JPS5921433A - Bend correcting machine - Google Patents

Abstract

PURPOSE:To obtain a portable bend correcting machine which can be handled easily and is excellent in its operability, by incorporating an oil tank and a piston operating pump mechanism in a casing body of the bend correcting machine, and fitting a receiving arm so as to be rotatable. CONSTITUTION:Whether a rod-like member to be corrected R is corrected by tension by moving backwards a hook 14 or is corrected by pressure by moving forwards the hook 14 is determined, and a position of a changeover valve 30 is selected by operating a lever 48. Subsequently, the member R is inserted through and placed between a tip projection 13a of a receiving arm 13 and the hook 14. Subsequently, a switch S of an electric motor 11 is depressed, a motor shaft 20 and a cam 21 are driven to rotate, a piston 22 is made to execute a reciprocating motion, oil in an oil tank 18 is absorbed and compressed, and pressurized oil is generated. Subsequently, pressurized oil generated in this way is transferred by pressure 25 to a cylinder 29 by a pump mechanism 19, is supplied to a retreating oil path 26 from a space 33a, and thereafter, is led into a front side cylinder chamber 24a, and is moved for retreat by pressing a piston 35. That is to say, by retreat of the piston 35, a piston rod 15 and the hook 14 are moved for retreat, and the member R is drawn against the arm 13 and is brought to the bend correction.

Description

[Detailed description of the invention]

[Technical field of the invention] The present invention relates to a bending repair machine for correcting bending of reinforcing bars, etc.
Particularly regarding a portable bending correction machine with excellent handling workability [Technical background of the invention and its problems] At construction sites, etc., the bending of reinforcing bars that have already been assembled is corrected.1. or bend it into a desired shape.

