A hoisting device for mold steel production

Abstract

The present invention discloses a hoisting device for mold steel production, which belongs to the technical field of mold steel production, and includes a top plate and a hanging wire. A hanging ring is fixedly provided at the center of the top of the top plate, and winding mechanisms for winding the hanging wire are provided on both sides of the bottom of the top plate. The winding mechanism includes a winding assembly for winding the hanging wire and a detection assembly for detecting whether the angles of the hanging wires at both ends are in the same horizontal plane. The winding assembly includes two plate bodies, a winding roller, a first motor, a limit rod, a C-shaped rod and a conveying roller. The two plate bodies are fixedly arranged with the top plate, and the winding roller is rotatably arranged between the two plate bodies through a bearing. The present invention sets a winding mechanism, and the limit rod and the conveying roller both play the function of limiting and tightening the hanging wire, so that the hanging wire is more stable when winding, and the detection assembly can judge whether the mold steel is in a balanced hoisting state in real time during the hoisting process, and emergency treatment can be performed when the hoisting angle changes.

Description

Technical Field

[0001] The invention belongs to the technical field of die steel production, and in particular relates to a hoisting device for die steel production. Background Art

[0002] Die steel is a type of steel used to make cold stamping dies, hot forging dies, die casting dies and other dies. Dies are the main processing tools for manufacturing parts in industrial sectors such as machinery manufacturing, radio instruments, motors, and electrical appliances. The quality of the die directly affects the quality of the pressure processing technology, the precision output of the product and the production cost. The quality and service life of the die are mainly affected by the die material and heat treatment in addition to reasonable structural design and processing accuracy. When processing the die steel, a large amount of die steel needs to be hoisted to the production site for processing. Summary of the invention

[0003] The purpose of the present invention is to provide a hoisting device for mold steel production to solve the problem of hoisting and transfer during mold steel production.

[0004] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme:

[0005] According to the present invention, a hoisting device for mold steel production includes a top plate and a hanging wire, a hanging ring is fixedly provided at the center of the top of the top plate, and winding mechanisms for winding the hanging wire are provided on both sides of the bottom of the top plate, the winding mechanism includes a winding component for winding the hanging wire and a detection component for detecting whether the angles of the hanging wires at both ends are in the same horizontal plane, the winding component includes two plate bodies, a winding roller, a first motor, a limit rod, a C-shaped rod and a conveying roller, the two plate bodies are fixedly arranged with the top plate, the winding roller is rotatably arranged between the two plate bodies through a bearing, the first motor is fixedly arranged with the plate body and the output end is fixedly arranged with the winding roller, the limit rod is fixedly arranged between the two plate bodies, the two ends of the C-shaped rod are respectively fixedly arranged with one side of the outer wall of the two plate bodies, the conveying roller is rotatably arranged with the C-shaped rod through a bearing, The detection component includes a circular frame, a pointing rod, a detection piece and an alarm. The circular frame is fixed to one side wall of the plate body. There are multiple detection pieces and they are evenly arranged along the circumferential direction of the circular frame. The winding roller is fixed to the pointing rod. The alarm is fixed to the plate body. The detection piece includes a rotating plate, a butt joint and a touch switch. The rotating plate is rotatably arranged with the circular frame through a rotating shaft. The butt joint is fixed to one side of the outer wall of the rotating plate. The touch switch is fixed to the inner wall of the circular frame. A reset spring is fixed between the rotating plate and the circular frame. A first mounting mechanism for hoisting cylindrical mold steel is fixed to the bottom of the hanging wire. A second mounting mechanism for hoisting square mold steel is fixed to the bottom of the hanging wire. A positioning mechanism for preventing shaking of the mold steel during hoisting is fixed to the top plate.

[0006] Preferably, the first mounting mechanism includes a first arc-shaped clamp, a second arc-shaped clamp, a screw and a triangular support leg, the screw runs through the first arc-shaped clamp and the second arc-shaped clamp, the triangular support leg is fixed to the bottom of the second arc-shaped clamp, and the top of the first arc-shaped clamp is fixed to the suspension wire.

[0007] Preferably, the number of the second mounting mechanisms is four, and the four groups of the second mounting mechanisms match the four corners of the square mold steel.

