CN206787765U - One kind wheel is to non-equilibrium site phase detection device - Google Patents

One kind wheel is to non-equilibrium site phase detection device Download PDF

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Publication number
CN206787765U
CN206787765U CN201720536311.9U CN201720536311U CN206787765U CN 206787765 U CN206787765 U CN 206787765U CN 201720536311 U CN201720536311 U CN 201720536311U CN 206787765 U CN206787765 U CN 206787765U
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China
Prior art keywords
wheel
equilibrium site
axletree
link
detection device
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CN201720536311.9U
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Chinese (zh)
Inventor
蔡卫星
孙道永
张峰
徐锋
朱崇飞
陈殿苹
梁晓燕
赵永强
向琴
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CRRC Qingdao Sifang Co Ltd
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CRRC Qingdao Sifang Co Ltd
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Abstract

The utility model discloses one kind wheel to non-equilibrium site phase detection device, include the beam emissions portion and beam reception portion of at least one pair of mutual cooperation;Beam emissions portion and beam reception portion include pointer, and pointer can be directed at the non-equilibrium site of wheel to be measured or brake disc;Beam emissions portion also includes light-beam transmitter, and beam reception portion also includes the display screen with angle index;Light-beam transmitter is connected by the first link with the second link with corresponding pointer respectively with display screen;The light beam that light-beam transmitter is sent is parallel to axletree and vertically invests the display screen with detection wheel to non-equilibrium site phase.The wheel can be with detection wheel to the non-equilibrium site phase between two brake discs, between two wheels and between wheel and brake disc of the axletree with one end to non-equilibrium site phase detection device, and there is the higher degree of accuracy, the assembling quality of wheel pair can be effectively improved, so as to improve the security of rail vehicle operation.

Description

One kind wheel is to non-equilibrium site phase detection device
Technical field
It the utility model is related to rail vehicle technical field, and in particular to one kind wheel fills to non-equilibrium site phase-detection Put.
Background technology
Railway vehicle wheel to including axletree, be placed on two wheels at axletree both ends, each wheel is equipped with one and is used to brake Brake disc, two brake discs are also placed on axletree both ends, and are axially located along axletree on the inside of wheel.Take turns the pass to belonging to rail vehicle Key core component, the assembling quality taken turns pair directly affect the safe for operation of rail vehicle.
Certain amount of unbalance occurs in wheel and brake disc manufacturing process, the position that amount of unbalance be present is labeled Out, marker location is referred to as non-equilibrium site, in wheel between two wheels in assembling process, between two brake discs and axletree With the differential seat angle of non-equilibrium site between end wheel and brake disc, referred to as take turns to non-equilibrium site phase, in order to ensure wheel to dress With quality need take turns to assembling when and wheel to assembling after to wheel to carry out non-equilibrium site phase-detection.
If wheel pair non-equilibrium site phase it is larger will cause wheel pair vibration abrasion and orbital member abrasion, directly Influence train operating safety is connect, in order to take turns the balance to entirety, it is 180 ° to take turns to theoretical non-equilibrium site phase, but due to dress With deviation wheel can be caused to occur certain deviation to actual non-equilibrium site phase, this deviation needs to control in certain scope, It is to the specific requirement taken turns to actual non-equilibrium site phase at present:Between two wheels, between two brake discs, with end wheel with system Non-equilibrium site phase is 180 ° ± 5 ° between Moving plate.
However, in the prior art, the non-equilibrium site phase taken turns pair generally leans on field worker naked-eye observation, it is clear that this can go out Now very big deviation, the above-mentioned specific requirement to taking turns to non-equilibrium site phase can not be met.Further, since wheel is to assembling process It is higher to the portability requirements of instrument, and the limitation to this body structure is taken turns, also to taking turns to non-equilibrium site phase detection device Exploitation be provided with higher requirement.
In view of this, a kind of device of detection wheel to non-equilibrium site phase how is developed, it is higher accurate to make it have Degree is taken turns to assembling quality with improving, and easy to operate, can be realized portable operation, is that those skilled in the art are urgently to be resolved hurrily Technical problem.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of wheel to non-equilibrium site phase detection device, it is described Taking turns includes the beam emissions portion and beam reception portion of at least one pair of mutual cooperation to non-equilibrium site phase detection device;The light Beam emission part and the beam reception portion include pointer, and the pointer can be directed at the uneven position of wheel to be measured or brake disc Put;
The beam emissions portion also includes light-beam transmitter, and the beam reception portion also includes the display with angle index Screen, the light beam that the light-beam transmitter is sent is parallel to axletree and vertically invests the display screen;
The pointer in the beam emissions portion is connected by the first link with the light-beam transmitter, the beam reception portion Pointer be connected by the second link with the display screen.
