CN212352968U - Pipe fitting buckling device - Google Patents

Abstract

The utility model relates to a pipeline production equipment technical field specifically is a pipe fitting withhold device, including outer locating frame, be equipped with the arc extrusion module that is circumference array interval distribution more than two in the frame of outer locating frame, all arc extrusion module surrounds to form and supplies pipe fitting male withhold the space, all arc extrusion module installs and supplies all to being located outer locating frame the inner activity elasticity that withholds the space and zoom that arc extrusion module formed zooms the surrounding frame, be provided with the drive in the front and back direction on the outer locating frame the inner activity elasticity zooms the surrounding frame and zooms in order to drive withhold the linear type advancing mechanism that the space was zoomed, use more in a flexible way.

Description

Pipe fitting buckling device

Technical Field

The utility model relates to a pipeline production equipment technical field specifically is a pipe fitting withholds device.

Background

All can adopt when current pipe connection construction to withhold equipment and go on, chinese patent like application number 201910152521.1 discloses a withhold machine, including withholding the machine body, the bottom welded fastening of withholding the machine body has the supporting leg, the top fixedly connected with drive hydraulic pump of withholding the machine body, the output of drive hydraulic pump drives hydraulic cylinder and connects, welded fastening has the transmission shaft on the telescopic shaft of drive hydraulic cylinder, the one end that drive hydraulic cylinder was kept away from to the transmission shaft is connected with withholding transmission through articulated seat, the inside of withholding transmission is provided with withholds extrusion device. According to the withholding machine, when the extrusion movable rod moves to be close to the sleeve along the arc-shaped channel, the extrusion movable rod can drive the wedge-shaped extrusion blocks to perform closed extrusion operation, stable radial extrusion force can be provided for the wedge-shaped extrusion blocks through equivalent transmission force provided by the withholding transmission device, sealing buckles between the rubber pipe and the iron sleeve can be connected and grounded more tightly, the defective rate is reduced, and the withholding quality of the rubber pipe is improved;

if chinese patent application No. 201921312168.0 discloses a withhold machine again, including the box with withhold the machine of withholding of aircraft nose, withhold the aircraft nose and be located the box top, with box fixed connection, the box in be provided with withhold aircraft nose tube coupling's oil feed pump and batch oil tank, still be provided with the driving motor who is used for driving the oil feed pump in the box, wherein: the box on be provided with the tube clamping seat, the tube clamping seat on be provided with the double-layered groove, the center pin in double-layered groove sets up with the center pin of withholding the aircraft nose is coaxial, the double-layered groove on be provided with a plurality of elasticity buckle, be provided with the buckle groove that sets up with the cooperation of elasticity buckle on the rubber tube connects. This scheme is through the setting in double-layered tube seat, elasticity buckle and buckle groove, can fix the rubber tube and connect, gets rid of manually operation's potential safety hazard, simultaneously, the double-layered groove of coaxial setting and withhold the aircraft nose, can also guarantee to withhold the precision of pressing, improve finished product quality, have simple structure, convenient operation, beneficial effect such as practicality is strong.

The buckling and pressing machine has certain limitation, can be only used in fixed workshops and other places, is not suitable for being used in the field, and has poor use flexibility.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a use pipe fitting withhold device more nimble.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a pipe fitting withholds device, includes outer locating frame, be equipped with the arc extrusion module that is circumference array interval distribution more than two in the frame of outer locating frame, all arc extrusion module surrounds to form and supplies pipe fitting male withholding space, all arc extrusion module installs and supplies all to being located outer locating frame the inner activity elasticity that withholds the space that the arc extrusion module formed and zoom encirclement frame, be provided with the drive in front and back direction on the outer locating frame the inner activity elasticity is zoomed encirclement frame and is zoomed in order to drive withholding the linear type advancing mechanism that the space was zoomed.

Preferably, the inner flexible retractable frame comprises a plurality of module bases surrounding to form a surrounding frame structure, and the module bases are elastically supported by each other.

As right the utility model discloses a preferred, the inboard arc surface department at corresponding module base is installed to arc extrusion module.

As right the utility model discloses a preferred, outer positioning frame is formed by half preceding frame and the concatenation of half latter half frame.

