Interlocking device for limiting protection of supporting plate for wire collection

Abstract

The utility model discloses an interlocking device for limiting protection of a supporting plate for wire collection, which comprises a travel cam mounted on a supporting plate mechanism, and the supporting plate mechanism moves up and down in an interlayer of a collecting drum. A zero-position travel switch, a first-position travel switch, a second-position travel switch and a third-position travel switch are sequentially distributed on the supporting plate mechanism from bottom to top along the moving track. The supporting plate mechanism moves slowly, quickly and slowly in the lifting process through positioning, the supporting plate mechanism can be stably stopped at the stop position while the moving efficiency of the supporting plate mechanism is guaranteed, the stability and safety of the supporting plate mechanism are improved, the limit position protection mechanism deals with the over-limit condition of the supporting plate mechanism, and the safety of the supporting plate mechanism is improved. After the supporting plate mechanism is sensed to enter the over-limit area, a normally-closed point signal of the limit position travel switch is switched off and immediately sent to an emergency stop of the controller, an emergency braking mode is adopted for stopping, and the safety of the supporting plate mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of limit position protection of a support plate, in particular to an interlocking device for limit position protection of a support plate for wire collection. Background Art

[0002] The equipment in the coiling area of ​​the wire workshop consists of a coiling drum, nose cone, pusher claws, a pallet, and a double core rod. The pallet is responsible for transporting the wire coil from top to bottom. In order to ensure the flatness of the coil, the pallet is raised as close to the bottom of the coiling drum as possible.

[0003] At present, the control mode of each workshop in the rod and wire factory is to measure the height by the encoder and give a stop command; there is no highest position protection, which leads to certain special conditions, such as inaccurate encoder displacement. The single encoder cannot reliably play the high-position stop protection, and the pallet is directly raised to the bottom of the reel collecting device. The two collide and damage the mechanical parts of the pallet, and even the chain breaks. The pallet falls directly from a high place to the bottom, smashing the buffer, hydraulic cylinder and other equipment, causing serious malfunctions.

[0004] Therefore, the utility model is to develop an interlocking device for protecting the limit position of a wire collecting support plate in order to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an interlocking device for protecting the limit position of a wire collecting support plate in view of the deficiencies of the above-mentioned prior art, so as to solve the potential safety hazards that may occur in the support plate mechanism.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0007] An interlocking device for protecting the limit position of a wire collecting support plate comprises a travel cam installed on a support plate mechanism, the support plate mechanism moves up and down in the middle of the interlayer with a collection reel, and the support plate mechanism is provided with a 0-position travel switch, a 1-position travel switch, a 2-position travel switch and a 3-position travel switch in sequence from bottom to top along the moving track, which respectively correspond to the 0-position original position, the 1-position speed regulating position, the 2-position speed regulating position and the 3-position stop position in the lifting process of the support plate mechanism;

[0008] The 0-bit original position and the 3-bit stop position correspond to the upper and lower stop positions of the pallet mechanism. The area between the 0-bit original position and the 1-bit speed adjustment position and between the 2-bit speed adjustment position and the 3-bit stop position is the slow-motion area of ​​the pallet mechanism. The area between the 1-bit speed adjustment position and the 2-bit speed adjustment position is the fast-motion area of ​​the pallet mechanism. The area above the 3-bit stop position is the over-limit area.

[0009] The interlocking device further includes a controller, and an extreme position protection mechanism is installed in the over-limit area. The extreme position protection mechanism includes a contact bottom plate, a movable ejector rod, and an extreme position travel switch. The contact bottom plate is installed at the bottom end of the movable ejector rod. The movable ejector rod cooperates with the extreme position travel switch. The 0-position travel switch, the 1-position travel switch, the 2-position travel switch, the 3-position travel switch, and the extreme position travel switch are all electrically connected to the controller. A speed adjustment switch and a start-stop switch are provided on the control circuit of the pallet mechanism to adjust the lifting speed and start-stop of the pallet mechanism respectively. The speed adjustment switch and the start-stop switch are connected in series;

[0010] The extreme position travel switch uses a normally closed point signal. When the pallet mechanism enters the over-limit area and touches the movable ejector rod, the normally closed point signal is disconnected, and an emergency stop signal is immediately sent to the controller, and an emergency braking mode is adopted to stop.

[0011] Preferably, a buffer layer is provided at the bottom of the contact bottom plate, and the buffer layer is made of rubber material.

