A limiting device to prevent mechanical movement

Abstract

This invention discloses a limiting device for preventing mechanical movement, comprising a fixed base plate. A hydraulic cylinder base is fixed to the top of the fixed base plate by fastening bolts, and a fixed base is provided at the bottom of the fixed base plate. Rectangular grooves are formed on the top outer walls of the fixed base plate on both sides of the width of the fixed base plate, and a sliding groove is formed in the middle of the rectangular grooves. Anti-movement grooves are formed on both sides of the bottom of the fixed base plate in the width direction, and L-shaped anti-movement blocks are provided below the anti-movement grooves. This invention, by setting buffering and force-relieving components on both sides of the bottom of the fixed base plate, and utilizing the cooperation of arc-shaped springs and buffer springs, can adjust the position of the pressing push plate according to the actual impact force, satisfying the safe force-relieving range under different impact forces. This can reduce the problem of hydraulic cylinder crushing damage caused by sudden excessive impact force, achieve force relief of a certain impact force, and improve the overall safety of the limiting device.

Description

Technical Field

[0001] This invention relates to the field of steel rolling production technology, and in particular to a limiting device for preventing mechanical movement. Background Technology

[0002] The hot rolling mill's HSP production line currently has a coil centering mechanism at the entrance uncoiling machine. This mechanism uses a hydraulic cylinder to drive a gearbox, which in turn moves the coil on the mandrel axially to achieve centering adjustment during strip uncoiling. However, the existing hydraulic cylinder, due to its high driving force and reliance on bolt locking, is prone to back-and-forth movement, leading to insufficient coil centering accuracy and affecting the coil shape. Therefore, an external limiting device is needed to fix and limit the hydraulic cylinder during operation. However, the existing limiting device has several problems in its use:

[0003] 1. Simple structure and poor stability. Existing hydraulic cylinder base limiting devices, in the process of preventing the hydraulic cylinder base from moving, mostly use the method of directly welding the limiting block for blocking and limiting due to the simple overall structure. However, under the long-term impact of steel coil winding, this structure will cause problems such as the limiting block detaching from the weld and the limiting block wearing out and gaps, thus failing to effectively solve the problem of movement in a long time.

[0004] 2. Susceptible to crush damage. Existing hydraulic cylinder base limiting and fixing devices mostly use direct welding to limit and fix the hydraulic cylinder base. However, the impact force generated when winding steel coils of different sizes is different. When a large impact force is generated, if there is no effective buffering and stress relief, it will not only damage the limiting device, but also cause irreversible stress crush damage to the hydraulic cylinder. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a limiting device to prevent mechanical movement.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A limiting device for preventing mechanical movement includes a fixed base plate. A hydraulic cylinder base is fixed to the top of the fixed base plate by fastening bolts, and a fixed base is provided at the bottom of the fixed base plate. The top outer wall of the fixed base plate on both sides of the width of the fixed base plate has rectangular grooves, and a sliding groove is provided in the middle of the rectangular grooves. The bottom of the fixed base plate has anti-movement grooves in the width direction, and an L-shaped anti-movement block is provided below the anti-movement grooves. Buffer springs are welded to both ends of the back of the L-shaped anti-movement block. A pressing push plate is slidably inserted into the inner wall of the sliding groove, and a first arc-shaped spring is welded to the middle outer wall of the L-shaped anti-movement block. A second arc-shaped spring is welded to the pressing push plate near the middle outer wall of the L-shaped anti-movement block, and the first arc-shaped spring and the second arc-shaped spring press against each other.

