Hoisting device of sizing rack

Abstract

The utility model relates to a sizing rack hoisting device which comprises two connecting assemblies and two annular steel ropes, the two connecting assemblies correspond to two spaced plug pin holes of a sizing rack, each connecting assembly comprises a U-shaped hanging ring, a plug pin and a nut, the plug pin is arranged in the plug pin hole in a penetrating mode, the nut is located in a groove, and the U-shaped hanging rings are connected with the annular steel ropes. The nut is in threaded connection with the end, located in the groove, of the plug pin, the U-shaped hanging ring is rotationally connected to the end, away from the groove, of the plug pin in the horizontal direction, the two annular steel ropes correspond to the two connecting assemblies in a one-to-one mode, the U-shaped hanging ring is sleeved with the annular steel ropes, and a lifting hook of a traveling crane is sleeved with the annular steel ropes. The annular steel rope has the effect of prolonging the service life of the annular steel rope.

Description

Technical Field

[0001] The present application relates to the field of sizing machines, and in particular to a lifting device for a sizing machine frame. Background Art

[0002] The process research and development of seamless steel pipe products above 900mm in hot rolling direct rolling requires the use of a lifting device for the sizing rack.

[0003] The sizing machine is a machine that heats the steel pipes rolled out by the pilger mill in a walking furnace and then sizing and rolling them to obtain high-precision external dimensions; the sizing roller is the main tool for sizing, which is supported and rotated by the bearings in the sizing roller box to ensure the correct position of the sizing roller in the sizing machine frame.

[0004] The weight of the sizing machine frame is between 60-80 tons, which is a heavy frame. When disassembling and assembling the sizing rollers on the sizing machine, the sizing machine frame needs to be turned over before disassembling and assembling the sizing machine. For a long time, the steel pipe industry has been lifting by crane.

[0005] refer to Figure 1 At present, four latch holes 41 for cooperating with the latch pins 12 are provided on the end surface of the sizing frame 4, and grooves 42 communicating with the latch holes 41 are provided on the peripheral side of the sizing frame 4. The lifting device includes two latch pins 12 and two annular steel ropes 2. The two latch pins 12 correspond to the two spaced latch holes 41, and the latch pins 12 pass through the latch holes 41. The two annular steel ropes 2 correspond to the two latch pins 12 one by one. The annular steel ropes 2 are located in the grooves 42, and the latch pins 12 penetrate the annular steel ropes 2. The annular steel ropes 2 are sleeved on the hook of the crane.

[0006] During the lifting process of the sizing rack, the annular steel rope is in a taut state. As the movement state of the sizing rack changes, there will be sliding friction between the annular steel rope and the sizing rack. The annular steel rope is prone to broken strands and tension. The annular steel rope needs to be replaced frequently and has a short life. Utility Model Content

[0007] In order to increase the service life of the annular steel rope, the present application provides a lifting device for a sizing frame.

[0008] The present application provides a lifting device for a sizing rack, which adopts the following technical solution:

[0009] A lifting device for a sizing frame comprises two connecting components and two annular steel ropes, wherein the two connecting components correspond to two latch holes spaced apart from the sizing frame, the connecting component comprises a U-shaped hanging ring, a latch and a nut, the latch is inserted into the latch hole, the nut is located in a groove, the nut is threadedly connected to one end of the latch located in the groove, the U-shaped hanging ring is rotatably connected to one end of the latch away from the groove along the horizontal direction, the two annular steel ropes correspond one to one with the two connecting components, the annular steel ropes are sleeved on the U-shaped hanging ring, and the annular steel ropes are sleeved on the hook of a crane.

