JPH0929641A - Moving shot blasting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily confirm a projection density by detecting a running speed of a running unit, detecting a quantity of projection of a material to be projected, computing the projection density on the basis of results of both the detections, and displaying the measured value in a display means. SOLUTION: A projection density measuring unit M is provided with a running speed detecting means 50 for detecting the running speed of a rear side running unit and a projection quantity detecting means 51 for detecting the quantity of projection of the material to be projected. A projection density computing means 52 computes a projection density to a grinding surface on the basis of results of the detections of these detecting means 50, 51, and controls a running motor 17 and a gate opening/closing quantity control motor 40. The projection density computed by the projection density computing means 52 is displayed in a display means 53. The running speed detecting means 50 computes the running speed on the basis of a rotating speed of the running motor 17 detected by a tachometer, and the projection quantity detecting means 51 computes the quantity of projection of the material to be projected on the basis of the current value, which is detected by a current meter, supplied to a vane driving motor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile shot blasting device.

[0002]

2. Description of the Related Art Conventionally, as one form of a mobile shot blasting apparatus, a traveling section for self-propelled movement, a projection / polishing section for projecting and blasting projection material onto a blasting surface, and the same projection There are some which are provided with a collecting / separating section for collecting and separating the blast material projected from the blasting section and the separated matter from the blasting surface.

With such a shot blasting apparatus, for example, when performing rust removal work on an iron plate, the projection density of the projection material is measured before and during the work.

This is to measure whether or not the projection material is projected at a projection density such that the polished surface finish state is determined by the Swedish standard (SIS standard), and the running section is stopped. In the above, the projection material is projected onto the saucer for 1 minute, the projected weight is measured, and the value obtained by dividing the measured value by the working traveling speed is, for example, 105 kg / m.
Although will be adapted to be ^two or more standards, is less than the measured value 105Kgm ^2, to increase the projection amount, or by slow working speed, the measurement value 105
The work is to be started after the adjustment is made to be at least kgm ² .

[0005]

However, in the method of measuring the projection density of the projection material as described above, it is necessary to collect the projected projection material one by one and measure the weight, which is troublesome and the SIS is required. If the measurement value of the projection density does not conform to the standard, there is the trouble that it must be corrected, and further, since such measurement work must be performed before and during the polishing work, The cleaning work efficiency was poor.

[0006]

Therefore, in the present invention, a traveling section for self-propelling, a projection / polishing section for projecting and sweeping a projection material onto a polishing surface, and a projection / polishing section are provided in the present invention. A mobile shot blasting device comprising a collecting / separating unit that collects and separates the blast material projected from the sweeping unit and the debris from the scouring and cleaning surface. The projection density measuring unit is based on the traveling speed detecting means for detecting the traveling speed of the traveling portion, the projection amount detecting means for detecting the projection amount of the projection material, and the detection result from the traveling speed detecting means and the projection amount detecting means. A mobile shot blasting device comprising: a projection density calculating means for calculating the projection density on the scouring surface; and a display means for displaying the projection density calculated by the projection density calculating means as a measurement value. To provide .

Further, according to the present invention, the projection density measuring section connects the input means for inputting the set value of the projection density, the input means and the projection density calculating means to the input side, and travels to the output side. And a control means to which drive means of the unit is connected, the control means compares the set value of the projection density input from the input means with the measured value of the projection density calculated by the projection density calculation means. And that at least one of the traveling speed of the traveling unit and the projection amount of the projection material by the projection / polishing unit can be controlled so that the measured value of the projection density becomes equal to the set value, and the output side of the control means. It is also characterized in that the printing means is connected to the printing means and the measured value of the projection density can be printed by the printing means at regular intervals.

[0008]

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

[0009] A shown in FIG. 1 is a mobile shot blasting apparatus according to the present invention, B is a recovery vehicle for recovering the polishing dust collected by the shot blasting apparatus A, and a loading platform of the recovery vehicle B. A generator 1 and a dust collector 2 are loaded in the container, and the shot blasting device A is connected to the dust collector 2 via a dust collecting hose 3 so as to communicate therewith. C is a cleaning surface, and D is an operator.