[0008] The fixed base has symmetrically distributed L-shaped grooves on its outer walls at the midpoint of both sides. T-shaped sliders are slidably inserted into the inner walls of the L-shaped grooves. Support rods are welded to the outer walls of the T-shaped sliders, and wedge-shaped blocks are welded to the top outer walls of the support rods. Adjustment guide grooves are formed on the fixed base plates in the middle of the two wedge-shaped blocks, and adjustment blocks are slidably installed on the inner walls of the adjustment guide grooves. Trapezoidal limit blocks are welded to the top outer walls of the adjustment blocks, and adjustment screws are screwed into the middle of the adjustment blocks. The two wedge-shaped blocks... A first threaded waist hole is opened through the outer wall of the relatively close side, and a second threaded waist hole is opened through the outer walls of both ends of the trapezoidal limiting block. The inner wall size of the first threaded waist hole is the same as that of the second threaded waist hole, and a fastening screw is screwed to the inner wall of the first threaded waist hole and the second threaded waist hole. The inner walls of the two wedge blocks on opposite sides have parallel limiting grooves, and parallel limiting sliders are welded to the outer walls of both sides of the trapezoidal limiting block. The limiting grooves and limiting sliders are mutually compatible.

[0009] As a further embodiment of the present invention: a pressing push plate is slidably inserted into the inner wall of the sliding groove, and an adjusting screw is screwed to the bottom of the pressing push plate. A worm wheel is welded to the outer wall of the adjusting screw, and a worm is engaged with the bottom outer wall of the worm wheel. A rotating shaft is welded to the axis of the worm. The outer wall of the rotating shaft is rotatably mounted on a connecting block, and the connecting block has equidistantly distributed positioning holes around the rotating shaft. A rotating sleeve for a positioning rod is inserted and welded to the inner wall of the positioning hole, and an anti-slip block is welded to the inner wall of the rotating sleeve. An anti-slip groove is formed on the outer wall of the rotating shaft, and the anti-slip groove is adapted to the anti-slip block.

[0010] As a further embodiment of the present invention: both ends of the T-shaped slider are provided with through-holes for fixing, and the inner walls of the fixing holes are fitted with fixing pins.

[0011] As a further aspect of the present invention: silicone anti-collision pads are bonded to both outer walls of the trapezoidal limiting block along the inclined surface, and the distance between the wedge block and the trapezoidal limiting block is adapted to the thickness of the silicone anti-collision pads.

[0012] Compared with the prior art, the present invention provides a limiting device for preventing mechanical movement, which has the following beneficial effects:

[0013] 1. The limiting device for preventing mechanical movement designed in this paper effectively limits and blocks the hydraulic cylinder base by using the cooperation of wedge blocks and trapezoidal limiting blocks. Furthermore, the gap can be finely adjusted by moving the trapezoidal limiting blocks back and forth according to actual needs, thus meeting different requirements and greatly improving the practicality of the limiting device.

[0014] 2. The limiting device for preventing mechanical movement in this design has a trapezoidal limiting block and a wedge-shaped block with a limiting groove and a limiting slider on their opposite outer walls. This ensures that the trapezoidal limiting block can guide and adjust its movement length when an external impact force is generated, thereby avoiding damage caused by excessive squeezing force. In addition, the contact surface between the trapezoidal limiting block and the wedge-shaped block is equipped with a silicone anti-collision pad for soft contact protection, which can provide a certain degree of protection.

[0015] 3. The limiting device for preventing mechanical movement in this design uses buffer and force-relieving components on both sides of the bottom of the fixed base plate to work together. By using the cooperation of the arc-shaped spring and the buffer spring, the position of the squeezing push plate can be adjusted according to the actual impact force, so as to meet the safe force relief range under different impact forces. This can reduce the problem of hydraulic cylinder squeezing damage caused by sudden excessive impact force, achieve force relief of a certain impact force, and improve the overall safety of the limiting device.

[0016] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a limiting device for preventing mechanical movement proposed in this invention;

[0018] Figure 2 This is a side view of the overall structure of a limiting device for preventing mechanical movement proposed in this invention;

[0019] Figure 3 This is a top view of the overall structure of a limiting device for preventing mechanical movement proposed in this invention;

[0020] Figure 4 This is a front view of the overall structure of a limiting device for preventing mechanical movement proposed in this invention;

[0021] Figure 5 This is a schematic diagram showing the disassembled structure of a limiting device for preventing mechanical movement proposed in this invention;

[0022] Figure 6 This is a first-view structural schematic diagram of a limiting device for preventing mechanical movement proposed in this invention.