[0010] By adopting the above technical scheme, the staff first inserts the pin into the pin hole of the sizing frame, and then connects the nut to the end of the pin through a threaded connection, so that the pin cannot be separated from the sizing frame, and then sets the annular steel rope on the U-shaped hanging ring on the hook of the crane. When the sizing frame is lifted by the crane, the sizing frame will shake, and the rotational connection between the pin and the U-shaped hanging ring can be used to absorb the shaking of the sizing frame. The U-shaped hanging ring with a circular cross-section further reduces the friction between the annular steel rope and the U-shaped hanging ring. The connecting assembly reduces the friction between the annular steel rope and the sizing frame, and improves the service life of the annular steel rope.

[0011] Optionally, the connecting assembly further comprises a gasket, the outer diameter of the gasket is larger than the diameter of the circumscribed circle of the nut, and the gasket is located between the nut and the inner side wall of the groove of the sizing machine frame.

[0012] By adopting the above technical solution, since the nut needs to bear the entire gravity of the sizing rack, the nut will also provide supporting force to the sizing rack, and the contact area between the nut and the sizing rack is small, the nut is prone to deformation of the contact surface with the sizing rack, and the gasket is used to transfer the supporting force of the nut to the sizing rack. The contact area between the gasket and the sizing rack is larger than the contact area between the nut and the sizing rack, thereby reducing the pressure on the sizing rack and reducing the deformation of the sizing rack.

[0013] Optionally, the gasket includes a first gasket and a second gasket, the first gasket is arranged on the inner wall of the groove, the first gasket has an annular groove on one end facing the nut, the second gasket is located between the first gasket and the nut, the second gasket has a ring on one end facing the first gasket, and the ring is used to abut against the annular groove.

[0014] By adopting the above technical solution, when the staff needs to install the pin, the staff first inserts the pin into the pin hole and passes it through the first gasket, the pin is inserted into the groove, the ring of the second gasket is abutted with the ring groove of the first gasket, and then the nut is threaded on the pin, and the nut abuts on the second gasket; the ring groove and the ring cooperate to increase the contact area between the first gasket and the second gasket, and increase the friction between the first gasket and the second gasket. Through the cooperation of the first gasket and the second gasket, the second gasket and the nut fit more evenly, which can make the tightening force of the nut more stable, and improve the reliability of the connection between the nut and the pin.

[0015] Optionally, a limit strip is provided on the latch pin, the length direction of the limit strip is parallel to the rotation direction of the U-shaped hanging ring, and the sizing machine frame is provided with a plurality of limit slots for clamping the limit strip, and the limit slots are used to make the rotation directions of the U-shaped hanging rings of the two connecting components parallel to each other.

[0016] By adopting the above technical solution, when the latch is inserted into the latch hole, the limit strip on the latch is engaged with the limit groove on the sizing frame; the limit strip makes the rotation directions of the U-shaped hanging rings of the two connecting components parallel to each other, so that when the sizing frame moves relative to the crane, the movement states between the U-shaped hanging rings and the latch in the two connecting components are consistent, the sizing frame is more stable in the air, and the occurrence of the sizing frame flipping is reduced.

[0017] Optionally, the limiting strip is provided with a guiding slope for facilitating entry into the limiting groove.

[0018] By adopting the above technical solution, when the staff inserts the pin into the pin hole, the guiding inclined surface facilitates the limit strip to be snapped into the limit groove.

[0019] Optionally, the U-shaped hanging ring is provided with a disassembly part for separating from the latch pin, the disassembly part includes a disassembly bolt and a disassembly nut, the length direction of the disassembly bolt is parallel to the rotation direction of the U-shaped hanging ring, the disassembly bolt passes through the latch pin and the U-shaped hanging ring, and the disassembly nut is threadedly connected to the disassembly bolt.

[0020] By adopting the above technical solution, the service life of the annular steel rope is extended. In order to ensure safety, the annular steel rope needs to be replaced within the specified time. The staff can first remove the disassembly nut from the disassembly bolt, and then pull the disassembly bolt out of the U-shaped hanging ring and the pin. At this time, the U-shaped hanging ring is separated from the pin, and the staff can remove the annular steel rope from the U-shaped hanging ring for replacement. Then, the disassembly bolt is passed through the U-shaped hanging ring and the pin, and the disassembly bolt cooperates with the disassembly nut to complete the replacement of the annular steel rope.

