CN208636250U - A kind of wire rope standard stable state limiting device - Google Patents

Abstract

The utility model discloses a kind of wire rope standard stable state limiting devices, including clamping device, detection device and fixed loading device, mounting platform；The clamping device, the detection device are fixedly connected on the surface of the mounting platform；And the fixed loading device is fixedly connected on the rear of the mounting platform；Clamping device described in every group is provided with clamping wheel and lower clamping wheel and support arm；The detection device includes detection sensor and detection support arm；The detection device includes the various electromagnetic detection sensors such as weak magnetic detection, strong Magnetic testi, full Magnetic testi.Wire rope standard stable state limiting device provided by the utility model, has ensured the accuracy of wire rope standard data, while avoiding wirerope and shake strongly and damaging to equipment.

Description

A kind of wire rope standard stable state limiting device

Technical field

The utility model relates to wirerope Electromagnetic Testing Technology field more particularly to a kind of wire rope standard stable state limit dresses It sets.

Background technique

It is well known that key member of the wirerope as equipment such as lifting, lifting, promotion, traction, carryings, is widely applied In national economy every field (such as: harbour, mine, petroleum, Ferrous Metallurgy, ship, military project or other upgrade overline industry And mine hoist, petroleum drilling and workover machines, cableway, cable car, crane, elevator, carrying rope etc.).

Wirerope is used in the handling machinery of material (or other articles) for promotion, traction, tension and carrying.But It is that wirerope, which is once in faulted condition, can all seriously threaten industrial production, or even bring serious industrial accident.

In the prior art, a kind of detection device directly carried out on a steel cord of R & D design is (in traditional technology all It is in wirerope in the directly mobile traveling in detection platform top, amplitude is larger, and detection movement speed is very fast)；But wirerope At runtime due to the variation of wirerope angle, self gravity and hoisting heavy, wirerope or more or left and right will cause Movement.The movement of wirerope will cause following influence in the detection process: 1. wirerope vibration amplitude of fluctuation can touch when excessive To detection device, equipment is caused to damage；2. wirerope vibration amplitude of fluctuation will affect detection data accuracy when excessive.It is comprehensive Upper described, above-mentioned traditional detection device is unfavorable for the stable detection to wirerope, and then has seriously affected the detection of wirerope Data accuracy.

It is those skilled in the art in conclusion how to overcome the above-mentioned technological deficiency of the wire rope standard in traditional technology Technical problem urgently to be resolved.

Utility model content

Wire rope standard stable state limiting device provided by the utility model, to solve above-mentioned technological deficiency.In order to reach Above-mentioned purpose, the technical solution of the utility model are achieved in that

The utility model provides a kind of wire rope standard stable state limiting device, including clamping device, detection device and solid Determine loading device, mounting platform；The clamping device, the detection device are fixedly connected on the surface of the mounting platform On；And the fixed loading device is fixedly connected on the rear of the mounting platform；The clamping device is one group or multiple groups；

Wherein, clamping device described in every group is provided with clamping wheel and lower clamping wheel and support arm；The support arm One end is fixedly connected on the mounting platform, and the other end of the support arm connects the upper clamping wheel and described from top to bottom Lower clamping wheel；For crossing across wirerope to be detected between the upper clamping wheel and the lower clamping wheel；

The detection device includes detection sensor and detection support arm；The bottom of the detection support arm and the installation Platform is fixedly connected, and top connects the detection sensor；The detection sensor is arranged on the mounting platform, and Wirerope to be detected also extends through at the center of the detection sensor；The stable state limiting device be used for the wirerope into Limit movement within the scope of row safety detection；The detection sensor includes weak magnetic detection mode, strong Magnetic testi mode, the inspection of full magnetic Survey mode, giant magneto-resistance sensor detection mode, Hall element detection mode, the multiple sensors of electromagnetic detection mode.

Preferably, as a kind of implementable solution；The clamping device be it is one or more groups of, be separately mounted to the installation The left and right ends of platform.

Preferably, as a kind of implementable solution；The wirerope is one or more, and distribution arranged in parallel；Often Upper clamping wheel on the group stable state limiting device is used to clamp steel cable with the lower clamping wheel being disposed below.