The utility model offer one kind is taken turns can detecting two wheels to non-equilibrium site phase detection device, two brake discs Between and the non-equilibrium site phase between wheel and brake disc of the axletree with one end, and there is the higher degree of accuracy, Ke Yiyou Effect improves the assembling quality of wheel pair, so as to improve the security of rail vehicle operation.
Alternatively, first link is connected with second link with axletree;First link and institute Fix bar and locating piece that the second link includes interfixing are stated, fix bar and the light beam of first link are sent out Emitter is connected, and the fix bar of second link is connected with the display screen;
Two locating pieces offer the neck for coordinating with axletree, and when it is connected in axletree, neck center line Intersected vertically with axle axis;Two fix bars neck center line corresponding to is set, and second link The axis of fix bar overlaps with an angle index line of the corresponding display screen.
Alternatively, first link also includes the corresponding pointer of connection and the positioning with second link At least one of the head rod of block and the second connecting rod, the head rod and described second connecting rod is can avoid The bending structure of axletree, so that the corresponding pointer can be directed at the non-equilibrium site of wheel to be measured or brake disc.
Alternatively, the head rod and second connecting rod are multistage bar structure, and the two includes being connected to The active segment of the canned paragraph of the corresponding locating piece and the fixed corresponding pointer, the canned paragraph are offered along described in correspondence The chute of neck center line extension, the active segment can be along the slide.
Alternatively, the neck center line in the beam emissions portion or beam reception portion extends vertically, two necks Open Side Down is stuck on axletree.
Alternatively, two necks are along the symmetrical reverse V-shaped groove of neck center line.
Alternatively, the zero graduation line of the display screen overlaps with the corresponding neck center line, and the angle of the display screen It is -5 ° to+5 ° to spend meter full scale.
Alternatively, the wheel includes the beam emissions portion of two pairs of mutual cooperations to non-equilibrium site phase detection device With the beam reception portion, wherein, a pair are corresponding with two brake discs, and another pair is corresponding with two wheels, positioned at axletree with one end Brake disc and wheel corresponding a pair of the beam emissions portion and the beam reception portion of another pair, and corresponding brake disc respectively The corresponding fix bar rotation connection of the light-beam transmitter, so as to can be with corresponding same one end wheel after rotating The display screen coordinates, and detects the phase of non-equilibrium site between the end wheel and brake disc.
Brief description of the drawings
Fig. 1 is structural representation of the wheel provided by the utility model to the beam emissions portion of non-equilibrium site phase detection device Figure;
Fig. 2 is structural representation of the wheel provided by the utility model to the beam reception portion of non-equilibrium site phase detection device Figure;
Fig. 3 has the wheel in the two pairs of beam emissions being mutually matched portions and beam reception portion to not to be provided by the utility model The application schematic diagram of equilbrium position phase detection device;
Reference is as follows in Fig. 1-3:1 beam emissions portion, 11 first pointers, 12 light-beam transmitters, 13 first links, 131 first fix bars, 132 first locating pieces, 133 head rods, 2 beam reception portions, 21 second pointers, 22 display screens, 23 Second link, 231 second fix bars, 232 second locating pieces, 233 second connecting rods, A neck center lines, S axletrees, M wheels, N brake discs.
Embodiment
In order that those skilled in the art more fully understands the technical solution of the utility model, below in conjunction with the accompanying drawings and have The utility model is described in further detail for body embodiment.
Fig. 1-Fig. 3 is refer to, Fig. 1 is that wheel provided by the utility model is sent out the light beam of non-equilibrium site phase detection device Penetrate the structural representation in portion 1;Fig. 2 is beam reception portion of the wheel provided by the utility model to non-equilibrium site phase detection device 2 structural representation;Fig. 3 is the beam emissions portion 1 and beam reception portion 2 with two pairs of mutual cooperations provided by the utility model Wheel to the application schematic diagram of non-equilibrium site phase detection device.
