CN205751707U - A kind of device merging cable core filaments - Google Patents

Abstract

The utility model discloses a kind of device merging cable core filaments, belong to cable and produce apparatus field, which solve and easily affected by extraneous tension variation when existing cable core filaments is incorporated into core filaments dish and cause core filaments to coil degree of tightness problem inconsistent, even fracture of wire.This utility model device includes and silk unit, and silk unit includes that balance adjustment unit, balanced connecting rod and stretching unit, described balance adjustment unit include regulating casing, upper pressure wheel and depression bar, and stretching unit includes regulating wheel, and regulating wheel is provided with tension band；Described tension band one end is fixed on pedestal, and the other end is fixing with balanced connecting rod to be connected；Upper pressure wheel is eccentric, is arranged on casing upper end by bearing pin；Described depression bar is arranged at regulation casing middle-end by bearing pin, and the tail end of depression bar contacts with upper pressure wheel；Described balanced connecting rod is hinged with the tail end of depression bar.Tensity size in this utility model energy autobalance core filaments transmission process, it is ensured that core filaments coiling degree of tightness is consistent, the phenomenon more avoiding core filaments fracture occurs.

Description

A kind of device merging cable core filaments

Technical field

This utility model belongs to cable and produces apparatus field, specifically, relates to a kind of device merging cable core filaments.

Background technology

Cable include cable core and be wrapped in cable core outside insulating cover.The structure of cable core includes multiple, has Be to be formed by several or several groups of wires (often organizing at least two) are stranded, often mutually insulated between group wire, and often round Root center is twisted into；Have is then to be formed by multi-cable core filaments is the most stranded, and its structure is similar to rope structure.Latter cable Core needs by each cable core filaments and around on same core filaments dish before stranded, and the cable core filaments quantity on each core filaments dish is The six roots of sensation or eight, for making such core filaments dish, need to use special silk doubling device.

Chinese Patent Application No. 200910212690.6, the patent document in publication date on June 9th, 2010, disclose one Compound wound doubling winder, including putting silk device, oiling device, receipts silk device；Described each device sets gradually；At described oiling device And receive and be provided with a whole silk machine between silk device；The production method of described compound wound doubling winder, comprises the steps of 1) put Wire process: many one metal wires, cellosilk are released simultaneously；2) oil operation: make during tinsel, cellosilk after-combustion silk from Move and uniformly oil；3) whole wire process: install whole silk equipment additional, can make tinsel, cellosilk every silk to walk around one on same disc More than circle, thus it is consistent to reach to receive filament length degree, wired when solving to receive silk on same disc with branching wheel device and put thread With silk pressing problem；4) wire process is received: be received on the drum of various model by the multiple thread strands released on whole silk equipment and length is consistent； Described compound wound doubling winder arranges whole silk equipment, product quality by putting to increase in silk device, oiling device, receipts silk device operation It is significantly improved.Technical scheme disclosed in this application inevitably occurs in core filaments transmission process the change of tension force, and Once tension force changes, and the core filaments degree of tightness being wound to core filaments dish is inconsistent, the quality stranded by affecting follow-up core filaments, additionally core In silk transmission process, excessive being also possible to of tension variation causes fracture of wire phenomenon, have impact on production, reduces efficiency.Lack for rear one Falling into, prior art gives following solution:

Chinese Patent Application No. 201310360694.5, the patent application document in publication date on January 1st, 2014, disclose A kind of doubling winder with burn out detection function, it includes that frame, frame are provided with traverse yarn guide device and cylinder up-coiler Structure, cylinder winding mechanism is provided with motor, described frame is fixed with line crossing bracket, line crossing bracket is fixed with leading of horizontal direction To bar and erection support, erection support being fixed with broken thread detector, described broken thread detector is electric with the control of doubling frame Road is connected, and the motor on cylinder winding mechanism is connected with the control circuit of doubling frame.This invention utilizes the tension force of silk thread as inspection The resistance of measuring staff, silk thread broken string loses tension force and makes triggering block proximity transducer, and signal is transmitted as control circuit by sensor, from And control circuit control effectively control electric machine rotation, it is thus possible to accurately detect broken string, and can stop motion rapidly, side Reset operation continuous after an action of the bowels.Broken string is monitored by this technical scheme by arranging tension detecting apparatus, although can make work Personnel find fault in time, but still inevitable impact is normal produces, and reduce production efficiency, therefore, this technical scheme fail from Fundamentally solve above-mentioned fracture of wire problem.

