CN112228761A - Spacing piece and stop device of colliding - Google Patents
Spacing piece and stop device of colliding Download PDFInfo
- Publication number
- CN112228761A CN112228761A CN202011183834.2A CN202011183834A CN112228761A CN 112228761 A CN112228761 A CN 112228761A CN 202011183834 A CN202011183834 A CN 202011183834A CN 112228761 A CN112228761 A CN 112228761A
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- Prior art keywords
- limiting
- base
- spring
- limiting structure
- mandrel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16P—SAFETY DEVICES IN GENERAL; SAFETY DEVICES FOR PRESSES
- F16P7/00—Emergency devices preventing damage to a machine or apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a limiting collision block and a limiting device. This spacing piece of hitting includes: the base is provided with a first connecting hole; the mandrel penetrates through the first connecting hole and can slide in the first connecting hole; the limiting structure is arranged at one end, far away from the first connecting hole, of the mandrel, is at a first preset position, and can be in contact with the limiting collision head to generate an interaction force; the anti-loosening device is arranged on one side of the first connecting hole; the spring penetrates through the mandrel and is in a compressed state, the spring is located between the base and the limiting structure, and the compression force of the spring is greater than the interaction force when the limiting collision head is in contact with the limiting structure. When the limiting switch is used, the base connected with the moving part moves beyond the limit position continuously, the spring is further compressed by the base, the effects of absorbing energy and buffering protection are achieved, the collision strength between the limiting structure and the limiting shell is reduced, the limiting switch is protected, and the service life of the limiting switch is prolonged.
Description
Technical Field
The invention relates to the field of limiting equipment, in particular to a limiting collision block and a limiting device.
Background
At present, due to the requirements on the functionality and safety of electromechanical products, a limiting mechanism is often arranged at a specific position of a mechanism to limit the movement range of a movement mechanism so as to realize a certain function, or the movement mechanism is prevented from deviating from a set movement range so as to ensure the safety of the products or operators.
The limiting mechanism usually adopts a mode that two limiting collision blocks are in contact with a limiting switch, namely, the limiting collision block which is relatively fixed with the fixed part is arranged on the fixed part, the limiting switch which is relatively fixed with the moving part is arranged on the corresponding position on the moving part, when the moving part moves to the set limiting position, the limiting collision block is in contact with the limiting collision head of the limiting switch to trigger the limiting switch, so that the circuit driving the moving part is switched or disconnected, and the limiting between the fixed part and the moving part is realized.
The traditional limiting collision block has no over-travel allowance or has small over-travel allowance, when a device for driving a moving part is a hydraulic cylinder, a hydraulic motor or a motor and the like, the power of the moving part is large, so that the limiting collision block arranged on the moving part is easy to over-travel and collide with a limiting switch, the limiting switch is frequently damaged, the service life of the limiting switch is shortened, and the economic benefit of an enterprise is reduced.
Therefore, how to prolong the service life of the limit switch becomes a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a limit collision block to prolong the service life of a limit switch.
In order to achieve the purpose, the invention provides a limiting collision block which is used for limiting between a moving part and a fixed part, wherein the fixed part is provided with a limiting switch, the limiting switch comprises a limiting collision head and a limiting shell, the limiting collision head is positioned in the limiting shell, and the limiting switch works;
spacing piece of colliding includes:
the base is connected with the moving part and is provided with a first connecting hole;
a spindle extending through the first connection hole and slidable within the first connection hole;
the limiting structure is arranged at one end, far away from the first connecting hole, of the mandrel, is at a first preset position, and can be in contact with the limiting collision head to generate an interaction force;
the anti-loosening device is arranged on one side, away from the limiting structure, of the first connecting hole;
the spring penetrates through the mandrel and is in a compressed state, the spring is positioned between the base and the limiting structure, and the compression force of the spring is greater than the interaction force when the limiting collision head is in contact with the limiting structure.
Preferably, in the above-mentioned limit bump, the anti-loosening device is a first nut mounted on one end of the core shaft away from the limit structure.
Preferably, in the above-mentioned limit collision block, the limit collision block further includes a second nut disposed between the first nut and the base, the second nut is at a second preset position, and the compression force of the spring is greater than the interaction force when the limit collision head contacts with the limit structure.
