CN208333871U - Transmission shaft protection device and threst stand - Google Patents
Transmission shaft protection device and threst stand Download PDFInfo
- Publication number
- CN208333871U CN208333871U CN201821117329.6U CN201821117329U CN208333871U CN 208333871 U CN208333871 U CN 208333871U CN 201821117329 U CN201821117329 U CN 201821117329U CN 208333871 U CN208333871 U CN 208333871U
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- China
- Prior art keywords
- transmission shaft
- protection device
- protective cover
- limited block
- shaft protection
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Abstract
The utility model belongs to threst stand technical field, is related to a kind of transmission shaft protection device and threst stand.The transmission shaft protection device includes bracket, protective cover, limited block and displacement sensor; the protective cover is fixedly connected on one end of the bracket; the limited block is fixedly connected in the protective cover; the center of the limited block is equipped with the mounting hole for installing transmission shaft; institute's displacement sensors are mounted on the limited block or protective cover, and institute's displacement sensors are used to sense the radial displacement of transmission shaft.The transmission shaft protection device can carry out real-time monitoring to transmission shaft, with the centering situation of real-time dynamic monitoring engine during the test and dynamometer machine.
Description
Technical field
The utility model belongs to threst stand technical field, more particularly to a kind of transmission shaft protection device and hair
Motivation test-bed.
Background technique
Transmission shaft in threst stand for connecting tested engine and dynamometer machine, because its work luck is walked around speed
Height, engine luggine is big, and the torque of receiving is big, once transmission shaft is because the exceptions such as be broken or bolt loosens occurs in above-mentioned reason, and it is right
Equipment, personnel will cause biggish security threat, therefore ordinary circumstance lower drive shaft surface can cover one by general steel plate system
At protective cover.
The structure and function of existing protective cover is simple, and can not carry out detection to displacement in drive shafts fracture supervises rack
Whether control system makes timely reaction, and can not detect bolt or nut on the middle transmission shaft that runs at high speed and be broken and fly out, and often exists
Drive shafts fracture simultaneously strikes the generation that accident could be judged after the limited block in protective cover.It is related in case of emergency
The protection acts such as emergency stop are all made by rack operator, therefore certainly exist certain reaction time, and often at this section
Between in section, due to the particularity of engine driveshaft, revolving speed often can achieve 6000-8000r/min, and hold again after hitting
Row shutdown action will lead to irreversible damage serious to dynamometer machine and engine crankshaft end, cause great personnel, equipment damage
Hurt the generation of accident.
In addition, preparation (such as engine and dynamometer machine pair of the existing protective cover without lifting device, before doing engine test
Middle link) when, protective cover can interfere with centering instrument, need to protective cover be dismantled and be moved away from, and it is time-consuming and laborious, it is serious to restrict work effect
The promotion of rate.And existing threst stand can not check whether occur between engine and dynamometer machine during the test
The radial beat eccentricity of relative displacement and transmission shaft during running at high speed such as checks centering during the test, then needs to stop
Only test is checked, the used time about 3 hours, seriously affects test progress.
Utility model content
The technical problem to be solved by the utility model is to can not be in test process for existing threst stand
The technical issues of whether relative displacement occurring between middle inspection engine and dynamometer machine provides a kind of transmission shaft protection device and hair
Motivation test-bed.
In order to solve the above technical problems, on the one hand, the utility model embodiment provides a kind of transmission shaft protection device, wrap
Bracket, protective cover, limited block and displacement sensor (not shown) are included, the protective cover is fixedly connected on the one of the bracket
End, the limited block are fixedly connected in the protective cover, and the center of the limited block is equipped with the installation for installing transmission shaft
Hole, institute's displacement sensors are mounted on the limited block or protective cover, and institute's displacement sensors are used to sense the diameter of transmission shaft
To displacement.
