HK1083231B - Crusher bucket with crushing lid - Google Patents

Description

Bucket with crushing cover of crusher

Technical Field

The present invention relates to a bucket with a crushing cover for a crusher for recovering asphalt blocks, concrete waste, and the like. More particularly, the present invention relates to a bucket with a crushing cover of a crusher capable of improving maintainability and productivity of a bucket having a material crushing function attached to a front end of an arm of a civil engineering machine.

Background

Generally, an impact crusher is used for crushing and crushing materials to be crushed (raw materials) such as concrete waste, asphalt mixture blocks, and stones and crushed stones for civil engineering and construction, which are industrial waste, and the crushed materials can be recycled. The impact crusher rotates a rotor having a plurality of hammers arranged radially in a housing and a horizontal shaft, and crushes an inputted material to be crushed by applying an impact between the rotor and a repulsive plate arranged on an inner surface of the housing. Since the hammer attached to the rotor directly applies an impact force to the material to be crushed, the tip portion of the hammer wears away after a certain action time.

Generally, after a certain time has elapsed, the front end portion of the hammer is ground, and therefore, the crushing efficiency is significantly reduced. Further, if a large amount of material to be crushed is fed into the crushing chamber in which the hammer is rotating at a time, the material to be crushed may be caught between the housing body (bucket body) and the hammer, causing the crushing operation to be interrupted. If the material to be crushed is clamped in this way, the hammer must be detached to take out the clamped material to be crushed. As for the hammer attachment structure, the present applicant has proposed a structure in which, after a hammer is inserted into a notch portion of a rotor body, an engagement protrusion is fitted into an engagement hole of a holding block supported between members to fix the hammer (patent document 1 and patent document 2).

The hammer of these fixed impact crushers is fixed, but in a small crusher, the hammer is swingably supported on a swing shaft, and the raw material is crushed by the swing of the hammer. The oscillating hammer can also be used to mix soil improvement materials such as air and hardening materials into clayey soil and stir and mix the soil improvement materials. When replacing the hammer, the swinging shaft supporting the swingable hammer is usually pulled out and replaced.

On the other hand, in a method of treating waste materials such as asphalt in a treatment site provided with a recovery plant, the waste materials need to be transported from the site where the waste materials are generated to the treatment site, and therefore, the transportation work, time, and cost are required. For this reason, recently, a method of directly treating a small amount of recovered raw material on a waste site has been proposed. Among them, a method of treating with a bucket of a civil engineering machine is known. Many methods of crushing in a bucket and structures thereof have been proposed (for example, patent documents 3, 4, and 5).

Patent document 1: japanese Kokai publication Hei-4-45547

Patent document 2: japanese patent laid-open publication No. 2001-190972

Patent document 3: japanese laid-open patent publication No. 9-88355

Patent document 4: japanese laid-open patent publication No. 10-30247

Patent document 5: japanese patent laid-open publication No. 2001-113198

Disclosure of Invention

When a material to be crushed is clamped, the hammer of the crusher needs to be detached and attached to take out the material to be crushed. In addition, when the hammer is worn or damaged, the hammer must be replaced. In the above-described removal work and attachment work, and hammer replacement work when the hammer is worn or damaged, the work stop time is long, and productivity is reduced. Further, in the impact hammer, since the hammer is relatively frequently replaced and is relatively small in size, the space for replacement is small, and the operation is not easy to be performed, it is necessary to perform these operations as efficiently as possible. In particular, in the case of a swing hammer, the swing shaft must be removed for replacement, and even another hammer that is not to be replaced and is provided on the swing shaft must be removed at a time.

That is, it is desired to develop a bucket with a crushing cover for a crusher, which can improve maintainability and productivity, can reduce the work of taking out the material to be crushed as much as possible without sandwiching the material to be crushed, and can facilitate the work of removing and attaching the hammer when the work of taking out is performed after sandwiching by chance.

The present invention has been made to solve the above problems, and its object is as follows.

The invention aims to provide a bucket with a crushing cover of a crusher, which can feed raw materials (materials to be crushed) into a crushing chamber little by a preset amount, and the raw materials are not easy to be clamped between a bucket body and a hammer and the like.

Another object of the present invention is to provide a bucket with a crushing cover for a crusher, which can easily perform a removal operation and an attachment operation of a hammer, and which can improve maintainability and productivity.

In order to achieve the above object, the present invention adopts the following technical means.

The invention relates to a bucket with a crushing cover of a crusher 1, which consists of a bucket body, a crushing cover, a raw material feeding amount adjusting mechanism, a hammer and a repulsion plate; the raw material feeding amount adjusting mechanism is arranged on the bucket body and/or the crushing cover and is used for feeding the raw material which is scooped up by the bucket body into the crushing chamber in a predetermined amount; the hammer is arranged on the periphery of the rotor driven by the power driving mechanism to rotate, and is used for striking and crushing the raw material fed into the crushing chamber; the repulsion plate is arranged on the crushing cover and collides with the raw material which is beaten by the hammer; wherein the crushing cover is openable and closable with respect to the bucket body, the hammer has an opening portion which is opened outward, and a notch which communicates with the opening portion and in which a bearing is formed to support the hammer when the rotor rotates; the device is provided with a hammer swinging pin, a crushing tooth extrusion component and a fixing mechanism; the hammer swinging pin is used for inserting the bearing through the opening part during assembly to support the hammer in a swinging way; the crushing tooth extrusion component is inserted into the opening part and fixed on the hammer; the fixing mechanism is used for fixing the hammer and the crushing tooth pressing part to each other.