[0021] Optionally, a hexagonal cavity for accommodating the disassembly nut is provided on the U-shaped hanging ring, and the disassembly nut can be snapped into the hexagonal cavity.

[0022] By adopting the above technical solution, when the staff needs to install the U-shaped hanging ring on the pin, the staff first clamps the disassembly nut in the hexagonal cavity, and the disassembly nut cannot rotate relative to the disassembly bolt. Then the disassembly bolt passes through the U-shaped hanging ring and the pin, and the disassembly bolt rotates relative to the disassembly nut. The disassembly bolt and the disassembly nut are threadedly connected to complete the installation of the U-shaped hanging ring and the pin. By clamping the disassembly nut with the hexagonal cavity, the staff does not need to hold the disassembly nut, which facilitates the coordination between the disassembly bolt and the disassembly nut.

[0023] Optionally, a matching block is provided at the head of the disassembly bolt, and a matching hole for the force-saving rod to pass through is opened on the matching block.

[0024] By adopting the above technical solution, in order to improve the reliability of the U-shaped hanging ring and the pin, the disassembly bolt and the disassembly nut need to be ensured to be in a tightened state. Since the disassembly nut is located in the hexagonal cavity, the staff can use the labor-saving rod to penetrate into the matching hole, and the labor-saving rod can drive the disassembly bolt to rotate.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The sizing frame and the ring steel rope are connected through a connecting assembly, which reduces the friction between the ring steel rope and the sizing frame and extends the service life of the ring steel rope;

[0027] 2. The limiting bar makes the rotation directions of the two U-shaped hanging rings parallel to each other, and the sizing frame is more stable in the hoisting state;

[0028] 3. The disassembly parts make it easy for the staff to replace the circular steel rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the prior art.

[0030] Figure 2 It is a structural schematic diagram of the lifting device of the sizing machine frame.

[0031] Figure 3 yes Figure 1 An exploded view of the connecting assembly is used to show the fitting relationship between the sizing rack and the latch.

[0032] Figure 4 Used to show the matching relationship between the first gasket and the second gasket.

[0033] Figure 5 It is a structural diagram of the disassembled parts.

[0034] Figure numerals: 1. Connecting assembly; 11. U-shaped hanging ring; 111. Hexagonal cavity; 12. Latch; 121. Limit strip; 122. Guide slope; 13. Nut; 14. Gasket; 141. First gasket; 142. Second gasket; 143. Ring groove; 144. Circular ring; 2. Annular steel rope; 3. Disassembly part; 31. Disassembly bolt; 32. Disassembly nut; 33. Matching block; 34. Matching hole; 4. Sizing machine frame; 41. Latch hole; 42. Groove; 43. Limiting groove. DETAILED DESCRIPTION

[0035] The following is combined with Figure 2-5 This application is described in further detail.

[0036] The present application embodiment discloses a lifting device for a sizing frame. Figure 2 and Figure 3 A lifting device for a sizing frame includes two connecting components 1 and two annular steel ropes 2. The two connecting components 1 correspond to two spaced latch holes 41 of the sizing frame 4. The connecting component 1 includes a U-shaped hanging ring 11, a latch 12, a nut 13 and a gasket 14. Four limiting grooves 43 are provided on the end surface of the sizing frame 4. The four limiting grooves 43 correspond to the four latch holes 41 one by one. The length direction of the limiting grooves 43 is perpendicular to the connection direction of the corresponding latch holes 41 and the latch holes 41 arranged at intervals. The groove 43 is connected to the pin hole 41, the pin 12 is vertically arranged, and two limit strips 121 are fixedly arranged on the side wall of the pin 12. The two limit strips 121 are evenly distributed along the circumferential direction of the axis of the pin 12. The length direction of the limit strip 121 is parallel to the radial direction of the pin 12. A guiding inclined surface 122 is provided between the side wall of the limit strip 121 and the lower end surface of the limit strip 121. The pin 12 is inserted into the pin hole 41, the limit strip 121 is clamped in the limit groove 43, and the end of the pin 12 abuts against the upper end surface of the sizing frame 4.

