CN209773266U - Pipe expanding and tightening two-in-one tool - Google Patents
Pipe expanding and tightening two-in-one tool Download PDFInfo
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- CN209773266U CN209773266U CN201920242426.6U CN201920242426U CN209773266U CN 209773266 U CN209773266 U CN 209773266U CN 201920242426 U CN201920242426 U CN 201920242426U CN 209773266 U CN209773266 U CN 209773266U
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Abstract
The utility model belongs to the technical field of hydraulic tool, concretely relates to collect expand pipe and tighten up hydraulic tool as an organic whole. The utility model provides an expand pipe and tighten up two unification tools, includes the cylinder body, be equipped with expander and sliding sleeve tightener in the cylinder body, be equipped with oil circuit reversing mechanism between expander and the sliding sleeve tightener, oil circuit reversing mechanism includes the oil connector, expander and sliding sleeve tightener integrated into one piece and rotation setting are equipped with the switching-over valve body in the cylinder body on the oil connector, are equipped with the expander hydro-cylinder on the switching-over valve body respectively and tighten up the hydro-cylinder with the sliding sleeve, and the oil connector internal shaping of crossing has an oil outlet channel, and the oil outlet channel communicates to the expander hydro-cylinder and the sliding sleeve tightens up the hydro-cylinder. The utility model discloses an expand pipe and tighten up two unification instruments and set expand pipe and sliding sleeve to an organic whole through oil circuit reversing mechanism and use, solve current expand pipe instrument or tighten up the problem that the instrument separately used.
Description
Technical Field
The utility model belongs to the technical field of hydraulic tool, concretely relates to collect expand pipe and tighten up hydraulic tool as an organic whole.
Background
The pipe expanding tool has the function of extruding and expanding one end of the pipe fitting, so that the opening of the pipe fitting can be expanded, the tightening tool has the function of smoothly sleeving the sliding sleeve into the expanded end of the pipe fitting, and the pipe fitting and the tightening tool are combined to facilitate the tight joint of the pipe fitting. However, the existing pipe expanding tool or tightening tool often has only a single function, and therefore, when the pipe expanding and tightening tool is needed to be arranged, the pipe expanding tool and the tightening tool are usually needed to be arranged separately, which not only increases the cost, but also brings inconvenience to users.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an expand pipe and tighten up two unification instruments, set the expand pipe and slide sleeve to an organic whole through oil circuit reversing mechanism and use, solve current expand pipe instrument or tighten up the problem that the instrument separately used.
the purpose of the utility model is realized like this: a pipe expanding and tightening two-in-one tool comprises a cylinder body, wherein a pipe expander, a sliding sleeve tightener and an oil passing joint are arranged in the cylinder body, and the cylinder body is rotatably arranged around the oil passing joint; and one side of the oil joint is communicated with the pipe expander or the sliding sleeve tightener through the reversing valve body.
Preferably, the reversing valve body comprises a first valve body communicated with the pipe expanding oil cylinder and a second valve body communicated with the sliding sleeve tightener; the oil outlet channel is communicated to the sliding sleeve tightening oil cylinder through the second valve body in sequence; the oil outlet channel is communicated to the pipe expanding oil cylinder through the first valve body in sequence.
Preferably, one side of the oil passing joint is provided with an eccentric ring groove; the oil outlet channel is communicated with the first oil channel, a first elastic part is arranged in the first oil channel, a second elastic part is arranged in the second oil channel, a limiting sealing part is arranged between the first elastic part and the second elastic part, the first elastic part and the second elastic part are respectively abutted against two sides of the limiting sealing part, and the second oil channel is communicated with a sliding sleeve tightening oil cylinder; the elastic force of the first elastic member is greater than the elastic force of the second elastic member.
Preferably, the eccentric ring groove is arc-shaped, and the radian of the bottom of the eccentric ring groove deviating from the center of the circle is gradually increased.
Preferably, the second valve body comprises a limiting seat, a guide seat is arranged in the limiting seat, the first elastic piece is arranged in the guide seat, and the guide seat is arranged on the eccentric ring groove in a sliding mode.
