JPH0150532B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cylinder disassembly and assembly apparatus.

(Prior technology) In general, the work of attaching and removing screws for cylinder clevises is done only by human power for lightweight objects, but since it is dangerous to use only human power for heavy objects, it is necessary to hold the cylinder clevis with a crane, etc., and use ropes, etc. to apply rotational force. We are currently working on removing and installing the clevis.
Particularly in the case of a heavy cylinder, the clevis 14, covers 12, 13, piston rod 1 shown in FIG.
When attaching and removing item 1, the clevis shape is often square, and the screw alignment accuracy is poor at the stage of assembling the threaded part.
It is considered a problem because there is a risk of getting caught due to the clevis falling, poor work efficiency, and a decrease in repair quality such as the screw being crushed at the moment of screw removal.

(Problems to be Solved by the Invention) The present invention aims to solve the above problems.

(Means for Solving the Problems) The present invention has been made to advantageously solve the above problems, and its gist is to provide a cylinder head cover attachment/detachment mechanism that clamps the cover and can move forward and backward; A tube clamp mechanism that fixes the cylinder tube on the same center regardless of the size of the tube diameter, a clevis removal mechanism that grabs the clevis and rotates the clevis on the same center, and a rod support mechanism that supports the piston rod extracted from the tube and allows it to move up and down. , a cover and a rod detachment mechanism that can be rotated following the core of the cylinder fixed to the tube clamp mechanism and that individually clamp the rod cover and piston rod are successively connected, and these are connected to each other with reference to the clamp core of the tube clamp mechanism. A cylinder characterized in that a retraction mechanism is arranged so as to be able to approach and move away from the clamp mechanism, and also removes the clevis attachment mechanism from the rail when the cylinder rod is attached or detached, and is arranged adjacent to the running position of the clevis attachment mechanism. Located in disassembly and assembly equipment.

However, when mechanizing the disassembly and assembly of a wide variety of cylinders, the inventors discovered that if centering adjustment work is a premise, the equipment would be extremely complex and expensive, and that it would take a long time to center during actual work. As a result of various studies, we decided to create a system that allows a series of disassembly and assembly mechanisms to move freely on the same trajectory centering on the tube clamp mechanism, centering on a mechanism that always clamps at the same center regardless of the size of the cylinder diameter. By making the center of the tube the same as the tube clamp core, we have developed a disassembly and assembly device that eliminates the need for the above-mentioned centering adjustment and can be installed with low capital investment.

(Example) The present invention will be described in further detail below with reference to Examples shown in the drawings.

FIG. 1 is an overall perspective explanatory view showing one embodiment of the present invention, and in the figure, 1 is a base on which the device of the present invention is mounted.
2 is a bearing rail fixedly arranged on the base 1; 3 is a rail also fixedly arranged on the base 1; 4 is a drive chain for the head cover attachment/detachment mechanism A; M1 is a motor for driving the drive chain 4;
5 is a chain that drives the cover and rod attachment/detachment mechanism E, and M2 is a motor that drives the drive chain 5.

Head cover detachment mechanism A is bearing rail 2
It consists of a sliding base A1 that can move forward and backward on the top, and a pair of left and right clampers A2 that are integrally provided on the base. A3 is the sliding surface of the clamper A2, and A4 is the cover clamp handle. By turning , the clamper can be opened to any desired degree. For A5, lock the clamper A2 so that it does not open while grasping the cover with the cover lock handle.

B shows a tube clamp mechanism, which consists of a gate-shaped fixed frame B1 fixed on a base 1 and a pair of clampers B2 provided on the frame B1. By rotating the guided tube clamp handle B4, its opening degree can be adjusted according to the diameter of the tube to be gripped.

The details of the tube clamp mechanism are shown in FIG. 2, in which a pair of left and right clampers B2 have a female thread B6 integrally provided at the bottom thereof and mesh with a screw B5 connected to the clamp handle B4. However, due to the left and right reverse screws on the screw B5, the pair of left and right clampers B2 are oriented toward the center, and the handle B4
Depending on the operation, they move by the same amount at the same time, i.e. the horizontal center of the clamp remains stationary at all times. Furthermore, the centers of the V-grooves formed on the left and right clampers B2 are always at a constant height regardless of the tube diameter, so clamping can always be done on the same center regardless of the cylinder diameter. and clamper B2
is fixed at its back to the spherical seat B7, and the spherical seat B7 is held by the spherical catch B8, and a stopper B1 is installed for the purpose of preventing the clamper B2 from falling forward.
1 is supported by a structure in which it is brought into contact with the lower part of the clamper, so that a slight degree of freedom can be obtained for the cylinder core in the clamped state when the clevis is removed or removed in relation to the clevis removal mechanism described later.

