CN215318474U

CN215318474U - Guider and heat exchanger assembly fixture

Info

Publication number: CN215318474U
Application number: CN202121674043.XU
Authority: CN
Inventors: 徐普; 王晓彬; 李建飞; 周威
Original assignee: Gree Electric Appliances Inc of Zhuhai; Gree Changsha HVAC Equipment Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Gree Changsha HVAC Equipment Co Ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2021-12-28
Anticipated expiration: 2031-07-21

Abstract

The utility model discloses a guide device and a heat exchanger assembly tool, wherein the guide device comprises: one end of the shaft sleeve is connected with an expansion head; the ejector rod penetrates through the shaft sleeve and the expansion head simultaneously, can move relative to the shaft sleeve, has a first position for expanding the expansion head and a second position for contracting the expansion head, and is switched between the first position and the second position; and the elastic piece is respectively connected with the shaft sleeve and the ejector rod and is used for providing elastic force for moving the ejector rod from the first position to the second position. According to the guide device, the elastic part is arranged, so that the guide rod can automatically move to the second position under the action of the elastic force of the elastic part, the heat exchange tube is automatically loosened, the operation process is simplified, and the working efficiency is improved.

Description

Guider and heat exchanger assembly fixture

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a guide device and a heat exchanger assembly tool.

Background

When a large unit pressure vessel in a factory is subjected to tube penetrating operation, the heat exchange tube cannot smoothly penetrate through the support plates frequently, and the reason is that the support plates and the tube plate heat exchange holes are not concentric; meanwhile, the heat exchange tube is clamped and deformed due to the dislocation between the holes. And the supporting plates are generally difficult to enable the heat exchange tubes to smoothly penetrate through the supporting plates in the closed container, and the forced hammering penetration can deform or even scrap the heat exchange tubes.

For improving the poling efficiency, avoid heat exchange tube light section fish tail and deformation, can adopt poling guider usually, this guider can guide the heat exchange tube and pass the backup pad, and current guider has grabs the pipe function, but grabs and puts the process operation more loaded down with trivial details, influences poling efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a guide device and a heat exchanger assembly tool, and solves the problem that the operation of the existing guide device in the grabbing and placing process is complicated.

According to one aspect of the present invention, there is disclosed a guide device comprising: the expansion joint comprises a shaft sleeve, wherein one end of the shaft sleeve is connected with an expansion head; the ejector rod penetrates through the shaft sleeve and the expansion head simultaneously, the ejector rod can move relative to the shaft sleeve, the ejector rod is provided with a first position enabling the expansion head to expand and a second position enabling the expansion head to contract, and the ejector rod is switched between the first position and the second position; the elastic piece is respectively connected with the shaft sleeve and the ejector rod and used for providing elastic force for enabling the ejector rod to move from the first position to the second position.

Furthermore, the elastic part is a spring, the spring is sleeved on the ejector rod, a first end of the spring is connected with the ejector rod, and a second end of the spring is connected with the shaft sleeve.

Further, the shaft sleeve is provided with an installation groove, a part of the ejector rod penetrates through the installation groove, an installation space is formed between the part, corresponding to the installation groove, of the ejector rod and the installation groove, and the spring is located in the installation space.

Further, the guiding device further comprises: and the guide rod is connected with the shaft sleeve.

Furthermore, the first end of the ejector rod is matched with the expansion head, the second end of the ejector rod is a stressed end, and the second end of the ejector rod moves under stress; and a fluid pressure channel is arranged in the guide rod and communicated to the second end of the ejector rod, and the fluid pressure channel applies force to the second end of the ejector rod through fluid pressure.

Further, the guide rod is connected with the shaft sleeve in a sealing mode.

Further, the expansion head comprises a plurality of claws distributed at intervals in the circumferential direction; in the expansion state of the expansion head, all the clamping jaws expand towards the outside of the expansion head; in the expansion head contraction state, all the claws retract.

Furthermore, the plurality of clamping jaws enclose an expansion channel, in the first position, the first end of the ejector rod is inserted into the expansion channel, and the first end of the ejector rod props against the clamping jaws to expand outwards; in the second position, the ejector rod is separated from the expansion channel, and the clamping jaws retract.

