CN108692964B - Braking device of buffering trolley for testing electric cylinder - Google Patents
Braking device of buffering trolley for testing electric cylinder Download PDFInfo
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- CN108692964B CN108692964B CN201810314217.8A CN201810314217A CN108692964B CN 108692964 B CN108692964 B CN 108692964B CN 201810314217 A CN201810314217 A CN 201810314217A CN 108692964 B CN108692964 B CN 108692964B
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- trolley
- buffer
- electric cylinder
- swing arm
- light
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
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- General Physics & Mathematics (AREA)
- Operating, Guiding And Securing Of Roll- Type Closing Members (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a brake device of a buffer trolley for testing an electric cylinder, which mainly solves the technical problems that when a vertical rack falls down to impact the buffer trolley due to the abnormality of the electric cylinder in the prior art, the invention discloses a brake device of a buffer trolley for testing an electric cylinder, which comprises a light curtain component, a backstop device and an anti-derailing device, wherein the light curtain component is arranged on the trolley and used for detecting whether a vertical rack falls off, the backstop device is arranged at the lower part of the trolley and used for preventing the trolley from moving backwards, the anti-derailing device is arranged at the lower part of the trolley and used for preventing the trolley from derailing, the technical scheme that the controller receives the signals transmitted by the light curtain component to control the thrust device to act better solves the problem and can be used for preventing the buffer trolley from backing and derailing.
Description
Technical Field
The invention relates to a braking device of a buffer trolley for testing an electric cylinder.
Background
The electric cylinder is a device for converting the rotary motion of the motor into linear motion, has the advantages of accurately controlling the position, the speed and the thrust, and is widely applied to the fields of mechanical automation, industrial robots, automobiles and the like. In the process of developing and producing the electric cylinder, various performance parameters of the electric cylinder, such as maximum load, thrust, tension, stroke and the like, need to be tested. In the high-power erecting electric cylinder test process, the electric cylinder test buffer trolley is mainly used for supporting the erecting rack when the erecting rack is abnormally powered off and a motor brake fails in the erecting and leveling processes, absorbing the falling impact energy of the erecting rack, and preventing the stalling and falling of the erecting rack from damaging equipment and injuring personnel. In the process of erecting and leveling the erecting rack, the buffer trolley can select the optimal buffer point by moving the position of the buffer trolley. The buffering dolly is small rail car, and when buffering operating mode, the buffering dolly receives the horizontal direction component effect can roll back, not only influences the buffering effect, if roll back speed too big moreover, still can cause the injury to personnel's equipment. Therefore, the braking device for the electric cylinder test buffering trolley is designed, the front end and the rear end of the buffering trolley are provided with the derailing prevention devices, the buffering trolley is braked under the buffering working condition through the backstop device, and the derailing prevention devices and the backstop device act together to mechanically realize the locking of the buffering trolley and the rail during buffering. The stopping device is controlled by the limit switch and acts together with the electromagnet, so that the stopping is electrically guaranteed to be quick and effective, the motor drive of the buffer trolley is timely and quickly cut off when the buffer working condition begins, and the damage of horizontal impact force to a trolley power system is prevented.
Disclosure of Invention
The invention provides a novel braking device of a buffer trolley for testing an electric cylinder, which aims to solve the technical problems that when a vertical rack falls down to impact the buffer trolley due to the abnormality of the electric cylinder, how to detect the falling condition in real time and prepare the buffer trolley in real time to prevent the buffer trolley from backing and derailing in the prior art, and has the characteristic of effectively preventing the buffer trolley from backing.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the utility model provides an electric cylinder test is with arresting gear of buffering dolly, is in including setting up the light curtain subassembly that is used for detecting on the dolly whether the platform frame falls, setting the dolly lower part is used for preventing the stopping device that the dolly backed back and setting are in the dolly lower part is used for preventing the derailment of dolly device, receives through the controller the signal that the light curtain subassembly passed controls the thrust device action.
Further, preferably, the light curtain component is mounted on the buffer swing arm of the trolley, and the light curtain component consists of a light emitter and a light receiver.