[0008] Preferably, the second mounting mechanism includes a positioning plate, an irregular plate, a positioning screw, a triangular plate, a connecting plate, a fixed cylinder, a telescopic rod and a suction cup. The top of the positioning plate is fixed to the hanging wire. The irregular plates are provided with two and are symmetrically arranged with respect to the positioning plate. A sliding groove for the irregular plate to slide is provided inside the positioning plate. The irregular plate extends out of the positioning plate. The positioning screws are provided with two, and the positioning screw passes through two irregular plates. A sliding groove for the connecting plate to slide is provided on the outer wall of the positioning plate. The connecting plate is fixed to the irregular plate, the triangular plate is fixed to the positioning plate, a plurality of fixed cylinders are provided and are fixed to the connecting plate, the telescopic rod is slidably arranged in the fixed cylinder through a reset spring, and the suction cup is fixed to the bottom of the telescopic rod.

[0009] Preferably, the positioning mechanisms are provided in two in number and are symmetrically arranged on the top plate, the positioning mechanism comprises an electric push rod, a positioning vertical rod, a sliding ring and a locking piece, the electric push rod is fixed to the top plate, the positioning vertical rod is fixed to the output end of the electric push rod, the locking piece is provided in multiple groups and is fixed on the positioning vertical rod, the sliding ring is sleeved on the positioning vertical rod and is slidably arranged with the positioning vertical rod, and the sliding ring is fixed to a side wall of the positioning plate.

[0010] Preferably, the locking member includes a plurality of trapezoidal plates and a rod body, the trapezoidal plates are evenly arranged along the circumferential direction of the positioning vertical rod, and the positioning vertical rod is provided with a groove for the trapezoidal plates to slide, the positioning rod body is arranged concentrically with the positioning vertical rod and the positioning rod body and the positioning vertical rod are fixedly arranged, and the trapezoidal plates are slidably arranged in the positioning vertical rod through a reset spring.

[0011] The present invention is beneficial in that:

[0012] The present invention provides a winding mechanism, and the limit rod and the conveying roller all have the function of limiting and tightening the hanging wire, so that the hanging wire is more stable when winding. In the process of lifting, the detection component can judge in real time whether the mold steel is in a balanced lifting state, and first aid can be performed when the lifting angle changes.

[0013] The present invention provides a positioning mechanism, and the sliding collar is supported by the trapezoidal plates at the upper and lower positions of the sliding collar when the tilt within the safety angle, so the descending speed of the entire mold steel can be reduced to ensure a stable effect. When a tilting effect outside the safety angle occurs, it means that the lifting line on one side becomes loose and no longer exerts a pulling force on the mold steel on one side. However, the space in the sliding collar is limited. When the sliding collar tilts with the mold steel, it will be clamped on the positioning vertical rod through the trapezoidal plate, and will not shake or tilt, thereby achieving a protective effect.

[0014] The present invention provides two mounting mechanisms, and selects a corresponding first mounting mechanism or a second mounting mechanism according to different shapes, and the two can also be hoisted at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention, so that other features, purposes and advantages of the present invention become more obvious. The accompanying drawings of the exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 The overall structure of a hoisting device for die steel production of the present invention is schematically shown. Figure 1 ;

[0017] Figure 2 The overall structure of a hoisting device for die steel production of the present invention is schematically shown. Figure 2 ;

[0018] Figure 3 It is an enlarged structural schematic diagram of the winding mechanism of the present invention;

[0019] Figure 4 It is an enlarged structural schematic diagram of the winding assembly of the present invention;

[0020] Figure 5 It is a schematic diagram of the cross-sectional structure of the detection component of the present invention;

[0021] Figure 6 It is a schematic diagram of the connection structure between the first mounting mechanism and the second mounting mechanism of the present invention;

[0022] Figure 7 is an enlarged structural schematic diagram of the first mounting mechanism of the present invention;

[0023] Figure 8 is an enlarged structural schematic diagram of the second mounting mechanism of the present invention;

[0024] Fig. 9 is a partial enlarged structural schematic diagram of the second mounting mechanism of the present invention;

[0025] Fig.10It is an enlarged structural schematic diagram of the positioning mechanism of the present invention;

[0026] Fig.11 The present invention Fig.10 A is an enlarged structural diagram;

[0027] Fig.12 It is a schematic diagram of the cross-sectional structure of the locking member of the present invention.