Furthermore, the jack catch is sleeved with a protective sleeve.

According to another aspect of the utility model, a heat exchanger assembling tool is disclosed, which comprises the guide device.

When the heat exchange tube needs to be fixed, the ejector rod can be moved from the second position to the first position by applying an acting force on the ejector rod, so that the expansion head expands and fixes the heat exchange tube, and at the moment, the elastic part elastically deforms and applies elasticity to the ejector rod; after the acting force exerted on the ejector rod disappears, the ejector rod moves to the second position from the first position under the action of the elastic force of the elastic part, and the expansion head contracts, so that the heat exchange tube is automatically loosened. According to the guide device, the elastic part is arranged, so that the guide rod can automatically move to the second position under the action of the elastic force of the elastic part, the heat exchange tube is automatically loosened, the operation process is simplified, and the working efficiency is improved.

Drawings

FIG. 1 is a schematic view of a guide device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the construction of the bushing of the guide device according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the expansion head of the guide device of the present invention;

FIG. 4 is an exploded view of a guide device according to an embodiment of the present invention;

FIG. 5 is a schematic view of a protective sheath of a guide according to an embodiment of the utility model;

FIG. 6 is a schematic view of a guide device according to an embodiment of the present invention in use;

legend: 10. a shaft sleeve; 11. mounting grooves; 20. an expansion head; 21. a claw; 211. a top abutting section; 212. an inner wrap section; 22. an expansion channel; 30. a top rod; 31. a first limit boss; 40. an elastic member; 50. a guide bar; 51. a fluid pressure channel; 60. and (6) a protective sleeve.

Detailed Description

The present invention is further illustrated by the following examples, but is not limited to the details of the description.

As shown in fig. 1 to 5, the present invention discloses a guide device, which comprises a shaft sleeve 10, an expansion head 20, a mandrel 30 and an elastic member 40, wherein one end of the shaft sleeve 10 is connected with the expansion head 20; the push rod 30 penetrates through the shaft sleeve 10 and the expansion head 20 at the same time, the push rod 30 can move relative to the shaft sleeve 10, the push rod 30 has a first position enabling the expansion head 20 to expand and a second position enabling the expansion head 20 to contract, and the push rod 30 is switched between the first position and the second position; the elastic member 40 is connected to the bushing 10 and the push rod 30, respectively, and the elastic member 40 is used to provide an elastic force for moving the push rod 30 from the first position to the second position.

When the heat exchange tube needs to be fixed, the ejector rod 30 can be moved from the second position to the first position by applying an acting force on the ejector rod 30, so that the expansion head 20 is expanded and the heat exchange tube is fixed, and at the moment, the elastic piece 40 is elastically deformed and applies elasticity to the ejector rod 30; when the acting force exerted on the ejector rod 30 disappears, the ejector rod 30 moves from the first position to the second position under the action of the elastic force of the elastic part 40, and the expansion head 20 contracts, so that the heat exchange tube is automatically loosened. According to the guide device, the elastic part 40 is arranged, so that the guide rod 30 can automatically move to the second position under the action of the elastic force of the elastic part 40, the heat exchange tube is automatically loosened, the operation process is simplified, and the working efficiency is improved.

It should be noted that the connection between the shaft sleeve 10 and the expansion head 20 may be a welded connection, a screwed connection, a snap connection, or an integral molding, wherein the welding may be an argon arc welding.

As shown in fig. 1, the elastic member 40 is a spring, the spring is sleeved on the top rod 30, a first end of the spring is connected with the top rod 30, and a second end of the spring is connected with the shaft sleeve 10. Through setting up the spring, can realize the auto-response of ejector pin 30 through the spring, the spring housing is established on ejector pin 30, makes the spring operation more stable, improves work efficiency.

