CN201677079U - Oil pump device of tube-cutting machine - Google Patents

Abstract

The utility model relates to an oil pump device of a tube-cutting machine, including a hydraulic pressure head, a piston, an aeration bolt, a top cover, a cylinder, a compression spring, a tube, a seal ring, a subbase, a press plate, a support rod, pins, a handle, a small piston and a pump, the cylinder is threadingly connected to the subbase, the tube is sleeved to the outer of the cylinder, the top cover is threadingly connected to the upper side of the cylinder, and the tube is pressed tightly by the top cover; the pinson and the seal ring form a piston rod assembly, the compression spring is sleeved to the piston rod, the hydraulic pressure head is arranged on the piston, the piston rod assembly is arranged inside the cylinder, a minitype manual pump is arranged on the subbase and on one side of the tube, the minitype manual pump is composed of the support rod, the pins, the handle, the small piston and the pump, the support rod is connected with the handle through the pins, the small piston arranged in the pump is connected with the handle, the pump is provided with a pressure-adjusting oil path, and a pump oil return pipeline is provided with an oil return path; the aeration bolt is fixed in an aeration hole arranged on one side of the top cover, and the press plate arranged on bottom of the piston is fixed on the subbase through bolts. The oil pump device has advantages of compact structure, stable performance, low failure rate, and easy maintenance.

Description

The oil pump device of pipe cutting machine

Technical field

The utility model belongs to the oil pump on the pipe cutting machine, replaces oil pump and cylinder component on the external similar pipe cutting machine, realizes promoting the cutter arm and moves up and down, and reaches the purpose of Pipe Cutting.Oil pump of the present utility model adopts built-in oil circuit, has reduced because pipeline connects loosening initiation pressure forfeiture, can't operate as normal etc. problem.

Background technology

Pipe cutting machine is used for cutting off of pipe fitting, and former pipe fitting mainly is to cut off with cutting machine, is subjected to the restriction of grinding wheel diameter, 8, and " above pipe can't cut, and large-size pipe need just can be finished by large-scale special equipment.The electronic pipe cutting machine of external 258 types carries out ring cutting by rotary tube piece, reduces cutter greatly and moves down height, can finish cutting off of arbitrary dimension pipe fitting as long as the cutter depth of cut surpasses tube wall thickness in theory.The electronic pipe cutting machine cutter of 258 types is installed on the cutter arm, oil pump is discharge pressure oil in the oil cylinder constantly, promotes piston and move up, and moves upward thereby drive the cutter arm rear portion that is connected on the piston, the cutter arm front portion that cutter is housed moves downward, and then cuts off pipe fitting.Electronic pipe cutting machine oil pump of 258 types and oil cylinder use high-pressure oil pipe to connect, and when work required pressure ratio higher, pipeline and seal there is very high requirement, this type belongs to the packaged type electric tool, as easy as rolling off a log generation causes oil circuit and leaks because flexible pipe reverses in moving process, build-up of pressure loss and machine can't operate as normal.Domestic manufacturer is not because can't technically reach requirement, have to adopt the jack of technology maturation to substitute this cover oil pump and oil cylinder, and jack can't be realized fast feed, the power loss that caused by force direction out of plumb tool arm, defectives such as pressure is unadjustable, not compact on the structure, coarse in appearance, allow the client have complaint.In order to break through domestic existing technical limitations and to satisfy user's demand to greatest extent, through test for a long time with constantly improve, utility model the oil pump device of this cover pipe cutting machine.

The utility model content

The purpose of this utility model is to overcome above shortcomings in the prior art, and provides a kind of reasonable in design, high efficiency, the oil pump device that performance is more stable.

The utility model for achieving the above object, the utility model adopts following technical scheme to be:

The oil pump device of pipe cutting machine, it comprises hydraulic pressure top, piston, air vent screw, top cover, cylinder body, compression spring, cylindrical shell, sealing ring, base, pressing plate, pole, pin, handle, valve piston, the pump housing, cylinder body is by being threaded on the base, the outer ring is overlapped upper shell again, top is tightened on the cylinder body by screw thread with top cover, simultaneously hold-down barrel; Piston and sealing ring are formed piston rod assembly, and the compression spring housing is on piston rod, and the hydraulic pressure top is installed on the piston, piston rod assembly is installed in the cylinder body, the side of base upper shell is equipped with by pole, pin, handle, valve piston, the small-sized hand-operated pump that the pump housing is formed, pole connects handle by pin, and the valve piston in the pump housing is connected with handle, on the pump housing, increase the pressure regulation oil circuit, on the blowback oil-piping, oil return circuit is set; Air vent screw is fixed in the passage that top cover one side offers, and is fixed on the base by screw at the pressing plate of piston base.