More preferably, the light emitter is mounted at one end of the buffer swing arm far away from the fixed point, and the light receiver is mounted at one end of the buffer swing arm near the fixed point.
Preferably, the backstop device includes the backstop rack of installing on ground, movable mounting is in pawl on the dolly, install be used for on the dolly control pawl stretch out the card and go into the backstop rack and retract and leave the electro-magnet of backstop rack and be used for driving the pawl retracts and leaves the spring of backstop rack, the spring sets up the electro-magnet with between the pawl.
More preferably, the light emitter consists of a row of L ED infrared light emitting sources, the light receiver consists of a row of PSD photoelectric detectors, and the light blocking effective output signal is a 24V high-level signal.
More preferably, the light emitter is mounted at one end, far away from the fixed point, of the buffering swing arm through a mounting bracket; the mounting bracket is connected with the buffer swing arm through a roller and a spring, and a protective cover which is arranged on the mounting bracket and used for protecting the illuminator is arranged above the illuminator.
Preferably, the derailment prevention device comprises a limiting plate arranged on the trolley, and a groove matched with the guide rail is formed in the limiting plate.
More preferably, one end of the buffering swing arm is movably fixed with the trolley through a rotating shaft, a plurality of buffers are arranged at the bottom of the buffering swing arm, all the buffers are mounted on a support, and the support is mounted on the trolley.
More preferably, the number of the buffers is two.
The invention has the beneficial effects that: the invention detects whether the erecting rack falls off or not in real time through the light curtain component; the buffer trolley has the advantages that the buffer trolley can be well locked with the track when the vertical rack impacts the buffer trolley through the combination of the retaining device and the derailing prevention device, and the phenomenon of derailing and retreating of the buffer trolley is prevented; the invention well realizes the signal transmission between the light curtain component and the thrust device through the controller.
Drawings
FIG. 1 is a schematic structural diagram of a braking device of a buffering trolley for testing an electric cylinder, provided by the invention;
fig. 2 is a front view of a limiting plate of the braking device of the buffering trolley for the electric cylinder test.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1 and 2, the embodiment discloses a braking device of a buffer trolley for testing an electric cylinder, which includes a light curtain assembly 1 arranged on a trolley 100 for detecting whether a standing rack falls off, a backstop device 2 arranged at the lower part of the trolley 100 for preventing the trolley 100 from backing off, and an derail prevention device 4 arranged at the lower part of the trolley 100 for preventing the trolley 100 from derailing, wherein the backstop device 2 is arranged at the front end or the lower part of the rear end of the trolley 100, and the controller 3 receives a signal transmitted by the light curtain assembly 1 to control the thrust device 2 to act;
the light curtain component 1 is arranged on a buffer swing arm 101 of a trolley 100, the light curtain component 1 is composed of a light emitter 5 and a light receiver 6, the light emitter 5 is arranged at one end, far away from a fixed point, of the buffer swing arm 101, the light receiver 6 is arranged at one end, close to the fixed point, of the buffer swing arm 101, the light emitter 5 is composed of a row of L ED infrared light sources, the light receiver 6 is composed of a row of PSD photoelectric detectors, the light interruption effective output signal is a 24V high-level signal, a light curtain is formed above the buffer swing arm 101 through the light emitter 5 and the light receiver 6, when a vertical rack falls, the vertical rack can be in contact impact with the buffer swing arm 101, at the moment, the vertical rack can block the light curtain firstly before impacting the buffer swing arm 101, when the light curtain is blocked, a signal can be sent to a controller 3, the controller 3 cuts off a driving source of the trolley 100 firstly, and then controls the thrust;
further, the illuminator 5 is mounted on one end of the buffer swing arm 101 far away from the fixed point through a mounting bracket 11, the mounting bracket 11 is connected with the buffer swing arm 101 through a roller and a spring, and a protective cover mounted on the mounting bracket 11 and used for protecting the illuminator 5 is arranged above the illuminator 5; when the mounting bracket 11 is impacted, the mounting bracket can rotate around the roller to reduce the impact force, so that the illuminator 5 is protected, and after the external force is removed, the mounting bracket 11 is restored to the original position through the spring and the illuminator 5 is further protected through the protective cover above the illuminator 5;
