CN213578703U - Stable lifting device of heat treatment bell-type furnace - Google Patents

Stable lifting device of heat treatment bell-type furnace Download PDF

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Publication number
CN213578703U
CN213578703U CN202020545231.1U CN202020545231U CN213578703U CN 213578703 U CN213578703 U CN 213578703U CN 202020545231 U CN202020545231 U CN 202020545231U CN 213578703 U CN213578703 U CN 213578703U
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column
hydraulic
plate
limiting sliding
wall
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吴海军
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Danyang Hengtai Electric Furnace Co ltd
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Danyang Hengtai Electric Furnace Co ltd
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Abstract

A stable lifting device of a heat treatment bell-type furnace comprises an inner column, a hydraulic bottom plate, an outer column, a pulley, a hydraulic top plate and a hydraulic rod; the hydraulic bottom plate is arranged at the bottom end of the inner column; the hydraulic top plate is arranged at the top end of the outer column; the hydraulic stem set up in the inner prop, the bottom of hydraulic stem passes through the bolt and fixes the setting with the hydraulic ram, the top of hydraulic stem passes through the bolt and fixes the setting with hydraulic pressure bottom plate, the hydraulic stem runs through interior lagging through-hole, interior lagging through-hole. The utility model discloses every hydraulic stem makes all have good stability under each operating condition through the auxiliary stay who is provided with interior post and outer post.

