LU502594A1 - Anti-collision limit device - Google Patents
Anti-collision limit device Download PDFInfo
- Publication number
- LU502594A1 LU502594A1 LU502594A LU502594A LU502594A1 LU 502594 A1 LU502594 A1 LU 502594A1 LU 502594 A LU502594 A LU 502594A LU 502594 A LU502594 A LU 502594A LU 502594 A1 LU502594 A1 LU 502594A1
- Authority
- LU
- Luxembourg
- Prior art keywords
- contact
- rod
- drive member
- drive
- fixed
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C7/00—Runways, tracks or trackways for trolleys or cranes
- B66C7/16—Devices specially adapted for limiting trolley or crane travel; Arrangements of buffer-stops
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/50—Applications of limit circuits or of limit-switch arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
- B66C15/04—Safety gear for preventing collisions, e.g. between cranes or trolleys operating on the same track
Abstract
The present invention provides an anti-collision limit device, including: a contact switch, wherein the contact switch is mounted on a bottom plate, the contact switch is provided with a swing member used for triggering and making the contact switch generate a contact signal; and a damper, the damper including a contact rod, where the contact rod is slidably mounted on the bottom plate, the contact rod is connected to an elastic member used for damping an impact force on the contact rod, the contact rod is further connected to a drive member, the drive member is provided with a drive surface parallel to a slide direction of the contact rod, an end of the drive surface close to the swing member is provided with a beveled surface smoothly connected to the drive surface, after the contact rod is subjected to an impact force from a moving machine, the contact rod drives the drive member to move synchronously, and the drive member compresses the swing member sequentially through the beveled surface and the drive surface, to make the contact switch generate a contact signal for braking the machine. The combination of a mechanical contact switch and an anti-collision device is used in the present invention, the use cost is low, and safety and reliability are achieved.
Description
ANTI-COLLISION LIMIT DEVICE 0502586
The present invention relates to the field of limit device technologies, and specifically to an anti-collision limit device.
Cranes are currently the main large lifting equipment on the market, and safety protection measures are essential for the operation of cranes. At present, there are mainly two levels of safety protection measures for common commercially available overhead cranes. The first level of safety protection is a control switch, and the second level of safety protection is dampers disposed on two ends of a crane rail beam. Should the first level of safety protection fail, the crane may collide with a damper at full force to easily cause a production accident. To solve the above problem, a person skilled in the art combines a damper with a control switch in the second level of safety protection to form a closed-loop signal feedback. That is, the control switch 1s triggered as soon as the damper 1s compressed under the action of an external force.
The control switch generates a contact signal to feed back the contact signal to a moving machine and controls the machine to brake to decelerate and stop, thereby reducing an impact force to protect corresponding equipment. However, two structural forms are commonly used in the related art. In the first structural form, a damper and a non-contact photoelectric switch are combined. The circuit control of the photoelectric switch in this structural form 1s relatively complex, the use cost is high, the use stability is not very high, and there are high potential safety hazards. In the second structural form, a damper and a mechanical contact switch are combined. In some emergencies or in a case that a machine moves fast, the contact switch may be compressed and damaged before a signal generated by the contact switch can be fed back to the moving machine, or a contact signal generated by the contact switch has already disappeared before being fed back to the moving machine, and as a result the moving machine receives no feedback signal and collides with the damper at full force to damage the damper or even cause a severe production accident. Therefore, based on the above technical problems, the present invention proposes a safe and stable anti-collision limit device that allows for simple control.
A technical problem to be resolved by the present invention is to provide an anti-collision limit LU502594 device that allows for safe use, stable control, and a low cost.
To resolve the foregoing technical problems, the present invention provides an anti-collision limit device, including: a contact switch, the contact switch being mounted on a bottom plate, the contact switch being provided with a swing member used for triggering and making the contact switch generate a contact signal; and a damper, the damper including a contact rod, where the contact rod is slidably mounted on the bottom plate, the contact rod is connected to an elastic member used for damping an impact force on the contact rod, the contact rod is further connected to a drive member, the drive member is provided with a drive surface parallel to a slide direction of the contact rod, an end of the drive surface close to the swing member is provided with a beveled surface smoothly connected to the drive surface, after the contact rod is subjected to an impact force from a moving machine, the contact rod drives the drive member to move synchronously, and the drive member compresses the swing member sequentially through the beveled surface and the drive surface, to make the contact switch generate a contact signal for braking the machine.
