CN205990192U - Arm position detecting system, crane arm and crane - Google Patents

Abstract

This utility model is related to technical field of crane equipment, particularly to a kind of arm position detecting system, crane arm and crane.Arm position detecting system provided by the utility model, it includes position detecting device, this position detecting device includes some groups of position detection blocks and at least two position detecting switch, wherein, the position detection block at least two position detecting switch and each group position detection block is sequentially arranged each along the telescopic direction of flexible arm joint.This utility model is by changing into serial arrangement by the arrangement of position detecting switch and position detection block by existing parallel arrangement, taking up room of arm position detecting system can effectively be reduced, this not only contributes to enable arm position detecting system to be applied to a greater variety of crane arms, is also beneficial to realize the improvement further to hoisting arm structure.

Description

Arm position detecting system, crane arm and crane

Technical field

This utility model is related to technical field of crane equipment, particularly to a kind of arm position detecting system, crane arm and lifting Machine.

Background technology

Crane arm generally includes a section basic arm and some sections and stretches arm joint, first segment stretch arm joint with respect to basic arm with And can be stretched between adjacent flexible arm joint.Wherein, single-cylinder pin-type erector arm of crane is a kind of common boom frame telescopic system System, it passes through telescoping cylinder (usually telescopic oil cylinder) and to realize successively the flexible arm joint of each section with cylinder pin and the cooperation of arm pin section by section Flexible.And in order to judge to distinguish the position of the flexible arm joint of each section, crane arm generally arranges arm position detecting system to detect each section The position (arm position) of flexible arm joint, more accurately to realize telescoping cylinder with each locking saving flexible arm joint and unblock it is ensured that each save Smoothly the stretching of flexible arm joint.

Arm position detecting system generally includes position detection block (usually metal derby) and for examining to position detection block The position detecting switch surveyed, wherein, position detecting switch is fixedly installed on telescoping cylinder, and position detection block is fixedly installed on each section In flexible arm joint, each quantity of position detection block saving in flexible arm joint and/or permutation and combination method are different, so that position When detection switch detects the position detection block in the flexible arm joint of each section, different arm position detection signals, Jin Erneng can be sent Enough positions judging the flexible arm joint of each section of differentiation.

In the prior art, position detecting switch and position detection block be all using parallel arrangement, namely position detection The orientation of switch and position detection block is each perpendicular to the telescopic direction of flexible arm joint.And this parallel arrangement, take Space is larger, is unfavorable for the arrangement in telescoping cylinder for other devices such as cylinder pin and arm lock locking mechanism it is difficult to meet single cylinder bolt-type The lightweight requirements of crane arm, are unfavorable for the improvement further of single-cylinder pin-type erector arm of crane structure.

To be applied to the arm position detection system of the crane arm with the flexible arm joint of 6 sections in the prior art shown in Fig. 1 a- Fig. 1 e As a example system, this arm position detecting system 3 ' includes two position detecting switch assemblies 31 ' and 6 pairs of position detection block assemblies 32 ', its In：Two position detecting switch assemblies 31 ' are symmetrically disposed on telescoping cylinder 2 ' with regard to telescoping cylinder 2 ' central axis, each position Put detection switch assembly 31 ' and include 3 position detecting switch 311 ', namely arm position detecting system 3 ' includes 6 position detections and opens Close 311 '；6 pairs of position detection block assemblies 32 ' and 6 save flexible arm joint 1 ' and are arranged on correspondingly in the flexible arm joint 1 ' of 6 sections, often Position detection block assembly 32 ' is included with two position detection block assemblies being symmetricly set in flexible arm joint 1 ' central axis both sides 32 ', as shown in Fig. 1 c and Fig. 1 d, the position detection included by block assembly 32 ' is detected in the position in different flexible arm joint 1 ' The quantity of block 321 ' is different and/or permutation and combination method is different, and so, in telescoping cylinder 2 ' telescopic process, each position is detected Switch module 31 ' can detect to position detection block assembly 32 ' in different flexible arm joint 1 ' for the respective side, and energy Enough send different arm position detection signals and be transferred to electrically connect with described position detecting switch assembly 31 ' by arm position detection signal Control device 4 ', control device 4 ' resolves to different arm position information different arm position detection signals, and by with control dress Put the 4 ' display device 5 ' displays electrically connecting, be easy to operator and operated according to arm position information in time.

From Fig. 1 b- Fig. 1 d, this existing arm position detecting system 3 ', 3 in each position detecting switch assembly 31 ' Position detecting switch 311 ' is arranged in order each along the direction perpendicular to telescopic direction, and correspondingly, each position detects block assembly 32 ' In position detection block 321 ' be also arranged in order each along the direction perpendicular to telescopic direction, so, vertical in telescopic direction See on section, each position detecting switch assembly 31 ' needs to take the space of 3 position detecting switch 311 ', two position inspections Slowdown monitoring switch assembly 31 ' adds up, and needs to take the space of 6 position detecting switch 311 '.It can be seen that, this existing arm position detection System 3 ' takes up room larger, and this is unfavorable for the improvement further of hoisting arm structure：On the one hand lead to arm position detecting system 3 ' difficult To be applied to the crane arm compared with small dimension；On the other hand, due to limited space on the vertical cross-section of telescopic direction, and except pacifying Dress arm position detecting system 3, also will install other devices such as cylinder pin and arm lock locking mechanism, therefore, take up room larger, can lead to The installation site of arm position detecting system 3 ' is more fixing, and motility is poor, be also unfavorable for cylinder pin and arm lock locking mechanism etc. other The installation arrangement of device.