Description

Stable lifting device of heat treatment bell-type furnace
Technical Field
The utility model relates to a bell-type furnace field, especially a stable form elevating gear of heat treatment bell-type furnace.
Background
The bell-type furnace is mainly used for annealing treatment of steel wires, steel pipes, copper strips, copper wires, silicon steel sheets and the like in the metallurgical industry and is used for batch heat treatment and heating of workpieces. The bell-type furnace mainly comprises a furnace platform, a furnace cover, a sealing structure and the like, wherein the bell-type furnace is a heat treatment furnace with a furnace body being a cover, or a furnace bottom being fixed and a furnace cover being movable, or the furnace cover being fixed and the furnace bottom being movable.
The lifting structure of the existing bell-type furnace aiming at the furnace cover generally adopts a special lifting appliance, a lifting fork and a hydraulic oil cylinder to carry out the lifting process. Because the general structure of bell-type furnace is huge, the heating mantle has great quality, and the lift stroke is longer, needs the elevating gear of bell-type furnace mantle to have stronger stability, guarantees that the lift process of furnace mantle is stable, wherein, in adopting hydraulic cylinder to go up and down the device, though structural style is simple, easily installation, but hydraulic cylinder and furnace mantle structural connection stability is relatively poor, and lift stability is more weak when the longer extension stroke.
SUMMERY OF THE UTILITY MODEL
In order to solve the existing problems, the utility model discloses a stable form elevating gear of heat treatment bell-type furnace, its concrete technical scheme as follows: a stable lifting device of a heat treatment bell-type furnace comprises an inner column, a hydraulic bottom plate, an outer column, a pulley, a hydraulic top plate and a hydraulic rod;
the inner column is of a hollow structure; the outer walls of two sides of the inner column are provided with limiting sliding columns which are symmetrically arranged, and the limiting sliding columns on each side are arranged in the same direction as the inner column and are fixedly connected with the outer wall of the inner column to form an integrated structure; the outer walls of two ends of the inner column are provided with limiting sliding sleeves, the number of the limiting sliding sleeves arranged on the outer wall of the inner column at each end is two, the limiting sliding sleeves are symmetrically arranged on two sides, each limiting sliding sleeve and the inner column are arranged in the same direction, and each limiting sliding sleeve and the outer wall of the inner column are welded and fixed to form an integral structure; a limiting roller groove is formed between the limiting sliding sleeves on the two sides; the inner top surface of the inner column is provided with an inner embedded plate, the inner embedded plate is fixed with the inner wall of the inner column through welding, the center of the inner embedded plate is in a through hole shape to form an embedded plate through hole, and a groove shape is formed between the inner embedded plate and the inner column to form an embedded groove; the hydraulic bottom plate is arranged at the bottom end of the inner column, and the inner column is fixed with the hydraulic bottom plate through welding;
the outer column is of a hollow structure; the inner walls of two sides of the outer column are provided with two limiting sliding plates, the two limiting sliding plates are symmetrically arranged on the inner wall of the outer column on each side, the limiting sliding plates on each side are arranged in the same direction as the outer column and are welded and fixed with the inner wall of the outer column to form an integral structure, and a limiting sliding groove is formed between the limiting sliding plates on two sides; pulley fixing pieces are arranged on the bottom sides of the inner walls of the two ends of the outer column, and the number of the pulley fixing pieces arranged at each end is two, and the pulley fixing pieces are welded and fixed with the inner wall of the outer column; the pulley is arranged between the pulley fixing pieces on the two sides, and the two ends of the pulley rotate through the rotating shaft and the pulley fixing pieces; an inner sleeve plate is arranged at the inner top end of the outer column and is fixed with the inner wall of the outer column through welding, the bottom surface of the inner sleeve plate is of a convex structure to form an inner embedded block, an inner sleeve plate through hole is formed in the center of the inner sleeve plate, and the inner sleeve plate through hole penetrates through the inner embedded plate; the outer column is sleeved on the outer side of the inner column, the limiting sliding column is embedded into the limiting sliding plate, the pulley is embedded into the limiting roller groove, and the outer column and the inner column are longitudinally limited and fixed; the hydraulic top plate is arranged at the top end of the outer column, and the outer column is fixed with the hydraulic top plate through welding; the hydraulic stem set up in the inner prop, the bottom of hydraulic stem passes through the bolt and fixes the setting with the hydraulic ram, the top of hydraulic stem passes through the bolt and fixes the setting with hydraulic pressure bottom plate, the hydraulic stem runs through interior lagging through-hole, interior lagging through-hole.