[0023] In the diagram: 1. Fixed base plate; 2. Fastening bolt; 3. Hydraulic cylinder base; 4. Fixed base; 5. Rectangular groove; 6. Sliding groove; 7. L-shaped anti-slip block; 8. Buffer spring; 9. First arc-shaped spring; 10. Second arc-shaped spring; 11. Adjusting screw; 12. Worm gear; 13. Worm; 14. Rotating shaft; 15. Connecting block; 16. Positioning hole; 17. Positioning rod; 18. Rotating sleeve; 19. L-shaped 20. Slide groove; 21. T-shaped slider; 22. Anti-slip groove; 23. Support rod; 24. Wedge block; 25. Fixing hole; 26. Fixing pin; 27. Limiting slide groove; 28. First threaded waist hole; 29. ​​Adjusting guide groove; 30. Adjusting block; 31. Trapezoidal limiting block; 32. Adjusting screw; 33. Second threaded waist hole; 34. Fastening screw; 35. Limiting slider; 36. Silicone anti-collision pad; 37. Extrusion push plate. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Example 1:

[0026] A limiting device for preventing mechanical movement, as described in this embodiment, Figure 1-6 As shown, it includes a fixed base plate 1. The top of the fixed base plate 1 is fixed with a hydraulic cylinder base 3 by fastening bolts 2, and the bottom of the fixed base plate 1 is provided with a fixed base 4. The top outer wall of the fixed base 4 on both sides of the width of the fixed base plate 1 has a rectangular groove 5, and a sliding groove 6 is provided in the middle of the rectangular groove 5. The bottom of the fixed base plate 1 has anti-slip grooves 21 in the width direction, and an L-shaped anti-slip block 7 is provided below the anti-slip groove 21. Both ends of the back of the L-shaped anti-slip block 7 are welded with buffer springs 8.

[0027] The inner wall of the sliding groove 6 is slidably connected to a pressing push plate 36, and the bottom of the pressing push plate 36 is screwed with an adjusting screw 11. The outer wall of the adjusting screw 11 is welded with a worm gear 12, and the bottom outer wall of the worm gear 12 is engaged with a worm 13. A rotating shaft 14 is welded at the axis of the worm 13. The outer wall of the rotating shaft 14 is rotatably mounted on a connecting block 15, and the connecting block 15 has equidistantly distributed positioning holes 16 around the rotating shaft 14.

[0028] The inner wall of the positioning hole 16 is welded with a rotating sleeve 18 to which a positioning rod 17 is inserted, and the inner wall of the rotating sleeve 18 is welded with an anti-slip block. The outer wall of the rotating shaft 14 is provided with an anti-slip groove, which is adapted to the anti-slip block. The middle outer wall of the L-shaped anti-slip block 7 is welded with a first arc-shaped spring piece 9, and the extrusion push plate 36 is close to the middle outer wall of the L-shaped anti-slip block 7 and a second arc-shaped spring piece 10 is welded thereon. The first arc-shaped spring piece 9 and the second arc-shaped spring piece 10 extrude each other.

[0029] By using the wedge block 23 and the trapezoidal limiting block 30 to limit the movement, the hydraulic cylinder base 3 can be effectively blocked. Furthermore, by adjusting the trapezoidal limiting block 30 to move back and forth according to actual needs, the gap can be finely adjusted to meet different requirements and greatly improve the practicality of the limiting device.

[0030] The fixed base 4 has symmetrically distributed L-shaped grooves 19 on the outer wall of the middle of both sides of the length, and T-shaped sliders 20 are slidably inserted into the inner wall of the L-shaped grooves 19. The outer wall of the T-shaped sliders 20 is welded with support rods 22, and the top outer wall of the support rods 22 is welded with wedge blocks 23. The outer walls of both sides of the trapezoidal limiting block 30 are glued with silicone anti-collision pads 35 along the inclined surface.

[0031] The distance between the wedge block 23 and the trapezoidal limiting block 30 is adapted to the thickness of the silicone anti-collision pad 35. Both ends of the T-shaped slider 20 are provided with fixing holes 24, and fixing pins 25 are installed in the inner wall of the fixing holes 24. An adjustment guide groove 28 is provided on the fixing base plate 1 in the middle of the two wedge blocks 23, and an adjustment block 29 is slidably installed on the inner wall of the adjustment guide groove 28. A trapezoidal limiting block 30 is welded to the top outer wall of the adjustment block 29, and an adjustment screw 31 is screwed into the middle of the adjustment block 29.