Preferably, the distance from the end face of the guide seat of the second valve body to the axial lead of the oil outlet channel is smaller than the distance from the end face of the guide seat of the first valve body to the axial lead of the oil outlet channel.
Preferably, a rotary positioning cover is fixedly arranged below the cylinder body, a rotary limiting groove is formed in the oil passing joint, a rotary positioning steel ball is arranged below the rotary positioning cover, and the rotary positioning steel ball can be rotatably arranged on the rotary limiting groove.
Preferably, a pipe expanding piston is arranged in the pipe expanding oil cylinder, a piston return spring is arranged on the pipe expanding piston, the front end portion of the pipe expanding piston is connected with a thimble, the pipe expanding piston is arranged on the thimble in an extending mode, a fixed chuck and a movable chuck arranged on the fixed chuck are arranged outside the pipe expanding oil cylinder, the rear end portion of the fixed chuck is located in a pipe body of the pipe expanding oil cylinder, the thimble is arranged at the front end portion of the fixed chuck and penetrates through the movable chuck, a disc spring is arranged between the movable chuck and the fixed chuck, the thimble abuts against the disc spring, and the thimble is driven to drive the thimble to overcome the elastic force of the disc spring through the pipe expanding piston.
Preferably, the reversing valve body is connected and arranged on two sides of the oil passing joint, an oil outlet channel is formed in the oil passing joint, a first oil hole is formed in one end of the oil outlet channel, a second oil hole matched with the first oil hole is formed in one end of the reversing valve body, and the first oil hole is communicated with the second oil hole.
Preferably, a limiting groove is formed in the oil passing joint, and the limiting seat abuts against the limiting groove.
Compared with the prior art, the utility model outstanding and profitable technological effect is: when the tool is used, two functions of a pipe expander and a sliding sleeve tightener can be used on the same tool only by rotating the reversing mechanism by 180 degrees, so that the pipe expanding function and the tightening function are integrated, the tool cost is reduced, the convenience of carrying and operation is improved, and the tool is driven by two oil cylinders respectively, so that the oil consumption is reduced, and the driving force is strong.
Drawings
Fig. 1 is a perspective view of a pipe expanding and sliding sleeve tightening two-in-one tool according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an oil way reversing mechanism in the embodiment of the present invention.
Fig. 3 is a partially enlarged view of fig. 2A.
Fig. 4 is a horizontal sectional view of fig. 1 (expander and sliding sleeve retractor).
Reference numerals: 1-a tube expander; 1-4 ejector pins; 1-5 expanding piston; 1-6 fixing the chuck; 1-7 movable clamping heads; 1-8 disc springs; 2-sliding sleeve tightener; 3-oil way reversing mechanism; 4-oil passing joint; 5-cylinder body; 6-a reversing valve body; 6-1 oil duct I; 6-2 oil duct II; 7-an oil outlet channel; 7-1 a first elastic member; 7-2 second elastic member; 8-a pipe expanding oil cylinder; 9-the sliding sleeve tightens up the oil cylinder; 9-1, tightening the piston by the sliding sleeve; 10-a spacing seal; 11-rotating the positioning cover; 12-rotating the limiting groove; 13-rotating and positioning the steel ball; 15-oil inlet hole; 16-a locating pin; 17-a resilient pin; 18-a first oil hole; 19-a second oil hole; 20-a first valve body; 21-a second valve body; 22-a guide seat; 23-a limiting seat; 24-eccentric ring groove; 25-limiting groove.
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings.
The utility model provides a sliding sleeve tightener's realization specifically refers to the applicant and finds an application number and is: 201621029886.3A device for rapidly connecting an expander and a sliding sleeve tightening tool, the sliding sleeve tightening tool in the comparison document extrudes and expands one end of a pipe fitting, so as to expand and expand the opening of the pipe fitting, the sliding sleeve tightener in the application can directly adopt the sliding sleeve tightening tool in the comparison document, the two effects are the same, the principle is also the same, and the replacement can be carried out.