In a preferable embodiment, the contact rod and the drive member are both fixed on an upper end of a cylindrical guide rod, a cylindrical guide block coaxial with the guide rod is fixed on a lower end of the guide rod, the guide block is coaxially and slidably mounted in a cylindrical guide tube matching the guide block, and a lower end of the guide tube is fixed on the bottom plate.
In a preferable embodiment, an annular limit plate coaxial with the guide tube is fixed on an upper end of the guide tube, an inner circle diameter of the limit plate is greater than a diameter of the guide rod and is less than a diameter of the guide block, and the guide rod extends upward vertically to pass through a through hole at a center of the limit plate.
In a preferable embodiment, a disk-shaped positioning base coaxial with the guide rod is fixed on the upper end of the guide rod, a disk-shaped mounting base coaxial with the positioning base is fixed on an upper end surface of the positioning base, and the contact rod and the drive member are both fixed on the mounting base.
In a preferable embodiment, the elastic member is a cylindrical spring, two ends of the elastic member are respectively sleeved outside the guide tube and outside the positioning base, the two ends of the elastic member are respectively supported on a lower surface of the mounting base and an upper surface of a pedestal, and the elastic member is in a compressed state.
In a preferable embodiment, the drive member is cylinder-shaped, an annular connecting body protruding inward in a radial direction of the drive member and integrally formed with the drive LU502594 member is disposed on an upper end of the drive member, the mounting base is coaxially disposed inside the drive member and is fixed to the connecting body, an outer circumferential surface of the drive member is the drive surface, a conical surface smoothly connected to the outer circumferential surface and contracting inward is disposed on a lower end of the outer circumferential surface, the conical surface is the beveled surface, and a lower end surface of the drive member is higher than a lower end surface of a positioning block.
In a preferable embodiment, the contact rod is cylindrical, a disk-shaped connecting plate coaxial with the contact rod is fixed on a lower end of the contact rod, the connecting plate is fixed on an upper surface of the mounting base, and the contact rod and the guide rod are coaxial.
In a preferable embodiment, the contact switch is fixed on a support seat, and the support seat is fixed on the bottom plate.
In a preferable embodiment, a roller is rotatably mounted on a free end of the swing member, a rotation axis of the roller is perpendicular to an axis of the guide rod, and the roller is tangent to a downward extension surface of the beveled surface.
In a preferable embodiment, a plurality of positioning holes are provided on the bottom plate for mounting the bottom plate.
The beneficial effects of the invention are as follows:
The present invention relates to an anti-collision limit device. First, in the present invention, a limit form combining a damper and a mechanical contact switch is used. Compared with a photoelectric switch, this limit form allows for simple circuit control, a low cost, and high stability. Second, the contact switch of the present invention is disposed on a side of the damper. A drive surface of the drive member compresses a swing member of the contact switch, to make the contact switch generate a stable feedback signal. The swing member is in contact with an outer side surface of the drive member through a roller on a front end of the swing member, so that the contact switch is prevented from being crushed by a large impact force or damaged by excessive compression in some emergencies, to ensure safe and stable use and reduce some unnecessary losses. Moreover, throughout a process in which the damper is compressed to move and becomes completely compressed, the drive surface of the drive member remains in a state of compressing the swing member. That is, the contact switch keeps generating a braking signal for a machine hitting the damper, so that the feedback signal is prevented from being interrupted, the loss of control is reduced, effective response can be made to some emergencies, the impact force is reduced, and corresponding machinery and equipment are effectively protected. LU502594
FIG. 1 is a schematic front view of an anti-collision limit device according to the present invention;
FIG. 2 is a status diagram after a contact rod of a damper is hit by an external force F according to the present invention;
FIG. 3 is a top view of FIG. 1; and
FIG. 4 is a diagram separately presenting components in a damper according to the present invention.
Reference numerals: 11. bottom plate; 12. positioning hole; 13. support seat; 14. contact switch; 15. swing member; 16. roller; 17. guide tube; 18. limit plate; 19. guide rod; 20. guide block; 22. positioning base; 23. mounting base; 24. elastic member; 25. drive member; 26. connecting body; 27. drive surface; 28. beveled surface; 29. downward extension surface of the beveled surface; 30. contact rod; and 31. connecting plate.
The present invention is further described below with reference to the accompanying drawings and specific embodiments, to enable a person skilled in the art to better understand and implement the present invention. However, the embodiments are not used to limit the present invention.
