CN107144308B - Displacement and speed detection device and detection method thereof - Google Patents
Displacement and speed detection device and detection method thereof Download PDFInfo
- Publication number
- CN107144308B CN107144308B CN201710550898.3A CN201710550898A CN107144308B CN 107144308 B CN107144308 B CN 107144308B CN 201710550898 A CN201710550898 A CN 201710550898A CN 107144308 B CN107144308 B CN 107144308B
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- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 42
- 230000005540 biological transmission Effects 0.000 claims description 20
- 230000006698 induction Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention provides a displacement and speed detection device and a detection method thereof, belonging to the technical field of machinery. It has solved the low problem of current detection device detection precision. The displacement and speed detection device and the detection method thereof comprise the following steps: a bracket; the mobile platform is arranged on the bracket; the driving piece is arranged on the bracket, and is provided with a driving shaft connected with the moving platform, and the driving shaft can drive the moving platform to synchronously move along the bracket; the detection piece is arranged on the mobile platform, can synchronously move along with the mobile platform, and can detect the displacement and the moving speed of the mobile platform. The displacement and speed detection device and the detection method thereof have the advantages of simple structure and high detection precision.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to a displacement and speed detection device and a detection method thereof.
Background
The forklift is a transport vehicle for loading and unloading, stacking and short-distance transport of pallet cargos, and is widely applied to ports, stations, airports, goods yards, factory workshops, warehouses, circulation centers, distribution centers and the like, and is an essential transport device for pallet and container transport in loading and unloading pallet cargos in cabins, carriages and containers. In the prior art, the detection precision of the detection device for detecting the displacement and the speed of the forklift is low, so that the error is caused by the judgment of the displacement speed of the forklift by a driver, the collision accident is easy to occur, and the running safety of the forklift is influenced. In summary, in order to solve the structural shortages of the existing displacement and speed detection device for a forklift, it is necessary to design a displacement and speed detection device with simple structure and high detection precision and a detection method thereof.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a displacement and speed detection device with simple structure and high detection precision and a detection method thereof.
The aim of the invention can be achieved by the following technical scheme: a displacement and velocity detection apparatus comprising:
a bracket;
the mobile platform is arranged on the bracket;
the driving piece is arranged on the bracket, and is provided with a driving shaft connected with the moving platform, and the driving shaft can drive the moving platform to synchronously move along the bracket;
the detection piece is arranged on the mobile platform, can synchronously move along with the mobile platform, and can detect the displacement and the moving speed of the mobile platform.
In the displacement and speed detection device, the driving shaft is provided with the transmission piece, two ends of the transmission piece are respectively connected with the driving shaft and the moving platform, and the driving shaft can drive the moving platform to synchronously move along the bracket through the circumferential rotation of the driving shaft.
In the displacement and speed detection device, the number of the transmission parts is at least two, the two transmission parts comprise racks and gears, the two racks are parallel and linearly arranged on the support, the two gears are sleeved on the driving shaft, and the two gears are respectively meshed with the corresponding racks.
In the displacement and speed detection device, the driving piece further comprises an upper mounting plate, a lower mounting plate and a motor, the upper end of the driving shaft is connected with the motor, the lower end of the driving shaft penetrates through the upper mounting plate and abuts against the lower mounting plate, the two gears are sleeved on the driving shaft, and the two gears are located between the upper mounting plate and the lower mounting plate.
In the displacement and speed detecting device, the driving shaft is sleeved with the guide piece, the outer circumference of the guide piece is propped against the support, and when the support moves relative to the driving shaft, the support can drive the guide piece to rotate circumferentially.
In the above displacement and speed detecting device, the guide member includes a first guide wheel and a second guide wheel, the first guide wheel and the second guide wheel are both sleeved on the driving shaft, and the outer circumferences of the first guide wheel and the second guide wheel are both propped against the bracket.
In the displacement and speed detection device, two rollers which are arranged in parallel are arranged on the lower surface of the upper mounting plate, mounting screws are arranged on the two rollers, the upper ends of the mounting screws penetrate through the rollers and are in threaded connection with the mounting plate, and the outer circumferences of the two rollers are propped against the inner side wall of the rack.
In the displacement and speed detecting device, the detecting member comprises a controller and an encoder electrically connected with the controller, the encoder is arranged on the moving platform, and can count the teeth of the gear and transmit the value to the controller.