The present invention 2 is the bucket with a crushing cover of the crusher according to the present invention 1, wherein the raw material feed amount adjusting mechanism is a weir provided on a bottom wall of the bucket body.

The present invention 3 is the crushing-lid bucket with a crusher according to the present invention 1, wherein the connecting means is formed by engaging means formed at both ends of the opening portion, and engaged means connected to the engaging means is formed on the crushing tooth pressing member.

The invention 4 is the bucket with a crushing cover of the crusher according to the invention 1, wherein the two crushing tooth pressing members are provided so as to face each other; the crushing teeth pressing member is provided with a plurality of crushing teeth, and the crushing teeth pressing member is provided with a plurality of crushing teeth pressing members, and the crushing teeth pressing members are provided with a plurality of crushing teeth pressing members.

A bucket with a crushing cover of a crusher of the present invention is provided with a weir as a raw material feed amount adjusting mechanism on a bottom wall of the bucket, and can feed a raw material into a crushing chamber little by little at a constant amount. Therefore, the material is hardly sandwiched between the bucket body and the hammer, and the work of taking out the sandwiched material can be greatly reduced. In addition, the swinging hammer can be easily detached and attached without detaching the swinging shaft supporting the swinging hammer. Namely, in the bucket with the crushing cover, the maintainability is improved.

In addition, in the crusher, maintenance time, namely stop time except crushing operation is reduced, and productivity is improved.

Drawings

Fig. 1 is a side view of a bucket with a crushing lid of a crusher according to embodiment 1.

Fig. 2 is a front view of a bucket with a crushing lid according to embodiment 1.

Fig. 3 is an X-X sectional view of fig. 2.

Fig. 4 is a side view showing a crushing cover provided with a repulsive plate liner and a first scattering prevention member.

Fig. 5 is a side view showing a crushing cover provided with a repulsive plate liner and a second scattering prevention member.

Fig. 6 is a partial view showing a structure of the crush cap to which the first scattering prevention member is attached.

Fig. 7 is a hammer of the hammer attachment/detachment fixing mechanism 1, fig. 7(a) is a front view, and fig. 7(b) is a right side view.

Fig. 8 is a crushing tooth pressing member of the attachment/detachment fixing mechanism 1, fig. 8(a) is a plan view, and fig. 8(b) is a front view.

Fig. 9 is an explanatory view showing an assembly procedure when the hammer is mounted on the hammer swing pin of the attachment/detachment fixing mechanism 1.

Fig. 10 is a plan view of fig. 9.

Fig. 11 is an explanatory view of a state in which the hammer is attached to the hammer swing pin.

Fig. 12 is a hammer of the hammer attachment/detachment fixing mechanism 2, fig. 12(a) is a front view, and fig. 12b is a right side view.

Fig. 13(a) and (b) are views of the first crushing tooth pressing member of the attachment/detachment fixing mechanism 2, fig. 13(a) is a front view, and fig. 13(b) is a right side view. Fig. 13(c) and (b) are views of the first crushing tooth pressing member of the attachment/detachment fixing mechanism 2, fig. 13(c) is a front view, and fig. 13(d) is a left side view.

Fig. 14 is an explanatory view of an assembly procedure when the hammer is mounted on the hammer swing pin of the attachment/detachment fixing mechanism 2.

Fig. 15 is a plan view of fig. 14.

Fig. 16 is an explanatory diagram of a state in which the hammer is attached to the hammer swing pin.

Fig. 17 is a side view of a bucket with a crushing lid of a crusher according to embodiment 2.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings.

[ scraper bucket with a crushing cover of the crusher of embodiment 1 ]

Embodiment 1 of a bucket with a crushing cover of a crusher of the present invention will be described in detail with reference to fig. 1 to 6. FIG. 1 is a side view of a bucket with a crushing lid of the present invention. Fig. 2 is a front view of the bucket with a crushing cover. Fig. 3 is an X-X sectional view of fig. 2, which is a sectional view of a side corresponding to fig. 1. Fig. 4 is a side view of the crushing cover, showing a state in which the repulsive plate liner is attached to the inner wall and the first scattering prevention member is attached to the side wall. Fig. 5 is a side view of the crushing cover, showing a state in which the repulsive plate liner is attached to the inner wall and the second scattering prevention member is attached to the tip end portion. Fig. 6 is a partial view showing a structure of the crush cap to which the first scattering prevention member is attached.