Wheel provided by the utility model includes the light of at least one pair of mutual cooperation to non-equilibrium site phase detection device Beam emission part 1 and beam reception portion 2, for convenience of description, following beam emissions portions 1 and beam reception portion with a pair of mutual cooperations 2 detection wheels between two brake discs exemplified by non-equilibrium site phase to being specifically described.
The beam emissions portions 1 of a pair of mutual cooperations include the first pointer 11, and beam reception portion 2 includes the second pointer 21, and two The pointer of person is respectively aligned to the non-equilibrium site of one of them brake disc to be measured.As shown in Figure 1-2, pointer can be with tip Triangular plate, during detection, pointer tip contradicts the pointer axis for corresponding brake disc non-equilibrium site to be measured, crossing pointer tip It can be radially arranged along brake disc, so that pointer can intuitively indicate the angle of corresponding brake disc non-equilibrium site.
Beam emissions portion 1 also includes light-beam transmitter 12, and light-beam transmitter 12 can be laser pen;Beam reception portion 2 is also Including the display screen 22 with angle index, display screen 22 can include the housing with visual windows and the angle being placed in housing Spend dial;The light beam (as shown by dotted lines in figure 3) that laser pen is sent can pass through visual windows vertically to the quarter of angle dial Degree face projects, and launching position of the light beam on angle index dial scale face can be observed by visual windows, so as to react light Relative position between beam transmitter 12 and display screen 22.
Meanwhile light-beam transmitter 12 is connected by the first link 13 with the first pointer 11, display screen 22 connects by second Connect frame 23 to be connected with the second pointer 21, now, by setting the first link 13 and the second link 23 so that the first pointer 11 And the second phase between pointer 21 can be represented by the phase between light-beam transmitter 12 and display screen 22, i.e., can lead to The angle index crossed on observation display screen 22 obtains.
When needing detection, beam emissions portion 1 and beam reception portion 2 can be connected by the first link 13 and second respectively Connect frame 23 to be connected with axletree, the emission port of the scale face of display screen 22 perpendicular to axle axis towards light-beam transmitter 12, light beam The light beam that transmitter 12 is launched vertically invests display screen 22 parallel to axletree, with the uneven position of two brake discs of relatively accurate detection Phase is put, and then wheel can be adjusted in time according to testing result to assembling, wheel is improved to assembling quality, so as to improve rail vehicle The security of operation.
It should be noted that as long as the light beam that above-mentioned light-beam transmitter 12 is launched ensures to cross its injustice in corresponding brake disc Weigh in the axial cross section of position, projected with regard to that can play on display screen 22 to indicate the function of non-equilibrium site phase, but light Beam is more convenient for setting parallel to axletree, is preferred embodiment.Meanwhile above-mentioned two link can not be also connected with axletree, as long as Static both when ensureing to observe, still, the two is connected to axletree and is equally easy to set, and is preferred embodiment.
Specifically, as shown in Figure 1-2, above-mentioned first link 13 can include the first locating piece 132 and the first fix bar 131, the one end of the first fix bar 131 is fixedly connected on the first locating piece 132, and the other end is connected with light-beam transmitter 12;Above-mentioned Two links 23 can include the second locating piece 232 and the second fix bar 231, and the one end of the second fix bar 231 is fixedly connected on Two locating pieces 232, the other end are connected with display screen 22.
Meanwhile two locating piece can offer with axletree outer wall coordinate neck so that beam emissions portion 1 and light beam Acceptance division 2 is clamped on axletree by the first locating piece 132 and the second locating piece 232 respectively.By the way of neck clamping, both It can ensure that beam emissions portion 1 and beam reception portion 2 can quickly be fixed with respect to axletree, can be facilitated again and examined in detection Fast quick-detach beam emissions portion 1 and beam reception portion 2 after the completion of survey.
In addition, after locating piece clamping axletree, following conditions need to be met:The neck center line A of two necks is and axle axis Intersect vertically, and neck center line A of first fix bar 131 along the first locating piece 132 is set, the second fix bar 231 along second The neck center line A of locating piece 232 is set, and under this setup, a graduation mark of display screen 22 can be fixed with second The axis of bar 231 overlaps, so that the graduation mark as reference graduation line, under this embodiment, is being shown by reading light beam The angle of launching position relative datum graduation mark on screen 22, you can measure the non-equilibrium site phase between two brake discs.