In the above-mentioned displacement and speed detection device, the detecting element still includes sensing piece and proximity switch, the sensing piece sets up on the support, proximity switch sets up on moving platform, and on the proximity switch can produce the signal of telecommunication and transmit to the controller when the sensing piece was close to for the encoder counts again.
A detection method of a displacement and speed detection device comprises the following steps:
1. the motor drives the gear to rotate circumferentially through the driving shaft, and the gear can move in the transverse direction relative to the rack, so that the moving platform transversely moves relative to the bracket;
2. the encoder records the number of teeth of the gear and transmits the number to the controller, and the controller can calculate the displacement and the moving speed of the moving platform through the electric signals;
3. when the sensing block approaches the proximity switch, an electrical signal can be generated and transmitted to the controller, so that the encoder re-counts.
Compared with the prior art, the invention comprises the bracket and the moving platform, wherein the driving piece is arranged on the bracket, the detecting piece is arranged on the moving platform, and when the driving piece drives the moving platform to synchronously move, the detecting piece detects the displacement and the moving speed of the moving platform, the structure is simple, and the detecting precision is improved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is an enlarged schematic view of the structure at a in fig. 1.
Fig. 3 is a schematic view of another view of the present invention.
100, a bracket; 110. a gear; 120. a rack; 130. an upper mounting plate; 131. a lower mounting plate; 132. a motor; 133. a drive shaft; 140. the first guide wheel; 141. the second guide wheel; 150. a roller; 151. installing a screw; 160. a guide wheel;
200. a mobile platform; 210. an encoder; 220. an induction block; 230. and a proximity switch.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 to 3, the displacement and speed detecting device comprises a bracket 100, wherein a driving member, a moving platform 200 and a detecting member are arranged on the bracket 100, the driving member can drive the moving platform 200 to linearly move, and the detecting member can detect the displacement and the moving speed of the moving platform 200.
The invention is applied to the technical field of forklifts, the driving piece can drive the mobile platform 200 to move and realize synchronous movement of the forklifts and the mobile platform 200, and meanwhile, the detection piece can know the displacement and the speed of the forklifts by detecting the displacement and the speed of the mobile platform 200, so that the use of users is convenient, and the use safety of the forklifts is improved.
The driving member is provided with a transmission member, and two ends of the transmission member are respectively connected with the driving member and the moving platform 200, so that the circumferential rotation of the driving member can drive the moving platform 200 to linearly move along the bracket 100 through the transmission member.
Preferably, the number of the driving members is at least two, and the two driving members are disposed on the driving member in parallel, and the driving member can move the moving platform 200 relative to the bracket 100 through the combined action of the two driving members.
The two transmission parts are respectively arranged at the upper end and the lower end of the driving part, and the reaction force generated by the driving part driving the mobile platform 200 can be distributed on the two transmission parts, so that the service life of the transmission parts is ensured.
Further, the two driving members include racks 120 and gears 110, the two racks 120 are parallel and are linearly disposed on the support 100, the two gears 110 are sleeved on the driving member, the two gears 110 are respectively meshed with the corresponding racks 120, the driving member can drive the gears 110 to circumferentially rotate, and the driving member can drive the moving platform 200 to linearly move along the racks 120 due to the meshing of the gears 110 and the racks 120.
The transmission mode adopts the gear 110 to be meshed with the rack 120, so that the transmission precision of the invention is ensured, and the service life of the invention is prolonged.
The driving member includes a motor 132 and a driving shaft 133, wherein the driving shaft 133 is vertically disposed, the upper end of the driving shaft 133 is connected with the motor 132, the lower end of the driving shaft 133 passes through the two gears 110, and the motor 132 can drive the two gears 110 to synchronously rotate through the driving shaft 133, so that the synchronism of the transmission of the racks 120 of the two gears 110 is realized, and the transmission precision of the invention is improved.
Preferably, the driving member further comprises an upper mounting plate 130 and a lower mounting plate 131 which are arranged in parallel, the motor 132 is arranged above the upper mounting plate 130, and the lower end of the driving shaft 133 passes through the upper mounting plate 130 and abuts against the lower mounting plate 131, so that the rotation stability of the driving shaft 133 is ensured.
Further, the gear 110 and the rack 120 are located between the upper mounting plate 130 and the lower mounting plate 131, so that the stability of the driving shaft 133 driving the gear 110 to rotate is improved, and the phenomenon that the driving shaft 133 shakes in the rotation process to influence the transmission precision of the gear 110 and the rack 120 is avoided.