[0028] Description of reference numerals:

[0029] 1. Top plate; 2. Lifting ring; 3. Winding mechanism; 31. Winding assembly; 311. Plate body; 312. Winding roller; 313. First motor; 314. Limit rod; 315. C-shaped rod; 316. Conveying roller; 32. Detection assembly; 321. Round frame; 322. Pointing rod; 323. Detection member; 3231. Rotating plate; 3232. Butt joint; 3233. Touch switch; 3235. Alarm; 4. First installation mechanism; 4 1. First arc clamp; 42. Second arc clamp; 43. Screw rod; 44. Triangular support leg; 5. Second mounting mechanism; 51. Positioning plate; 52. Irregular plate; 53. Positioning screw; 54. Triangular plate; 55. Connecting plate; 56. Fixing cylinder; 57. Telescopic rod; 58. Suction cup; 6. Positioning mechanism; 61. Electric push rod; 62. Positioning vertical rod; 63. Sliding collar; 64. Locking piece; 641. Trapezoidal plate; 642. Rod body. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0031] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0032] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0033] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] like Figure 1 - Fig.12As shown, a hoisting device for mold steel production according to the present invention comprises a top plate 1 and a hanging wire, a hanging ring 2 is fixedly provided at the center of the top of the top plate, and both sides of the bottom of the top plate 1 are provided with a winding mechanism 3 for winding the hanging wire, the winding mechanism 3 comprises a winding assembly 31 for winding the hanging wire and a detection assembly 32 for detecting whether the angles of the hanging wires at both ends are in the same horizontal plane, the winding assembly 31 comprises two plate bodies 311, a winding roller 312, a first motor 313, a limit rod 314, a C-shaped rod 315 and a conveyor The delivery roller 316, the two plates 311 are fixedly arranged with the top plate 1, the winding roller 312 is rotatably arranged between the two plates 311 through a bearing, the first motor 313 is fixedly arranged with the plate 311 and the output end is fixedly arranged with the winding roller 312, the limit rod 314 is fixedly arranged between the two plates 311, the two ends of the C-shaped rod 315 are respectively fixedly arranged with one side of the outer wall of the two plates 311, the delivery roller 316 is rotatably arranged with the C-shaped rod 315 through a bearing, and the detection component 32 includes a circular The circular frame 321, the pointing rod 322, the detection member 323 and the alarm 3235 are fixedly arranged on one side wall of the plate body 311, the circular frame 321 is fixedly arranged on one side wall of the plate body 311, the detection member 323 is provided with a plurality of detection members and is evenly arranged along the circumferential direction of the circular frame 321, the winding roller 312 is fixedly arranged on the pointing rod 322, the alarm 3235 is fixedly arranged on the plate body 311, the detection member 323 includes a rotating plate 3231, a butt joint 3232 and a touch switch 3233, the rotating plate 3231 is connected to the circular frame 321 through a rotating shaft Rotational setting, the abutment head 3232 is fixedly set on one side of the outer wall of the rotating plate 3231, the touch switch 3233 is fixedly set on the inner wall of the circular frame 321, a reset spring is fixedly set between the rotating plate 3231 and the circular frame 321, a first mounting mechanism 4 for hoisting the cylindrical mold steel is fixedly set at the bottom of the hanging wire, a second mounting mechanism 5 for hoisting the square mold steel is fixedly set at the bottom of the hanging wire, and a positioning mechanism 6 for preventing the mold steel from shaking when hoisting is fixedly set on the top plate 1;

