Molten steel sampling device based on roller

Abstract

The utility model discloses a roller-based molten steel sampling device, and belongs to the technical field of steel smelting auxiliary equipment. The provided roller-based molten steel sampling device comprises a first bracket, a second bracket, a third bracket, a fourth bracket, two fifth brackets, a sixth bracket, forty screws, eight linear bearings, twelve wheels, twelve hinges, eight screw rods and eight nuts, the device can realize the purpose of vacuum sampling of molten steel, and has the characteristics of low manufacturing cost, simplicity in operation and good use effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary equipment for steel smelting, and particularly relates to a roller-based molten steel sampling device. Background Art

[0002] At present, the chemical composition, gas content and inclusion composition of molten steel are important reference bases for process control in the steelmaking process. Therefore, extracting a certain amount of molten steel from the ladle as a sample has become an important process in the iron and steel production process. Usually, a molten steel sampler includes a suspension rod, a vertical rod and a sampling cup. The sampling cup is fixed at one end of the vertical rod, and the other end of the vertical rod is flexibly connected to the suspension rod. During use, the operator grabs the suspension rod, immerses the sampling cup into the molten steel, and then takes out the sampling cup filled with molten steel. After the molten steel solidifies, corresponding physical and chemical property tests are carried out to be able to timely adjust the process parameters. Since the sampling personnel are far away from the ladle opening, the suspension rod usually has a certain inclination angle. Under the action of the gravity moment of the sampling cup, the slender suspension rod will bend, and in this way, the sampling cup may bump into the lining material of the ladle.

[0003] After retrieval, it is found that there are three literature patents most relevant to the technology of the present utility model, and the specific contents are described as follows:

[0004] Document CN201420319410.8 discloses a mobile clean molten steel sampling device in the smelting process, which includes a sampling steel cup, a spring, a pressing plate, a positioning rod, a cross bar, a nut, a screw rod, a motor, a bracket, a sampling cart, a sliding sleeve, a connecting rod, a rotating shaft, an arc-shaped clamping plate, arc-shaped teeth, a guide rail and a pin shaft. Although this device can achieve automatic control and reach the goal of quickly extracting molten steel, it cannot achieve vacuum sampling.

[0005] Document CN201520751214.2 discloses a molten steel sampler, which includes a vertical rod, a sampling cup, an outer suspension rod, an inner suspension rod, a clamping piece, a hinge shaft, a torsion spring, a chuck, a plug and a slider. Although this device can adjust the lengths of the suspension rod and the vertical rod, it also cannot achieve vacuum sampling.

[0006] Document CN201911001221.X discloses a continuous molten steel sampler for different depths, which includes an outer sleeve, a slider, a position control rod, a support rod, a connecting plate, a steel wire rope, a driving wheel, a driven wheel, a motor, a lifting plate, a gear, a rack, a mounting frame, a base, a rotating wheel and a lead screw. Although this device can quickly extract molten steel samples at different depths, it also cannot achieve vacuum sampling. Content of the Utility Model

[0007] In order to overcome one or more of the problems existing in the prior art, the present utility model provides a roller-based molten steel sampling device. The use of linear bearings enables the third bracket to move along a predetermined trajectory; the use of screws can achieve the linkage between the first bracket and the sixth bracket vehicle, as well as the linkage between the linear bearings and the sixth bracket vehicle; the combined use of the fourth bracket and the fifth bracket enables the sixth bracket vehicle to move along a predetermined trajectory; the combined use of the first bracket and the third bracket can achieve the precise positioning of the second bracket and the vacuum sampling of molten steel. Therefore, the use effect of the device of the present utility model is relatively good.

[0008] The technical solution adopted by the present utility model to solve its technical problems is described as follows.