Utility model content

A technical problem to be solved in the utility model is：Existing arm position detecting system, its position detecting switch With position detection block all using parallel arrangement, take up room larger, be unfavorable for the improvement further of hoisting arm structure.

In order to solve above-mentioned technical problem, this utility model first aspect provides a kind of arm position detecting system, for examining Survey the position of the flexible arm joint of each section of crane arm, it includes position detecting device, position detecting device includes some groups of positions inspections Survey block and at least two position detecting switch, wherein：Some groups of position detection blocks are used for the flexible arm joint one with each section of crane arm One correspondingly connected and every group of position detection block can be moved with corresponding flexible arm joint, included by the detection block of each group position The quantity of position detection block is different and/or permutation and combination method is different；At least two position detecting switch are used for and crane arm Telescoping cylinder connects and can move together with telescoping cylinder, during moving with telescoping cylinder, at least two position detections Switch can be detected to each group position detection block and be sent different arm position detection signals, to distinguish the flexible arm joint of each section Position；Position detection block at least two position detecting switch and each group position detection block is each along the flexible side of flexible arm joint To being sequentially arranged.

Alternatively, position detecting device includes 3 position detecting switch.

Alternatively, arm position detecting system also includes Mark Detection device, and Mark Detection device is used for verifying the inspection of each arm position When each position detection block whether survey signal be in every group of position detection block is alignd with corresponding position detecting switch respectively Send.

Alternatively, Mark Detection device includes Mark Detection switch and some group mark detection blocks, wherein：Some group marks Detection block is used for being connected to correspondingly in the flexible arm joint of some sections and every group mark detection block with some groups of position detection blocks Can move together with corresponding flexible arm joint；Mark Detection is switched for being connected with telescoping cylinder and can be with telescoping cylinder one Play motion, during moving with telescoping cylinder, Mark Detection switch can detect to each group Mark Detection block；Work as mark When will detection switch detects each group Mark Detection block, each in every group of position detection block corresponding with every group mark detection block Position detection block is alignd with corresponding position detecting switch respectively.

Alternatively, Mark Detection block along telescopic direction be smaller in size than or be equal to position detection block along telescopic direction chi Very little.

Alternatively, every group mark detection block and other quantity of Mark Detection block included by group mark detection block and arrangement Compound mode all same.

Alternatively, the quantity of Mark Detection switch is 1, and every group mark detection block includes 1 Mark Detection block.

Alternatively, Mark Detection device and position detecting device are located at the both sides of the central axis of telescoping cylinder respectively.

Alternatively, arm position detecting system is also included for being connected to the hyperextension detection means that minor details are stretched in arm joint, hyperextension Detection means is used for preventing telescoping cylinder hyperextension, and the flexible arm joint of minor details is to stretch along the direction of stretching out of flexible arm joint positioned at some sections The flexible arm joint at arm joint end.

Alternatively, hyperextension detection means includes hyperextension mark block, hyperextension mark block be used for minor details stretch arm joint be connected and Stretch out, along flexible arm joint, the afterbody that direction is located at the corresponding one group of position detection block of arm joint of stretching with minor details, and work as telescoping cylinder During hyperextension, at least two position detecting switch detect hyperextension mark block and send the hyperextensions different from each arm position detection signal and refer to Show signal.

Alternatively, the quantity of hyperextension mark block is more than or equal to the quantity with position detecting switch, and the detection of each group position In block, the quantity of position detection block is respectively less than the quantity of position detecting switch.

This utility model second aspect additionally provides a kind of crane arm.This crane arm includes basic arm, is connected to basic arm On some sections stretch arm joint, for controlling the flexible arm joint of each section to carry out flexible telescoping cylinder it is characterised in that crane arm also wraps Include arm position detecting system of the present utility model.

This utility model third aspect additionally provides a kind of crane.This crane includes crane arm of the present utility model.

This utility model by being changed the arrangement of position detecting switch and position detection block by existing parallel arrangement It is changed into serial arrangement, can effectively reduce taking up room so that position detecting switch can be limited of arm position detecting system More flexible and changeable arrangement is realized in installing space.And be easy to arrange other devices such as cylinder pin, this not only contributes to make Arm position detecting system can be applied to a greater variety of crane arms, is also beneficial to realize the improvement further to hoisting arm structure.

By being described in detail to exemplary embodiment of the present utility model referring to the drawings, of the present utility model its Its feature and its advantage will be made apparent from.

Brief description

In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment Or in description of the prior art the accompanying drawing of required use be briefly described it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, before not paying creative labor Put, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 a illustrates the top view in prior art with the crane arm of arm position detecting system.

Fig. 1 b illustrates the side view of position detecting switch assembly in Fig. 1.

