JPH04133518U - Rod protector for crushing cutting machine - Google Patents

Abstract

(57) [Summary] [Purpose] A crushing method that has two opposing arms, at least one of which is attached to a frame and is rotatable, and which rotates the arms by expanding and contracting the cylinder to crush and cut objects caught between the arms. Protects the cylinder rod of the cutting machine from fragments and dust of the cut object. [Structure] A protective cover is placed over the cylinder rod portion of the crushing and cutting machine as described above, and has a cross-sectional shape that is closed in three directions: left and right side surfaces and the top surface, with only the side plate portions protruding forward in the front portion; This protective cover has a front end rotatably connected with a pin near the tip of the rotating arm, and a rear part connected with a pin to one end of a link member having pin holes formed through each end, and the other end of the link member. By connecting a pin to the front part of the frame or cylinder, it is moved closer to the rod part in conjunction with the rotating arm.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention rotates the arm by expanding and contracting a cylinder operated by fluid pressure to move objects. The piston of the cylinder that rotates the arm in crushing and cutting machines that perform crushing and cutting. This relates to a protective cover for the connecting rod.

0002

[Conventional technology]

The material to be shredded is held between opposing arms and the material is shredded by expanding and contracting a cylinder operated by fluid pressure. In crushing and cutting machines that crush and cut objects by rotating the arm, When crushing and cutting, dust flies up from the object to be crushed, or fragments of the object to be crushed and cut. The impact of the crushing and cutting may scatter dirt and deposits, causing damage to the piston rod of the arm rotation cylinder. may stick to or collide with the piston rod, damage the piston rod, or damage the cylinder seal. They often get caught up in the piston rod and damage the piston rod and seals. Also, when scraping the object to be crushed and cut, objects may hit the piston rod, causing the piston rod to There is a risk of damaging the head.

0003 In order to prevent such problems and protect the piston rod, a known bellows type rod is used. Install this between the piston rod neck and cylinder neck using a head cover. There are known methods of attaching and protecting the rod from foreign objects.

0004 Or as another method, for example, 1990 Utility Model Application Publication No. 36604 There is a method shown in (see FIGS. 4 and 5).

[0005] However, the protection method using bellows does not work as the volume inside the bellows changes as the piston expands and contracts. In order to prevent the bellows from expanding and contracting in the radial direction due to the air inside the bellows, It is customary to provide a communication hole or an appropriate gap for communication between the inside and the outside.

[0006] However, surrounding dust gets mixed up with the air flowing in and out through these communication holes or gaps. This dust accumulates inside and attaches to the piston rod, causing the piston rod to become damaged as described above. There are problems such as causing damage to the stone rod and seal. In addition, in this method, the bellows does not have sufficient strength and rigidity, so it is difficult to scrape the material to be crushed. There is also the problem of deformation and damage due to being pushed during work.

[0007] On the other hand, the method disclosed in Utility Model Application Publication No. 36604 of 1990 is This was devised to avoid problems with the system, and is a part of a long flat protective cover. Attach the end to the piston rod of the arm rotation cylinder, and attach it to this cylinder part. This protective cover is guided by a guide means attached to the piston rod, and the expansion and contraction movements of the piston rod are The protective cover slides back and forth in cooperation with the rotating arm of the extended portion of the piston rod. It protects the side opposite the room.

[0008] However, this method does not allow debris or dust to get caught in the protective cover guide. or the object to be crushed collides with the protective cover or guide, deforming them and causing the guide to The sliding resistance of the piston rod increases and the driving force becomes excessive, causing the protective cover to become attached to the piston rod. There are problems such as breakage at the attachment part and early damage to the guide part.

[0009] In addition, the method illustrated in the above-mentioned 1990 Utility Model Application Publication No. 36604 Since the area that covers the stone rod is only on one side, there is no possibility of foreign objects or dust flying from both sides. A sufficient protective effect cannot be obtained against scattering or scraping of objects to be crushed and cut.