[0037] Reference Figure 3 and Figure 4The gasket 14 includes a first gasket 141 and a second gasket 142. The outer diameter of the first gasket 141 is greater than the diameter of the circumscribed circle of the nut 13. The diameter of the second gasket 142 is equal to the diameter of the first gasket 141. The first gasket 141 is located in the groove 42 of the sizing frame 4. The first gasket 141 is coaxially arranged with the pin hole 41. The first gasket 141 is fixedly arranged on the inner side wall of the groove 42 of the sizing frame 4. The lower end surface of the first gasket 141 is provided with a plurality of annular grooves 143. The annular grooves 143 are coaxially arranged with the first gasket 141. The diameters of the plurality of annular grooves 143 gradually increase along the direction away from the axis of the first gasket 141. In addition, the second gasket 142 is located below the first gasket 141, and the second gasket 142 is coaxially arranged with the first gasket 141. A plurality of circular rings 144 are fixedly arranged on the upper end surface of the second gasket 142, and the plurality of circular rings 144 are coaxially arranged with the second gasket 142. The plurality of circular rings 144 correspond to the plurality of annular grooves 143 one by one, and the circular rings 144 are used to abut against the annular grooves 143. The nut 13 is coaxially arranged with the latch 12, and the nut 13 is located below the second gasket 142. The nut 13 is threadedly connected to the lower end surface of the latch 12, and the second gasket 142 abuts against the first gasket 141, and the nut 13 abuts against the second gasket 142.

[0038] Reference Figure 2 and Figure 5 The U-shaped hanging ring 11 is located above the sizing machine frame 4, and the two ends of the U-shaped hanging ring 11 are located on both sides of the pin 12. A disassembly part 3 is provided on the U-shaped hanging ring 11, and the disassembly part 3 includes a disassembly bolt 31 and a disassembly nut 32. The length direction of the disassembly bolt 31 is parallel to the length direction of the limiting groove 43. The disassembly bolt 31 passes through the U-shaped hanging ring 11 and the pin 12, and the pin 12 is rotatably connected with the disassembly bolt 31. A hexagonal cavity 111 is provided on the U-shaped hanging ring 11, and the hexagonal cavity 111 extends along the length direction of the disassembly bolt 31. The disassembly nut 32 is coaxially arranged with the disassembly bolt 31, and the disassembly nut 32 is located in the hexagonal cavity 111. The disassembly nut 32 is clamped in the hexagonal cavity 111, and the disassembly nut 32 is threadedly connected with the disassembly bolt 31. A matching block 33 is fixedly provided on the disassembly bolt 31, and a matching hole 34 is provided on the matching block 33. The matching hole 34 is convenient for the staff to wear the labor-saving rod.

[0039] Reference Figure 2 and Figure 5 The two annular steel ropes 2 correspond to the two connecting components 1 one by one. The annular steel ropes 2 are sleeved on the U-shaped hanging ring 11. The cross section of the U-shaped hanging ring 11 is circular. The annular steel ropes 2 are sleeved on the hook of the crane.

[0040] The implementation principle of a lifting device for a sizing frame in an embodiment of the present application is as follows: a worker first sets an annular steel rope 2 on a hook of a crane, and the annular steel rope 2 is set on a connecting assembly 1, and the height of the annular steel rope 2 and the connecting assembly 1 is lowered by the crane to facilitate the installation of the connecting assembly 1 on the sizing frame 4.

