CN219906708U - Filter element grabbing tool - Google Patents

Abstract

The utility model discloses a filter element grabbing tool, and belongs to the field of special auxiliary equipment. Comprises an upper base, a lower base, a combined lifting hook, a group of symmetrically arranged connecting rods, a group of symmetrically arranged connecting plates and a lifting hook opening and closing adjusting mechanism; the lifting hook opening and closing adjusting mechanism is fixedly connected with the upper base, and the lower part of the lifting hook opening and closing adjusting mechanism can be inserted into the lower base and limited; when the lower part of the lifting hook opening and closing adjusting mechanism is inserted into the lower base and limited, the combined lifting hook is closed; when the lower part of the lifting hook opening and closing adjusting mechanism is separated from the lower base, the combined lifting hook is opened. The whole operation process of the filter element grabbing tool is convenient and flexible, and the filter element grabbing tool does not need an operator to independently apply force to clamp and is safe; the whole filter element grabbing tool and the filter element are always in the same straight line in the operation and use process, so that the filter element grabbing tool is stable and reliable.

Description

Filter element grabbing tool

Technical Field

The utility model relates to a filter element replacement tool, in particular to a filter element grabbing tool, and belongs to the field of special auxiliary equipment.

Background

In nuclear power plant radioactive water treatment systems, water filter cartridges are mainly used to remove corrosion products and suspended solid particulates present in the water in colloidal form, and are important devices to ensure stable operation of the power plant. The filter element is limited by service life and needs to be replaced periodically. When the filter element is replaced, the filter element which reaches the service life needs to be taken out and then put into a new filter element. Because the filter element contains a large amount of radioactive components in the use process, the exposure time is reduced and the distance between the filter element and an operator is enlarged as much as possible in the filter element replacement process, so that the safety of the whole replacement process is ensured.

The utility model discloses a special tool for quickly replacing a filter element, which comprises a claw grabbing head, a grabbing head locking hinge, a handle and a pull rod, wherein the lower end of the pull rod is connected with a connecting rod, the lower end of the connecting rod is provided with the grabbing head locking hinge, the upper end of the grabbing head locking hinge is movably connected with the connecting rod, the middle part of the grabbing head locking hinge is hinged with the connecting rod, and the lower end of the grabbing head locking hinge is fixedly connected with the claw grabbing head; the handle is arranged on the connecting rod and moves up and down along the connecting rod, the handle is fixedly connected with a transmission shaft acting on the claw grabbing head, a bulge is arranged on the transmission shaft at a position corresponding to the upper end position of the grabbing head locking hinge, and the bulge acts on the upper end of the grabbing head locking hinge and enables the grabbing head locking hinge to rotate along the hinging position of the middle part of the grabbing head locking hinge. The whole operation of the special tool is quick, simple and convenient and saves labor, thereby improving the working efficiency and reducing the exposure of operators in severe environments. However, in the use process, the pull rod is pulled to grasp and lift by the manual force application handle, when an operator is far away from the filter element, the pull rod needs to have enough length, the extension of the length of the pull rod also causes the increase of the dead weight of the tool, and the load of the operator is definitely increased; meanwhile, an operator extending the length of the pull rod cannot ensure that the tool can quickly grab the interface of the filter element, so that the exposure time of the waste filter element is prolonged. In addition, when this instrument is carrying out personnel's operation, operating personnel can't guarantee that instrument and filter core interface are on same straight line, lead to grabbing the head wearing and tearing seriously to greatly reduced snatchs reliability and stability.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a filter element replacement tool which is flexible and convenient to operate and stable and reliable to grasp.

In order to solve the technical problems, the filter element grabbing tool provided by the utility model comprises an upper base, a lower base, a combined lifting hook, a group of symmetrically arranged connecting rods, a group of symmetrically arranged connecting plates and a lifting hook opening and closing adjusting mechanism;

the middle part of the combined lifting hook is hinged with the lower base, the upper part of the combined lifting hook is respectively hinged with the lower part of the connecting rod, and the upper parts of the connecting rods are respectively movably connected with the upper base;

the lower part of the connecting plate is fixedly connected with the lower base, and the upper part of the connecting plate is movably connected with the upper base;

the upper part of the connecting rod and the upper part of the connecting plate are respectively provided with an opening for the upper base to slide up and down;

the lifting hook opening and closing adjusting mechanism is fixedly connected with the upper base, and the lower part of the lifting hook opening and closing adjusting mechanism can be inserted into the lower base and limited;

when the lower part of the lifting hook opening and closing adjusting mechanism is inserted into the lower base and limited, the combined lifting hook is closed;

when the lower part of the lifting hook opening and closing adjusting mechanism is separated from the lower base, the combined lifting hook is opened.