[0009] The roller-based molten steel sampling device provided by the present utility model includes: a first bracket, a second bracket, a third bracket, a fourth bracket, two fifth brackets, a sixth bracket, forty screws, eight linear bearings, twelve wheels, twelve hinges, eight screw rods and eight nuts;

[0010] The first bracket is composed of a first body and eight first bosses connected. Both the first body and the first bosses are symmetric cuboid structures. The eight first bosses are divided into four groups and are located on the upper end surface of the first body at the same time. A cylindrical first through hole is opened at the middle position of the first body, and the second boss of the second bracket is inserted into the first through hole. A cuboid-shaped first through groove can be formed between two first bosses in each group, and the seventh body of the sixth bracket is inserted into the first through groove. A cylindrical second through hole is opened on each of the front and rear sides of the first through groove, and the screw is inserted into the second through hole.

[0011] The second bracket is composed of a second body and a second boss connected. Both the second body and the second boss are symmetric cylindrical structures. The second boss is located on the lower end surface of the second body. A frustum-shaped third through hole is opened at the axis position of the second body, and the fourth boss of the third bracket is inserted into the third through hole. A frustum-shaped first groove is opened on the upper end surface of the second boss, and the fourth boss of the third bracket is inserted into the first groove. The first groove and the third through hole are coaxially connected.

[0012] The third bracket is composed of a third body, four third bosses and a fourth boss connected together. The third body is a symmetric cuboid structure. The four third bosses are simultaneously located on the upper end face of the third body, and the fourth boss is located on the lower end face of the third body. The third boss is a symmetric cylinder structure for passing through the eleventh through-hole of the linear bearing. The fourth boss is a symmetric frustum structure for passing through the third through-hole and the first groove of the second bracket.

[0013] The fourth bracket is composed of a fifth body, four sixth bosses and four seventh bosses connected together. The fifth body, the sixth bosses and the seventh bosses are all symmetric cuboid structures. The four sixth bosses are simultaneously located on the lower end face of the fifth body, and the four seventh bosses are respectively located on the lower end faces of the four sixth bosses. A rectangular second groove is provided on the lower end face of the seventh boss, and the wheel is passed through the second groove. A cylindrical fourth through-hole is respectively provided on the left and right sides of the second groove, and the hinge is passed through the fourth through-hole. A rectangular fifth through-hole is provided at the middle position of the fifth body, and the third bracket is passed through the fifth through-hole. Two groups of eight cylindrical sixth through-holes are symmetrically provided on the fifth body, and the screw is passed through the sixth through-hole.

[0014] The fifth bracket is composed of a sixth body and two eighth bosses connected together. The sixth body and the eighth bosses are all symmetric cuboid structures. The two eighth bosses are simultaneously located on the lower end face of the sixth body. Four cylindrical seventh through-holes are symmetrically provided on the sixth body, and the screw is passed through the seventh through-hole. A rectangular third groove is provided on the left end face of the eighth boss for guiding the wheel.

[0015] The sixth bracket is composed of two seventh bodies and a ninth boss connected together. The seventh bodies and the ninth boss are all symmetric cuboid structures. The ninth boss is located between the two seventh bodies. A rectangular second through-groove is respectively provided on the left end face and the right end face of the seventh body, and the wheel is passed through the second through-groove. Two cylindrical eighth through-holes are respectively provided on the front and rear sides of the second through-groove, and the hinge is passed through the eighth through-hole. Four first screw holes are symmetrically provided on the seventh body, and the screw is screwed into the first screw hole. Four cylindrical ninth through-holes are symmetrically provided on the ninth boss, and the tenth boss of the linear bearing is passed through the ninth through-hole. Four second screw holes are evenly provided around the ninth through-hole, and the screw is screwed into the second screw hole.

[0016] In some embodiments, the screw is composed of a coaxial fourth body and a fifth boss connected thereto. Both the fourth body and the fifth boss are symmetric structures in the shape of a cylinder. The fifth boss is located at the rear end face of the fourth body. The end of the fifth boss is provided with a thread for screwing into the first screw hole or the second screw hole of the sixth bracket.