As shown in fig. 2, preferably, the shaft sleeve 10 has a mounting groove 11, the second end of the push rod 30 is provided with a limit boss 31, a part of the push rod 30 penetrates through the mounting groove 11, the limit boss 31 is located in the mounting groove 11, an installation space is formed between the part of the push rod 30 corresponding to the mounting groove 11 and the mounting groove 11, the spring is located in the installation space, one end of the spring abuts against the limit boss 31, and the other end abuts against the inner wall of the mounting groove. Set up like this and can be with the spring restriction in installation space, make the process of spring elastic deformation more stable.

Since the support plate 71 and the tube plate 72 of the large water chiller unit 70 are both located in the closed space, the guide device further includes a guide rod 50 for facilitating the operation, and the guide rod 50 is connected with the shaft sleeve 10. Through setting up guide arm 50, can stretch into the enclosed space with guider through guide arm 50 and operate heat exchange tube 73, reduce the poling degree of difficulty, alleviate staff intensity of labour, promote poling efficiency, stop the heat exchange tube 73 light section that the brute force poling leads to warp, fish tail even scrap.

The first end of the ejector rod 30 is matched with the expansion head 20, the first end is of a conical structure, the second end of the ejector rod 30 is a stressed end, and the second end of the ejector rod 30 moves under stress; a fluid pressure passage 51 is provided in the guide rod 50, the fluid pressure passage 51 opens to the second end of the jack 30, and the fluid pressure passage 51 applies a force to the second end of the jack 30 by fluid pressure. When the fluid pressure disappears, the ejector rod 30 moves from the first position to the second position through elasticity, so that the operation is convenient.

In order to prevent fluid leakage, the guide rod 50 is connected with the shaft sleeve 10 in a sealing manner, and the push rod 30 is arranged between the shaft sleeve 10 in a sealing manner, preferably, the connecting end of the guide rod 50 and the shaft sleeve 10 is provided with an internal thread, the shaft sleeve 10 is provided with an external thread, the guide rod 50 is connected with the shaft sleeve 10 in a threaded manner, and the push rod 30 and the shaft sleeve 10 are sealed by a sealing ring.

The fluid in the fluid pressure passage 51 may be liquid or gas.

As shown in fig. 3, the expansion head 20 includes a plurality of circumferentially spaced jaws 21; in the expansion state of the expansion head 20, all the claws 21 expand towards the outside of the expansion head 20; in the contracted state of the expansion head 20, all the claws 21 are retracted. In an expansion state, all the clamping claws 21 expand towards the outside of the expansion head 20, so that the outer diameter of the whole expansion head is increased, and the clamping claws are in interference fit with and fixed on a heat exchange tube; and under the contraction state of the expansion head 20, all the clamping claws 21 retract, the overall outer diameter of the expansion head is reduced, and when the outer diameter of the expansion head is smaller than the inner diameter of the heat exchange pipe, the expansion head is separated from the heat exchange pipe. The inner wall of the heat exchange tube can be uniformly stressed by adopting the plurality of clamping claws 21, so that the damage of the heat exchange tube is avoided, and the grabbing is more stable.

Furthermore, the plurality of claws 21 enclose an expansion channel 22, in the first position, the first end of the ejector rod 30 is inserted into the expansion channel 22, and the first end of the ejector rod 30 props against the claws 21 and extends outwards; in the second position, the ram 30 is disengaged from the expansion channel 22 and the jaws 21 are retracted. Through enclosing a plurality of jack catchs 21 into inflation passageway 22, make ejector pin 30 can outwards push all jack catchs 21 simultaneously, make all jack catchs 21 pull the outside simultaneously and expand and stretch, in order to make inflation and shrink process more steady, can set up the first end of ejector pin 30 to the toper structure, and the part that inflation passageway 22 and ejector pin contact also forms the inclined plane with toper structure assorted, and the two cooperation is more steady like this, and ejector pin 30 breaks away from and makes and is difficult to be died by the jack catchs 21 card.

It should be noted that each jaw 21 includes an abutting section 211 and an inner-rolling section 212, and the inner-rolling section 212 is bent inward by 180 ° and parallel to the abutting section 211, so that the radius of the expansion channel can be reduced, and the radius of the ejector rod 30 can be correspondingly reduced, thereby saving material and reducing the overall weight.