In the figure, B9 and B10 indicate a screw and a female screw for adjusting the height of the clamper B2. B12 is a screw provided in the case that accommodates the spherical seat B8, and by tightening the screw, the above-mentioned degree of freedom can be fixed.

Next, in Fig. 1, C indicates the clevis attachment/detachment mechanism, and C
Reference numeral 1 denotes a movable trolley, which is equipped with wheels C2 and can run freely on rails 3 arranged parallel to the bearing rails 2. C3 is the detachable mechanism main body case and the moving trolley C1
mounted on top. C4 is a drive motor that rotates a clamper C5 that grips and removes the clevis;
C6 is a clevis entry hole formed in the same center as the clamper B2 of the tube clamp mechanism B mentioned above;
7 is an engagement hole that engages with the rod F3 of the shunting mechanism F.

C10 is a rod centering device, details of which are shown in FIGS. 3 and 4, and is disposed on the tube clamp mechanism side of the clevis attachment/detachment mechanism so as to be movable in the axial direction of the rod via a slide bearing.
A clamper C14 having a V-shaped groove formed in a screw C12 with left and right reverse threads rotated by a screw C11 can be opened and closed freely, and its clamp core has the same core as the clevis attachment/detachment mechanism. Therefore, C15 in FIG. 4 shows the rod position before clamping and shows the rod core and clevis rotation center, and this is the rod position after clamping shown in C16, and the rod core = clevis rotation center. Adding devices is preferable because it facilitates the installation process.

Figure 5 is an enlarged view of the clevis clamper C5.
The clamper C5 can move forward and backward in the radial direction of the clevis entry hole within the main body case C3, and is supported by a mechanism that can rotate freely by the rotational force of the drive motor C4. A freely set pin C8 is provided.
This requires rotating the clevis body around the center of the female thread of the clevis when attaching and detaching the clevis.
Normally, the core determined from the outer shape of the clevis and the core of the female thread are not the same, so this serves to adjust the core.

Note that the clevis attachment/detachment mechanism is movable on the rail while maintaining the same clamp core as the tube clamp mechanism B.

D indicates a rod support mechanism, and D1 is a sliding base that can freely slide on the bearing rail 2. D2 is a slide frame that is movable in the horizontal direction on the sliding base 1, D3 is an elevating frame that is movable up and down by an elevating screw D4 engaged with the slide frame D2, and D5 is an adjustment for operating the slide frame D2. The handle D6 is a lift handle for operating the lift frame. The rod support mechanism is now constructed, and is placed in the V-groove provided at the top of the lifting frame D3.
It is possible to support the pulled out rod while maintaining the same core state as the clamp core of the tube clamp mechanism.

Next, E indicates the cover and rod attachment/detachment mechanism;
E1 is slidable on its sliding base on the bearing rail 2 by means of a drive chain 5. E2 is a clamper for the rod cover, and as shown in Figure 6, the frame E13 is mounted on the base so that it can rotate 90 degrees.
E4 is its sliding surface. E
3 is a clamper for the piston rod, which is rotated 90 degrees to reach position E2 and grip the piston rod. E5 is a worm wheel fixed to the frame E13, E6 is a worm drive shaft, and the rotation of this shaft rotates the clampers E2 and E3 through 90 degrees via the worm wheel E5.

E7 is a rod handle, E8 is a rod clamp handle, E9 is a cover clamp handle, E1
0 indicates a cover lock handle, and E11 indicates a worm rotation handle. The cover and rod attachment/detachment mechanism is constructed from this, and is capable of moving freely on the bearing rail 2 by holding the head cover and cylinder rod in the same center as the clamp core of the tube clamp mechanism B.

Next, the clamping and locking mechanism of the clamper will be explained with reference to FIG. 7, taking the piston rod clamper E3 as an example. (A2 and E2 also have the same structure.) That is, in the pair of left and right clampers E3, a female thread E14 integrally provided at the bottom meshes with a screw E15 connected to the clamp handle E8. Due to the left and right reverse threads provided on the screw E15, the pair of left and right clampers E3 are simultaneously moved toward the center by the same amount by operating the clamp handle E8, thereby clamping the piston rod 11 at the center of the device.