In the utility model, the lifting hook opening and closing adjusting mechanism comprises a center positioning guide rod and a guide rod rotating mechanism, wherein the center positioning guide rod is connected with the guide rod rotating mechanism, and the guide rod rotating mechanism is connected with the upper base;

the guide rod rotating mechanism returns to the original position every time when descending and ascending, and can drive the center positioning guide rod to rotate by 90 degrees and position;

the lower part of the central positioning guide rod is provided with a limiting block which can be clamped into the lower base and limit;

when the guide rod rotating mechanism descends, the limiting block enters the lower base, and the guide rod rotating mechanism ascends to center the guide rod to rotate by 90 degrees to clamp the limiting block into the lower base;

when the guide rod rotating mechanism descends again, the guide rod rotating mechanism drives the center positioning guide rod to rotate 90 degrees, and the guide rod rotating mechanism ascends to drive the limiting block to be separated from the lower base.

In the utility model, the guide rod rotating mechanism comprises an upper clutch gear and a lower clutch gear, wherein the upper clutch gear and the lower clutch gear are correspondingly provided with four ratchets, and tooth tips of the upper clutch gear and the lower clutch gear are opposite;

the positions of the upper clutch gear and the lower clutch gear are relatively fixed;

the lower part of the center positioning guide rod passes through the lower clutch gear, and the upper part of the center positioning guide rod is positioned between the upper clutch gear and the lower clutch gear;

four guiding limit teeth which are matched with the ratchet teeth on the upper clutch gear and the lower clutch gear are arranged on the central positioning guide rod between the upper clutch gear and the lower clutch gear;

after the guiding limit teeth are contacted with the ratchets on the upper clutch gear, the guiding limit teeth gradually slide into the teeth of the upper clutch gear, and the center positioning guide rod rotates for 90 degrees;

after the guiding limit teeth are contacted with the ratchets on the lower clutch gear, the guiding limit teeth gradually slide into the teeth of the lower clutch gear, and the center positioning guide rod is positioned.

In the utility model, the guide rod rotating mechanism further comprises a guide cylinder, the upper clutch gear and the lower clutch gear are both arranged in the guide cylinder, and the position of the lower clutch gear can be adjusted and positioned.

In the utility model, a thread groove is arranged in the guide cylinder, and threads matched with the thread groove in the guide cylinder are arranged on the periphery of the upper clutch gear and the lower clutch gear;

a slotted hole is formed between the partial threads, and a limiting screw hole is formed in the position where the slotted hole is aligned.

In the utility model, a plurality of slotted holes are uniformly distributed along the circumferential direction of the lower clutch gear.

In the utility model, the outer side of the lifting hook opening and closing adjusting mechanism is provided with the guide positioning sleeve, and the guide positioning sleeve is fixedly connected with the connecting plate.

In the utility model, a plane adjusting plate is arranged at the bottom of the lower base.

In the utility model, the combined lifting hook comprises a first lifting hook and a second lifting hook which are similar to an L-shaped structure, are arranged in opposite directions, and are hinged at the middle part.

In the utility model, the first lifting hook comprises two hook teeth, a gap for accommodating a second lifting hook is formed between the two hook teeth, and the second lifting hook is arranged in the gap and hinged with the first lifting hook.