According to the transmission shaft protection device of the utility model embodiment, displacement sensor is mounted on limited block or protective cover
On, real-time monitoring is carried out to transmission shaft by displacement sensor, with real-time dynamic monitoring engine and measurement of power during the test
The centering situation of machine.When the relative position between engine and dynamometer machine because the reasons such as vibration, torsion and high revolving speed occur relatively
When displacement, circular runout displacement occurs for transmission shaft, and the displacement information of transmission shaft is fed back to block testing stand by displacement sensor
The monitoring system of frame, monitoring system can make in time anticipation at the first time, and carry out to transmission shaft, engine and dynamometer machine tight
Anxious shutdown action is reinforced to avoid occurring the serious operating irregularity reserved more sufficient time to personnel, engine, dynamometer machine
And the protection of auxiliary device, middle stopping test checking that centering can save the used time about 3 hours compared with the existing technology.
Optionally, the limited block is equipped with through-hole, and the interior end opening of the through-hole is towards transmission shaft, the displacement sensing
Device is mounted in the through-hole.
Optionally, the limited block is equipped with multiple through-holes, and the transmission shaft protection device includes grafting correspondingly
Multiple institute's displacement sensors in multiple through-holes.
Optionally, the transmission shaft protection device further includes vibrating sensor, and the vibrating sensor is fixedly connected on institute
It states on protective cover.
Optionally, the outer wall of the protective cover is equipped with tooling plane, and the vibrating sensor is fixedly connected on the tooling
In plane.
Optionally, the bracket includes pedestal, screw rod and elevator, and the pedestal is equipped with threaded hole, the screw rod
It is threaded in the threaded hole, the elevator is fixed on the upper end of the screw rod, and the protective cover is fixed on the liter
It drops on block.
Optionally, the protective cover includes the first protective shell and the second protective shell, and first protective shell is fixedly connected on
One end of the bracket, one end of first protective shell and one end of second protective shell are hinged, first protective shell
The other end of the other end and second protective shell be detachably connected.
Optionally, the limited block includes the first limit body and the second limit body, and first limit body is fixedly connected on
In first protective shell, second limit body is fixedly connected in second protective shell.
Optionally, the side of first limit body towards second limit body, which is recessed inwardly, to form the first mounting groove,
The side of second limit body towards first limit body position corresponding with first mounting groove is recessed inwardly to be formed
Second mounting groove, first mounting groove form the mounting hole when docking with the second mounting groove.
On the other hand, the utility model embodiment additionally provides a kind of threst stand comprising above-mentioned transmission
Axis protective device.
Detailed description of the invention
Fig. 1 is the schematic diagram for the transmission shaft protection device that an embodiment of the present invention provides；
Fig. 2 is the sectional view of the limited block for the transmission shaft protection device that an embodiment of the present invention provides.
Appended drawing reference in specification is as follows:
1, bracket；101, pedestal；102, screw rod；103, elevator；
2, protective cover；201, the first protective shell；2011, tooling plane；202, the second protective shell；
3, limited block；301, through-hole；302, the first limit body；3021, the first mounting groove；303, the second limit body；3031,
Second mounting groove；304, threaded hole；
4, transmission shaft.
Specific embodiment
The technical issues of in order to keep the utility model solved, technical solution and beneficial effect are more clearly understood, below
In conjunction with accompanying drawings and embodiments, the utility model is described in further detail.It should be appreciated that specific reality described herein
It applies example to be only used to explain the utility model, is not used to limit the utility model.
As depicted in figs. 1 and 2, transmission shaft protection device provided by the embodiment of the utility model, including bracket 1, protective cover
2, limited block 3 and displacement sensor (not shown), the protective cover 2 are fixedly connected on one end of the bracket 1, the limit
Block 3 is fixedly connected in the protective cover 2, and the center of the limited block 3 is equipped with the mounting hole for installing transmission shaft 4, described
Displacement sensor is mounted on the limited block 3 or protective cover 2, and institute's displacement sensors are used to sense the radial position of transmission shaft 4
It moves.
