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CN-224212313-U - Three-dimensional hoisting mechanism of liquid nitrogen tank

CN224212313UCN 224212313 UCN224212313 UCN 224212313UCN-224212313-U

Abstract

The utility model provides a three-dimensional hoisting mechanism of a liquid nitrogen tank, which comprises a stand column arranged on the liquid nitrogen tank, wherein a horizontal suspension arm is rotatably arranged at the top of the stand column, a lifting hook for hooking a freezing storage rack is arranged below the horizontal suspension arm, and the lifting hook can be driven to move relatively along the length direction of the horizontal suspension arm and the axis direction of the stand column. The liquid nitrogen tank top is provided with the locating plate, and the locating plate top is fixed with the inserted bar, and stand bottom has seted up with inserted bar complex jack. The upright post is provided with a positioning component which is used for locking the relative position between the inserted link and the jack. According to the utility model, the upright post can be conveniently and efficiently assembled and disassembled on the liquid nitrogen tank through the additionally arranged positioning plate, the positioning assembly and the like, so that the whole hoisting mechanism is convenient to maintain.

Inventors

  • FANG XIUJU
  • JIANG HAO
  • ZHANG LI

Assignees

  • 中科美菱低温科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250506

Claims (8)

  1. 1. The three-dimensional hoisting mechanism of the liquid nitrogen tank is characterized by comprising an upright post (1) arranged on the liquid nitrogen tank, wherein the top of the upright post (1) is rotatably provided with a horizontal suspension arm (2), a lifting hook (3) for hooking and hoisting a freezing storage rack (100) is arranged below the horizontal suspension arm (2), and the lifting hook (3) can be driven to move relatively along the length direction of the horizontal suspension arm (2) and the axial direction of the upright post (1); A positioning plate (17) is arranged at the top of the liquid nitrogen tank, an inserting rod (19) is fixed at the top of the positioning plate (17), and a jack (18) matched with the inserting rod (19) is formed at the bottom of the upright post (1); The upright post (1) is provided with a positioning component which is used for locking the relative position between the inserted link (19) and the jack (18).
  2. 2. The three-dimensional hoisting mechanism of the liquid nitrogen tank of claim 1, wherein the positioning assembly comprises a clamping rod (23) which is radially and elastically inserted on the upright post (1), a clamping hole (24) which is matched with the centripetal end of the clamping rod (23) is formed in the outer wall of the inserting rod (19), a first sliding groove (20) is axially formed in the outer wall of the upright post (1), the centrifugal end of the clamping rod (23) is positioned in the first sliding groove (20), a first sliding block (21) which is positioned above the clamping rod (23) is arranged in the first sliding groove (20) in a sliding manner, and a chute (22) which is in sliding contact press fit with the centrifugal end of the clamping rod (23) is arranged on one side of the first sliding block (21) facing the clamping rod (23); The first sliding block (21) is driven to move towards the clamping rod (23) in the first sliding groove (20), so that the chute (22) slides to press the centrifugal end of the clamping rod (23), and the centrifugal end of the clamping rod (23) is forced to be clamped into the clamping hole (24).
  3. 3. The three-dimensional hoisting mechanism of the liquid nitrogen tank according to claim 2, characterized in that a second chute (32) for the clamping rod (23) to penetrate is arranged on the inner wall of the upright post (1), a second sliding block (33) is arranged in the second chute (32), the second sliding block (33) is sleeved and fixed on the outer side of the clamping rod (23), and a spring is sleeved and arranged on the outer side of the clamping rod (23).
  4. 4. The three-dimensional hoisting mechanism of the liquid nitrogen tank according to claim 2, characterized in that a connecting block (25) is arranged at the top of the first sliding block (21), a limiting block (27) parallel to the clamping rod (23) is rotatably arranged in the first sliding groove (20), the limiting block (27) is positioned above the first sliding block (21), and a limiting groove (26) is formed at the top of the connecting block (25); When the first sliding block (21) does not touch the clamping rod (23), the limiting block (27) is inserted into the limiting groove (26) in a sliding mode, and the width of one side, facing the first sliding block (21), of the limiting block (27) is smaller than or equal to the length of a notch of the limiting groove (26); When the first sliding block (21) touches the clamping rod (23) so that the clamping rod (23) is clamped into the clamping hole (24), the limiting block (27) is rotated, and the width of one side of the limiting block (27) facing the first sliding block (21) is larger than the notch length of the limiting groove (26).
  5. 5. The three-dimensional hoisting mechanism of the liquid nitrogen tank, as claimed in claim 4, is characterized in that one end of a limiting block (27) is fixedly provided with a damping rotating rod (28) parallel to the clamping rod (23), one end of the damping rotating rod (28) is rotatably arranged on the wall of the first chute (20), the other end of the limiting block (27) is fixedly provided with a shifting block (29), and the maximum rotation angle of the damping rotating rod (28) is ninety degrees.
  6. 6. The three-dimensional hoisting mechanism of the liquid nitrogen tank according to claim 1, wherein a third motor (16) is arranged at a position, close to the top, inside the upright post (1), and an output shaft of the third motor (16) is connected with one side, close to the upright post (1), of the bottom of the horizontal suspension arm (2).
  7. 7. The three-dimensional hoisting mechanism of a liquid nitrogen tank according to claim 1, characterized in that a track groove (6) parallel to the length direction of the horizontal boom (2) is formed in the horizontal boom (2), a track block (5) is slidably arranged in the track groove (6), a carrying platform (4) is arranged at the top of the track block (5), a wire wheel (12) is arranged at the top of the carrying platform (4), a rope (14) is wound on the wire wheel (12), the free end of the rope (14) is connected with the lifting hook (3), and a through hole (15) through which the rope (14) can pass and move along the length direction of the horizontal boom (2) is formed in the bottom of the horizontal boom (2).
  8. 8. The three-dimensional hoisting mechanism of the liquid nitrogen tank according to claim 7, characterized in that the two ends of the inner side of the horizontal suspension arm (2) are provided with belt wheels (7), a tensioned belt (8) is wound between the two belt wheels (7), a connecting plate (10) is fixed on the side of the carrying platform (4), and the bottom of the connecting plate (10) is fixed on the belt body of the belt (8); The horizontal suspension arm (2) is internally provided with a first motor (9), an output shaft of the first motor (9) is connected with the rotation center of one of the belt wheels (7), the top of the carrying platform (4) is provided with a second motor (11), and the output shaft of the second motor (11) is connected with the rotation center of the wire wheel (12).