Preferably, as a kind of implementable solution；The quantity of the detection sensor in the structure of the detecting device is One or more is corresponded with wirerope position to be measured respectively.

Preferably, as a kind of implementable solution；The wire rope standard stable state limiting device is for adapting to steel to be detected Cord angle change, can parallel or vertical or other various angles.

Preferably, as a kind of implementable solution；The wire rope standard stable state limiting device is provided with appliance stand, institute State detection sensor can be along described device bracket above and below, left and right trim locations.

Preferably, as a kind of implementable solution；Detection sensor shape includes the shapes such as round, rectangular.

Preferably, as a kind of implementable solution；The body surfaces of the upper clamping wheel and the lower clamping wheel are along circle The annular groove that peripheral wall direction is provided with convenient for wirerope insertion.

Preferably, as a kind of implementable solution；The upper clamping wheel and the lower clamping wheel are wear wheel.

Preferably, as a kind of implementable solution；The upper clamping wheel, the lower clamping wheel are wear-resisting material using material Material.

Compared with prior art, it is the advantages of the utility model embodiment:

A kind of wire rope standard stable state limiting device provided by the utility model, the main construction for analyzing the said goods can Know: the wire rope standard stable state limiting device, mainly by clamping device, detection device and fixed loading device, mounting platform etc. Structure is constituted；

Wherein, clamping device described in every group is provided with clamping wheel and lower clamping wheel and support arm；The support arm One end is fixedly connected on the mounting platform, and the other end of the support arm connects the upper clamping wheel and described from top to bottom Lower clamping wheel；For crossing across wirerope to be detected between the upper clamping wheel and the lower clamping wheel；The detection dress It sets including detection sensor and detection support arm；The bottom of the detection support arm is fixedly connected with the mounting platform, is pushed up Portion connects the detection sensor；The detection sensor is arranged on the mounting platform, and wirerope to be detected is also At the center of the detection sensor；The limit that the fixed loading device is used to carry out in range the wirerope is dynamic Make.

In the specific use process, the clamping device primary structure being made of upper clamping wheel and lower clamping wheel is (on i.e. described For crossing across wirerope to be detected between clamping wheel and the lower clamping wheel), it can be to crossing across to be detected Wirerope plays certain position-limiting action during progress；Further wirerope can examined in combination with fixed loading device It surveys platform upper moving range to be limited, Oscillation Amplitude when wirerope advances mobile can be reduced in this way, reduce its movement Rate reduces the shifting amount of its upper and lower left and right directions, guarantees to advance more stable, provides more stable detection for follow-up data detection Basis；At the same time, detection sensor is arranged on mounting platform and wirerope to be detected also extends through the detection sensing At the center of device；(while clamping device, detection device are fixedly connected on the surface of mounting platform), passes through detection in this way Sensor can carry out reliable and stable Data Detection to wirerope, and then ensure that the detection data accuracy of wirerope.Separately Outside, detection device and fixed loading device are mounted near the clamping wheel of mounting platform, since wirerope is without up and down when detection Or it moves left and right and equipment is damaged when avoiding wirerope concussion.

In conclusion wire rope standard stable state limiting device provided by the embodiment of the utility model, can be realized a steel Cord is limited in certain enclose, and is reduced vibration, has been ensured the accuracy of wire rope standard data, while it is strong to avoid wirerope Violent shock, which is swung, damages equipment.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it is also possible to obtain other drawings based on these drawings.

