CN219520031U - Safety push rod device - Google Patents
Safety push rod device Download PDFInfo
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- CN219520031U CN219520031U CN202320666680.5U CN202320666680U CN219520031U CN 219520031 U CN219520031 U CN 219520031U CN 202320666680 U CN202320666680 U CN 202320666680U CN 219520031 U CN219520031 U CN 219520031U
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- push rod
- safety
- fixed
- switch
- limit switch
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Abstract
The utility model discloses a safety push rod device, which comprises a push rod, fixed boxes arranged at two sides of the push rod, and a switch linkage pressing sheet and a safety limit switch which are arranged in the fixed boxes, wherein the safety limit switch is fixed in the fixed boxes and is positioned below the switch linkage pressing sheet; the switch linkage pressing piece is fixedly arranged at two ends of the push rod, and one end of the switch linkage pressing piece, which is far away from the safety limit switch, is rotationally connected with the fixed box. The safety push rod device is characterized in that the switch linkage pressing sheet is linked with the push rod and matched with the safety limit switch, when the push rod is pushed back and forth, the switch linkage pressing sheet moves synchronously with the push rod, the concave pressing contact triggers the safety limit switch, and the safety limit switch outputs a signal to the equipment control system to stop equipment, so that workers are prevented from being involved in the equipment, the safety of the workers is protected, and an elastic reset piece is arranged to keep the state of the push rod in a normal state and reset after triggering.
Description
Technical Field
The utility model relates to a safety push rod device, and belongs to the technical field of safety protection devices.
Background
At present, the rolling mill and the open mill realize respective functions at the inlet through a roller way which continuously and circularly rotates, but because the rollers are exposed, when working personnel are working, the risks of being involved exist, therefore, the rolling mill and the open mill are generally provided with corresponding safety protection devices at the rollers, and the safety protection devices commonly used at present are as follows: an emergency pull switch is arranged above the roller, and when an emergency situation occurs or an operator needs to be close to the roller to operate, the operator needs to pull the switch, so that a control device in the open mill/rolling mill cuts off a power supply of a motor for driving the roller; after the emergency is relieved or the operation is completed, the switch is required to be pulled down again, so that the control device resumes the power supply to the roller motor;
however, the safety protection device is complicated in operation, the starting of the device is realized by an operator, a reaction time is needed, real-time protection cannot be realized, and the safety is not high.
It can be seen that, in order to prevent workers from being involved in the equipment, the workers are effectively protected in real time, and a safe push rod device is needed.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, and provides a safety push rod device, wherein a switch linkage pressing sheet is linked with a push rod and is matched with a safety limit switch, when the push rod is pushed back and forth, the switch linkage pressing sheet moves synchronously with the push rod, a concave extrusion contact triggers the safety limit switch, and the safety limit switch outputs a signal to an equipment control system along with the contact, so that equipment is stopped, workers are prevented from being involved in the equipment, safety of the workers is protected, and an elastic reset piece is arranged to keep the state of the push rod in a normal state and reset after triggering.
In order to achieve the above purpose/solve the above technical problems, the present utility model is realized by adopting the following technical scheme: a safety push rod device, which comprises a push rod, fixed boxes arranged at two sides of the push rod, and a switch linkage pressing sheet and a safety limit switch which are arranged in the fixed boxes,
the safety limit switch is fixed in the fixed box and is positioned below the switch linkage pressing sheet;
the switch linkage pressing piece is fixedly arranged at two ends of the push rod, one end of the switch linkage pressing piece, which is far away from the safety limit switch, is rotationally connected with the fixed box, one end of the switch linkage pressing piece, which is close to the safety limit switch, is provided with an inward recess, a contact of the safety limit switch is positioned in the recess, and when the push rod is pushed, the side wall of the recess extrudes the contact to trigger the safety limit switch;
elastic resetting pieces are arranged on two sides of the inner part of the fixed box of the push rod and used for keeping the state of the push rod in a normal state and resetting after triggering.
Further, the safety limit switch also comprises a fixing shaft, one end of the fixing shaft is fixed with one end of the switch linkage pressing piece far away from the safety limit switch, and the other end of the fixing shaft is rotationally connected with the inner wall of the fixing box.
Further, the elastic reset piece comprises a thrust spring, one end of the thrust spring is fixed with the push rod, and the other end of the thrust spring is fixed with the inner wall of the fixed box.
Further, the device also comprises a connecting column and an adjusting bolt, wherein one end of the connecting column is fixed with the thrust spring, and the other end of the connecting column is fixed with the push rod;
the adjusting bolt is in threaded connection with the side wall of the fixed box, one end of the adjusting bolt, which is close to the thrust spring, is rotatably provided with a connecting block, and the other end of the connecting block is fixed with the thrust spring.
Further, the device further comprises a limit sleeve, wherein the limit sleeve is sleeved on the outer side of the thrust spring, one end of the limit sleeve is fixed with the inner wall of the fixed box, and the other end of the limit sleeve is sleeved with the connecting column.