[0035] First, determine whether the mold steel to be hoisted is cylindrical or square, and select the corresponding first mounting mechanism 4 or second mounting mechanism 5 according to different shapes, or both can be hoisted at the same time. After fixing, the winding component 31 winds up the mold steel, and starts the first motor 313 to drive the winding roller 312 to rotate, and further winds it up with a hanging wire. During the winding process, the limit rod 314 and the conveying roller 316 both have the function of limiting and tightening the hanging wire, so that the hanging wire is more stable when winding. During the initial stage of winding, disconnect the connection between the detection component 323 in the detection component 32 and the first motor 313, first determine the hoisting balance, and after winding is completed, restore the connection to monitor the balance of the mold steel during hoisting. When the two ends of the hanging wire are inconsistent and cause the two ends of the mold steel to tilt, it is divided into the following situations. For example, 0-90 degrees is set as a safety value When the winding roller 312 rotates within an angle of 0-90 degrees, no adjustment is required, and the tilt at this moment is almost zero. When the winding roller 312 rotates at an angle between 90 and 180 degrees, it means that the tilt angle at this moment is not dangerous but needs to be adjusted in real time. When the winding roller 312 rotates at an angle exceeding 180 degrees, it means that the suspension line is accidentally loosened and an emergency response is required immediately. The detection component 32 detects the rotation angle of the winding roller 312. For rotations within 90 degrees, the winding roller 312 drives the pointing rod 322 to rotate. At this moment, the pointing rod 322 does not trigger the detection component 323. The first two detection components 323 are triggered between 90-180 degrees and 180-270. At this time, the first motor 313 is started to reel in the suspension line to make corresponding angle adjustments. When the pointing rod 322 rotates infinitely beyond 270, the alarm 3235 is triggered to remind an unexpected situation.

[0036] Among them, the first mounting mechanism 4 includes a first arc clamp 41, a second arc clamp 42, a screw 43 and a triangular support leg 44, the screw 43 runs through the first arc clamp 41 and the second arc clamp 42, the triangular support leg 44 is fixed to the bottom of the second arc clamp 42, and the top of the first arc clamp 41 is fixed to the suspension wire. Preferably, the second mounting mechanism 5 is provided with four groups, and the four groups of the second mounting mechanisms 5 match the four corners of the square body mold steel. Secondly, the second mounting mechanism 5 includes a positioning plate 51, an irregular plate 52, a positioning screw 53, a triangular plate 54, a connecting plate 55, a fixing tube 56, a telescopic rod 57 and a suction cup 58. The top of the positioning plate 51 is fixed to the suspension wire. The irregular plates 52 are provided in two numbers and are symmetrically arranged with respect to the positioning plate 51. A sliding groove for the irregular plates 52 to slide is provided inside the positioning plate 51. The irregular plates 52 extend out of the positioning plate 51. The positioning screws 53 are provided in two numbers. The positioning screws 53 pass through the two irregular plates 52. A sliding groove for the connecting plate 55 to slide is provided on the outer wall of the positioning plate 51. The connecting plate 55 is fixedly arranged with the irregular plates 52. The triangular plate 54 is fixedly arranged with the positioning plate 51. A plurality of fixing tubes 56 are provided and are fixedly arranged with the connecting plate 55. The telescopic rod 57 is slidably arranged with the fixing tube 56 through a return spring. The suction cup 58 is fixedly arranged with the bottom of the telescopic rod 57.

[0037] First, determine whether the mold steel to be hoisted is cylindrical or square, and select the corresponding first mounting mechanism 4 or second mounting mechanism 5 according to different shapes, or both can be hoisted at the same time. When the cylindrical mold steel needs to be hoisted, the mold steel is passed through the first arc clamp 41 and the second arc clamp 42, and the distance between the first arc clamp 41 and the second arc clamp 42 is adjusted by the screw rod 43 to adapt to mold steels of different sizes. The design of the triangular support leg 44 can place the entire mold steel stably on a horizontal plane when blanking. When the square mold steel needs to be hoisted, the mold The four corners of the steel are installed with the second mounting mechanism 5 respectively. First, the four corners are placed between the two groups of suction cups 58. The connecting plate 55 is squeezed with both hands to make the irregular plate 52 slide inside the groove. The irregular shape can increase the friction between the groove and the plate, making the sliding more stable. The telescopic rod 57 slides inside the fixed tube 56 to make the upper and lower suction cups 58 adsorb and fix the surface of the mold steel, and the reset spring will provide the suction cup 58 with an extrusion force on the mold steel to enhance the connection between the two. The positioning screw 53 is used to fix the two irregular plates 52 to further fix the square mold steel.