As shown in fig. 5, the latch 21 is further sleeved with a protective sleeve 60 and is in interference fit. The protective sheath cover is established on propping the top section 211, and protective sheath one side is thicker, and the opposite side is thinner, and thicker one side is located and is propped between top section 211 and the interior volume of section 212 for the power that receives interior volume of section 212 transmits and is being propped top section 211, and thinner one side is located and props the outside of top section 211, and when the expansion head inserted the heat exchange tube, the thinner one side of protective sheath was located and is being propped between top section 211 and the heat exchange tube inner wall, can prevent like this that the heat exchange tube inner wall from being by the fish tail.

When the expansion head is used, the guide device penetrates into the heat exchange tube by staff, the guide rod is pressed with oil to extrude, the ejector rod is pushed and inserted into the expansion channel under the action of the oil pressure, so that the expansion head expands, and the expansion head is fixed with the heat exchange tube.

According to another embodiment not shown in the figures, a heat exchanger assembling tool is further disclosed, and the heat exchanger assembling tool comprises the guide device.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes and modifications which are obvious to the technical scheme of the utility model are covered by the protection scope of the utility model.

Claims

1. A guide device, comprising:

the device comprises a shaft sleeve (10), wherein one end of the shaft sleeve (10) is connected with an expansion head (20);

a push rod (30), wherein the push rod (30) is simultaneously arranged in the shaft sleeve (10) and the expansion head (20) in a penetrating mode, the push rod (30) can move relative to the shaft sleeve (10), the push rod (30) has a first position enabling the expansion head (20) to expand and a second position enabling the expansion head (20) to contract, and the push rod (30) is switched between the first position and the second position;

the elastic piece (40), the elastic piece (40) is connected with the shaft sleeve (10) and the ejector rod (30) respectively, and the elastic piece (40) is used for providing the elasticity that makes the ejector rod (30) move from the first position to the second position.

2. The guide device of claim 1,

the elastic piece (40) is a spring, the spring is sleeved on the ejector rod (30), the first end of the spring is connected with the ejector rod (30), and the second end of the spring is connected with the shaft sleeve (10).

3. The guide device of claim 2,

the shaft sleeve (10) is provided with a mounting groove (11), a part of the ejector rod (30) penetrates through the mounting groove (11), a mounting space is formed between the part, corresponding to the mounting groove (11), of the ejector rod (30) and the mounting groove (11), and the spring is located in the mounting space.

4. The guide device of claim 1, further comprising:

the guide rod (50) is connected with the shaft sleeve (10).

5. The guide device of claim 4,

the first end of the ejector rod (30) is matched with the expansion head (20), the second end of the ejector rod (30) is a stressed end, and the second end of the ejector rod (30) moves under stress;

a fluid pressure channel (51) is arranged in the guide rod (50), the fluid pressure channel (51) is communicated with the second end of the ejector rod (30), and the fluid pressure channel (51) applies force to the second end of the ejector rod (30) through fluid pressure.

6. The guide device of claim 5,

the guide rod (50) is connected with the shaft sleeve (10) in a sealing mode.

7. The guide device of claim 1,

the expansion head (20) comprises a plurality of jaws (21) which are distributed at intervals in the circumferential direction;

in the expansion state of the expansion head (20), all the clamping jaws (21) expand towards the outside of the expansion head (20);

in the contracted state of the expansion head (20), all the claws (21) are retracted.

8. The guide device of claim 7,

a plurality of jaws (21) enclose an expansion channel (22),

in the first position, the first end of the ejector rod (30) is inserted into the expansion channel (22), and the first end of the ejector rod (30) abuts against the clamping jaw (21) to expand outwards;

in the second position, the ejector pin (30) is disengaged from the expansion channel (22) and the jaws (21) are retracted.

9. The guide device of claim 7,

the jaw (21) is sleeved with a protective sleeve (60).

10. A heat exchanger assembly tooling, characterized by comprising the guide device of any one of claims 1 to 9.