Fig. 1 c illustrates the side view of the position detection block assembly in the flexible arm joint of a section in Fig. 1.

Fig. 1 d illustrates that the side view of block assembly is detected in the position that in Fig. 1, another section stretches in arm joint.

Fig. 1 e illustrates the electrical connection schematic diagram of the arm position detecting system in Fig. 1.

Fig. 2 a illustrates that this utility model one embodiment has the top view of the crane arm of arm position detecting system.

Fig. 2 b illustrates the electrical connection schematic diagram of arm position detecting system shown in Fig. 2 a.

View when Fig. 2 c illustrates that in Fig. 2 a, telescoping cylinder does not put in place.

Fig. 3 a illustrates the arm position detecting system view that flexible arm joint is detected to first segment in Fig. 2 a.

Fig. 3 b illustrates the arm position detecting system view that flexible arm joint is detected to second section in Fig. 2 a.

Fig. 3 c illustrates the view that in Fig. 2 a, arm position detecting system is detected to Section of three flexible arm joint.

In figure：

1 ', flexible arm joint；2 ', telescoping cylinder；3 ', arm position detecting system；31 ', position detecting switch assembly；311 ', position Detection switch；32 ', position detection block assembly；321 ', position detection block；4 ', control device；5 ', display device；

1st, flexible arm joint；2nd, telescoping cylinder；3rd, arm position detecting system；31st, position detecting device；311st, position detecting switch； 311a, primary importance detection switch；311b, second position detection switch；311c, the 3rd position detecting switch；312nd, position inspection Survey block；32nd, Mark Detection device；321st, Mark Detection switch；322nd, Mark Detection block；4th, control device；5th, display device.

Specific embodiment

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Description only actually at least one exemplary embodiment is illustrative below, never as to this practicality Any restriction that is new and its applying or use.Based on the embodiment in this utility model, those of ordinary skill in the art are not having There is the every other embodiment being obtained under the premise of carrying out creative work, broadly fall into the scope of this utility model protection.

May be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable When in the case of, described technology, method and apparatus should be considered authorize description a part.

It is to be understood that the noun of locality such as " forward and backward, upper and lower, left and right ", " laterally, in description of the present utility model Vertically, vertically the orientation indicated by, level " and " top, bottom " etc. or position relationship are normally based on orientation shown in the drawings or position Put relation, be for only for ease of description this utility model and simplify description, in the case of illustrating on the contrary, these nouns of locality Do not indicate that and imply the device of indication or element must have specific orientation or with specific azimuth configuration and operation, because This is it is not intended that restriction to this utility model protection domain；The noun of locality " inside and outside " refers to respect to each part wheel of itself Wide is inside and outside.

It is to be understood that limiting zero using the word such as " first ", " second " in description of the present utility model Part, it is only for be easy to corresponding parts are distinguished, such as do not have Stated otherwise, above-mentioned word does not have particular meaning, Therefore it is not intended that restriction to this utility model protection domain.

Arm position detecting system 3 provided by the utility model, the position of the flexible arm joint 1 of each section for detecting crane arm. Fig. 2 a- Fig. 3 c shows the arm position detecting system of this utility model one embodiment.Reference picture 2a- Fig. 3 c, arm of the present utility model Position detecting system 3 includes position detecting device 31, and position detecting device 31 includes some groups of position detection blocks 312 and at least two Position detecting switch 311, wherein：This some groups of position detection blocks 312 are used for the flexible arm joint 1 with each section of crane arm and correspond Ground connects and every group of position detection block 312 can be moved with corresponding flexible arm joint 1, included by each group position detection block 312 Position detection block 312 quantity different and/or permutation and combination method is different；This at least two position detecting switch 311 is used for It is connected with telescoping cylinder 2 and can be with moving together with telescoping cylinder 2, during with telescoping cylinder 2 motion, this at least two Put detection switch 311 each group position detection block 312 can be detected and be sent different arm position detection signals, each to distinguish The position of the flexible arm joint 1 of section；Position detection block in this at least two position detecting switch 311 and each group position detection block 312 312 are sequentially arranged each along the telescopic direction of flexible arm joint 1.

Arm position detecting system 3 of the present utility model, its position detecting switch 311 and position detection block 312 are each along flexible Direction is sequentially arranged, namely in this utility model, position detecting switch 311 and position detection block 312 are all arranged using serial Mode, with respect to parallel arrangement of the prior art, can effectively reduce taking up room of arm position detecting system 3, favorably In the improvement further to hoisting arm structure for the realization：On the one hand, this makes the arm position detecting system 3 of the present utility model can not only It is applied to the crane arm of hoister in large tonnage it is also possible to be applied to the crane arm of less tonnage crane, can effective extensible arm The scope of application of position detecting system 3；On the other hand, be conducive to making crane arm more lightweight and miniaturization, contribute to improving The performance of weighing arm；Another further aspect, can also make mounting arrangements mode on telescoping cylinder 2 for the position detecting switch 311 more flexible, It is easily installed arrangement other devices such as cylinder pin and arm lock locking mechanism.