Fig. 1 is the main view knot of the wire rope standard stable state limiting device provided by the embodiment of the utility model for being equipped with roller Structure schematic diagram；

Fig. 2 is the wire rope standard stable state limiting device provided by the embodiment of the utility model for being equipped with roller of Fig. 1 Overlooking structure diagram；

Fig. 3 is the wire rope standard stable state limiting device provided by the embodiment of the utility model for being equipped with roller at a visual angle Lower schematic perspective view；

Fig. 4 is the wire rope standard stable state limiting device provided by the embodiment of the utility model for being equipped with roller in another view Schematic perspective view under angle；

Fig. 5 is the main view of the wire rope standard stable state limiting device provided by the embodiment of the utility model for being equipped with fixed pulley Structural schematic diagram；

Fig. 6 is the wire rope standard stable state limiting device provided by the embodiment of the utility model for being equipped with fixed pulley of Fig. 5 Overlooking structure diagram；

Fig. 7 is the wire rope standard stable state limiting device provided by the embodiment of the utility model for being equipped with fixed pulley in a view Schematic perspective view under angle；

Fig. 8 is the wire rope standard stable state limiting device provided by the embodiment of the utility model for being equipped with fixed pulley another Schematic perspective view under visual angle；

Fig. 9 is that part of the wire rope standard stable state limiting device provided by the embodiment of the utility model under another visual angle is vertical Body structural schematic diagram；

Figure 10 is part of the wire rope standard stable state limiting device provided by the embodiment of the utility model under another visual angle Schematic perspective view.

Label:

Clamping device 100；Upper clamping wheel 101；Lower clamping wheel 102；Support arm 103；

Detection device 200；Detection sensor 201；Detect support arm 202；

Fixed loading device 300；Rectangular body limits frame 301；

Mounting platform 400；

Wirerope A；Roller B；Fixed pulley C.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical Novel protected range.

In the description of the present invention, it should be noted that the word of the orientation or positional relationship of certain instructions, only It is the utility model and simplified description for ease of description, rather than the device or element of indication or suggestion meaning must have spy Fixed orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

In the description of the present invention, it should be noted that " connection " shall be understood in a broad sense, for example, it may be fixed Connection, may be a detachable connection, or be integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly It is connected, the connection inside two elements can also be can be indirectly connected through an intermediary.For the ordinary skill of this field For personnel, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.

The utility model is further described in detail below through specific implementation examples and in conjunction with the accompanying drawings.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 (and Fig. 5, Fig. 6, Fig. 7, Fig. 8), a kind of steel provided by the embodiment of the utility model Cord detects stable state limiting device, including one group or multiple groups clamping device 100, detection device 200 and fixed loading device 300, mounting platform 400 (i.e. mounting platform)；The clamping device 100, detection device 200 are fixedly connected in the installation On the surface of platform 400；And the fixed loading device 300 is fixedly connected on the rear of the mounting platform 400；

Wherein, clamping device 100 described in every group is provided with clamping wheel 101 and lower clamping wheel 102 and support arm 103； One end of the support arm 103 is fixedly connected on the mounting platform 400, and the other end of the support arm 103 is from top to bottom Connect the upper clamping wheel 101 and the lower clamping wheel 102；It is used between the upper clamping wheel 101 and the lower clamping wheel 102 In crossing across wirerope A to be detected；It should be noted that upper clamping wheel 101 and lower clamping wheel 102 can be realized a steel wire Rope A is limited in certain enclose, and vibration can be also much less therewith；It is reduced since wirerope A vibrates, detection data is also more quasi- Really.Equipment is damaged when avoiding wirerope concussion when detection.

The detection device 200 includes detection sensor 201 and detection support arm 202；The bottom of the detection support arm 202 Portion is fixedly connected with mounting platform, and top connects the detection sensor 201；The detection sensor 201 is arranged described On mounting platform 400 and the wirerope A is also extended through at the center of the detection sensor；The fixed loading device 300 Limit for being carried out in range to the wirerope A acts.The detection device includes weak magnetic detection sensor, strong Magnetic testi Sensor, full magnetic measurement sensor.(wherein Fig. 1-Fig. 4 is the wirerope provided by the embodiment of the utility model for being equipped with roller Detect the overall structure diagram under stable state limiting device different perspectives；Figure 5-8 illustrates the steel for being equipped with fixed pulley simultaneously Cord detects the overall structure diagram under stable state limiting device different perspectives；Fig. 9 and Figure 10 is that wire rope standard is steady simultaneously State limiting device (after mounting platform of dismantling) partial structural diagram).