According to the transmission shaft protection device of the utility model embodiment, displacement sensor is mounted on limited block 3 or protective cover 2
On, real-time monitoring is carried out to transmission shaft 4 by displacement sensor, with real-time dynamic monitoring engine and measurement of power during the test
The centering situation of machine.When the relative position between engine and dynamometer machine because the reasons such as vibration, torsion and high revolving speed occur relatively
When displacement, circular runout displacement occurs for transmission shaft 4, and the displacement information of transmission shaft 4 is fed back to engine test by displacement sensor
The monitoring system of rack, monitoring system can make in time anticipation at the first time, and to transmission shaft 4, engine and dynamometer machine into
Row emergency shutdown action is reinforced to avoid occurring the serious operating irregularity reserved more sufficient time to personnel, engine, survey
The protection of function machine and auxiliary device, middle stopping test checking that centering can save the used time about 3 hours compared with the existing technology.
Preferably, the limited block 3 is mounted in protective cover 2 using bolt, can be according to different types of transmission shaft
Adjust the installation site of the limited block 3.
Infrared displacement sensor can be selected in institute's displacement sensors, and also optional precision is higher, reaction is more sensitive swashs
Optical displacement sensor etc..
When selecting infrared displacement sensor, by the infrared optical registration transmission shaft 4 of infrared displacement sensor sending.Due to surveying
Function machine is usually fixed point, and relative displacement occurs is usually engine, and when relative displacement occurs in engine, transmission shaft 4 is inevitable
There is a degree of offset, infrared displacement sensor is to sense by infrared measuring point on detection transmission shaft 4 to infrared displacement
Whether the range estimation transmission shaft 4 of device generates relative displacement.
Due to using infrared displacement optical sensor, dynamically 4 rotation status of transmission shaft is carried out in real time using optical signal
Monitoring can be realized the untouchable detection for the circular runout value being displaced within 0.1mm, to high-speed rotating transmission shaft 4
Shutdown action can more be performed quickly when being detected, for avoid occurring serious operating irregularity it is reserved more sufficient when
Between.
The existing product that market is easy to buy can be used in infrared displacement sensor or laser displacement sensor etc..
In one embodiment, as shown in Fig. 2, the limited block 3 is equipped with through-hole 301, the interior end opening of the through-hole 301
Towards transmission shaft 4, institute's displacement sensors are mounted in the through-hole 301.
The limited block 3 provides pedestal for the installation of displacement sensor, and the through-hole 301 on the limited block 3 can make described
Displacement sensor directly detects transmission shaft 4, improves detection accuracy.
When institute's displacement sensors are infrared displacement optical sensor, infrared displacement sensor is mounted on the through-hole
In 301, the infrared light that infrared displacement sensor can be made to issue directly is directed at transmission shaft 4, to detect to transmission shaft 4.
The limited block 3 selects high-intensitive, tear-proof and wear-resisting polyurethane material is made, and sends out in one end of transmission shaft 4
When raw fracture, limited block 3 made of polyurethane material can control the transmission shaft 4 to shake range, avoid to equipment and engine
Cause secondary injury.
In addition, the limited block 3 of polyurethane material can also minimize the operating range after 4 broken ends of fractured bone of transmission shaft, reinforcement pair
The protection of personnel, engine, dynamometer machine and auxiliary device.
In one embodiment, the limited block 3 is equipped with multiple through-holes 301, and the transmission shaft protection device includes one by one
The multiple institute's displacement sensors being accordingly plugged in multiple through-holes 301.
Specifically, as shown in Fig. 2, the transmission shaft protection device includes three infrared displacement sensors, three infrared positions
Displacement sensor is circumferentially installed in protective cover 2 with 120 ° for interval respectively, is equally fixed using nut bolt.
As shown in Fig. 2, being additionally provided with four threaded holes 304 on the limited block 3, the screw thread is corresponded on the protective cover 2
The position in hole 304 is equipped with fixation hole, when the limited block 3 to be fixed on protective cover 2, only bolt need to be passed through the fixation
Hole is threaded in the threaded hole 304, and the fixation of the limited block 3 can be completed.
In one embodiment, the transmission shaft protection device further includes vibrating sensor, and the vibrating sensor is fixed to be connected
It connects on the protective cover 2.Real-time monitoring is carried out to transmission shaft 4 by setting vibrating sensor.