[0017] In some embodiments, the linear bearing is composed of an eighth body and a tenth boss connected thereto. The tenth boss is located on the upper end face of the eighth body. The eighth body is a symmetric structure in the shape of a cuboid. Four cylindrical tenth through holes are symmetrically formed in the eighth body, and the screw is inserted through the tenth through holes. The tenth boss is a symmetric structure in the shape of a cylinder. A cylindrical eleventh through hole is formed at the axial position of the tenth boss, and the third boss of the third bracket is inserted through the eleventh through hole. The eleventh through hole also penetrates through the eighth body. A cage, balls and snap rings are further provided inside the tenth boss. A plurality of the balls are evenly arranged inside the cage, and the snap rings are provided at both ends of the cage.

[0018] In some embodiments, the threaded end of the screw rod is screwed with the nut.

[0019] In some embodiments, the wheel, the hinge, the screw rod and the nut are all standard parts.

[0020] The beneficial effects of the present utility model are as follows:

[0021] 1) The molten steel sampling device based on a roller type provided by the present utility model includes a first bracket, a second bracket, a third bracket, a fourth bracket, two fifth brackets, a sixth bracket, forty screws, eight linear bearings, twelve wheels, twelve hinges, eight screw rods and eight nuts. Since the materials are common and easy to process and form, the manufacturing cost of the device of the present utility model is relatively low.

[0022] 2) When the present utility model is used, move the sixth bracket cart upward and move the fourth bracket cart horizontally so that the first bracket and the second bracket are opposite to the ladle. Move the sixth bracket cart downward so that the second bracket passes through the slag layer and is completely immersed in the molten steel. Move the third bracket upward along the eight eleventh through holes of the eight linear bearings, and pull out the fourth boss of the third bracket from the third through hole and the first groove of the second bracket. In this way, the molten steel will fill the first groove and the third through hole of the second bracket. Therefore, the operation of the device of the present utility model is relatively simple.

[0023] 3) The device of the present utility model is designed with a symmetrical structure. The use of linear bearings enables the third bracket to move along a predetermined trajectory; the use of screws can achieve the linkage between the first bracket and the sixth bracket cart, and also the linkage between the linear bearings and the sixth bracket cart; the combined use of the fourth bracket and the fifth bracket enables the sixth bracket cart to move along a predetermined trajectory; the combined use of the first bracket and the third bracket can achieve both the precise positioning of the second bracket and the vacuum sampling of molten steel. Therefore, the use effect of the device of the present utility model is relatively good.

[0024] Through the roller-based molten steel sampling device provided by the present utility model, the purpose of vacuum sampling of molten steel can be achieved. The device of the present utility model has the characteristics of low manufacturing cost, simple operation and good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the front view structural schematic diagram of the roller-based molten steel sampling device of the present utility model before sampling;

[0026] Figure 2 is the left view structural schematic diagram of the roller-based molten steel sampling device of the present utility model before sampling;

[0027] Figure 3 is the top view structural schematic diagram of the roller-based molten steel sampling device of the present utility model before sampling;

[0028] Figure 4 is the front view structural schematic diagram of the roller-based molten steel sampling device of the present utility model during sampling;

[0029] Figure 5 is the left view structural schematic diagram of the roller-based molten steel sampling device of the present utility model during sampling;

[0030] Figure 6 is the front view structural schematic diagram of the first bracket of the present utility model;

[0031] Figure 7 is the left view structural schematic diagram of the first bracket of the present utility model;

[0032] Figure 8 is the top view structural schematic diagram of the first bracket of the present utility model;

[0033] Figure 9 is the front view structural schematic diagram of the second bracket of the present utility model;

[0034] Figure 10 is the top view structural schematic diagram of the second bracket of the present utility model;

[0035] Figure 11The front view structural schematic diagram of the third support of the present utility model;

[0036] Figure 12 The left view structural schematic diagram of the screw of the present utility model;

[0037] Figure 13 The front view structural schematic diagram after the fourth support and the wheel of the present utility model are assembled;

[0038] Figure 14 The left view structural schematic diagram after the fourth support and the wheel of the present utility model are assembled;

[0039] Figure 15 The bottom view structural schematic diagram after the fourth support and the wheel of the present utility model are assembled;

