CN208489629U - Automation tube type bus encircles device in advance - Google Patents

Abstract

The utility model discloses a kind of novel in structural design, automation tube type bus compact, that pre- arch operation can be carried out to tube type bus encircle device in advance, the Yu Gong mechanism including carrying out pre- arch operation to tube type bus；The Yu Gong mechanism includes rack, the pre- arch fixture for being respectively arranged at rack both ends, the pre- arch arc-shaped plate of fixture, pre- arch fixture is set in rack by support rod, and the pre- arch fixture is flexibly connected with the end of support rod, and pre- arch fixture can swing in the horizontal direction；Length direction in rack between two pre- arch fixtures along rack is equipped at intervals at least one pre- arch oil cylinder, the telescopic shaft of pre- arch oil cylinder is equipped with pre- arch pressing plate, pre- arch pressing plate is oppositely arranged with pre- arch fixture, the arc-shaped plate of the pre- arch pressing plate, the pre- arch pressing plate is flexibly connected with the end of telescopic shaft, and pre- arch pressing plate can swing in the horizontal direction.

Description

Automation tube type bus encircles device in advance

Technical field

The utility model relates to a kind of pre- arch devices more particularly to a kind of automation tube type bus to encircle device in advance.

Background technique

Tube type bus is using copper pipe or aluminium-alloy pipe as conductor, is applied with a kind of bus bar products to insulate, main to apply In the conductor connection in China's power construction engineering between grid power transmission conducting wire and substation transformer, the jump in transmission line of electricity Made current conductor in connection conductor and heavy DC deicing device in line, power equipment, and was to replace traditional rectangle, slot The completely new conductor of shape, stick bus and flexible circuit conductor is one of equipment crucial in electric power power transmission and transformation system (material), to power transmission and transformation The safe and reliable operation of system and power equipment plays a crucial role.

But following problem is faced in tube type bus construction and tube type bus deformation process: 1, large-scale tube type bus Due to factors shadows such as static contact isolation switch weight, equipment downlead weight, settlement of foundation in dead weight and tube type bus It rings, amount of deflection is also easy to produce after lifting, is not able to satisfy the requirement of tube type bus construction regulations and specification, influences the erector of tube type bus Skill matter is complete, aesthetics and operation and maintenance, before use, processing must be modulated, after ensuring that tube type bus is installed Levelness；2, after installing, if the tube type bus between two supporting points is too long, it will appear tenesmus by effect of weight tube type bus Phenomenon, the tube type bus of arc certainly will reduce its electric conductivity, or even leave security risk to power engineering.Therefore, it is using Before need to carry out pre- arch processing to tube type bus, to ensure after installing under the action of self-weight so that tube type bus just fall to Horizontal linear shape.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, adapt to reality and need, and disclose a kind of structure design Automation tube type bus novel, compact, that pre- arch operation can be carried out to tube type bus encircles device in advance.

In order to realize the purpose of this utility model, the technology employed by the present utility model is

It discloses a kind of automation tube type bus and encircles device in advance, the Yu Gong mechanism including carrying out pre- arch operation to tube type bus； The Yu Gong mechanism includes rack, the pre- arch fixture for being respectively arranged at rack both ends, and the pre- arch arc-shaped plate of fixture encircles fixture in advance It is set in rack by support rod, the pre- arch fixture is flexibly connected with the end of support rod, and pre- arch fixture can be in level It swings on direction；

Length direction in rack between two pre- arch fixtures along rack is equipped at intervals at least one pre- arch oil cylinder, pre- to encircle The telescopic shaft of oil cylinder is equipped with pre- arch pressing plate, and the pre- pressing plate that encircles is oppositely arranged with pre- arch fixture, the arc-shaped plate of the pre- arch pressing plate, The pre- arch pressing plate is flexibly connected with the end of telescopic shaft, and pre- arch pressing plate can swing in the horizontal direction.

The tail end of the pre- arch oil cylinder is fixedly connected with pin shaft, and the pin shaft is flexibly connected with rack, and the pre- arch oil Cylinder can be swung in the horizontal direction by pin shaft, and the rack positioned at pre- arch oil cylinder tail end is equipped with angle electrical machinery, angle electrical machinery Line shaft is connect with pin shaft.

The rack above the pin shaft is equipped with angular transducer, and angular transducer is used for pin shaft angle of rotation Degree is monitored.

