阅读说明：本技术 一种液压锁紧式圆锥破碎机及锁紧方法 (Hydraulic locking type cone crusher and locking method ) 是由 张卫强 韩鹏飞 王洪强 闫文龙 于 2021-09-14 设计创作，主要内容包括：本发明公开了一种液压锁紧式圆锥破碎机,包括机身和进料斗,所述进料斗下端设有与动锥体配合的定锥体,所述进料斗和机身通过若干个锁紧油缸相连,所述锁紧油缸包括：缸筒,与机身固定连接；油缸活塞,密封滑动安装于缸筒内,且滑动方向垂直于定锥体和机身的连接面。本发明的技术方案通过锁紧油缸连接进料斗和机身,然后将定锥体设于进料斗下端,通过往锁紧油缸内注入高压油实现进料斗和机身的固定连接,除此之外,进料斗和机身不接触,从而避免了定锥体抖动引起磨损的问题,有效克服了现有液压锁紧式圆锥破碎机的缺点,而且锁紧油缸内的油缸活塞具有弹性,可承受定锥体抖动引起的振动冲击而不失去密封效果。(The invention discloses a hydraulic locking type cone crusher, which comprises a crusher body and a feed hopper, wherein the lower end of the feed hopper is provided with a fixed cone matched with a movable cone, the feed hopper is connected with the crusher body through a plurality of locking oil cylinders, and each locking oil cylinder comprises: the cylinder barrel is fixedly connected with the machine body; and the oil cylinder piston is hermetically and slidably arranged in the cylinder barrel, and the sliding direction of the oil cylinder piston is vertical to the connecting surface of the fixed cone and the machine body. According to the technical scheme, the locking oil cylinder is connected with the feeding hopper and the machine body, the fixed cone is arranged at the lower end of the feeding hopper, the feeding hopper is fixedly connected with the machine body by injecting high-pressure oil into the locking oil cylinder, in addition, the feeding hopper is not in contact with the machine body, so that the problem of abrasion caused by shaking of the fixed cone is solved, the defects of the existing hydraulic locking type cone crusher are effectively overcome, and an oil cylinder piston in the locking oil cylinder has elasticity and can bear vibration impact caused by shaking of the fixed cone without losing the sealing effect.)

1. The utility model provides a hydraulic pressure locking formula cone crusher, includes fuselage and feeder hopper, the feeder hopper lower extreme be equipped with move cone complex decide the cone, a serial communication port, feeder hopper and fuselage link to each other through a plurality of locking hydro-cylinder, the locking hydro-cylinder includes: the cylinder barrel is fixedly connected with the machine body; the oil cylinder piston is hermetically and slidably arranged in the cylinder barrel, and the sliding direction of the oil cylinder piston is vertical to the connecting surface of the fixed cone and the machine body; and one end of the connecting rod is connected with the oil cylinder piston, and the other end of the connecting rod is connected with the feed hopper.

2. A hydraulically locked cone crusher as claimed in claim 1, wherein said cylinder piston comprises: a wear-resistant cylinder, one end of which is sealed; the pressure bearing plate is abutted against the bottom of the wear-resistant cylinder; and a plurality of sealing rings are arranged and are tightly sleeved on the connecting rod, and the sealing rings can push the outer diameter of the wear-resistant cylinder to be enlarged and tightly attached to the inner wall of the cylinder barrel.

3. The hydraulic locking type cone crusher as claimed in claim 2, wherein the sealing ring comprises a sealing gasket and pressing plates clamped on two sides of the sealing gasket, the pressing plates are connected with the connecting rod in a screwing manner, the connecting rod is rotated to enable the two pressing plates to approach each other to squeeze the sealing gasket, and then the outer diameter of the sealing gasket is enlarged to push the outer diameter of the wear-resistant cylinder to be enlarged and tightly attached to the inner wall of the cylinder barrel.

4. A hydraulically locked cone crusher as claimed in claim 3, wherein said pressure plate is provided with a barrel which is rotatably connected to a connecting rod.