A two-in-one tool for pipe expanding and tightening comprises a cylinder body 5, wherein a pipe expander 1 and a sliding sleeve tightener 2 are arranged in the cylinder body 5, an oil way reversing mechanism 3 is arranged between the pipe expander 1 and the sliding sleeve tightener 2, the pipe expander 1 and the sliding sleeve tightener 2 are integrally arranged, and the pipe expander 1 and the sliding sleeve tightener 2 rotate around an oil passing joint 4; the oil way reversing mechanism 3 comprises an oil passing joint 4, an expander 1 and a sliding sleeve tightener 2 are integrally formed and rotatably arranged on the oil passing joint 4, a reversing valve body 6 is arranged in a cylinder body 5, an expander oil cylinder 8 and a sliding sleeve tightening oil cylinder 9 are respectively arranged on the reversing valve body 6, an oil outlet channel 7 is formed in the oil passing joint 4, the reversing valve body 6 is connected and arranged on two sides of the oil passing joint 4, the oil outlet channel 7 is formed in the oil passing joint 4, a first oil hole 18 is formed at one end of the oil outlet channel 7, a second oil hole 19 matched with the first oil hole 18 is formed at one end of the reversing valve body 6, and the first oil hole 18 is communicated with the second oil hole 19; the reversing valve body 6 comprises a first valve body 20 communicated with the pipe expanding oil cylinder 8 and a second valve body 21 communicated with the sliding sleeve tightener 2, the second valve body 21 is opened, the first valve body 20 is closed, and the oil outlet channel 7 is communicated to the sliding sleeve tightener oil cylinder 9 through the second valve body 21 in sequence; the reversing mechanism is rotated by 180 degrees, the second valve body 21 is closed, the first valve body 20 is opened, and the oil outlet channel 7 is communicated to the pipe expanding oil cylinder 8 through the first valve body 20 in sequence.
An eccentric ring groove 24 and a limiting groove 25 are formed in one side of the oil passing joint 4, the limiting groove is designed to enable a limiting seat 23 to limit the position of the limiting seat, the limiting seat does not shake, and after limiting, a guide seat 22 can be pushed in the limiting seat 23, the second valve body 21 comprises the limiting seat 23 abutted against the limiting groove 25, and one end of the guide seat 22, which is provided with a second oil hole 19 and is formed in the limiting seat 23, of the guide seat 22 is abutted against the eccentric ring groove 24; an oil duct I6-1 and an oil duct II 6-2 communicated with the oil duct I6-1 are formed in the limiting seat 23, the oil outlet channel 7 is communicated with the oil duct I6-1, a first elastic part 7-1 is arranged in the oil duct I6-1, a second elastic part 7-2 is arranged in the oil duct II 6-2, a limiting sealing part 10 is arranged between the first elastic part 7-1 and the second elastic part 7-2, the first elastic part 7-1 and the second elastic part 7-2 are respectively abutted against two sides of the limiting sealing part 10, the oil duct II 6-2 is communicated with the sliding sleeve tightening oil cylinder 9, and the oil path tightened by the sliding sleeve is opened; the first elastic piece 7-1 in the first valve body 20 presses the limit sealing piece 10 in the first valve body 20, the limit sealing piece 10 in the first valve body 20 abuts against the second oil passage 6-2 to form sealing, and then the oil passage of the expander is closed.
The use modes of the pipe expander and the sliding sleeve tightener can be switched at will only by rotating the cylinder body 5 by 180 degrees, so that the pipe expanding function and the tightening function are integrated, the tool cost is reduced, the convenience of carrying and operation is improved, and the two oil cylinders are respectively used for driving, the oil consumption is reduced, and the driving force is strong.
The elastic force of the first elastic part 7-1 must be larger than that of the second elastic part 7-2, the second elastic part 7-2 is a small spring, the small spring is arranged in the oil passage two 6-2, the first elastic part 7-1 is a large spring, and the large spring is arranged in the oil passage one 6-1.
The limiting sealing element 10 is a sealing steel ball.