As right the utility model discloses a preferred, have in the upside concatenation department and the downside concatenation department of half preceding frame and latter half frame at least one can dismantle the connection and live.

Preferably, a driving plate capable of advancing in the front-rear direction and pushing the inner movable elastic contracting and expanding surrounding frame to expand and contract is arranged between the outer positioning frame and the inner movable elastic contracting and expanding surrounding frame.

Preferably, the linear propulsion mechanism is a jack, and a piston rod of the linear propulsion mechanism extends back and forth through the outer positioning frame and is connected with the drive plate.

Preferably, the driving plate is connected with a feed pointer which follows the driving plate to move forward and backward.

Preferably, the linear propulsion mechanism is provided on both sides of the outer positioning frame.

As right the utility model discloses a preferred, the left and right sides of outer positioning frame is installed respectively and is carried out spacing left baffle and carries out spacing right baffle on the right side of the encirclement frame that encirclement frame is zoomed to internal activity elasticity.

The utility model has the advantages that: 1. the hand-held use is realized, and the use is more flexible;

2. the operation is simple and convenient, and the device is suitable for being used in the field, mountainous areas and other places with severe conditions;

3. the buckling effect is good, the dismounting is convenient, and the structure is stable and reliable.

Drawings

FIG. 1 is a schematic perspective view of embodiment 1 with a spring omitted;

FIG. 2 is a schematic perspective view of FIG. 1 from another perspective;

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a front view of the structure of FIG. 1 with the spring installed;

FIG. 5 is a schematic perspective view of the outer positioning frame 1 of the structure of FIG. 1 with a portion of the structure removed;

FIG. 6 is a perspective view of the portion of the structure of FIG. 1 enclosed by the inner flexible pantograph enclosing frame;

FIG. 7 is a schematic view of the disassembled inner and outer positioning frames 1 of the structure of FIG. 1;

FIG. 8 is a schematic perspective view of the structure of FIG. 1 with left and right baffles;

FIG. 9 is a schematic perspective view of the structure of FIG. 8 with a portion removed;

FIG. 10 is a schematic view of the structure of example 1 when crimping is performed;

fig. 11 is a schematic view showing the installation of the arc-shaped compression module a to the module base m in embodiment 1;

fig. 12 is a schematic perspective view of one of the structures of embodiment 2.

Detailed Description

The following specific embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws and protection within the scope of the present invention.