5. The apparatus as claimed in claim 2, wherein the connecting rod has a top block at an end thereof connected to the piston of the cylinder, and the bearing plate has a socket into which the top block is inserted.

6. A hydraulic lock type cone crusher as claimed in claim 5, wherein said top block is provided with a stopper, and said insertion hole is provided with a stopper hole into which the stopper is inserted and a rotation hole through which the top block and the stopper rotate.

7. A hydraulic locking cone crusher as in claim 1 wherein said locking cylinder is connected to an oil pump through an oil outlet pipe and an oil return pipe, said oil return pipe being provided with an overflow valve.

8. A method of locking a hydraulically locked cone crusher, comprising: connecting the connecting rod with the oil cylinder piston, and extending the oil cylinder piston into the cylinder barrel; the connecting rod is rotated to enable the oil cylinder piston to be connected with the cylinder barrel in a sliding and sealing mode; fixedly connecting the connecting rod with the feed hopper; and starting an oil pump to input high-pressure oil into the cylinder barrel, and keeping the oil pressure constant after the oil pressure reaches a preset value.

9. A method of locking a hydraulically locked cone crusher as claimed in claim 8, wherein said rotating connecting rod slidably and sealingly connecting the cylinder piston to the cylinder barrel comprises: rotating the connecting rod to connect the pressing plate on one side of the sealing gasket with the connecting rod in a screwing way; and after the pressing plates on the other sides of all the sealing gaskets are contacted with the connecting rod, reversely rotating the connecting rod to enable the pressing plates on the other sides of all the sealing gaskets to be in rotary contact with the connecting rod to extrude the sealing gaskets.

10. A method of locking a hydraulically locked cone crusher as claimed in claim 9, wherein said top block is inserted into the insertion hole to abut against the bearing plate after the pressing plate of the other side of the whole packing is brought into contact with the connecting rod.

Technical Field

The invention relates to the field of cone crushers, in particular to a hydraulic locking type cone crusher and a locking method.

Background

At present, the problem that the size of broken stones is inconsistent due to the fact that the distance between a movable cone and a fixed cone is changed frequently after the cone crusher is used for a period of time is solved, in order to solve the problem, a patent with the publication number of CN203990731U provides a solution, and the design of locking through a plurality of locking cylinder assemblies in the patent enables the stability of adjusting the fixed position of a threaded sleeve to be kept in the process of crushing stones by the cone crusher, namely, the distance (a dragon mouth) between the movable cone and the fixed cone to be kept stable.

However, the solution provided by this patent is not very reliable and effective in practical use, and often the problem of changing the distance between the movable cone and the fixed cone still occurs after several years of use, because the hydraulic locking principle adopted by this patent is that the piston 16 of the locking cylinder is pushed by high-pressure oil to move upwards, the locking bolt 17 drives the adjusting screw sleeve 3 to move upwards to force the engaging teeth of the upper frame 7 engaged with the adjusting screw sleeve 3 to make strong frictional contact, and the engaging teeth are worn by the vibration impact when the movable cone and the fixed cone work for a long time, and as long as time passes, the engaging teeth engaged with the adjusting screw sleeve 3 and the upper frame 7 generate gaps, and the two teeth are no longer in strong frictional contact, so the problem of changing the distance between the movable cone and the fixed cone occurs, although the technician adopts the method of injecting high-pressure oil into the locking cylinder to make the engaging teeth which are no longer in strong frictional contact restore the strong frictional contact, however, since the gap is formed between the meshing teeth and the cone crusher all the time when the meshing teeth are not in strong frictional contact any more until the strong frictional contact is restored, the size of the crushed stone is changed in the time, so that the oil pressure of the locking cylinder is adjusted in time, and the situation that the size of the crushed stone is changed due to the adjustment and control time difference is solved by technical problems which are solved by technical personnel in the field all the time.

Disclosure of Invention

The invention mainly aims to provide a hydraulic locking type cone crusher and a locking method, and aims to solve the problem that the size of crushed stones is inconsistent due to the fact that the distance between a movable cone and a fixed cone is changed after the existing cone crusher is used for a period of time.