A backhoe using a bucket with a chipping cover is a civil engineering machine of the same system as an excavator, and is a well-known civil engineering excavator, and therefore, description of a backhoe structure will be omitted. Generally, the method is used for excavating a foundation lower than a machine position and performing operations such as boring and trenching.

A swingable bucket 3 is provided at the tip of the arm 1 via a support shaft 2. The arm 1 is provided with a bucket cylinder (not shown), and a piston rod tip portion of the bucket cylinder is connected to one end of the link member 4 via a shaft 5 so as to be relatively rotatable. The other end of the link member 4 is relatively rotatably attached to a bucket body 7 via a shaft 6. That is, when the piston rod moves forward and backward by the driving force of the bucket cylinder, the bucket body 7 swings about the support shaft 2.

The bucket 3 can be moved to any position within the swing range of the backhoe body and can also be changed in orientation. The bucket body 7 of the bucket 3 scoops up raw materials (materials to be crushed) such as asphalt blocks and concrete blocks, and takes them into the interior to be crushed, transported, and the like.

The bucket with a crushing cover is provided with a discharge port for discharging a crushed material crushed to a predetermined size at the bottom, and a mesh-like grating for adjusting the particle size is attached to the discharge port as described later. An opening 8 for introducing a raw material such as waste is provided in an upper portion of the bucket body 7 of the bucket 3. The rotor shaft 9 is rotatably provided in the bucket body 7 and is driven by a rotor driving device 10 disposed outside the bucket body 7.

In embodiment 1, 8 disks 23 are disposed on the rotor shaft 9 at predetermined intervals. The rotor shaft 9 and the circular plate 23 constitute a rotor. Between the disks 23, hammer swing pins 24 having heads are arranged at 90-degree intervals on the outer periphery. The other end of the hammer swing pin 24 is formed with a thread into which a nut is screwed. Two pivotable hammers 11 are provided on the hammer pivot pin 24. The joint structure of the hammer rocking pin 24 and the hammer 11 will be described later.

The hammers 11 are fixed in a swingable state, and when the rotor shaft 9 rotates, the hammers 11 collide with the raw material to strike the raw material, thereby crushing the raw material. As described later, the hammer 11 is made of a hard and wear-resistant metal material, and is replaceable when worn or broken. When the impact surface of the hammer 11 is worn or broken, it can be replaced with a new one.

When the crushing lid 12 is closed or half opened, the inside of the bucket body 7 is configured as a crushing chamber 7a (see fig. 3), and the charged raw material is crushed. The inner wall of the crushing chamber 7a is covered with a hard material. A crushing cover 12 is provided on the upper portion of the bucket body 7. The bucket body 7 is provided with a lid opening/closing cylinder (opening/closing device) 13, and the opening/closing cylinder 13 performs a swing opening/closing operation of the crushing lid 12 via a shaft 13 a.

When the material is crushed in the crushing chamber 7a, the crushing lid 12 is closed to prevent the crushed material from scattering from the opening 8 to the outside of the bucket body 7. A piston rod 13b of the cover opening/closing cylinder 13 is connected to one end of the crushing cover 12 via a rod 14 and a shaft 15. Therefore, when the cover opening/closing cylinder 13 is driven, the crushing cover 12 is swung to open and close with the shaft 15 provided to the bucket body 7 as a fulcrum.

A rod 14 is attached to the shaft 15, and the end of the piston rod 13b is coupled to the rod 14. When the piston rod 13b moves forward and backward, the crushing lid 12 is opened and closed by the rod 14 and the shaft 15. In fig. 3, the state in which the crushing cover 12 is closed is shown by a solid line, and the state in which the crushing cover 12 is opened is shown by a two-dot chain line. Here, the opening/closing device uses the cover opening/closing cylinder 13, but a hydraulic motor, an electric motor using a screw member, or the like may be used.

Further, a repulsive plate liner 16 for crushing is attached to the inner wall of the crushing lid 12. The repulsive plate liner 16 is substantially V-shaped, and its central portion protrudes in a convex shape. The repulsive plate liner 16 of embodiment 1 is a hard material, and when abrasion or breakage occurs due to the crushing operation, it can be detached separately and replaced with a new repulsive plate liner 16.

Since the repulsive plate liner 16 is convex, the raw material is easily crushed by the impact of the convex, and the crushing effect is further improved. The shape of the crushing lid 12 is a slightly circular arc shape which matches the shape of the rotating outer periphery of the hammer 11 when the crushing lid 12 is closed. When the crushing lid 12 is closed, the crushing chamber 7 is formed between the bucket body 7 and the crushing lid 12, and the raw material is crushed by the rotation of the hammer 11 of the rotor.

Next, the scattering prevention structure will be described. In the crushing lid 12 of embodiment 1, scattering prevention members are provided at two locations, namely, a width-direction portion and a tip portion. In the width direction portion, as shown in fig. 4, the first scattering prevention members 17 are attached to both side surfaces of the crushing cover 12 in an arc shape along the shape of the cover. Which is shaped to face the inner wall of the bucket body 7.