Preferably, in the limit bump block, the base is made of angle steel, and the first connection hole is formed in a first side wall of the angle steel.
Preferably, in the above-described limit bump, the base and the moving member are connected by a bolt.
Preferably, in the limit bump, the core shaft is made of a screw.
Preferably, in the limit bump, a connection section capable of being connected with the limit structure is arranged at one end of the mandrel, which is connected with the limit structure.
Preferably, in the above-mentioned limit bump, the connecting section is a thin-headed shaft shoulder.
Preferably, in the limit bump, the connection between the mandrel and the limit structure is welded or riveted.
Preferably, in the above-mentioned limit bump, the limit structure is a disk.
When the limiting collision block provided by the invention is used, the base is arranged at a proper position of the moving part, the mandrel is prevented from falling off in the first connecting hole through the anti-loosening device arranged on one side of the first connecting hole, which is far away from the limiting structure, after penetrating through the first connecting hole of the base, when the limiting structure of the limiting collision block moves to a first preset position along with the moving part, the limiting structure is contacted with the limiting collision head, an interaction force is generated between the limiting structure and the limiting collision head, and the compression force of the spring is greater than the interaction force generated when the limiting collision head is contacted with the limiting structure, so that the compression force of the spring can enable the limiting structure to push the limiting collision head into the limiting shell, and the limiting switch works; at this moment, limit structure and limit shell contact, because the dabber can slide in the first connecting hole on the base, therefore, if the base of being connected with the moving part continues the motion, the spring that is located between base and the limit structure will further be compressed by the base, prevent to produce the rigidity collision between base and the limit structure, play the energy absorption, the effect of buffer protection, and then reduced the collision strength between limit structure and the limit shell by a wide margin, limit switch has been protected, limit switch's life has been prolonged, the economic benefits of enterprise has been improved.
In addition, the invention also discloses a limiting device which comprises any one limiting collision block, so that all the technical effects of the limiting collision block are achieved, and the details are not repeated herein.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic perspective assembly structure diagram of a limit collision block according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a base according to an embodiment of the present invention;
fig. 3 is a schematic front structural view of a base according to an embodiment of the present invention;
fig. 4 is a schematic top view of a base according to an embodiment of the present invention;
fig. 5 is a schematic left side structural view of a base according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a mandrel according to an embodiment of the present invention;
FIG. 7 is a schematic side view of a mandrel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a spring according to an embodiment of the present invention;
fig. 9 is a schematic perspective view of a limiting structure according to an embodiment of the present invention;
fig. 10 is a schematic front structural view of a limiting structure according to an embodiment of the present invention;
fig. 11 is a schematic cross-sectional structure view of a limiting structure according to an embodiment of the present invention;
fig. 12 is a schematic view of an assembly structure of a limit bump according to an embodiment of the present invention;
fig. 13 is a schematic front structural view of a limit bump according to an embodiment of the present invention;
fig. 14 is a schematic top view of a limiting bump according to an embodiment of the present invention;
fig. 15 is a schematic side view of a limiting bump according to an embodiment of the present invention.
Wherein, 100 is the base, 101 is first connecting hole, 102 is the second connecting hole, 200 is the dabber, 201 is the linkage segment, 202 is the screw thread section, 203 is the changeover portion, 300 is limit structure, 301 is the mounting hole, 3011 is the chamfer, 400 is locking device, 500 is the spring, 600 is the second nut.
Detailed Description
In view of the above, the core of the present invention is to provide a limit bump to prolong the service life of a limit switch.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
As shown in fig. 1 to 15, the embodiment of the invention discloses a limit bump used for limiting between a moving part and a fixed part, the fixed part is provided with a limit switch, the limit switch comprises a limit bump head and a limit shell, the limit bump head is positioned in the limit shell, and the limit switch works; the limiting collision block comprises a base 100, a mandrel 200, a limiting structure 300, a locking device 400 and a spring 500.