Summary of the invention

1, problem to be solved

Easily affected by extraneous tension variation when being incorporated into core filaments dish for existing cable core filaments and caused core filaments coiling pine Problem the most inconsistent, even fracture of wire, this utility model provides a kind of device merging cable core filaments, can autobalance core filaments pass Tensity size during Dong, it is ensured that core filaments coiling degree of tightness is consistent, the phenomenon more avoiding core filaments fracture occurs.

2, technical scheme

For solving the problems referred to above, this utility model adopts the following technical scheme that.

A kind of device merging cable core filaments, including also silk unit, described also silk unit includes balance adjustment unit, puts down Weighing apparatus connecting rod and stretching unit, described balance adjustment unit includes regulating casing, upper pressure wheel and depression bar, described stretching unit bag Include regulating wheel, described regulating wheel is provided with tension band；Described tension band one end is fixed on pedestal, the other end and balance Connecting rod is fixing to be connected；Described upper pressure wheel is eccentric, is arranged on casing upper end by bearing pin；The rotatable company of described depression bar Connecing and be arranged on regulation casing, the tail end of depression bar contacts with upper pressure wheel；Described balanced connecting rod is hinged with the tail end of depression bar.

Preferably, stretching unit seat is also included；Described stretching unit seat is fixed on pedestal；Described tension band one end Being fixed on stretching unit seat, the other end is fixing with balanced connecting rod after passing stretching unit seat to be connected.

Preferably, described regulating wheel is provided with tensioning race；Described tension band is partly wrapped in tensioning race.

Preferably, one end that described tension band is fixed with stretching unit seat is provided with screw rod；Described screw rod is through opening Fixed by nut after tight unit seat.

Preferably, also include finely tuning spring；It is provided with spring on described depression bar and fixes bar；Described fine setting spring one end Being fixed on spring and fix on bar, the other end is fixed on casing lower end base.

Preferably, described casing lower end base is provided with through hole；Described fine setting spring is fixed on casing lower end base One end be provided with regulating rod；It is provided with external screw thread on described regulating rod；Described regulating rod is through described through hole one end It is provided with vernier knob；Described vernier knob is provided with the female thread corresponding with described external screw thread.

Preferably, the tail end of described depression bar is provided with lower pressure wheel by bearing pin；Described lower pressure wheel contacts with upper pressure wheel.

Preferably, described casing lower end is provided with casing and fixes seat.

3, beneficial effect

Compared to prior art, the beneficial effects of the utility model are:

(1) a kind of device merging cable core filaments of the present utility model can be in the case of cable core filaments transmission tension variation It is automatically obtained the regulation of cable core filaments transporting resistance, thus reaches the effect of balance tension, improve the transmission of cable core filaments stable Property, it is ensured that the workmanship of little core filaments dish, the situation also simultaneously being able to avoid overtension to cause cable core filaments to rupture occurs；

On the one hand (2) this utility model is set up stretching unit seat and is facilitated the installation and removal of tension band, is also on the one hand hands Frictional force size between dynamic regulation tension band and regulating wheel provides the foundation；

(3) this utility model arranges tensioning race on regulating wheel, it is possible to prevent tension band sideslip and landing, improves stable Property；

(4) this utility model arranges screw rod in one end that tension band is fixing with stretching unit seat and nut is capable of tensioning The manual regulation of frictional force size between band and regulating wheel；

(5) this utility model set up fine setting spring can improve equalization of strain regulation stability, it is to avoid device by electricity The minor variations of cable core silk transmission tension force and there is relatively big-movement, result in hypercorrect negative effect；

(6) lower pressure wheel that this utility model is arranged can reduce the friction that contacts between upper pressure wheel with depression bar, reduces the most true The frictional resistance (frictional resistance is little time big time possible, thus unstable, uncontrollable) that fixed and unstable factor produces, improves this The dexterity of action of utility model device.

Accompanying drawing explanation

Fig. 1 is the structural representation of single unit system in inventive embodiments 1；

Fig. 2 is in this utility model and the structural representation of silk unit；

Fig. 3 is the structural representation of balance adjustment unit in this utility model；

Fig. 4 is regulation box house structural representation in Fig. 3；

Fig. 5 is the structural representation of stretching unit in this utility model；

Fig. 6 is that schematic diagram is moved towards in cable core filaments transmission.