The design of the eccentric ring groove 24 ensures that the large spring is not in a compressed state any more, the large spring is abutted against the eccentric ring groove 24 through the guide seat 22, the eccentric ring groove 24 is arc-shaped, the radian of the bottom of the eccentric ring groove 24 deviating from the center of a circle is gradually increased, when the oil joint 4 is rotated, the large spring clamped in the radian can be slowly close to the center of the bottom of the eccentric ring groove 24 along the radian, so that the large spring can extend, meanwhile, the sealing steel ball at the tightening end of the sliding sleeve is enabled to be not abutted against the oil duct II 6-2 under the elastic action of the small spring, the small spring pushes the sealing steel ball, the sealing steel ball pushes the large spring, the large spring pushes the guide seat 22, the guide seat 22 pushes the eccentric ring groove 24 forwards, the oil way is opened at the moment, the oil outlet channel 7, the oil duct I6-1 and the oil duct II, and hydraulic oil is conveyed to the first oil passage 6-1 through the oil outlet passage 7, and enters the sliding sleeve tightening oil cylinder 9 along the second oil passage 6-2.
A pipe expanding piston 1-5 is arranged in the pipe expanding oil cylinder 8, a piston return spring 1-1 is arranged on the pipe expanding piston 1-5, the front end part of the piston rod 2 is connected with thimbles 1-4, the pipe expanding piston 1-5 is arranged on the thimbles 1-4 in an extending way, a fixed chuck 1-6 and a movable chuck 1-7 arranged on the fixed chuck 1-6 are arranged outside the pipe expanding oil cylinder 8, the rear end part of the fixed chuck 1-6 is positioned in the pipe body of the pipe expanding oil cylinder 8, the thimbles 1-4 are provided with the front end part of the fixed chuck 1-6, disc springs 1-8 are arranged between the movable chuck 1-7 and the fixed chuck 1-6, the thimbles 1-4 are arranged on the movable chuck 1-7 in a penetrating way, the thimbles 1-4 are abutted against the disc springs 1-8, the thimble 1-4 is driven by the tube expanding piston 1-5 to overcome the elastic force of the disc spring 1-8.
The disc spring has the advantages that:
1. The disc spring is subjected to an extremely large load in a small space. The deformation energy per unit volume of the disc spring is larger than that of other types of springs. Has good buffering and shock absorbing capacity, and particularly has more remarkable effects of absorbing impact and dissipating energy due to the surface friction resistance when the overlapping combination is adopted.
2. The disc spring has a variable stiffness characteristic. By changing the ratio of the height of the truncated cone in the disc to the thickness of the disc, different spring characteristic curves can be obtained, and the spring characteristic curves can be linear, increasing, decreasing or the combination form of the linear, increasing, decreasing or the combination form. In addition, the variable rigidity characteristic can be obtained by different combinations of discs with different thicknesses or by different numbers of stacked discs.
3. The disc spring can obtain different bearing capacity and characteristic curve by changing the number of discs or the combination form of the discs, so that discs of various sizes can be suitable for wide application range, and spare parts can be prepared and managed easily.
4. In the case of a combination spring which is subjected to a large load, the size of each disc is not large, facilitating manufacturing and heat treatment. When some discs are damaged, only individual replacement is required, thereby facilitating maintenance and repair.
5. The properly designed and manufactured belleville spring has long service life.
6. Since the disc spring is annular, the force is transmitted concentrically.
Because of these advantages, the utility model adopts the disc spring, the disc spring 1-8 of the utility model is arranged between the movable chuck 1-7 and the fixed chuck 1-6, so that the thimble 1-4 can be quickly separated from the pipe expanding mold, and the pipe expanding efficiency is greatly improved.
Preferably, an elastic pin 17 is arranged between the thimble 1-4 and the pipe expanding piston 1-5, the thimble 1-4 and the pipe expanding piston 1-5 are fixed and limited by the elastic pin 17, so that the quality of pipe expanding is ensured, and the pipe expanding piston 1-5 is further provided with a limiting retainer ring which limits the moving distance of the pipe expanding piston 1-5.