Wherein the base 100 is connected with the moving part, and the base 100 is provided with a first connection hole 101; the mandrel 200 penetrates through the first connecting hole 101, and the mandrel 200 can slide in the first connecting hole 101; the limiting structure 300 is arranged at one end of the mandrel 200 far away from the first connecting hole 101, the limiting structure 300 is at a first preset position, and the limiting structure 300 can be in contact with a limiting collision head and generate an interaction force; the anti-loosening device 400 is arranged on one side of the first connecting hole 101 far away from the limiting structure 300; the spring 500 penetrates the spindle 200 and is in a compressed state, the spring 500 is located between the base 100 and the limiting structure 300, and the compression force of the spring 500 is greater than the interaction force when the limiting collision head contacts with the limiting structure 300.
When the limiting bump provided by the invention is used, the base 100 is installed at a proper position of a moving part, the mandrel 200 is prevented from falling off in the first connecting hole 101 by the anti-loosening device 400 arranged at one side of the first connecting hole 101, which is far away from the limiting structure 300, after penetrating through the first connecting hole 101 of the base 100, when the limiting structure 300 of the limiting bump moves to a first preset position along with the moving part, the limiting structure 300 is contacted with the limiting bump, an interaction force is generated between the limiting structure 300 and the limiting bump, and because the compression force of the spring 500 is greater than the interaction force generated when the limiting bump is contacted with the limiting structure 300, the compression force of the spring 500 can enable the limiting structure 300 to push the limiting bump into the limiting shell, so that the limiting switch works; at this moment, the end face of the limit structure 300 contacts with the limit shell, because the mandrel 200 can slide in the first connection hole 101 on the base 100, therefore, if the base 100 connected with the moving part continues to move, the spring 500 located between the base 100 and the limit structure 300 will be further compressed by the base 100, namely, the further compressed compression amount of the spring 500 is the over-travel allowance of the base 100, the further compression of the spring 500 can prevent the base 100 and the limit structure 300 from generating rigid collision, which plays the roles of absorbing energy and buffering protection, further greatly reduces the collision strength between the limit structure 300 and the limit shell, protects the limit switch, prolongs the service life of the limit switch, and improves the economic benefits of enterprises.
The spring 500 may be a spring with a circular cross section, a spring with a rectangular cross section, a spring with unequal pitches, or the like, as long as the compression force of the spring 500 in a compressed state can make the limit structure 300 push the limit stopper into the limit shell; preferably, as shown in fig. 8, the embodiment of the invention adopts a spring with a circular section, and has simple structure and convenient manufacture.
In addition, the calculation formula for the compression force of the spring 500 is:
F＝kx
wherein F is the compression force of the spring, k is the stiffness coefficient, and x is the compression amount.
From the above formula, the stiffness coefficient and the compression amount of the spring 500 should not be too large, so as to prevent the spring 500 from being too large in the compression force, i.e. the spring 500 is too hard, and when the base 100 continues to move, the spring 500 is not further compressed, or the compression amount of the further compression is too small, i.e. the over-travel allowance of the base 100 is too small, and the spring 500 cannot play the roles of energy absorption and buffer protection.
Further, the length of the spring 500 in the compressed state that can be further compressed is not particularly limited, and the length of the spring 500 in the compressed state that can be further compressed can meet the requirement of the over travel allowance of the base 100, and in practical application, the length of the spring 500 that can be further compressed can be adaptively adjusted according to the actual requirement; preferably, the spring 500 used in the embodiment of the present invention can be further compressed by 20 mm, that is, the over travel margin of the limit bump is 20 mm.
The anti-loosening device 400 provided by the invention can be a sleeve, a baffle ring or a nut and the like which are arranged on the mandrel 200 and are far away from one end of the limiting structure 300, can also be a shaft shoulder which is directly processed on the mandrel 200, and belongs to the protection scope of the invention as long as the structure can prevent the mandrel 200 from falling off in the first connecting hole 101; preferably, the first nut is adopted in the embodiment of the invention, so that the structure is simple and the installation is convenient.
As shown in fig. 12 to 15, the limiting anti-collision block further includes a second nut 600 disposed between the first nut and the base 100, and when the second nut 600 is at the second preset position, the compression force of the spring 500 is greater than the interaction force when the limiting collision head contacts with the limiting structure 300, so that when the limiting structure 300 contacts with the limiting collision head, the compression force of the spring 500 can make the limiting structure 300 push the limiting collision head into the limiting shell, so as to make the limiting switch work.