[0038] Finally, the positioning mechanism 6 is provided with two and symmetrically arranged on the top plate 1. The positioning mechanism 6 includes an electric push rod 61, a positioning vertical rod 62, a sliding collar 63 and a locking member 64. The electric push rod 61 is fixedly arranged with the top plate 1, the positioning vertical rod 62 is fixedly arranged with the output end of the electric push rod 61, the locking member 64 is provided with multiple groups and fixedly arranged on the positioning vertical rod 62, the sliding collar 63 is sleeved on the positioning vertical rod 62 and is slidably arranged with the positioning vertical rod 62, and the sliding collar 63 is sleeved on the positioning vertical rod 62 and is slidably arranged with the positioning vertical rod 62. The movable collar 63 is fixedly arranged with one side wall of the positioning plate 51. Preferably, the locking member 64 includes a plurality of trapezoidal plates 641 and a rod body 642. The trapezoidal plates 641 are evenly arranged along the circumferential direction of the positioning vertical rod 62, and the positioning vertical rod 62 is provided with a slot for the trapezoidal plates 641 to slide. The positioning rod body 642 is arranged cocentrically with the positioning vertical rod 62 and the positioning rod body 642 is fixedly arranged with the positioning vertical rod 62. The trapezoidal plates 641 are slidably arranged in the positioning vertical rod 62 through a return spring.

[0039] During the winding process, the sliding collar 63 slides following the rise of the hanging wire, and continuously squeezes the trapezoidal plate 641 during the rising process. After the sliding stops, the trapezoidal plates 641 at the upper and lower positions of the sliding collar 63 support the sliding collar 63, which can reduce the descending speed of the entire mold steel and ensure the smooth effect of material dropping. In addition, the sliding collar 63 is limited on the positioning vertical rod 62. On the one hand, the position of the mold steel is limited to prevent the entire device and the mold steel from shaking left and right when being hoisted separately, which increases the danger. On the other hand, the locking piece 64 on the positioning vertical rod 62 limits the entire mold steel. Even if the mold steel is severely tilted on both sides due to reasons such as the disconnection of the hanging wire on the mold steel, the mold steel will not be greatly tilted left and right through the limitation of the locking piece 64.

[0040] The inclination within the safety angle is supported by the trapezoidal plates 641 at the upper and lower positions of the sliding ring 63, which can reduce the descending speed of the entire mold steel and ensure a stable effect. When the inclination effect outside the safety angle occurs, it means that the lifting line on one side becomes loose and no longer exerts a pulling force on the mold steel on one side. However, the space inside the sliding ring 63 is limited. When the sliding ring 63 tilts with the mold steel, it will be clamped on the positioning vertical rod 62 through the trapezoidal plate 641, and will not shake or tilt, thereby achieving a protective effect.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc. made should be included in the protection scope of the present invention.