In figure: 1, pedestal；2 and silk unit；3, guiding trestle；4, commutation support；5, balance adjustment unit；6, balance is even Bar；7, stretching unit；8, casing lower end；9, seat fixed by casing；10, casing upper end；11, the first guide wheel；12, upper pressure wheel；13, adjust Joint casing；14, the second guide wheel；15, the 3rd guide wheel；16, depression bar；17, lower pressure wheel；18, bar fixed by spring；19, fine setting spring； 20, regulating rod；21, vernier knob；22, lock sleeve；23, screw mandrel is put；24, regulating wheel；25, bearing housing；26, tension band；27, open Tight unit seat；28, tensioning race.

Detailed description of the invention

Below in conjunction with specific embodiment, this utility model is further described below.

Embodiment 1

As it is shown in figure 1, a kind of device merging cable core filaments, including pedestal 1 and 16 arranged on pedestal 1 silk list Unit 2, wherein eight and silk unit 2 are arranged on the front of pedestal 1, and other eight and silk unit 2 are arranged on the back side of pedestal 1, by In with the device of the present embodiment with the use of silk device of receiving be arranged on the frontal of pedestal 1, so in order to by pedestal 1 back side Eight and the cable core filaments of silk unit 2 conduct to front, be also provided with guiding trestle 3 and commutation support at the top of pedestal 1 4, guiding trestle 3 and commutation support 4 are respectively provided with eight directive wheels that also silk unit 2 is corresponding with eight, pedestal 1 back side and Reverse wheel；

As in figure 2 it is shown, each and silk unit 2 all include balance adjustment unit 5, balanced connecting rod 6 and stretching unit 7,

As it is shown on figure 3, balance adjustment unit 5 includes regulating casing 13, upper pressure wheel 12 and depression bar 16, regulation casing 13 includes Casing lower end 8 becomes the casing upper end 10 that 120 ° of obtuse angles are arranged with casing lower end 8, and casing lower end 8 is towards the one side of casing upper end 10 Being provided with casing and fix seat 9, balance adjustment unit 5 is fixed seat 9 by casing and is fixed on pedestal 1；Arrange on upper pressure wheel 12 A piece pole top is fixedly connected with the first guide wheel 11, and depression bar 16 front interval is provided with the second guide wheel the 14, the 3rd guide wheel 15, on Pinch roller 12 is eccentric, is arranged on casing upper end 10 by bearing pin；Depression bar 16 is arranged on regulation casing 13 by bearing pin, should Bearing pin arranges the middle-end that position is regulation casing 13, and the tail end of depression bar 16 is provided with projection, and this projection contacts with upper pressure wheel 12；Flat Weighing apparatus connecting rod 6 is hinged with the tail end of depression bar 16；

As it is shown in figure 5, stretching unit 7 includes putting screw mandrel 23, regulating wheel 24, bearing housing 25 and stretching unit seat 27, Bearing up pulley 24 is fixed on to be put on screw mandrel 23, puts screw mandrel 23 and stretches into the one end in bearing housing 25 and pass through bearing rotary between bearing housing 25 Connecting, bearing housing 25 is fixed on pedestal 1, and stretching unit seat 27 is also secured on pedestal 1；It is provided with regulating wheel on regulating wheel 24 Groove 28；Tension band 26 half is wrapped in tensioning race 28, and tension band 26 one end is fixed on stretching unit seat 27, another Hold be connected fixing with balanced connecting rod 6.