Further, in two necks of the above-mentioned locating piece 232 of first locating piece 132 and second, in the neck of one of them Heart line A can be with vertically extending (above-below direction as shown in Figure 3), and Open Side Down is stuck on axletree for the neck, now, another Neck also close to being stuck on axletree downwards.As stated in the Background Art, the phase of the theoretical non-equilibrium site between two brake discs For 180 °, now, two neck center line A extend vertically, when the phase of two brake disc non-equilibrium sites is 180 ° of ± α, two In neck center line A, one extends vertically, and another one is at an angle with it.It should be appreciated that under the influence of locating piece deadweight, downwards The mode of clamping make it that the connection between locating piece and axletree is more firm, can further improve wheel to non-equilibrium site phase The accuracy in detection of detection means.
In addition, in order to further improve detection efficiency, and the complexity of detection means is reduced, it is specified that two brakings during test The non-equilibrium site of disk is located on corresponding neck center line A, can be realized by rolling brake disk, as shown in figure 3, when card When groove center line A is vertically extending, indicate that the pointer of the brake disc non-equilibrium site is also vertically set.
Specifically, the above-mentioned graduation mark overlapped with neck center line A can be the zero graduation line of display screen 22, now, show The meter full scale of display screen 22 may be configured as allow two brake discs between non-equilibrium site phase deviation limit value, i.e., -5 ° arrive+ 5°.Under this embodiment, between two brake discs of detection during non-equilibrium site phase, as long as the light beam that light-beam transmitter 12 is sent Project non-equilibrium site phase between just representing two brake discs on display screen 22 to meet the requirements, reading angular when reducing detection The step of, so as to improve detection efficiency.
More specifically, as shown in Figure 1-2, above-mentioned neck can be arranged on locating piece bottom symmetrical along its center line Reverse V-shaped groove, during detection, can press locating piece radially downward along axletree makes reverse V-shaped groove be interference fitted with axletree.Certainly, neck Can also be other patterns, such as circular groove or square groove, still, by comparison for, reverse V-shaped groove is realizing locating piece with respect to axletree Clamping during, neck center line A can be kept to be intersected vertically with axle axis, centering axle axis of being more convenient for, is preferred Embodiment.
Further, as shown in Figure 1-2, the first link 13 also includes head rod 133, and the second link 23 also wraps Include the second connecting rod 233.First pointer 11 is connected to the first locating piece 132 by head rod 133, and the second connecting rod 233 will Second pointer 21 is connected to the second locating piece 232.As stated in the Background Art, theoretical non-equilibrium site phase is between two brake discs 180 °, i.e., the non-equilibrium site of two brake discs is respectively distributed to axletree both sides.Based on this, above-mentioned head rod 133 and At least one is the bending structure that can avoid axletree to two connecting rods 233, so that two pointers can be directed at two brake discs and be located at The non-equilibrium site of axletree not homonymy.
Specifically, as shown in Figure 1-2, the above-mentioned connecting rod 233 of head rod 133 and second can be multistage bar knot Structure, and head rod 133 includes fixing the first active segment of the first pointer 11 and being connected to the first of the first locating piece 132 consolidating Determine section, the second connecting rod 233 includes fixing the second active segment of the second pointer 21 and being connected to the second of the second locating piece 232 consolidating Determine section.
Wherein, the first canned paragraph and the second canned paragraph are equipped with the chute along corresponding neck center line A extensions, the first activity Section can be along the slide of the second canned paragraph, so that the detection along the slide of the first canned paragraph, the second active segment Device can be used in testing the different each brake disc of non-equilibrium site.Now, as shown in figure 1, the connecting rod of axletree can be avoided Corresponding locating piece bottom is connected to its canned paragraph, and the axis of the canned paragraph is parallel with the neck center line A of the locating piece, it is right The active segment answered can be relatively fixed section and be bent to axle axis direction, so as to avoid axletree.