[0041] First, insert the pin 12 into the pin hole 41, and make the limit strip 121 and the limit groove 43 snap-fit, abut the second gasket 142 against the first gasket 141, and make the annular groove 143 and the circular ring 144 fit, then thread the nut 13 and the pin 12, so that the nut 13 abuts against the second gasket 142, and the second gasket 142 abuts against the first gasket 141, then start the crane to pull the annular steel rope 2, and absorb the movement of the sizing machine frame 4 through the rotation of the U-shaped hanging ring 11 and the pin 12, and the annular steel rope 2 contacts the U-shaped hanging ring 11 with a circular cross-section, thereby reducing the occurrence of broken strands and broken of the annular steel rope 2 and extending the service life of the annular steel rope 2.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lifting device for a sizing machine frame, characterized in that: The invention comprises two connecting components (1) and two annular steel ropes (2), wherein the two connecting components (1) correspond to two latch holes (41) spaced apart from each other on a sizing machine frame (4), the connecting component (1) comprises a U-shaped hanging ring (11), a latch (12) and a nut (13), wherein the latch (12) is inserted into the latch hole (41), the nut (13) is located in a groove (42), the nut (13) is threadedly connected to one end of the latch (12) located in the groove (42), the U-shaped hanging ring (11) is rotatably connected to one end of the latch (12) away from the groove (42) in a horizontal direction, the two annular steel ropes (2) correspond to the two connecting components (1) one by one, the annular steel rope (2) is sleeved on the U-shaped hanging ring (11), and the annular steel rope (2) is sleeved on a hook of a traveling crane.

2. A lifting device for a sizing frame according to claim 1, characterized in that: The connection assembly (1) further comprises a gasket (14), the outer diameter of the gasket (14) being greater than the diameter of the circumscribed circle of the nut (13), and the gasket (14) being located between the nut (13) and the inner side wall of the groove (42) of the sizing machine frame (4).

3. A lifting device for a sizing frame according to claim 2, characterized in that: The gasket (14) comprises a first gasket (141) and a second gasket (142); the first gasket (141) is arranged on the inner side wall of the groove (42); an annular groove (143) is provided at one end of the first gasket (141) facing the nut (13); the second gasket (142) is located between the first gasket (141) and the nut (13); a circular ring (144) is provided at one end of the second gasket (142) facing the first gasket (141); the circular ring (144) is used to abut against the annular groove (143).

4. A lifting device for a sizing frame according to claim 1, characterized in that: A limit strip (121) is provided on the latch pin (12), the length direction of the limit strip (121) being parallel to the rotation direction of the U-shaped hanging ring (11), and a plurality of limit slots (43) for clamping the limit strip (121) are provided on the sizing machine frame (4), the limit slots (43) being used to make the rotation directions of the U-shaped hanging rings (11) of the two connecting assemblies (1) parallel to each other.

5. A lifting device for a sizing frame according to claim 4, characterized in that: The limiting strip (121) is provided with a guiding inclined surface (122) for facilitating entry into the limiting groove (43).

6. The lifting device of the sizing frame according to claim 1, characterized in that: The U-shaped hanging ring (11) is provided with a disassembly component (3) for being separated from the latch pin (12), the disassembly component (3) comprising a disassembly bolt (31) and a disassembly nut (32), the length direction of the disassembly bolt (31) being parallel to the rotation direction of the U-shaped hanging ring (11), the disassembly bolt (31) passing through the latch pin (12) and the U-shaped hanging ring (11), and the disassembly nut (32) being threadedly connected to the disassembly bolt (31).

7. A lifting device for a sizing machine frame according to claim 6, characterized in that: The U-shaped hanging ring (11) is provided with a hexagonal cavity (111) for accommodating the disassembly nut (32), and the disassembly nut (32) can be snap-fitted into the hexagonal cavity (111).

8. A lifting device for a sizing frame according to claim 7, characterized in that: The head of the disassembly bolt (31) is provided with a matching block (33), and the matching block (33) is provided with a matching hole (34) for the labor-saving rod to pass through.

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