JPH08295B2 - Automatic overlay welding equipment for movable crushing element of rotary crusher - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overlay welding apparatus for a crushing element used in a rotary crusher, and more particularly, to a worn surface of a wearable movable crushing element with the worn movable crushing element being mounted inside the rotary crusher. The present invention relates to a build-up welding device for a movable crushing element of a rotary crusher that performs overlay build-up welding sequentially for repair.

[0002]

2. Description of the Related Art A mantle and a cone cave, which are a set of crushing elements consisting of movable and fixed crushing elements, are used in a crushing chamber such as a rotary crusher, for example, a gyre trellis crusher. As the movable crushing element passes through the crushing chamber, the material is crushed mainly by the action of compressive force between the fixed crushing element and the fixed crushing element.
By continuing the crushing operation of the material by the operation of the rotary crusher, the wear of the crushing element progresses, and especially in the surface part where the crushing stress on the mantle acts higher than other surface parts. Wear is significantly increased. Worn
Since the operation of the rotary crusher using the movable crushing element causes deterioration of crushing performance, replacement with a new movable crushing element and repair are performed.

However, exchanging worn parts at the site where the crushing element is installed requires a lot of time including disassembly and assembly, and therefore the operation rate is lowered, and especially the mantle has an acute angle. Yes attached to the main shaft
If the dynamic fracturing element wears, disassembling the mantle can be difficult. For this reason, it is known that the mantle of the rotary crusher is divided into a vertical direction and a circumferential direction and a wedge is driven into the contact surface of the mantle to assemble (Japanese Utility Model Publication No. 60-165039). Gazette).

[0004]

However, the above-mentioned conventional structure is effective in that the movable crushing element, the mantle, etc. worn by the operation of the rotary crusher can be replaced with a new one, but the replacement at the installation site. At the time of disassembling the movable crushing element, moving and exchanging to the outside of the rotary crusher, and again,
Since it requires a lot of working time and labor for moving and assembling into the rotary crushing machine, it is not preferable.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to successively perform overlay welding of a worn surface while a worn movable crushing element is mounted inside a rotary crusher. Can be performed to form a new fracture surface.
To obtain an automatic overlay welding device for a dynamic crushing element.

[0006]

According to the present invention, there is provided an automatic build-up welding apparatus for forming a new crushing surface by sequential build-up welding of wear surfaces of movable crushing elements of a rotary crusher, wherein moving a rotating means for rotating the movable crushing element provided on the spindle Te at the top of the movable crushing elements attached to the supported main shaft in the crusher bearings, the lifting member having a gripping portion of the welding wire an elevating means for moving along the longitudinal direction of the crushing elements, with is detachably mounted on the crushing chamber of gyrating crusher respectively, the welding wire is connected to a welding machine
Cage, the output speed of the drive source of the rotating means and the welding wire
When the tip of the yarn moves in the longitudinal direction of the movable crushing element,
Provided with a controller for controlling the output speed of the drive device of the descending means
It is a thing. Further, the present invention is directed to the lifting member of the lifting means.
The ends are in rolling contact on the surface of the movable crushing element and are welded
The gap between the tip of the wire and the movable crushing element to be overlay welded is uniform.
A guide roller that is constantly held is provided.

[0007]

With the above construction, the rotating means and the elevating means are installed in the crushing chamber to connect the welding wire to the welding machine, the crushing element worn by the rotating means is rotated, and the welding wire is moved by the elevating means. The crushing element is moved along the longitudinal direction to position the weld overlay, and the wear surface is sequentially weld welded by feeding the welding wire to form a new predetermined crush surface and then It is withdrawn desorbed and motion means and the lifting means from the crushing chamber, thus worn allowed
The overlay welding can be performed while the dynamic crushing element is mounted inside the rotary crusher.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 3, reference numeral 10 denotes a rotary crusher, for example, a gyre trellis crusher, and a crushing chamber 16 is provided with a set of crushing elements consisting of a movable crushing element 12 and a fixed crushing element 14, a mantle and a cone cave. The movable crushing element 12 is mounted on a main shaft (not shown).
The main shaft is the upper part 13 and the lower part 1 of the movable fracturing element 12.
5, the movable crushing element 12 is rotatably driven by a drive device (not shown) so that the material is supplied into the crushing chamber 16 and the required crushing clearance is maintained. Are compressed and crushed between the movable crushing element 12 and the fixed crushing element 14 to form a crushed product, which is discharged from the rotary crusher 10.

As the material is continuously crushed by the operation of the rotary crushing machine 10, the crushing surface of the movable crushing element 12 becomes worn, and if the wear further increases, the crushing performance is deteriorated. Therefore, the movable crushing element 12 is repaired by forming a new crushing surface by overlay welding. That is, in the upper part 13 of the movable crushing element 12.
The rotating means 18 is attached to the main shaft using a support material (not shown), and is mounted in the crushing chamber 16. The rotating means 18 is connected to a drive source 22 having a chain wheel 23 and a split chain wheel 20 attached to the upper portion 13 by a chain 21.
The rotation of the movable crushing element 12 causes the movable crushing element 12 to be pivotally supported by the bearing at a required welding speed.