The first scattering prevention member 17 is provided on the reinforcing wall 12a of the fragmentation lid 12. The reinforcing wall 12a is spaced apart from the inner wall of the bucket body 7 by a predetermined distance, and a first scattering prevention member 17 is provided to fill the gap. The first scattering prevention member 17 is fixed to the reinforcing wall 12a of the crush cover 12 by welding or screws. The fixed first scattering prevention member 17 is in line contact with the inner wall of the bucket body 7 or faces each other with a gap of about 1 to 3 mm. The gap is a gap that does not affect the opening and closing operation.

The first scattering prevention member 17 has a circular cross-sectional shape, and fig. 6 shows a state in which a round bar 17a is bent into a circular arc shape and fixed to the reinforcing wall 12a by welding. Further, a second scattering prevention member 18 is provided at the front end of the crushing cover 12 as shown in fig. 5.

The second scattering prevention member 18 is constructed such that a sealing member 18a directly contacting the bottom wall of the bucket body 7 is moved forward and backward by a spring member 18b and held by a plate 18 c. The second scattering prevention member 18 is attached along the entire width of the crushing lid 12, and when the crushing lid 12 is closed, the front end portion thereof comes into contact with the bottom of the bucket body 7 so as to seal the crushing chamber 7 a.

On the side wall of the bucket body 7, a rotor driving device 10 for driving the rotor shaft 9 is provided. The rotor driving device 10 rotates the rotor shaft 9 via a hydraulic motor by means of a V-belt 10 a. Rotor driving devices 10 having the same structure are provided on both side surfaces of the bucket body 7. Since the rotor driving devices 10 having the same structure are provided on both sides of the bucket body 7, the rotation balance of the rotor shaft 9 is improved, and the rotation operation of the rotor shaft 9 is flexible, and a high torque can be obtained.

Further, since the drive is performed by the V-belt 10a, noise generated by the drive and vibration of the bucket body 7 can be reduced as compared with the form in which the rotor shaft 9 is directly connected. Further, even in the case of a sudden rotation operation, a normal/reverse switching operation, or a sudden overload at the time of crushing, since the V-belt 10a can absorb the shock, damage to the power transmission portion and the motor can be prevented. The rotation direction of the rotor shaft 9 of the rotor driving device 10 is not limited, and forward and reverse rotation can be selected by operation. As a result, the crushing of the raw material is promoted, and the crushing efficiency is improved. The rotor driving device 10 is supported by a casing 19, not shown, and is attached to a side wall of the bucket body 7. The drive system is connected to a rotor shaft 9 inside the bucket body 7.

The crushed material falls to the lower part of the bucket body 7 as crushed material crushed to a predetermined size, three discharge ports 20 are provided at the bottom of the bucket body 7, and the crushed material crushed or pulverized is discharged from the discharge ports 20. In general, in order to improve the crushing effect, the discharge ports 20b and 20c on the side surfaces are covered with the cover 21, crushed objects are discharged only from the discharge port 20a corresponding to the falling position, and the other discharge ports 20b and 20c are used for maintenance or the like.

At the discharge port 20a, a mesh 22 of a metal net or an open-pore steel plate of a predetermined mesh is provided to allow only the crushed material of a predetermined grain size to pass therethrough. The mesh shape, size, and material of the grating 22 are selected and used according to the purpose of crushing. Therefore, the crushed material passing through the discharge port 20a is usually not larger than a certain size. The coarse crushed material that has not passed through is discharged from the opening 8 when the bucket 3 is turned upside down.

[ mounting/dismounting fixing mechanism for hammer 1 ]

Fig. 7 is a view showing the hammer 11, fig. 7(a) is a front view, and fig. 7(b) is a right side view. The hammer 11 is made of an impact-resistant steel plate. The impact tip 25 of the hammer 11 is formed at two 90-degree angles 26, and the other end, i.e., the root 27, is formed as a semicircular arc 28. In the center of the semicircular arc 28, a pin hole 29 is formed. The hammer swing pin 24 is formed as a bearing through the pin hole 29, and the hammer 11 is attached to swing the hammer 11 within a predetermined angular range around the hammer swing pin 24.

An L-shaped notch 30 is formed as a space in connection with the pin hole 29. The notches 30 are intended to allow the hammer 11 to be removed from the hammer swing pin 24 and attached without removing the hammer swing pin 24 when replacing the worn hammer 11. Dovetail grooves 32 are formed at both ends of the opening 31 of the notch 30. Further, in the vicinity of the notch 30, a bolt through hole 33 is formed. Fig. 8 is a crushing tooth pressing member, fig. 8(a) is a plan view, and fig. 8(b) is a front view. The dovetail groove 32 is a groove having a dovetail cross section, and a dovetail portion is fitted thereto and called a dovetail joint.