[In cases like this, which may require multiple steps, conventionally, a pair of reinforcing bar supports are placed in contact with the reinforcing bars, and the hooks are moved back and forth to push and bend the reinforcing bars. The hook on which the bending correction machine is used is connected to the piston rod of a hydraulic cylinder, and the hook is reciprocated by supplying pressure oil. , oil from a separate oil supply unit with oil storage tank and pump! 1tζ
- 1 to 1 - supplied with fl, hydraulic pressure again; lt -
All + ff pieces τ゛Separate tank/\VC to be returned
fL). 1. I worked in a relatively crystalline position (T, I bar).
At construction sites where there is frequent work, ('9・') #, movement, connections should be made. Gζ oil IJ: H
In addition, there are problems such as difficulty in space and bending (see I). There was a problem with L7x, which had to be operated in the (1/) posture in order to handle bending and repair + Th, and 4 mm. Hita)] The present invention has been made with these points in mind (1), and is a portable bending repair IL+ that is easy to handle and has excellent workability.
The purpose is to provide armor to the victims. [Invention (abduction)] +, Investigating 1.71 The bending correction machine has a 11. casing body with an oil tank provided therein, and the oil stored in the oil tank disposed inside the casing body. A Σjq fan mechanism for pressure feeding, a cylinder chamber formed in the casing body and supplied with output oil from the pump mechanism 75, and a piston installed on the back side of the cylinder A, which is slidably arranged in the axial direction in the cylinder chamber. The piston of the release machine m1 to which the rod is connected, the switching pulp that is disposed in the oil passage that connects the pump mechanism and the cylinder chamber and that fills the pressure oil supply route, The rod-like member that is attached to the Air section of the main body is attached to the arm and the piston rod. 2. A correction hook for correcting the bending of the rod-shaped member;
The operator can carry it anywhere and use it at any time.Furthermore, the bending correction machine according to the present invention has an arm t that can be rotated around the outer periphery of the casing body. and
According to the position of the rod-shaped part H to be corrected, the receiver rotates the arm (2. Work 1. The bending correction machine can be used in an easy posture. [Embodiments of the invention] Refer to the drawings below 1. Next, embodiments of the invention will be described. Fig. 1 is an external view of a bending repair machine according to the invention.
This tr u=1-7T f;'F 'r: ¥11 is electric d
It is a mountain motor, and the electric motor is connected and fixed to the rear end of the casing body 12, and the AiT side of the casing body 12 has a reinforcing bar.
j> lz Ptl state fl HR (J) reception is complete I3
However, the casing body +2 (7) 11M times around the outer circumference = f
installed in the function. A pair of receivers are attached at an interval of +3 pJ, and a correction hook 14 is provided between the receivers and the arm 13 to correct the bending of the rod-shaped portion iJn. This hook 14 is connected to the rod-shaped member E (
It has a concave, 1-toe shape so that it can provide corrective force for pulling and pushing, and is attached to the tip 1'n',! At tl (hey 1. Reference numeral 16 is provided with a switch S for the electric motor 11, and T″b
) and 9e): 'r', +71
1: It is a supplementary part 1 (Jl)\endor attached to the front part of the body 12 in Kuonongui. FIG. 2 is a sectional view showing the internal structure of the bending correction machine 10 according to the present invention.
-1 Oil storage 1. ? An oil tank j8 is provided, and a pump 1 19 for pumping the oil in this oil tank 18 to a pressure of 1.7 cm is also provided.7-1. -r is there. The pump mechanism 19 is
Cam part 2 formed at the tip of motor ii'l) I 20
1, and this cup part 21 moves it forward by 11. The reciprocating movement of the piston 22 allows the high L
L-molten casing body 12 that generates oil
is divided by a heavy wall 23 into an oil tank 18 in which the pump mechanism 9 is installed and a cylinder chamber 24, and a bonto (shallow groove)
9, an oil tank 18, and a cylinder chamber 24 kJ, each of which is connected by an oil passage provided in a vertical wall 23. The oil passage is an oil supply passage 25 connected to the pump mechanism 19.
, a rearward oil passage 26 with a V-opening on the front side of the cylinder chamber 24, a forward oil passage 27 opening at the rear I11 of the cylinder chamber 24, and a return passage 2 communicating with the oil tank 18.
Zfi-
The oil distribution route can be switched by the valve 30. The switching valve 30 has a substantially cylindrical shape with a diameter of 1-7 and 11'F.
The cylindrical cylinder 29 formed in the i-bar wall 23 has a pair 12
It is inserted into the rotating iiJ function. The cylindrical cylinder 29 has an oil supply passage 25, a backward oil passage 26, and a forward oil passage 27.
, the other end of the return passage 28 is all open ()
Figure 3 (and 4th Ln 1 shows the insertion state of the cut 1 valve 30) 4 + A large diagram - C cut (・)
The valve 30 is symmetrical 1F'i (2Il'g!■
, a through passage 31 is provided in one symmetrical direction.
A point separated by a distance l from the starting point [-7-
-Pa 3: 2t+, 321] was completed this month 11. attitude/). This Theba 3:! a, ゛(2b and 13iJ Each oil A mentioned
The path is - side D ',' (2a and circle F'/1
2.'' gap 3 formed between the inner wall of the first holder 29: (a
f? - 0, the oil supply path 25 and the backward oil path 26 are 1iLji+ r\fL f(,':T',,forward J
'fl Oil JIW+ 27 The return passage 28 and the deva, the other j's debeni (2b and the inner wall of the cylindrical cylinder 29,
) between the shapes 1. 71. As a result, (see Fig. 3), there is a gap between the taper 32a of -j and the oil passage 26 for K and the return passage j28 are connected. When the height was 1 m, there was a carving between the ft12 side and the taber 32b.
1. From C, the oil supply passage 25 and the forward oil passage 27 are connected 111 and H (see Fig. 4).
The opening diameter d of the oil supply passage 25 which opens into the cylindrical cylinder chamber 24 is the diameter d of the through passage 3.
For 1? : old) 1- to taper, (2B,' (return passage 28 slightly larger than the distance Δl at end 4 of 2b) P, i, oil supply passage ko', 5, retreat oil passage 26 Openings 28a,', 48b, :!l(with c-f'
It is branched like Z>. A concave groove 34 that communicates the openings 28a and 28e or the openings 28b and 28c is formed in the widening end of the switching valve 30, and this concave groove 34 (↓Δ etc.) communicates with the C through-path 31. , switching operation i, t of the switching valve 30, pulp end (/
(This can be done by turning the connected lever 48 (Fig. 1).) Inside the cylinder chamber 24, the piston 35 with the piston rod 15 joined to the bar surface slides in the 11M11 line direction. The front side 24a of the cylinder chamber 24 (second
The pressure oil supplied to the piston (on the left side in the figure) causes the piston at 15 to move backward, and the rear side 2 of the pudding chamber 24
41) The piston rod 15 is set at I/+7 so that the pressure oil supplied to the piston rod (right side in Figure 2) moves the piston rod 15 forward.
■Water holes 36a and 36b are provided, and each ui:
+Iη specification') 6a, 36]) +7z &, -1, (-
σ) V'↓ Senification: (close 6a, 36b] 7 obtained 11-
Valve body: +7 a, 37 b 7): Spring 381 rises from the rear nozzle tI commercialization: (6a, 36b opening V is disposed in a biased state tl te b multiple The valve bodies 37a, 37b are the protrusions 39a, 39b protruding from the end surface of the piston 35.
'L, One protrusion 39a is the front cylinder ¥24
a, and the other protrusion 391) is located at the rear 1st eye 11.../