The utility model has the beneficial effects that: (1) After the combined lifting hook in a closed state is completely inserted into an opening on the filter element, the lifting hook opening and closing adjusting mechanism is lifted upwards, so that the lower part of the lifting hook opening and closing adjusting mechanism is separated from the lower base; the lifting hook opening and closing adjusting mechanism drives the upper part of the combined lifting hook to synchronously move upwards through the connecting rod, and opens the combined lifting hook and grabs the filter element; when the filter element reaches a specified position, the lifting hook opening and closing adjusting mechanism descends under the action of dead weight, the lower part of the lifting hook opening and closing adjusting mechanism is inserted into the lower base and limited, meanwhile, the connecting rod descends to drive the combined lifting hook to be closed, and when the lifting hook opening and closing adjusting mechanism is lifted up, the lower part of the lifting hook opening and closing adjusting mechanism is limited in the lower base, the lifting hook opening and closing adjusting mechanism cannot independently ascend and drive the connecting rod, and the combined lifting hook keeps a closed state; the whole filter element grabbing tool and the filter element are always on the same straight line in the operation and use process, so that the filter element grabbing tool is stable and reliable; (2) The central positioning guide rod is controlled by the guide rod rotating mechanism to rotate by 90 degrees alternately, so that the separation of the central positioning guide rod and the lower base is realized, and the opening and closing of the combined lifting hook are controlled, so that the combined lifting hook is simple, reliable and good in stability; (3) The guide limiting teeth on the guide rod rotating mechanism can circularly and alternately realize the rotation of the central positioning guide rod at a fixed angle under the condition of no other power assistance by being matched with the upper clutch gear and the lower clutch gear, so that the guide rod rotating mechanism is simple and efficient; (4) The position of the lower clutch gear can be adjusted and positioned, so that the matching position between the central positioning guide rod and the lower base can be quickly adjusted, and the assembly is more convenient and quick; (5) Through the slotted hole and the threads, the lower clutch gear can freely rotate on the guide cylinder, and meanwhile, the accurate positioning of the lower clutch gear can be ensured; (6) The slotted holes are distributed uniformly along the circumferential direction of the lower clutch gear, so that the reliability and stability of the positioning of the lower clutch gear on the guide cylinder can be further ensured; (7) The arrangement of the guide positioning sleeve can ensure that the operation of the lifting hook opening and closing adjusting mechanism is more stable, and the integral strength of the filter element grabbing tool is improved; (8) The plane adjusting plate not only ensures the stability of the filter element grabbing tool after the combined lifting hook is inserted into the filter element, but also can control the opening amplitude of the combined lifting hook through the size selection of the plane adjusting plate so as to adapt to filter elements with different specifications; (9) The second lifting hook adopts double hook design and is articulated mutually with first lifting hook, can form three-jaw to the filter core like this and snatch, guarantees to snatch more reliable and stable.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a cartridge gripping tool;

FIG. 2 is a front view of a cartridge gripping tool configuration;

FIG. 3 is a schematic view of the upper base structure;

FIG. 4 shows a schematic view of the lower base structure, (a) a first schematic view, (b) a second schematic view;

FIG. 5 shows a schematic diagram of a guide structure, (a) a first schematic diagram, and (b) a second schematic diagram;

FIG. 6 is a schematic diagram of an upper clutch gear, (a) a first schematic diagram, and (b) a second schematic diagram;

FIG. 7 is a schematic diagram of a lower clutch gear configuration, (a) schematic diagram I, (b) schematic diagram II;

FIG. 8 is a schematic view of the structure of the centering guide bar, (a) a connection state diagram, (b) an explosion diagram;

FIG. 9 is a schematic view of a combined hook structure, (a) a first hook structure, (b) a second hook structure, and (c) a combined state diagram;

FIG. 10 is a schematic diagram of the assembly of the centering guide bar, upper clutch gear and lower clutch gear;

FIG. 11 is a schematic diagram of the cooperation of the centering guide bar, upper clutch gear, lower clutch gear and lower base;

FIG. 12 is a schematic view of a planar adjusting plate structure;

FIG. 13 is a schematic view of another embodiment cartridge gripping tool;

FIG. 14 is a front view of another embodiment cartridge gripping tool configuration;

fig. 15 is a schematic view of a cartridge gripping tool engaged with a cartridge.

In the figure: the device comprises an upper base 1, a lower base 2, a first lifting hook 3, a second lifting hook 4, a connecting rod 5, a connecting plate 6, a central positioning guide rod 7, an upper clutch gear 8, a lower clutch gear 9, a guide cylinder 10, a guide positioning sleeve 11, a connecting block 12, a slotted hole 13, an adjusting hole 14, a ratchet 15, a waist hole 16, a plane adjusting plate 17, a through hole 18, a connecting rod connecting part 19, a connecting plate connecting part 20, a first through groove 2-1, a second through groove 2-2, an upper guide rod 7-1, a lower guide rod 7-2, a guide limiting tooth 7-3, a limiting block 7-4 and a bulge 7-5.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Some embodiments of the present utility model are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1 and 2, the filter element gripping tool of the present embodiment includes an upper base 1, a lower base 2, a first hook 3, a second hook 4, a link 5, a link plate 6, a centering guide bar 7, an upper clutch gear 8, a lower clutch gear 9, a guide cylinder 10, and a guide positioning sleeve 11.