the backstop device 2 comprises a backstop rack 7 arranged on the ground, a pawl 8 movably arranged on a trolley 100, an electromagnet 9 arranged on the trolley 100 and used for controlling the pawl 8 to extend out and be clamped into the backstop rack 7 and retract away from the backstop rack 7, and a spring 10 used for driving the pawl 8 to retract away from the backstop rack 7, wherein the spring 10 is arranged between the electromagnet 9 and the pawl 8, and the backstop rack 7 is arranged in parallel with a guide rail;
when the erecting rack falls, the controller 3 receives an output signal from the light curtain assembly 1, when a 24V high level signal is received, the electromagnet 9 is controlled to be powered on, so that the pawl 8 is attracted by the electromagnet 9 to extend out and be clamped into the retaining rack 7, the trolley 100 is prevented from returning, when a low level signal is received, namely the signal is invalid, the controller 3 cuts off the power supply of the electromagnet 9, the electromagnet 9 loses the attraction, the pawl 8 is driven to retract to leave the retaining rack 7 under the action of the spring 10, the friction between the pawl 8 and the retaining rack 7 is avoided, and the trolley 100 is convenient to return;
the derailment prevention device 4 comprises two limiting plates 41 arranged on the trolley 100, the two limiting plates 41 are preferably arranged and are respectively arranged on the lower part of the front end and the lower part of the rear end of the trolley 100, a groove 411 matched with the guide rail is formed in each limiting plate 41, the groove 411 is formed in the lower part of each limiting plate 41, and when the trolley 100 is impacted, the limiting plates 41 are stressed and tightly clamp the rail through the grooves 411 to prevent the trolley 100 from derailing;
furthermore, one end of the buffer swing arm 101 is movably fixed with the trolley 100 through a rotating shaft, the bottom of the buffer swing arm 101 is provided with a plurality of buffers 102, each buffer 102 is connected with the bottom of the buffer swing arm 101 through a joint bearing, preferably two buffers 3 are arranged, all the buffers 102 are installed on a support 103, the support 103 is installed on the trolley 100, and the support 103 is connected with the trolley 100 through a first rotating shaft;
the response time T of the whole system is determined by the installation height h of the light curtain component 1 and the suction time T of the electromagnet 91Control signal transmission time t2Response time t of the light curtain assembly 13And the response time t of the controller 34And (4) jointly determining.
Assuming that the time from the moment when the erecting rack is cut off the light curtain assembly 1 to the moment when the erecting rack is contacted with the buffer swing arm 101 is Δ t, the whole design needs to guarantee:
Δt≥t1+t2+t3+t4
namely, before the vertical stand collides with the buffer swing arm 101, the pawl 8 of the retaining device 2 is completely clamped into the retaining rack 7 and is meshed with the retaining rack 7, so that the trolley is prevented from being horizontally rushed out.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (7)
1. The utility model provides an electronic cylinder test is with arresting gear of buffering dolly which characterized in that: the device comprises a light curtain component (1) arranged on a trolley (100) and used for detecting whether a vertical rack falls off, a backstop device (2) arranged at the lower part of the trolley (100) and used for preventing the trolley (100) from backing off, and an derailing prevention device (4) arranged at the lower part of the trolley (100) and used for preventing the trolley (100) from derailing, wherein a controller (3) is used for receiving signals transmitted by the light curtain component (1) to control the action of the backstop device (2);
the stopping device (2) comprises a stopping rack (7) arranged on the ground, a pawl (8) movably arranged on the trolley (100), an electromagnet (9) arranged on the trolley (100) and used for controlling the pawl (8) to extend out and be clamped into the stopping rack (7) and retract to leave the stopping rack (7), and a spring (10) used for driving the pawl (8) to retract to leave the stopping rack (7), wherein the spring (10) is arranged between the electromagnet (9) and the pawl (8);
the light curtain assembly (1) is installed on a buffer swing arm (101) of the trolley (100), one end of the buffer swing arm (101) is movably fixed with the trolley (100) through a rotating shaft, a plurality of buffers (102) are arranged at the bottom of the buffer swing arm (101), all the buffers (102) are installed on a support (103), and the support is installed on the trolley (100).
