CN111392645A - Car lifting jack protection system - Google Patents
Car lifting jack protection system Download PDFInfo
- Publication number
- CN111392645A CN111392645A CN202010304397.9A CN202010304397A CN111392645A CN 111392645 A CN111392645 A CN 111392645A CN 202010304397 A CN202010304397 A CN 202010304397A CN 111392645 A CN111392645 A CN 111392645A
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- Prior art keywords
- distance
- lifting jack
- collision
- car lifting
- pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention relates to the field of motor train unit maintenance, and discloses a car lifting jack protection system. The car lifting jack protection system comprises an anti-collision protection assembly, a pressure detection assembly and a control module, wherein the anti-collision protection assembly comprises an anti-collision touch panel and a first distance sensor, the anti-collision touch panel is arranged at the end part of the supporting head in a sliding mode, the first distance sensor is used for measuring the distance between the anti-collision touch panel and the supporting head, and when the distance between the anti-collision touch panel and the supporting head is smaller than a first preset distance, the movement of the supporting head is stopped. The pressure detection assembly is used for detecting the pressure of the supporting head, and when the pressure of the supporting head is smaller than a preset pressure value, the movement of the car lifting jack is stopped. The control module is respectively and electrically connected with the anti-collision protection assembly and the pressure detection assembly, and the control module is used for controlling the movement of the car lifting jack and the supporting head. The invention has various and perfect functions and high safety, has strict electric interlocking protection function and fault diagnosis function, ensures the safety of rack falling operation in the overhauling of the motor train unit and prevents the motor train unit from overturning accidents.
Description
Technical Field
The invention relates to the field of motor train unit overhauling, in particular to a car lifting jack protection system.
Background
In the operation of the motor train unit, in order to ensure the operation safety of the motor train unit, the motor train unit has a certain overhaul period, after the motor train unit reaches the specified operation mileage, the bogie of the motor train unit needs to be replaced and maintained, the motor train unit needs to be integrally lifted to a proper height at the moment, the bogie needs to be taken down, the maintained bogie needs to be installed on the motor train unit again, and the motor train unit needs to be used in the operation process. The pit type car lifting jack is characterized in that a plurality of bogie lifting devices with lifting tracks and car body lifting devices are arranged on two sides of the pit type car lifting jack at intervals, the bogie lifting devices of the pit type car lifting jack can lift a whole train of motor train units to reach a proper height, the car body lifting devices support the car body to keep the corresponding height after lifting, and after a connecting part of a bogie and the car body is disassembled, the bogie lifting devices can drop the bogie, so that the bogie is separated from the car body. A fixed rail is arranged between two adjacent bogie lifting devices, and the fixed rail and the lifting rails on the bogie lifting devices form a continuous rail for the running of the motor train unit and the inlet and outlet of the disassembled bogie.
The motor train unit pit car lifting jack is a highly automated complex system project and must have strict electrical interlocking protection function and fault diagnosis function so as to ensure the car lifting safety. However, in the current maintenance operation of the car lifting jack, the existing car lifting jack protection system has single function, is not perfect enough and has poor safety.
Disclosure of Invention
Based on the above problems, the invention aims to provide a car lifting jack protection system, which improves the safety of the overhauling operation of a motor train unit.
In order to achieve the purpose, the invention adopts the following technical scheme:
a car lifting jack protection system, comprising:
the anti-collision protection assembly comprises an anti-collision contact plate and a first distance sensor, the anti-collision contact plate is arranged at the end part of the support head in a sliding mode, the first distance sensor is used for measuring the distance between the anti-collision contact plate and the support head, and when the distance between the anti-collision contact plate and the support head is smaller than a first preset distance, the support head stops moving;
the pressure detection assembly is used for detecting the pressure of the supporting head, and when the pressure of the supporting head is smaller than a preset pressure value, the movement of the car lifting jack is stopped;
and the control module is respectively electrically connected with the anti-collision protection assembly and the pressure detection assembly and is used for controlling the movement of the car lifting jack and the supporting head.
As a preferable scheme of the car lifting jack protection system, the anti-collision protection assembly further comprises an elastic piece, and the elastic piece is arranged between the anti-collision contact plate and the supporting head.
As a preferable scheme of the car lifting jack protection system, the support head is provided with a threaded hole, a bolt is arranged in the threaded hole, and the first distance sensor is mounted on the bolt.
As a preferable scheme of the car lifting jack protection system, the anti-collision touch plate is provided with a guide post, the support head is provided with a guide hole, the axis of the guide hole is parallel to the axis of the threaded hole, and the guide post is slidably arranged in the guide hole.
As a preferable scheme of the car lifting jack protection system, the pressure detection assembly comprises a working nut, a main lifting screw and a pressure sensor, the support head is arranged on the working nut, the working nut is in threaded connection with the main lifting screw, and the pressure sensor is arranged between the support head and the working nut and used for measuring the pressure between the support head and the working nut.