As shown in fig. 3, the upper base 1 has a square structure, a connection block 12 with an opening is provided at the top of the upper base 1, and the connection block 12 can be connected with other connection components such as a steel wire rope, a U-shaped hanging buckle, etc. The bottom of the upper base 1 is provided with a thread groove for connecting with the guide cylinder 10.

As shown in fig. 5, the outer circumference of the guide cylinder 10 is provided with a screw thread connected to the bottom of the upper base 1. The inner periphery of the guide cylinder 10 is provided with an upper thread groove and a lower thread groove which are used for being connected with the upper clutch gear 8 and the lower clutch gear 9. The upper clutch gear 8 is arranged and can be fixed on the upper part of the guide cylinder 10, the lower clutch gear 9 is arranged in the guide cylinder 10, and the position can be adjusted and positioned up and down along the guide cylinder 10.

As shown in fig. 6, the upper clutch gear 8 has a hollow ring structure, and threads matching with the internal thread grooves of the guide cylinder 10 are provided on the outer circumference of the upper clutch gear 8. The thread of the upper clutch gear 8 is provided with a symmetrically arranged slotted hole 13, the top of the upper clutch gear 8 is provided with a threaded hole corresponding to the slotted hole 13, and after the upper clutch gear 8 is adjusted to a proper position, the threaded hole is screwed into a screw to fix the upper clutch gear 8 so as to prevent the upper clutch gear 8 from rotating in the guide cylinder 10 in the use process.

Two adjusting holes 14 are symmetrically arranged at the top of the upper clutch gear 8, and a tool for inserting the adjusting holes 14 into the matching is used for adjusting the specific position of the upper clutch gear 8 in the guide cylinder 10 in a rotating way.

Four ratchets 15 are arranged at the lower part of the upper clutch gear 8 along the circumferential direction, and teeth are arranged between the adjacent ratchets 15.

As shown in fig. 7, the structure of the lower clutch gear 9 is similar to that of the upper clutch gear 8. The outer periphery of the lower clutch gear 9 is also provided with threads which are matched with the internal thread grooves of the guide cylinder 10. The thread of the lower clutch gear 9 is also provided with a symmetrically arranged slotted hole 13, and the bottom of the lower clutch gear 9 is provided with a threaded hole corresponding to the slotted hole 13. The function of the threaded holes and slots 13 is the same as the function of the threaded holes and slots 13 in the upper clutch gear 8.

Two adjusting holes 14 are symmetrically arranged at the bottom of the lower clutch gear 9, and a tool for inserting the adjusting holes 14 into the matching is used for adjusting the specific position of the lower clutch gear 9 in the guide cylinder 10 in a rotating way.

Four ratchets 15 are arranged on the upper part of the lower clutch gear 9 along the circumferential direction, and teeth are arranged between the adjacent ratchets 15. The structure of the ratchet teeth 15 on the lower clutch gear 9 is slightly different from the structure of the ratchet teeth 15 on the upper clutch gear 8, and the ratchet teeth 15 on the lower clutch gear 9 are relatively short points.

When the assembly is completed, the top of the ratchet 15 of the lower clutch gear 9 is opposite to the bottom of the ratchet 15 of the upper clutch gear 8 in sequence.

The whole central positioning guide rod 7 is in a circular strip shape, and the diameter of the central positioning guide rod 7 is slightly smaller than the inner diameters of the upper clutch gear 8 and the upper hollow part of the upper clutch gear 8 so as to ensure that the central positioning guide rod 7 can slide up and down freely.

In the present embodiment, as shown in fig. 8, the centering guide bar 7 is divided into upper and lower parts, i.e., an upper guide bar 7-1 and a lower guide bar 7-2. The bottom of the upper guide rod 7-1 is provided with a threaded hole, the top of the lower guide rod 7-2 is provided with threads matched with the threaded hole at the bottom of the upper guide rod 7-1, and the upper guide rod 7-1 and the lower guide rod 7-2 are fixedly connected through a thread pair.