Further, the base 100 can be made of steel plate, iron plate, or angle steel, and any structure that can meet the use requirement is within the scope of the present invention; preferably, the embodiment of the present invention is made of angle steel, and the first connection hole 101 is provided at a first sidewall of the angle steel to facilitate connection of the mandrel 200.
In addition, the second sidewall of the base 100 is connected to the moving part, and the second sidewall and the moving part may be directly connected, or may be connected by another connecting member, as long as the connection between the base 100 and the moving part can be achieved; preferably, the embodiment of the invention adopts direct connection, so that parts can be saved and the cost is reduced.
Moreover, the base 100 and the moving part may be welded, clamped, or bolted, as long as the base 100 and the moving part can be connected; preferably, the embodiment of the invention adopts bolt connection, has simple structure and is convenient to mount and dismount.
Specifically, as shown in fig. 1 to 5, two second connection holes 102 are formed in the second side wall of the base 100, a third connection hole matched with the second connection hole 102 is formed in a corresponding position of the moving member, and when the base is installed, the second connection hole 102 and the third connection hole are connected through a bolt, so that the bolt connection between the base 100 and the moving member is realized.
As shown in fig. 6 and 7, the mandrel 200 is made of a screw, so that the first nut is matched with the thread on the screw to realize the anti-loosening function of the mandrel 200; the second nut 600 can rotate on the screw to a second preset position, so that the base 100 and the limiting structure 300 compress the spring 500 to a state that the compression force of the spring 500 is greater than the interaction force when the limiting collision head contacts with the limiting structure 300.
Further, the mandrel 200 comprises a connecting section 201, a threaded section 202 and a transition section 203, wherein the connecting section 201 is arranged at one end of the mandrel 200, which is connected with the limiting structure 300, and is used for being connected with the limiting structure 300; the threaded section 202 is arranged at one end of the mandrel, which is connected with the first nut and the second nut 600, so as to be matched with the first nut and the second nut 600 in a screwing way; a transition section 203 is provided between the connection section 201 and the threaded section 202 for connecting the connection section 201 and the threaded section 202.
It should be noted that the transition section 203 may be a threaded rod, a stepped rod, a polished rod, or the like, and any structure capable of connecting the connection section 201 and the threaded section 202 is within the scope of the present invention; preferably, embodiments of the present invention employ a polished rod to facilitate the smooth further compression of spring 500.
And, the length of screw thread section 202 should not be too short, prevents that the length of screw thread section 202 is too short for second nut 600 can't rotate to the second preset position, and unable spring 500's compressive force is greater than the spacing mutual acting force when bumping head and limit structure 300 contact, so that spring 500's compressive force portion can make limit structure 300 bump the head with spacing and bulldoze to the spacing shell in, finally leads to limit switch can't open work, influences the use of equipment.
Meanwhile, the thread major diameter of the threaded section 202 is smaller than the inner diameter of the spring 500, so that the situation that the thread major diameter of the threaded section 202 is too large, when the spring 500 is further compressed, the interference is generated with the thread of the threaded section 202, and the use of the limiting collision block is influenced is prevented.
In addition, the connecting section 201 may be a shaft, a slot, a disc, or the like, and any structure that can be connected with the limiting structure 300 is within the protection scope of the present invention; preferably, embodiments of the present invention employ a thin nose shoulder to facilitate mounting of the thin nose shoulder in the mounting hole 301 described below.
Furthermore, the connection mode of the mandrel 200 and the limiting structure 300 may be welding, riveting or gluing, and the like, and the connection mode of the mandrel 200 and the limiting structure 300 is within the protection scope of the present invention; preferably, the embodiment of the invention adopts welding, and has higher connection strength.
The limit structure 300 provided by the invention can be a sheet, block or disc-shaped structure, and the like, as long as the limit structure 300 can push the limit contact into the limit shell under the compression force of the spring 500, so that the limit switch works; preferably, as shown in fig. 9 to 11, the limiting structure 300 adopted in the embodiment of the present invention is disc-shaped, so that an effective area of the limiting structure 300 capable of contacting with the limiting contact is large, and even when the installation accuracy of the limiting contact block is slightly low, the disc-shaped limiting structure 300 can still contact with the limiting contact head to push the limiting contact head into the limiting shell.