Reference numeral 24 indicates an elevating means, which is mounted on the frame 40 and the frame 40 is suspended along the crushing chamber 16. An adjustment base 42 is provided on the frame 40, and the adjustment base 42 is attached to the casing pipe 30 with a member (not shown). As shown in FIG.
An elevating member 32 having a polygonal cross section is inserted into the casing pipe 30, and the elevating member 32 is connected to a connecting tool 37.
The chain 28a is fastened using a screw member 39, and the upper end and the lower end of the connection tool 37 are connected to form a chain 28a, which is formed as a part of the movement path. As shown in FIG. 2, flanges 29 and 29a are attached to the top and bottom of the casing pipe 30, respectively, and are provided with openings for allowing the lifting member 32 and the chain 28a to be lifted and lowered. Further, the support base 31 of the main chain wheel 26 and the driving device 25 are attached to the top surface of the flange 29 via a plate material, and the support base 31a of the driven chain wheel 27 is also attached to the top surface of the flange 29a. In this way, in the elevating means 24, the main chain wheel 2 is driven by the reversible rotation of the drive device 25.
The rotation of 6 is transmitted to the chains 28, 28a and the driven chain wheel 27, and the elevating member 32 fastened to the connector 37 penetrates the inside of the casing pipe 24 and is elevated. Chain 2
Reference numeral 8 indicates a portion that is moving outside the casing pipe 24. An end portion 33 of the elevating member 32 has a circular cross section, is provided with a gripping portion 34 for a welding wire 46, and is provided with a guide roller 36 via a mounting base 35.

A pin member 41 is provided at one end of the adjusting table 42 so that the inclination of the elevating means 24 can be variably adjusted by moving an adjusting tool (not shown), and moreover, the guide roller 36 is provided on the surface of the movable crushing element 12. by being in rolling contact on, the variable being the tip and the overlaying metal welding wire 46
The gap between the surface of the dynamic crushing element 12 is kept constant, and uniform overlay welding can be performed. Wire feeder 4
Numeral 8 feeds the welding wire 46 wound around the wire reel at a constant speed, the above-mentioned build-up welding is performed at the tip of the welding wire 46, and the wire feeding device 48 is connected to the welding machine 66 via the welding cable 69. Connected.

As the overlay welding method, a non-gas shielded arc welding method is suitable, and since solid wire or flux-cored welding wire is used for welding in the atmosphere of the installation site without supplying a shielding gas, strong wind is generated at the installation site. Even if it receives, overlaying welding of the crushing element 12 is performed without any trouble, and it is possible to contribute to quality improvement. Reference numerals 50 and 52 respectively indicate limit switches, which correspond to the upper and lower limits of the position of the welding wire 46 moved along the longitudinal direction of the movable crushing element 12 by the elevating means 24, respectively, and via the conductors 56 and 58. Each of them is connected to a controller 54, and overlay welding is performed between the upper limit and the lower limit.
The mounting positions of the limit switches 50 and 52 can be changed as needed. Reference numeral 70 denotes a terminal joint, is attached to a side portion of the casing pipe 30 of the elevating means 24, is in contact with the surface of the movable crushing element 12, and is connected to a welding machine 66 by a welding cable 68. A welding circuit is formed with the tip of the. 64,
Reference numeral 65 denotes the power sources of the controller 54 and the welding machine 66, respectively.

Reference numeral 60 denotes a conductor of the drive source 22 of the rotating means 18 and is connected to the controller 54. The output rotation number of the drive source 22 is controlled by the controller 54 to a required number of revolutions.
At this time, the rotational speed is changed so that the welding speed at the overlay welding portion of the movable crushing element 12 is within a predetermined range. Further, the driving device 25 of the elevating means 24 is connected to the controller 54 by the conductive wire 62, and the movable crushing element 1 is
Lifting member 32 with a moving speed corresponding to the welding speed of 2
The controller 54 controls the driving device 2 so that the tip of the welding wire 46 is moved in the longitudinal direction by the grip portion 34 of the
The output speed of 5 is controlled.