4 guiding limit teeth 7-3 are arranged in the middle of the upper guide rod 7-1 along the circumferential direction, the structure of the guiding limit teeth 7-3 is matched with the inter-tooth structure of the upper clutch gear 8 and the lower clutch gear 9, and the guiding limit teeth 7-3 are positioned between the upper clutch gear 8 and the lower clutch gear 9 as shown in fig. 10.

When the central positioning guide rod 7 goes up, after the top of the guiding limit tooth 7-3 contacts with the lower end of the upper ratchet 15 of the upper clutch gear 8, the guiding limit tooth 7-3 gradually slides into the tooth space of the upper ratchet 15 of the upper clutch gear 8, and the central positioning guide rod 7 rotates by 90 degrees. When the center positioning guide rod 7 descends, the lower part of the guide limiting tooth 7-3 automatically slides into the tooth space of the ratchet 15 on the lower clutch gear 9 under the action of dead weight, and the lower clutch gear 9 limits the rotation of the center positioning guide rod 7, so that the positioning of the center positioning guide rod 7 is realized.

The bottom of the lower guide rod 7-2 is provided with a limiting block 7-4, the bottom of the limiting block 7-4 is provided with a bulge 7-5, and the limiting block 7-4 and the bulge 7-5 are subjected to round corner treatment. The protrusion 7-5 is used to facilitate the lifting of the entire centering guide bar 7.

As shown in fig. 4, the upper half of the lower base 2 has a square structure, and the lower half has an inverted trapezoidal structure. In the square structure part, a first through groove 2-1 is formed. The top of the first through groove 2-1 is opened, two steps extending inwards and opposite to each other are formed on two sides of the first through groove, and the gap between the two steps is slightly larger than the width of the limiting block 7-4 on the central positioning guide rod 7 so as to ensure the normal in-out of the limiting block 7-4.

The width and the length of the first through groove 2-1 are both larger than the length of the limiting block 7-4, so that the limiting block 7-4 can rotate freely in the first through groove 2-1. The height of the first through groove 2-1 is slightly larger than the distance between the top surface of the limiting block 7-4 and the bottom surface of the protrusion 7-5.

The bottom of the inverted trapezoid structure of the lower half part of the lower base 2 is provided with a second through groove 2-2, the second through groove 2-2 is crossed with the first through groove 2-1 in 90 degrees, the bottom of the second through groove 2-2 is of an opening structure, and the width of the second through groove 2-2 is slightly larger than the thickness of the first lifting hook 3 and the second lifting hook 4. The base bodies on two sides of the second through groove 2-2 are provided with holes for hinging the lower base 2 with the first lifting hook 3 and the second lifting hook 4.

As shown in fig. 9, the first hook 3 is similar to an L-shaped structure, one end of the first hook is provided with a hook, and the other end and the middle bending part are respectively provided with holes.

The second hook 4 is also similar to an L-shaped structure, one end of the second hook is provided with a hook, and the other end and the middle bending part are respectively provided with holes. The second hook 4 is provided with two hooks, the gap between the two hooks being slightly larger than the thickness of the first hook 3.

During assembly, the first lifting hook 3 and the second lifting hook 4 are arranged in opposite directions, and the middle part of the first lifting hook is hinged with the lower base 2 through a rotating shaft. The first lifting hook 3 and the second lifting hook 4 can rotate relative to the lower base 2 along the axial direction of the second through groove 2-2, so that the stability in the use process is ensured. The first lifting hook 3 and the second lifting hook 4 form a three-jaw structure when being unfolded outwards, and can be closed inwards to form a whole.

As shown in fig. 1 and 9, the openings at the distal ends of the first hook 3 and the second hook 4 are hinged to the lower parts of two symmetrical connecting rods 5 through rotating shafts, and the upper parts of the connecting rods 5 are provided with long-strip waist holes 16 along the length direction. The waist holes 16 at the upper parts of the two connecting rods 5 are respectively hinged with the connecting rod connecting parts 19 at the two opposite sides of the upper base 1 through rotating shafts, and the rotating shafts can slide relative to the waist holes 16.

As shown in fig. 1 and 12, a plane adjusting plate 17 is fixedly connected to the bottom of the lower base 2, and a through hole 18 is formed above the plane adjusting plate 17. The hooks of the first lifting hook 3 and the second lifting hook 4 penetrate out of the plane adjusting plate 17, and the maximum opening amplitude of the first lifting hook 3 and the second lifting hook 4 can be controlled by adjusting the size of the through hole 18 so as to adapt to the grabbing of filter elements with different specifications. Meanwhile, when the first lifting hook 3 and the second lifting hook 4 are inserted into the filter element rear plane adjusting plate 17, the contact between the whole filter element grabbing tool and the filter element to be grabbed is more stable.