A guide member is sleeved on the driving shaft 133, the outer circumference of the guide member is abutted against the bracket 100, and when the driving shaft 133 moves in the transverse direction relative to the bracket 100, the bracket 100 can drive the guide member to rotate around the driving shaft 133 circumferentially, and the guide member is arranged to ensure that a certain interval is formed between the driving shaft 133 and the bracket 100, so that the gear 110 and the rack 120 work normally; at the same time, the guide can convert sliding friction between the driving shaft 133 and the bracket 100 into rolling friction, reducing friction between the driving shaft 133 and the bracket 100.
Preferably, the guide member includes a first guide wheel 140 and a second guide wheel 141, and the first guide wheel 140 and the second guide wheel 141 are respectively disposed below the two gears 110, and bearings are disposed between the first guide wheel 140 and the second guide wheel 141 and the driving shaft 133, so that the first guide wheel 140 and the second guide wheel 141 can circumferentially rotate around the driving shaft 133 through the bearings.
The support 100 is provided with the abutting portions corresponding to the first guide wheel 140 and the second guide wheel 141 respectively, the outer circumferences of the first guide wheel 140 and the second guide wheel 141 are abutted against the corresponding abutting portions, and the abutting portions are made of flexible materials, so that collision force is reduced, and service life is prolonged.
Two parallel and transversely arranged rollers 150 are arranged on the lower surface of the upper mounting plate 130, mounting screws 151 are arranged on the two rollers 150, the rollers 150 can circumferentially rotate around the mounting screws 151, specifically, the upper ends of the mounting screws 151 penetrate through the rollers 150 and are in threaded connection with the upper mounting plate 130, and the lower ends of the mounting screws 151 are abutted against the rollers 150.
The outer circumference of the roller 150 abuts against the inner side wall of the rack 120, the gear 110, the rack 120 and the roller 150 are on the same horizontal plane, the rack 120 is arranged between the gear 110 and the roller 150, the roller 150 ensures that the gear 110 and the rack 120 are always meshed, and the phenomenon that the normal working phenomenon of the invention is influenced due to the separation of the gear 110 and the rack 120 in the working process is avoided.
The upper mounting plate 130 is provided with a mounting groove, a guide wheel 160 is longitudinally hinged in the mounting groove, the outer circumference of the guide wheel 160 abuts against the side wall of the rack 120, and when the rack 120 moves in the transverse direction, the rack 120 can drive the guide wheel 160 to circumferentially rotate around the hinge shaft.
The arrangement of the roller 150 limits the displacement of the rack 120 in the transverse direction, the arrangement of the guide wheel 160 limits the displacement of the rack 120 in the vertical direction, the installation accuracy of the rack 120 is ensured through the roller 150 and the guide wheel 160, and the phenomenon that the normal working phenomenon of the invention is influenced due to the position deviation in the working process of the gear 110 and the rack 120 is avoided.
The detecting element comprises a controller and an encoder 210 electrically connected with the controller, wherein the encoder 210 is arranged on the mobile platform 200, the front end of the encoder 210 is aligned with the gear 110, the encoder 210 can count the number of teeth rotated by the gear 110 by taking the encoder 210 as a starting point, and the encoder 210 can generate corresponding electric signals to be transmitted to the controller.
Preferably, in the counting process of the encoder 210, the encoder 210 forms an electrical signal in the form of square wave and transmits the electrical signal to the controller, and meanwhile, the controller can determine the rotation direction of the gear 110 according to the square wave, so as to know whether the gear 110 rotates in the forward direction or in the reverse direction.
Further, the detecting element further includes an induction block 220 and a proximity switch 230, where the induction block 220 is disposed on the support 100, the proximity switch 230 is disposed on the mobile platform 200, and the proximity switch 230 is electrically connected with the controller, and in the working process, when the induction block 220 approaches to the proximity switch 230, the proximity switch 230 can generate a corresponding electrical signal and transmit the electrical signal to the controller, so that the controller controls the encoder 210 to clear, thereby re-counting the codes, and improving the accuracy of counting of the encoder 210.
