting equipment is not required to lift and transfer the jaw breaking system to the transfer trolley, so that the damage rate of disassembly, assembly and transportation is avoided, the transportation cost is saved, and the safety of transportation and installation is improved.

The utility model discloses in, the installation of after- frame 2 and 6 orders of conveyer can exchange, earlier with conveyer 6 in the inserting of frame 1 in the past and through the transfer passage 60 that the lower extreme formed in supporting the frame 9, install the left and right sides relatively stable of conveyer 6 behind the transfer passage 60 in lower extreme supporting the frame 9, control broken traveling system slowly and walk to the below of after-frame 2 again, adjust hydraulic cylinder 8 and make its slow decline, it is fixed to connect through the bolt after the frame 9 is supported to the lower extreme to firm the agreeing with of after-frame 2, the debugging finishes the rear and can carries out broken operation.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (9)

1. The utility model provides a movable jaw crusher which characterized in that: the jaw crusher comprises a front frame, a rear frame, a crawler belt walking assembly, a power driving assembly, a jaw crushing main machine, a conveying device, a lower end supporting frame, a feeding hopper and a lifting hydraulic cylinder, wherein the lower end supporting frame is fixed on the crawler belt walking assembly through bolts, the bottom end of the rear frame is detachably mounted on the lower end supporting frame through bolts, so that the bottom end of the rear frame is mounted on the crawler belt walking assembly through the lower end supporting frame, the power driving assembly is mounted on the front frame, the front frame is fixedly mounted on the crawler belt walking assembly through the lower end supporting frame, the front frame and the rear frame are distributed on the same horizontal surface plane of the lower end supporting frame, the jaw crushing main machine is fixedly mounted on the rear frame, the feeding hopper is fixedly mounted on the rear frame, and the feeding hopper is positioned above the rear part of the jaw crushing main machine, the discharging port of the feeding hopper is communicated with the feeding port of the jaw breaking main machine, the lifting hydraulic cylinder is fixedly mounted on the lateral parts of the two ends of the rear frame, one end of the conveying device is fixed below the discharging port of the jaw breaking main machine, the other end of the conveying device extends upwards from the lower part of the discharging port of the jaw breaking main machine to the outer side of the front end of the front frame in an inclined mode, and the power driving assembly is in transmission connection with the crawler traveling assembly.

2. The mobile jaw crusher of claim 1, wherein: the lower end supporting frame is formed by welding, superposing and fixing the edge of the upper layer supporting frame and the edge of the lower layer supporting frame, a conveying channel is formed between the upper layer supporting frame and the lower layer supporting frame, the feeding end of the conveying device penetrates from the front end of the conveying channel between the upper layer supporting frame and the lower layer supporting frame to be close to the rear end, the upper layer supporting frame comprises an upper horizontal supporting beam consisting of two parallel H-shaped steel forms and a plurality of upper horizontal supporting beams fixed between the two upper horizontal supporting beams, the lower layer supporting frame comprises a lower horizontal supporting beam consisting of two parallel H-shaped steel types and a plurality of lower transverse supporting beams fixed between the two lower horizontal supporting beams, the upper horizontal supporting beam and the lower horizontal supporting beam are mutually overlapped and welded, a transfer passage for mounting the transfer device is formed between the upper and lower transverse support beams.

3. The mobile jaw crusher of claim 2, wherein: the front end between the two lower horizontal supporting beams is provided with a detachable limiting beam, and the feeding end of the conveying device gradually penetrates into the conveying channel from the upper surface of the limiting beam, so that the feeding end of the conveying device is stopped at a position 1 m-1.5 m away from the rear ends of the lower horizontal supporting beams.

4. A mobile jaw crusher as claimed in claim 2 or 3, characterised in that: and conveying installation seats are arranged on the opposite inner sides of the two lower horizontal supporting beams, and the conveying device is fixed on the lower horizontal supporting beams through the conveying installation seats.

5. The mobile jaw crusher of claim 4, wherein: and supporting fixing heads are respectively arranged on the side parts of the rear two ends of the front end of the rear rack, and the lifting hydraulic cylinder is respectively fixed on the side parts of the rear two ends of the front end of the rear rack through the supporting fixing heads.

6. The mobile jaw crusher of claim 5, wherein: the supporting and fixing head comprises a supporting seat, a supporting shell and an annular ring seat, a first U-shaped groove is formed on the surface of the supporting seat, the top of the back of the supporting shell is provided with an L-shaped step, the back of the supporting shell below the L-shaped step is provided with a second U-shaped groove, the fixed part of the lifting hydraulic cylinder is provided with an annular ring seat, the fixed part of the lifting hydraulic cylinder passes through the annular ring seat for welding and fixing, the front side of the annular ring seat is fixed in the second U-shaped groove, the front side of the annular ring seat is fixed in the first U-shaped groove, the support shell is inserted into the first U-shaped groove from bottom to top in a sliding manner, so that the bottom of the L-shaped step is contacted with the top of the first U-shaped groove, the top of the L-shaped step is flush with the top surface of the supporting seat, and the fixing part of the lifting hydraulic cylinder is fixed on the side parts of the rear two ends of the front end of the rear rack through the supporting seat, the supporting shell and the annular ring seat.

7. The mobile jaw crusher of claim 1, wherein: and fences are respectively arranged on the edges of two sides of the upper surface of the front frame and the edges of two sides of the upper surface of the rear frame.

8. The mobile jaw crusher of claim 1 or 7, wherein: the crawler type crawler belt walking assembly is characterized in that first crawling ladders are arranged on the side walls of the two sides of the front rack, a supporting connecting frame is arranged on the rear side of each first crawling ladder, the upper ends of the first crawling ladders are rotatably connected to the side walls of the two sides of the front rack, and the rear side of the lower ends of the first crawling ladders is connected to the crawler belt walking assembly through the supporting connecting frame.

9. A mobile jaw crusher as claimed in claim 1 or 5, characterised in that: the crawler belt walking assembly is characterized in that second crawling ladders are arranged on the side walls of the two sides of the rear rack, at least one connecting plate is arranged on the rear side of each second crawling ladder, the upper end of each second crawling ladder is rotatably connected to the side portions of the two sides of the rear rack, and the rear side of the lower end of each second crawling ladder is connected to the crawler belt walking assembly through the connecting plate.

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