Known to the main construction for analyzing the said goods: the wire rope standard stable state limiting device, mainly by clamping device 100, the structures such as detection device 200 and fixed loading device 300, mounting platform 400 are constituted；

Wherein, clamping device 100 described in every group is provided with clamping wheel 101 and lower clamping wheel 102 and support arm 103； One end of the support arm 103 is fixedly connected on the mounting platform 400, and the other end of the support arm 103 is from top to bottom Connect the upper clamping wheel 101 and the lower clamping wheel 102；It is used between the upper clamping wheel 101 and the lower clamping wheel 102 In crossing across wirerope A to be detected；The detection device 200 includes detection sensor 201 and detection support arm 202；Institute The bottom for stating detection support arm 202 is fixedly connected with the mounting platform 400, and top connects the detection sensor 201； The detection sensor 201 is arranged on the mounting platform 400 and wirerope A also extends through the center of the detection sensor Place；The limit that the fixed loading device 300 is used to carry out the wirerope A in range acts.

In the specific use process, 100 primary structure of clamping device being made of upper clamping wheel 101 and lower clamping wheel 102 (for crossing across wirerope A to be detected between the i.e. described upper clamping wheel 101 and the lower clamping wheel 102), can be right It crosses and plays certain position-limiting action during progress across wirerope A to be detected；In combination with fixed loading device 300 can further limit wirerope in detection platform top moving range, can reduce wirerope A traveling movement in this way When Oscillation Amplitude, reduce its rate travel, reduce the shifting amount of its upper and lower left and right directions, guarantee to advance more stable, be subsequent Data Detection provides more stable detection basis；At the same time, detection sensor 201 is arranged on mounting platform 400 and institute Wirerope A is stated to also extend through at the center of the detection sensor；(while the fixed company of clamping device 100, detection device 200 Connect on the surface of mounting platform 400), reliable and stable data can be carried out to wirerope A by detection sensor 201 in this way Detection, and then ensure that the detection data accuracy of wirerope.In addition, detection device and fixed loading device are mounted on installation and put down Near the clamping wheel of platform, since wirerope is without up and down or when moving left and right and avoiding wirerope concussion causes equipment when detection Damage.

In conclusion wire rope standard stable state limiting device provided by the embodiment of the utility model, can be realized a steel Cord is limited in certain enclose, and is reduced vibration, has been ensured the accuracy of wire rope standard data, while it is strong to avoid wirerope Violent shock, which is swung, damages equipment.

Wire rope standard stable state limiting device provided by the embodiment of the utility model can be used for the knot such as single rope or more ropes Structure；Simultaneously in specific detection, wirerope angle can be parallel, vertical or other various angles, therefore it is not limited to have One angle of body no longer repeats this utility model embodiment one by one.Wire rope standard stable state limiting device, device cooperation Original roller (i.e. roller B illustrates the wire rope standard stable state limiting device for being equipped with roller referring to figures 1-4) or fixed pulley (i.e. fixed pulley C illustrates the wire rope standard stable state limiting device for being equipped with fixed pulley referring to figure 5-8) keeps wirerope steady State；The wire rope standard stable state limiting device and sensor provided by the embodiment of the utility model have up and down, left and right fine tuning function Energy；

The front-rear position of above-mentioned weak magnetic sensor, strong Magnetic Sensor or full Magnetic Sensor in clamping wheel at the same time.Together When every wirerope correspond to clamping wheel and can be not specifically limited in this embodiment for 1 group or multiple groups.

Specific configuration to wire rope standard stable state limiting device provided by the embodiment of the utility model and specific below Technical effect, which is done, to be described in detail:

Preferably, as a kind of implementable solution；The clamping device 100 is two groups, and it is flat to be separately mounted to the installation The left and right ends of platform 400.

In the specific configuration of wire rope standard stable state limiting device: every group of clamping device 100 is all by being provided with upper clamping Wheel 101 and lower clamping wheel 102 and support arm 103 are constituted；The wire rope standard stable state limiting device its clamping device 100 can be with One group or multiple groups are set, can be selected as the case may be；In the structure of meaning shown in Fig. 1, the clamping device 100 is preferred It is two groups, and is separately mounted to the left and right ends of the mounting platform 400, two groups of clamping devices 100 is separated setting, also The stability of on-line checking can be enhanced, guarantee that mounting platform 400 is preferably run.