And oil inlet holes 15 are formed at the oil inlet ends of the pipe expander and the sliding sleeve tightener, and the pipe expanding oil cylinder 8 and the sliding sleeve tightener oil cylinder 9 respectively enter the pipe expander and the sliding sleeve tightener through the oil inlet holes 15.
The rotary positioning cover 11 is fixedly arranged below the cylinder body 5, the rotary limiting groove 12 is formed in the oil passing joint 4, the rotary positioning steel ball 13 which is rotatably arranged on the rotary limiting groove 12 is arranged below the rotary positioning cover 11, and the cylinder body 5 rotates on the oil passing joint 4 through the rotary positioning steel ball 13.
The cylinder body 5 rotates 180 degrees through the rotary positioning steel ball 13, when tower clamping sound is heard, the rotary positioning steel ball 13 is proved to be clamped in the rotary limiting groove 12, the steel ball finishes positioning, the sliding sleeve tightener 2 is aligned with the starting switch, and the oil outlet channel 7 is communicated with the reversing valve body 6.
A pipe expanding piston 1-5 is arranged in the pipe expanding oil cylinder 8, a piston return spring 1-1 is arranged on the pipe expanding piston 1-5, the front end part of the piston rod 2 is connected with thimbles 1-4, the pipe expanding piston 1-5 is arranged on the thimbles 1-4 in an extending way, a fixed chuck 1-6 and a movable chuck 1-7 arranged on the fixed chuck 1-6 are arranged outside the pipe expanding oil cylinder 8, the rear end part of the fixed chuck 1-6 is positioned in the pipe body of the pipe expanding oil cylinder 8, the thimbles 1-4 are provided with the front end part of the fixed chuck 1-6, disc springs 1-8 are arranged between the movable chuck 1-7 and the fixed chuck 1-6, the thimbles 1-4 are arranged on the movable chuck 1-7 in a penetrating way, the thimbles 1-4 are abutted against the disc springs 1-8, the thimble 1-4 is driven by the tube expanding piston 1-5 to overcome the elastic force of the disc spring 1-8.
A positioning pin 16 is provided between the cylinder 5 and the rotational positioning cover 11, so that the cylinder 5 is not displaced when rotated.
When a rotary positioning steel ball 13 at the end of the pipe expander rotates to a rotary limiting groove 12, a limiting sealing element 10 is bounced open under the action of the elastic force of a second elastic element 7-2, an oil way is opened, hydraulic oil is conveyed to a first oil way 6-1 through an oil outlet channel 7, and enters a sliding sleeve tightening oil cylinder 9 along the second oil way 6-2; at this time, the limit sealing element 10 at the end of the sliding sleeve tightener is tightly closed under the action of the elastic force of the first elastic element 7-1, and the oil circuit at the end of the sliding sleeve tightener is closed.
A sliding sleeve tightening piston 9-1 is arranged in the sliding sleeve tightening oil cylinder 9, and the sliding sleeve tightening piston 9-1 drives the pipe expander 1.
The distance from the end face of the guide seat 22 of the second valve body 21 to the axial lead of the oil outlet passage 7 is smaller than the distance from the end face of the guide seat 22 of the first valve body 20 to the axial lead of the oil outlet passage 7.
The specific working process of the scheme is as follows:
Firstly, a rotary positioning steel ball 13 at the expander end is rotated to a rotary limiting groove 12, a large spring is abutted to an eccentric ring groove 24 through a guide seat 22, so that the large spring can extend, meanwhile, a sealing steel ball at the tightening end of a sliding sleeve is enabled not to be abutted to an oil duct II 6-2 under the action of the elastic force of a small spring, the small spring pushes the sealing steel ball, the sealing steel ball pushes the large spring, the large spring pushes the guide seat 22, the guide seat 22 pushes forwards to the eccentric ring groove 24, at the moment, an oil way is opened, an oil outlet channel 7, an oil duct I6-1 and an oil duct II 6-2 are communicated to a sliding sleeve tightening oil cylinder 9, hydraulic oil is conveyed to the oil duct I6-1 through the oil outlet channel 7, and the hydraulic oil enters the sliding sleeve tightening oil cylinder 9 along the oil; at this time, a sealing steel ball arranged at the expander end of the oil passing joint 4 is tightly closed under the action of large spring elasticity, the sealing steel ball is abutted against a sealing port of the second oil duct 6-2, so that sealing is formed between the second oil duct 6-2 and the first oil duct 6-1, the oil way at the expander end is closed, and the sliding sleeve tightener 2 can be used only by pressing a starting button.