[0040] Figure 16 The left view structural schematic diagram of the fifth support of the present utility model;

[0041] Figure 17 The bottom view structural schematic diagram of the fifth support of the present utility model;

[0042] Figure 18 The front view structural schematic diagram after the sixth support and the wheel of the present utility model are assembled;

[0043] Figure 19 The left view structural schematic diagram after the sixth support and the wheel of the present utility model are assembled;

[0044] Figure 20 The top view structural schematic diagram after the sixth support and the wheel of the present utility model are assembled;

[0045] Figure 21 The front view structural schematic diagram of the linear bearing of the present utility model;

[0046] Figure 22 The top view structural schematic diagram of the linear bearing of the present utility model.

[0047] Description of reference numerals: 1 - First bracket; 101 - First body; 102 - First boss; 103 - First through hole; 104 - Second through hole; 105 - First through groove; 2 - Second bracket; 201 - Second body; 202 - Second boss; 203 - Third through hole; 204 - First groove; 3 - Third bracket; 301 - Third body; 302 - Third boss; 303 - Fourth boss; 4 - Screw; 401 - Fourth body; 402 - Fifth boss; 5 - Fourth bracket; 501 - Fifth body; 502 - Sixth boss; 503 - Seventh boss; 504 - Fourth through hole; 505 - Second groove; 506 - Fifth through hole; 507 - Sixth through hole; 6 - Fifth bracket; 601 - Sixth body; 602 - Eighth boss; 603 - Seventh through hole; 604 - Third groove; 7 - Sixth bracket; 701 - Seventh body; 702 - Ninth boss; 703 - Second through groove; 704 - First screw hole; 705 - Eighth through hole; 706 - Ninth through hole; 707 - Second screw hole; 8 - Linear bearing; 801 - Eighth body; 802 - Tenth boss; 803 - Tenth through hole; 804 - Eleventh through hole; 9 - Wheel; 10 - Hinge; 11 - Screw rod; 12 - Nut. Detailed implementation manners

[0048] The content of the present utility model will be described in detail below through embodiments and the drawings. The embodiments are only for understanding the present utility model and do not limit the content of the present utility model.

[0049] Combined with Figures 1 to 5As shown in the figure, the utility model provides a roller-based molten steel sampling device, which comprises a first bracket 1, a second bracket 2, a third bracket 3, a fourth bracket 5, two fifth brackets 6, a sixth bracket 7, forty screws 4, eight linear bearings 8, twelve wheels 9, twelve hinges 10, eight screw rods 11 and eight nuts 12; wherein, the two fifth brackets 6 are oppositely arranged at the lower end surface of the fifth body 501 of the fourth bracket 5 and are connected by the eight screw rods 11 and the eight nuts 12; eight of the wheels 9 roll within the four third grooves 604 of the two fifth brackets 6, the eight wheels 9 are arranged within the four second through grooves 703 of the sixth bracket 7 and are hinged by the twelve hinges 10; the eight tenth bosses 802 of the eight linear bearings 8 are arranged within the four ninth through holes 706 of the sixth bracket 7 and are connected by the thirty-two screws 4; the four third bosses 302 of the third bracket 3 are arranged within the eight eleventh through holes 804 of the eight linear bearings 8, and the fourth boss 303 of the third bracket 3 is arranged within the third through hole 203 and the first groove 204 of the second bracket 2; the second boss 202 of the second bracket 2 is arranged within the first through hole 103 of the first bracket 1, and the two seventh bodies 701 of the sixth bracket 7 are arranged between the eight first bosses 102 of the first bracket 1 and are connected by the eight screws 4; four of the wheels 9 are arranged within the four second grooves 505 of the fourth bracket 5 and are hinged by the four hinges 10.