In order to improve the detection accuracy of arm position detecting system, arm position detecting system 3 of the present utility model can also include Mark Detection device 32, this Mark Detection device 32 is used for verifying whether each arm position detection signal is in every group of position detection block Each position detection block 312 in 312 is sent when being alignd with a corresponding position detecting switch 311 respectively.By setting This Mark Detection device 32, ensure that each arm position detection signal is each position detection in each group position detection block 312 That block 312 is sent when just being alignd with corresponding position detecting switch 311 respectively such that it is able to prevent because serial arrangement position Detection switch 311 and position detection block 312 occur dislocation to cause arm position to judge by accident, and then can effectively improve arm position detecting system It is ensured that telescoping cylinder 2 more accurately can be coordinated with cylinder pin and arm pin, control realization is each to save flexible arm joint 1 to 3 detection accuracy More successfully stretch.

Additionally, arm position detecting system 3 of the present utility model can also include hyperextension detection means, this hyperextension detection means is even It is connected to minor details to stretch in arm joint 1, be used for preventing telescoping cylinder 2 hyperextension.In this utility model, minor details stretch arm joint 1 refer to along The direction of stretching out of flexible arm joint 1 is located at some flexible arm joint 1 saving flexible arm joint 1 end.Because this hyperextension detection means is permissible Prevent telescoping cylinder 2 extend out to minor details stretch arm joint 1 precalculated position when continue to stretch out (namely hyperextension), therefore, this utility model Arm position detecting system 3 can be prevented effectively from telescoping cylinder 2 collide with crane arm end etc. because hyperextension occurs such that it is able to Effectively reduce the risk of device damage, be conducive to improving the job security of crane arm.

As a kind of embodiment of hyperextension detection means, hyperextension detection means can include hyperextension mark block, hyperextension mark Show block be used for minor details stretch arm joint 1 connect and along flexible arm joint 1 stretch out direction be located at minor details stretch arm joint 1 corresponding The afterbody of one group of position detection block 312, and when telescoping cylinder 2 hyperextension, aforementioned at least two position detecting switch 311 detected Stretch mark block and send the hyperextension indication signals different from each arm position detection signal.Based on this, right by position detecting switch 311 The detection of hyperextension mark block, can find in time in telescoping cylinder 2 hyperextension, and controls telescoping cylinder in time according to hyperextension indication signal 2 continue to stretch out.

And in order that hyperextension indication signal and each arm position detection signal all differ, quantity can be set and examine with each group position Survey all different hyperextension mark block of quantity of position detection block 312 in block 312, for example, it is possible to make hyperextension mark block quantity big In or be equal to quantity with position detecting switch 311, and in each group position detection block 312, the quantity of position detection block 312 is all little In the quantity of position detecting switch 311, based on this, can easily and conveniently distinguish hyperextension indication signal and each arm position detection letter Number.Certainly, the implementation that hyperextension indication signal is different from each arm position detection signal is made to be not limited thereto, as long as actually mistake Stretch instruction block different from the quantity of each group position detection block 312 and/or permutation and combination method.

Arm position detecting system 3 of the present utility model is carried out further with reference to the embodiment shown in Fig. 2 a- Fig. 3 c Explanation.In order to describe simplicity, the crane arm that this embodiment is only applied to have the flexible arm joint 1 of 6 sections with arm position detecting system 3 is Example illustrates, and the crane arm that arm position detecting system 3 is applied to have the flexible arm joint 1 of other joint numbers is referred to this embodiment Understood, here is omitted.

As shown in Fig. 2 a- Fig. 3 c, in this embodiment, arm position detecting system 3 includes position detecting device 31, Mark Detection Device 32 and hyperextension detection means.

Wherein, position detecting device 31 is used for the position of the flexible arm joint 1 of each section is detected.As shown in Figure 2 a, at this In embodiment, position detecting device 31 includes 6 groups of position detection blocks 312 and 3 position detecting switch 311, wherein：6 groups of positions Detection block 312 is used for that arm joint 1 flexible with the 6 of crane arm sections is connected correspondingly and every group of position detection block 312 can be with Corresponding flexible arm joint 1 is moved along telescopic direction；3 position detecting switch 311 are then used for being connected with telescoping cylinder 2 and can be with Telescoping cylinder 2 to move along telescopic direction together, so in telescoping cylinder 2 telescopic process, 3 position detecting switch 311 can Each group position detection block 312 is detected.

In order to distinguish each flexible arm joint 1, setting quantity difference and/or permutation and combination method in each group position detection block 312 Different position detection blocks 312.For convenience, herein by 3 be arranged in order along retracted orientation position detecting switch 311 are referred to as primary importance detection switch 311a, second position detection switch 311b and the 3rd position detecting switch 311c.As Shown in Fig. 3 a- Fig. 3 c, in this embodiment, the flexible arm joint 1 of first segment is provided with and primary importance detection switch 311a and the 3rd Position detecting switch 311c corresponding two position detection blocks 312 respectively, the flexible arm joint 1 of second section is provided with and primary importance inspection Slowdown monitoring switch 311a and second position detection switch 311b corresponding two position detection blocks 312 respectively, in Section of three flexible arm joint 1 Be provided only with a position detection block 312 corresponding with the 3rd position detecting switch 311c, Section of four flexible arm joint 1 is provided only with The corresponding position detection block 312 of second position detection switch 311b, Section of five flexible arm joint 1 is provided with and second position inspection Slowdown monitoring switch 311b and the 3rd position detecting switch 311c corresponding two position detection blocks 312 respectively, in Section of six flexible arm joint 1 Then it is provided only with a position detection block 312 corresponding with primary importance detection switch 311a.By making in the flexible arm joint 1 of each section The quantity of position detection block 312 and/or permutation and combination method are different, and every group of position detection block 312 can be enable to distinguish reflection The arm position information of corresponding flexible arm joint 1, thus detect to each group position detection block 312 in 3 position detecting switch 311 When, different arm position detection signals can be sent, realize the differentiation to the flexible arm joint 1 of each section.