When above-mentioned wheel is used to detect the wheel pair after being pressed to non-equilibrium site phase detection device, specific detection process is: The non-equilibrium site of brake disc is adjusted by rotating axletree first, makes the non-equilibrium site of one of brake disc positioned at vertical flat On the straight line intersected in face with axle axis, now, the non-equilibrium site of two brake discs is respectively positioned at both sides above and below axletree;So Beam emissions portion 1 is stuck in axletree both ends by corresponding locating piece with beam reception portion 2 afterwards, and makes beam emissions portion 1 and light The pointer of beam acceptance division 2 is respectively aligned to the non-equilibrium site of a brake disc;After alignment, light-beam transmitter 12 hangs down to display screen 22 Irradiating light beam is delivered directly, the non-equilibrium site between two brake discs is represented if light-beam transmitter 12 can be projected on display screen 22 Phase meets the requirements, otherwise, undesirable, need to further adjust the assembling of two brake discs.
Similarly, detect two wheels between non-equilibrium site phase when, can make a pair of mutual cooperations beam emissions portion 1 and Beam reception portion 2 corresponds to two wheels respectively;When detection is located at the non-equilibrium site phase between the wheel at same end and brake disc, Beam emissions portion 1 and 2 one, beam reception portion correspondence wheel to be measured, a correspondence braking to be measured for a pair of mutual cooperations can be made Disk;Specific detection process is consistent with above-mentioned detection process, will not be repeated here.
In addition, as shown in figure 3, wheel provided by the utility model can also include to non-equilibrium site phase detection device The beam emissions portion 1 and beam reception portion 2 of two pairs of mutual cooperations, corresponding two brake discs of one pair of which, corresponding two wheels of another pair. Specifically it is arranged as:A beam reception portion 2 and a beam emissions are corresponded to respectively with the wheel and brake disc of one end positioned at axletree Portion 1, the light-beam transmitter 12 in the beam emissions portion 1 of corresponding brake disc are rotatablely connected with corresponding fix bar.
It is appreciated that because the detection means in the present embodiment includes two pairs of beam emissions portions 1 to cooperate and light beam Acceptance division 2, therefore, when each part is connected in axletree by above-mentioned arrangement, imbalance between two wheels can be realized simultaneously The detection of non-equilibrium site phase between the detection of position phase, two brake discs, and provided with rotatable one end of light-beam transmitter 12 Wheel and brake disc between non-equilibrium site phase detection, without assembling and disassembling each part.Specific detection process as above institute State.
When uneven position between wheel of the detection means detection provided with rotatable one end of light-beam transmitter 12 and brake disc When putting phase, bar rotary beam transmitter 12 can be relatively fixed, can be to wheel (left side car shown in Fig. 3 should be held Take turns M) beam reception portion 2 the perpendicular projection light beam of display screen 22, this embodiment can further save detection time, carry High detection efficiency.When the non-equilibrium site phase between the wheel and brake disc for detecting the other end, it is necessary to by detection means Pull down, and be reset on the wheel and brake disc of the other end from axletree.
In addition, above-mentioned two beam emissions portion 1, the light beam that the light-beam transmitter 12 of one of them is launched can be feux rouges, The light beam that another light-beam transmitter 12 is launched can be blue light, be easy to observe so as to be mutually distinguishable two light beams.
Wheel provided by the utility model has higher accuracy in detection and higher to non-equilibrium site phase detection device Detection efficiency, and overall structure is simply light, meets the portability requirements of rail vehicle assembling work.
Non-equilibrium site phase detection device is described in detail wheel provided by the utility model above.Herein In apply specific case principle of the present utility model and embodiment be set forth, the explanation that the above is implemented is only intended to Help understands method and its core concept of the present utility model.It should be pointed out that come for those skilled in the art Say, on the premise of the utility model principle is not departed from, some improvement and modification can also be carried out to the utility model, these change Enter and modify to also fall into the protection domain of the utility model claims.

Claims (8)

1. one kind wheel to non-equilibrium site phase detection device, take turns to including axletree and be respectively sleeved in axletree both ends wheel and its Brake disc, the wheel is to non-equilibrium site phase detection device between two wheels of detection, between two brake discs and positioned at car Axle is the same as the non-equilibrium site phase between the wheel and brake disc of one end, it is characterised in that the wheel is to non-equilibrium site phase Detection means includes the beam emissions portion (1) and beam reception portion (2) of at least one pair of mutual cooperation;The beam emissions portion (1) Include pointer with the beam reception portion (2), the pointer can be directed at the non-equilibrium site of wheel to be measured or brake disc;
The beam emissions portion (1) also includes light-beam transmitter (12), and the beam reception portion (2) also includes carrying angle index Display screen (22), the light beam that the light-beam transmitter (12) sends is parallel to axletree and vertically invests the display screen (22);
The pointer of the beam emissions portion (1) is connected by the first link (13) with the light-beam transmitter (12), the light The pointer of beam acceptance division (2) is connected by the second link (23) with the display screen (22).