The mobile shot blasting apparatus A is shown in FIGS.
As shown in FIG. 3, a device main body 12 is provided between the front side traveling unit 10 and the rear side traveling unit 11, and the front side traveling unit 10 serves as driven wheels on the left and right side portions of the front side traveling frame 13, respectively. Front wheels 14, 14 of the rear side traveling section 11 are attached to the rear side traveling frame 15 as rear wheels 16 as driving wheels.
A traveling motor 17 is attached to the rear portion of the rear traveling frame 15, and an output shaft 17a of the traveling motor 17 and an axle 16 of the rear wheels 16 are mounted.
A transmission mechanism 18 is provided between a and a, and a handle strut 19 is erected in the rear part of the rear traveling frame 15 so as to extend rearward and upward, and a handle 20 is attached to the upper end of the handle strut 19.

As shown in FIGS. 2 and 3, the apparatus main body 12 is interposed between the front traveling frame 13 and the rear traveling frame 15 via front and rear hydraulic cylinders 21 and 22 so that the elevation position can be adjusted. The apparatus main body 12 is provided with a projection / polishing unit 23 for projecting and blasting a projection material such as an iron ball onto the polishing surface C, and a projection material and a projection material projected by the projection / polishing unit 23. A collecting / separating unit 24 is provided for collecting and separating the abrasive dust as the separated matter from the sweep surface C.

Then, the projection / polishing / cleaning unit 23 is provided with
As shown in Fig. 2, a pair of left and right projection vanes 26, 26 are arranged in the vane case 25, and the vane shafts 27, 2 of each projection vane 26, 26 are arranged.
7 and vane bearings 28, 28 on which vane drive motors 29, 2
9 is mounted on the output shaft 29 of each vane drive motor 29,29.
Transmission mechanisms 31 and 31 are provided between a and 29a and the input shafts 28a and 28a of the vane bearings 28 and 28, respectively. 31a and 31b are pulleys and 31
c is a transmission belt.

Moreover, as shown in FIG. 2, the projection guide cylinder 32 is extended rearward and downward from the lower end of the vane casing 25, and the lower end of the projection guide cylinder 32 slides on the polishing surface C. The cleaning and cleaning case 33 having a lower opening is continuously connected.

Further, as shown in FIGS. 2 and 3, the recovery / separation section 24 includes a recovery material guide cylinder 34 from the polishing case 33.
Is extended toward the rear and upward, the front end is bent forward, and a collected material separation case 35 is continuously connected to the front end, and a projection material supply chute 36 is provided from the lower end of the collected material separation case 35. Is extended toward the front lower side, and the tip end of the shot material supply chute 36 is continuously connected to the center of rotation of the projection vane 26.

Moreover, in the collected matter separating case 35, as shown in FIG.
As shown in Fig. 3, a separation net 37 for separating the projection material as the recovered material and the abrasive dust is stretched horizontally, and the projection material hopper 38 is provided directly below the separation net 37. Projection material hopper 38
A projection amount adjusting gate 39 for adjusting the projection amount is swingably attached to the lower end of the projection via a gate moving support shaft 39a, and the projection amount adjusting gate 39 enables opening and closing of the starting end opening of the projection material supply chute 36. The amount of projection material supplied from the projection material hopper 38 to the projection material supply chute 36 can be adjusted by the opening / closing amount of the projection amount adjustment gate 39.
A gate opening / closing amount control motor 40 is interlocked with a gate operating mechanism 48, and the opening / closing amount of the projection amount adjusting gate 39 can be controlled by the gate opening / closing amount control motor 40. 49
Is a viewing window.

Further, as shown in FIG. 2, in the collected matter separating case 35, a space immediately above the separating net 37 is separated by a partition wall 41 in the front and rear, and a front side chamber is formed as a dust collecting chamber 42. One end of the dust collecting hose 3 is connected to the chamber 42 via a connector 43. Reference numeral 44 is a baffle arranged in the dust collection chamber 42.

In this way, the projection material whose flow rate has been adjusted by the projection amount adjusting gate 39 from the projection material hopper 38 is supplied to the center of rotation of the projection vanes 26, 26 through the projection material supply chute 36, and the projection vane 26 is set. Vane drive motor 29,29
The projection material is rotated by the
32 Middle-to-polishing and sweeping case 33 is projected through the inside of the polishing and sweeping surface C so that the polishing and sweeping surface C can be polished.