In order to solve the problems, the invention provides a hydraulic locking type cone crusher, which comprises a crusher body and a feeding hopper, wherein the lower end of the feeding hopper is provided with a fixed cone matched with a movable cone, the feeding hopper is connected with the crusher body through a plurality of locking oil cylinders, and each locking oil cylinder comprises:

the cylinder barrel is fixedly connected with the machine body;

the oil cylinder piston is hermetically and slidably arranged in the cylinder barrel, and the sliding direction of the oil cylinder piston is vertical to the connecting surface of the fixed cone and the machine body; and

one end of the connecting rod is connected with the oil cylinder piston, and the other end of the connecting rod is connected with the feed hopper.

In one embodiment, the cylinder piston includes:

a wear-resistant cylinder, one end of which is sealed;

the pressure bearing plate is abutted against the bottom of the wear-resistant cylinder; and

the sealing rings are a plurality of in number and are all tightly sleeved on the connecting rods, and the sealing rings can push the outer diameter of the wear-resistant cylinder to be enlarged and tightly attached to the inner wall of the cylinder barrel.

In one embodiment, the sealing washer includes sealed the pad and presss from both sides the clamp plate of locating sealed pad both sides, the clamp plate connects with the connecting rod soon, and rotatory connecting rod can make two clamp plates be close to each other and extrude sealed pad, makes the external diameter grow of sealed pad then and promotes the external diameter grow of wear-resisting section of thick bamboo and hug closely in the cylinder inner wall.

In one embodiment, the pressing plate is provided with a screw cylinder screwed with the connecting rod.

In one embodiment, one end of the connecting rod, which is connected with the piston of the oil cylinder, is provided with a top block, and the bearing plate is provided with a jack into which the top block is inserted.

In one embodiment, the top block is provided with a limiting block, and the jack is provided with a limiting hole for the limiting block to be inserted into and a rotating hole for the top block and the limiting block to rotate.

In one embodiment, the locking oil cylinder is connected with an oil pump through an oil outlet pipe and an oil return pipe, and an overflow valve is arranged on the oil return pipe.

In addition, in order to solve the above problems, the present invention also provides a locking method of a hydraulic locking type cone crusher, comprising:

connecting the connecting rod with the oil cylinder piston, and extending the oil cylinder piston into the cylinder barrel;

the connecting rod is rotated to enable the oil cylinder piston to be connected with the cylinder barrel in a sliding and sealing mode;

fixedly connecting the connecting rod with the feed hopper;

and starting an oil pump to input high-pressure oil into the cylinder barrel, and keeping the oil pressure constant after the oil pressure reaches a preset value.

In one embodiment, said rotating connecting rod connecting the cylinder piston with the cylinder barrel in a sliding and sealing manner comprises:

rotating the connecting rod to connect the pressing plate on one side of the sealing gasket with the connecting rod in a screwing way;

and after the pressing plates on the other sides of all the sealing gaskets are contacted with the connecting rod, reversely rotating the connecting rod to enable the pressing plates on the other sides of all the sealing gaskets to be in rotary contact with the connecting rod to extrude the sealing gaskets.

In one embodiment, after the pressing plate on the other side of all the sealing gaskets is contacted with the connecting rod, the top block extends into the jack and is abutted against the bearing plate.

According to the technical scheme, the locking oil cylinder is connected with the feeding hopper and the machine body, the fixed cone is arranged at the lower end of the feeding hopper, the feeding hopper is fixedly connected with the machine body by injecting high-pressure oil into the locking oil cylinder, in addition, the feeding hopper is not in contact with the machine body, so that the problem of abrasion caused by shaking of the fixed cone is solved, the defects of the existing hydraulic locking type cone crusher are effectively overcome, and an oil cylinder piston in the locking oil cylinder has elasticity and can bear vibration impact caused by shaking of the fixed cone without losing the sealing effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the hydraulically locked cone crusher of the present invention;

FIG. 2 is an internal structural view of the hydraulically locked cone crusher of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is an internal structural view of a cylinder piston;

FIG. 5 is a front view of the connecting rod;

FIG. 6 is a right side view of the connecting rod;

fig. 7 is a schematic structural view of a pressure bearing plate;

fig. 8 is a sectional view B-B in fig. 7.