Oil return circuit is made up of steel ball, sealing shroud, fastening screw, and fastening screw is by sealing shroud top steel ball.

The pressure regulation oil circuit is made up of steel ball, rectangle compression spring, adjustment screw, and adjustment screw, rectangle compression spring, steel ball are installed in order.

Principle of the present utility model is:

A) in the built-in oil cylinder of oil pump, add the compression spring, open oil return valve after, under the effect of compression spring, piston is got back to initial position automatically, thereby realizes auto-reset function, following one action is ready, has improved operating efficiency greatly;

B) cause machine normally to use for solving the loosening easily build-up of pressure loss of moving process center tap, connect by original outside oil circuit and be built-in oil circuit, reduce the fault rate when mobile;

C) on the pump housing, increase by one by steel ball, rectangle compression spring, the oil circuit of adjusting the screw composition makes adjustable in pressure in order to controlled pressure, satisfies the split requirement of different size pipe fitting;

D) utilize the diameter subtractive combination to together oil sump and oil cylinder on same base, make more compact structure, quality is more stable, greatly reduces fault rate;

E) by external force piston being moved upward, make built-in oil cylinder produce negative pressure, is the oil cylinder fuel feeding thereby open three quick oil circuits, and piston just can directly arrive the operating position, when being used on the pipe cutting machine, makes cutter improve productivity effect fast near workpiece;

F) increase plastic hose at all oilers, can prevent effectively that greasy dirt from entering oil cylinder, reduced the maintenance rate of equipment, improved the life-span of product.

The utility model patent structure compactness, steady quality, fault rate is low, is convenient to safeguard and maintenance.

Description of drawings

Fig. 1 is the structural representation of utility model patent;

Fig. 2 is small-sized in moving pump configuration figure;

Fig. 3 is oil return circuit figure;

Fig. 4 is pressure regulation oil circuit figure.

The specific embodiment

Below in conjunction with accompanying drawing the utility model patent is described further.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4:

The oil pump of this utility model mainly is made up of following structure: hydraulic pressure top 1, piston 2, air vent screw 3, top cover 4, cylinder body 5, compression spring 6, cylindrical shell 7, sealing ring 8, base 9, pressing plate 10, plastic hose 11, pole 12, pin 13, handle 14, valve piston 15, the pump housing 16

The pressure regulation oil circuit of the oil return circuit of Fig. 3 and Fig. 4 also has some other seal and standard component.

Oil return circuit is made up of A. steel ball B. sealing shroud C. fastening screw, and fastening screw is by sealing shroud top steel ball.

The pressure regulation oil circuit is made up of D. steel ball E. rectangle compression spring F. adjustment screw, and adjustment screw, rectangle compression spring, steel ball are installed in order.

The oil pump structure of the utility model patent: cylinder body 5 is by being threaded on the base 9, and the outer ring is overlapped upper shell 7 again, and top is tightened on the cylinder body 5 by screw thread with top cover 4, simultaneously hold-down barrel 7.Piston 2 and sealing ring 8 are formed piston rod assembly, and compression spring 6 is enclosed within on the piston rod, and piston rod assembly is installed in the cylinder body 5, see shown in Figure 1ly, form inside and outside two cavitys like this, exocoel does not have the oil sump of pressure as oil pump, the loculus of the inside is the pressure chamber of oil pump, is used to provide external thrust.When original state or release, the compression spring 6 that certain pretension arranged is pushed into the stroke smallest end of oil pump with piston component, and the top of piston 2 is by the hydraulic pressure top 1 that is threaded, and there is pin-and-hole hydraulic pressure top 1, is used for needing the member of thrust to link with other.Air vent screw 3 is fixed in the passage that top cover 4 one sides offer, and is fixed on the base by screw at the pressing plate 10 of piston base, and plastic hose 11 connects on the oil return circuits.