The above overlay welding method will be described in more detail. The worn movable crushing element 12 has an irregular wear state such as the wear surface 12a, particularly wear depth and wear length, and the movable crush element is used to form a new predetermined crush surface by overlay welding. The number of welding layers may be changed along the longitudinal direction of 12. In such a case, first, in the worn movable crushing element 12, the wear state of the wear surface 12a is measured by using a measuring means, and the lubricating system of the rotary crusher 10 is operated to ensure reliable lubrication. After that, the movable crushing element 12 is driven by the driving source 22 of the rotating means 18.
Is rotated while being supported by bearings via the main shaft, and the lifting / lowering member 32 of the lifting / lowering means 24 moves up and down.
The guide roller 36 is movable by the operation in 4.
Aligned to contact the surface of the fracturing element 12 and after the tip of the welding wire 46 is positioned at the welding start point,
The welding is started by the welding machine 66, and in combination with the rotation of the movable crushing element 12 and the rising of the tip of the welding wire 46, the spiral build-up welding progresses on the surface of the wear surface 12a and reaches the predetermined position. Then, the operation signal of the limit switch 50 is output, the operations of the elevating means 24 and the welding machine 65 are stopped, and the overlay welding of the first layer is completed. Then, depending on the wear state, the welding start point of the second layer and to determine the end point, after adjusting the operating position of the limit switch 52, 50, lowers the elevator member 32 of the lifting means 24 again, Guy
After the position of the drag roller 36 is adjusted so as to contact with the surface and the tip of the welding wire 46 is positioned at the welding start point of the second layer, the overlay welding of the second layer is performed in the same manner as described above. Subsequently, the overlay welding of the third layer and the subsequent layers is performed as needed. Movable crushing element 1 during the above-mentioned sequential overlay welding
The surface of 2 is cooled by a cooling device (not shown) so that the temperature of the movable crushing element 12 is prevented from rising.
Thus, the worn surface 12a of the worn movable crushing element 12 is repeatedly used for the crushing operation of the material again after the completion of the overlay welding to form a new predetermined crushing surface.

Next, the operation will be described. Crushing operation of the material by the operation of a gyratory crusher 10 is performed, progress wear of the movable crushing elements 12, the wear surface 12a in a state of mounting the wear movable crushing elements 12 inside gyratory crusher 10 In order to perform the overlay welding in order and form a new crushing surface, the turning means 18 and the elevating means 24 are mounted in the crushing chamber 16 while the rotary crusher 10 is stopped, Member 3
The welding wire 46 gripped by the grip part 34 of the second welding machine 6
6, the movable crushing element 12 worn by the driving of the rotating means 18 is rotated while being pivotally supported by the bearing of the rotary crusher 10 via the main shaft , and the elevating means 24 is also provided. welding follower by the position adjustment of the guide rollers 36 of the lift member 32 of the
Table of movable crushing element 12 that is welded to the tip of ear 46 by overlay welding
The gap between the wear surface 12 and the welding wire 46 is moved along the longitudinal direction of the movable crushing element 12 while maintaining a constant gap.
For a, multilayer welding by overlay welding is sequentially performed using the welding wire 46, and a new predetermined crushed surface is formed. Then, the rotating means 18 and the elevating means 24 are taken out from the crushing chamber 16, the movable crushing element 12 is used as it is in the rotary crushing machine 10, and the material crushing operation is repeated.

[0016]

As described above, according to the present invention, the buildup welding of the wear surface is sequentially performed at the installation site while the worn movable crushing element of the rotary crusher is mounted inside the rotary crusher. Since a new crushing surface is formed and the material is crushed again, much work time and labor are required for disassembling the movable crushing element, moving the rotary crusher to the outside, repairing and assembling. In addition to being significantly improved, the welding conditions can be sequentially selected by selecting the optimum welding conditions corresponding to the wear state of the movable crushing element, which can contribute to quality improvement.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing the elevating means of FIG.

FIG. 3 is an enlarged cross-sectional view showing a main part of FIG.

[Explanation of symbols]

10 Rotational crusher 12 Movable crushing element 12a Wear surface 14 Fixed crushing element 16 Crushing chamber 18 Rotating means 22 Drive source 24 Elevating means 25 Driving device 32 Elevating member 34 Grip 36 Guide roller 46 Welding wire 54 Controller 66 Welding machine

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Toru Nakanishi 1780 Uetakano, Yachiyo-shi, Chiba Kawasaki Heavy Industries, Ltd. Yachiyo factory (72) Inventor Tetsuo Kago, 1780 Uetakano, Yachiyo-shi, Chiba Kawasaki Heavy Industries Ltd. Company Yachiyo Factory (56) Reference JP-A-61-46372 (JP, A)

Claims (2)

[Claims] 1. An automatic build-up welding apparatus for forming a new crush surface by sequential build-up welding of wear surfaces of movable crushing elements of a rotary crusher, the main shaft being supported by bearings of the rotary crusher.
Longitudinal direction of the movable crushing elements lifting member comprising a rotating means, the grip portion of the welding wire for rotating the movable broken <br/> crushing element provided on the spindle Te at the top of the movable crushing elements attached to And the lifting means for moving to the welding machine are detachably mounted in the crushing chamber of the rotary crusher, respectively, and the welding wire is connected to the welding machine.
And the tip of the welding wire moves in the longitudinal direction of the movable crushing element.
Controls the output speed of the driving device of the lifting means when moving.
An automatic build-up welding device for a movable crushing element of a rotary crusher , which is provided with a controller . 2. A movable breaker is provided at the end of the lifting member of the lifting means.
Rolling contact on the surface of the crushing element, welding tip of welding wire and overlay
A gas that maintains a constant gap with the movable crushing element to be welded.
An id roller is provided, according to claim 1,
Automatic overlay welding equipment for movable crushing elements of the mounted rotary crusher.