The front end of the pre- arch oil cylinder is equipped with the position that the length for stretching out to the telescopic shaft on pre- arch oil cylinder is monitored Displacement sensor.

Rack positioned at pre- arch fixture side is equipped with limiter, and the limiter is located between two pre- arch fixtures.

It further include normally closed brake, the normally closed brake is covered on pin shaft and is fixedly connected with rack.

The rack is equipped with fixed block, offers threaded hole on fixed block, the threads of support rod are connected to screw thread In hole.

It further include feed mechanism, the feed mechanism places tube type bus in Yu Gong mechanism, the feed mechanism setting In the rack side for being equipped with pre- arch fixture side, feed mechanism includes pedestal, the column that is vertically fixed on pedestal, described vertical The top of column is equipped with storing plate, and storing plate is obliquely installed, and the low side end of storing plate is equipped with baffle, and the storing plate is equipped with Opening, the opening run through the end of storing plate；Upper material oil cylinder, the tail end and column of upper material oil cylinder are equipped with positioned at the lower section of opening Hingedly, it is fixed with feeding fixture on the telescopic shaft end of upper material oil cylinder, feeding fixture is in U-shape；It further include being set to material oil cylinder The jacking cylinder of lower section, the telescopic shaft of jacking cylinder and the middle part of upper material oil cylinder are hinged, and the tail end and pedestal of jacking cylinder are hinged, After the upper material oil cylinder is jacked up upwards by the jacking cylinder, the feeding fixture can enter in opening；A left side for the rack The feed mechanism is respectively equipped in the middle part of right both ends and rack.

Top positioned at the storing plate at rack both ends is equipped with directing plate, and directing plate is set with storing plate spaced, parallel It sets, and the longitudinal plate top interval on the top of the directing plate and storing plate is arranged.

It further include cutting agency, cutting agency is used to convey tube type bus, and the cutting agency includes conveyer belt, conveying It takes and is equipped at intervals with several snap-gauges, several snap-gauges are arranged around conveyer belt, the driving on the roll shaft in conveyer belt end Wheel is connect by belt with feeder motor.

The utility model has the beneficial effects that:

It is the design its novel in structural design, compact, it is connected close between each mechanism, it is achievable to tube type bus in use Automation encircle operation in advance, can be improved the pre- arch efficiency of tube type bus in implementation by the use of the present apparatus, reduce tube type bus Pre- arch cost, improves tube type bus and encircles efficiency in advance.

Detailed description of the invention

Fig. 1 is the primary structure schematic diagram of the utility model；

Fig. 2 is the primary structure schematic diagram under the feed mechanism side view state in the utility model；

Fig. 3 is the feed mechanism primary structure schematic diagram in the utility model；

Fig. 4 is another structural schematic diagram of feed mechanism in the utility model；

Fig. 5 is using state structure diagram under the feed mechanism side view state in the utility model；

Fig. 6 is the structural schematic diagram after feed mechanism, part Yu Gong mechanism and feed mechanism cooperation in the utility model；

Fig. 7 is the Yu Gong mechanism primary structure schematic diagram in the utility model；

Fig. 8 is the Yu Gong mechanism partial structural diagram in the utility model；

Fig. 9 is the structural schematic diagram after pre- arch pressing plate, pre- arch oil cylinder and angle electrical machinery cooperation in the utility model；

Figure 10 is the side view state flowering structure after pre- arch pressing plate, pre- arch oil cylinder and angle electrical machinery cooperation in the utility model Schematic diagram.

Specific embodiment

The present invention will be further described with reference to the accompanying drawings and examples:

Embodiment: a kind of automation tube type bus encircles device in advance, referring to Fig. 1 to Figure 10.

The present apparatus it include the Yu Gong mechanism 200 for carrying out pre- arch operation to tube type bus, tube type bus placed into pre- arch machine Feed mechanism 100 in structure and the cutting agency for being conveyed to tube type bus 300, while further including for the present apparatus In each sensor and motor connection controller.