[0032] The outer walls of the two wedge blocks 23 that are close to each other have a first threaded waist hole 27 through them, and the outer walls of both ends of the trapezoidal limiting block 30 have a second threaded waist hole 32 through them. The inner wall size of the first threaded waist hole 27 is the same as the inner wall size of the second threaded waist hole 32, and the inner walls of the first threaded waist hole 27 and the second threaded waist hole 32 are screwed with fastening screws 33. The inner walls of the two wedge blocks 23 that are opposite each other have parallel limiting grooves 26, and the outer walls of both sides of the trapezoidal limiting block 30 are welded with parallel limiting sliders 34. The limiting grooves 26 and the limiting sliders 34 are adapted to each other.

[0033] Example 2:

[0034] A limiting device to prevent mechanical movement, such as Figure 1-6As shown, this embodiment makes the following additions based on embodiment 1: it includes a fixed base plate 1, the top of which is fixed with a hydraulic cylinder base 3 by fastening bolts 2, and a fixed base 4 is provided at the bottom of the fixed base plate 1. The top outer wall of the fixed base 4 on both sides of the width of the fixed base plate 1 has rectangular grooves 5, and a sliding groove 6 is provided in the middle of the rectangular grooves 5. The bottom of the fixed base plate 1 has anti-slip grooves 21 in the width direction, and an L-shaped anti-slip block 7 is provided below the anti-slip grooves 21. Buffer springs 8 are welded to both ends of the back of the L-shaped anti-slip block 7.

[0035] The inner wall of the sliding groove 6 is slidably connected to a pressing push plate 36, and the bottom of the pressing push plate 36 is screwed with an adjusting screw 11. The outer wall of the adjusting screw 11 is welded with a worm gear 12, and the bottom outer wall of the worm gear 12 is engaged with a worm 13. A rotating shaft 14 is welded at the axis of the worm 13. The outer wall of the rotating shaft 14 is rotatably mounted on a connecting block 15, and the connecting block 15 has equidistantly distributed positioning holes 16 around the rotating shaft 14.

[0036] The trapezoidal limiting block 30 and the wedge block 23 are provided with limiting grooves 26 and limiting sliders 34 on their opposite outer walls. This ensures that the trapezoidal limiting block 30 can guide and adjust its movement length when an external impact force is generated, thereby avoiding damage caused by excessive squeezing force. In addition, the contact surface between the trapezoidal limiting block 30 and the wedge block 23 is provided with silicone anti-collision pads 35 for soft contact protection, which can play a certain protective role.

[0037] The inner wall of the positioning hole 16 is welded with a rotating sleeve 18 to which a positioning rod 17 is inserted, and the inner wall of the rotating sleeve 18 is welded with an anti-slip block. The outer wall of the rotating shaft 14 is provided with an anti-slip groove, which is adapted to the anti-slip block. The middle outer wall of the L-shaped anti-slip block 7 is welded with a first arc-shaped spring piece 9, and the extrusion push plate 36 is close to the middle outer wall of the L-shaped anti-slip block 7 and a second arc-shaped spring piece 10 is welded thereon. The first arc-shaped spring piece 9 and the second arc-shaped spring piece 10 extrude each other.

[0038] The fixed base 4 has symmetrically distributed L-shaped grooves 19 on the outer wall of the middle of both sides of the length, and T-shaped sliders 20 are slidably inserted into the inner wall of the L-shaped grooves 19. The outer wall of the T-shaped sliders 20 is welded with support rods 22, and the top outer wall of the support rods 22 is welded with wedge blocks 23. The outer walls of both sides of the trapezoidal limiting block 30 are glued with silicone anti-collision pads 35 along the inclined surface.