The reference numerals are explained below:

1. a body; 2. a drive shaft; 3. a movable cone; 4. a feed hopper; 5. fixing a cone; 6. a cylinder barrel;

7. a cylinder piston; 71. a pressure bearing plate; 72. a gasket; 721. a first gasket; 722. a second gasket; 723. a third gasket; 73. pressing a plate; 731. a first platen; 732. a second platen; 733. a third press plate; 734. a fourth platen; 735. a fifth pressing plate; 736. a sixth platen; 74. a wear-resistant cylinder;

8. a connecting rod; 81. a slot; 82. a first external screw thread; 83. a second external screw thread; 84. a third external thread; 85. a fourth external screw thread; 86. a fifth external thread; 87. a sixth screw external thread; 88. a top block; 89. a limiting block;

9. a screw cylinder; 10. a jack; 11. a limiting hole; 12. rotating the hole; 13. rounding off; 14. an oil delivery pipe; 15. an oil outlet pipe; 16. an oil return pipe; 17. an overflow valve; 18. an oil pump.

Detailed Description

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

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The invention provides a hydraulic locking type cone crusher, compared with the prior conventional hydraulic locking type cone crusher (namely, the hydraulic locking type cone crusher disclosed by the patent with the publication number of CN 203990731U), the hydraulic locking type cone crusher of the invention is characterized in that a fixed cone 5 is fixedly arranged at the lower end of a feed hopper 4, then the feed hopper 4 is connected with a machine body 1 only through a locking oil cylinder, and rigid contact structures such as strong friction contact and the like between meshing teeth are not arranged, therefore, when the cone crusher works, vibration impact generated by shaking of the fixed cone 5 is absorbed by the locking oil cylinder and is not transmitted to the machine body 1, and an oil cylinder piston 7 in the locking oil cylinder has elasticity, thereby not only effectively sealing a cylinder barrel 6 and preventing high-pressure oil in the cylinder barrel 6 from leaking, but also absorbing vibration impact generated by shaking of the fixed cone 5, and ensuring that the distance between a movable cone 3 and the fixed cone 5 is not changed after the cone crusher works for a long time, the locking is stable and reliable.

Referring to fig. 1 and 2, in an embodiment of the invention, the hydraulically-locked cone crusher comprises a body 1 and a feed hopper 4, the lower end of the feed hopper 4 is provided with a fixed cone 5 matched with a movable cone 3, the movable cone 3 is driven by a transmission shaft 2, the fixed cone 5 is fixed at the lower end of the feed hopper 4, the feed hopper 4 and the body 1 are connected by a plurality of locking cylinders, usually, the locking cylinders are distributed in central symmetry outside the feed hopper 4, when high-pressure oil is not injected into the locking cylinders, a cylinder piston 7 can move in a cylinder barrel 6, relative displacement can still occur between the feed hopper 4 and the body 1, when high-pressure oil is injected into the locking cylinders, the cylinder piston 7 is locked and can not move in the cylinder barrel 6, at this time, the feed hopper 4 and the body 1 are actually fixedly connected by the plurality of locking cylinders, but the fixed connection is different from a conventional rigid connection, for example, when the fixed connection of the present invention is pressed and exceeds the standard (for example, there is an uncrushable object such as an iron block between the fixed cone 5 and the moving cone 3), the locking cylinder can unload part of high pressure oil, and then the fixed cone 5 is caused to move, so as to protect the safety of the fixed cone 5 and the moving cone 3, while the conventional rigid contact fixed connection obviously has no protection function.