Description

Three-dimensional hoisting mechanism of liquid nitrogen tank Technical Field The utility model relates to the technical field of lifting equipment, in particular to a three-dimensional lifting mechanism of a liquid nitrogen tank. Background The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art. In the practical application scene of the liquid nitrogen tank, frequent and accurate hoisting of the sample is a key operation. Currently, many liquid nitrogen tanks rely on simpler ways of lifting samples. And the small lifting arm is arranged on the tank top, but the structure can only move in a limited way in a two-dimensional plane, so that the omnibearing and flexible three-dimensional operation cannot be realized. The related art discloses the utility model patent of publication number CN219222083U, and it discloses a frozen stock lifting device, including stand subassembly and rotationally connect in the horizontal jib subassembly on the top of stand subassembly, horizontal jib subassembly includes horizontal jib, sliding connection has lifting unit on the horizontal jib, lifting unit can be driven along the reciprocal rectilinear motion of horizontal jib's length direction, and lifting unit includes the lifting hook that can be lifted, and the lifting hook is used for colluding the frozen stock. Through the lifting hook that can be driven among the reciprocal rectilinear movement's the lifting unit lifting hook and hang the cryopreservation frame and realize high position and adjustment of horizontal position, through rotatable horizontal davit subassembly realization cryopreservation frame inside and outside the liquid nitrogen jar to realize the mechanized access of cryopreservation frame and upper sample, effectively avoid adopting the manual mode to access the easy tired phenomenon emergence that causes cryopreservation frame and sample damage of cryopreservation frame among the prior art, effectively stop operating personnel and be the liquid nitrogen jar frostbite phenomenon emergence of low temperature. However, the above-mentioned patent technology has the following drawbacks: the stand subassembly is mostly installed fixedly through the bolt at liquid nitrogen tank top, when needs are maintained lifting device, has the inconvenient problem of dismouting. Disclosure of utility model The utility model mainly aims to provide a three-dimensional hoisting mechanism for a liquid nitrogen tank. The technical scheme is that the liquid nitrogen tank three-dimensional hoisting mechanism comprises a stand column arranged on the liquid nitrogen tank, wherein a horizontal suspension arm is rotatably arranged at the top of the stand column, a lifting hook for hooking the freezing storage rack is arranged below the horizontal suspension arm, and the lifting hook can be driven to move relatively along the length direction of the horizontal suspension arm and the axis direction of the stand column; the top of the liquid nitrogen tank is provided with a positioning plate, the top of the positioning plate is fixedly provided with an inserting rod, and the bottom of the upright post is provided with a jack matched with the inserting rod; The upright post is provided with a positioning component which is used for locking the relative position between the inserted link and the jack. The positioning assembly comprises a clamping rod which is radially and elastically inserted on the upright post, a clamping hole matched with the centripetal end of the clamping rod is formed in the outer wall of the inserting rod, a first sliding groove is axially formed in the outer wall of the upright post, and the centrifugal end of the clamping rod is positioned in the first sliding groove; The first sliding block is driven to move towards the clamping rod in the first sliding groove, so that the chute slides to touch and press the centrifugal end of the clamping rod, and the centrifugal end of the clamping rod is forced to be clamped into the clamping hole. Furthermore, a second sliding groove for the clamping rod to penetrate is formed in the inner wall of the upright post, a second sliding block is arranged in the second sliding groove and is sleeved and fixed on the outer side of the clamping rod, and a spring is sleeved and arranged on the outer side of the clamping rod. Further, a connecting block is arranged at the top of the first sliding block, a limiting block parallel to the clamping rod is rotatably arranged in the first sliding groove, the limiting block is positioned above the first sliding block, and a limiting groove is formed in the top of the connecting block; When the first sliding block does not touch the clamping rod, the limiting block is inserted into the limiting groove in a sliding manner, and the width of one side of the limiting block facing the first sliding block is smaller than or equal to the length of the notch of the lim