They are arranged in opposite directions to each other so as to protrude into the printer room 241]. Reference numeral 40 denotes a screw for receiving the spring 38, and a pair of screws are provided on the outer periphery of the piston 35, which is one step inward from the sliding part and has a diameter rL, which is screwed into the middle so that oil can pass through. springs 41a, 41b-h
:, -'f: The fittings 41' project from the piston end face to the front cylinder chamber 24a and the rear cylinder chamber 241, respectively. The front end side t of the cylinder chamber 24 is sealed A by the end wall 42.
42 of these end walls have 3 peaks and a high stone rod 15 protrudes forward. On the outer periphery of the Woosong main body 12, there is a cavity 4 for pressure buffering.
3 is provided, and this cavity 43 is covered with an elastic rubber membrane 44.
The tank covered by the space 43 and the oil tank 18 [
Communicated by release passage 45'! A circumferential groove 46 is formed on the outer periphery of the front part of the casing body 12.
The rear end of the arm 13 is fixed to the rod-like member receiver in the circumferential groove 46, and the gripping member 47 is rotatably fitted.1): The degree of fitting of the gripping member 47 is as follows. The auxiliary handle 17 is also fixed to the ring member 47 so that the handle 13 can be rotated manually. Although not shown in the figure, there is a hole in the middle of the oil supply passage 25.
The +7 lease passage leading to the oil tank 18 is connected, and there is a safety valve that opens the valve when pressure above a predetermined level is applied on the way. Even in such a case, it would be possible to prevent overload from being applied to the pump mechanism 19 or the electric motor 11. The rod-shaped member R is set (7) by pulling (1 (corrected by moving the hook 14 backward) or by pushing 1-4 (corrected by moving the hook 14 forward and moving the hook 14 forward to 11ζ11. )1-) or drinking-decision M), depending on the switching valve,) 0 place [old] can be selected by operating the lever 48. , the 7th order in 16th position modified by tension,
When the rod-shaped member R is inserted as shown in No. 11', AI-'- and FIG. As shown in the figure, there is a rod-shaped portion (
- Place the O-R in contact with the rear side of the protrusion 13a in the case of pressing correction. After setting this L sea urchin rod part (OJ) and the bending correction machine, press the switch S of 711, 'Upper movement mode', and the motor 0
9, the shaft 20 and the cam 21 are rotationally driven, and the piston 22 moves forward (1 to 1) to suction and compress oil in the oil tank 18 to generate pressure 1 to 7 pressure oil, and 6 to pump the pressure oil generated by the machine groove 19. Oil supply III' circuit 25 Kuraura cylinder 2
9 is pumped into the space 1, the 31st \IiC as shown, the space 33
Pressure oil (f) is supplied to the retreating oil passage 26 through a and is introduced into the front cylinder chamber 24a (rightward in FIG. By retreating, screw I/N rod 15 and hook 14
After that, the rod-shaped member R is pulled and bent with the arm 13 (1) 11 to correct the rod-shaped member R. In this song, the oil in the rear cylinder ￥24 b flows through the forward oil passage 27, space 331), and the return 1lfi passage 28.
I is returned to the oil tank 18. When the piston 35 moves backward at the final position 1, the protrusion 39b of the valve body 37b attached to the piston 35 comes into contact with the end of the vertical wall 23 L~, and the valve body 3 is moved against the spring 38.
7b retreats. This opens the through hole 36b,
The pressure oil in the front cylinder chamber 24a flows into the rear cylinder chamber 24b, which stops the movement of the piston 35, and also prevents the piston 35 from moving and the electric motor 1.
In this case, IF is prevented from applying a vortex load to 1.
The spring 411) is compressed between the piston 35 and the vertical wall 23, and the elastic force of the spring ring 41b causes the end of the piston 35 to rise slightly from the vertical wall 9.23, and the valve body 37b makes the A through hole 36t) suitable (
i7', f closes L:, the pressure oil will no longer escape, ]9! Direction (3i): By releasing the pressure oil in the cylinder chamber at the final movement position of the piston 35, the direction (3i) will be reached for 6 hours.
This prevents the switching valve 30 from becoming wider and facilitates the switching operation.Next, when correcting the bending by pressing the rod-shaped member Set the member R between the hook 14 and the receiver end 13, and turn the switching valve 30 onto the lever.
During this switching operation, the opening of the oil supply passage 25 [ ] diameter d or from the end of the through passage 31 to the tapers 32 a, 321 ]. The distance Δl at the end f of the oil tank is slightly larger than the distance Δl at the end of the valve 30, so that the oil oil supply path 25 is not completely sealed due to the distance Δl of the cutoff valve 30. Therefore, during the switching operation of the switching valve 30, even if the electric motor 11 is driven and pressurized oil is supplied from the pump mechanism]9, this pressure oil flows through the through hole 31 and the groove 34.
is released to the return passage 28, and the load on the pump mechanism 19 is reduced to the negative upper level 1. After switching the switching valve 30 to the IN position as shown in FIG. The oil flows into the forward movement oil passage 27 through the space formed between the two, and further flows into the rear cylinder chamber 24b. As a result, the piston 35 moves to the right in FIG. When the piston 35 moves to the final forward position, the protrusion 39a of the valve body 37a comes into contact with the end wall 42, as described above, the valve body 37a retreats, and the cylinder chamber 24b is removed from the through hole 38.
The pressure oil inside is released to the cylinder chamber 24a. It's Kade.
During forward movement, the oil in the front cylinder chamber 24a passes through the retreat oil passage 26, the space formed between the taper 32a of the switching valve 30, and the inner wall of the cylindrical cylinder 29, and then flows through the return passage 28 and the oil tank. Similarly, when switching the switching valve 30 from the position shown in FIG. 4 to the position shown in FIG. Overload of pump mechanism 19 and motor 1 (...
Koyo Z) Therefore (etc. (on the other hand, the true Mli example ILc will be corrected)
When working with the bending correction machine lO (・11, the name of the work is usually...endle 16 and auxiliary)・endle 17
If the arm 13 and the hook 14 are to be corrected by standing on the rod-shaped member J, the receiver will not be able to complete the adjustment due to the position of the worker's position 116' and the rod-shaped member.
If the arm 13 and the hook 14 cannot be moved to a convenient position, the auxiliary handle F or the hook 14 can be moved to an open position by manually rotating the arm 13.
[Effects of the Invention] As described on the left, according to the present invention, an oil tank,
The pump mechanism for piston operation 87J1 is built into the casing body of the bending correction machine (since it is ~, a separate oil supply unit is not required as in the past, and it is easy to handle and improves work efficiency. .Also, the receiver rotates the arm.
-If function (=I only), the worker can use the bending correction machine at the most convenient position for the work, and the work can be done easily with a high efficiency.Furthermore, the casing body The outer periphery is equipped with oil pipes (7), so there is no risk of damage to the work or an accident that breaks the bike. Since the valve is equipped with a release mechanism, it is possible to prevent a high pressure from forming between the 2 and 2 sides of the switching valve at the final movement position of the histone, making it easy to switch the switching valve. -Also, since the oil supply passage is not completely sealed from the valve V during the switching operation, even if the switching operation is performed while the pump mechanism is operating, the pump mechanism or electric motor There is no j1M load applied to.