The device of the present embodiment can play the Tensity size in autobalance cable core filaments transmission process, it is ensured that core filaments dish Consistent around degree of tightness, the phenomenon more avoiding core filaments fracture occurs, and its principle is: according to cable specification needs, the little core filaments dish having Needing simultaneously wound four cable core filaments, some needs eight, to need the little core filaments dish of eight cable core filaments in the present embodiment As a example by manufacturing process, putting of eight, pedestal 1 front silk unit 2 each on screw mandrel 23 fixed one and is wound around cable in the present embodiment The big core filaments dish of core filaments, and fixed by lock sleeve 22, each outgoing cable core filaments from big core filaments dish, successively from correspondence silk list Above 3rd guide wheel 15 of unit 2, the lower section of the second guide wheel 14, the top of the first guide wheel 11 be connected to after walking around (as shown in Figure 6) Receive same little core filaments dish on silk device, receipts silk device is provided with motor and speed reducer and drives little core filaments dish at the uniform velocity to rotate, little Eight cable core filaments are wound by the rotation of core filaments dish, and drive is put screw mandrel 23 and rotated around bearing housing 25, when eight and silk list When unit 2 some or multiple transmission cable core thread tension become big or diminish, it is wound to eight groups of cables core of same little core filaments dish Silk tightness is inconsistent, can produce a very large impact the manufacture of follow-up cable, a kind of cable core filaments that merges in the present embodiment Device is capable of the tension force in autobalance cable core filaments transmission process, solves the problems referred to above, when some and silk unit 2 When middle cable core filaments transmission tension force becomes big, the first guide wheel 11 is pressed by under cable core thread tension, makes upper pressure wheel 12 rotate, due to upper pressure Wheel 12 is off wheel, so the center of rotation distance upper pressure wheel 12 of postrotational upper pressure wheel 12 and depression bar 16 tail end projection contacts point Becoming big, compressing depression bar 16 tail end moves downward, and the balanced connecting rod 6 hinged with depression bar 16 tail end also moves downward so that regulating wheel Between 24 and tensioning race 28, friction reduces, thus accelerates to put the rotary speed of screw mandrel 23, it is achieved reduces balanced cable core filaments and passes The effect of dynamic tension；When tension force recovers, the present embodiment device also restores, and makes cable core filaments transmission Tensity size remain one Cause, improve the workmanship of little core filaments dish.

A kind of merging cable core filaments method, comprises the steps:

S1. on pedestal 1, it is set up in parallel multiple and silk unit 2；

S2. the big core filaments dish of multiple winding cable core filaments is fixed in step S1 by lock sleeve 22 respectively and is set up in parallel The putting on screw mandrel 23 of multiple and silk unit 2；

S3. by one end of respective cable core filaments on big core filaments dishes multiple in step S2 successively from the 3rd corresponding guide wheel 15 Same little core filaments dish on silk device is received around being connected to later in top, the lower section of the second guide wheel 14, the top of the first guide wheel 11；

S4. start and receive silk device, make little core filaments dish at the uniform velocity rotate under receiving silk device drive；

S5. the cable core filaments that is rotated through of step S4 medium and small core filaments dish affects multiple big core filaments dish and puts screw mandrel 23 synchronization rotation Turn；

S6., when tension force becomes big in some or multiple cable core filaments transmission process in each and silk unit 2, step is carried out S7；

S7. upper pressure wheel 12 rotates, and the tail end of compressing depression bar 16 moves downward, and balanced connecting rod 6 moves downward and makes tension band 26 And the friction between regulating wheel 24 diminishes, put screw mandrel 23 spin even faster；

S8. treat that (i.e. cable core filaments is wound to and the disk at little core filaments dish two ends little core filaments travelling expenses around to fully loaded cable core filaments Concordant) afterwards cable core filaments merged.

Embodiment 2

A kind of device merging cable core filaments, same as in Example 1, except that: as shown in Figure 4, also include fine setting Spring 19；On depression bar 16, the left side regulating casing 13 pin joint is provided with spring and fixes bar 18；Fine setting spring 19 one end is fixed Fixing on bar 18 in spring, the other end is fixed on bottom casing lower end 8；It is provided with through hole bottom casing lower end 8；Fine setting spring 19 It is fixed on the one end bottom casing lower end 8 and is provided with regulating rod 20；It is provided with external screw thread on regulating rod 20；Regulating rod 20 is through logical One end, hole is provided with vernier knob 21；Vernier knob 21 is provided with the female thread corresponding with external screw thread.