In this embodiment, the locking cylinder includes a cylinder barrel 6, a cylinder piston 7 and a connecting rod 8, as shown in fig. 2, the cylinder barrel 6 is obliquely inserted and fixed on the machine body 1, and the oblique direction of the cylinder barrel 6 is perpendicular to the fixed cone 5, that is, the oblique direction of the cylinder barrel 6 is the direction in which the fixed cone 5 moves, the cylinder piston 7 is hermetically and slidably installed in the cylinder barrel 6, and the sliding direction thereof is perpendicular to the connecting surface of the fixed cone 5 and the machine body 1, that is, the sliding direction of the cylinder piston 7 is the direction in which the fixed cone 5 moves, so that the distance between the fixed cone 5 and the movable cone 3 can be ensured to be unchanged as long as the cylinder piston 7 is ensured not to slide in the cylinder barrel 6; as shown in fig. 3, one end of the connecting rod 8 is fixedly connected with the cylinder piston 7, and the other end is fixedly connected with the feed hopper 4.

In this embodiment, as shown in fig. 3 and 4, the cylinder piston 7 includes a wear-resistant cylinder 74, a pressure-bearing plate 71 and a sealing ring, the wear-resistant cylinder 74 is a cylinder body with only an opening at the lower end, the upper end of the cylinder body is sealed, the wear-resistant cylinder 74 is made of a metal wear-resistant material by stamping and integral molding, and has a small thickness, generally not more than 3 mm, and can deform after being pressed; the pressure bearing plate 71 is arranged at the upper end inside the wear-resistant cylinder 74 and abuts against the bottom of the wear-resistant cylinder 74, so that when high-pressure oil acts on the upper end of the wear-resistant cylinder 74, the bottom of the wear-resistant cylinder 74 is not sunken downwards, and further, in order to prevent the pressure bearing plate 71 from damaging the wear-resistant cylinder 74 formed by impact, as shown in fig. 8, the corner of the pressure bearing plate 71 is subjected to fillet 13 treatment; the sealing rings are multiple in number and are all tightly sleeved on the connecting rod 8, the outer diameters of the sealing rings are larger than the inner diameter of the wear-resistant cylinder 74, therefore, the sealing rings can push the outer diameter of the wear-resistant cylinder 74 to be enlarged and tightly attached to the inner wall of the cylinder barrel 6, the wear-resistant cylinder 74 and the inner wall of the cylinder barrel 6 are sealed, the upper end of the connecting rod 8 penetrates through the sealing rings to tightly push the bearing plate 71, and the bearing plate 71 is prevented from moving in the wear-resistant cylinder 74.

In this embodiment, further, in order to facilitate the disassembly and assembly of the cylinder piston 7, the sealing ring includes a sealing pad 72 and a pressing plate 73 disposed on two sides of the sealing pad 72, the sealing pad 72 is made of rubber, and after the sealing pad is pressed, the outer diameter of the sealing pad increases to push the outer diameter of the wear-resistant cylinder 74 to increase and cling to the inner wall of the cylinder 6, and when the sealing pad 72 is pressed, the outer diameter of the sealing pad is equal to the inner diameter of the cylinder 6 or slightly smaller than the inner diameter of the cylinder 6, so that the sealing pad 72 is conveniently installed in the cylinder 6, and the existence of the sealing pad 72 can seal the wear-resistant cylinder 74 with the inner wall of the cylinder 6, and can also absorb the vibration impact of the fixed cone 5, thereby ensuring that the cylinder piston 7 can still reliably slide in a sealing manner under the vibration impact of the fixed cone 5.

In this embodiment, the pressing plate 73 is made of a hard material, preferably a metal material, the pressing plate 73 is disposed on two sides of the sealing pad 72 to press the sealing pad 72, further, in order to facilitate the operation of the pressing plate 73 to press the sealing pad 72, a mode of screwing the pressing plate 73 to the connecting rod 8 may be adopted, the pressing plate 73 presses the sealing pad 72 or the clamping of the sealing pad 72 is released by rotating the connecting rod 8 forward and backward, and the mode of screwing the pressing plate 73 to the connecting rod 8 by using the cylinder piston 7 with three sealing rings is described in detail below, it should be noted that in the cylinder piston 7 with other numbers of sealing rings, the mode of screwing the pressing plate 73 to the connecting rod 8 is the same as the mode of screwing the pressing plate 73 to the connecting rod 8 in the cylinder piston 7 with three sealing rings.