Two opposite sides (two end surfaces of the first through groove 2-1) of the upper half part of the lower base 2 are respectively connected with a connecting plate 6, and the two connecting plates 6 are symmetrically arranged. Like the connecting rod 5, the upper parts of the two connecting plates 6 are provided with long strip waist holes 16 along the length direction. The upper base 1 is provided with a connecting plate connecting part 20 on opposite sides thereof. The two connecting plate connecting parts 20 and the two connecting rod connecting parts 19 are symmetrically arranged on four sides of the upper base 1 respectively. Wherein, the connecting plate connecting part 20 is connected with the upper base 1 through a screw pair, and the two connecting rod connecting parts 19 are welded with the upper base 1. The connecting plate connecting part 20 is inserted into the waist hole 16 at the upper part of the connecting plate 6 and is fixed by a gasket and a bolt. Thus, the upper base 1 can slide up and down along the waist hole 16 on the upper part of the connecting rod 5 and the waist hole 16 on the upper part of the connecting plate 6.

As shown in fig. 1, a guiding and positioning sleeve 11 is sleeved outside the guiding cylinder 10, and two sides of the guiding and positioning sleeve 11 are respectively connected with the two connecting plates 6. The guide cylinder 10 can slide up and down along the guide positioning sleeve 11. The guide positioning sleeve 11 can ensure the stability of the up-and-down running of the center positioning guide rod 7 while improving the strength of the whole filter element grabbing tool.

The assembly process of this embodiment is as follows:

an upper guide rod 7-1 of the central positioning guide rod 7 passes through a lower clutch gear 9 to be connected with a lower guide rod 7-2;

penetrating the center positioning guide rod 7 into the guide cylinder 10, rotating the upper clutch gear 8 in the guide cylinder 10 to a proper position, screwing a screw into a screw hole for fixing, and connecting the guide cylinder 10 with the upper base 1 through a screw pair;

the lower clutch gear 9 is rotated to a proper position in the guide cylinder 10 and then screwed into a screw hole to be fixed;

the guiding locating sleeve 11 is sleeved on the guiding cylinder 10;

the first lifting hook 3 and the second lifting hook 4 are arranged at the second through groove 2-2 in opposite directions and are connected with the lower base 2 through a rotating shaft, and the lower parts of the first lifting hook 3 and the second lifting hook 4 penetrate through a through hole 18 on the plane adjusting plate;

inserting the lower part of the center positioning guide rod 7 into the first through groove 2-1 on the lower base 2, and positioning a limiting block on the center positioning guide rod 7 in the first through groove 2-1 after insertion;

the lower parts of the two connecting rods 5 are respectively connected with the open holes at the distal ends of the first lifting hook 3 and the second lifting hook 4 through rotating shafts, and are matched with gaskets and bolts for assistance; the upper waist holes 16 of the two connecting rods 5 are inserted into the connecting rod connecting parts 19 on the two opposite sides of the upper base 1, and are inserted into the rotating shafts and matched with gaskets and bolts to realize connection;

the bottoms of the two connecting plates 6 are respectively and fixedly connected with the lower base 2 through screws, the upper waist holes 16 of the two connecting plates 6 are inserted into the connecting plate connecting parts 20 on the two opposite sides of the upper base 1, and then gaskets are sleeved in the connecting plate connecting parts 20 and are matched with bolts to realize connection; the middle parts of the two connecting plates 6 are fixedly connected with the guide positioning sleeve 11 through screws so as to finish assembly.

After the assembly is completed, it is required to ensure that the first through grooves 2-1 on the lower base 2 can alternately limit/release the limiting blocks on the centering guide rod 7 after the centering guide rod 7 rotates for 90 degrees. If this is not possible, the position of the lower clutch gear 9 in the guide cylinder 10 needs to be adjusted until the aforementioned conditions are met.

The assembly process disclosed in this embodiment is not sequential, and those skilled in the art should know that the assembly steps can be adjusted by themselves on the premise of completing the assembly.

The assembly process of this embodiment is as follows: the center positioning guide rod 7 passes through the bottom of the lower clutch gear 9, and then the guide limiting teeth 7-3 are fixedly arranged on the upper part of the center positioning guide rod 7, and other steps are the same as the previous embodiment.