[0050] Assembly method of the roller-based molten steel sampling device provided by the utility model

[0051] Combined with Figures 1 to 22 As shown in the figure, first, four of the wheels 9 are arranged within the four second grooves 505 of the fourth bracket 5, and the four axial holes of the four wheels 9 are aligned with the four fourth through holes 504 of the fourth bracket 5. Then, the four hinges 10 are installed within the four groups of aligned through holes. In this way, the fourth bracket 5 and the four wheels 9 can be assembled into a fourth bracket vehicle.

[0052] Then, eight of the wheels 9 are arranged within the four second through grooves 703 of the sixth bracket 7, and the eight axial holes of the eight wheels 9 are aligned with the eight eighth through holes 705 of the sixth bracket 7. Then, the eight hinges 10 are installed within the eight groups of aligned through holes. In this way, the sixth bracket 7 and the eight wheels 9 can be assembled into a sixth bracket vehicle.

[0053] Then, the eight tenth bosses 802 of the eight linear bearings 8 are inserted into the four ninth through holes 706 of the sixth bracket 7. Next, the thirty-two tenth through holes 803 of the eight linear bearings 8 are aligned with the sixteen second screw holes 707 of the sixth bracket 7. Then, the thirty-two screws 4 are passed through the thirty-two tenth through holes 803 and screwed into the sixteen second screw holes 707. In this way, the eight linear bearings 8 and the sixth bracket 7 can be assembled by the thirty-two screws 4;

[0054] Then, the four third bosses 302 of the third bracket 3 are inserted into the eight eleventh through holes 804 of the eight linear bearings 8. Next, the eight first bosses 102 of the first bracket 1 are sleeved outside the front and rear four end faces of the two seventh bodies 701 of the sixth bracket 7. Then, the eight second through holes 104 of the first bracket 1 are aligned with the four first screw holes 704 of the sixth bracket 7 located below. Then, the eight screws 4 are passed through the eight second through holes 104 and screwed into the four first screw holes 704. In this way, the third bracket 3, the sixth bracket 7, and the first bracket 1 can be assembled;

[0055] Then, the two fifth brackets 6 are oppositely arranged on the lower end face of the fifth body 501 of the fourth bracket 5. Next, the eight wheels 9 installed on the sixth bracket 7 are simultaneously arranged in the four third grooves 604 of the two fifth brackets 6. Then, the eight seventh through holes 603 of the two fifth brackets 6 are aligned with the eight sixth through holes 507 of the fourth bracket 5. Then, eight screws 11 are inserted into the eight groups of aligned through holes. Then, eight nuts 12 are screwed onto the threaded ends of the eight screws 11. In this way, the two fifth brackets 6 and the fourth bracket 5 can be assembled;

[0056] Then, the second boss 202 of the second bracket 2 is inserted into the first through hole 103 of the first bracket 1. Finally, the fourth boss 303 of the third bracket 3 is inserted into the third through hole 203 and the first groove 204 of the second bracket 2. In this way, the entire set of devices is assembled and can be put into use.

[0057] The working principle of the molten steel sampling device based on rollers provided by the present utility model

[0058] Since both the third through-hole 203 and the first groove 204 of the second bracket 2 are frustum-shaped, and the fourth boss 303 of the third bracket 3 is also frustum-shaped, the fourth boss 303 of the third bracket 3 can just pass through the third through-hole 203 and the first groove 204 of the second bracket 2; since the third through-hole 203 and the first groove 204 of the second bracket 2 are used to hold molten steel, and before the second body 201 and the second boss 202 of the second bracket 2 are submerged in the molten steel, the fourth boss 303 of the third bracket 3 always passes through the third through-hole 203 and the first groove 204 of the second bracket 2, and since the fourth boss 303 of the third bracket 3 can perfectly fit with the third through-hole 203 and the first groove 204 of the second bracket 2, there is no air in the third through-hole 203 and the first groove 204 of the second bracket 2, that is, the third through-hole 203 and the first groove 204 of the second bracket 2 are both in a vacuum state, so that the molten steel obtained will not be contaminated by air.