Further, a protection plate is arranged on one side, facing the push rod, of the fixing box, and a groove body for the protection plate to transversely move is formed in the corresponding position of the protection plate and the push rod.
Further, one end of the contact, which is close to the recess, is provided with a round corner.
Compared with the prior art, the utility model has the beneficial effects that:
according to the safety push rod device provided by the utility model, the switch linkage pressing sheet is linked with the push rod and is matched with the safety limit switch, when the push rod is pushed back and forth, the switch linkage pressing sheet moves synchronously with the push rod, the concave extrusion contact points trigger the safety limit switch, the safety limit switch outputs signals to the equipment control system to stop equipment, so that workers are prevented from being involved in the equipment, the safety of the workers is protected, and the elastic reset piece is arranged to keep the normal state of the push rod and reset after triggering;
according to the safety push rod device, the tightness degree of the thrust spring can be adjusted by arranging the connecting column and the adjusting bolt, so that the thrust of the thrust spring to the push rod can be adjusted;
according to the safety push rod device, the protection plate is arranged, so that the protection of the inner structure of the fixed box is realized, and the safety push rod device is easy to observe.
Drawings
FIG. 1 is a schematic view of a safety push rod device according to a first embodiment;
FIG. 2 is a schematic view of the safety push rod device of FIG. 1 after installation of a protective plate;
fig. 3 is a schematic view of the thrust bolt in the limit sleeve of fig. 1.
In the figure: 1. a push rod; 2. a fixed box; 3. switch linkage tabletting; 4. a safety limit switch; 5. a recess; 6. a contact; 7. a fixed shaft; 8. a thrust spring; 9. a connecting column; 10. an adjusting bolt; 11. a connecting block; 12. a limit sleeve; 13. and (5) protecting the plate.
Detailed Description
The utility model is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present utility model, and are not intended to limit the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.
Embodiment one:
as shown in fig. 1, the present embodiment provides a safety push rod device, which comprises a push rod 1, a fixed box 2 arranged at two sides of the push rod 1, and a switch linkage pressing sheet 3 and a safety limit switch 4 arranged in the fixed box 2, wherein,
the safety limit switch 4 is fixed in the fixed box 2 and is positioned below the switch linkage pressing sheet 3;
the switch linkage pressing piece 3 is fixedly arranged at two ends of the push rod 1, one end of the switch linkage pressing piece, which is far away from the safety limit switch 4, is rotationally connected with the fixed box 2, one end of the switch linkage pressing piece, which is close to the safety limit switch 4, is provided with an inward concave 5, a contact 6 of the safety limit switch 4 is positioned in the concave 5, and when the push rod 1 is pushed, the side wall of the concave 5 presses the contact 6 to trigger the safety limit switch 4;
elastic resetting pieces are arranged on two sides of the inner part of the fixed box 2 of the push rod 1 and used for keeping the state of the push rod 1 in a normal state and resetting after triggering.
In the above technical scheme, the fixed box 2 is a box body with a cavity opened towards one side of the push rod 1, and the safety limit switch 4 is fixed with the fixed box through bolts.
The safety push rod device can be arranged in front of the inlet of a roller way of a rolling mill, an open mill and the like, wherein the safety limit switch 4 is in signal connection with the equipment control system;
when the push rod 1 is pushed back and forth, the switch linkage pressing sheet 3 moves synchronously along with the push rod 1, the concave 5 extrudes the contact 6 to trigger the safety limit switch 4, and the safety limit switch 4 outputs a signal to the equipment control system to stop equipment, so that workers are prevented from being involved in the equipment, and the safety of the workers is protected.
In some embodiments, to realize the rotary connection between the switch linkage pressing piece 3 and the fixed box 2, the device further comprises a fixed shaft 7, wherein one end of the fixed shaft 7 is fixed with one end of the switch linkage pressing piece 3 far away from the safety limit switch 4, and the other end is rotationally connected with the inner wall of the fixed box 2.
In some embodiments, to achieve the normal state of the push rod 1 and the reset after the triggering, the elastic reset piece includes a thrust spring 8, where one end of the thrust spring 8 is fixed to the push rod 1, and the other end is fixed to the inner wall of the fixed box 2.
In some embodiments, as shown in fig. 3, to adjust the tightness of the thrust spring 8, so as to adjust the thrust of the thrust spring 8 on the push rod 1, a connecting column 9 and an adjusting bolt 10 are further included, wherein one end of the connecting column 9 is fixed with the thrust spring 8, and the other end is fixed with the push rod 1;
the adjusting bolt 10 is in threaded connection with the side wall of the fixed box 2, one end of the adjusting bolt, which is close to the thrust spring 8, is rotatably provided with a connecting block 11, and the other end of the connecting block 11 is fixed with the thrust spring 8; when the tightness degree of the thrust spring 8 is adjusted, the adjusting bolt 10 is rotated to enable the adjusting bolt 10 to displace, so that the connecting block 11 is driven to move towards or away from the direction of the thrust spring 8 to adjust the tightness degree, but attention is paid to the fact that the tightness adjustment degree of the thrust springs 8 at two sides of one end of the push rod 1 is consistent, and the problem that the dislocation of the push rod 1 cannot be kept in a normal state due to inconsistent tightness is solved.