The working process of the technical scheme of the utility model comprises the following steps: the combined lifting hook consisting of the first lifting hook 3 and the second lifting hook 4 of the filter element grabbing tool is inserted into an opening on a filter element to be grabbed in a closed state, the filter element grabbing tool descends under the action of dead weight, the upper base 1, the central positioning guide rod 7, the upper clutch gear 8, the lower clutch gear 9 and the guide cylinder 10, at the moment, after the guide limiting teeth 7-3 on the central positioning guide rod 7 are contacted with the ratchets 15 on the upper clutch gear 8, the guide limiting teeth 7-3 gradually slide into the ratchets 15 on the upper clutch gear 8, after the central positioning guide rod 7 rotates for 90 degrees, the ratchets 15 on the lower clutch gear 9 limit the filter element grabbing tool, and at the moment, the length direction of the limiting block 7-4 at the bottom of the central positioning guide rod 7 is parallel to a gap between two steps on the lower base 2; after the filter element grabbing tool is pulled upwards integrally, a limiting block at the bottom of the central positioning guide rod 7 is separated from the lower base 2, the upper base 1 drives the distal ends of the first lifting hook 3 and the second lifting hook 4 to move upwards through the two connecting rods 5, so that the first lifting hook 3 and the second lifting hook 4 are rotated outwards at the lower ends and then opened to form a three-jaw structure, an opening on the filter element is hooked, and the filter element grabbing tool can be lifted continuously to take out the filter element, as shown in fig. 15 (the broken line part in the figure is the filter element).

When the filter element moves to a proper position, the filter element grabbing tool is put down, the filter element grabbing tool descends under the action of dead weight, the upper base 1, the central positioning guide rod 7, the upper clutch gear 8, the lower clutch gear 9 and the guide cylinder 10, at the moment, the guide limiting teeth 7-3 on the central positioning guide rod 7 are connected with the ratchets 15 on the upper clutch gear 8 again, the guide limiting teeth 7-3 gradually slide into the teeth of the upper clutch gear 8, the central positioning guide rod 7 rotates by 90 degrees, the ratchets 15 on the lower clutch gear 9 limit the filter element, at the moment, the length direction of the limiting block 7-4 at the bottom of the central positioning guide rod 7 and the gap between two steps on the lower base 2 are in a 90-degree crossed shape, and the two steps limit the ascending of the limiting block 7-4, as shown in fig. 11; the filter element grabbing tool is pulled upwards integrally, at the moment, the limiting block at the bottom of the central positioning guide rod 7 drives the lower base 2 to ascend, the lower base 2 drives the middle parts of the first lifting hook 3 and the second lifting hook 4 to ascend while ascending, the distal ends of the first lifting hook 3 and the second lifting hook 4 are automatically pressed downwards under the action of dead weight and dead weight of the connecting rod 5, and after the first lifting hook 3 and the second lifting hook 4 are rotated inwards at the lower end and then closed, the filter element grabbing tool is extracted again, so that separation between the filter element grabbing tool and the filter element is realized.

In another embodiment, as shown in fig. 13 and 14, a connection block 12 with an opening is provided at the top of the upper base 1, and the connection block 12 may be connected to other components such as a wire rope.

The central positioning guide rod 7 of the embodiment is of an integrated structure, 4 guiding limit teeth are arranged on the upper portion of the central positioning guide rod 7 along the circumferential direction, the structure of the guiding limit teeth is matched with the interdental structure of the upper clutch gear and the lower clutch gear, and the guiding limit teeth are positioned between the upper clutch gear and the lower clutch gear.

A square limiting block is arranged at the lower part of the central positioning guide rod 7, a bulge is arranged at the bottom of the limiting block, and the limiting block and the bulge are subjected to round corner treatment. The other parts are constructed as in the previous embodiment.

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

With the above-described preferred embodiments according to the present utility model as an outline, the related workers can make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of the claims.