0010

[Problem to be solved]

This invention rotates the arm by expanding and contracting a cylinder operated by fluid pressure to crush objects. In a crushing cutting machine that crushes and cuts, there may be collisions with objects to be crushed or scattered dust. The present invention provides a method for protecting piston rods from

[0011]

[Means for solution]

To solve the above problem, we installed a frame and an overhang from the frame. and two opposing arms, with at least one proximal end of the arm being connected to the frame. The rotatable arm is rotatably attached to the frame by a pin, and the rotatable arm is driven by fluid pressure. The object is rotated by the expansion and contraction of the operating cylinder and inserted between the opposing arms. In crushing and cutting machines that crush or cut crushed materials, the lower side opens in one direction and both the left and right sides open. The cross-sectional shape is closed in three directions (front and top), and only the side plates of the front part protrude forward. The shaped protective cover protects the piston rod part of the cylinder when the piston rod is extended. from the side opposite to the rotating arm, and the front end of the protective cover The piston rod of the cylinder and the rotating arm are rotatably connected with a pin near the connection part. Connect the rear part to one end of the link member with pin holes formed through each end and the pin connection. At the same time, the other end of the link member is connected to the frame with a pin.

0012 In addition, as another solution, in the crushing and cutting machine having the above configuration, The protective cover of the rotating arm rotates when the piston rod of the cylinder is extended. Cover the rod part from the side opposite to the rotating arm, and the protective cover covers the front end part. is rotated by a pin near the connection between the piston rod of the cylinder and the rotating arm. One end of a link member that is freely connected and has a pin hole penetrated at both ends of the rear part. and connect the other end of the link member with the cylinder near the front of the cylinder. Connect the pin to.

[0013]

[Effect]

In a crushing cutting machine equipped with a rod protector configured as described above, the arc When the piston rod of the arm rotation cylinder is pushed forward, the rotation arm The damaged object rotates forward and the tips of both arms approach each other and are inserted between the two arms. The object to be crushed is crushed or cut by pressure, but at this time a pin is attached to the tip of the rotating arm. The rotatably connected protective cover also moves forward together with the rotating arm.

[0014] By the way, the rear part of this protective cover is connected to the frame or cylinder via a link member. The link member connected to the rear part of the protective cover is Centering around the pin connected to the frame or cylinder by forward movement of the protective cover Rotate forward. As this link member rotates forward, the rear part of the protective cover is placed above the piston rod. Approach the piston rod from the surface and cover it to protect the piston rod. protect

[0015] Also, when the piston rod of the arm rotation cylinder is pulled back, The rotating arm rotates backwards, and the tips of both arms separate from each other and open. The protective cover, which is rotatably connected to the tip of the rotating arm with a pin, is also attached to the rotating arm. move backwards.

[0016] When the protective cover moves backward, the parts connected to the rear part of the protective cover The link member rotates backwards around a pin connected to the frame or cylinder. Ru. As this link member rotates backward, it is protected using the connecting pin in front of the protective cover as a fulcrum. The rear part of the cover is lifted and slightly lifted from the piston rod, and the cover is protected. The front edge of the cover top member is separated from the arm, and the front edge of the protective cover and the top of the arm tip are separated from the arm. An opening is formed between the two.

[0017] Due to the above operation, the rod protector of the present invention can be used to protect the piston rod of a crushing cutting machine. When the arm extends and the rotating arm crushes and cuts the crushed and cut object, the Protects the extended piston rod from debris and dust, and protects the piston rod from retraction. When opening the arm, lift the rear part of the protective cover slightly and remove the piston rod. Foreign matter that has entered the gap between the protective cover and the piston rod by increasing the gap between the protective cover and the piston rod. can be easily removed from the opening at the front of the protective cover and the gaps on both sides of the rear part.

[0018]

【Example】

Figure 1 shows a crusher equipped with a rod protector according to claim 1 of the registered invention. FIG. 2 shows a rod protector according to claim 2 of the registered invention. Fig. 3 shows an embodiment in which a crusher is equipped with the FIG.

[0019] Embodiments of the present invention will be described below with reference to FIGS. 1 to 3. In the figure, C is a known general crusher, and a bracket B is attached to the top of the frame 1. Two pin holes H are formed through the upper part of this bracket B, and the hydraulic shock The tip of arm A of a self-propelled trolley such as a bell, and the bucket attached to the tip of arm A. It is attached to the link mechanism L by two mounting pins P, and the link mechanism L The crusher C can be swung by operation. Although not shown, there are also pipes and holes attached from the truck side along the arm. Operating oil pressure is supplied to the cylinder 6 of the crusher C by a source or the like.