And, as shown in Figure 2 b, 3 position detecting switch 311 are electrically connected with control device 4, control device 4 again with display Device 5 electrically connects, and therefore, each arm position detection signal can be transferred to control device 4 by 3 position detecting switch 311, control dress Put 4 and judge whether telescoping cylinder 2 reaches the precalculated position specifying flexible arm joint 1 according to received arm position detection signal, and then Telescoping cylinder 2 is controlled to realize the flexible of corresponding flexible arm joint 1 to cylinder pin and the cooperation of arm pin, meanwhile, arm position can be believed by control device 4 Breath is transferred to display device 5 and is shown, facilitates operator to check judgement.

From Fig. 2 a and Fig. 2 b, in 3 position detecting switch 311 of this embodiment and each group position detection block 312 Position detection block 312 is sequentially arranged each along the telescopic direction of flexible arm joint 1, namely in this embodiment, position detecting switch 311 and position detecting switch 312 adopts serial arrangement so that position detecting device of the present utility model 31 is flexible On the vertical cross-section in direction, only need to take the space of 1 position detecting switch 311, with respect to arrangement side parallel in prior art Formula needs to take the situation in 6 position detecting switch 311 spaces, can effectively reduce taking up room of arm position detecting system 3, have Beneficial to the structure improving crane arm further, realize lightweight and the miniaturization of crane arm further, and position detection is opened Close 311 mounting means on telescoping cylinder 2 more flexible.

Mark Detection device 32 is used for improving the detection accuracy of position detecting device 31.As shown in Figure 2 a and 2 b, exist In this embodiment, Mark Detection device 32 includes Mark Detection and switchs 321 and 6 group mark detection blocks 322, wherein：6 group mark inspections Survey block 322 to be used for being connected to correspondingly in the flexible arm joint 1 of 6 sections and every group mark detection block with 6 groups of position detection blocks 312 322 can move together with corresponding flexible arm joint 1；Mark Detection switch 321 is used for being connected with telescoping cylinder 2 and can be with Telescoping cylinder 2 moves together, and during with telescoping cylinder 2 motion, Mark Detection switch 321 can be to each group Mark Detection block 322 are detected；And when Mark Detection switch 321 detects each group Mark Detection block 322, with every group mark detection block 322 Each position detection block 312 in corresponding every group of position detection block 312 is alignd with corresponding position detecting switch 311 respectively.

Based on this setting, Mark Detection device 32 can be by Mark Detection switch 321 to each group Mark Detection block 322 Detection carrys out the accuracy of checksum location detection means 31 testing result it is ensured that arm position detection signal is in every group of position detection block Each position detection block 312 in 312 is sent when just being alignd with corresponding position detecting switch 311 respectively, prevents because of string The position detecting switch 311 of row arrangement and position detection block 312 occur dislocation to cause arm position to judge by accident, improve arm position detecting system 3 detection accuracy, enables telescoping cylinder 2 more accurately to coordinate with cylinder pin and arm pin it is ensured that the flexible arm joint 1 of each section is more smooth Ground stretches.

And in order to ensure " when Mark Detection switch 321 detects each group Mark Detection block 322, with the detection of every group mark Each position detection block 312 in the corresponding every group of position detection block 312 of block 322 respectively with corresponding position detecting switch 311 Alignment ", Mark Detection block 322 being smaller in size than or equal to position detection block 312 along flexible side along telescopic direction of this embodiment To size, namely the L1≤L2 shown in Fig. 3 a, so when Mark Detection switch 321 is alignd with Mark Detection block 322, position Detection block 312 also can be alignd with position detecting switch 311, namely when Mark Detection switch 321 enters the flexible arm joint 1 of certain section When in the detection zone of Mark Detection block 322, position detecting switch 311 also can be simultaneously into the position of arm joint 1 of accordingly stretching Put the detection zone of detection block 312 so that when telescoping cylinder 2 reaches predetermined arm position, Mark Detection device 32 is filled with position detection Put 31 and all can send detection signal, by verifying two kinds of signals, it is possible to achieve Mark Detection device 32 is to position detecting device 31 verification, preventing arm position is judged by accident.In order to describe simplicity, in this utility model, signal that Mark Detection device 32 is sent Referred to as arm bit flag signal, the signal that position detecting device 31 is sent is referred to as arm position detection signal.

