Short-stress rolling mill stand

Abstract

The utility model belongs to the field of short-stress rolling mill stands, and particularly relates to a short-stress rolling mill stand which comprises a stand body and a fixed base. A mounting mechanism is arranged in the fixed base and comprises a fixed rod, the fixed rod is inserted into a fixed groove, the fixed groove is formed in the bottom end of the rack main body, the bottom end of the rack main body is inserted into a mounting groove, the mounting groove is formed in the fixed base, and the fixed rod is slidably connected into a movable groove. The movable groove is communicated with the cavity, the movable groove and the cavity are both formed in the fixed base, the interior of the cavity is rotationally connected with a rotating rod, the rotating rod is provided with a plurality of sections of threads with opposite rotating directions, and the rotating rod is in threaded connection with a movable block; and through the structural design of the mounting mechanism, the function of conveniently connecting the bottom end of the rack main body and the fixed base together is achieved.

Description

Technical Field

[0001] The utility model relates to the field of short stress rolling mill frames, in particular to a short stress rolling mill frame. Background Art

[0002] At present, my country's modern small-scale bar, wire and narrow strip steel rolling workshops generally use high-rigidity short-stress line rolling mills. This type of machine has become the mainstream model configured by various steel companies due to its advantages such as large frame rigidity and high product precision. The so-called short stress line means that compared with the traditional arch-type rolling mill, this model has shortened the stress loop line.

[0003] According to the patent document: CN202122103971.7, a rolling mill frame is proposed, the frame includes a fixed base, a fixed structure is provided between the fixed base and the mounting surface, a plurality of columns are provided on the top edge of the fixed base, a crossbeam is provided on the top of the column, a pull rod is provided on both sides of the top of the crossbeam, a protective cover and a bracket are provided on the outside of the pull rod, a first rotating shaft is provided on the top of the pull rod, the first rotating shaft is arranged parallel to the crossbeam, one end of the first rotating shaft is provided with a first gear motor for driving the first rotating shaft, a box body is also provided above the first rotating shaft, both sides of the box body are respectively fixedly connected to the pull rods on both sides, a second rotating shaft is provided on the top of the box body, one end of the second rotating shaft is provided with a second gear motor for driving the second rotating shaft, a worm structure is provided at the fixing place of the two ends of the second rotating shaft and the box body, and a half coupling is provided on the inner side of the worm structure. The beneficial effects of the utility model are: the frame structure of the technical solution is compact, occupies a small area, indirectly improves production efficiency and saves production costs.

[0004] However, in the above-mentioned technology, a rolling mill frame has its bottom end fixed by multiple sets of bolts. During the installation and disassembly of the bottom end of the rolling mill frame, these bolts need to be tightened, which makes the disassembly and assembly more time-consuming. Therefore, a short-stress rolling mill frame is proposed to address the above-mentioned problem. Utility Model Content

[0005] In order to make up for the shortcomings of the prior art, a rolling mill frame in the above-mentioned technology has a bottom end fixed by multiple sets of bolts. During the installation and disassembly of the bottom end of the rolling mill frame, these bolts need to be tightened, which makes the disassembly and assembly more time-consuming. The utility model proposes a short stress rolling mill frame.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a short stress rolling mill frame described in the utility model comprises a frame body and a fixed base; a mounting mechanism is arranged inside the fixed base, and the mounting mechanism comprises a fixing rod, the fixing rod is inserted in a fixing groove, the fixing groove is arranged at the bottom end of the frame body, the bottom end of the frame body is inserted in the mounting groove, the mounting groove is arranged on the fixed base, the fixing rod is slidably connected to the inside of the movable groove, the movable groove is communicated with the cavity, the movable groove and the cavity are both arranged inside the fixed base, the inside of the cavity is rotatably connected with a rotating rod, the rotating rod is arranged with multiple sections of threads with opposite rotation directions, a moving block is threadedly connected to the rotating rod, the top of the moving block is fixedly connected with a protrusion, one side of the fixed rod is fixedly connected with a spring, and the front end of the rotating rod is provided with a driving assembly.

[0007] Preferably, the driving assembly includes a worm wheel, which is fixedly connected to the front end of the rotating rod, the worm wheel is meshed with the worm, and the worm wheel and the worm are both rotatably connected inside the casing, the casing is fixedly connected to the front end of the fixed base, the right side of the worm is fixedly connected to the motor shaft, the right side of the casing is fixedly connected to an extension plate, and the extension plate is fixedly connected to the driving motor.

[0008] Preferably, a slot is provided on the motor shaft, the motor shaft is sleeved inside a sleeve, and a screw is threadedly connected to the top end of the sleeve.

[0009] Preferably, two groups of guide rods are passed through the interior of the moving block, and the front and rear sides of the guide rods are fixedly connected to the inner wall of the cavity.