[0039] The distance between the wedge block 23 and the trapezoidal limiting block 30 is adapted to the thickness of the silicone anti-collision pad 35. Both ends of the T-shaped slider 20 are provided with fixing holes 24, and fixing pins 25 are installed in the inner wall of the fixing holes 24. An adjustment guide groove 28 is provided on the fixing base plate 1 in the middle of the two wedge blocks 23, and an adjustment block 29 is slidably installed on the inner wall of the adjustment guide groove 28. A trapezoidal limiting block 30 is welded to the top outer wall of the adjustment block 29, and an adjustment screw 31 is screwed into the middle of the adjustment block 29.

[0040] By setting buffer and force-relieving components on both sides of the bottom of the fixed base plate 1 and cooperating with each other, and by cooperating with the arc-shaped spring and the buffer spring 8, the position of the extrusion push plate can be adjusted according to the actual impact force, so as to meet the safe force relief range under different impact forces. This can reduce the problem of hydraulic cylinder extrusion damage caused by sudden excessive impact force, achieve force relief of a certain impact force, and improve the overall safety of the limit device.

[0041] The outer walls of the two wedge blocks 23 that are close to each other have a first threaded waist hole 27 through them, and the outer walls of both ends of the trapezoidal limiting block 30 have a second threaded waist hole 32 through them. The inner wall size of the first threaded waist hole 27 is the same as the inner wall size of the second threaded waist hole 32. The inner walls of the first threaded waist hole 27 and the second threaded waist hole 32 are screwed with fastening screws 33. The inner walls of the two wedge blocks 23 that are close to each other have parallel limiting grooves 26. The outer walls of both sides of the trapezoidal limiting block 30 are welded with parallel limiting sliders 34. The limiting grooves 26 and the limiting sliders 34 are adapted to each other.

[0042] In this embodiment, the fixed base plate 1 is first placed on top of the fixed base 4, and the hydraulic cylinder base 3 is fixedly installed using the fastening bolts 2. Then, the L-shaped anti-slip block 7 is placed inside the rectangular groove, and the first arc-shaped spring piece 9 and the second arc-shaped spring piece 10 are installed between the L-shaped anti-slip block 7 and the extrusion push plate 36. After completion, the adjusting screw 31 is rotated, and the trapezoidal limiting block 30 is slid to its farthest distance using the adjusting screw 31. Then, the wedge block 23 with the T-shaped slider 20 welded on it is slidably inserted into the L-shaped groove 19. After moving the wall to the bottom, the T-shaped slider 20 is fixed by inserting the fixing pin 25 into the fixing hole 24. After that, the trapezoidal limiting block 30 is slid to a suitable range to squeeze and limit the movement of the two wedge blocks 23. The two wedge blocks 23 are tightly attached to the bottom of the hydraulic cylinder base 3 to limit the bottom of the hydraulic cylinder. After that, the adjusting screw 31 is screwed into the first threaded waist hole 27 and the second threaded waist hole 32 to reinforce the trapezoidal limiting block 30 and the wedge block 23.