Embodiment 1, as shown in fig. 1 to 11, a pipe fitting crimping apparatus includes an outer positioning frame 1, wherein two or more arc extrusion modules a are arranged in the frame of the outer positioning frame 1 and are distributed at intervals in a circumferential array, all the arc extrusion modules a surround and form a crimping space k for inserting a pipe fitting, and existing pipe fitting crimping equipment also forms a circular crimping space through a crimping die in a circumferential array, and some of the existing pipe fitting crimping equipment are also called as die holes, and are used for placing a pipe fitting, a joint, and the like. The existing withholding machine is a hydraulic device for withholding a pipe fitting assembly, and a matched metal joint exerts contraction force through a mould of the withholding machine, so that the metal joint is firmly withheld on a matched high-pressure oil pipe for engineering machinery or a brake pipe, an engine oil pipe, an air conditioner pipe and a power pipe on an automobile. The buckling and pressing machine is suitable for buckling and pressing various mechanical high-low pressure oil pipes, air pipes, water pipes, cable joints, automobile air conditioning pipes, automobile power steering pipes, engine oil pipes, gasoline supply pipes, building accessories and daily hot water air pipes, is widely applied to the industries of vehicles, engineering machinery, hydraulic machinery, welding and cutting equipment and the like, and can be used for connecting two pipe fittings. However, the existing equipment is large-scale equipment, generally, the equipment is placed in an indoor place such as a production workshop for operation, is not easy to be brought out, and is required to take pipes and the like back to the indoor for operation, and the pipe buckling operation cannot be carried out in time in places such as the outdoor place. What adopt in this application is not the structure of equipment formula, and outer locating frame 1 in this embodiment is all encircleed arc extrusion module a, does the following design simultaneously: all the arc extrusion modules a are arranged to an inner movable flexible zooming surrounding frame b which is positioned in the outer positioning frame 1 and used for zooming the buckling space k formed by all the arc extrusion modules a, the inner movable flexible zooming surrounding frame b is arranged at the periphery of a module assembly formed by all the arc extrusion modules a, each arc extrusion module a is arranged in the frame of the inner movable flexible zooming surrounding frame b, and the inner movable flexible zooming surrounding frame b can be zoomed per se, namely the inner movable flexible zooming surrounding frame b can be radially contracted like the module assembly of all the arc extrusion modules a, so that all the arc extrusion modules a are driven to radially contract to reduce the buckling space k, and the pipe fittings in the buckling space k are compressed to be fastened on joints or other pipe fittings. But this interior activity elasticity is zoomed and is enclosed frame b is one and can elastically compress and open structure frame in circumference, overcomes elastic force during the shrink and draws in and withhold the pipe fitting, relies on elastic force to reset during opening, and the process of zooming is similar with current structure, but the great difference of this application lies in: the utility model discloses a buckle pressing space k, including outer locating frame 1, the front and back direction drive be provided with on outer locating frame 1 interior activity elasticity is zoomed and is encircleed frame b and zoom in order to drive buckle pressing space k's linear advancing mechanism c that zooms, what this application adopted is zoomed through linear drive's mode at buckle pressing space k's radial plane, promptly, linear advancing mechanism c is through the advance and retreat of front and back, and to the internal activity elasticity zoom encircleed frame b can impel forward promptly, relies on the spacing of outer locating frame 1 itself framework front side to and the structure that the circumference elasticity of interior activity zooms encircleed frame b links up, finally make each arc extrusion module a close in circumference draw in and make buckle pressing space k diminish in order to buckle the pipe. Of course, the linear type propelling mechanism c can also be propelled backwards, and the outer positioning frame 1 is limited at the rear side; or the front and the back can be provided with linear type propelling mechanisms c, and the front and the back can respectively push the retraction of the inner movable elastic zooming surrounding frame b forwards and backwards. The linear type propelling mechanism c has more various choices, and can select a plurality of handheld propelling devices, thereby being convenient for outdoor carrying and operation.

Then, the specific structure of the internal movable elastic retractable enclosing frame b may include a plurality of module bases m enclosing to form an encircling frame structure, and the module bases m are elastically abutted, and the elastic abutment is realized by arranging springs between the module bases m. The springs are arranged to extend in the circumferential direction of the buckling space k as much as possible.

In order to better mount the arc extrusion module a and the module base m in a close contact manner, the inner side surface of the module base m is designed into an arc shape, which can be called as an inner arc surface m0, so that the arc extrusion module a is mounted at the inner arc surface m0 of the corresponding module base m and is fixed in a close contact manner, the arc extrusion module a can be fixed by adopting the existing mounting manner, the arc extrusion module a is usually designed into a fan-shaped block structure, a mounting head z is integrally formed at the outer side surface of the arc extrusion module a, the mounting head z can be radially inserted into the module base m, the module base m needs to be provided with a mounting hole z0 outwards along the inner surface of the inner arc surface m0 for the mounting head z to be inserted, then corresponding axial-extending insertion holes z1 are arranged at the mounting head z and the module base m, and the insertion holes z1 of the mounting head z and the module base m are inserted, the arc extrusion module a base can be locked on the module base m, the arc extrusion module a base is also a conventional fixing mode and can be fixed in a screw connection mode, the arc extrusion module a base can be conveniently disassembled and assembled, and the arc extrusion module a with different sizes can be uniformly replaced according to actual needs to buckle and press pipe fittings with different sizes. The inside-outside direction referred to in this embodiment is the inside-outside direction of the outer positioning frame 1.