The present embodiment can produce beneficial effect on the basis of realizing embodiment 1 beneficial effect further: embodiment 1 Being automatically adjusted equilibrium function and there is also the problem that stability is the highest, reason is: be provided with one end of the second guide wheel 14 on depression bar 16 Lighter in weight, so on the one hand in the case of cable core filaments is by the least tension force, upper pressure wheel 12 just can oppress depression bar 16 tail end Moving downward, action is the sensitiveest, hypercorrect counter productive easily occurs, after on the other hand depression bar 16 tail end moves downward Reset difficulty, affects the normal transmission of cable core filaments；The present embodiment solves this problem, and fine setting spring 19 1 aspect can increase It is provided with the weight of second guide wheel 14 one end on depression bar 16, improves the stability of regulation process, on the other hand can make depression bar 16 Tail end resets rapidly after moving downward, and the effect of balanced cable core filaments transmission tension force more equalizes and flexibly；Additionally, the present embodiment Middle fine setting spring 19 can also manually regulate and arrange the tension force threshold values that this device depression bar 16 tail end moves downward, by rotating Vernier knob 21 can make fine setting spring 19 elongate, thus increase upper pressure wheel 12 and oppress depression bar 16 tail end and move downward and to overcome Power, such cable core filaments transmission process needs just can be moved downward by depression bar 16 tail end during bigger tension force.

A kind of merging cable core filaments method, comprises the steps:

S1. on pedestal 1, it is set up in parallel multiple and silk unit 2；

S2. the big core filaments dish of multiple winding cable core filaments is fixed in step S1 by lock sleeve 22 respectively and is set up in parallel The putting on screw mandrel 23 of multiple and silk unit 2；

S3. by one end of respective cable core filaments on big core filaments dishes multiple in step S2 successively from the 3rd corresponding guide wheel 15 Same little core filaments dish on silk device is received around being connected to later in top, the lower section of the second guide wheel 14, the top of the first guide wheel 11；

S4. start and receive silk device, make little core filaments dish at the uniform velocity rotate under receiving silk device drive；

S5. the cable core filaments that is rotated through of step S4 medium and small core filaments dish affects multiple big core filaments dish and puts screw mandrel 23 synchronization rotation Turn；

S6., when in some or multiple cable core filaments transmission process in each and silk unit 2, tension force diminishes, manually regulate Vernier knob 21, makes regulating rod 20 pull downward on fine setting spring 19 and extends, and depression bar 16 tail end moves upward, so that balanced connecting rod 6 move upward makes the friction between tension band 26 and regulating wheel 24 become big, puts screw mandrel 23 rotary speed slack-off；When each and silk unit When in 2, in some or multiple cable core filaments transmission process, tension force becomes big, manually regulation vernier knob 21, makes fine setting spring 19 Shorten, oppress depression bar 16 tail end and move downward power to be overcome, so that balanced connecting rod 6 moves downward reducing upper pressure wheel 12 Make the friction between tension band 26 and regulating wheel 24 diminish, put screw mandrel 19 spin even faster；

S7. merged around to cable core filaments after fully loaded cable core filaments until little core filaments travelling expenses.

Embodiment 3

A kind of device merging cable core filaments, same as in Example 2, except that: as it is shown in figure 5, in the present embodiment Manually regulate to realize degree of tightness between tension band 26 and tensioning race 28, at tension band 26 and stretching unit seat 27 fixing End is provided with screw rod；Screw rod is fixed by nut after stretching unit seat 27, and when so rotating nut, screw rod rises, tension Taut band 26, increases the friction between tension band 26 and tensioning race 28.

A kind of merging cable core filaments method, comprises the steps:

S1. on pedestal 1, it is set up in parallel multiple and silk unit 2；

S2. the big core filaments dish of multiple winding cable core filaments is fixed in step S1 by lock sleeve 22 respectively and is set up in parallel The putting on screw mandrel 23 of multiple and silk unit 2；

S3. by one end of respective cable core filaments on big core filaments dishes multiple in step S2 successively from the 3rd corresponding guide wheel 15 Same little core filaments dish on silk device is received around being connected to later in top, the lower section of the second guide wheel 14, the top of the first guide wheel 11；

S4. start and receive silk device, make little core filaments dish at the uniform velocity rotate under receiving silk device drive；

S5. the cable core filaments that is rotated through of step S4 medium and small core filaments dish affects multiple big core filaments dish and puts screw mandrel 23 synchronization rotation Turn；

S6., when tension force becomes big in some or multiple cable core filaments transmission process in each and silk unit 2, cable core is worked as When in silk transmission process, tension force becomes big, manually regulation is provided through the nut on the screw rod of stretching unit seat 27, makes under screw rod Fall loosens tension band 26, reduces the friction between tension band 26 and regulating wheel 24, puts screw mandrel 23 spin even faster；When each and silk unit When in 2, in some or multiple cable core filaments transmission process, tension force diminishes, manually regulation is provided through stretching unit seat 27 Screw rod on nut, make screw rod rise tension tension band 26, increase the friction between tension band 26 and regulating wheel 24, put screw mandrel 23 rotary speeies slow down；

S7. merged around to cable core filaments after fully loaded cable core filaments until little core filaments travelling expenses.