[Brief explanation of the drawing]

FIG. 1 is an external view of a bending correction machine according to the present invention, FIG. 2 is a sectional view of the bending correction machine, and FIGS. 8, 1' and 4 are partially enlarged views of a switching valve. 12...Casing main body, 13...Receiver is arm, 1
4...hook, 15...screw), screw, 18.
...Oil 1.19...Pump mechanism, 24...Cylinder chamber, 25...Oil supply passage, 2(')...Reverse oil passage, 27...Forward oil passage, 28... ...(< ty Wakuji,'2≦)...f-1+k.-1 link, 30...
(J3 replacement) Lube, 31... Passage, ', '', ', >
...5's), 37a, 37b-...valve body, 3
9a, 39b-...'υnight), 4] a, 111+
...Spring, 46 φ circumferential groove. Client agent Kiyoshi Inomata 4-

Claims (1)

[Scope of Claims] ] A casing body provided with an oil tank therein; a pump mechanism disposed within the casing body for pumping oil stored in the oil tank; and a pump mechanism formed within the multi-casing body. A cylinder chamber to which pressure oil is supplied from a cylinder chamber, a piston with a II leasing mechanism, which is disposed slidably in the axial direction in the cylinder chamber and has a piston rod connected to the back, 1 pump Pa 4'M, and a cylinder chamber. Switching valve J that is arranged in the communicating oil passage and switches the pressure oil supply route = A receiver of a rod-shaped member attached to the front part of the casing body is attached to the tip of the arm and 1 piston rod, and the receiver is attached to the tip of the piston rod together with the arm. A bending correction machine for correcting the bending of a rod-shaped member, which is equipped with a correction hook and glue that work to correct the bending of the rod-shaped member. 2. The bending correction machine according to claim 1, wherein the arm is attached to be rotatable around the outer periphery of the casing body.