Because the inner movable elastic zooming surrounding frame b is pushed linearly to zoom, in order to cover the arc-shaped extrusion module a as much as possible for driving, a driving plate q which can advance in the front-back direction and push the inner movable elastic zooming surrounding frame b to zoom is preferably arranged between the outer positioning frame 1 and the inner movable elastic zooming surrounding frame b, the driving plate q adopts a semi-surrounding structure, similar to a C-shaped plate, and has a structure with a forward opening or a backward opening, if the driving plate is driven forwards, the opening is forward, and if the driving plate is driven backwards, the opening is backward, and a part of the module base m for surrounding the inner movable elastic zooming surrounding frame b is driven to achieve a better linear driving contraction effect. The drive plate q is driven after being connected by a linear propulsion mechanism c. The linear propulsion mechanism c may be a jack, and more preferably a hand-held hydraulic jack, a piston rod c0 of the jack extends back and forth through the outer positioning frame 1 and is connected with the driving plate q, a corresponding sleeve-type mounting seat 100 communicating the inside and the outside of the frame is formed on the outer positioning frame 1, the linear propulsion mechanism c is optimized into a cylindrical outer casing c1 by adopting the structure of the jack, the piston rod c0 is a rod for outputting power of a large oil cylinder in the outer casing c1, the outer casing c1 is installed and fixed in the mounting seat 100, a fixed hand-held handle c2 extending back and forth is installed on one side of the outer casing c1 away from the outer positioning frame 1, a hydraulic driving rod c3 of the jack, namely a small piston rod in a small oil cylinder, extends up and down and connects the small piston rod to a movable hand-held handle c4, the fixed hand-held handle c2 may be straight back and forth, then the movable hand-held handle c4 is required to have a little upward inclination to facilitate, therefore, an operator can hold the fixed handle c2, and the movable handle c4 is controlled to drive the telescopic oil supply of the hydraulic drive rod c3, so that the piston rod c0 is pushed to drive the inner movable elastic telescopic surrounding frame b to contract, and the arc extrusion modules a contract to buckle the pipe fitting. After the buckling is finished, as long as an oil return valve rod on a jack is dialed or a similar oil return valve control button is operated to return and reset, the piston rod c0 can return to the original state, the internal movable elastic zooming surrounding frame b can also return to the original opening state, and the resetting of the arc-shaped extrusion module a can be realized together. In addition, the driving plate q may further be connected with a feed amount pointer j which advances back and forth along with the driving plate q, and a radial compression amount of the arc extrusion module a may be obtained according to a travel distance of the feed amount pointer j, so as to determine a size of a crimping diameter, which of course needs to be measured and calculated according to a size of the arc extrusion module a used for crimping pipe fittings of different sizes.

In the following, the above scheme is further optimized, and the outer positioning frame 1 may be formed by splicing a front half frame 11 and a rear half frame 12. The front half frame 11 is a half enclosure frame with a backward opening, and the rear half frame 12 is a half enclosure frame with a forward opening. At least one of the upper side splicing part and the lower side splicing part of the front half frame 11 and the rear half frame 12 is detachably connected. Design like this makes outer positioning frame 1 can make things convenient for the dismouting, and the arc extrusion module a of convenient maintenance and change unidimensional not, concrete mosaic structure can adopt: the front half frame 11 and the rear half frame 12 are connected by left and right caulking between lower portions thereof, and upper portions thereof are detachably connected by pins 120 inserted and removed from left and right sides. Of course, the upper and lower splicing parts can be spliced by adopting a detachable structure.

On the basis, a more effective implementation case is provided: a driving plate q is arranged in the rear half frame 12, a front side limiting enclosing plate y with an opening facing backwards is integrally formed in the front half frame 11, in an initial state, the driving plate q and the front side limiting enclosing plate y are oppositely arranged in the front and the back and a space is reserved so that the driving plate q can be pushed forwards, the front side limiting enclosing plate y is fixedly arranged as a part of the front half frame 11, the front side limiting enclosing plate y and the driving plate q form a further variable movable frame in the outer positioning frame 1, the front side limiting enclosing plate y and the driving plate q are not connected together but in a discrete state, the front side limiting enclosing plate y and the driving plate q are integrally used for enclosing the inner movable elastic zooming enclosing frame b, the activity between the front side limiting enclosing plate y and the driving plate q is mainly embodied in the activity of the driving plate q, and the forward and backward movement of the driving plate q enables the front side limiting enclosing plate y and the driving plate q to form the discrete type frame which can be linearly contracted so as to drive the inner movable elastic zooming enclosing frame b Contracting to buckle the pipe fitting.