The detection method of the displacement and speed detection device comprises the following steps:
1. the motor 132 drives the gear 110 to circumferentially rotate through the driving shaft 133, and the gear 110 can move in a transverse direction relative to the rack 120, so that the moving platform 200 transversely moves relative to the bracket 100;
2. the encoder 210 records the number of teeth by which the gear 110 rotates and transmits the number to the controller, which can calculate the displacement and the moving speed of the moving platform 200 through the electrical signals;
3. when the sensing block 220 approaches the proximity switch 230, an electrical signal can be generated and transmitted to the controller, so that the encoder 210 counts again;
the specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. A displacement and velocity detection apparatus, comprising:
a bracket;
the mobile platform is arranged on the bracket;
the driving piece is arranged on the bracket, a driving shaft connected with the moving platform is arranged on the driving piece, and the driving shaft can drive the moving platform to move along the bracket and enable the forklift to synchronously move with the moving platform;
the detection piece is arranged on the mobile platform, can synchronously move along with the mobile platform, and can detect the displacement and the moving speed of the mobile platform;
the driving shaft is provided with a transmission piece, two ends of the transmission piece are respectively connected with the driving shaft and the moving platform, and the circumferential rotation of the driving shaft can drive the moving platform to synchronously move along the bracket through the transmission piece;
the number of the transmission parts is at least two, the two transmission parts comprise racks and gears, the two racks are parallel and are arranged on the bracket in a straight line, the two gears are sleeved on the driving shaft, and the two gears are respectively meshed with the corresponding racks;
the detecting piece comprises a controller and an encoder electrically connected with the controller, the encoder is arranged on the moving platform, and can count the teeth of the gear and transmit an electric signal generated by the value to the controller;
the detection piece further comprises an induction block and a proximity switch, the induction block is arranged on the support, the proximity switch is arranged on the moving platform, and when the induction block approaches the proximity switch, an electric signal can be generated and transmitted to the controller, so that the encoder counts again;
the encoder forms an electric signal in the form of square waves in the counting process and transmits the electric signal to the controller, and the controller judges whether the gear rotates positively or reversely according to the square waves.
2. The displacement and velocity detection apparatus according to claim 1, wherein the driving member further comprises an upper mounting plate, a lower mounting plate and a motor, the upper end of the driving shaft is connected to the motor, the lower end of the driving shaft passes through the upper mounting plate and abuts against the lower mounting plate, the two gears are both sleeved on the driving shaft, and the two gears are both located between the upper mounting plate and the lower mounting plate.
3. A displacement and velocity detecting device according to claim 2, wherein the drive shaft is provided with a guide member, the outer circumference of which abuts against the support, and the support is adapted to rotate circumferentially when the support moves relative to the drive shaft.
4. A displacement and velocity detection apparatus according to claim 3, wherein the guide member comprises a first guide wheel and a second guide wheel, the first guide wheel and the second guide wheel are both sleeved on the drive shaft and the outer circumferences of the first guide wheel and the second guide wheel are both abutted against the bracket.
5. A displacement and velocity detecting device according to claim 2, wherein two parallel rollers are provided on the lower surface of the upper mounting plate, mounting screws are provided on both rollers, the upper ends of the mounting screws pass through the rollers and are screwed onto the mounting plate, and the outer circumferences of both rollers are abutted against the inner side walls of the rack.
6. A method of detecting a displacement and velocity detecting device using the displacement and velocity detecting device according to any one of claims 1 to 5, comprising the steps of:
1. the motor drives the gear to rotate circumferentially through the driving shaft, and the gear can move in the transverse direction relative to the rack, so that the moving platform transversely moves relative to the bracket;
2. the encoder records the number of teeth of the gear and transmits the number to the controller, and the controller can calculate the displacement and the moving speed of the moving platform through the electric signals;
3. when the sensing block approaches the proximity switch, an electrical signal can be generated and transmitted to the controller, so that the encoder re-counts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710550898.3A CN107144308B (en) | 2017-07-07 | 2017-07-07 | Displacement and speed detection device and detection method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710550898.3A CN107144308B (en) | 2017-07-07 | 2017-07-07 | Displacement and speed detection device and detection method thereof |
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| CN107144308A CN107144308A (en) | 2017-09-08 |
| CN107144308B true CN107144308B (en) | 2024-02-13 |
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| CN114993840A (en) * | 2022-06-06 | 2022-09-02 | 徐州瑞田工程机械有限公司 | Adjustable silencer fatigue test device |
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