The crushing tooth pressing member 35 is assembled and fixed to the hammer 11 so that the hammer 11 is inserted into the hammer swing pin 24 without falling off. The crushing tooth pressing member 35 has a structure in which an insertion portion 37 is integrally formed between 2 rectangular side plates 36 arranged in parallel. The insertion portion 37 is a portion into which the opening portion 31 of the hammer 11 is inserted. The insertion portion 37 is formed with a dovetail portion 38 having a concave-convex shape opposite to the dovetail groove 32. The dovetail portion 38 is a portion fitted into the dovetail groove 32.

The side plate 36 is integrally provided with a bolt head protecting member 39. In the center of the bolt head protecting member 39, a hole into which the head of a bolt 43 (see fig. 10) is inserted is formed. The bolt 43 is used to fix the crushing tooth pressing member 35 to the hammer 11. The bolt head protecting member 39 covers the head of the bolt 43 from the outer periphery, prevents abrasion of the bolt 43, and prevents the crushing tooth pressing member 35 from coming off the hammer member 11. The side plate 36 has a through hole 40 through which a bolt 43 is inserted. On the other side plate 36, a screw hole 41 for screwing a bolt 43 is formed coaxially with the through hole 40.

Fig. 9 to 11 are explanatory views showing an assembly procedure when the hammer 11 is attached to the hammer swing pin 24. As shown in fig. 9, since the hammer 11 is formed with the notch 31 having the opening 31, the hammer swing pin 24 can be inserted into the pin hole 29 of the hammer 11 by passing the hammer swing pin 24 through the opening 31. Therefore, the hammer swing pin 24 does not have to be detached from the circular plate 23.

In the state shown in fig. 9, the crushing tooth pressing member 35 is taken out, and the insertion portion 37 and the dovetail portion 38 are fitted into the opening portion 31 and the dovetail groove 32 of the hammer 11 from the direction of the arrow shown in fig. 10. Then, a bolt 43 is inserted from the outside into the outer periphery of the disk 23, and after the through hole 40 of the crushing tooth pressing member 35 and the through hole 33 of the hammer 11 are inserted, the screw hole 41 is screwed, and the hammer 11 and the crushing tooth pressing member 35 are fixed to each other (see fig. 11).

The other hammers 11 are also inserted and fixed to the hammer swing pins 24 in the same manner. At this time, the bolts 43 are inserted from the outside into the outer peripheries of the other circular plates 23 and screwed into the screw holes 41. In this embodiment, two hammers 11 are mounted on 1 hammer swing pin 24 (see fig. 2). As described above, when replacing 1 hammer 11 due to wear or damage, the replacement operation can be easily performed by loosening the bolt 43 without detaching the hammer swing pin 24.

[ mounting/dismounting fixing mechanism for hammer 2 ]

Next, the hammer attaching/detaching fixing mechanism 2 having a different shape from the hammer 11 and the crushing tooth pressing member 35 will be described. Fig. 12 is a view showing the hammer 45. Fig. 12(a) is a front view, and fig. 12(b) is a right side view. The hammer 45 has the same basic shape as the hammer 11 described above, and the same components are denoted by the same reference numerals, and the description thereof will be omitted, and only different portions will be described.

In the notch 30, dovetail grooves 50 are formed on both sides of the opening 31. The dovetail groove 50 is inserted by dovetail portions 58 and 68 described later. When the dovetails 58 and 68 are inserted, the opening 31 is prevented from being expanded by the hammer 45 when the hammer is subjected to centrifugal force. Fig. 13 shows crushing tooth pressing members which are composed of two members of a first crushing tooth pressing member and a second crushing tooth pressing member. Fig. 13(a) and (b) are views of the first crushing tooth pressing member of the attachment/detachment fixing mechanism 2, fig. 13(a) is a front view, and fig. 13(b) is a right side view. Fig. 13(c) and (d) are views of the second crushing tooth pressing member of the attachment/detachment fixing mechanism 2, fig. 13(c) is a front view, and fig. 13(d) is a left side view.

The first crushing tooth pressing member 55 and the second crushing tooth pressing member 65 are used to insert the hammer 45 into the hammer swing pin 24 without falling off. The first breaker tooth pressing member 55 has a structure in which an insertion portion 57 is integrally formed on a side surface of a rectangular side plate 56. The insertion portion 57 is a portion into which the opening portion 31 of the hammer 45 is inserted. At both ends of the insertion portion 57, dovetail portions 58 having concave and convex portions opposite to the dovetail grooves 50 of the hammer 45 are formed. The dovetail portion 58 is a portion fitted into the dovetail groove 50. On the side plate 56, two screw holes 59 are formed.

Similarly, the second breaker tooth pressing member 65 has a structure in which an insertion portion 67 is integrally formed on a side surface of the rectangular side plate 66. The insertion portion 67 is a portion that is inserted into the opening portion 31 of the hammer 45 together with the insertion portion 57 of the first crushing tooth pressing member 55. At both ends of the insertion portion 67, dovetail portions 68 having concave and convex portions opposite to the dovetail grooves 50 of the hammer 45 are formed. The dovetail portion 68 is a portion that fits into the dovetail groove 50 together with the dovetail portion 58 of the first crushing tooth pressing member 55. Two bolt head protecting members 69 are integrally provided on the side plate 66.