If the expander 1 needs to be changed to work, the cylinder body 5 rotates 180 degrees, when tower clamping sound is heard, the steel ball completes positioning, the expander 1 is aligned with the starting switch, an oil outlet hole of the oil outlet channel 7 is communicated with an oil channel I6-1 at the end of the expander, the steel ball of the expander bounces off under the action of the elastic force of a small spring, an oil channel is opened, and oil enters the expander oil cylinder; the steel ball at the tightening end of the sliding sleeve is tightly closed under the elastic force action of the large spring, and the oil way for tightening the sliding sleeve is closed. At the moment, the pipe expander 1 can be used only by pressing a starting button, the pipe expanding oil cylinder 8 drives the pipe expanding piston 1-5 to enable the ejector pin 1-4 to move forwards, the ejector pin 1-4 overcomes the elastic force of the disc spring 1-8, the step surface of the ejector pin 1-4 compresses the disc spring 1-8 to cause the disc spring to be pressed and deformed, after the pipe expanding is finished, the disc spring is rapidly bounced open to separate the ejector pin from the pipe expanding die, then the ejector pin is moved backwards through the piston return spring 1-1, namely, the pipe expanding head 34 can be automatically folded after the pipe expanding operation is finished, so that the next pipe expanding operation can be facilitated.
The utility model discloses to expand the pipe function and tighten up the function and concentrate on together, not only can make the function diversified, the cost reduction all has better convenience in the aspect of carrying and the operation moreover.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides an expand pipe and tighten up two unification tools, includes cylinder body (5), its characterized in that: the cylinder body (5) is internally provided with an expander (1), a sliding sleeve tightener (2) and an oil passing joint (4), and the cylinder body (5) can be rotatably arranged around the oil passing joint (4); a reversing valve body (6) is arranged on one side of the pipe expander (1) and one side of the sliding sleeve tightener (2), a pipe expanding oil cylinder (8) and a sliding sleeve tightening oil cylinder (9) are arranged on the upper side of the reversing valve body (6), and one side of the oil passing joint (4) is communicated with the pipe expander (1) or the sliding sleeve tightener (2) through the reversing valve body (6).
2. A tool for expanding and tightening according to claim 1, wherein: the reversing valve body (6) comprises a first valve body (20) communicated with the pipe expanding oil cylinder (8) and a second valve body (21) communicated with the sliding sleeve tightener (2); an oil outlet channel (7) is formed in the oil passing joint (4), and the oil outlet channel (7) is communicated to the sliding sleeve tightening oil cylinder (9) through a second valve body (21) in sequence; the oil outlet channel (7) is communicated to the pipe expanding oil cylinder (8) through the first valve body (20) in sequence.
3. A tool for expanding and tightening according to claim 2, wherein: an eccentric ring groove (24) is formed in one side of the oil passing joint (4); the oil outlet channel (7) is communicated with the first oil channel (6-1), a first elastic part (7-1) is arranged in the first oil channel (6-1), a second elastic part (7-2) is arranged in the second oil channel (6-2), a limiting sealing part (10) is arranged between the first elastic part (7-1) and the second elastic part (7-2), the first elastic part (7-1) and the second elastic part (7-2) are respectively abutted against two sides of the limiting sealing part (10), and the second oil channel (6-2) is communicated with a tightening oil cylinder (9); the elastic force of the first elastic member (7-1) is greater than the elastic force of the second elastic member (7-2).