Embodiment 4

A kind of device merging cable core filaments, same as in Example 3, except that: as shown in Figure 4, the tail of depression bar 16 The projection that end is arranged is lower pressure wheel 17, and this lower pressure wheel 17 is arranged on depression bar 16 by bearing pin, can rotate, and lower pressure wheel 17 is with upper Pinch roller 12 contacts.

The present embodiment is played provides the benefit that the friction that can reduce between upper pressure wheel 12 rotary course and depression bar 16, It is less that sliding-frictional resistance is compared in rolling friction, and the function making this device autobalance tension force is more flexible.

Claims (8)

1. merge a device for cable core filaments, including pedestal (1) and be arranged on pedestal (1) 16 silk unit (2), Wherein eight and silk unit (2) are arranged on the front of pedestal (1), and other eight and silk unit (2) are arranged on the back of the body of pedestal (1) Face, the top of pedestal (1) is also provided with upper point of guiding trestle (3) and commutation support (4), guiding trestle (3) and commutation support (4) It is not provided with eight directive wheels corresponding with eight, pedestal (1) back side silk unit (2) and reverse wheel；Described also silk unit (2) include that balance adjustment unit (5), balanced connecting rod (6) and stretching unit (7), described balance adjustment unit (5) include regulation Casing (13), upper pressure wheel (12) and depression bar (16), described stretching unit (7) includes regulating wheel (24), it is characterised in that: described Regulating wheel (24) on be provided with tension band (26)；Described tension band (26) one end is fixed on pedestal (1), and the other end is with flat Weighing apparatus connecting rod (6) is fixing to be connected；Described upper pressure wheel (12) is eccentric, is arranged on casing upper end (10) by bearing pin；Described Depression bar (16) be rotatably connected and be arranged in regulation casing (13), the tail end of depression bar (16) contacts with upper pressure wheel (12)；Described Balanced connecting rod (6) hinged with the tail end of depression bar (16).

A kind of device merging cable core filaments the most according to claim 1, it is characterised in that: also include stretching unit seat (27)；Described stretching unit seat (27) is fixed on pedestal (1)；Stretching unit seat is fixed in described tension band (26) one end (27), on, the other end is connected through stretching unit seat (27) is fixing with balanced connecting rod (6) afterwards.

A kind of device merging cable core filaments the most according to claim 2, it is characterised in that: on described regulating wheel (24) It is provided with tensioning race (28)；Described tension band (26) is partly wrapped in tensioning race (28).

A kind of device merging cable core filaments the most according to claim 3, it is characterised in that: described tension band (26) with One end that stretching unit seat (27) is fixed is provided with screw rod；Described screw rod is solid by nut afterwards through stretching unit seat (27) Fixed.

A kind of device merging cable core filaments the most according to claim 1, it is characterised in that: also include finely tuning spring (19)；It is provided with spring on described depression bar (16) and fixes bar (18)；It is solid that spring is fixed in described fine setting spring (19) one end In fixed pole (18), the other end is fixed on bottom, casing lower end (8).

A kind of device merging cable core filaments the most according to claim 5, it is characterised in that: described casing lower end (8) Bottom is provided with through hole；Described fine setting spring (19) is fixed on one end of bottom, casing lower end (8) and is provided with regulating rod (20)； It is provided with external screw thread on described regulating rod (20)；Described regulating rod (20) is provided with fine setting rotation through described through hole one end Button (21)；Described vernier knob (21) is provided with the female thread corresponding with described external screw thread.

7. according to a kind of device merging cable core filaments described in claim 1,5 or 6, it is characterised in that: described depression bar (16) tail end is provided with lower pressure wheel (17) by bearing pin；Described lower pressure wheel (17) contacts with upper pressure wheel (12).

8. according to a kind of device merging cable core filaments described in claim 5 or 6, it is characterised in that: described casing lower end (8) it is provided with casing on and fixes seat (9).