[0012] Preferably, a protruding top block is provided at the top end of the movable ejector rod, and the protruding top block matches the trigger point of the extreme position travel switch.

[0013] Preferably, a hollow tube is provided outside the movable ejector rod for vertical guiding of the movable ejector rod, and the hollow tube is fixed to the external structure.

[0014] Preferably, a falling prevention pin shaft is installed outside the movable ejector rod. The length of the falling prevention pin shaft is greater than the inner diameter of the hollow tube, so that when the movable ejector rod does not move, it is not affected by the gravity of the contact bottom plate and does not fall down.

[0015] Preferably, a limit sleeve is slidably sleeved outside the movable ejector rod. Ear plates are provided on both sides of the limit sleeve, and insertion holes are opened on the surface of the ear plates. The falling prevention pin shaft is movably connected inside the insertion holes.

[0016] Preferably, a threaded hole penetrates through the surface of the limit sleeve, and a bolt is threadedly connected in the threaded hole. The end of the bolt abuts against the movable ejector rod through the threaded hole to position it.

[0017] Preferably, a spring is sleeved outside the movable ejector rod, and the spring is located between the limit sleeve and the protruding top block.

[0018] Preferably, a U-shaped seat is fixedly connected to the center position of the top end of the contact bottom plate. First pin holes are opened in both the U-shaped seat and the bottom end of the movable ejector rod, and a torsion pin rod is inserted into the plurality of first pin holes. The contact bottom plate rotates around the torsion pin rod at the bottom end of the movable ejector rod. A torsion spring is sleeved outside the torsion pin rod, and both ends of the torsion spring are fixedly connected to the U-shaped seat and the top wall of the contact bottom plate respectively.

[0019] Preferably, the C-shaped seat and the movable ejector rod are both provided with second pin holes directly above the first pin hole, and a limit pin rod is inserted into the plurality of second pin holes together.

[0020] The utility model has the following beneficial effects:

[0021] Through the cooperation of the 0-position travel switch, the 1-position travel switch, the 2-position travel switch and the 3-position travel switch with the travel cam, the pallet mechanism is positioned and its lifting speed is controlled, so that the pallet mechanism moves slowly, fast and slowly during the lifting process, ensuring the moving efficiency of the pallet mechanism and being able to stop stably at its stop position, improving the stability and safety of the pallet mechanism. In addition, through the extreme position protection mechanism to handle the overrun situation of the pallet mechanism, after sensing that the pallet mechanism enters the overrun area, the normally closed point signal of the extreme position travel switch is disconnected, and an emergency stop signal is immediately sent to the controller to take an emergency braking mode to stop, improving the safety of the pallet mechanism, and the extreme position protection mechanism has a self-protection structure and will not drop and damage the pallet mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure provided by the utility model;

[0023] Figure 2 is a perspective view of the movable ejector rod and its connection structure provided by the utility model;

[0024] Figure 3 is a demonstration diagram of the rising process of the pallet mechanism provided by the utility model;

[0025] Figure 4 is a demonstration diagram of the descending process of the pallet mechanism provided by the utility model;

[0026] Figure 5 is a system control flow chart provided by the utility model.

[0027] Among them:

[0028] Travel cam - 1; Pallet mechanism - 2; 0-position travel switch - 3; 1-position travel switch - 4; 2-position travel switch - 5; 3-position travel switch - 6; Controller - 7; Extreme position protection mechanism - 8;

[0029] Contact bottom plate - 81; Movable ejector rod - 82; Extreme position travel switch - 83; Buffer layer - 84;凸出顶块 - 85; Hollow tube - 86; Anti-falling pin shaft - 87; Limit sleeve - 88; Ear plate - 89; Bolt - 810; Spring - 811; C-shaped seat - 812; Torsion pin rod - 813; Torsion spring - 814; Limit pin rod - 815. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.

[0031] In the description of the present invention, it should be understood that the terms "left side", "right side", "upper part", "lower part", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. "First", "second", etc. do not indicate the importance of the components, and therefore cannot be understood as a limitation on the present invention. The specific dimensions used in this embodiment are only for illustrating the technical solution, and do not limit the scope of protection of the present invention.