2. wheel according to claim 1 is to non-equilibrium site phase detection device, it is characterised in that first link (13) it is connected with second link (23) with axletree;First link (13) is equal with second link (23) Including the fix bar to interfix and locating piece, fix bar and the light-beam transmitter (12) of first link (13) connect Connect, the fix bar of second link (23) is connected with the display screen (22);
Two locating pieces offer the neck for coordinating with axletree, and when it is connected in axletree, neck center line (A) with Axle axis intersects vertically;Two fix bars neck center line (A) corresponding to is set, and second link (23) axis of fix bar overlaps with an angle index line of the corresponding display screen (22).
3. wheel according to claim 2 is to non-equilibrium site phase detection device, it is characterised in that first link (13) also include with second link (23) the corresponding pointer of connection and the locating piece head rod (133) and At least one of second connecting rod (233), the head rod (133) and described second connecting rod (233) is can avoid The bending structure of axletree, so that the corresponding pointer can be directed at the non-equilibrium site of wheel to be measured or brake disc.
4. wheel according to claim 3 is to non-equilibrium site phase detection device, it is characterised in that the head rod (133) it is multistage bar structure with second connecting rod (233), the two includes the fixation for being connected to the corresponding locating piece The active segment of section and the fixed corresponding pointer, the canned paragraph are offered along corresponding neck center line (A) extension Chute, the active segment can be along the slides.
5. the wheel according to any one of claim 2-4 is to non-equilibrium site phase detection device, it is characterised in that described The neck center line (A) of beam emissions portion (1) or beam reception portion (2) vertically extend, two necks Open Side Down card In on axletree.
6. wheel according to claim 5 is to non-equilibrium site phase detection device, it is characterised in that two necks are edge The symmetrical reverse V-shaped groove of neck center line (A).
7. the wheel according to any one of claim 2-4 is to non-equilibrium site phase detection device, it is characterised in that described The zero graduation line of display screen (22) overlaps with the corresponding neck center line (A), and the angle index model of the display screen (22) Enclose for -5 ° to+5 °.
8. the wheel according to any one of claim 2-4 is to non-equilibrium site phase detection device, it is characterised in that described Take turns includes two pairs of beam emissions portions (1) to cooperate and the beam reception portion to non-equilibrium site phase detection device (2), wherein, a pair corresponding with two brake discs, and another pair is corresponding with two wheels, brake disc and wheel point positioned at axletree with one end The beam emissions portion (1) that Dui Ying be a pair and the beam reception portion (2) of another pair, and the light of corresponding brake disc The corresponding fix bar rotation connection of beam transmitter (12), so as to after rotating can with described in corresponding same one end wheel Display screen (22) coordinates, and detects the phase of non-equilibrium site between the end wheel and brake disc.
CN201720536311.9U 2017-05-12 2017-05-12 One kind wheel is to non-equilibrium site phase detection device Active CN206787765U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201720536311.9U CN206787765U (en) 2017-05-12 2017-05-12 One kind wheel is to non-equilibrium site phase detection device

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Application Number Priority Date Filing Date Title
CN201720536311.9U CN206787765U (en) 2017-05-12 2017-05-12 One kind wheel is to non-equilibrium site phase detection device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109141750A (en) * 2018-10-19 2019-01-04 天津电力机车有限公司 It is a kind of to take turns to uneven alignment device
CN110567735A (en) * 2019-09-21 2019-12-13 吴明 Method for detecting maximum process difference of braking force of automobile test wheel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109141750A (en) * 2018-10-19 2019-01-04 天津电力机车有限公司 It is a kind of to take turns to uneven alignment device
CN109141750B (en) * 2018-10-19 2024-03-01 天津电力机车有限公司 Wheel set unbalance alignment device
CN110567735A (en) * 2019-09-21 2019-12-13 吴明 Method for detecting maximum process difference of braking force of automobile test wheel

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