Preferably, as a kind of implementable solution；The wirerope A is 1 or more, and distribution arranged in parallel；

Upper clamping wheel 101 on stable state limiting device 100 described in every group is used to press from both sides with the lower clamping wheel 102 being disposed below Hold steel cable A.

Preferably, as a kind of implementable solution；The detection sensor 201 in 200 structure of detection device Shape is rectangular or round.

It can be to through the steel in its framework it should be noted that limiting frame 301 by above-mentioned rectangular body Cord A or more play moves left and right range and is limited, so that the stability of wirerope traveling is further enhanced, to enhance Detection stability and accuracy and reliability).

Preferably, as a kind of implementable solution；Stable state limiting device follows wirerope angle change to be detected, can be In parallel, vertically or other various angles.

It should be noted that stable state limiting device follows wirerope angle change to be checked, can be flat in specific detection Row, vertical or other various angles, preferably adapt to wirerope operating condition to be measured.

Preferably, as a kind of implementable solution；The stable state limiting device bracket and sensor have up and down, left and right fine tuning Function.

It should be noted that clamping device 100 and sensor 201 have up and down in stable state limiting device, left referring to Fig. 1 Right fine adjustment function.

Preferably, as a kind of implementable solution；Referring to Fig. 9 and Figure 10, the upper clamping wheel 101 and the lower clamping wheel The 102 body surfaces annular groove that circumferentially wall direction is provided with convenient for wirerope A insertion.

It should be noted that in the specific configuration of clamping device: above-mentioned upper clamping wheel 101 and above-mentioned lower clamping wheel 102 Surface have annular groove；Annular groove at the wheel body periphery of upper clamping wheel 101 and above-mentioned lower clamping wheel 102 along setting Set (i.e. circumferentially wall direction)；The main function of above-mentioned annular groove is easy for wirerope A insertion and along in annular groove Sliding action.

Preferably, as a kind of implementable solution；Referring to Fig. 9 and Figure 10, the upper clamping wheel 101 and the lower clamping wheel 102 be wear wheel.And the upper clamping wheel 101 and the lower clamping wheel 102 are wear-resistant material using material.

It should be noted that in the specific configuration of wire rope standard stable state limiting device: above-mentioned upper clamping wheel 101 and institute It states lower clamping wheel 102 to be intended to be rubbed by between wirerope A, friction will cause abrasion largely for a long time；It is right This above-mentioned upper clamping wheel 101 and the lower clamping wheel 102 it is preferable to use wear wheel (such as: engineering plastic material wheel, nylon wheel, superelevation Molecular weight polyethylene wheel or metal wheel (such as steel construction wheel))；It is high with wear-resistant strength for above-mentioned wear-resistant material, structural rigidity Height, anti-aging property wait by force technical characterstics.Upper and lower clamping wheel can carry out freedom and flexibility rotation as wirerope is walked, this Sample can reduce the friction between wirerope and wheel, and then alleviate frictionally damage.

At least there is the technical advantage of following aspect in wire rope standard stable state limiting device provided by the utility model:

One, wire rope standard stable state limiting device provided by the utility model, by clamping device, detection device and fixation The structures such as loading device, mounting platform are constituted；Wherein, clamping device described in every group be provided with clamping wheel and lower clamping wheel and Support arm；One end of the support arm is fixedly connected on the mounting platform, and the other end of the support arm connects from top to bottom Connect the upper clamping wheel and the lower clamping wheel；For crossing across to be detected between the upper clamping wheel and the lower clamping wheel Wirerope；The detection device includes detection sensor and detection support arm；The detection sensor is arranged in the installation On platform and wirerope to be detected also extends through at the center of the detection sensor；The fixed loading device is used for institute The limit that wirerope carries out in range is stated to act.It will be apparent that above-mentioned clamping device, detection device and fixed loading device, installation The specific structures such as platform are all original designs, and connection relationship between above-mentioned specific structure and positional relationship have rationally Layout designs；Therefore wire rope standard stable state limiting device provided by the embodiment of the utility model, technical construction is more reasonable, And function is more perfect.