At this time, the inside of the collected material separation case 35 is in a negative pressure state because the dust is collected by the dust collector 2 through the dust collecting hose 3, and the collected material is separated from the projection material in the polishing and cleaning case 33. The polishing dust is sucked into the collected material separation case 35 through the collected material guide cylinder 34 and collected, and the collected matter separation case
The blasting material is separated into the blasting material and the blasting dust in 35, and the blasting material is collected in the blasting material hopper 38, while the blasting dust is in the dust collection chamber 42 → connection body 43 → dust collecting hose 3 → dust collector 2 I try to be sucked in.

In the above-mentioned structure, the gist of the present invention is that the apparatus main body 12 is provided with the projection density measuring section M, which will be described below with reference to FIGS.

That is, the projection density measuring unit M, as shown in FIGS. 2 to 4, has a traveling speed detecting means 50 for detecting the traveling speed of the rear traveling unit 11, and a projection amount for detecting the projection amount of the projection material. Detection means 51, traveling speed detection means 50, and projection amount detection means 51
Projection density calculating means 52 for calculating the projection density on the cleaning surface C based on the detection result from, the display means 53 for displaying the projection density calculated by the projection density calculating means 52 as a measurement value, and the projection density Input means 54 for inputting the set value of
And a printing means for printing the measured value of the projection density at regular intervals
55, the input means 54 and the projection density calculation means 52 are connected to the input side, and on the output side the traveling motor 17 as the driving means of the rear traveling section 11, the vane driving motors 29, 29 and the display means 53. And a printing unit 55 are connected to the control unit 56, and the control unit 56 measures the projection density set value input from the input unit 54 and the projection density calculated by the projection density calculation unit 52. The gate opening / closing amount control motor for controlling the output of the traveling motor 17 and the vane drive motors 29, 29 so that the measured value of the projection density becomes equal to the set value.
40 and 40 can be controlled respectively.

The traveling speed detecting means 50 is such that the tachometer 60 is attached to the output shaft 17a of the traveling motor 17,
The rotation speed of the output shaft 17a of the traveling motor 17 is detected by the projection density calculating means 52, and the traveling speed is calculated based on the detection result.

The projection amount detecting means 51 is a vane driving motor.
The current value supplied to 29 is detected by an ammeter (not shown), and the projection density calculation means 52 calculates the projection amount of the projection material by an empirical formula based on the detection result. .

The projection amount of the projection material is controlled by the gate opening / closing amount control motor 40 for controlling the opening / closing amount of the projection amount adjusting gate 39 without changing the projection speed by keeping the rotation speed of the vane driving motor 29 constant. The amount of projection is adjusted.

As shown in FIG. 2, the projection density calculating means 52 and the control means 56 are integrally built in a control unit case 61 and have a timer function and a data storage function. Case 61 is a vane drive motor
It is located directly above 29,29. 62 is a unit support arm, 63 is a unit column, and 64 is an electric cable for supplying electricity from the generator 1.

As shown in FIG. 2 and FIG. 5, the display means 53 is detachably mounted on the ceiling wall of the collected product separation case 35, and is mounted on the rear wall of the casing 53a formed in the shape of a horizontally long rectangular box. , The left-side current value display window 65 and the right-side current value display window 66, which display the detection results of the current values supplied to the left and right vane drive motors 29, 29, respectively, and the traveling speed obtained by the traveling speed detection means 50. A traveling speed display window 67 for displaying the speed, projection amount display windows 68, 69 for displaying the projection amount of the projection material by the left and right projection vanes 26, 26 obtained from the projection amount detecting means 52,
A projection density display window 70 for displaying the projection density calculated from the projection amount and the traveling speed is provided.

In this way, the display windows 65, 66, 67, 68, 69, 70 provided on the display means 53 are constantly visible while the worker D is facing forward during the cleaning work. I am able to

As shown in FIGS. 2 and 6, the input means 54 is detachably engaged with and attached to the upper rear wall of the collected material guide cylinder 34, and the projection density setting is performed on the ceiling wall of the casing 71. A volume 72, projection amount setting volumes 73 and 74, and a traveling speed setting volume 75 are provided respectively. 76 is a locking bracket, 77 is a locking piece, and 78 is a contact rubber body.