Fig. 14 to 16 are explanatory views showing an assembly procedure when the hammer 45 is attached to the hammer swing pin 24, and as shown in fig. 14, in a state where the hammer 45 is attached to the hammer swing pin 24, the first crushing tooth pressing member 55 and the second crushing tooth pressing member 65 are opposed to each other so as to sandwich the hammer 45 (arrow direction in fig. 15). Then, the insertion portion 57 and the dovetail portion 58 of the first crushing tooth pressing member 55 are fitted into the opening 31 and the dovetail groove 50 of the hammer 45, respectively. The insertion portion 67 and the dovetail portion 68 of the second crushing tooth pressing member 65 are fitted into the opening 31 and the dovetail groove 50 of the hammer 4, respectively.

By this fitting, the insertion portion 57 and the dovetail portion 58 of the first crushing tooth pressing member 55 are opposed to and brought into contact with the insertion portion 67 and the dovetail portion 68 of the second crushing tooth pressing member 65. A bolt 60 is inserted from the outside into the outer periphery of the circular plate 23, and the hammer 11, the first crushing tooth pressing member 55, and the second crushing tooth pressing member 65 are fixed to each other by screwing the bolt 60 into the screw hole 59 of the first crushing tooth pressing member 55 through the through hole of the bolt head protecting member 69 of the second crushing tooth pressing member 65 (see fig. 16).

[ method for crushing raw Material according to embodiment 1 ]

Next, a method of crushing a raw material in the bucket 3 with a crushing lid according to embodiment 1 will be described. First, in the operation of the bucket with a crushing lid, the crushing lid 12 is closed. In a state where the crushing lid 12 is closed, the raw material is scooped up by the front end portion of the bucket body 7 and taken into the front portion of the bucket body 7, that is, the space 7b between the bucket body 7 and the outer wall of the closed crushing lid 12. Subsequently, the crushing lid 12 is gradually opened, and the raw material is taken into the crushing chamber 7a formed by the bucket body 7 and the inner wall of the crushing lid 12. At this time, since the rotor shaft 9 is in a rotating state, the raw material is crushed little by the impact of the hammer 11 and the impact of the repulsive plate liner 16 of the crushing cover 12, and the crushed material is discharged from the discharge port 20a at the bottom of the bucket body 7. That is, in embodiment 1, the material feed amount adjusting mechanism is constituted by the crushing lid 12, the lid opening/closing cylinder 13 for opening/closing and driving the crushing lid 12, and the like, and the operator can adjust the amount of the material fed to the crushing chamber 7a side by adjusting the opening angle of the crushing lid 12.

After all the scooped material is crushed, the crushing lid 12 is closed, and the material is scooped up by the bucket body 7, and the above-described operation is repeated. By such an operation, the material is crushed in the bucket body 7 little by little while adjusting the crushing amount, the crushed particle shape, and the particle size by the opening and closing operation of the crushing lid 12, and therefore, the rotation operation of the rotor shaft 9 is stabilized. Compared to the conventional method in which all the material is taken into the bucket body 7 at once and crushed, in embodiment 1, the material is crushed gradually, so that overload at the time of crushing is avoided and the material can be crushed while preventing scattering, and therefore, the safety is good and the environment is good. In addition, the raw material is hardly sandwiched between the bucket body 7 and the hammer 11, the rotor, and the like.

In addition to the impact, the raw material is repeatedly rubbed in the crushing chamber 7a while being mixed with other raw materials in accordance with the rotation of the rotor shaft 9, and is crushed. Thus, the crushing efficiency can be improved by repeating the squeezing operation while applying the striking force to the raw material. Since this operation is performed by the two rotor driving devices 10, a large motor is not required, and a balanced crushing rotation can be obtained. The crushed material crushed to a predetermined particle size or less is discharged from the discharge port 20a to the outside of the bucket body 7. If the material cannot be crushed for some reason and remains in the bucket body 7, the bucket body 7 may be inverted to discharge the material or coarse crushed material from the opening 8 side.

[ scraper bucket with a crushing cover of the crusher of embodiment 2 ]

Next, embodiment 2 of the bucket with a crushing cover of the crusher of the present invention will be described.

In the description of embodiment 2 with the crushing lid bucket, the same portions as those in embodiment 1 are denoted by the same reference numerals, and the description thereof will be omitted, and only different portions will be described.

Fig. 17 is a side view of a bucket with a crushing cover of a crusher in which a weir is provided on a bottom wall of a bucket body.

A swingable bucket 80 is provided at the tip of an arm (not shown) via a support shaft 2. A bucket cylinder (not shown) is provided in the arm, and a tip end portion of a piston rod of the bucket cylinder is connected to one end of a connecting member (not shown) via a shaft so as to be relatively rotatable. The other end of the link member is relatively rotatably attached to the bucket body 70 via a shaft 6. That is, when the piston rod moves forward and backward by the driving force of the bucket cylinder, the bucket body 70 swings about the support shaft 2.