[0020] The crusher C is attached to frame 1 and extends forward from the bottom of this frame. the fixed arm 2 and the base end against the frame 1 near the base of the fixed arm 2. It has a rotating arm 3 rotatably connected by a frame pin 4, and this rotating A cylinder 6 operated by fluid pressure is arranged between the tip of the arm 3 and the upper part of the frame 1. and connect the tip of the piston rod 8 of this cylinder 6 and the cylinder part with an arm pin. 9 and the cylinder pin 7, and the rotation arm is rotated by the expansion and contraction of the piston rod 8. Rotate the arm 3 to crush the object inserted between the fixed arm 2 and the rotating arm 3. It is configured to crush with crushing teeth 5, 5' attached to opposite surfaces of both arms. It is.

[0021] On the other hand, in FIGS. 1 and 2, when the piston rod 8 of the cylinder 6 is extended, A protective cover is placed to cover this piston rod section from the upper side opposite to the rotating arm 3. A bar 10 is placed over it.

[0022] As shown in Fig. 3, this protective cover 10 opens in one direction on the bottom side and on both left and right sides and the top. The cross-sectional shape is closed on three sides, and the front part has only the side plates protruding forward. A pin hole 11 is formed through the projecting front end on both sides. Align the hole 11 with the pin hole 11' formed at the appropriate location near the tip of the rotating arm 3, and It is rotatably connected with a mounting pin 11".

[0023] In addition, pin holes 13 are formed through both sides of the rear part of the protective cover 10, and the pin holes 13 One end of the link member 12, which has a pin hole 13' formed through the pin hole 13 at both ends, is inserted into the pin hole 13. Attach and connect the rear link pin 13'', and connect the link part as shown in Figure 1. Align the pin hole 13' at the other end of the material 12 with the pin hole 14 formed through the frame 1. Connect with link fulcrum pin 14''.

[0024] Alternatively, as another method, the other end of the link member 12 is not connected to the frame 1, and the As shown in the figure, a pin hole 13' at the other end of the link member 12 is formed in the front part of the cylinder 6. Connect with the link fulcrum pin 15'' in alignment with the pin hole 15.

[0025] Next, we will explain the operation of the protective cover 10 attached to the crusher C with the above configuration. I will clarify. Extend the piston rod 8 of the cylinder 6 and rotate the rotating arm 3 forward to crush the object In this process, the tip of the rotating arm 3 moves forward together with the protective cover 10, A link member 12 connected to the rear part of the protective cover 10 by a rear link pin 13'' is connected to the rear part of the protective cover 10. Link fulcrum pin 14" or 15" connected to frame 1 or cylinder 6 Rotate forward around the center.

[0026] With this forward rotation of the link member 12, the rear part of the protective cover 10 rotates around the piston. Approach the piston rod 8 from the upper side of the rod 8, cover it, and insert the piston. In addition to protecting the rod 8, the front edge S of the upper surface member of the protective cover 10 is located at the tip of the arm 3. Close the top surface of the end to narrow the front opening to prevent foreign matter from entering.

[0027] The above explanation of the rotating arm in the closed state shows the rotating arm, protective cover, and link parts. Regarding materials, the state is shown by solid lines and broken lines in FIGS. 1 and 2.

[0028] Also, the piston rod 6 is pulled rearward and the rotating arm 3 rotates rearward, causing both In the process where the tips of the arms separate from each other and open, the tips of the rotating arms 3 The protective cover 10, which is rotatably connected with the front mounting pin 11'', is also attached to the rotating arm 3. move backwards.

[0029] When the protective cover 10 moves backward, the rear part of the protective cover 10 The connected link member 12 is a link support connected to the frame 1 or the cylinder 6. It rotates backward around the dot pin 14'' or 15''.