The side of base 9 upper shells 7 is equipped with by pole 12, pin 13, handle 14, valve piston 15, the small-sized hand-operated pump that the pump housing 16 is formed, lift on the handle 14, drive valve piston 15 and move up, form negative pressure in the pump housing 16, the steel ball that promotes the pump housing 16 bottoms is opened oil-in, hydraulic oil enters the pump housing 16 from oil sump, and handle 14 is to pressing down then, and pressure makes the steel ball of the pump housing 16 close oil-in, open the steel ball of oil cylinder bottom, hydraulic oil enters oil cylinder base pressure chamber, promotes piston 2 and moves up, thereby finish a fuel feeding action.Move in circles, lift and press down handle 14 on constantly, constantly hydraulic oil is sent into the oil cylinder working-pressure chamber from oil sump, promote piston 2 and move upward, for other member provides enough thrust, simultaneously, compression spring 6 is also pressed tight more more.

See Fig. 4, on the oil circuit from the oil pump to the oil cylinder, set up one tunnel pressure regulation oil circuit.During use, adjust screw F, compress rectangle compression spring E in advance, withstand steel ball D, seal path towards oil sump according to the pressure turn that the outside is required.When the pressure of pressure chamber surpassed pre-pressing force, hydraulic oil was pushed steel ball D open, gets back to oil sump by built-in oil circuit.By preset pressure, when maloperation, can not damage thereby play the protection machinery equipment.

If when operating position during away from initial position, too slow to the pressure chamber delivery rate by manual pump, operating efficiency is too low, the oil pump of this patent is provided with three quick oil circuits between oil sump and pressure chamber.By the external force piston 2 that moves up, make pressure chamber produce negative pressure, open the steel ball of the quick oil circuit of shutoff, make hydraulic oil be full of pressure chamber rapidly, after the pressure balance, steel ball is because gravity is blocked oil circuit again.Pressing plate 10 in the oil cylinder bottom prevents that steel ball from dropping, thereby guarantees the reliability of oil pump work.

See Fig. 2, finish one action after, unscrew and hold out against screw C, the thrust of compression spring 6 promotes piston rod 2 and moves downward, pressure official post hydraulic oil is pushed the steel ball A in the oil return circuit open, hydraulic oil is got back to oil sump.Oil pump is got back to original state, is ready for operation next time.

Above content described in this specification only is to some primary structures of the utility model patent and the explanation of performance.The utility model patent person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described; only otherwise depart from the structure of the utility model patent or surmount the defined scope of these claims, all should belong to the protection domain of the utility model patent.

Claims (3)

1. the oil pump device of pipe cutting machine, it is characterized in that: comprise hydraulic pressure top, piston, air vent screw, top cover, cylinder body, compression spring, cylindrical shell, sealing ring, base, pressing plate, pole, pin, handle, valve piston, the pump housing, cylinder body is by being threaded on the base, the outer ring is overlapped upper shell again, top is tightened on the cylinder body by screw thread with top cover, simultaneously hold-down barrel; Piston and sealing ring are formed piston rod assembly, and the compression spring housing is on piston rod, and the hydraulic pressure top is installed on the piston, piston rod assembly is installed in the cylinder body, the side of base upper shell is equipped with by pole, pin, handle, valve piston, the small-sized hand-operated pump that the pump housing is formed, pole connects handle by pin, and the valve piston in the pump housing is connected with handle, on the pump housing, increase the pressure regulation oil circuit, on the blowback oil-piping, oil return circuit is set; Air vent screw is fixed in the passage that top cover one side offers, and is fixed on the base by screw at the pressing plate of piston base.

2. the oil pump device of pipe cutting machine according to claim 1, it is characterized in that: oil return circuit is made up of steel ball, sealing shroud, fastening screw, and fastening screw is by sealing shroud top steel ball.

3. the oil pump device of pipe cutting machine according to claim 1 is characterized in that: the pressure regulation oil circuit by steel ball, rectangle compression spring, adjust screw and form, adjust that screw, rectangle compress spring, steel ball is installed in order.

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