Furthermore, the appearance of interior post is rectangle column structure, the inside and outside angle of interior post all is fillet column structure.
Furthermore, the cross section of each side of the limiting sliding column is of a rectangular structure, and the outer corners of two sides of the limiting sliding column are of a round corner structure.
Furthermore, the cross section of each limiting sliding sleeve is of an L-shaped structure.
Furthermore, the cross section of the limiting roller groove is in a step shape and is in a structure with a narrow inner part and a wide outer part, and a roller sliding groove and a support sliding groove are respectively formed.
Furthermore, the appearance of outer post is the rectangle post structure, the inside and outside angle of outer post all is fillet column structure, the inner wall size of outer post is far greater than the outer wall size of outer post.
Furthermore, the shape, size and thickness of the embedded block are adapted to the shape, size and depth of the embedded groove.
Furthermore, the outer width of the two pulley fixing pieces on each side is adapted to the groove width of the support sliding groove.
Furthermore, the number of the pulleys on each side is five, and the pulleys are arranged longitudinally; every the width of pulley with the groove width of gyro wheel spout suits, the pulley laminating in the outer wall of inner prop realizes rotating.
The structure principle of the utility model is that:
when a hydraulic rod of the device is stretched, the device is in a vertical state, a furnace body of the bell-type furnace is assembled with a hydraulic top plate, the hydraulic rod is stretched and pushes the hydraulic top plate and the furnace body of the bell-type furnace to move upwards, meanwhile, an outer column moves upwards, a limiting sliding column and a limiting sliding groove slide downwards relatively, and the inner column and the outer column are limited in a radial direction; the pulley is attached to the outer wall of the inner column and rolls relatively, the pulley fixing piece is embedded into the support sliding groove, the pulley is embedded into the roller sliding groove, the pulley and the limiting roller groove slide relatively upwards, and the inner column and the outer column are limited in the latitudinal direction; and stopping moving until the hydraulic rod extends to a proper height.
When the hydraulic rod of the device is contracted, the hydraulic rod drives the hydraulic top plate and the bell-type furnace body to move downwards and simultaneously drives the outer column to move downwards, and the limiting sliding column and the limiting sliding chute slide upwards relatively; the pulley is attached to the outer wall of the inner column and rolls relatively, and the pulley and the limiting roller groove slide relatively downwards; when the hydraulic rod contracts to the bottom position, the embedded block is embedded into the embedded groove, the embedded block abuts against the inner embedded plate, and the inner sleeve plate is attached to the top surface of the inner column to fix the outer column and the inner column.
The utility model has the advantages that:
the utility model discloses go up and down the bell-type furnace through the form that sets up the hydraulic stem, support the furnace mantle through setting up four hydraulic stems of group. Every hydraulic stem is through being provided with the auxiliary stay of interior post and outer post to it is spacing to peg graft the outer wall of interior post and the inner wall of outer post, fixes the anti shear capacity who has strengthened the hydraulic stem between through interior post and the outer post, has improved the support stability when the hydraulic stem activity.
When the hydraulic rod of the utility model is raised to the high position, the bottom end of the outer column and the top end of the inner column still keep good connectivity, the structural strength of the middle end of the hydraulic rod is enhanced, the hydraulic rod is fixed in an auxiliary way, and the bearing is not easy to break and shake when the hydraulic rod is raised to the high position; when the hydraulic rod is lowered to a low position, the outer column and the inner column are completely spliced and overlapped, and the top end of the inner column and the top end of the outer column are embedded and fixed, so that the inner column, the outer column and hydraulic pressure are integrated, and the furnace cover is ensured to have complete stability when being lowered to a low-position working state; this device all has good stability under each operating condition.
Drawings
Figure 1 is the structural section view of the hydraulic rod of the utility model at the low position.
Fig. 2 is a structural section view of the hydraulic rod of the present invention at a high position.