The dipper 80 can be moved to any position within the range of the dipper body swing, and can also be oriented. The bucket body 70 of the bucket 80 scoops up raw materials (materials to be crushed) such as asphalt blocks and concrete blocks, and takes them into the interior for crushing, transportation, and the like.

The bucket with a crushing cover is provided with a discharge port portion for discharging crushed materials of a predetermined size at the bottom, and a mesh-like grating 73 for adjusting the particle size is attached to the discharge port portion. The bucket is a bucket with a crushing cover for crushing the charged raw material by striking the raw material with a hammer 74. An opening 82 for inputting raw materials such as waste materials and crushed materials is provided in an upper portion of the bucket body 70 of the bucket 80. A weir 72 as a raw material feed amount adjusting mechanism is provided on a scooping-up surface portion 71 which is a bottom wall of the bucket body 70. The weir 72 is preferably fixed to the scooping face portion 71 by welding, bonding, fusion, or bolting.

The weir 72 functions to prevent the scooped material from being fed into the crushing chamber 70a at once. That is, the operator adjusts the swing angle of the bucket body 70 to adjust the amount of the raw material fed into the crushing chamber 70a over the weir 72. The outer wall of the weir 72 is preferably covered with a hard material.

The rotor shaft 9 is rotatably provided in the bucket body 70 and is driven by a rotor driving device 10 disposed outside the bucket body 70.

A plurality of circular plates are disposed at predetermined intervals on the rotor shaft 9 (see fig. 2). The rotor shaft 9 and the circular plate constitute a rotor. Between the disks, a hammer swing pin having a head is disposed at a predetermined angular interval at an outer peripheral position. A pivotable hammer 74 is provided on the hammer pivot pin. The mechanism for coupling the hammer rocking pin and the hammer is the same as the mechanism for attaching and detaching the hammer 1 and 2. That is, the hammer 74 is fixed by the crushing tooth pressing member 35, the first crushing tooth pressing member 55, the second crushing tooth pressing member 65, and the like.

The basic shape of the hammer 74 is the same as the hammers 11 and 45, and therefore, the detailed description thereof will be omitted. Further, the hammer 74 is preferably formed of a hard, wear-resistant metal material.

The hammers 74 are fixed in a swingable state, and when the rotor shaft 9 rotates, the hammers 74 collide with the raw material to strike the raw material, thereby crushing the raw material. The hammer 74 is made of a hard and abrasion-resistant metal material, and is replaceable when worn or broken. When the impact surface of the hammer 74 is worn or broken, it can be replaced with a new one.

When the crushing lid 76 is closed, the inside of the bucket body 80 is configured as a crushing chamber 70a (see fig. 17), and the raw material is subjected to crushing processing. The inner wall of the crushing chamber 70a is covered with a hard material. A crushing cover 76 is provided on the upper portion of the bucket body 70. The crushing lid 76 can be opened and closed about the shaft 85. The bucket body 70 is provided with a lid opening/closing cylinder 83, and the opening/closing cylinder 83 performs a swing opening/closing operation of the crushing lid 76 by a shaft 86. The piston rod 83b of the cover opening/closing cylinder 83 is connected to the other end 76b of the breaker cover 76 via a shaft 84.

When the material is crushed in the crushing chamber 70a, the one end portion 76a of the crushing cover 76 is in contact with the scooping surface portion 71, and the crushed material is prevented from scattering from the opening 82 to the outside of the bucket body 70. Therefore, when the cover opening/closing cylinder 83 is driven, the crushing cover 76 is swung to open and close with the shaft 85 provided to the bucket body 70 as a fulcrum. In fig. 17, the state in which the crushing cover 76 is closed is indicated by a solid line, and the state in which the crushing cover 76 is opened is indicated by a two-dot chain line.

When the piston rod 83b moves forward and backward, the crushing lid 76 swings about the shaft 85 to open and close the opening 82 of the bucket 80. Further, a repulsive plate liner 77 for crushing is attached to the inner wall of the crushing lid 76. The liner 77 is V-shaped, and the center part thereof is projected in a convex shape. The crushing lid 76 of embodiment 2 has a plurality of the repulsive plate lining plates 77 attached to the inner wall thereof. The repulsive plate liner 77 is a hard material, and when abrasion or breakage occurs due to the crushing operation, it can be detached separately and replaced with a new repulsive plate liner 77.

[ method for crushing raw Material according to embodiment 2 ]

Next, a method of crushing the raw material in the bucket 80 of embodiment 2 will be described. In a state where the crushing lid 76 is opened, the raw material is scooped up by the front end portion of the bucket body 70 and taken into the scooping face portion 71 which is the bottom wall front portion side of the bucket body 70. At this time, the raw material is stopped by the weir 72 and is not sent to the crushing chamber 70 a. When the crushing lid 76 is closed, the bucket body 70 is tilted, and the raw material is fed into the crushing chamber 70a while passing over the weir 72. At this time, since the rotor shaft 9 rotates in the arrow Q direction, the hammer 74 strikes the material. The crushed material also collides with the repulsive plate liner 77 of the crushing cap 76. The raw materials are crushed little by the striking of the hammer 74, the collision of the repulsive plate liner 77, and the collision of the raw materials with each other, and the crushed materials are discharged from the grate 73 at the bottom of the bucket body 70.