As a preferable scheme of the car lifting jack protection system of the present invention, the pressure detection assembly further includes a display module, and the display module is configured to display a pressure value measured by the pressure sensor.
As a preferable scheme of the car lifting jack protection system, the pressure detection assembly further comprises a first alarm module, and when a pressure value measured by the pressure sensor exceeds a preset pressure value, the first alarm module sends an alarm signal.
As a preferable scheme of the car lifting jack protection system, the car lifting jack protection system further comprises a wear protection assembly, the wear protection assembly comprises a safety nut and a second distance sensor, the safety nut is mounted on the main lifting screw and located below the working nut, and the second distance sensor is used for measuring the distance between the safety nut and the working nut.
As a preferable scheme of the car lifting jack protection system, the wear protection assembly further comprises a second alarm module, and when the distance measured by the second distance sensor is smaller than a second preset distance, the second alarm module sends an alarm signal.
As a preferable scheme of the car lifting jack protection system of the present invention, the second distance sensor includes an inductive proximity sensor and a metal sensing strip, the inductive proximity sensor is mounted on the safety nut, the metal sensing strip is disposed on the working nut, and a distance between the safety nut and the working nut is measured by the inductive proximity sensor and the metal sensing strip.
The invention has the beneficial effects that:
the invention provides a protection system for a car lifting jack, which comprises an anti-collision contact plate and a first distance sensor, wherein the anti-collision contact plate is arranged at the end part of a supporting head in a sliding mode, the distance between the anti-collision contact plate and the supporting head is measured through the first distance sensor, when the distance between the anti-collision contact plate and the supporting head is smaller than a first preset distance, the movement of the supporting head is stopped to prevent a motor train unit body from being damaged, the pressure of the supporting head is detected through a pressure detection assembly, when the pressure of the supporting head is smaller than a preset pressure value, the movement of the car lifting jack is stopped to prevent the supporting head from being unloaded to cause accidents, a control module is respectively and electrically connected with the anti-collision protection assembly and the pressure detection assembly, and the movement of the car lifting jack and. The car lifting jack protection system provided by the invention has the advantages of various and complete functions and high safety, has strict electrical interlocking protection function and fault diagnosis function, ensures the safety of the car lifting operation in the overhauling of the motor train unit, and prevents the motor train unit from overturning accidents.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an anti-collision protection assembly in a car lifting jack protection system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a pressure detection assembly in the car lifting jack protection system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a wear protection assembly in a car lifting jack protection system according to an embodiment of the present invention.
In the figure:
1-an anti-collision protection component; 2-a pressure detection component; 3-a wear protection component;
11-anti-collision touch panel; 12-an elastic member; 13-a first distance sensor;
111-guide posts; 112-a pilot hole;
121-accommodating grooves;
131-a threaded hole; 132-a bolt;
21-a working nut; 22-a main lifting screw; 23-a pressure sensor; 24-a display module;
31-a safety nut; 32-a second distance sensor;
321-an inductive proximity sensor; 322-metal sensing pieces;
100-supporting the head.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a car lifting jack protection system, as shown in fig. 1 and fig. 2, the car lifting jack protection system includes an anti-collision protection assembly 1, a pressure detection assembly 2 and a control module.
Specifically, as shown in fig. 1, the anti-collision protection assembly 1 includes an anti-collision contact plate 11 and a first distance sensor 13, the anti-collision contact plate 11 is slidably disposed at an end of the support head 100, the first distance sensor 13 is configured to measure a distance between the anti-collision contact plate 11 and the support head 100, and when the distance between the anti-collision contact plate 11 and the support head 100 is smaller than a first preset distance, the support head 100 stops moving. The crash protection assembly 1 further comprises an elastic member 12, and the elastic member 12 is disposed between the crash pad 11 and the head 100. When the supporting head 100 is transversely and automatically aligned, the anti-collision touch plate 11 is in contact with the motor train unit train body, the distance between the anti-collision touch plate 11 and the supporting head 100 is reduced due to extrusion, the motor train unit train body can be prevented from being damaged under the buffer protection effect of the elastic piece 12, when the distance between the anti-collision touch plate 11 and the supporting head 100 is smaller than a first preset distance, the supporting head 100 is controlled to stop moving through the control system of the motor train unit lifter, the motor train unit train body is prevented from being damaged, and the safety of motor train unit overhauling operation is improved.