[0032] like Figure 1-5 As shown, an interlocking device for protecting the limit position of a wire collecting support plate comprises a travel cam 1, which is installed on a support plate mechanism 2. The support plate mechanism 2 moves up and down in the middle of the interlayer with the collecting reel. The support plate mechanism 2 is provided with a 0-position travel switch 3, a 1-position travel switch 4, a 2-position travel switch 5 and a 3-position travel switch 6 in sequence from bottom to top along the moving track, which respectively correspond to the 0-position original position, the 1-position speed regulating position, the 2-position speed regulating position and the 3-position stop position of the support plate mechanism 2 during the lifting process;

[0033] The 0-bit original position and the 3-bit stop position correspond to the upper and lower stop positions of the pallet mechanism 2. The area between the 0-bit original position and the 1-bit speed regulating position and between the 2-bit speed regulating position and the 3-bit stop position is the slow-moving area of ​​the pallet mechanism 2. The area between the 1-bit speed regulating position and the 2-bit speed regulating position is the fast-moving area of ​​the pallet mechanism 2. The area above the 3-bit stop position is the over-limit area.

[0034] The interlocking device also includes a controller 7, and a limit position protection mechanism 8 is installed in the over-limit area. The limit position protection mechanism 8 includes a contact bottom plate 81, a movable top rod 82 and a limit position travel switch 83. The contact bottom plate 81 is installed at the bottom end of the movable top rod 82, and the movable top rod 82 cooperates with the limit position travel switch 83. The 0-position travel switch 3, the 1-position travel switch 4, the 2-position travel switch 5 and the 3-position travel switch 6 and the limit position travel switch 83 are all electrically connected to the controller 7. The control circuit of the support plate mechanism 2 is provided with a speed adjustment switch and a start-stop switch, which respectively adjust the support plate. The lifting speed and start and stop of the plate mechanism 2, the speed regulating switch and the start and stop switch are arranged in series, the input end and the output end of the controller 7 are respectively provided with an A / D converter and a D / A converter, the triggering signals of the 0-position travel switch 3, the 1-position travel switch 4, the 2-position travel switch 5 and the 3-position travel switch 6 and the limit position travel switch 83 are all transmitted to the controller 7 after passing through the A / D converter, and after being processed by the controller 7, the working current of the plate support mechanism 2 is controlled through the speed regulating switch, so that it can adjust the lifting speed, and stop by adjusting the start and stop switch when reaching the stop position;

[0035] The limit position travel switch 83 adopts a normally closed point signal. When the support plate mechanism 2 enters the over-limit area and hits the movable push rod 82, the normally closed point signal is disconnected, and the emergency stop signal of the controller 7 is immediately sent to stop in the emergency braking mode;

[0036] In addition to the above features, the Hall current sensor is further used to monitor the working current of the pallet mechanism 2 during its movement, and the timer is used to perform timing. The program segment judgment is added. If the current does not drop for 6 seconds after it stabilizes, or if it drops and then suddenly rises, the rising command output is blocked to protect the pallet mechanism 2.

[0037] The 0-position travel switch 3 serves as the original position of the support plate mechanism 2 at a low position. During the rising process, the support plate mechanism 2 first rises slowly from the original position, and then quickly rises when it reaches the 1-position travel switch 4 as the rising lifting position, and then enters a slow inching motion when it reaches the 2-position travel switch 5 rising slow speed position. After a short distance of inching motion, it reaches the 3-position travel switch 6 normal top stop position, and the support plate mechanism 2 stops rising. The two sections of low-speed rising prevent the support plate mechanism 2 from damaging the equipment and rushing out of the normal top position due to excessive speed during starting and stopping; the support plate mechanism 2 descends in the opposite way; an interlock is added, if after the second slow speed, there is a sudden fast speed again, the program blocks the rising command; or after a slow speed, the fast speed does not stop and does not switch to the second slow speed. After a 6-second delay, the rising is blocked. The entire fast rising action time has been considered in advance and is determined to be no more than 6 seconds; the program is encapsulated and called as a subroutine block, in which the delay part can be randomly modified to facilitate the time mismatch caused by the acceleration of the support plate mechanism 2 in the future.

[0038] In order to improve the safety of the support mechanism 2 and reduce the collision damage between the support mechanism 2 and the contact bottom plate 81, a buffer layer 84 is provided at the bottom of the contact bottom plate 81. The buffer layer 84 is made of rubber material and has a certain elastic buffering effect, thereby extending the service life of the device.

[0039] Furthermore, a protruding top block 85 is provided at the top end of the movable top rod 82 , and the protruding top block 85 matches the trigger point of the limit position travel switch 83 .