In some embodiments, to realize the limit of the thrust spring 8, the device further includes a limit sleeve 12, where the limit sleeve 12 is sleeved on the outer side of the thrust spring 8, and one end of the limit sleeve is fixed with the inner wall of the fixed box 2, and the other end of the limit sleeve is sleeved with the connecting post 9.
In some embodiments, as shown in fig. 2, in order to realize protection of the internal structure of the fixed box 2, a protection plate 13 is disposed on a side of the fixed box 2 facing the push rod 1, the protection plate 13 is fixed with the fixed box 2, and a groove for the lateral movement of the protection plate 13 is formed at a position corresponding to the push rod 1.
In some embodiments, the end of the contact 6 near the recess 5 is rounded for easy triggering of the contact 6.
In summary, in the safety push rod device provided in this embodiment, by linking the switch linkage pressing sheet 3 with the push rod 1 and matching with the safety limit switch 4, when the push rod 1 is pushed forward and backward, the switch linkage pressing sheet 3 moves synchronously with the push rod 1, the recess 5 extrudes the contact 6 to trigger the safety limit switch 4, and the safety limit switch 4 outputs a signal to the equipment control system to stop the equipment, thereby preventing the personnel from being involved in the equipment, protecting the personnel safety, and setting the elastic reset member to realize the maintenance of the state of the push rod 1 in normal state and the reset after the triggering; the tightness degree of the thrust spring 8 can be adjusted by arranging the connecting column 9 and the adjusting bolt so as to realize the adjustment of the thrust spring 8 on the push rod 1; by arranging the protection plate 13, the protection of the inner structure of the fixed box 2 is realized, and the observation is easy.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and variations could be made by those skilled in the art without departing from the technical principles of the present utility model, and such modifications and variations should also be regarded as being within the scope of the utility model.
Claims (7)
1. The safety push rod device is characterized by comprising a push rod (1), fixed boxes (2) arranged at two sides of the push rod (1), and a switch linkage pressing sheet (3) and a safety limit switch (4) which are arranged in the fixed boxes (2),
the safety limit switch (4) is fixed in the fixed box (2) and is positioned below the switch linkage pressing sheet (3);
the switch linkage pressing piece (3) is fixedly arranged at two ends of the push rod (1), one end of the switch linkage pressing piece, which is far away from the safety limit switch (4), is rotationally connected with the fixed box (2), an inward concave (5) is arranged at one end of the switch linkage pressing piece, which is close to the safety limit switch (4), and a contact (6) of the safety limit switch (4) is positioned in the concave (5), and when the push rod (1) is pushed, the contact (6) is extruded by the side wall of the concave (5) to trigger the safety limit switch (4);
elastic resetting pieces are arranged on two sides of the inner part of the fixed box (2) of the push rod (1) and used for keeping the state of the push rod (1) in a normal state and resetting after triggering.
2. The safety push rod device according to claim 1, further comprising a fixed shaft (7), wherein one end of the fixed shaft (7) is fixed with one end of the switch linkage pressing piece (3) far away from the safety limit switch (4), and the other end is rotatably connected with the inner wall of the fixed box (2).
3. The safety push rod device according to claim 1, wherein the elastic restoring member comprises a thrust spring (8), one end of the thrust spring (8) is fixed with the push rod (1), and the other end is fixed with the inner wall of the fixed box (2).
4. A safety push rod device according to claim 3, further comprising a connecting post (9) and an adjusting bolt (10), wherein one end of the connecting post (9) is fixed with the thrust spring (8) and the other end is fixed with the push rod (1);
the adjusting bolt (10) is in threaded connection with the side wall of the fixed box (2), one end, close to the thrust spring (8), of the adjusting bolt is rotatably provided with a connecting block (11), and the other end of the connecting block (11) is fixed with the thrust spring (8).
5. The safety push rod device according to claim 4, further comprising a limit sleeve (12), wherein the limit sleeve (12) is sleeved on the outer side of the thrust spring (8), one end of the limit sleeve is fixed with the inner wall of the fixed box (2), and the other end of the limit sleeve is sleeved with the connecting column (9).
6. The safety push rod device according to claim 1, wherein a protection plate (13) is arranged on one side of the fixed box (2) facing the push rod (1), and a groove body for the lateral movement of the protection plate (13) is arranged at a position corresponding to the push rod (1).
7. A safety push rod device according to claim 1, characterized in that the end of the contact (6) near the recess (5) is rounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320666680.5U CN219520031U (en) | 2023-03-30 | 2023-03-30 | Safety push rod device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320666680.5U CN219520031U (en) | 2023-03-30 | 2023-03-30 | Safety push rod device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219520031U true CN219520031U (en) | 2023-08-15 |
Family
ID=87586923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320666680.5U Active CN219520031U (en) | 2023-03-30 | 2023-03-30 | Safety push rod device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219520031U (en) |
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2023
- 2023-03-30 CN CN202320666680.5U patent/CN219520031U/en active Active
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