Fig. 3 is a cross-sectional view of the present invention.
Fig. 4 is a schematic diagram of the top, middle and bottom structures of the inner column of the present invention.
Fig. 5 is a sectional view of the top, middle and bottom structures of the outer column of the present invention.
Fig. 6 is a partially enlarged view a of fig. 5.
List of reference numerals:
the device comprises an inner column 1, a limiting sliding column 1-1, a limiting sliding sleeve 1-2, a limiting roller groove 1-3, a roller sliding groove 1-3-1, a support sliding groove 1-3-2, an embedded plate 1-4, an embedded plate through hole 1-4-1 and an embedded groove 1-4-2;
a hydraulic bottom plate 2;
the device comprises an outer column 3, a limiting sliding plate 3-1, a limiting sliding groove 3-2, a pulley fixing piece 3-3, an inner sleeve plate 3-4, an inner embedded block 3-5 and an inner sleeve plate through hole 3-5-1;
a pulley 4;
a hydraulic top plate 5;
a hydraulic rod 6.
Detailed Description
For making the technical scheme of the utility model clear more clearly and definitely, it is right to combine the drawing below the utility model discloses further describe, any is right the utility model discloses technical scheme's technical characteristic carries out the scheme that equivalent replacement and conventional reasoning reachs and all falls into the utility model discloses protection scope. The fixed connection, the fixed arrangement and the fixed structure mentioned in the embodiment are all known technologies known to those skilled in the art, such as welding, screw connection, bolt-nut connection, riveting and the like.
The attached drawings show that the stable lifting device of the heat treatment bell-type furnace comprises an inner column 1, a hydraulic bottom plate 2, an outer column 3, a pulley 4, a hydraulic top plate 5 and a hydraulic rod 6;
the inner column 1 is of a hollow structure; the outer walls of two sides of the inner column 1 are provided with limiting sliding columns 1-1 which are symmetrically arranged, and the limiting sliding columns 1-1 on each side are arranged in the same direction as the inner column 1 and are fixedly connected with the outer wall of the inner column 1 to form an integrated structure; the outer walls of two ends of the inner column 1 are provided with limiting sliding sleeves 1-2, the number of the limiting sliding sleeves 1-2 arranged on the outer wall of the inner column 1 at each end is two, the limiting sliding sleeves are symmetrically arranged on two sides, each limiting sliding sleeve 1-2 is arranged in the same direction as the inner column 1, and each limiting sliding sleeve 1-2 is welded and fixed with the outer wall of the inner column 1 to form an integral structure; a limiting roller groove 1-3 is formed between the limiting sliding sleeves 1-2 at the two sides; the inner top surface of the inner column 1 is provided with inner panels 1-4, the inner panels are fixed with the inner wall of the inner column 1 through welding, the centers of the inner panels 1-4 are in a through hole shape to form inner panel through holes 1-4-1, and grooves are formed between the inner panels 1-4 and the inner column 1 to form inner embedded grooves 1-4-2; the hydraulic bottom plate 2 is arranged at the bottom end of the inner column 1, and the inner column 1 is fixed with the hydraulic bottom plate 2 through welding;
the outer column 3 is of a hollow structure; the inner walls of two sides of the outer column 3 are provided with limiting sliding plates 3-1, the inner wall of the outer column 3 on each side is provided with two limiting sliding plates 3-1 which are symmetrically arranged, the limiting sliding plates 3-1 on each side are arranged in the same direction as the outer column 3 and are welded and fixed with the inner wall of the outer column 3 to form an integral structure, and a limiting sliding groove 3-2 is formed between the limiting sliding plates 3-1 on two sides; pulley fixing pieces 3-3 are arranged on the bottom sides of the inner walls of the two ends of the outer column 3, and the number of the pulley fixing pieces 3-3 arranged at each end is two, and the pulley fixing pieces are welded and fixed with the inner wall of the outer column 3; the pulley 4 is arranged between the pulley fixing pieces 3-3 at two sides, and two ends of the pulley 4 rotate with the pulley fixing pieces 3-3 through a rotating shaft; an inner sleeve plate 3-4 is arranged at the inner top end of the outer column 3, the inner sleeve plate 3-4 is fixed with the inner wall of the outer column 3 through welding, the bottom surface of the inner sleeve plate 3-4 is of a convex structure to form an inner embedded block 3-5, an inner sleeve plate through hole 3-5-1 is arranged in the center of the inner sleeve plate 3-4, and the inner sleeve plate through hole 3-5-1 penetrates through the inner embedded plate 1-4; the outer column 3 is sleeved outside the inner column 1, the limiting sliding column 1-1 is embedded into the limiting sliding plate 3-1, and the pulley is embedded into the limiting roller groove 1-3, so that the longitudinal limiting fixation of the outer column 3 and the inner column 1 is realized; the hydraulic top plate 5 is arranged at the top end of the outer column 3, and the outer column 3 is fixed with the hydraulic top plate 5 through welding; the hydraulic rod 6 is arranged in the inner column 1, the bottom end of the hydraulic rod 6 is fixedly arranged with the hydraulic top plate 5 through a bolt, the top end of the hydraulic rod 6 is fixedly arranged with the hydraulic bottom plate 2 through a bolt, and the hydraulic rod 6 penetrates through the inner sleeve plate through hole 3-5-1 and the inner embedded plate through hole 1-4-1.