In this embodiment, as shown in fig. 5, a first external screw thread 82, a second external screw thread 83, a third external screw thread 84, a fourth external screw thread 85, a fifth external screw thread 86, and a sixth external screw thread 87 are sequentially arranged on the connecting rod 8 from left to right at intervals, wherein the rotating directions of the first external screw thread 82, the third external screw thread 84, and the fifth external screw thread 86 are the same, the rotating directions of the second external screw thread 83, the fourth external screw thread 85, and the sixth external screw thread 87 are the same and are opposite to the rotating directions of the first external screw thread 82, the third external screw thread 84, and the fifth external screw thread 86, the diameter of the connecting rod 8 gradually decreases from left to right, as shown in fig. 4, the three sealing rings are respectively a first sealing ring, a second sealing ring, and a third sealing ring, the first sealing ring is composed of a first pressure plate 731 and a second pressure plate 732, and a first sealing gasket 721 sandwiched between the first pressure plate 731 and the second pressure plate 732, the second sealing ring is composed of a third pressing plate 733, a fourth pressing plate 734 and a second sealing gasket 722 clamped between the third pressing plate 733 and the fourth pressing plate 734, the third sealing ring is composed of a fifth pressing plate 735, a sixth pressing plate 736 and a third sealing gasket 723 clamped between the fifth pressing plate 735 and the sixth pressing plate 736, the first pressing plate 731 is screwed with the first screw thread 82, the second pressing plate 732 is screwed with the second screw thread 83, the third pressing plate 733 is screwed with the third screw thread 84, the fourth pressing plate 734 is screwed with the fourth screw thread 85, the fifth pressing plate 735 is screwed with the fifth screw thread 86, the sixth pressing plate 736 is screwed with the sixth screw thread 87, the first sealing gasket 721, the second sealing gasket 722 and the third sealing gasket 723 are sleeved on the connecting rod 8, for example, as shown in fig. 4, the connecting rod 8 is installed to gradually pass through the first pressing plate 731, the first sealing gasket 721, the second sealing gasket 732 and the third sealing gasket 723 in an inclined manner upwards, After the upper end of the connecting rod 8 is pressed against the pressure-bearing plate 71, the first pressure plate 731, the third pressure plate 733, and the fifth pressure plate 735 are respectively screwed to the first screw thread 82, the third screw thread 84, and the fifth screw thread 86, the second pressure plate 732, the fourth pressure plate 734, and the sixth pressure plate 736 are respectively screwed to the second screw thread 83, the fourth screw thread 85, and the sixth screw thread 87, and then the connecting rod 8 is rotated in the opposite direction to make the second pressure plate 732, the fourth pressure plate 734, and the sixth pressure plate 736 respectively screwed to the second screw thread 83, the fourth screw thread 85, and the sixth screw thread 87, in this process, the first pressure plate 731 and the second pressure plate 732 approach each other to press the first gasket 721, the third pressure plate 733 and the fourth pressure plate 734 approach each other to press the second gasket 722, the fifth pressure plate 735 and the sixth pressure plate 736 approach each other to extrude the third sealing gasket 723, the outer diameter of the wear-resistant cylinder 74 is enlarged and pushed to be tightly attached to the inner wall of the cylinder barrel 6 after the sealing gasket 72 is pressed, reliable sliding sealing between the wear-resistant cylinder 74 and the inner wall of the cylinder barrel 6 is achieved, and then the lower end of the connecting rod 8 is fixedly inserted into the feed hopper 4.

In this embodiment, in order to rotate the connecting rod 8, as shown in fig. 5, a slot 81 is provided at the left end of the connecting rod 8 to facilitate screwing the connecting rod 8 by a tool, and the slot 81 is typically a straight slot or a cross slot.