Specifically, the Yu Gong mechanism 200 in the present apparatus includes rack 201, is respectively arranged at the pre- of 201 both ends of rack Encircle fixture 205, it is pre- to encircle the arc-shaped plate of fixture 205, wherein and pre- arch fixture 205 is set in rack 201 by support rod 210, Meanwhile the pre- arch fixture 205 is flexibly connected with the end of support rod 210, and pre- arch fixture 210 can control in the horizontal direction It swings, specifically, 210 end of support rod is fixed with one, " [mounting plate 213 of " shape, mounting plate 213 is longitudinally disposed, encircles fixture in advance 210 is hinged by the shaft 212 in the fixed plate and mounting plate 213 at back, passes through the left and right pendulum for encircleing fixture 210 in advance in use Dynamic avoidable tube type bus side wall of its pre- arch fixture 205 in pre- arch bending causes impression to tube type bus tube wall, improves pre- The curved smoothness of tube type bus after arch.Further, the design is equipped with fixed block 211, fixed block also in the rack 201 Threaded hole is offered on 211, threaded hole is the through-hole through fixed block 211, and the threads of support rod 210 are connected to threaded hole Distance interior, that the pre- arch fixture 205 of adjustable support rod front end forward extends out in this way.

Further, in the racks 201 between two pre- arch fixtures 205, five are equipped at intervals with along the length direction of rack 201 A pre- arch oil cylinder 202, the telescopic shaft 230 of each pre- arch oil cylinder 202 is equipped with pre- arch pressing plate 203, pre- to encircle pressing plate 203 and pre- arch fixture 210 are oppositely arranged, the arc-shaped plate of the pre- arch pressing plate 203, and the end activity of the pre- arch pressing plate 203 and telescopic shaft 230 connects It connects, and pre- arch pressing plate can swing in the horizontal direction, specifically, 230 end of telescopic shaft is fixed with " [a connecting plate for " shape 231, connecting plate 231 is longitudinally disposed, and the pre- articulated shaft 232 encircleed on the connecting plate 233 and connecting plate 231 that pressing plate 203 passes through back is cut with scissors It connects, in use, the avoidable tube type bus that swings by encircleing pressing plate 203 in advance exists the pre- arch pressing plate 203 that this is flexibly connected The side wall of its pre- arch pressing plate 203 causes impression to tube type bus tube wall when pre- arch bending, and tube type bus is curved after improving pre- arch Smoothness.

Further, the tail end of five pre- arch oil cylinders 202 in this Yu Gong mechanism is fixed with a rotor plate 221, turns It is fixed with pin shaft 222 on movable plate 221, it is fixed there are two upper and lower spaced plate 220 in rack 201, when installation, rotor plate 221 are located between two plates 220, and pin shaft 222 extends through two plates 220 and is rotatablely connected with plate 220, further , the rack 201 positioned at pre- arch 203 tail end of oil cylinder is equipped with angle electrical machinery 209, installs on the line shaft 226 of angle electrical machinery 209 There is master gear 228, be equipped on pin shaft 222 from gear 227, master gear 228 is engaged with from gear 227, passes through angle electrical machinery 209 Rotation can successively drive master gear 228, from gear 227, pin shaft 222 rotate, rotor plate 221 can be driven by the rotation of pin shaft And the swing of pre- arch oil cylinder 202.The pre- arch oil cylinder 202 can be swung in the horizontal direction in this way.And oil ought be encircleed in advance After the pre- arch rotation angle needed for turning to of cylinder 202, need that pre- arch oil cylinder is fixed, therefore, the present apparatus it further include normally closed Formula brake, the normally closed brake are covered on pin shaft and are fixedly connected with rack.

Further, the design is also equipped with angular transducer in the rack 201 being located above the pin shaft 222 208, angular transducer 208 is for being monitored 222 rotational angle of pin shaft；Meanwhile the front end of each pre- arch oil cylinder 202 is equipped with The displacement sensor 206 that length for stretching out to the telescopic shaft 230 on pre- arch oil cylinder is monitored, passes through displacement sensor The collapsing length of 206 implementable monitoring telescopic shafts 230；Meanwhile it being also equipped in the rack 201 for being located at pre- arch 205 side of fixture Limiter 207, the limiter 207 are located between two pre- arch fixtures, and the limiter 207 can be multiple and be spaced setting Between two pre- arch fixtures, the use of limiter 207 can avoid failing due to displacement sensor, and hydraulic cylinder overhang is excessive, Cause pipe mother due to deforming serious situation, this limiter 207 and displacement sensor form duplicate protection in use.