Two, wire rope standard stable state limiting device provided by the utility model, wherein clamping device is provided with clamping wheel With lower clamping wheel, it can be realized wirerope to be limited to and centainly enclose interior, reduction vibration.Since wirerope reduces up and down when detection Or the amount of moving left and right can avoid damaging equipment when wirerope concussion in turn.It is reduced since wirerope vibrates, detection data Also more accurate.

Three, wire rope standard stable state limiting device provided by the utility model, the rectangular body limit of fixed loading device It is internal larger away from, width spacing between the upper and lower for frame, avoids wirerope up and down and while moving left and right is damaging equipment.Pass through Real-time online detection in 24 hours may be implemented in wire rope standard stable state limiting device provided by the utility model.

Four, wire rope standard stable state limiting device provided by the utility model, belongs to that safety is higher, reliability is higher Detection technique, application range is also more extensive.

In conclusion wire rope standard stable state limiting device provided by the embodiment of the utility model, has all various Technical advantage, therefore it will bring good market prospects and economic benefit.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (10)

1. a kind of wire rope standard stable state limiting device, which is characterized in that including clamping device, detection device and fixed load dress It sets, mounting platform；The clamping device, the detection device are fixedly connected on the surface of the mounting platform；And it is described Fixed loading device is fixedly connected on the rear of the mounting platform；The clamping device is one group or multiple groups；

Wherein, clamping device described in every group is provided with clamping wheel and lower clamping wheel and support arm；One end of the support arm It is fixedly connected on the mounting platform, the other end of the support arm connects the upper clamping wheel and the lower folder from top to bottom Hold wheel；For crossing across wirerope to be detected between the upper clamping wheel and the lower clamping wheel；

The detection device includes detection sensor and detection support arm；The bottom of the detection support arm and the mounting platform It is fixedly connected, top connects the detection sensor；The detection sensor is arranged on the mounting platform, and to be checked The wirerope of survey also extends through at the center of the detection sensor；The stable state limiting device is for pacifying the wirerope Limit movement in full detection range；The detection sensor includes weak magnetic detection mode, strong Magnetic testi mode, full Magnetic testi side Formula, giant magneto-resistance sensor detection mode, Hall element detection mode, the multiple sensors of electromagnetic detection mode.

2. wire rope standard stable state limiting device as described in claim 1, which is characterized in that the clamping device be one group or Multiple groups are mounted on the left and right ends position of the mounting platform.

3. wire rope standard stable state limiting device as described in claim 1, which is characterized in that the wirerope is one or more Root, and distribution arranged in parallel,

Upper clamping wheel on stable state limiting device described in every group is used to clamp steel cable with the lower clamping wheel being disposed below.

4. wire rope standard stable state limiting device as described in claim 1, which is characterized in that in the structure of the detecting device The quantity of the detection sensor is one or more, the mountable front-rear position in clamping wheel.

5. wire rope standard stable state limiting device as described in claim 1, which is characterized in that the wire rope standard stable state limit Position device, can be parallel or vertical for adapting to wirerope angle change to be detected.

6. wire rope standard stable state limiting device as described in claim 1, which is characterized in that the wire rope standard stable state limit Position device is provided with appliance stand, the detection sensor can be along described device bracket above and below, left and right trim locations.

7. wire rope standard stable state limiting device as described in claim 1, which is characterized in that the detection sensor shape packet Include round, square configuration.

8. wire rope standard stable state limiting device as described in claim 1, which is characterized in that the upper clamping wheel and it is described under The body surfaces of the clamping wheel annular groove that circumferentially wall direction is provided with convenient for wirerope insertion.

9. wire rope standard stable state limiting device as described in claim 1, which is characterized in that the upper clamping wheel and it is described under Clamping wheel is wear wheel.

10. wire rope standard stable state limiting device as described in claim 1, which is characterized in that the upper clamping wheel, it is described under Clamping wheel is wear-resistant material using material.