It is high when due to falling off between engine and dynamometer machine because of the generation off-axis such as vibration, torsion and high revolving speed or axle bolt
Certainty impact protector cover 2 generates vibration when the bolt or nut of speed operating axis damping block fly out, and vibrating sensor can be examined in time
Vibration is measured so that monitoring system is reacted, monitoring system is making anticipation in time at the first time, and to axis, engine, survey
Function machine carries out emergency shutdown action, and reducing leads to the risk of off-axis because bolt or nut fall off.
The existing product that market is easy to buy can be used in vibrating sensor.
In one embodiment, as shown in Figure 1, the outer wall of the protective cover 2 is equipped with tooling plane 2011, the vibrating sensing
Device is fixedly connected in the tooling plane 2011, with detection due to because of vibration, torsion and high turning between engine and dynamometer machine
When speed etc. occurs off-axis or axle bolt and falls off, runs at high speed the bolt of axis damping block or impact protector cover 2 produces when nut flies out
Raw vibration.
Vibrating sensor is installed in the tooling plane 2011, using bolt fastening.
In one embodiment, described as shown in Figure 1, the bracket 1 includes pedestal 101, screw rod 102 and elevator 103
Pedestal 101 is equipped with threaded hole, and the screw rod 102 is threaded in the threaded hole, and the elevator 103 is fixed on described
The upper end of screw rod 102, the protective cover 2 is fixed on the elevator 103, so that the bracket 1 can have elevating function.
Since the bracket 1 has elevating function, can accurate control protective cover 2 spatial position, simplify during rack builds
Unnecessary operation reduces the used time, improves working efficiency.
It is identified with specific scale on the elevator 103, protective cover 2 can be adjusted according to institute's displacement sensors feedback data
Whole spatial position guarantees that transmission shaft 4 is in 3 symmetrical centre line position of limited block, greatly improves rack and prepares efficiency and dress
Protective cover 2 is moved without disassembly with precision, and in development engine upper stage, improves working efficiency.
In one embodiment, as shown in Figure 1, the protective cover 2 includes the first protective shell 201 and the second protective shell 202, institute
One end that the first protective shell 201 is fixedly connected on the bracket 1 is stated, one end of first protective shell 201 and described second protect
One end of protective case 202 is hinged, and the other end of first protective shell 201 and the other end of second protective shell 202 are detachable
Connection, the limited block 3 is clamped in first protective shell 201 and the second protective shell 202, while making transmission shaft 4 more
Add and is firmly installed in the mounting hole of the limited block 3.
In one embodiment, as shown in Figure 1, the limited block 3 includes the first limit body 302 and the second limit body 303, institute
It states the first limit body 302 to be fixedly connected in first protective shell 201, second limit body 303 is fixedly connected on described
In second protective shell 202.
The side of first limit body 302 towards second limit body 303, which is recessed inwardly, to form the first mounting groove
3021, the side for stating the second limit body 303 towards first limit body 302 position corresponding with first mounting groove 3021
It is recessed inwardly to form the second mounting groove 3031, the other end of first protective shell 201 is another with second protective shell 202
When the connection of end, first mounting groove 3021 docks to form the mounting hole with the second mounting groove 3031.
When the other end of first protective shell 201 and the other end of second protective shell 202 link together it is (described
First protective shell 201 and the second protective shell 202 are closed) when, first limit body 302 and the second limit body 303 can be docked,
Realize the closure of first limit body 302 and the second limit body 303.Due to first mounting groove 3021 and the second mounting groove
3031 position is corresponding, when first limit body 302 and the second limit body 303 are closed, can be locked in transmission shaft 4 one small
In the circumference (and docked by first mounting groove 3021 with the second mounting groove 3031 formed be mounting hole) of range.
The displacement sensor of transmission shaft protection device provided by the utility model and the working principle of vibrating sensor are as follows:
Institute's displacement sensors are illustrated by taking infrared displacement sensor as an example.Infrared displacement sensor is tried using engine
It tests the existing 5V power supply of rack (can also be external) and one root signal wire and monitoring system sensor acquisition module carries out testing number
According to transmission.Relative displacement situation during real-time monitoring dynamometer machine and engine test, and off-axis occurs in the transmission shaft 4
When detect the displacement of transmission shaft 4 in time and displacement signal be transmitted to monitoring system, made a response movement by monitoring system.