Based on this Mark Detection device 32, only all send detection letter in Mark Detection device 32 and position detecting device 31 Number when, just judge that telescoping cylinder 2 reaches predetermined arm position, because arm bit flag signal can verify to arm position detection signal, Therefore, it is possible to effectively prevent from, because to judge the erroneous judgement problem caused by the information of arm position only in accordance with arm position detection signal, improving arm position The accuracy of detecting system 3 testing result.

In this utility model, every group mark detection block 322 and other Mark Detection included by group mark detection block 322 The quantity of block 322 and permutation and combination method can be identical, but in order to simplify checking procedure, simplify the knot of Mark Detection device 32 Structure, preferably every group mark detection block 322 and other quantity of Mark Detection block 322 included by group mark detection block 322 and Permutation and combination method is identical, and so in telescoping cylinder 2 telescopic process, each corresponding arm bit flag signal of arm joint 1 that stretches that saves is identical, And only arm position detection signal is different, therefore it is easier to judge to distinguish the flexible arm joint 1 of each section.From Fig. 2 a, in this embodiment In, the quantity of Mark Detection switch 321 is 1, and every group mark detection block 322 all only includes 1 Mark Detection block 322, so The flexible corresponding arm bit flag signal of arm joint 1 of each section not only can be made identical, simplify checking procedure, and more with respect to arranging The Mark Detection switch 321 of quantity and the situation of Mark Detection block 322, due to Mark Detection switch 321 and Mark Detection block 322 Negligible amounts, and hence it is also possible to simplify Mark Detection device 32 structure, and reduce Mark Detection device 32 shared by sky Between.

Additionally, as shown in Figure 2 a, in this embodiment, Mark Detection device 32 and position detecting device 31 are located at respectively and stretch The both sides of the central axis of contracting cylinder 2.So setting is advantageous in that, Mark Detection device 32 is not mutually done with position detecting device 31 Relate to, detection structure is more accurate, and be based on this, only need to be in telescoping cylinder 2 side set location detection switch 311 and position detection block 312, it is respectively provided with position detecting switch and the situation of position detection block, the position inspection of this embodiment with respect to both sides in prior art Survey device 31 and take up room less, structure is also simpler.

State when Fig. 2 c illustrates that in this embodiment, telescoping cylinder does not put in place.Understand in conjunction with Fig. 2 a and Fig. 2 c, when telescoping cylinder 2 does When stretching motion finds arm position, if Mark Detection switch 321 is not detected by Mark Detection block 322, namely arm bit flag signal When not being triggered, illustrate that telescoping cylinder 2 not yet puts in place, i.e. not yet arm entry position detectable region, therefore, arm position detection letter now Number it is not adoptable；Until Mark Detection switch 321 enters Mark Detection block 322 detection zone of the flexible arm joint 1 of certain section, quilt Mark Detection block 322 triggers, and sends arm bit flag signal, and just now telescoping cylinder 2 puts in place, at this moment, in this flexible arm joint 1 for explanation Each position detection block 312 align with corresponding position detecting switch 311, trigger corresponding position detecting switch 311, send arm Position detection signal, because position detection block 312 permutation and combination method in the flexible arm joint 1 of every section is different, so, by arm position The parsing of detection signal is so that it may obtain specific arm position information.It can be seen that, by arranging Mark Detection device 32, it is possible to achieve right The verification of position detecting device 31 is so that only when arm bit flag signal is simultaneously emitted by with arm position detection signal, just think arm Position detection signal is accurately such that it is able to prevent dislocation erroneous judgement.

In actual use, before the dead telescoping cylinder of cylinder lock 2 flexible arm joint 1 with a certain section, arm position can be examined Survey signal and arm bit flag signal carries out parsing and obtains arm position information, and now telescoping cylinder 2 has reached this to point out operator accordingly The predetermined arm position of the flexible arm joint 1 of section, can carry out cylinder lock and extremely operate；In cylinder lock after death, can also be locked by verifying The arm position the information whether locked signal of flexible arm joint is obtained with aforementioned foundation arm position detection signal and arm bit flag signal resolution Unanimously, come arm position information is carried out with checking again, when the arm position that the two indicates is identical, represent that arm position signal is normal；When Then it represents that arm position abnormal signal, alarm operator when the arm position of the two instruction is different.Detection so can be further noted that Accuracy.

Hyperextension detection means is used for preventing telescoping cylinder 2 hyperextension.In this embodiment, hyperextension detection means includes 4 hyperextensions Mark block, this 4 hyperextension mark blocks are arranged on minor details and stretch in arm joint 1 (namely the flexible arm joint 1 of Section 6), and along flexible side To the end being located at the corresponding one group of position detection block 312 of arm joint 1 of stretching with minor details.From Fig. 3 a- Fig. 3 c, in this embodiment In, the quantity of hyperextension mark block 311 is more than the quantity of position detecting switch 311, and position detection in each group position detection block 312 The quantity of block 312 is respectively less than the quantity of position detecting switch 311, and therefore, when telescoping cylinder 2 occurs hyperextension, 3 position detections are opened Close each arm position detection letter being sent when the 311 hyperextension indication signals being sent normally are detected with arm joint 1 flexible to each section Number all differ, distinguish hyperextension operating mode and normal flexible operating mode therefore, it is possible to effective, in order to finding in time and stopping stretching Cylinder 2 hyperextension.