[0010] Preferably, three groups of collars are rotatably connected to the rotating rod, the bottom ends of the collars are fixedly connected to the bottom ends of the cavities, and notches are provided on both the left and right sides of the collars.

[0011] Preferably, a cushion block is fixedly connected to one side of the protrusion close to the fixing rod, and the cushion block is made of rubber material.

[0012] Preferably, a positioning groove is provided on the inner wall of the installation groove, a positioning column is slidably connected inside the positioning groove, and the positioning column is fixedly connected to the bottom end of the frame body.

[0013] The utility model is beneficial in that:

[0014] 1. The utility model realizes the function of facilitating the connection between the bottom end of the frame body and the fixed base through the structural design of the mounting mechanism, and solves the problem that the bottom end of a rolling mill frame in the above-mentioned technology is fixed by multiple sets of bolts, and these bolts need to be tightened during the installation and disassembly of the bottom end of the rolling mill frame, which makes the disassembly and assembly more time-consuming;

[0015] 2. The utility model adopts the structural design of the driving assembly, and the driving motor drives the worm to rotate, and the rotation is transmitted to the rotating rod through the engagement of the worm wheel and the worm, thereby ensuring that the rotating rod can only rotate when the driving motor is working, avoiding the situation where the rotating rod rotates due to accidentally hitting the front end part of the rotating rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the fixed base of the utility model;

[0019] Figure 3 It is a schematic cross-sectional structure diagram of the fixed base of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the rotating rod of the utility model;

[0021] Figure 5 It is a structural schematic diagram of the drive assembly of the utility model.

[0022] In the figure: 1, frame body; 20, fixed base; 21, fixed groove; 22, mounting groove; 23, fixed rod; 24, movable groove; 25, spring; 26, moving block; 27, rotating rod; 28, cavity; 29, protrusion; 30, worm gear; 31, worm; 32, casing; 33, screw; 34, sleeve; 35, motor shaft; 36, slot; 37, drive motor; 38, pad; 39, guide rod; 40, collar; 41, extension plate; 42, positioning groove; 43, positioning column. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 - Figure 5 As shown, a short stress rolling mill frame includes a frame body 1 and a fixed base 20; a mounting mechanism is arranged inside the fixed base 20, and the mounting mechanism includes a fixing rod 23, the fixing rod 23 is designed in an L shape, and the fixing rod 23 is inserted in a fixing groove 21, and the part of the fixing rod 23 inserted in the fixing groove 21 is designed in a trapezoidal shape, so as to contact with the bottom end part of the frame body 1, and push the fixing rod 23 to move, and the fixing groove 21 is provided at the bottom end of the frame body 1, and the fixing groove 21 is designed in a rectangular shape and its size is adapted to the fixing rod 23, and the bottom end of the frame body 1 is inserted in the mounting groove 22, and the size of the mounting groove 22 is adapted to the bottom end part of the frame body 1, so that the bottom end of the frame body 1 will not shake greatly when it is installed on the fixed base 20, and the installation The groove 22 is provided on the fixed base 20, and the fixed rod 23 is slidably connected to the inside of the movable groove 24. The movable groove 24 is communicated with the cavity 28. The cavity 28 is designed to be a long rectangle. The movable groove 24 and the cavity 28 are both provided inside the fixed base 20. The inside of the cavity 28 is rotatably connected with a rotating rod 27. The front and rear ends of the rotating rod 27 are provided with threads. The rotating rod 27 is provided with multiple sections of threads with opposite rotation directions. The rotating rod 27 is threadedly connected with a moving block 26. A protrusion 29 is welded and fixed to the top of the moving block 26. A spring 25 is welded and fixed to one side of the fixed rod 23. The spring 25 is fixed in the movable groove 24 for resetting the fixed rod 23. At the same time, it also ensures that the fixed rod 23 can keep engaging with the fixed groove 21. The front end of the rotating rod 27 is provided with a driving component.

[0025] During operation, a rolling mill frame in the above technology has a bottom end fixed by multiple sets of bolts. In the process of installing and disassembling the bottom end of the rolling mill frame, these bolts need to be tightened, which makes it time-consuming to install and disassemble. The structural design of the installation mechanism realizes the function of facilitating the connection between the bottom end of the frame body 1 and the fixed base 20. When the frame body 1 is to be installed on the fixed base 20, first align the bottom end part of the frame body 1 with the installation groove 22 provided on the fixed base 20 and insert it into it. The bottom end part of the frame body 1 will push the fixing rod 23 to move to both sides, and the spring 25 fixed on the fixing rod 23 will be compressed. When the bottom end of the frame body 1 is completely inserted into the installation groove 22, under the action of the spring 25, the fixing rod 23 will be inserted into the fixed The frame body 1 is mounted on the fixed base 20 and the fixing is completed in the groove 21. At this point, the operation of installing the frame body 1 on the fixed base 20 is completed. Similarly, when the frame body 1 is to be removed from the fixed base 20, the rotating rod 27 is first rotated. Since the rotating rod 27 is provided with multiple sections of threads with opposite rotation directions, the two adjacent groups of moving blocks 26 will move in opposite directions during the rotation of the rotating rod 27. During the movement of the moving block 26, the protrusion 29 fixed on the moving block 26 will contact the fixing rod 23 and push the fixing rod 23 to move in the movable groove 24 until the part of the fixing rod 23 inserted in the fixing groove 21 is pulled out of the fixing groove 21. At this time, there is no fixing rod 23 engaged at the bottom end of the frame body 1, and the frame body 1 can be taken out from the fixed base 20. At this point, the operation of disassembling the frame body 1 and the fixed base 20 is completed.