Specifically, the feed mechanism 100 is three and is set to 201 side of rack for being equipped with pre- arch 205 side of fixture Portion, two in three feed mechanisms 100 are respectively arranged at the both ends of rack 201, and third feed mechanism 100 is set to rack Middle part, specifically, feed mechanism 100 includes pedestal 102, the column 113 that is vertically fixed on pedestal, the column 113 Top is equipped with L-shaped storing plate 107, and storing plate 107 is obliquely installed, and the low side end of storing plate 107 is equipped with baffle 131, The storing plate 107 is equipped with opening 109, and the opening 109 runs through the end of storing plate 107；The design is being located at opening 109 Lower section be equipped with upper material oil cylinder 105, the tail end of upper material oil cylinder 105 is hinged by feeding articulated shaft 112 and column 113, feeding oil It is fixed with feeding fixture 101 on 106 end of telescopic shaft of cylinder, feeding fixture 101 is in U-shape；Upper material oil cylinder 105 is two and left and right Interval setting, two upper material oil cylinders 105 are connected by cross bar 111, further include the jacking cylinder for being set to 105 lower section of material oil cylinder 103, the middle part of the telescopic shaft and cross bar 111 of jacking cylinder 103 is hinged, and the tail end of jacking cylinder 103 passes through jacking articulated shaft 104 Hinged with pedestal, and after the upper material oil cylinder 105 is jacked up upwards by the jacking cylinder 103, the feeding fixture 101 can be into Enter in opening 109.

Further, the storing plate 107 of the design also in the feed mechanism 100 for being located at 201 both ends of rack is upper Side is equipped with directing plate 100, and directing plate 100 and 107 spaced, parallel of storing plate are arranged, the top 132 of the directing plate and storing Longitudinal plate interval setting on plate, meanwhile, the top 132 of directing plate is to far from the back-flexing of longitudinal plate direction, and longitudinal plate To the top orientation back-flexing far from directing plate, the interval between the top 132 of directing plate and directing plate forms cast on top Bus entrance.

Specifically, the cutting agency is three and is arranged at intervals at and the symmetrical rack side of feed mechanism, blanking machine Structure includes conveyer belt 302, several snap-gauges 306 are equipped at intervals on conveyer belt 302, several snap-gauges 306 are set around conveyer belt 302 It sets, the driving wheel 305 on the roll shaft 303 in 302 end of conveyer belt is connect by belt with feeder motor 304, and conveying is located at End with 302 is equipped with guidance inclined plate 301, guides inclined plate 301, is close to conveyer belt 302 and is arranged, and guides the end of inclined plate 301 Equipped with the notch 307 passed through for snap-gauge 306.

In the design, each pre- arch oil cylinder is connect by solenoid directional control valve with hydraulic oil pump, and solenoid directional control valve and control Device connection, and above-mentioned angular transducer, displacement sensor and limiter is also connect with controller, and for solenoid directional control valve Connection with the connection of hydraulic oil pump, angular transducer, displacement sensor, limiter and controller is conventional prior, The present embodiment is no longer carrying out excessive repeat to its connection type.

The present apparatus is operated in the following order in use:

1, tube type bus feeding

Firstly, multiple tube type bus 316 are placed between storing plate 107 and directing plate 100, it is now placed in the pipe of least significant end Type bus 316 is against on baffle 131, and state is as shown in Figure 4,5 at this time.

2, the clamping of tube type bus

It can be found in shown in Fig. 5, firstly, the telescopic shaft of upper material oil cylinder 105 extend out to setting length, then, jacking cylinder 103 Cross bar is jacked and jacks up two upper material oil cylinders 105 upwards, by jacking cylinder 103 by upper 105 telescopic shaft end of material oil cylinder Feeding fixture 101 top to opening in, then feeding fixture 101 is buckled on tube type bus, jacking cylinder 103 continue jack one end Distance, then upper 105 telescopic shaft of material oil cylinder stretching can take out tube type bus from storing plate.

3, tube type bus is placed in Yu Gong mechanism

Telescopic shaft withdrawal on jacking cylinder 103 declines upper material oil cylinder 105, then upper 105 telescopic shaft end of material oil cylinder Feeding fixture 101 move down and in rack that tube type bus is placed between pre- arch fixture 205 and pre- arch pressing plate 203, Then, the telescopic shaft on jacking cylinder 103 continues to withdraw and feeding fixture 101 is promoted to separate with tube type bus, cast after separation Bus is supported by rack, and then, the telescopic shaft of upper material oil cylinder 105 withdraws and restores out of Yu Gong mechanism to initial position.