The work process of the arm position detecting system 3 of this embodiment to be described with reference to Fig. 3 a- Fig. 3 c.

Telescoping cylinder 2 move to first segment stretch arm joint 1 precalculated position when, primary importance detection switch 311a and the 3rd Put detection switch 311c to be triggered, meanwhile, Mark Detection switch 321 is triggered；Telescoping cylinder 2 moves to the flexible arm joint 1 of second section Precalculated position when, primary importance detection switch 311a and second position detection switch 311b are triggered, and meanwhile, Mark Detection is opened Close 321 to be triggered；When telescoping cylinder 2 moves to the precalculated position of Section of three flexible arm joint 1, the 3rd position detecting switch 311c is touched Send out, meanwhile, Mark Detection switch 321 is triggered；When telescoping cylinder 2 moves to the precalculated position of Section of four flexible arm joint 1, second Put detection switch 311b to be triggered, meanwhile, Mark Detection switch 321 is triggered；Telescoping cylinder 2 moves to Section of five flexible arm joint 1 Precalculated position when, second position detection switch 311b and the 3rd position detecting switch 311c are triggered, and meanwhile, Mark Detection is opened Close 321 to be triggered；When telescoping cylinder 2 moves to the precalculated position of Section of six flexible arm joint 1, primary importance detection switch 311a is touched Send out, meanwhile, Mark Detection switch 321 is triggered；When telescoping cylinder 2 hyperextension, Mark Detection switch 321 is not triggered, and first Position detecting switch 311a, second position detection switch 311b and the 3rd position detecting switch 311c are all touched by hyperextension mark block Send out, namely when 3 position detecting switch 311 are all triggered Mark Detection switch 321 is not triggered when then it is assumed that telescoping cylinder 2 It is in hyperextension state, stopping telescoping cylinder 2 now can be controlled in time to continue to stretch out.

In order to be shown more clearly that detection process, by the testing result to the flexible arm joint of each section for the said arm position detecting system 3 Be listed as follows, wherein T1, T2, T3, T4, T5 and T6 represent respectively aforementioned first segment stretch arm joint 1, second section stretch arm joint 1, the The flexible arm joint 1 of three sections, Section of four flexible arm joint 1, Section of five flexible arm joint 1 and Section of six flexible arm joint 1.

Table 1 arm position detecting system testing result

As shown in Table 1, position detecting device 31 and Mark Detection device 32 cooperation are capable of flexible arm joint 1 arm to each section Level really is distinguished, and position detecting device 31 can also prevent from stretching with Mark Detection device 32 and the cooperation of hyperextension detection means Cylinder 2 hyperextension is it is ensured that system operational security.

It can be seen that, the arm position detecting system 3 of this embodiment, only need 3 position detecting switch 311 and 1 Mark Detection switch 321 can complete the detection to the flexible arm joint 1 of 6 sections, can effectively distinguish the position of the flexible arm joint 1 of each section, with respect to existing The situation of 6 position detecting switch is needed, the structure of the arm position detecting system 3 of this embodiment is simpler in technology；And, by Adopt serial arrangement in position detecting switch 311, on the vertical cross-section of telescopic direction, the arm position detection system of this embodiment System 3 need to take the space of 2 switches, and the arm position detecting system of existing parallel arrangement then needs to take 6 switch spaces, institute So that the space shared by arm position detecting system 3 of this embodiment is less, is more beneficial for the improvement further of hoisting arm structure.

It should be noted that when being applied to the crane arm of the flexible arm joint 1 with different joint numbers, position of the present utility model The quantity of the group number and position detecting switch 311 of putting detection block 312 can carry out increasing according to the joint number of flexible arm joint 1 and add deduct Few, as long as the group number of guarantee position detection block 312 is identical with flexible arm joint 1 joint number, and the quantity of position detecting switch 311 is at least Can produce and flexible arm joint 1 joint number identical compound mode, correspondingly, the quantity of hyperextension mark block can also be according to reality Border needs to arrange, as long as guaranteeing to distinguish hyperextension indication signal and each arm position detection signal；And, each group position will be realized Quantity difference and/or the permutation and combination method of putting position detection block 312 in detection block 312 are different, have multiple set-up modes, figure 3a- Fig. 3 c illustrate only one of which, does not constitute to restriction of the present utility model；Additionally, aforementioned location detection switch 311 He Aforementioned Mark Detection switch 321, both can be proximity switch it is also possible to be travel switch, or can also be one of For proximity switch, another is travel switch；Position detecting switch 311 and Mark Detection switch 321 can be directly connected to stretch It is also possible to be connected in the mounting seat being connected with telescoping cylinder 2 on contracting cylinder 2.

This utility model second aspect additionally provides a kind of crane arm.This crane arm includes basic arm, is connected to basic arm On some sections stretch arm joint 1, for controlling the flexible arm joint 1 of each section to carry out flexible telescoping cylinder 2 and arm of the present utility model Position detecting system 3.