However, as shown in the figure, if a slight misalignment x occurs between the core of the device and the core of the cylinder (which is fixed by the tube clamp mechanism B), the clamp handle E8 must be rotated to absorb this misalignment. , Screw E15 and Clamper E3
The structure is such that the piston rod 11 moves by x along the core of the piston rod 11.

By tightening the lock handle E7 after absorbing the clamp and misalignment, the lock handle E
The tapered sleeve E16 inserted between the inner diameter part of the clamp handle 7 and the shaft of the clamp handle is tightened, and the friction with the shaft becomes large to prevent the movement of the clamper E3. This reliably prevents misalignment during assembly after disassembly, and maintains good work efficiency. Next, the 90 rotation mechanism of the cover and rod clamp mechanism and the engagement of the sliding base and drive chain will be explained with reference to FIG. First, in the state shown in Fig. 6, the rod cover is clamped by the clamper E2, and then the worm drive shaft E6 is rotated by the rotary handle E11, and the worm gear E12 is rotated, and the frame E is moved through the worm wheel E5 that meshes with the worm gear E12.
13 rotates. As a result, the clamper E2 rotates 90 degrees to the left in the figure while still clamping the rod cover, and the clamper E3 for rod clamping, which was in the horizontal position, becomes upright and can clamp the piston rod. In the figure, E15 is a screw for driving the clamper E3, and E17 is a screw for driving the clamper E2.

Next, reference numeral 6 denotes a slide bearing provided at the bottom of the sliding base E1, which has a U-shaped groove so as to insert the rail 2 therein, and is configured to straddle the rail. is slidable on the rail 2. 7 is a chain fixing bracket fixed to the lower part of the base E1, and the frame E13 on which the clampers E2 and E3 are mounted by the operation of the motor
is movable on the rail 2 together with the sliding base E1.

Next, Fig. 1F shows the evacuation mechanism of the clevis attachment/detachment mechanism C, and when the cylinder rod is attached/detached subsequently after the clevis is removed, the rod support mechanism D, cover, and rod attachment/detachment mechanism E are moved to the tube clamp mechanism B. As shown in the figure, it is placed adjacent to the traveling position of the clevis attachment/detachment mechanism in order to avoid interference and impossibility of access when approaching the clevis. It is composed of an arm F2 and a rod F3 provided on the arm F2, and the rod F3 is attached to the main body case C3 of the clevis attachment/detachment mechanism C.
The rod is fixed at a position where it can be inserted into the rod engagement hole C7 located in the rod.

Next, cylinder disassembly using the above embodiment device,
Explain the assembly operation.

(1) Open clamper B2 of tube clamp mechanism B.

(2) Transport the cylinder with a crane and position it in the center of clamper B2.

(3) Clamp the cylinder tube with clamper B2.

(4) Bring the clevis attachment/detachment mechanism C close to the tube clamp mechanism B and set it at the clevis clamp position.

(5) Centering device C10 installed in the clevis attachment/detachment mechanism
Clamp the rod.

(6) Clamp the clevis with clamper C5.

(7) Start the drive motor C4, rotate the clamper C5, and rotate the clevis.

(8) When the clevis is removed from the rod after rotation is complete, separate the clevis attachment/removal mechanism C from the tube clamp mechanism B, and insert the engagement hole C provided in the main body case C3.
Insert the rod of the evacuation mechanism F into 7.

(9) Operate cylinder F1 and clevis removal mechanism C
Remove it from the rail and set it in a sheltered position outside the travel line.

(10) Move the head cover removal mechanism A to the head cover clamp position.

(11) Clamp the cover with clamper A2 and lock the cover with cover lock handle A5.

(12) Remove the head cover mounting bolts (manually). (13) Move the head cover removal mechanism A backwards (cover removal).

(14) Move the rod support mechanism D, cover and rod removal mechanism E to the rod cover clamp position.

(15) Clamp the rod cover with clamper E2 and lock the rod cover with the cover lock handle.

(16) Remove the rod cover mounting bolts (manually), (17) Retract and stop the cover and rod removal mechanism E (remove the rod cover).

(18) Raise the elevating frame D3 of the rod support mechanism D to temporarily receive the rod.

(19) Frame E of cover and rod detachment mechanism E
13 by 90 degrees, make the clamper E3 upright, and move it to the rod clamp position again.

(20) Clamp the rod with clamper E3 and lock the clamp with lock handle E7.