FIG. 1 shows an embodiment of an anti-collision limit device according to the present invention.
An anti-collision limit device includes: a contact switch 14, the contact switch 14 is mounted on a bottom plate 11, a plurality of positioning holes 12 are provided on the bottom plate 11 for mounting the bottom plate 11, the contact switch 14 is provided with a swing member 15 used for triggering and making the contact switch generate a contact signal; and a damper including a contact rod 30, where the contact rod 30 is slidably mounted on the bottom plate 11, the contact rod 30 is connected to an elastic member 24 used for damping an impact force on the contact rod 30, the contact rod 30 is further connected to a drive member 25, the drive member 25 is provided with a drive surface 27 parallel to a slide direction of the contact rod 30, an end of the drive surface 27 close to the swing member 15 is provided with a beveled surface 28 smoothly connected to the drive surface 27. Referring to FIG. 2, the beveled surface
28 allows for smooth transition of the swing member 15 of the contact switch 14 to contact the LU502594 drive surface 27, to reduce pauses, so that the drive surface 27 can quickly contact the swing member 15 and generate a feedback signal to reduce a delay, and can effectively protect the drive member 25 and the swing member 15 to reduce wear. After the contact rod 30 is subjected to an impact force from a movement machine, the contact rod 30 drives the drive member 25 to move synchronously, and the drive member 25 compresses the swing member 15 sequentially through the beveled surface 28 and the drive surface 27, to make the contact switch 14 generate a contact signal for braking the machine.
In a specific embodiment of the present invention, the contact rod 30 and the drive member 25 are both fixed on the upper end of a cylindrical guide rod 19, a cylindrical guide block 20 coaxial with the guide rod is fixed on the lower end of the guide rod 19, the guide block 20 is coaxially and slidably mounted in a cylindrical guide tube 17 which matches the guide block, the guide block 20 freely slides in the guide tube 17, the guide tube 17 limits the slide direction of the guide block 20, and the lower end of the guide tube 17 is fixed on the bottom plate 11.
In a specific embodiment of the present invention, an annular limit plate 18 coaxial with the guide tube is fixed on the upper end of the guide tube 17, the inner circle diameter of the limit plate 18 is greater than the diameter of the guide rod 19 and is less than the diameter of the guide block 20, and the guide rod 19 extends upward vertically to pass through a through hole at a center of the limit plate 18. The limit plate 18 limits the guide block 20 in the guide tube 17, to prevent the guide block 20 from falling off the guide tube 17.
In a specific embodiment of the present invention, referring to FIG. 4, a disk-shaped positioning base 22 coaxial with the guide rod is fixed on the upper end of the guide rod 19, the positioning base 22 is used for positioning the elastic member 24, a disk-shaped mounting base 23 coaxial with the positioning base is fixed on the upper end surface of the positioning base 22, and the contact rod 30 and the drive member 25 are both fixed on the mounting base 23. The elastic member 24 is a cylindrical spring, two ends of the elastic member 24 are respectively sleeved outside the guide tube 17 and outside the positioning base 22, the two ends of the elastic member 24 are respectively supported on a lower surface of the mounting base 23 and an upper surface of a pedestal, and the elastic member 24 is in a compressed state. The elastic force of the elastic member 24 allows the guide block 20 to remain in contact with the limit plate 18, so that the structure of the entire damper is more compact and stable.
In a specific embodiment of the present invention, the drive member 25 is cylinder-shaped, an annular connecting body 26 protruding inward in a radial direction of the drive member and integrally formed with the drive member is disposed on the upper end of the drive member 25,
the mounting base 23 is coaxially disposed inside the drive member 25 and is fixed to the LU502594 connecting body 26, an outer circumferential surface of the drive member 25 is the drive surface 27. When the damper operates, the drive surface 27 remains in a state of compressing the swing member 15. That is, the contact switch 14 keeps generating a braking signal for a machine hitting the damper, so that the feedback signal is prevented from being interrupted, the loss of control is reduced, effective response can be made to some emergencies, the impact force is reduced, and corresponding machinery and equipment are effectively protected. A conical surface smoothly connected to the outer circumferential surface and contracting inward is provided on the lower end of the outer circumferential surface, the conical surface is the beveled surface 28, and the lower end surface of the drive member 25 is higher than the lower end surface of a positioning block, so that as the positioning block moves, the drive member is prevented from contacting the bottom plate 11, to avoid damaging the drive member 25.