To facilitate mounting of the first distance sensor 13, optionally, a threaded hole 131 is provided on the holder head 100, a bolt 132 is provided in the threaded hole 131, and the first distance sensor 13 is mounted on the bolt 132. For convenience of measurement, optionally, the first distance sensor 13 is an inductive proximity sensor, a metal induction sheet is arranged on the anti-collision touch plate 11, and the distance between the anti-collision touch plate 11 and the support head 100 is measured through the inductive proximity sensor and the metal induction sheet. The inductive proximity sensor and the metal induction sheet are adopted, so that the complexity of a corresponding measuring program can be reduced, and the inductive proximity sensor and the metal induction sheet are better connected with a control system of the existing car lifting jack.
In order to facilitate the sliding of the anti-collision contact plate 11 relative to the end of the bracket head 100, optionally, a guide post 111 is provided on the anti-collision contact plate 11, a guide hole 112 is provided on the bracket head 100, an axis of the guide hole 112 is parallel to an axis of the threaded hole 131, and the guide post 111 is slidably disposed in the guide hole 112. In order to ensure smooth sliding of the crash pad 11, the guide posts 111 may be provided in plurality, and the plurality of guide posts 111 may be uniformly distributed along the circumferential direction of the threaded hole 131.
In order to ensure uniform stress on the crash pad 11, the elastic member 12 may be provided in plurality, and the plurality of elastic members 12 may be uniformly distributed along the circumferential direction of the threaded hole 131. For convenience of drawing materials, the elastic member 12 is optionally a spring. It should be noted that, when the compression stroke of the spring is greater than the first preset distance, that is, the spring is not compressed to the bottom, the first distance sensor 13 triggers the control system to control the carrier head 100 to stop moving. In order to facilitate the installation of the spring, optionally, an accommodating groove 121 is provided on the holder head 100, one end of the spring abuts against the bottom of the accommodating groove 121, and the other end abuts against the anti-collision touch plate 11. For the positioning of the mounting position of the spring, optionally, a positioning column is disposed in the accommodating groove 121, and the spring is sleeved on the positioning column.
In order to further prevent the crashproof touch panel 11 from damaging the motor train unit body, optionally, a buffer pad is arranged on one side of the crashproof touch panel 11, which is back to the supporting head 100, and the buffer pad can be made of rubber, so that the motor train unit is durable and has good elasticity.
Specifically, the pressure detection assembly 2 is used for detecting the pressure of the supporting head 100, and when the pressure of the supporting head 100 is smaller than a preset pressure value, the movement of the car lifting jack is stopped. The control module is respectively and electrically connected with the anti-collision protection assembly 1 and the pressure detection assembly 2, and the control module is used for controlling the movement of the car lifting jack and the supporting head 100. The bearing uniformity of the supporting heads 100 of the bogie trucks directly relates to the safety of the bogie operation of the motor train unit.
In order to facilitate the detection of the pressure of the holding head 100, optionally, the pressure detection assembly 2 includes a working nut 21, a main lifting screw 22 and a pressure sensor 23, the holding head 100 is disposed on the working nut 21, the working nut 21 is screwed on the main lifting screw 22, and the pressure sensor 23 is disposed between the holding head 100 and the working nut 21 for measuring the pressure between the holding head 100 and the working nut 21. When the car lifting jack is in a car lifting loading working condition, the main lifting lead screw 22 drives the supporting head 100 to lift through the working nut 21 and the pressure sensor 23.
For the convenience of viewing by the operator, the pressure detecting assembly 2 optionally further includes a display module 24, and the display module 24 is configured to display the pressure value measured by the pressure sensor 23. In order to facilitate timely handling of emergency situations, optionally, the pressure detection assembly 2 further includes a first alarm module, and when the pressure value measured by the pressure sensor 23 exceeds a preset pressure value, the first alarm module sends an alarm signal.
The main lifting screw 22 and the working nut 21 bear the weight of the train body of the motor train unit, the pressure intensity of the spiral surface is extremely high, and particularly the material hardness of the working nut 21 is low, so that the motor train unit is easy to wear. To solve this problem, optionally, as shown in fig. 3, the car lifting jack protection system further includes a wear protection assembly 3, the wear protection assembly 3 includes a safety nut 31 and a second distance sensor 32, the safety nut 31 is mounted on the main lifting screw 22 and is located below the working nut 21, and the second distance sensor 32 is used for measuring the distance between the safety nut 31 and the working nut 21.
In order to indicate the excessive wear condition of the working nut 21, optionally, the wear protection assembly 3 further comprises a second alarm module, and when the distance measured by the second distance sensor 32 is smaller than a second preset distance, the second alarm module sends out an alarm signal.