In order to realize the buckling better, in the above scheme, preferably 8 arc-shaped extrusion modules a are adopted and distributed in a circumferential array, and in the initial state, the adjacent arc-shaped extrusion modules a are distributed at intervals. Then 8 module bases m are used to distribute and install the 8 arc-shaped extrusion modules a. The 8 module bases m are respectively called as a north base m1, a northeast base m2, an east base m3, a southeast base m4, a south base m5, a southwest base m6, a west base m7 and a northwest base m8, the eight base parts can also be designed into arc-shaped block structures similar to the arc-shaped extrusion module a, the base parts adjacent to the eight bases are elastically connected through circumferential springs, the end parts of the adjacent bases are provided with corresponding spring end parts arranged in holes, the design is similar to the existing design, then the internal movable elastic telescopic surrounding frame b of the structure is an annular telescopic frame, in the application, the radial contraction of each base is not balanced through a linear pushing mode at one side, because the linear pushing mode is realized through the springs, and the linear force application is realized, the springs can not be perfectly contracted at the beginning in the circumferential direction, therefore, the contraction of the springs in different directions has a small difference, particularly when a large-diameter pipe fitting is buckled, the buckling effect is poor, the front side and the rear side of the pipe fitting are contracted more, and the buckling work is finished when the contraction of the upper side of the pipe fitting is small, at the moment, the buckling positions of the pipe fitting have small difference in contraction amount, so that the hidden danger is brought to the structural tightness, stability and safety of the pipe fitting connection, of course, the implementation mode can be carried out in the application, for example, the situation that the safety requirement of a water pipe and the like is not enough is completely solved, the buckling is generally finished and needs to be detected, the mode can basically meet the buckling connection of the pipe fittings in various industries, and in addition, because the structure is designed, the inner side wrapping area of the movable frame formed by the driving plate q and the front side limiting wrapping plate y also needs to be circular as much as possible, therefore, the driving plate q can better cover a part of the module base m and is pushed forward so that the inner movable elastic retractable enclosing frame b is contracted and buckled, and the inner side surfaces of the driving plate q and the front side limiting enclosing plate y are both arc-shaped and are oppositely arranged. Also, the springs used in this prior design of the module base m may be referred to as inner coil springs n1 depending on the location, and the corresponding spring end insertion holes may be referred to as inner coil spring end insertion holes n 10.