In this way, the projection density setting volume
By setting the projection density in advance with 72 and the projection amount with the projection amount setting volumes 73 and 74, or by setting the traveling speed with the traveling speed setting volume 75, the measured value of the projection density If the set values are different, the control means 56 sets the gate opening / closing amount control motor 40 for output control of the traveling motor 17 and the vane drive motors 29, 29 so that the measured value and the set value are equal. Each is controlled automatically.

As shown in FIGS. 2 and 6, the printing means 55 is built in a casing 71 which contains the input means 54, and a printout port 76 is formed on the ceiling wall to print out the same. Each data displayed by the display means 53 is printed out from the mouth 76 at regular intervals.

Therefore, the worker D can reconfirm the measured value of the projection density at regular intervals based on the printed out data table, and can also record the measured value over time.

In this embodiment, the traveling motor 17 and the vane driving motors 29, 29 are automatically controlled by the control means 56, but the traveling motor 17 and the vane driving motors 29, 29 are controlled. Either one of them may be controlled.

[0032]

According to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, the traveling speed detecting unit of the projection density measuring unit detects the traveling speed of the traveling unit, and the projection amount detecting unit detects the projection amount of the projection material,
The projection density calculation means calculates the projection density based on the detection results from both detection means, and the display means displays the projection density as a measured value. Therefore, the projection density can be easily confirmed by visually recognizing the display means. can do.

Therefore, it is possible to easily measure the projection density and confirm the measured value before or during the polishing operation without lowering the efficiency of the polishing operation.

According to the second aspect of the present invention, the control unit compares the set value of the projection density input from the input unit with the measured value of the projection density input from the projection density calculation unit to calculate the projection density. In order to automatically control at least one of the traveling speed of the traveling unit and the projection amount of the projection material by the projection / polishing unit so that the measured value of is equal to the set value, the operator performs the correction work of the projection density step by step. It is not necessary, and the efficiency of the blasting and cleaning work can be improved also from this point.

According to the third aspect of the present invention, since the control unit prints the measured value of the projection density at constant time intervals, the operator reconfirms the measured value of the projected density at constant time intervals. In addition to being able to record the measured values over time.

[Brief description of drawings]

FIG. 1 is an explanatory view of a usage state of a mobile shot blasting apparatus according to the present invention.

FIG. 2 is a partially cutaway side view of the device.

FIG. 3 is a plan view of the same device.

FIG. 4 is a control block diagram.

FIG. 5 is a front view of display means.

FIG. 6 is a plan view of input means.

[Explanation of symbols]

 A Movable shot blasting device 10 Front side traveling part 11 Rear side traveling part 12 Device body 23 Projection / polishing part 24 Recovery / separation part

Claims (3)

[Claims] 1. A traveling unit for self-propelled movement, a projection / polishing unit for projecting and blasting projection material onto a blasting surface,
A mobile shot blasting device comprising a recovery / separation unit for recovering and separating the projection material projected from the cleaning / cleaning unit and the separated matter from the cleaning / cleaning surface, and providing a projection density measuring unit on the machine body, The projection density measuring unit is based on a traveling speed detecting unit that detects a traveling speed of the traveling unit, a projection amount detecting unit that detects an amount of projection material, and a detection result from the traveling speed detecting unit and the projection amount detecting unit. Mobile shot blasting device, comprising: a projection density calculation means for calculating a projection density on the cleaning surface and a display means for displaying the projection density calculated by the projection density calculation means as a measurement value. . 2. The projection density measuring unit connects the input unit for inputting a set value of the projection density, the input unit and the projection density calculating unit to the input side, and the driving unit of the traveling unit on the output side. And a control means connected to the control means, which compares the set value of the projection density input from the input means by the control means with the measured value of the projection density calculated by the projection density calculation means. A mobile shot blasting device characterized in that at least one of the traveling speed of the traveling unit and the projection amount of the projection material by the projection / polishing unit can be controlled so that the measured value of is equal to the set value. 3. A printing means is connected to the output side of the control means,
The mobile shot blasting device according to claim 2, wherein the printing means can print the measured value of the projection density at regular intervals.