[0030] With this backward rotation of the link member 12, the front mounting pin 11" of the protective cover 10 The rear part T of the protective cover 10 is lifted up using the The gap between the rear side member of the protective cover 10 and the piston rod 8 is slightly raised. At the same time, the front edge S of the top member of the protective cover separates from the arm, and the protective cover An opening is formed between the front part of the rotating arm 10 and the upper surface of the rotating arm 3.

[0031] The above explanation shows the rotating arm open, the rotating arm, protective cover, and link parts. Regarding the material, the state is indicated by a chain double-dashed line in FIGS. 1 and 2.

[0032] In addition, in the description of the above embodiment, the rod protector of the present invention has two arms. When applied to a crusher with a structure in which one arm is a fixed arm and the other arm is a rotating arm. Although described, both can be applied to rotary arm crushers regardless of this.

[0033] Furthermore, in the above embodiment, the rod protector of the present invention was attached to the crusher. Although I have explained this case using an example, here is an illustration of a structure with almost the same structure as this. It can also be applied to cutting machines that do not have

[0034]

【effect】

With the mechanism described above, the rod protector of the present invention can be used to protect the piston rod of the crusher. When the arm is extended and the rotating arm crushes the object to be crushed, the protective cover protects the piston rod. The fragments of the material to be crushed collide with the extended piston rod. In addition to preventing dust from adhering to the piston rod, This has the effect of improving the durability of the cylinder.

[0035] Also, when retracting the piston rod to open the arm, be sure to close the rear part of the protective cover. Slightly lift the protective cover and piston rod to increase the gap between the protective cover and the piston rod. Foreign matter that has entered the gap between the tongue rod and the tongue rod may cause damage to both the front opening and rear part of the protective cover. This has the effect of being easily removed from the side gap.

[0036] In addition, the rod protector of this invention does not have a sliding guide mechanism, so it Foreign matter may get stuck in the sliding parts or the gap between the protective cover and the piston rod, causing excessive damage. The protective cover may be deformed by creating resistance or by colliding with the object to be crushed and cut. This may cause excessive sliding resistance, which may lead to premature removal of the protective cover or guide. This avoids problems such as wear and tear.

[Brief explanation of drawings]

FIG. 1 is a side view of a crusher equipped with a rod protector according to an embodiment according to claim 1 of the present invention.

FIG. 2 is a side view of a crusher equipped with a rod protector according to an embodiment according to claim 2 of the present invention.

FIG. 3 is a perspective view of only the protective cover of the embodiment of FIG. 1;

[Figure 4] Side view of a crusher equipped with a conventional piston rod protection device

[Figure 5] Partially longitudinal front view of Figure 4

[Explanation of symbols]

1 frame 2 Fixed arm 3 Rotating arm 6 cylinders 10 Protective cover 12 Link member 11” front mounting pin 13” rear link pin 14” link fulcrum pin 15” link fulcrum pin

Claims (2)

[Scope of utility model registration request] 1. A device comprising a frame and two opposing arms attached to project from the frame, the base end of at least one of the arms being rotatably pivoted to the frame by a pin. , a crushing and cutting machine that crushes or cuts an object to be crushed inserted between the opposing arms by rotating the rotatable arm by expanding and contracting a cylinder operated by fluid pressure, in which one direction of the lower side is A protective cover has a cross-sectional shape that is closed in three directions: the left and right sides and the top surface, and the front part has a protective cover with only both side plates protruding forward. The protective cover has a front end rotatably connected to the piston rod of the cylinder and the rotating arm near the connection part with a pin, and a rear end formed with pin holes at both ends. A rod protector for a crushing and cutting machine, characterized in that one end of a link member is connected with a pin, and the other end of the link member is connected with a pin to the frame. 2. In the crushing and cutting machine according to claim 1, the protective cover having the shape according to claim 1 covers the piston rod portion of the rotating arm rotation cylinder when the piston rod is extended from the side opposite to the rotating arm. The protective cover has a link member whose front end is rotatably connected with a pin near the connecting portion between the piston rod of the cylinder and the rotating arm, and whose rear end is formed with pin holes passing through each end. A rod protector for a crushing and cutting machine, characterized in that one end of the link member is connected with a pin, and the other end of the link member is connected with a pin near the front of the cylinder.