[0043] In practical use, when the hydraulic cylinder of the steel coil centering mechanism is prone to back-and-forth movement due to its large driving force and the fact that it is only locked with bolts, the hydraulic cylinder base 3 will squeeze the middle wedge block 23 when it is about to move. Since there is a trapezoidal limiting block 30 between the wedge blocks 23, a limiting and locking treatment is achieved. With the continuous application of impact force, the trapezoidal limiting block 30 will slide along the position of the limiting groove 26 to relieve the force. In addition, there is a silicone anti-collision pad 35 between the trapezoidal limiting block 30 and the wedge block 23, which can provide a certain degree of soft protection. When the external impact force is suddenly too large, the wedge blocks 23 on both sides will deform due to the excessive force, and the fixing base plate 1 will move along the impact force. The device slides in the direction of the impact. Since the bottom of the fixed base plate 1 is provided with two mutually pressing first arc-shaped spring pieces 9 and second arc-shaped spring pieces 10, the elastic potential energy of the two pressing against each other will cancel out the kinetic energy of the impact. With the buffering treatment of the compression spring 8, the force can be quickly unloaded and the displacement caused by the impact can be reduced. This can provide a certain protection for the hydraulic cylinder. After the force is unloaded, the first arc-shaped spring piece 9 and the second arc-shaped spring piece 10 will be reset, thereby pushing the fixed base plate 1 to the original position. Since the movement gap is small, the force can be unloaded and it can also play a corresponding second protective limit role. With double limit and force unloading protection, the overall safety of the device during use is improved.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A limiting device for preventing mechanical movement, comprising a fixed base plate (1), characterized in that, The top of the fixed base plate (1) is fixed with a hydraulic cylinder base (3) by fastening bolts (2), and a fixed base (4) is provided at the bottom of the fixed base plate (1). The fixed base (4) has a rectangular groove (5) on the top outer wall on both sides of the width of the fixed base plate (1), and a sliding groove (6) is provided in the middle of the rectangular groove (5). The bottom of the fixed base plate (1) has anti-slip grooves (21) in the width direction, and an L-shaped anti-slip block (7) is provided below the anti-slip groove (21). Buffer springs (8) are welded to both ends of the back of the L-shaped anti-slip block (7). A pressing push plate (36) is slidably inserted into the inner wall of the sliding groove (6), and a first arc-shaped spring piece (9) is welded to the middle outer wall of the L-shaped anti-slip block (7). A second arc-shaped spring piece (10) is welded to the middle outer wall of the pressing push plate (36) near the L-shaped anti-slip block (7), and the first arc-shaped spring piece (9) and the second arc-shaped spring piece (10) press against each other. The fixed base (4) has symmetrically distributed L-shaped grooves (19) on the outer walls of both sides of its length. T-shaped sliders (20) are slidably inserted into the inner walls of the L-shaped grooves (19). Support rods (22) are welded to the outer walls of the T-shaped sliders (20), and wedge blocks (23) are welded to the top outer walls of the support rods (22). Adjustment guide grooves (28) are opened on the fixed base plate (1) in the middle of the two wedge blocks (23), and adjustment blocks (29) are slidably installed on the inner walls of the adjustment guide grooves (28). Trapezoidal limit blocks (30) are welded to the top outer walls of the adjustment blocks (29), and adjustment screws (31) are screwed into the middle of the adjustment blocks (29). The outer wall of the wedge block (23) with the relatively close side has a first threaded waist hole (27) through it, and the outer walls of both ends of the trapezoidal limiting block (30) have a second threaded waist hole (32) through it. The inner wall size of the first threaded waist hole (27) is the same as the inner wall size of the second threaded waist hole (32), and the inner walls of the first threaded waist hole (27) and the second threaded waist hole (32) are screwed with fastening screws (33). The inner walls of the two wedge blocks (23) with opposite sides have mutually parallel limiting grooves (26), and the outer walls of both sides of the trapezoidal limiting block (30) are welded with mutually parallel limiting sliders (34). The limiting grooves (26) and the limiting sliders (34) are mutually compatible.

2. The limiting device for preventing mechanical movement according to claim 1, characterized in that, The bottom of the extrusion push plate (36) is screwed with an adjusting screw (11), and a worm wheel (12) is welded to the outer wall of the adjusting screw (11). A worm (13) is engaged with the bottom outer wall of the worm wheel (12), and a rotating shaft (14) is welded to the axis of the worm (13). The outer wall of the rotating shaft (14) is rotatably mounted on the connecting block (15), and the connecting block (15) has equidistantly distributed positioning holes (16) around the rotating shaft (14). The inner wall of the positioning hole (16) is inserted and welded with a rotating sleeve (18) of a positioning rod (17), and the inner wall of the rotating sleeve (18) is welded with an anti-slip block. The outer wall of the rotating shaft (14) has an anti-slip groove, and the anti-slip groove is compatible with the anti-slip block.

3. The limiting device for preventing mechanical movement according to claim 1, characterized in that, Both ends of the T-shaped slider (20) are provided with fixed insertion holes (24), and fixed pins (25) are inserted into the inner wall of the fixed insertion holes (24).

4. The limiting device for preventing mechanical movement according to claim 1, characterized in that, The trapezoidal limiting block (30) has silicone anti-collision pads (35) bonded to both outer walls along the inclined surface, and the distance between the wedge block (23) and the trapezoidal limiting block (30) is adapted to the thickness of the silicone anti-collision pads (35).

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