Further, the shape of the inner column 1 is a rectangular column structure, and the inner and outer corners of the inner column 1 are both in a round angle structure.
Furthermore, the section of each limiting sliding column 1-1 is of a rectangular structure, and the outer corners of two sides of each limiting sliding column 1-1 are of a round angle structure.
Furthermore, the section of each limiting sliding sleeve 1-2 is of an L-shaped structure.
Furthermore, the cross section of the limiting roller groove 1-3 is in a step shape and is in a structure with a narrow inner part and a wide outer part, and a roller sliding groove 1-3-1 and a bracket sliding groove 1-3-2 are respectively formed.
Further, the appearance of outer post 3 is the rectangle post structure, the inside and outside angle of outer post 3 all is fillet column structure, the inner wall size of outer post 3 is far greater than the outer wall size of outer post 3.
Furthermore, the shape, size and thickness of the embedded blocks 3-5 are adapted to the shape, size and depth of the embedded grooves 1-4-2.
Furthermore, the outer width of the two pulley fixing pieces 3-3 on each side is adapted to the groove width of the support sliding grooves 1-3-2.
Furthermore, the number of the pulleys 4 on each side is five, and the pulleys are arranged longitudinally; the width of each pulley 4 is adapted to the groove width of the roller sliding groove 1-3-1, and the pulleys 4 are attached to the outer wall of the inner column 1 to realize rotation. The structure principle of the utility model is that:
when a hydraulic rod of the device is stretched, the device is in a vertical state, a furnace body of the bell-type furnace is assembled with a hydraulic top plate, the hydraulic rod is stretched and pushes the hydraulic top plate and the furnace body of the bell-type furnace to move upwards, meanwhile, an outer column moves upwards, a limiting sliding column and a limiting sliding groove slide downwards relatively, and the inner column and the outer column are limited in a radial direction; the pulley is attached to the outer wall of the inner column and rolls relatively, the pulley fixing piece is embedded into the support sliding groove, the pulley is embedded into the roller sliding groove, the pulley and the limiting roller groove slide relatively upwards, and the inner column and the outer column are limited in the latitudinal direction; and stopping moving until the hydraulic rod extends to a proper height.
When the hydraulic rod of the device is contracted, the hydraulic rod drives the hydraulic top plate and the bell-type furnace body to move downwards and simultaneously drives the outer column to move downwards, and the limiting sliding column and the limiting sliding chute slide upwards relatively; the pulley is attached to the outer wall of the inner column and rolls relatively, and the pulley and the limiting roller groove slide relatively downwards; when the hydraulic rod contracts to the bottom position, the embedded block is embedded into the embedded groove, the embedded block abuts against the inner embedded plate, and the inner sleeve plate is attached to the top surface of the inner column to fix the outer column and the inner column.
The utility model has the advantages that:
the utility model discloses go up and down the bell-type furnace through the form that sets up the hydraulic stem, support the furnace mantle through setting up four hydraulic stems of group. Every hydraulic stem is through being provided with the auxiliary stay of interior post and outer post to it is spacing to peg graft the outer wall of interior post and the inner wall of outer post, fixes the anti shear capacity who has strengthened the hydraulic stem between through interior post and the outer post, has improved the support stability when the hydraulic stem activity.
When the hydraulic rod of the utility model is raised to the high position, the bottom end of the outer column and the top end of the inner column still keep good connectivity, the structural strength of the middle end of the hydraulic rod is enhanced, the hydraulic rod is fixed in an auxiliary way, and the bearing is not easy to break and shake when the hydraulic rod is raised to the high position; when the hydraulic rod is lowered to a low position, the outer column and the inner column are completely spliced and overlapped, and the top end of the inner column and the top end of the outer column are embedded and fixed, so that the inner column, the outer column and hydraulic pressure are integrated, and the furnace cover is ensured to have complete stability when being lowered to a low-position working state; this device all has good stability under each operating condition.