The vibrating sensor is acquired using the existing 5V power supply of rack (can also be external) by number output port and rack
Module, which is connected, realizes the transmission of vibration parameters.It flies out in engine positioning fastening bolt fracture and hits protective cover 2 or other originals
When vibrating increasing because caused by, vibrating sensor is detected to vibrate and transmit a signal to monitoring system in time and be done by monitoring system
Reaction acts out.
Threst stand provided by the embodiment of the utility model comprising above-mentioned transmission shaft protection device.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (10)
1. a kind of transmission shaft protection device, which is characterized in that described including bracket, protective cover, limited block and displacement sensor
Protective cover is fixedly connected on one end of the bracket, and the limited block is fixedly connected in the protective cover, the limited block
Center is equipped with the mounting hole for installing transmission shaft, and institute's displacement sensors are mounted on the limited block or protective cover, described
Displacement sensor is used to sense the radial displacement of transmission shaft.
2. transmission shaft protection device according to claim 1, which is characterized in that the limited block is equipped with through-hole, described
The interior end opening of through-hole is mounted in the through-hole towards transmission shaft, institute's displacement sensors.
3. transmission shaft protection device according to claim 1, which is characterized in that the limited block is equipped with multiple through-holes,
The transmission shaft protection device includes the multiple institute's displacement sensors being plugged in multiple through-holes correspondingly.
4. transmission shaft protection device according to claim 1, which is characterized in that the transmission shaft protection device further includes vibration
Dynamic sensor, the vibrating sensor are fixedly connected on the protective cover.
5. transmission shaft protection device according to claim 4, which is characterized in that the outer wall of the protective cover is flat equipped with tooling
Face, the vibrating sensor are fixedly connected in the tooling plane.
6. transmission shaft protection device according to claim 1 or 2, which is characterized in that the bracket include pedestal, screw rod with
And elevator, the pedestal are equipped with threaded hole, the screw flight is connected in the threaded hole, and the elevator is fixed on
The upper end of the screw rod, the protective cover are fixed on the elevator.
7. transmission shaft protection device according to claim 1 or 2, which is characterized in that the protective cover includes the first protection
Shell and the second protective shell, first protective shell are fixedly connected on one end of the bracket, one end of first protective shell with
One end of second protective shell is hinged, and the other end of first protective shell and the other end of second protective shell are detachable
Connection.
8. transmission shaft protection device according to claim 7, which is characterized in that the limited block include the first limit body and
Second limit body, first limit body are fixedly connected in first protective shell, and second limit body is fixedly connected on
In second protective shell.
9. transmission shaft protection device according to claim 8, which is characterized in that first limit body is towards described second
The side of limit body is recessed inwardly to form the first mounting groove, side and institute of second limit body towards first limit body
It states the corresponding position of the first mounting groove to be recessed inwardly to form the second mounting groove, when first mounting groove is docked with the second mounting groove
Form the mounting hole.
10. a kind of threst stand, which is characterized in that including the described in any item transmission shaft protection dresses of claim 1-9
It sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821117329.6U CN208333871U (en) | 2018-07-13 | 2018-07-13 | Transmission shaft protection device and threst stand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821117329.6U CN208333871U (en) | 2018-07-13 | 2018-07-13 | Transmission shaft protection device and threst stand |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208333871U true CN208333871U (en) | 2019-01-04 |
Family
ID=64784583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821117329.6U Active CN208333871U (en) | 2018-07-13 | 2018-07-13 | Transmission shaft protection device and threst stand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208333871U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022183232A1 (en) | 2021-03-04 | 2022-09-09 | Kristl, Seibt & Co. Gesellschaft M.B.H. | Method and device for monitoring the position of a shaft |
-
2018
- 2018-07-13 CN CN201821117329.6U patent/CN208333871U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022183232A1 (en) | 2021-03-04 | 2022-09-09 | Kristl, Seibt & Co. Gesellschaft M.B.H. | Method and device for monitoring the position of a shaft |
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