[0026] Further, the driving assembly includes a worm wheel 30, the worm wheel 30 and the front end of the rotating rod 27 are fixed by welding, the front end portion of the rotating rod 27 is arranged outside the fixed base 20, so that the front end portion of the rotating rod 27 can be rotated by rotating the front end portion of the rotating rod 27, the worm wheel 30 is meshed with the worm 31, the worm wheel 30 and the worm 31 are both rotatably connected to the inside of the casing 32, the casing 32 is fixed to the front end of the fixed base 20 by welding, the casing 32 is rectangular in design and the inner wall does not contact the worm wheel 30 and the worm 31, the right side of the worm 31 is connected to the motor shaft 35, the right side of the casing 32 is welded and fixed with an extension plate 41, and the extension plate 41 is welded and fixed with a driving motor 37;

[0027] During operation, through the structural design of the driving component, the driving motor 37 drives the worm 31 to rotate, and transmits the rotation to the rotating rod 27 through the engagement of the worm wheel 30 and the worm 31, thereby ensuring that the rotating rod 27 can only rotate when the driving motor 37 is working, avoiding the situation where the rotating rod 27 rotates due to accidentally hitting the front end part of the rotating rod 27.

[0028] Furthermore, a slot 36 is provided on the motor shaft 35, and the size of the slot 36 is slightly larger than the screw 33, so as to ensure that the bottom end of the screw 33 can be inserted into the slot 36. The motor shaft 35 is sleeved inside the sleeve 34, and the sleeve 34 is T-shaped and has a thread on the top portion, and the top end of the sleeve 34 is threadedly connected to the screw 33;

[0029] During operation, part of the motor shaft 35 is sleeved in the sleeve 34. By tightening the screw 33 on the sleeve 34, the bottom end of the screw 33 can be inserted into the slot 36, so that the motor shaft 35 is fixed by the engagement between the bottom end of the screw 33 and the slot 36 to prevent the worm 31 from rotating due to vibration.

[0030] Furthermore, two sets of guide rods 39 are inserted into the interior of the moving block 26, and the front and rear sides of the guide rods 39 are fixed to the inner wall of the cavity 28 by welding;

[0031] During operation, the guide rod 39 is used to guide the moving block 26 when it moves on the rotating rod 27 , so as to ensure that the moving block 26 can move stably on the rotating rod 27 .

[0032] Furthermore, three sets of collars 40 are rotatably connected to the rotating rod 27. The three sets of collars 40 are all located in the middle of the rotating rod 27 and two of the three sets of collars 40 are close to the threads provided on the rotating rod 27. The bottom ends of the collars 40 and the bottom ends of the cavities 28 are fixed by welding. Notches are provided on both sides of the collars 40 to ensure that the collars 40 will not abut against the guide rods 39.

[0033] During operation, the three groups of rings 40 are all rotatably connected to the rotating rod 27, and the rotating rod 27 is supported by the rings 40 so that the rotating rod 27 can remain stable during the rotation process. Two of the groups of rings 40 are close to the threads on the rotating rod 27, so as to limit the moving range of the moving block 26 on the rotating rod 27, ensuring that the moving block 26 moves within a normal range.

[0034] Furthermore, a pad 38 is glued and fixed to one side of the protrusion 29 close to the fixing rod 23. The size of the pad 38 matches the protrusion 29 and is used for buffering between the protrusion 29 and the fixing rod 23. The pad 38 is made of rubber.

[0035] During operation, a cushion block 38 is fixed on the guide rod 39 , and the cushion block 38 is used for buffering between the protrusion 29 and the fixing rod 23 to reduce the wear of the protrusion 29 .

[0036] Furthermore, a positioning groove 42 is provided on the inner wall of the mounting groove 22, and a positioning column 43 is slidably connected inside the positioning groove 42. Both the positioning groove 42 and the positioning column 43 are designed to be long rectangles, and the positioning column 43 is welded and fixed to the bottom end of the frame body 1;

[0037] During operation, the design of the positioning groove 42 and the positioning column 43 facilitates positioning of the installation position of the rack body 1 when the bottom end of the rack body 1 is installed on the fixed base 20, and also prevents the bottom end of the rack body 1 from shaking significantly in the installation groove 22.