After all the material on the shovel is crushed, the crushing lid 76 is opened, and the material is scooped up by the bucket body 70, and the above-described operation is repeated. Through such an operation, the material is crushed in the bucket body 70 little by little while adjusting the crushing amount, the crushed particle shape, and the particle size by the tilting operation of the bucket body 70, and therefore, the rotating operation of the rotor shaft 9 is stabilized. Further, the material and the crushed material are not caught between the bucket body 70 and the hammer 74, and are not prevented from being unrotatable. Further, since the crushing is performed while preventing scattering while avoiding overload generated during crushing, safety is good and the environment is good.

In addition to the impact, the raw material is repeatedly rubbed in the crushing chamber 70a while being mixed with other raw materials in accordance with the rotation of the rotor shaft 9, and is crushed. Thus, the crushing efficiency can be improved by repeating the squeezing operation while applying the striking force to the raw material. Further, the angle at which the raw material fed over the weir 72 contacts the hammer 74 is close to the theoretical value of the inlet feed angle of the impact crusher, and thus the raw material can be crushed efficiently.

Since this operation is performed by the two rotor driving devices 10, a large motor is not required, and a balanced crushing rotation can be obtained. The crushed material thus crushed to a predetermined particle size or less is discharged to the outside of the bucket body 70 through the grate 73 provided at the discharge port.

If the material cannot be crushed for some reason and remains in the bucket body 70, the bucket body 70 may be reversed to discharge the material or the coarsely crushed material from the opening 82 side.

In addition, the bucket 80 can be used by reversing 180 degrees. At this time, the repulsive plate liner 77 functions as a weir 72.

The embodiments of the present invention have been described above, but the present invention is not limited to these embodiments. Changes may be made without departing from the object and spirit of the invention. For example, the weir may be not limited to a triangular shape when viewed from the side, but may be a truncated cone, a square, a semicircle, a semi-ellipse, a plate, or the like. Further, these shapes may be combined. The shape of the weir is not limited, and the raw material may be prevented from being fed into the crushing chamber at different intervals when the bucket scoops the raw material, and the raw material may be fed into the crushing chamber in a predetermined amount over the weir when the bucket swings at an angle from the scooping angular position.

Claims (4)

1. A bucket with a crushing cover of a crusher comprises a bucket body (7, 70), a crushing cover (12, 76), a raw material feeding amount adjusting mechanism, hammers (11, 45, 74) and repulsion plates (16, 77);

the raw material feeding amount adjusting mechanism is provided on the bucket body (7, 70) and/or the crushing cover (12, 76), and feeds the raw material scooped up by the bucket body (7, 70) into the crushing chamber (7a, 70a) by a predetermined amount one by one;

the hammers (11, 45, 74) are provided on the outer periphery of a rotor that is driven to rotate by a power drive mechanism, and strike and crush the raw material fed into the crushing chamber (7a, 70 a);

the repulsion plate (16, 77) is provided on the crushing cover (12, 76) and collides with the raw material that has been struck by the hammer (11, 45, 74);

characterized in that the crushing cover (12, 76) can be opened and closed relative to the bucket body,

the hammer (11, 45, 74) has an opening (31) and a notch (30), the opening (31) is opened outwards, the notch (30) is communicated with the opening (31), and a bearing (29) for supporting the hammer (11, 45, 74) when the rotor rotates is formed;

comprises a hammer swing pin (24), crushing tooth pressing members (35, 55, 65), and fixing mechanisms (43, 60); the hammer swing pin (24) is used for inserting the bearing (29) through the opening part (31) during assembly to support the hammer (11, 45, 74) in a swinging mode; the crushing tooth pressing member (35, 55, 65) is inserted into the opening (31) and fixed to the hammer (11, 45, 74); the fixing mechanism (43, 60) is used for fixing the hammer (11, 45, 74) and the crushing tooth pressing member (35, 55, 65) to each other.

2. A bucket with a crushing cover for a crusher as claimed in claim 1, wherein said material feed amount adjusting mechanism is a weir (72) provided on a bottom wall (71) of said bucket body (70).

3. The bucket with a crushing cover of a crusher according to claim 1, wherein there are provided detachable interconnection means in which engagement means (32) are formed at both ends of the opening portion (31), and engagement receiving means (38) connected to the engagement means (32) are formed in the crushing tooth pressing member (35).

4. A bucket with a crushing cover for a crusher as claimed in claim 1, characterized in that two crushing tooth pressing members (55, 65) are disposed facing each other;

the crusher is further provided with a detachable connection mechanism, wherein an engagement mechanism (50) is formed at two positions of the notch (30) in the radial direction of the bearing (29), and engaged mechanisms (58, 68) connected with the engagement mechanism (50) are formed on the crushing tooth pressing members (55, 65).