Claims (9)

1. A stable lifting device of a heat treatment bell-type furnace is characterized by comprising an inner column (1), a hydraulic bottom plate (2), an outer column (3), a pulley (4), a hydraulic top plate (5) and a hydraulic rod (6);
the inner column (1) is of a hollow structure; the outer walls of two sides of the inner column (1) are provided with limiting sliding columns (1-1) which are symmetrically arranged, the limiting sliding columns (1-1) on each side are arranged in the same direction as the inner column (1) and are fixedly connected with the outer wall of the inner column (1) to form an integrated structure; the outer walls of two ends of the inner column (1) are provided with limiting sliding sleeves (1-2), the number of the limiting sliding sleeves (1-2) arranged on the outer wall of each end of the inner column (1) is two, the limiting sliding sleeves are symmetrically arranged on two sides, each limiting sliding sleeve (1-2) and the inner column (1) are arranged in the same direction, and each limiting sliding sleeve (1-2) and the outer wall of the inner column (1) are welded and fixed to form an integrated structure; a limiting roller groove (1-3) is formed between the limiting sliding sleeves (1-2) on the two sides; an inner embedded plate (1-4) is arranged on the inner top surface of the inner column (1), the inner embedded plate is fixed with the inner wall of the inner column (1) through welding, the center of the inner embedded plate (1-4) is in a through hole shape to form an embedded plate through hole (1-4-1), and a groove shape is formed between the inner embedded plate (1-4) and the inner column (1) to form an embedded groove (1-4-2); the hydraulic bottom plate (2) is arranged at the bottom end of the inner column (1), and the inner column (1) is fixed with the hydraulic bottom plate (2) through welding;
the outer column (3) is of a hollow structure; the inner walls of two sides of the outer column (3) are provided with limiting sliding plates (3-1), the inner wall of each outer column (3) is provided with two limiting sliding plates (3-1) which are symmetrically arranged, the limiting sliding plates (3-1) of each side are arranged in the same direction as the outer column (3) and are welded and fixed with the inner wall of the outer column (3) to form an integral structure, and a limiting sliding groove (3-2) is formed between the limiting sliding plates (3-1) of two sides; pulley fixing pieces (3-3) are arranged on the bottom sides of the inner walls of the two ends of the outer column (3), and the number of the pulley fixing pieces (3-3) arranged at each end is two, and the pulley fixing pieces are welded and fixed with the inner wall of the outer column (3); the pulley (4) is arranged between the pulley fixing pieces (3-3) at two sides, and two ends of the pulley (4) rotate with the pulley fixing pieces (3-3) through a rotating shaft; an inner sleeve plate (3-4) is arranged at the inner top end of the outer column (3), the inner sleeve plate (3-4) is fixed with the inner wall of the outer column (3) through welding, the bottom surface of the inner sleeve plate (3-4) is of a convex structure to form an inner embedded block (3-5), an inner sleeve plate through hole (3-5-1) is arranged in the center of the inner sleeve plate (3-4), and the inner sleeve plate through hole (3-5-1) penetrates through the inner embedded plate (1-4); the outer column (3) is sleeved on the outer side of the inner column (1), the limiting sliding column (1-1) is embedded into the limiting sliding plate (3-1), and the pulley is embedded into the limiting roller groove (1-3), so that the outer column (3) and the inner column (1) are longitudinally limited and fixed; the hydraulic top plate (5) is arranged at the top end of the outer column (3), and the outer column (3) is fixed with the hydraulic top plate (5) through welding; the hydraulic rod (6) is arranged in the inner column (1), the bottom end of the hydraulic rod (6) is fixedly arranged with the hydraulic top plate (5) through a bolt, the top end of the hydraulic rod (6) is fixedly arranged with the hydraulic bottom plate (2) through a bolt, and the hydraulic rod (6) penetrates through the inner sleeve plate through hole (3-5-1) and the inner embedded plate through hole (1-4-1).
2. The stable elevating device of a heat treatment bell-type furnace of claim 1, characterized in that the outer shape of the inner column (1) is a rectangular column structure, and the inner and outer corners of the inner column (1) are round-corner structures.
3. The stable elevating device of a heat treatment bell furnace according to claim 1, wherein the cross section of each side of the position-limiting slide column (1-1) is rectangular, and the outer corners of both sides of the position-limiting slide column (1-1) are rounded.
4. The stable elevating device of a heat treatment bell-type furnace of claim 1, characterized in that the cross section of each of the limit sliding sleeves (1-2) is of an "L" shape.
5. The stable type elevating gear of a heat treatment bell type furnace according to claim 1, wherein the limiting roller groove (1-3) has a cross section of a step shape having a structure of narrow inside and wide outside to form a roller groove (1-3-1) and a support groove (1-3-2), respectively.
6. The stable elevating device of a heat treatment bell-type furnace of claim 1, characterized in that the outer shape of the outer column (3) is a rectangular column structure, the inner and outer corners of the outer column (3) are round-corner-shaped structures, and the inner wall size of the outer column (3) is much larger than the outer wall size of the outer column (3).
7. The stable elevating device of a heat treatment bell furnace according to claim 1, characterized in that the shape, size and thickness of the inner insert (3-5) are adapted to the shape, size and depth of the inner insert groove (1-4-2).
8. A stable lifting device for a heat treatment bell-type furnace according to claim 5, characterized in that the outer width of the two pulley fixing pieces (3-3) on each side is adapted to the groove width of the support runner (1-3-2).
9. The stable type elevating apparatus for a heat treatment bell type furnace according to claim 5, wherein the number of the pulleys (4) provided on each side is five, and they are arranged in a longitudinal direction; the width of each pulley (4) is adapted to the groove width of the roller sliding groove (1-3-1), and the pulleys (4) are attached to the outer wall of the inner column (1) to realize rotation.
CN202020545231.1U 2020-04-14 2020-04-14 Stable lifting device of heat treatment bell-type furnace Active CN213578703U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020545231.1U CN213578703U (en) 2020-04-14 2020-04-14 Stable lifting device of heat treatment bell-type furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020545231.1U CN213578703U (en) 2020-04-14 2020-04-14 Stable lifting device of heat treatment bell-type furnace

Publications (1)

Publication Number Publication Date
CN213578703U true CN213578703U (en) 2021-06-29

Family

ID=76520931

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020545231.1U Active CN213578703U (en) 2020-04-14 2020-04-14 Stable lifting device of heat treatment bell-type furnace

Country Status (1)

Country Link
CN (1) CN213578703U (en)

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