[0040] In order to improve the movement stability of the movable push rod 82, a hollow tube 86 is provided on the outer side thereof for vertically guiding the movable push rod 82, and the hollow tube 86 is fixed on the external structure.

[0041] Specifically, an anti-fall pin shaft 87 is installed on the outer side of the movable top rod 82. The length of the anti-fall pin shaft 87 is greater than the inner diameter of the hollow tube 86, so that when the movable top rod 82 is not in motion, it will not fall down due to the gravity of the contact bottom plate 81, while maintaining the shortest action distance with the limit, so that the limit can quickly transmit the signal at the moment of action.

[0042] As a preferred embodiment, in order to facilitate the installation of the anti-falling pin shaft 87 and improve the structural strength of the movable ejector rod 82, a limit sleeve 88 is slidably sleeved outside the movable ejector rod 82. Ear plates 89 are provided on both sides of the limit sleeve 88, and insertion holes are formed on the surfaces of the ear plates 89. The anti-falling pin shaft 87 is movably connected inside the insertion holes.

[0043] Furthermore, threaded holes penetrate through the surface of the limit sleeve 88, and bolts 810 are threadedly connected inside the threaded holes. The end of the bolt 810 abuts against the movable ejector rod 82 through the threaded hole to position it, so that the installation position of the limit sleeve 88 can be set according to actual needs.

[0044] Furthermore, a spring 811 is sleeved outside the movable ejector rod 82, and the spring 811 is located between the limit sleeve 88 and the protruding top block 85. When the bolt 810 is loose, the spring 811 has a certain supporting property, thereby preventing the limit sleeve 88 from colliding with the protruding top block 85, and the function of the anti-falling pin shaft 87 can still be realized.

[0045] As a preferred embodiment, in order to enable the pallet mechanism 2 to better contact and fit with the contact bottom plate 81 during the lifting process, a U-shaped seat 812 is fixedly connected to the center position of the top end of the contact bottom plate 81. First pin holes are formed in both the U-shaped seat 812 and the bottom end of the movable ejector rod 82, and a torsion pin rod 813 is inserted into a plurality of the first pin holes together. The contact bottom plate 81 rotates around the torsion pin rod 813 at the bottom end of the movable ejector rod 82. A torsion spring 814 is sleeved outside the torsion pin rod 813, and both ends of the torsion spring 814 are fixedly connected to the U-shaped seat 812 and the top wall of the contact bottom plate 81 respectively. The initial state of the contact bottom plate 81 is kept perpendicular to the movable ejector rod 82 through the torsion spring 814. Even if the pallet mechanism 2 is tilted, the movable ejector rod 82 can still be stably lifted.

[0046] Furthermore, second pin holes are formed in the U-shaped seat 812 and the movable ejector rod 82 directly above the first pin holes, and a limit pin rod 815 is inserted into a plurality of the second pin holes together. The limit pin rod 815 is used in cooperation with the torsion pin rod 813 to fix the installation angle of the contact bottom plate 81.

[0047] When the device is in use, through the cooperation of the 0-position travel switch 3, the 1-position travel switch 4, the 2-position travel switch 5 and the 3-position travel switch 6 with the travel cam 1, the pallet mechanism 2 is positioned and its lifting speed is controlled, so that the pallet mechanism 2 moves slowly, fast and then slowly during the lifting process, ensuring the moving efficiency of the pallet mechanism 2 and being able to stop stably at its stop position, improving the stability and safety of the pallet mechanism 2. In addition, the extreme position protection mechanism 8 processes the overrun situation of the pallet mechanism 2. After sensing that the pallet mechanism 2 enters the overrun area, the normally closed point signal of the extreme position travel switch 83 is disconnected, and an emergency stop signal is immediately sent to the controller 7 to adopt an emergency braking mode to stop, improving the safety of the pallet mechanism 2.