[0059] Usage method of the roller-based molten steel sampling device provided by the present utility model

[0060] First, move the sixth support cart upward, and then move the fourth support cart horizontally so that the first bracket 1 and the second bracket 2 can face the ladle, and ensure that the fourth boss 303 of the third bracket 3 always passes through the third through-hole 203 and the first groove 204 of the second bracket 2, as Figure 1 and Figure 2 shown; then move the sixth support cart downward so that the second bracket 2 passes through the slag layer and is completely submerged in the molten steel, and then move the third bracket 3 upward along the eight eleventh through-holes 804 of the eight linear bearings 8 to extract the fourth boss 303 of the third bracket 3 from the third through-hole 203 and the first groove 204 of the second bracket 2. In this way, the molten steel will fill the first groove 204 and the third through-hole 203 of the second bracket 2, as Figure 4 and Figure 5 shown.

[0061] Supplementary note: The roller-based molten steel sampling device provided by the present utility model is designed with a symmetrical structure. First, multiple specifications of the device of the present utility model should be designed and manufactured to match the diameter specification of the ladle, the installation height of the ladle, and the actual depth of the molten steel; at the same time, it should be ensured that the fourth boss 303 of the third bracket 3 can perfectly fit with the third through-hole 203 and the first groove 204 of the second bracket 2 so as to realize the vacuum sampling of molten steel and further realize the true and reliable detection data.

[0062] As can be seen from the embodiments, by using the molten steel sampling device based on the roller type provided by the present utility model, the purpose of vacuum sampling of molten steel can be achieved. The device of the present utility model has the characteristics of low manufacturing cost, simple operation and good use effect.

[0063] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features.

Claims

1. A roller-type molten steel sampling device, characterized in that: The roller-type molten steel sampling device comprises: a first bracket (1), a second bracket (2), a third bracket (3), a fourth bracket (5), two fifth brackets (6), a sixth bracket (7), forty screws (4), eight linear bearings (8), twelve wheels (9), twelve hinges (10), eight screw rods (11) and eight nuts (12), wherein: The first bracket (1) is composed of a first body (101) and eight first bosses (102) connected together. The first body (101) and the first bosses (102) are both rectangular parallelepiped symmetrical structures. The eight first bosses (102) are divided into four groups and are simultaneously located on the upper end surface of the first body (101); a cylindrical first through hole (103) is provided in the middle of the first body (101), and a second boss (202) of the second bracket (2) is inserted into the first through hole (103); a rectangular first through groove (105) can be formed between the two first bosses (102) in each group, and a seventh body (701) of the sixth bracket (7) is inserted into the first through groove (105); a cylindrical second through hole (104) is provided on the front and rear sides of the first through groove (105), and the screw (4) is inserted into the second through hole (104); The second bracket (2) is composed of a second body (201) and a second boss (202) connected together; the second body (201) and the second boss (202) are both cylindrical symmetrical structures; the second boss (202) is located on the lower end surface of the second body (201); a third truncated cone-shaped through hole (203) is provided at the axial position of the second body (201); a fourth boss (303) of the third bracket (3) is penetrated in the third through hole (203); a first truncated cone-shaped groove (204) is provided on the upper end surface of the second boss (202); the fourth boss (303) of the third bracket (3) is penetrated in the first groove (204); the first groove (204) and the third through hole (203) are coaxially connected; The third bracket (3) is composed of a third body (301), four third bosses (302) and a fourth boss (303) connected together; the third body (301) is a rectangular parallelepiped symmetrical structure; the four third bosses (302) are simultaneously located on the upper end surface of the third body (301); the fourth boss (303) is located on the lower end surface of the third body (301); the third boss (302) is a cylindrical symmetrical structure, used for penetrating the eleventh through hole (804) of the linear bearing (8); the fourth boss (303) is a truncated cone symmetrical structure, used for penetrating the third through hole (203) and the first groove (204) of the second bracket (2); The fourth bracket (5) is composed of a fifth body (501), four sixth bosses (502) and four seventh bosses (503) connected together; the fifth body (501), the sixth boss (502) and the seventh boss (503) are all rectangular parallelepiped symmetrical structures; the four sixth bosses (502) are simultaneously located on the lower end surface of the fifth body (501); the four seventh bosses (503) are respectively located on the lower end surfaces of the four sixth bosses (502); the lower end surface of the seventh boss (503) is provided with a second rectangular parallelepiped groove (505); the second groove (505) is provided with a second groove (505) in the shape of a rectangular parallelepiped; The wheel (9) is inserted into the groove (505); a cylindrical fourth through hole (504) is respectively provided on the left and right sides of the second groove (505), and the hinge (10) is inserted into the fourth through hole (504); a rectangular fifth through hole (506) is provided in the middle of the fifth body (501), and the third bracket (3) is inserted into the fifth through hole (506); the fifth body (501) is symmetrically provided with two groups of eight cylindrical sixth through holes (507), and the screw (11) is inserted into the sixth through hole (507); The fifth bracket (6) is composed of a sixth body (601) and two eighth bosses (602) connected together, the sixth body (601) and the eighth boss (602) are both rectangular parallelepiped symmetrical structures, and the two eighth bosses (602) are simultaneously located on the lower end surface of the sixth body (601); the sixth body (601) is symmetrically provided with four cylindrical seventh through holes (603), and the screw rod (11) is passed through the seventh through holes (603); the left end surface of the eighth boss (602) is provided with a rectangular parallelepiped third groove (604) for guiding the wheel (9); The sixth bracket (7) is composed of two seventh bodies (701) and a ninth boss (702) connected together. The seventh body (701) and the ninth boss (702) are both rectangular parallelepiped symmetrical structures. The ninth boss (702) is located between the two seventh bodies (701). The left end face and the right end face of the seventh body (701) are respectively provided with a second rectangular parallelepiped through groove (703), and the wheel (9) is penetrated in the second through groove (703). Two cylindrical eighth through holes (703) are respectively provided on the front and rear sides of the second through groove (703). 5), the hinge (10) is inserted into the eighth through hole (705); the seventh body (701) is symmetrically provided with four first screw holes (704), and the screws (4) are screwed into the first screw holes (704); the ninth boss (702) is symmetrically provided with four cylindrical ninth through holes (706), and the tenth boss (802) of the linear bearing (8) is inserted into the ninth through hole (706); four second screw holes (707) are evenly provided around the ninth through hole (706), and the screws (4) are screwed into the second screw holes (707).