To facilitate measuring the distance between the safety nut 31 and the working nut 21, optionally, the second distance sensor 32 includes an inductive proximity sensor 321 and a metal sensing piece 322, the inductive proximity sensor 321 is mounted on the safety nut 31, the metal sensing piece 322 is disposed on the working nut 21, and the distance between the safety nut 31 and the working nut 21 is measured by the inductive proximity sensor 321 and the metal sensing piece 322. In this embodiment, a gap of 4mm is maintained between the inductive proximity sensor 321 and the metal sensing plate 322, and when the gap is smaller than 3mm due to excessive wear of the working nut 21, the inductive proximity sensor 321 transmits a signal to the control computer through the communication network. When the transition abrasion of the working nut 21 occurs in the process of the rack falling operation, the computer control system gives an alarm and stops, and once the working nut 21 is damaged, the safety nut 31 bears the weight of the motor train unit, so that the safety of the rack falling operation is ensured, and the motor train unit overturn accident is prevented.
The car lifting jack protection system provided by the embodiment has various and perfect functions and high safety, has strict electrical interlocking protection function and fault diagnosis function, ensures the safety of the car lifting operation in the motor train unit overhauling, and prevents the motor train unit overturning accident.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments illustrated herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. The utility model provides a car lifting jack protection system which characterized in that includes:
the anti-collision protection assembly (1) comprises an anti-collision contact plate (11) and a first distance sensor (13), wherein the anti-collision contact plate (11) is arranged at the end part of a support head (100) in a sliding mode, the first distance sensor (13) is used for measuring the distance between the anti-collision contact plate (11) and the support head (100), and when the distance between the anti-collision contact plate (11) and the support head (100) is smaller than a first preset distance, the support head (100) stops moving;
the pressure detection assembly (2) is used for detecting the pressure of the supporting head (100), and when the pressure of the supporting head (100) is smaller than a preset pressure value, the movement of the car lifting jack is stopped;
and the control module is respectively electrically connected with the anti-collision protection assembly (1) and the pressure detection assembly (2), and is used for controlling the movement of the car lifting jack and the supporting head (100).
2. The car lifter protection system according to claim 1, wherein the anti-collision protection assembly (1) further comprises an elastic member (12), and the elastic member (12) is disposed between the anti-collision touch plate (11) and the supporting head (100).
3. The car lifting jack protection system according to claim 2, wherein a threaded hole (131) is formed in the supporting head (100), a bolt (132) is arranged in the threaded hole (131), and the first distance sensor (13) is mounted on the bolt (132).
4. The car lifting jack protection system according to claim 3, wherein a guide post (111) is arranged on the anti-collision touch plate (11), a guide hole (112) is arranged on the support head (100), the axis of the guide hole (112) is parallel to the axis of the threaded hole (131), and the guide post (111) is slidably arranged in the guide hole (112).
5. The car lifting jack protection system according to any one of claims 1-4, wherein the pressure detection assembly (2) comprises a working nut (21), a main lifting screw (22) and a pressure sensor (23), the support head (100) is arranged on the working nut (21), the working nut (21) is in threaded connection with the main lifting screw (22), and the pressure sensor (23) is arranged between the support head (100) and the working nut (21) and used for measuring the pressure between the support head (100) and the working nut (21).
6. The car lifting jack protection system according to claim 5, wherein the pressure detection assembly (2) further comprises a display module (24), and the display module (24) is used for displaying the pressure value measured by the pressure sensor (23).
7. The car lifting jack protection system according to claim 5, wherein the pressure detection assembly (2) further comprises a first alarm module, and the first alarm module sends out an alarm signal when the pressure value measured by the pressure sensor (23) exceeds a preset pressure value.
8. The car lifting jack protection system according to claim 5, further comprising a wear protection assembly (3), wherein the wear protection assembly (3) comprises a safety nut (31) and a second distance sensor (32), the safety nut (31) is mounted on the main lifting screw (22) and located below the working nut (21), and the second distance sensor (32) is used for measuring a distance between the safety nut (31) and the working nut (21).
9. The car lifter protection system according to claim 8, wherein the wear protection assembly (3) further comprises a second alarm module that emits an alarm signal when the distance measured by the second distance sensor (32) is less than a second preset distance.
10. The car lifting jack protection system according to claim 8, wherein the second distance sensor (32) comprises an inductive proximity sensor (321) and a metal sensing piece (322), the inductive proximity sensor (321) is mounted on the safety nut (31), the metal sensing piece (322) is disposed on the working nut (21), and the distance between the safety nut (31) and the working nut (21) is measured through the inductive proximity sensor (321) and the metal sensing piece (322).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010304397.9A CN111392645A (en) | 2020-04-17 | 2020-04-17 | Car lifting jack protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010304397.9A CN111392645A (en) | 2020-04-17 | 2020-04-17 | Car lifting jack protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111392645A true CN111392645A (en) | 2020-07-10 |
Family
ID=71425201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010304397.9A Pending CN111392645A (en) | 2020-04-17 | 2020-04-17 | Car lifting jack protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111392645A (en) |
-
2020
- 2020-04-17 CN CN202010304397.9A patent/CN111392645A/en active Pending
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