In a specific embodiment of the present invention, the contact rod 30 is cylindrical, a disk- shaped connecting plate 31 coaxial with the contact rod is fixed on the lower end of the contact rod 30, the connecting plate 31 is fixed on the upper surface of the mounting base, and the contact rod 30 and the guide rod 19 are coaxial.
In a specific embodiment of the present invention, referring to FIG. 3, the contact switch 14 is fixed on a support seat 13, and the support seat 13 is fixed on the bottom plate 11, to facilitate the mounting and commissioning of the contact switch 14, and the mounting stability is high.
In a specific embodiment of the present invention, a roller 16 is rotatably mounted on a free end of the swing member 15, and the rotation axis of the roller 16 is perpendicular to the axis of the guide rod 19. The roller 16 converts sliding friction applied on the swing member 15 into rolling friction to reduce wear, so that the service life of components is increased, and the contact between the swing member 15 and the drive surface 27 or the beveled surface 28 becomes smoother. The roller 16 is tangent to a downward extension surface 29 of the beveled surface 28.
The foregoing embodiments are merely preferred embodiments used to fully describe the present invention, and the protection scope of the present invention is not limited thereto.
Equivalent replacements or variations made by a person skilled in the art to the present invention all fall within the protection scope of the present invention. The protection scope of the present invention is as defined in the claims.
Claims (10)
1. An anti-collision limit device, comprising: a contact switch, the contact switch being mounted on a bottom plate, the contact switch being provided with a swing member used for triggering and making the contact switch generate a contact signal; and a damper, the damper comprising a contact rod, wherein the contact rod is slidably mounted on the bottom plate, the contact rod is connected to an elastic member used for damping an impact force on the contact rod, the contact rod is further connected to a drive member, the drive member is provided with a drive surface parallel to a slide direction of the contact rod, an end of the drive surface close to the swing member is provided with a beveled surface smoothly connected to the drive surface, after the contact rod is subjected to an impact force from a moving machine, the contact rod drives the drive member to move synchronously, and the drive member compresses the swing member sequentially through the beveled surface and the drive surface, to make the contact switch generate a contact signal for braking the machine.
2. The anti-collision limit device according to claim 1, wherein the contact rod and the drive member are both fixed on an upper end of a cylindrical guide rod, a cylindrical guide block coaxial with the guide rod is fixed on a lower end of the guide rod, the guide block is coaxially and slidably mounted in a cylindrical guide tube matching the guide block, and a lower end of the guide tube is fixed on the bottom plate.
3. The anti-collision limit device according to claim 2, wherein an annular limit plate coaxial with the guide tube is fixed on an upper end of the guide tube, an inner circle diameter of the limit plate is greater than a diameter of the guide rod and is less than a diameter of the guide block, and the guide rod extends upward vertically to pass through a through hole at a center of the limit plate.
4. The anti-collision limit device according to claim 2, wherein a disk-shaped positioning base coaxial with the guide rod is fixed on the upper end of the guide rod, a disk-shaped mounting base coaxial with the positioning base is fixed on an upper end surface of the positioning base, and the contact rod and the drive member are both fixed on the mounting base.
5. The anti-collision limit device according to claim 4, wherein the elastic member is a cylindrical spring, two ends of the elastic member are respectively sleeved outside the guide tube and outside the positioning base, the two ends of the elastic member are respectively supported on a lower surface of the mounting base and an upper surface of a pedestal, and the elastic member is in a compressed state. LU502594
6. The anti-collision limit device according to claim 5, wherein the drive member is cylinder- shaped, an annular connecting body protruding inward in a radical direction of the drive member and integrally formed with the drive member is disposed on an upper end of the drive member, the mounting base is coaxially disposed inside the drive member and is fixed to the connecting body, an outer circumferential surface of the drive member is the drive surface, a conical surface smoothly connected to the outer circumferential surface and contracting inward is disposed on a lower end of the outer circumferential surface, the conical surface is the beveled surface, and a lower end surface of the drive member is higher than a lower end surface of a positioning block.
7. The anti-collision limit device according to claim 6, wherein the contact rod is cylindrical, a disk-shaped connecting plate coaxial with the contact rod is fixed on a lower end of the contact rod, the connecting plate is fixed on an upper surface of the mounting base, and the contact rod and the guide rod are coaxial.