4, the pre- arch of tube type bus

The distance that pre- arch fixture 205 forward extends out should be first adjusted before pre- arch then controls five respectively by controller The telescopic shaft 230 of a pre- arch oil cylinder 202 pushes forward, and when promotion, the pre- pressing plate 203 that encircles is contacted with tube type bus tube wall and to cast Bus applies pressure, and tube type bus is compressed between pre- arch fixture 205 and pre- arch pressing plate 203 later, and passes through control five The pre- arch processing to tube type bus then may be implemented in the extension distance of telescopic shaft 230 of pre- arch oil cylinder 202, realizes to tube type bus Bending processing, then keeps the realization pressure maintaining in 2-3 hours of this state that tube type bus is promoted to form.And after pressure maintaining, five pre- arch oil The recovery of telescopic shaft 230 of cylinder 202 is separated to original state with tube type bus.

During pre- arch, encircle the avoidable tube type bus that swings of fixture 210 and pre- arch pressing plate 203 in advance excessively pre- The side wall of its pre- arch fixture 205 and pre- arch pressing plate 203 causes impression to tube type bus tube wall when arch bending, improves cast after pre- arch The curved smoothness of bus.

During pre- arch, the pre- swing angle for encircleing oil cylinder 202 discloses angle electrical machinery and is adjusted, and by normal after adjusting Pin shaft is fixed in normally closed brake, the swing angle locking to pre- arch oil cylinder 202 is realized in this way, in this process In, after angle electrical machinery is powered, normally closed brake, which is opened, to be realized to pin shaft unlock, and the pre- arch needed for reaching rotates angle Afterwards, corner motor powers off, and normally closed brake also powers off realization locking (aforesaid way is controlled by controller), makes it Pin shaft can not rotate again.

The angle and real-time transmission for measuring pin shaft rotation by angular transducer when arch oil cylinder 202 is rotated in advance are to controller Interior, the length that the telescopic shaft of each pre- arch oil cylinder 202 stretches out carries out real-time monitoring to it by displacement sensor 206, and limits Position device 207 can avoid failing due to displacement sensor, and hydraulic cylinder overhang is excessive, cause pipe mother due to deformation serious situation hair It is raw, meanwhile, this limiter 207 and displacement sensor form duplicate protection in use.

3, tube type bus blanking

After pressure maintaining 2-3 hours, tube type bus encircles completion in advance, when five pre- arch oil cylinders 202 recovery to original states, top Oil-lifting jar 103 drives upper material oil cylinder 105 to decline, and the telescopic shaft of upper material oil cylinder 105 extend out to predeterminated position, at this point, feeding fixture 101 are located at below tube type bus, and then, jacking cylinder 103 drives the upper rising of material oil cylinder 105 that feeding fixture 101 is promoted to be stuck in pipe On type bus, jacking cylinder 103 drives upper material oil cylinder 105 to continue to rise and separate tube type bus with rack, then feeding oil The telescopic shaft of cylinder 105 protracts and tube type bus is moved to the top of conveyer belt, and then jacking cylinder 103 drives upper material oil cylinder 105 decline and place tube type bus between two snap-gauges on the conveyor belt, at this point, two jacking cylinders in feed mechanism 103 are located at the left and right sides of conveyer belt, and hereafter, jacking cylinder 103 continues that material oil cylinder 105 is driven to decline and promotes feeding Fixture 101 is separated with tube type bus, and tube type bus is simultaneously delivered on guidance inclined plate by then conveyer belt rotation, later, jacking oil Cylinder 103 drives upper material oil cylinder 105 to rise, and the telescopic shaft of upper material oil cylinder 105 is withdrawn, and jacking cylinder 103 drives under upper material oil cylinder 105 Drop completes the reset of jacking cylinder 103 by above-mentioned movement, so far achievable to encircle operation in advance to tube type bus.

What the embodiments of the present invention were announced is preferred embodiment, and however, it is not limited to this, the common skill of this field Art personnel understand the spirit of the utility model easily according to above-described embodiment, and make different amplification and variation, but as long as The spirit of the utility model is not departed from, it is all within the protection scope of the present utility model.