2. The roller-type molten steel sampling device according to claim 1 is characterized in that: The screw (4) is composed of a fourth body (401) and a fifth boss (402) which are coaxially connected. The fourth body (401) and the fifth boss (402) are both cylindrical symmetrical structures. The fifth boss (402) is located at the rear end surface of the fourth body (401). The end of the fifth boss (402) is provided with a thread for screwing into the first screw hole (704) or the second screw hole (707) of the sixth bracket (7).

3. The roller-type molten steel sampling device according to claim 1 is characterized in that: The linear bearing (8) is composed of an eighth body (801) and a tenth boss (802) connected together, wherein the tenth boss (802) is located on the upper end surface of the eighth body (801); the eighth body (801) is a rectangular parallelepiped symmetrical structure, and the eighth body (801) is symmetrically provided with four cylindrical tenth through holes (803), and the screw (4) is passed through the tenth through hole (803); the tenth boss (802) is a cylindrical symmetrical structure. The structure comprises an eleventh cylindrical through hole (804) at the axial position of the tenth boss (802), the third boss (302) of the third bracket (3) is passed through the eleventh through hole (804), and the eleventh through hole (804) also passes through the eighth body (801); a retaining frame, a ball and a retaining ring are also provided inside the tenth boss (802), a plurality of the balls are evenly arranged inside the retaining frame, and the retaining rings are provided at both ends of the retaining frame.

4. The roller-type molten steel sampling device according to claim 1 is characterized in that: The threaded end of the screw rod (11) is screwed with the nut (12).

5. The roller-type molten steel sampling device according to claim 1 is characterized in that: The wheel (9), the hinge (10), the screw rod (11) and the nut (12) are all standard parts.

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