4. a tool for expanding and tightening according to claim 3, wherein: the eccentric ring groove (24) is arc-shaped, and the radian of the bottom of the eccentric ring groove (24) deviating from the center of a circle is gradually increased.
5. The tool of claim 4, wherein: the second valve body (21) comprises a limiting seat (23), a guide seat (22) is arranged in the limiting seat (23), the first elastic piece (7-1) is arranged in the guide seat (22), and the guide seat (22) is arranged on the eccentric ring groove (24) in a sliding mode.
6. The tool of claim 5, wherein: the distance from the end face of the guide seat (22) of the second valve body (21) to the axial lead of the oil outlet channel (7) is smaller than the distance from the end face of the guide seat (22) of the first valve body (20) to the axial lead of the oil outlet channel (7).
7. A tool for expanding and tightening according to claim 1, wherein: the rotary positioning device is characterized in that a rotary positioning cover (11) is fixedly arranged below the cylinder body (5), a rotary limiting groove (12) is formed in the oil passing joint (4), a rotary positioning steel ball (13) is arranged below the rotary positioning cover (11), and the rotary positioning steel ball (13) can be rotatably arranged on the rotary limiting groove (12).
8. A tool for expanding and tightening according to claim 1, wherein: a pipe expanding piston (1-5) is arranged in the pipe expanding oil cylinder (8), a piston return spring (1-1) is arranged on the pipe expanding piston (1-5), the front end part of the pipe expanding piston (1-5) is connected with a thimble (1-4), the pipe expanding piston (1-5) is arranged on the thimble (1-4) in an extending way, a fixed chuck (1-6) and a movable chuck (1-7) arranged on the fixed chuck (1-6) are arranged outside the pipe expanding oil cylinder (8), the rear end part of the fixed chuck (1-6) is positioned in the pipe body of the pipe expanding oil cylinder (8), the thimble (1-4) is arranged at the front end part of the fixed chuck (1-6) and penetrates through the movable chuck (1-7), a disc spring (1-8) is arranged between the movable chuck (1-7) and the fixed chuck (1-6), the ejector pins (1-4) are abutted against the disc springs (1-8), and the ejector pins (1-4) are driven by the pipe expanding pistons (1-5) to overcome the elastic force of the disc springs (1-8) to drive forwards.
9. A tool for expanding and tightening according to claim 1, wherein: the reversing valve body (6) is connected and arranged on two sides of the oil passing joint (4), an oil outlet channel (7) is formed in the oil passing joint (4), a first oil hole (18) is formed in one end of the oil outlet channel (7), a second oil hole (19) matched with the first oil hole (18) is formed in one end of the reversing valve body (6), and the first oil hole (18) is communicated with the second oil hole (19).
10. The tool of claim 5, wherein: a limiting groove (25) is formed in the oil passing joint (4), and the limiting seat (23) is abutted to the limiting groove (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920242426.6U CN209773266U (en) | 2019-02-26 | 2019-02-26 | Pipe expanding and tightening two-in-one tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920242426.6U CN209773266U (en) | 2019-02-26 | 2019-02-26 | Pipe expanding and tightening two-in-one tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209773266U true CN209773266U (en) | 2019-12-13 |
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ID=68795847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920242426.6U Active CN209773266U (en) | 2019-02-26 | 2019-02-26 | Pipe expanding and tightening two-in-one tool |
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| Country | Link |
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| CN (1) | CN209773266U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109807250A (en) * | 2019-02-26 | 2019-05-28 | 台州巨力工具股份有限公司 | A kind of expander and tightening two-in-one tool |
-
2019
- 2019-02-26 CN CN201920242426.6U patent/CN209773266U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109807250A (en) * | 2019-02-26 | 2019-05-28 | 台州巨力工具股份有限公司 | A kind of expander and tightening two-in-one tool |
| CN109807250B (en) * | 2019-02-26 | 2023-12-05 | 台州巨力工具股份有限公司 | Two-in-one tool for expanding and tightening pipe |
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