Further, a mounting hole 301 is formed in the center of the disc-shaped limiting structure 300, and is used for being connected with the connecting section 201 of the mandrel 200.
Moreover, one side of the mounting hole 301 close to the mandrel 200 is provided with a chamfer so as to weld the connecting section of the mandrel 200 and the mounting hole 301 into a whole.
In addition, the invention also discloses a limiting device which comprises the limiting collision block, so that all the technical effects of the limiting collision block are achieved, and the details are not repeated herein.
The terms "first" and "second," and the like in the description and claims of the present invention and the above-described drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not set forth for a listed step or element but may include steps or elements not listed.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (11)
1. A limit collision block is used for limiting between a moving part and a fixed part, the fixed part is provided with a limit switch, the limit switch comprises a limit collision head and a limit shell, the limit collision head is positioned in the limit shell, and the limit switch works;
it is characterized in that the preparation method is characterized in that,
spacing piece of colliding includes:
a base (100) connected with the moving part, and the base (100) is provided with a first connection hole (101);
a spindle (200) penetrating the first connection hole (101), and the spindle (200) being slidable within the first connection hole (101);
the limiting structure (300) is arranged at one end, far away from the first connecting hole (101), of the mandrel (200), the limiting structure (300) is arranged at a first preset position, and the limiting structure (300) can be in contact with the limiting collision head and generates an interaction force;
the anti-loosening device (400) is arranged on one side, away from the limiting structure (300), of the first connecting hole (101);
a spring (500) penetrating the mandrel (200) and in a compressed state, wherein the spring (500) is located between the base (100) and the limiting structure (300), and the compression force of the spring (500) is greater than the interaction force when the limiting bump is in contact with the limiting structure (300).
2. The limiting ram according to claim 1, wherein the anti-loosening device (400) is a first nut mounted on an end of the mandrel (200) away from the limiting structure (300).
3. The limiting bump according to claim 2 further comprising a second nut (600) disposed between the first nut and the base (100), wherein the second nut (600) is at a second predetermined position, and the compression force of the spring (500) is greater than the interaction force of the limiting bump and the limiting structure (300).
4. The limiting bump block according to claim 1, wherein the base (100) is made of angle steel, and the first connection hole (101) is formed in a first side wall of the angle steel.
5. The impact limiting block according to claim 1, wherein the base (100) is bolted to the moving member.
6. The limiting ram according to claim 1, wherein the mandrel (200) is made of a threaded rod.
7. The limiting bump according to claim 1, wherein the end of the mandrel (200) connected to the limiting structure (300) is provided with a connecting section (201) capable of being connected to the limiting structure (300).
8. The limiting ram as recited in claim 7, wherein the connecting section (201) is a thin-headed shoulder.
9. The limiting bump according to claim 1 wherein the connection of the mandrel (200) to the limiting structure (300) is by welding or riveting.
10. The impact limiting block according to claim 1, wherein the limiting structure (300) is a disk.
11. A spacing device comprising a spacing bump as claimed in any of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011183834.2A CN112228761A (en) | 2020-10-29 | 2020-10-29 | Spacing piece and stop device of colliding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011183834.2A CN112228761A (en) | 2020-10-29 | 2020-10-29 | Spacing piece and stop device of colliding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112228761A true CN112228761A (en) | 2021-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011183834.2A Pending CN112228761A (en) | 2020-10-29 | 2020-10-29 | Spacing piece and stop device of colliding |
Country Status (1)
| Country | Link |
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| CN (1) | CN112228761A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418128A (en) * | 2021-05-19 | 2021-09-21 | 彩虹（合肥）液晶玻璃有限公司 | Anti-collision device for moving part |
-
2020
- 2020-10-29 CN CN202011183834.2A patent/CN112228761A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418128A (en) * | 2021-05-19 | 2021-09-21 | 彩虹（合肥）液晶玻璃有限公司 | Anti-collision device for moving part |
| CN113418128B (en) * | 2021-05-19 | 2022-08-30 | 彩虹（合肥）液晶玻璃有限公司 | Anti-collision device for moving part |
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