[0048] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. An interlocking device for protecting a wire collecting support plate from a limit position, comprising a travel cam (1) mounted on a support plate mechanism (2), the support plate mechanism (2) moving up and down between the support plate mechanism and the collection drum, characterized in that: The support plate mechanism (2) is provided with a 0-position travel switch (3), a 1-position travel switch (4), a 2-position travel switch (5) and a 3-position travel switch (6) in sequence from bottom to top along the moving track, which respectively correspond to the 0-position original position, the 1-position speed regulating position, the 2-position speed regulating position and the 3-position stop position in the lifting process of the support plate mechanism (2); The 0-position original position and the 3-position stop position correspond to the upper and lower stop positions of the pallet mechanism (2); the area between the 0-position original position and the 1-position speed regulating position and between the 2-position speed regulating position and the 3-position stop position is the slow-moving area of ​​the pallet mechanism (2); the area between the 1-position speed regulating position and the 2-position speed regulating position is the fast-moving area of ​​the pallet mechanism (2); and the area above the 3-position stop position is the over-limit area; The interlocking device also includes a controller (7). A limit position protection mechanism (8) is installed in the over-limit area. The limit position protection mechanism (8) includes a contact base plate (81), a movable top rod (82) and a limit position travel switch (83). The contact base plate (81) is installed at the bottom end of the movable top rod (82). The movable top rod (82) cooperates with the limit position travel switch (83). The 0-position travel switch (3), the 1-position travel switch (4), the 2-position travel switch (5) and the 3-position travel switch (6) as well as the limit position travel switch (83) are all electrically connected to the controller (7). A speed regulating switch and a start-stop switch are provided on the control circuit of the support plate mechanism (2) to respectively regulate the lifting speed and start-stop of the support plate mechanism (2). The speed regulating switch and the start-stop switch are arranged in series. The limit position travel switch (83) uses a normally closed point signal. When the support plate mechanism (2) enters the over-limit area and hits the movable push rod (82), the normally closed point signal is disconnected, and an emergency stop signal is immediately sent to the controller (7), and the emergency brake mode is adopted to stop.

2. The interlocking device for protecting the wire collection plate from limit position according to claim 1, characterized in that: A buffer layer (84) is provided at the bottom of the contact bottom plate (81), and the buffer layer (84) is made of rubber material.

3. The interlocking device for protecting the wire collection plate from limit position according to claim 1, characterized in that: A protruding top block (85) is provided at the top end of the movable top rod (82), and the protruding top block (85) matches the trigger point of the limit position travel switch (83).

4. The interlocking device for protecting the wire collecting plate from limit position according to claim 3, characterized in that: A hollow tube (86) is provided on the outside of the movable top rod (82) for vertically guiding the movable top rod (82), and the hollow tube (86) is fixed to the external structure.

5. The interlocking device for protecting the limit position of the wire collecting support plate according to claim 4, characterized in that: An anti-drop pin shaft (87) is installed on the outer side of the movable push rod (82), and the length of the anti-drop pin shaft (87) is greater than the inner diameter of the hollow tube (86), so that when the movable push rod (82) is not in motion, it will not fall down due to the influence of gravity of the contact bottom plate (81).

6. The interlocking device for protecting the wire collecting tray from limit position according to claim 5, characterized in that: The outer side of the movable push rod (82) is slidably sleeved with a limit sleeve (88), and both sides of the limit sleeve (88) are provided with ear plates (89), and the surface of the ear plates (89) is provided with a plug hole, and the anti-drop pin shaft (87) is movably connected to the inside of the plug hole.

7. An interlocking device for protecting the limit position of a wire collecting support plate according to claim 6, characterized in that: A threaded hole is passed through the surface of the limiting sleeve (88), and a bolt (810) is threadedly connected in the threaded hole. The end of the bolt (810) passes through the threaded hole and abuts against the movable push rod (82) to position it.

8. An interlocking device for protecting the limit position of a wire collecting support plate according to claim 7, characterized in that: A spring (811) is sleeved on the outer side of the movable ejector rod (82), and the spring (811) is located between the limiting sleeve (88) and the protruding ejector block (85).

9. The interlocking device for protecting the wire collection plate from limit position according to claim 1, characterized in that: A U-shaped seat (812) is fixedly connected to the center position at the top end of the contact bottom plate (81). First pin holes are formed in both the U-shaped seat (812) and the bottom end of the movable ejector rod (82), and a torsion pin rod (813) is inserted into the plurality of first pin holes. The contact bottom plate (81) rotates around the torsion pin rod (813) at the bottom end of the movable ejector rod (82). A torsion spring (814) is sleeved outside the torsion pin rod (813), and both ends of the torsion spring (814) are fixedly connected to the U-shaped seat (812) and the top wall of the contact bottom plate (81) respectively.

10. An interlocking device for protecting the limit position of a wire collecting support plate according to claim 9, characterized in that: Second pin holes are formed in the U-shaped seat (812) and the movable ejector rod (82) directly above the first pin holes, and a limit pin rod (815) is inserted into the plurality of second pin holes.

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