This utility model third aspect additionally provides a kind of crane.This crane includes crane arm of the present utility model.

The foregoing is only exemplary embodiment of the present utility model, not in order to limit this utility model, all in this reality Within new spirit and principle, any modification, equivalent substitution and improvement made etc., should be included in of the present utility model Within protection domain.

Claims (13)

1. a kind of arm position detecting system (3), each section for detecting crane arm stretch arm joint (1) position it is characterised in that institute State arm position detecting system (3) and include position detecting device (31), described position detecting device (31) includes some groups of position detections Block (312) and at least two position detecting switch (311), wherein：Described some groups of position detection blocks (312) are used for and described The flexible arm joint (1) of each section of weighing arm connects correspondingly and every group of position detection block (312) can be with corresponding telescopic arm Section (1) motion, the quantity difference of the position detection block (312) included by each group position detection block (312) and/or permutation and combination side Formula is different；Described at least two position detecting switch (311) are used for being connected with the telescoping cylinder (2) of described crane arm and can be with Described telescoping cylinder (2) is moved together, and during with described telescoping cylinder (2) motion, described at least two position detections are opened Close (311) each group position detection block (312) can be detected and be sent different arm position detection signals, stretched with distinguishing each section The position of contracting arm joint (1)；Position inspection in described at least two position detecting switch (311) and each group position detection block (312) The telescopic direction surveying block (312) each along described flexible arm joint (1) is sequentially arranged.

2. arm position detecting system (3) according to claim 1 is it is characterised in that described position detecting device (31) includes 3 Individual described position detecting switch (311).

3. arm position detecting system (3) according to claim 1 is it is characterised in that described arm position detecting system (3) also includes Mark Detection device (32), described Mark Detection device (32) is used for verifying whether each described arm position detection signal is at every group Each position detection block (312) in position detection block (312) is sent when being alignd with corresponding position detecting switch (311) respectively 's.

4. arm position detecting system (3) according to claim 3 is it is characterised in that described Mark Detection device (32) includes Mark Detection switch (321) and some group mark detection blocks (322), wherein：Described some group mark detection blocks (322) be used for Described some groups of position detection blocks (312) are connected to the upper and every group mark of the flexible arm joint (1) of described some sections correspondingly and examine Survey block (322) to move together with corresponding flexible arm joint (1)；Described Mark Detection switch (321) is used for stretching with described Contracting cylinder (2) connects and can move together with described telescoping cylinder (2), during with described telescoping cylinder (2) motion, institute State Mark Detection switch (321) each group Mark Detection block (322) can be detected；When described Mark Detection switchs (321) When each group Mark Detection block (322) is detected, in every group of position detection block (312) corresponding with every group mark detection block (322) Each position detection block (312) align with corresponding position detecting switch (311) respectively.

5. arm position detecting system (3) according to claim 4 is it is characterised in that described Mark Detection block (322) is along described Telescopic direction be smaller in size than or be equal to described position detection block (312) along described telescopic direction size.

6. arm position detecting system (3) according to claim 4 it is characterised in that every group mark detection block (322) and other The quantity of Mark Detection block (322) included by group mark detection block (322) and permutation and combination method all same.

7. arm position detecting system (3) according to claim 6 is it is characterised in that described Mark Detection switchs the number of (321) Measure as 1, and every group mark detection block (322) includes 1 Mark Detection block (322).

8. arm position detecting system (3) according to claim 3 is it is characterised in that described Mark Detection device (32) and institute State the both sides that position detecting device (31) is located at the central axis of described telescoping cylinder (2) respectively.

9. according to the arbitrary described arm position detecting system (3) of claim 1-8 it is characterised in that described arm position detecting system (3) Also include for being connected to the hyperextension detection means that minor details are stretched in arm joint (1), described hyperextension detection means is used for preventing described Telescoping cylinder (2) hyperextension, described minor details stretch arm joint (1) be along described flexible arm joint (1) stretch out direction be located at described some The flexible arm joint (1) at flexible arm joint (1) end of section.

10. arm position detecting system (3) according to claim 9 is it is characterised in that described hyperextension detection means includes hyperextension Mark block, described hyperextension mark block is used for arm joint (1) flexible with described minor details and is connected and stretching out along described flexible arm joint (1) Direction is located at the afterbody of the corresponding one group of position detection block (312) of arm joint (1) of stretching with described minor details, and works as described telescoping cylinder (2), during hyperextension, described at least two position detecting switch (311) detect described hyperextension mark block and send and each described arm position The different hyperextension indication signal of detection signal.

11. arm position detecting systems (3) according to claim 10 are it is characterised in that the quantity of described hyperextension mark block is big In or be equal to quantity with described position detecting switch (311), and position detection block (312) in each group position detection block (312) Quantity be respectively less than described position detecting switch (311) quantity.

A kind of 12. crane arms, including basic arm, some sections of being connected on described basic arm stretch arm joint (1), be used for controlling each The flexible arm joint (1) of section carries out flexible telescoping cylinder (2) it is characterised in that described crane arm also includes claim 1-11 such as appoints Arm position detecting system (3) described in one.

A kind of 13. cranes are it is characterised in that include crane arm as claimed in claim 12.