This application is for further promoting the effect of withholding, do further improvement, let drive plate q and front side spacing bounding wall y form the inboard cladding region of movable frame and be the eight sides shape of just putting, then, each medial surface of drive plate q and front side spacing bounding wall y will be some straight spacing faces of leaning on, then, interior activity elasticity is zoomed and is enclosed frame b and also need be a supporting periphery and be the structure of octagon, the octagon movable frame who forms by drive plate q and front side spacing bounding wall y pastes tight cladding and live. Therefore, the design is made, the outer side surface parts of the north base m1, the east base m3, the south base m5 and the west base m7 are respectively and integrally connected with an upper abutting seat p1, a rear abutting seat p2, a lower abutting seat p3 and a front abutting seat p4, here, the east base m3 is regarded as a module base at the rear side, and in addition, the mentioned integral connection can be realized by adopting processes of integral forming, casting, forging, stamping bending and the like. The upper abutting seat p1, the rear abutting seat p2, the lower abutting seat p3 and the front abutting seat p4 are surrounded to form an octagonal frame structure which is elastic and has an octagonal frame structure, the octagonal structure formed by the upper abutting seat p1, the rear abutting seat p2, the lower abutting seat p3 and the front abutting seat p4 is an elastic and scalable octagonal structure, and the upper abutting seat p1, the rear abutting seat p2, the lower abutting seat p3 and the front abutting seat p4 abut against the inner side of the octagonal movable frame formed by the driving plate q and the front side limiting enclosing plate y. In addition, the upper abutting seat p1, the rear abutting seat p2, the lower abutting seat p3 and the front abutting seat p4 are spaced apart at the positions of the four oblique sides of the octagonal frame they form and are also provided with springs at the spaced positions, so that the upper abutting seat p1, the rear abutting seat p2, the lower abutting seat p3 and the front abutting seat p4 can be elastically contracted and contracted, and the respective oblique side portions pp of each abutting seat at both ends thereof can move on the inner side faces of the oblique sides of the octagonal movable frame formed by the driving plate q and the front side restraining enclosing plate y, the oblique sides of the octagon being the chamfered portions. The two adjacent bevel edge parts pp of the adjacent ends of the two adjacent abutting seats abut against the outer side surface of the module base m at a bevel edge, so that the abutting seats can be zoomed along the bevel edge and also can abut against the module base m between the module bases m where the abutting seats are respectively located to zoom in and out in the radial direction, the zooming operation is completed, the stress is balanced, and the arc extrusion modules a can be better contracted, buckled and returned to the center together. For example, the module base m corresponding to the adjacent oblique side portions pp of the upper abutting seat p1 and the rear abutting seat p2 is the northeast base m2, and the oblique side portions pp of the other two abut against the outer arc surface of the northeast base m2, wherein the abutting surfaces of the oblique side portions pp of the upper abutting seat p1 and the rear abutting seat p2 are as many as possible arc surfaces matched with the outer arc surface of the northeast base m 2. Also for the spring design, the spring between the bevelled portion pp of the abutment seat p1 and the rear abutment seat p2 is outside the inner ring spring n1 and can therefore be called outer ring spring n2, then the bevelled portions of the abutment seat p1 and the rear abutment seat p2 are provided with the outer ring spring n2 in the distance at the bevelled edge, while the bevelled portions pp of the upper abutment seat p1 and the rear abutment seat p2 are provided with the corresponding outer ring spring end portion placed in the hole n20 and should extend in the direction coinciding with the direction of extension of the bevelled edge. The design shows that the driving plate q can cover nearly half of the internal movable elastic scaling surrounding frame b, and the module can be driven to shrink and buckle more uniformly in the radial direction.

Further, the piston rod c0 of the linear actuator c may be connected to and preferably perpendicularly intersect the vertical edge portion q1 of the drive plate q. The mounting seat 100 is also formed on the vertical side portion q1 of the rear half frame 12. The upper horizontal side part q2 of the driving plate q can be connected with a feed quantity pointer j, the rear half frame 12 is provided with a traveling groove j0 for the feed quantity pointer j to vertically pass through and move back and forth, and the rear half frame 12 is provided with a dial j1 which can be engraved or fixed, so that measurement is convenient.

The relevant structure of the mold involved in the whole device is usually made of metal material, such as steel. The outer positioning frame 1, the drive plate, and the like may be made of steel, or may be made of hard plastic.

Further optimizing the structure, the left and right sides of the outer positioning frame 1 are respectively provided with a left baffle d1 for limiting the left side of the inner movable elastic zooming surrounding frame b and a right baffle d2 for limiting the right side of the inner movable elastic zooming surrounding frame b. The baffle plate can be locked at the left side and the right side of the outer positioning frame 1 through screws, so that the module base m in the inner movable elastic zooming surrounding frame b is prevented from sliding out of the outer positioning frame 1 in the left-right direction.

Due to the above-mentioned detachable splicing structure, there is a problem that, due to the design of the aforementioned structure, the north base m1 and the south base m5 are located at the front and rear middle positions of the outer positioning frame 1, when the structure is designed to be a splicing structure of the front half frame 11 and the rear half frame 12, when the structure is broken, the whole north base m1 and the south base m5 may fall off or expose half of the bases outside the frame, so that the north base m1 and the integrally connected upper abutting seat p1 are further designed to be divided into two as an integral module seat, a Z-shaped splicing seam f may be formed between the front and rear, after the front half frame 11 and the rear half frame 12 are separated by the pin shaft, the front half of the bases and the abutting seats can be better stored by the front half of the front half frame 11 and the rear half of the rear frame 12, which is convenient for maintenance and replacement of parts, etc., and the part of the south base m5 may.