Claims (10)

1. A filter core gripping tool which is characterized in that: comprises an upper base, a lower base, a combined lifting hook, a group of symmetrically arranged connecting rods, a group of symmetrically arranged connecting plates and a lifting hook opening and closing adjusting mechanism;

the middle part of the combined lifting hook is hinged with the lower base, the upper part of the combined lifting hook is respectively hinged with the lower part of the connecting rod, and the upper parts of the connecting rods are respectively movably connected with the upper base;

the lower part of the connecting plate is fixedly connected with the lower base, and the upper part of the connecting plate is movably connected with the upper base;

the upper part of the connecting rod and the upper part of the connecting plate are respectively provided with an opening for the upper base to slide up and down;

the lifting hook opening and closing adjusting mechanism is fixedly connected with the upper base, and the lower part of the lifting hook opening and closing adjusting mechanism can be inserted into the lower base and limited;

when the lower part of the lifting hook opening and closing adjusting mechanism is inserted into the lower base and limited, the combined lifting hook is closed;

when the lower part of the lifting hook opening and closing adjusting mechanism is separated from the lower base, the combined lifting hook is opened.

2. The cartridge gripping tool of claim 1, wherein: the lifting hook opening and closing adjusting mechanism comprises a center positioning guide rod and a guide rod rotating mechanism, wherein the center positioning guide rod is connected with the guide rod rotating mechanism, and the guide rod rotating mechanism is connected with the upper base;

the guide rod rotating mechanism returns to the original position every time when descending and ascending, and can drive the center positioning guide rod to rotate by 90 degrees and position;

the lower part of the central positioning guide rod is provided with a limiting block which can be clamped into the lower base and limit;

when the guide rod rotating mechanism descends, the limiting block enters the lower base, and the guide rod rotating mechanism ascends to center the guide rod to rotate by 90 degrees to clamp the limiting block into the lower base;

when the guide rod rotating mechanism descends again, the guide rod rotating mechanism drives the center positioning guide rod to rotate 90 degrees, and the guide rod rotating mechanism ascends to drive the limiting block to be separated from the lower base.

3. The cartridge gripping tool of claim 2, wherein: the guide rod rotating mechanism comprises an upper clutch gear and a lower clutch gear, the upper clutch gear and the lower clutch gear are correspondingly provided with four ratchets, and tooth tips of the upper clutch gear and the lower clutch gear are opposite;

the positions of the upper clutch gear and the lower clutch gear are relatively fixed;

the lower part of the center positioning guide rod passes through the lower clutch gear, and the upper part of the center positioning guide rod is positioned between the upper clutch gear and the lower clutch gear;

four guiding limit teeth which are matched with the ratchet teeth on the upper clutch gear and the lower clutch gear are arranged on the central positioning guide rod between the upper clutch gear and the lower clutch gear;

after the guiding limit teeth are contacted with the ratchets on the upper clutch gear, the guiding limit teeth gradually slide into the teeth of the upper clutch gear, and the center positioning guide rod rotates for 90 degrees;

after the guiding limit teeth are contacted with the ratchets on the lower clutch gear, the guiding limit teeth gradually slide into the teeth of the lower clutch gear, and the center positioning guide rod is positioned.

4. A cartridge gripping tool according to claim 3, wherein: the guide rod rotating mechanism further comprises a guide cylinder, the upper clutch gear and the lower clutch gear are both arranged in the guide cylinder, and the position of the lower clutch gear can be adjusted and positioned.

5. The cartridge gripping tool of claim 4, wherein: the guide cylinder is internally provided with a thread groove, and the peripheries of the upper clutch gear and the lower clutch gear are respectively provided with threads matched with the thread groove in the guide cylinder;

a slotted hole is formed between the partial threads, and a limiting screw hole is formed in the position where the slotted hole is aligned.

6. The cartridge gripping tool of claim 5, wherein: the slotted holes are a plurality of and uniformly distributed along the circumferential direction of the lower clutch gear.

7. The cartridge gripping tool of any one of claims 1 to 6 wherein: the outer side of the lifting hook opening and closing adjusting mechanism is provided with a guiding locating sleeve, and the guiding locating sleeve is fixedly connected with the connecting plate.

8. The cartridge gripping tool of any one of claims 1 to 6 wherein: the bottom of the lower base is provided with a plane adjusting plate.

9. The cartridge gripping tool of any one of claims 1 to 6 wherein: the combined lifting hook comprises a first lifting hook and a second lifting hook which are similar to an L-shaped structure, are arranged in opposite directions, and are hinged at the middle part.

10. The cartridge gripping tool of claim 9, wherein: the first lifting hook comprises two hook teeth, a gap for accommodating a second lifting hook is formed between the two hook teeth, and the second lifting hook is arranged in the gap and hinged with the first lifting hook.