Claims

1. A hoisting device for mold steel production, comprising a top plate (1) and a hanging wire, characterized in that: A hanging ring (2) is fixedly provided at the center of the top of the top plate; winding mechanisms (3) for winding the hanging wire are provided on both sides of the bottom of the top plate (1); the winding mechanism (3) comprises a winding assembly (31) for winding the hanging wire and a detection assembly (32) for detecting whether the angles of the hanging wires at both ends are in the same horizontal plane; the winding assembly (31) comprises two plate bodies (311), a winding roller (312), a first motor (313), a limit rod (314), a C-shaped rod (315) and a conveying roller (316); the two plate bodies (311) are fixedly connected to the top plate (1) The winding roller (312) is rotatably arranged between the two plates (311) via a bearing, the first motor (313) is fixedly arranged between the plates (311) and the output end is fixedly arranged between the winding roller (312), the limiting rod (314) is fixedly arranged between the two plates (311), the two ends of the C-shaped rod (315) are respectively fixedly arranged on one side of the outer wall of the two plates (311), the conveying roller (316) is rotatably arranged between the C-shaped rod (315) via a bearing, and the detection component (32) comprises a circular frame (321), a pointing rod (322), The detection member (323) and the alarm (3235) are fixedly arranged on a side wall of the plate body (311), the circular frame (321) is fixedly arranged on the side wall of the plate body (311), the detection member (323) is provided in plurality and is evenly arranged along the circumferential direction of the circular frame (321), the winding roller (312) is fixedly arranged on the pointing rod (322), the alarm (3235) is fixedly arranged on the plate body (311), the detection member (323) comprises a rotating plate (3231), an abutting head (3232) and a touch switch (3233), the rotating plate (3231) is rotated with the circular frame (321) via a rotating shaft The abutment (3232) is fixedly arranged on one side of the outer wall of the rotating plate (3231), the touch switch (3233) is fixedly arranged on the inner wall of the circular frame (321), a return spring is fixedly arranged between the rotating plate (3231) and the circular frame (321), a first mounting mechanism (4) for hoisting a cylindrical mold steel is fixedly arranged at the bottom of the suspension wire, a second mounting mechanism (5) for hoisting a square mold steel is fixedly arranged at the bottom of the suspension wire, and a positioning mechanism (6) for preventing the mold steel from shaking when being hoisted is fixedly arranged on the top plate (1).

2. The hoisting device for mold steel production according to claim 1, characterized in that: The first mounting mechanism (4) comprises a first arc-shaped clamp (41), a second arc-shaped clamp (42), a screw rod (43) and a triangular support leg (44); the screw rod (43) passes through the first arc-shaped clamp (41) and the second arc-shaped clamp (42); the triangular support leg (44) is fixed to the bottom of the second arc-shaped clamp (42); and the top of the first arc-shaped clamp (41) is fixed to the suspension wire.

3. The hoisting device for mold steel production according to claim 1, characterized in that: The number of the second mounting mechanisms (5) is four, and the four sets of the second mounting mechanisms (5) match the four corners of the square body mold steel.

4. The hoisting device for mold steel production according to claim 3 is characterized in that: The second mounting mechanism (5) comprises a positioning plate (51), an irregular plate (52), a positioning screw (53), a triangular plate (54), a connecting plate (55), a fixing tube (56), a telescopic rod (57) and a suction cup (58); the top of the positioning plate (51) is fixedly arranged with a suspension wire; two irregular plates (52) are provided and are symmetrically arranged with respect to the positioning plate (51); a sliding groove for sliding the irregular plates (52) is provided inside the positioning plate (51); the irregular plates (52) extend out of the positioning plate (51); the positioning screw ( The plurality of fixing tubes (56) are provided, and the fixing tubes (56) are provided with a plurality of fixing tubes (56) and fixed to the fixing tubes (55). The telescopic rod (57) is slidably arranged in the fixing tubes (56) via a return spring. The suction cup (58) is fixed to the bottom of the telescopic rod (57).

5. The hoisting device for mold steel production according to claim 4, characterized in that: The positioning mechanisms (6) are provided in two numbers and are symmetrically arranged on the top plate (1). The positioning mechanisms (6) comprise an electric push rod (61), a positioning vertical rod (62), a sliding collar (63) and a locking member (64). The electric push rod (61) is fixedly arranged on the top plate (1), the positioning vertical rod (62) is fixedly arranged on the output end of the electric push rod (61), the locking member (64) is provided in a plurality of groups and is fixedly arranged on the positioning vertical rod (62), the sliding collar (63) is sleeved on the positioning vertical rod (62) and is slidably arranged with the positioning vertical rod (62), and the sliding collar (63) is fixedly arranged on a side wall of the positioning plate (51).

6. A hoisting device for mold steel production according to claim 5, characterized in that: The locking member (64) comprises a plurality of trapezoidal plates (641) and a rod body (642); the trapezoidal plates (641) are evenly arranged along the circumferential direction of the positioning vertical rod (62); the positioning vertical rod (62) is provided with a slot for the trapezoidal plates (641) to slide; the rod body (642) and the positioning vertical rod (62) are arranged cocentrically and the rod body (642) and the positioning vertical rod (62) are fixedly arranged; the trapezoidal plates (641) are slidably arranged in the positioning vertical rod (62) via a return spring.

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