Claims (10)

1. a kind of automation tube type bus encircles device in advance, the Yu Gong mechanism including carrying out pre- arch operation to tube type bus；Its feature Be: the Yu Gong mechanism includes rack, the pre- arch fixture for being respectively arranged at rack both ends, encircles the arc-shaped plate of fixture in advance, in advance Arch fixture is set in rack by support rod, and the pre- arch fixture is flexibly connected with the end of support rod, and pre- arch fixture can It swings in the horizontal direction；

Length direction in rack between two pre- arch fixtures along rack is equipped at intervals at least one pre- arch oil cylinder, encircles oil cylinder in advance Telescopic shaft be equipped with pre- arch pressing plate, it is pre- encircle pressing plate and encircle fixture in advance be oppositely arranged, the arc-shaped plate of the pre- arch pressing plate is described Pre- arch pressing plate is flexibly connected with the end of telescopic shaft, and pre- arch pressing plate can swing in the horizontal direction.

2. as described in claim 1 automation tube type bus encircle device in advance, it is characterised in that: it is described it is pre- arch oil cylinder tail end with Pin shaft is fixedly connected, and the pin shaft is flexibly connected with rack, and the pre- arch oil cylinder can be swung in the horizontal direction by pin shaft, Rack positioned at pre- arch oil cylinder tail end is equipped with angle electrical machinery, and the line shaft of angle electrical machinery is connect with pin shaft.

3. automation tube type bus encircles device in advance as claimed in claim 2, it is characterised in that: the institute above the pin shaft Rack is stated equipped with angular transducer, angular transducer is for being monitored pin shaft rotational angle.

4. automation tube type bus encircles device in advance as claimed in claim 2, it is characterised in that: it further include normally closed brake, The normally closed brake is covered on pin shaft and is fixedly connected with rack.

5. automation tube type bus encircles device in advance as described in claim 1, it is characterised in that: the front end of the pre- arch oil cylinder is set The displacement sensor for thering is the length for stretching out to the telescopic shaft on pre- arch oil cylinder to be monitored.

6. automation tube type bus encircles device in advance as described in claim 1, it is characterised in that: the machine positioned at pre- arch fixture side Frame is equipped with limiter, and the limiter is located between two pre- arch fixtures.

7. automation tube type bus encircles device in advance as described in claim 1, it is characterised in that: the rack, which is equipped with, fixes Block offers threaded hole on fixed block, and the threads of support rod are connected in threaded hole.

8. automation tube type bus encircles device in advance as described in claim 1, it is characterised in that: it further include feed mechanism, it is described Feed mechanism places tube type bus in Yu Gong mechanism, and the feed mechanism is set to the frame side for being equipped with pre- arch fixture side Portion, feed mechanism includes pedestal, the column that is vertically fixed on pedestal, and the top of the column is equipped with storing plate, and storing plate inclines Tiltedly setting, and the low side end of storing plate is equipped with baffle, the storing plate is equipped with opening, and the opening runs through the end of storing plate Portion；It is equipped with upper material oil cylinder positioned at the lower section of opening, the tail end and column of upper material oil cylinder are hinged, on the telescopic shaft end of upper material oil cylinder It is fixed with feeding fixture, feeding fixture is in U-shape；It further include the jacking cylinder being set to below material oil cylinder, jacking cylinder is stretched Contracting axis and the middle part of upper material oil cylinder are hinged, and the tail end and pedestal of jacking cylinder are hinged, when the upper material oil cylinder is by the jacking oil After cylinder jacks up upwards, the feeding fixture can enter in opening；It is respectively equipped in the middle part of the left and right ends of the rack and rack The feed mechanism.

9. automation tube type bus encircles device in advance as claimed in claim 8, it is characterised in that: the storage positioned at rack both ends The top of flitch is equipped with directing plate, and directing plate and storing plate spaced, parallel are arranged, and the top of the directing plate and storing plate On longitudinal plate top interval setting.

10. automation tube type bus encircles device in advance as described in claim 1, it is characterised in that: further include cutting agency, blanking Mechanism is used to convey tube type bus, and the cutting agency includes conveyer belt, several snap-gauges are equipped at intervals on conveyer belt, several A snap-gauge is arranged around conveyer belt, and the driving wheel on the roll shaft in conveyer belt end is connect by belt with feeder motor.