(21) Retract the cover and rod removal mechanism E and rod support mechanism D in synchronization to complete the disassembly work.

Thereafter, each part of the cylinder is maintained as it is, and the cylinder is assembled by operating the apparatus of the present invention in the reverse order of the disassembly procedure.

(Effects) According to the cylinder disassembly/assembly device of the present invention, the disassembly/assembly time can be significantly shortened by mechanizing the removal/attachment of parts.

Reliable holding eliminates the danger of parts falling, allowing safe work.

Accurate operation ensures repair quality.

This eliminates the need for hand-holding parts and reduces the labor burden.

In particular, when disassembling and assembling heavy cylinders, this method can significantly improve efficiency, labor load, quality, and safety.

[Brief explanation of drawings]

The drawings show embodiments of the present invention, and FIG. 1 is a perspective explanatory view showing the configuration of the apparatus of the present invention. FIG. 2 is an explanatory cross-sectional view showing the configuration of the clamp part of the tube clamp mechanism. FIG. 3 is a side view of the clevis attachment/detachment mechanism and an explanatory view showing the arrangement position of the centering device. FIG. 4 is an explanatory cross-sectional view showing the structure of the centering device. FIG. 5 is an explanatory diagram showing the clevis clamper of the clevis attachment/detachment mechanism. FIG. 6 is an explanatory view showing the rotation mechanism of the cover and rod clamp mechanism, and the engagement of the sliding base and the drive chain. FIG. 7 is an explanatory cross-sectional view showing the cover and the misalignment tracing mechanism of the rod clamp mechanism. FIG. 8 is an explanatory diagram showing the configuration of a general cylinder. A...Head cover removal mechanism, A1...Sliding base, A2...Clamper, A3...Sliding surface,
A4...Cover clamp handle, A5...Cover lock handle, B...Tube clamp mechanism, B1...Fixed frame, B2...Clamper, B3...Slide surface, B4...Tube clamp handle, B5...Screw, B6...Female thread, B7...Spherical seat, B8...Spherical catch, B9
...screw, B10...female screw, B11...
Stopper, B12... Screw, C... Clevis attachment/detachment mechanism, C1... Moving trolley, C2... Wheel, C3
...Body case, C4...Drive motor, C5...
Clamper, C6... Clevis entry hole, C7...
Engagement hole, C8... Set pin, C9... Clamper body, C10... Centering device, C11... Handle, C12... Screw, C13... Female thread, C14... Clamper, C15... Clamp front position, C16 ... Position after clamp, D... Rod support mechanism, D1... Sliding base, D2... Slide frame, D3... Lifting frame, D4... Lifting screw, D5... Adjustment handle, D6... Lifting handle. , E...Cover and rod detachment mechanism, E1
...Sliding base, E2, E3 ... Clamper, E4
...Slide surface, E5...Worm wheel, E
6... Worm drive shaft, E7... Rod lock handle, E8... Rod clamp handle, E9
...Cover clamp handle, E10...Cover lock handle, E11...Rotating handle, E1
2... Worm gear, E13... Frame, E1
4... Female thread, E15... Screw, E16...
...Tapered sleeve, E17... Screw, F
...Escape mechanism, F1...Movable arm drive cylinder, F2...Movable arm, F3...Rod, M
1, M2... Motor, 1... Base, 2... Bearing rail, 3... Rail, 4, 5... Drive chain, 6... Slide bearing, 7... Chain fixing bracket, 10... Tube, 11 ... Piston rod, 12 ... Rod cover, 13 ... Head cover, 14 ... Clevis.

Claims (1)

[Claims] 1. A cylinder head cover attachment/detachment mechanism that clamps the cover and allows it to move forward and backward, a tube clamp mechanism that fixes the cylinder tube on the same center regardless of the size of the cylinder tube diameter, and a clevis attachment/detachment mechanism that grabs the clevis and rotates the clevis on the same center. , a rod support mechanism that supports the piston rod extracted from the tube and is movable up and down, and a cover and rod detachment mechanism that can rotate following the core of the cylinder fixed to the tube clamp mechanism and clamp the rod cover and piston rod individually, are successively connected. In addition, these are arranged so as to be able to approach and move away from the clamp mechanism with reference to the clamp core of the tube clamp mechanism, and a retraction mechanism for removing the clevis detachment mechanism from the rail when attaching and detaching the cylinder rod is provided in the clevis detachment mechanism. A cylinder disassembly and assembly device characterized in that it is arranged adjacent to a traveling position.