In the present embodiment, for example, to enhance the thread connection strength and connection stability of the pressing plate 73 on the connecting rod 8, as shown in fig. 3 and 4, a screw cylinder 9 is fixedly mounted on each pressing plate 73, and the screw cylinder 9 and the pressing plate 73 fixedly connected thereto are screwed with the same external thread.

In this embodiment, connecting rod 8 and bearing plate 71 swing joint, one of them specific connected mode is as shown in fig. 5-fig. 8, the right-hand member fixed mounting of connecting rod 8 has ejector pad 88, be equipped with on the bearing plate 71 and supply ejector pad 88 activity to insert the jack 10 wherein, further, fixed mounting has stopper 89 on the ejector pad 88, be equipped with on the jack 10 and supply stopper 89 to insert spacing hole 11 wherein and supply ejector pad 88 and stopper 89 pivoted rotatory hole 12, when connecting rod 8 contradicts bearing plate 71, in ejector pad 88 stretches into rotatory hole 12, at this moment, connecting rod 8 rotation drives ejector pad 88 and the stopper 89 above that rotatory hole 12 internal rotation.

In this embodiment, as shown in fig. 1, the locking cylinder is connected to the oil pump 18 through the oil outlet pipe 15 and the oil return pipe 16, since there are a plurality of locking cylinders, the infusion pipe commonly connected to each locking cylinder is commonly communicated with the oil outlet pipe 15, high pressure oil is input into the cylinder barrel 6 of the locking cylinder through the oil pump 18, the high pressure oil pushes the cylinder piston 7 to move obliquely downward, the feeding hopper 4 is clamped and fixed under the combined action of the plurality of cylinder pistons 7 which are distributed in central symmetry, and the fixed connection between the feeding hopper 4 and the machine body 1 is realized.

In this embodiment, the oil return pipe 16 is provided with an overflow valve 17, the fixed cone 5 and the moving cone 3 break stone blocks at ordinary times so as not to cause the oil cylinder piston 7 to move in the cylinder barrel 6, at this time, the overflow valve 17 does not act, the oil pressure of high-pressure oil in the cylinder barrel 6 is kept constant, when an object which can not be broken, such as an iron block, exists between the fixed cone 5 and the moving cone 3, the thrust of the fixed cone 5 to the oil cylinder piston 7 must be increased, and then the oil cylinder piston 7 is caused to move in the cylinder barrel 6, so that the oil pressure of the high-pressure oil is increased, and the overflow valve 17 is triggered to open for pressure relief so as to protect the safety of the fixed cone 5 and the moving cone 3.

In addition, in order to solve the above problems, the present invention also provides a locking method of a hydraulic locking type cone crusher, comprising:

s1, connecting the upper end of the connecting rod 8 with the oil cylinder piston 7, and extending the oil cylinder piston 7 into the cylinder barrel 6;

s2, rotating the connecting rod 8 to make the oil cylinder piston 7 and the cylinder barrel 6 connected in a sliding and sealing way;

s3, fixedly connecting the lower end of the connecting rod 8 with the feed hopper 4;

and S4, starting the oil pump 18 to input high-pressure oil into the cylinder 6, and keeping the oil pressure constant after the oil pressure reaches a preset value.

In this embodiment, the sliding and sealing connection of the cylinder piston 7 and the cylinder tube 6 by the rotary connecting rod 8 includes:

s21, rotating the connecting rod 8 to rotatably connect the pressing plate 73 on the left side of the gasket 72 with the connecting rod 8;

s22, after the pressing plate 73 on the right side of all the gaskets 72 contacts the connecting rod 8, the connecting rod 8 is rotated in the opposite direction to make the pressing plate 73 on the right side of all the gaskets 72 and the connecting rod 8 rotatably contact and squeeze the gaskets 72.

In this embodiment, when the pressing plate 73 of all the sealing gaskets 72 contacts the connecting rod 8, the top block 88 extends into the insertion hole 10 and is movably abutted against the bearing plate 71.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.