Embodiment 2, as shown in fig. 12, it is different from embodiment 1 in the design of the linear propulsion mechanism c, and embodiment 1 also mentions that there may be more than one linear propulsion mechanism c, and one linear propulsion mechanism c may be designed on both the front and back sides of the outer positioning frame 1, so that the requirement for the front half frame 11 is that it needs to have the mounting seat 100 and the corresponding linear propulsion mechanism c, and secondly, the structure of the front side limiting enclosing plate y is removed, the front side limiting enclosing plate y is replaced by another driving plate q with a rear opening and the driving plate is not connected with the front half frame 11, and the driving plate q is located between the front half frame 11 and the inner movable flexible enclosing frame b and can move back and forth, the linear propulsion mechanism c is operated to propel back, and there is a linear propulsion mechanism c to propel the driving plate q to the center of the buckling space k, thereby driving the inner movable elastic zooming surrounding frame b to contract to complete the operation of buckling and pressing the pipe fitting, and then retreating to recover the original position. Can be operated by two persons simultaneously, is more convenient, and the application of force can also be optimized.

The device in this application is very suitable for the open air, and length and width size can be controlled at 544mm 204mm, and weight, weight also can be controlled within 10kg, and especially to the use of small-size pipe fitting, it is very good to respond well, for example, the pipe fitting of pipe diameter between 5-100mm, too big probably the effect is just poor, because handheld device will be done bigger, the effort that requires to exert also can become bigger, exceed certain limit, just probably not suitable handheld outdoor use.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a pipe fitting withhold device which characterized in that: including outer positioning frame (1), be equipped with arc extrusion module (a) that be circumference array interval distribution more than two in the frame of outer positioning frame (1), all arc extrusion module (a) surrounds to form and supplies pipe fitting male withholding space (k), all arc extrusion module (a) is installed and is supplied all to being located outer positioning frame (1) the interior activity elasticity that withholds space (k) and zoom that arc extrusion module (a) formed zooms encirclement frame (b), be provided with on outer positioning frame (1) in the front and back direction drive interior activity elasticity zooms encirclement frame (b) zooms in order to drive withholding linear type advancing mechanism (c) that space (k) zoomed.

2. A pipe fitting crimping apparatus as claimed in claim 1, wherein: the inner movable elastic zooming surrounding frame (b) comprises a plurality of module bases (m) which surround to form a surrounding type frame structure, and the module bases (m) are elastically abutted.

3. A pipe fitting crimping apparatus as claimed in claim 2, wherein: the arc-shaped extrusion module (a) is installed at an inner arc surface (m 0) of the corresponding module base (m).

4. A pipe fitting crimping apparatus as claimed in claim 1, wherein: the outer positioning frame (1) is formed by splicing a front half frame (11) and a rear half frame (12).

5. A pipe fitting crimping apparatus according to claim 4, wherein: at least one of the upper side splicing part and the lower side splicing part of the front half frame (11) and the rear half frame (12) is detachably connected.

6. A pipe fitting crimping apparatus according to claim 4, wherein: a driving plate (q) which can advance in the front-back direction and push the inner movable elastic zooming surrounding frame (b) to zoom is arranged between the outer positioning frame (1) and the inner movable elastic zooming surrounding frame (b).

7. A pipe fitting crimping apparatus according to claim 6, wherein: the linear type propulsion mechanism (c) is a jack, and a piston rod (c 0) of the linear type propulsion mechanism (c) extends back and forth through the outer positioning frame (1) and is connected with the driving plate (q).

8. A pipe fitting crimping apparatus according to claim 6, wherein: the driving plate (q) is connected with a feed amount pointer (j) which moves back and forth along with the driving plate (q).

9. A pipe fitting crimping apparatus as claimed in claim 1, wherein: the front side and the rear side of the outer positioning frame (1) are respectively provided with the linear type propelling mechanisms (c).

10. A pipe fitting crimping apparatus as claimed in claim 1, wherein: the left baffle (d 1) for limiting the left side of the internal movable elastic zooming surrounding frame (b) and the right baffle (d 2) for limiting the right side of the internal movable elastic zooming surrounding frame (b) are respectively arranged at the left side and the right side of the external positioning frame (1).

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