[0038] Working principle: A rolling mill frame in the prior art has a bottom end fixed by multiple sets of bolts. In the process of installing and disassembling the bottom end of the rolling mill frame, these bolts need to be tightened, which makes it time-consuming to install and disassemble. A short-stress rolling mill frame in this case realizes the function of facilitating the connection between the bottom end of the frame body 1 and the fixed base 20 through the structural design of the installation mechanism. When the frame body 1 is to be installed on the fixed base 20, first align the bottom end part of the frame body 1 with the installation groove 22 provided on the fixed base 20 and insert it. The bottom end part of the frame body 1 will push the fixing rod 23 to move to both sides, and the spring 25 fixed on the fixing rod 23 will be compressed. When the bottom end of the frame body 1 is completely inserted into the installation groove 22, under the action of the spring 25, the fixing rod 2 3 will be inserted into the fixing groove 21 to complete the engagement and fixing, so far the operation of installing the frame body 1 on the fixing base 20 is completed. Similarly, when the frame body 1 is to be removed from the fixing base 20, the rotating rod 27 is first rotated. Since the rotating rod 27 is provided with multiple sections of threads with opposite rotation directions, the two adjacent groups of moving blocks 26 will move in the opposite direction during the rotation of the rotating rod 27. During the movement of the moving block 26, the protrusion 29 fixed on the moving block 26 will contact the fixing rod 23 and push the fixing rod 23 to move in the movable groove 24 until the part of the fixing rod 23 inserted in the fixing groove 21 is pulled out of the fixing groove 21. At this time, there is no engagement of the fixing rod 23 at the bottom end of the frame body 1, and the frame body 1 can be taken out from the fixing base 20. So far the operation of disassembling the frame body 1 and the fixing base 20 is completed.

[0039] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A short stress rolling mill frame, comprising a frame body (1) and a fixed base (20); characterized in that: The fixed base (20) is provided with a mounting mechanism inside, the mounting mechanism comprising a fixing rod (23), the fixing rod (23) is inserted in a fixing groove (21), the fixing groove (21) is provided at the bottom end of the frame body (1), the bottom end of the frame body (1) is inserted in a mounting groove (22), the mounting groove (22) is provided on the fixed base (20), the fixing rod (23) is slidably connected to the inside of a movable groove (24), and the movable groove (24) is communicated with the cavity (28). The movable groove (24) and the cavity (28) are both provided inside the fixed base (20); a rotating rod (27) is rotatably connected inside the cavity (28); a plurality of threads with opposite rotation directions are provided on the rotating rod (27); a moving block (26) is threadedly connected on the rotating rod (27); a protrusion (29) is fixedly connected to the top of the moving block (26); a spring (25) is fixedly connected to one side of the fixed rod (23); and a driving assembly is provided at the front end of the rotating rod (27).

2. A short stress rolling mill stand according to claim 1, characterized in that: The driving assembly comprises a worm wheel (30), the worm wheel (30) is fixedly connected to the front end of the rotating rod (27), the worm wheel (30) is meshed with a worm (31), the worm wheel (30) and the worm (31) are both rotatably connected inside a casing (32), the casing (32) is fixedly connected to the front end of the fixed base (20), the right side of the worm (31) is fixedly connected to the motor shaft (35), the right side of the casing (32) is fixedly connected to an extension plate (41), and the extension plate (41) is fixedly connected to a driving motor (37).

3. A short stress rolling mill stand according to claim 2, characterized in that: The motor shaft (35) is provided with a slot (36), and the motor shaft (35) is sleeved inside a sleeve (34), and a screw (33) is threadedly connected to the top end of the sleeve (34).

4. A short stress rolling mill stand according to claim 1, characterized in that: Two groups of guide rods (39) are inserted into the interior of the moving block (26), and the front and rear sides of the guide rods (39) are fixedly connected to the inner wall of the cavity (28).

5. The short stress rolling mill stand according to claim 1, characterized in that: Three groups of collars (40) are rotatably connected to the rotating rod (27), the bottom ends of the collars (40) are fixedly connected to the bottom ends of the cavities (28), and notches are provided on both left and right sides of the collars (40).

6. A short stress rolling mill stand according to claim 1, characterized in that: A cushion block (38) is fixedly connected to one side of the protrusion (29) close to the fixing rod (23), and the cushion block (38) is made of rubber material.

7. The short stress rolling mill stand according to claim 1, characterized in that: A positioning groove (42) is provided on the inner wall of the installation groove (22), a positioning column (43) is slidably connected inside the positioning groove (42), and the positioning column (43) is fixedly connected to the bottom end of the frame body (1).

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