8. The anti-collision limit device according to claim 6, wherein the contact switch is fixed on a support seat, and the support seat is fixed on the bottom plate.
9. The anti-collision limit device according to claim 8, wherein a roller is rotatably mounted on a free end of the swing member, a rotation axis of the roller is perpendicular to an axis of the guide rod, and the roller is tangent to a downward extension surface of the beveled surface.
10. The anti-collision limit device according to claim 1, wherein a plurality of positioning holes are provided on the bottom plate for mounting the bottom plate.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110997647.6A CN113816262A (en) | 2021-08-27 | 2021-08-27 | Anti-collision limiting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| LU502594A1 true LU502594A1 (en) | 2023-02-27 |
| LU502594B1 LU502594B1 (en) | 2023-06-08 |
Family
ID=78913698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU502594A LU502594B1 (en) | 2021-08-27 | 2022-01-13 | Anti-collision limit device |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN113816262A (en) |
| LU (1) | LU502594B1 (en) |
| WO (1) | WO2023024420A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113816262A (en) * | 2021-08-27 | 2021-12-21 | 法兰泰克重工股份有限公司 | Anti-collision limiting device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207483192U (en) * | 2017-11-20 | 2018-06-12 | 江苏工力重机有限公司 | Large vehicle walking anticollision feeler lever |
| CN207827712U (en) * | 2017-12-23 | 2018-09-07 | 博睿斯重工股份有限公司 | A kind of anticollision equipment and application its overhead traveling crane and crane multiply beam-and-rail |
| KR102088589B1 (en) * | 2019-01-10 | 2020-03-12 | 부산신항국제터미널 주식회사 | Crane operating method using limit switch |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203159070U (en) * | 2013-03-14 | 2013-08-28 | 中国有色（沈阳）冶金机械有限公司 | Cart stroke limit device of bridge crane |
| KR101459058B1 (en) * | 2013-04-08 | 2014-11-07 | 주식회사 포스코 | Braking device of overhead crane |
| KR20160142930A (en) * | 2015-06-03 | 2016-12-14 | 주식회사 포스코 | Braking device |
| CN204751979U (en) * | 2015-06-19 | 2015-11-11 | 河南宝起华东起重机有限公司 | Bridge crane cart stroke stop device |
| CN204847856U (en) * | 2015-08-29 | 2015-12-09 | 河南真牛起重机有限公司 | Crane end beam buffer stop |
| CN105293291A (en) * | 2015-11-18 | 2016-02-03 | 德马科起重机械有限公司 | Crane trolley walking limiting device and application method |
| CN208071144U (en) * | 2018-04-09 | 2018-11-09 | 法兰泰克重工股份有限公司 | Touching formula anti-collision protection device on crane |
| CN212024582U (en) * | 2020-04-03 | 2020-11-27 | 福建省特种设备检验研究院 | Anti-collision buffer brake device of crane |
| CN211920691U (en) * | 2020-04-15 | 2020-11-13 | 河南省晟源起重机械有限公司 | Bridge crane capable of being safely prevented from collision |
| CN112366099A (en) * | 2020-11-24 | 2021-02-12 | 中铁宝桥集团有限公司 | Turnout stock switch track switching travel limit switch device and working method |
| CN113816262A (en) * | 2021-08-27 | 2021-12-21 | 法兰泰克重工股份有限公司 | Anti-collision limiting device |
-
2021
- 2021-08-27 CN CN202110997647.6A patent/CN113816262A/en active Pending
-
2022
- 2022-01-13 WO PCT/CN2022/071825 patent/WO2023024420A1/en unknown
- 2022-01-13 LU LU502594A patent/LU502594B1/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207483192U (en) * | 2017-11-20 | 2018-06-12 | 江苏工力重机有限公司 | Large vehicle walking anticollision feeler lever |
| CN207827712U (en) * | 2017-12-23 | 2018-09-07 | 博睿斯重工股份有限公司 | A kind of anticollision equipment and application its overhead traveling crane and crane multiply beam-and-rail |
| KR102088589B1 (en) * | 2019-01-10 | 2020-03-12 | 부산신항국제터미널 주식회사 | Crane operating method using limit switch |
Also Published As
| Publication number | Publication date |
|---|---|
| LU502594B1 (en) | 2023-06-08 |
| CN113816262A (en) | 2021-12-21 |
| WO2023024420A1 (en) | 2023-03-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FG | Patent granted |
Effective date: 20230608 |