2. The braking device of the buffer trolley for the electric cylinder test as claimed in claim 1, wherein the light curtain component (1) is composed of a light emitter (5) and a light receiver (6).
3. The braking device of the buffer trolley for the electric cylinder test as claimed in claim 2, wherein the light emitter (5) is installed at one end of the buffer swing arm (101) far away from the fixed point, and the light receiver (6) is installed at one end of the buffer swing arm (101) close to the fixed point.
4. The braking device of the buffer trolley for the electric cylinder test as claimed in claim 2, wherein the light emitter (5) is composed of a row of L ED infrared light emitting sources, the light receiver (6) is composed of a row of PSD photoelectric detectors, and the light blocking effective output signal is a 24V high level signal.
5. The braking device of the buffer trolley for the electric cylinder test as claimed in claim 3, wherein the illuminator (5) is mounted on one end of the buffer swing arm (101) far away from the fixed point through a mounting bracket (11); the mounting bracket (11) is connected with the buffer swing arm (101) through a roller and a spring, and a protective cover which is arranged on the mounting bracket (11) and used for protecting the illuminator (5) is arranged above the illuminator (5).
6. The braking device of the buffering trolley for the electric cylinder test as claimed in claim 1, wherein the derailment prevention device (4) comprises a limiting plate (41) installed on the trolley (100), and a groove (411) matched with the guide rail is formed in the limiting plate (41).
7. The braking device of the buffer trolley for the electric cylinder test as claimed in claim 1, wherein there are two buffers (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810314217.8A CN108692964B (en) | 2018-04-10 | 2018-04-10 | Braking device of buffering trolley for testing electric cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810314217.8A CN108692964B (en) | 2018-04-10 | 2018-04-10 | Braking device of buffering trolley for testing electric cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108692964A CN108692964A (en) | 2018-10-23 |
| CN108692964B true CN108692964B (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810314217.8A Active CN108692964B (en) | 2018-04-10 | 2018-04-10 | Braking device of buffering trolley for testing electric cylinder |
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| Country | Link |
|---|---|
| CN (1) | CN108692964B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104015651A (en) * | 2014-05-12 | 2014-09-03 | 北京航天发射技术研究所 | Protective device adaptive to rotating and erected rack |
| CN106323665A (en) * | 2016-10-11 | 2017-01-11 | 南京航空航天大学 | Electric cylinder performance testing system |
| CN106372355A (en) * | 2016-09-14 | 2017-02-01 | 北京航空航天大学 | Universal erection load simulation device |
| CN107555314A (en) * | 2017-08-24 | 2018-01-09 | 芜湖市长江起重设备制造有限公司 | A kind of dolly limit damper of bridge crane |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0742070B2 (en) * | 1987-06-16 | 1995-05-10 | 三菱電機株式会社 | Escalator spindle brake device |
| EP3045419A1 (en) * | 2015-01-15 | 2016-07-20 | Siemens Aktiengesellschaft | Safety brake for a lifting device |
-
2018
- 2018-04-10 CN CN201810314217.8A patent/CN108692964B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104015651A (en) * | 2014-05-12 | 2014-09-03 | 北京航天发射技术研究所 | Protective device adaptive to rotating and erected rack |
| CN106372355A (en) * | 2016-09-14 | 2017-02-01 | 北京航空航天大学 | Universal erection load simulation device |
| CN106323665A (en) * | 2016-10-11 | 2017-01-11 | 南京航空航天大学 | Electric cylinder performance testing system |
| CN107555314A (en) * | 2017-08-24 | 2018-01-09 | 芜湖市长江起重设备制造有限公司 | A kind of dolly limit damper of bridge crane |
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| Publication number | Publication date |
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| CN108692964A (en) | 2018-10-23 |
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