CN109807250B - Two-in-one tool for expanding and tightening pipe - Google Patents
Two-in-one tool for expanding and tightening pipe Download PDFInfo
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- CN109807250B CN109807250B CN201910143002.9A CN201910143002A CN109807250B CN 109807250 B CN109807250 B CN 109807250B CN 201910143002 A CN201910143002 A CN 201910143002A CN 109807250 B CN109807250 B CN 109807250B
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- 238000007493 shaping process Methods 0.000 claims abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 19
- 230000000149 penetrating effect Effects 0.000 claims 2
- 230000007246 mechanism Effects 0.000 abstract description 10
- 230000008878 coupling Effects 0.000 abstract 3
- 238000010168 coupling process Methods 0.000 abstract 3
- 238000005859 coupling reaction Methods 0.000 abstract 3
- 239000003921 oil Substances 0.000 description 127
- 230000009471 action Effects 0.000 description 7
- 239000010720 hydraulic oil Substances 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 230000008439 repair process Effects 0.000 description 1
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Abstract
The application belongs to the technical field of hydraulic tools, and particularly relates to a hydraulic tool integrating pipe expanding and tightening. The utility model provides an expand pipe and tighten up two unification instrument, includes the cylinder body, be equipped with expander and sliding sleeve and tighten up the ware in the cylinder body, be equipped with oil circuit switching-over mechanism between expander and the sliding sleeve and tighten up the ware, oil circuit switching-over mechanism includes the oil coupling, expander and sliding sleeve tighten up ware integrated into one piece and rotate the setting on the oil coupling, be equipped with the switching-over valve body in the cylinder body, be equipped with expander hydro-cylinder and sliding sleeve on the switching-over valve body respectively and tighten up the hydro-cylinder, the oil coupling internal shaping of crossing has the oil outlet channel, the oil outlet channel is through switching-over valve body intercommunication to expander hydro-cylinder and sliding sleeve tightening up the hydro-cylinder. The pipe expanding and tightening two-in-one tool is used by arranging the pipe expanding and the sliding sleeve into a whole through the oil way reversing mechanism, and the problem that the existing pipe expanding tool or tightening tool is used separately is solved.
Description
Technical Field
The application belongs to the technical field of hydraulic tools, and particularly relates to a hydraulic tool integrating pipe expanding and tightening.
Background
The pipe expanding tool has the functions of extruding and expanding one end of the pipe fitting, expanding the opening of the pipe fitting, and sleeving the sliding sleeve into the expanding end of the pipe fitting smoothly. However, the existing pipe expanding tool or tightening tool often has only a single function, so that the pipe expanding tool and the tightening tool are required to be separately arranged when the pipe expanding and tightening processes are required, which not only increases the cost, but also brings a plurality of inconveniences to users.
Disclosure of Invention
The application aims to provide a pipe expanding and tightening two-in-one tool, which is used by arranging the pipe expanding and the sliding sleeve into a whole through an oil way reversing mechanism, and solves the problem that the existing pipe expanding tool or tightening tool is used separately.
The purpose of the application is realized in the following way: the 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; one side of the pipe expander and one side of the sliding sleeve tightener are respectively provided with a reversing valve body, the upper side of the reversing valve body is respectively provided with a pipe expanding oil cylinder and a sliding sleeve tightening oil cylinder, and one side of the oil passing 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 with the sliding sleeve tightening cylinder through a second valve body in sequence; the oil outlet channel is communicated to the pipe expanding oil cylinder sequentially through the first valve body.
Preferably, one side of the oil passing joint is provided with an eccentric annular groove; the reversing valve body is internally provided with a first oil duct and a second oil duct communicated with the first oil duct, the oil outlet channel is communicated with the first oil duct, a first elastic piece is arranged in the first oil duct, a second elastic piece is arranged in the second oil duct, a limiting sealing piece is arranged between the first elastic piece and the second elastic piece, the first elastic piece and the second elastic piece are respectively abutted to two sides of the limiting sealing piece, and the second oil duct is communicated with the sliding sleeve tightening cylinder; the elastic force of the first elastic piece is larger than that of the second elastic piece.
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 gradually increases.
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 annular 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 is rotatably arranged on the rotary limiting groove.
Preferably, an expanding piston is arranged in the expanding cylinder, a piston return spring is arranged on the expanding piston, a thimble is connected to the front end of the expanding piston, the 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 expanding cylinder, the rear end of the fixed chuck is located in the tube body of the expanding cylinder, the thimble is arranged at the front end 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 is abutted to the disc spring, and the thimble is driven to overcome the elastic force of the disc spring through the expanding piston to drive the thimble to drive forwards.
Preferably, the reversing valve body is connected and arranged at 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, the oil passing connector is provided with a limiting groove in a forming mode, and the limiting seat is abutted to the limiting groove.
Compared with the prior art, the application has the following outstanding and beneficial technical effects: when the tool is used, the reversing mechanism is rotated by 180 degrees, two functions of the pipe expander and the sliding sleeve tightener can be used on the same tool, 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, the two cylinders are used for driving respectively, the oil consumption is reduced, and the driving force is strong.
Drawings
FIG. 1 is a perspective view of a tool for tightening a pipe and a sliding sleeve in accordance with an embodiment of the present application.
Fig. 2 is a schematic diagram of an oil path reversing mechanism in an embodiment of the application.
Fig. 3 is a partial enlarged view at fig. 2A.
Fig. 4 is a horizontal cross-section of fig. 1 (expander and sleeve tightener).
Reference numerals: 1-a tube expander; 1-4 ejector pins; 1-5 pipe expanding pistons; 1-6, fixing a chuck; 1-7 movable chucks; 1-8 disc springs; 2-a sliding sleeve tightener; 3-an oil way reversing mechanism; 4-an oil passing joint; 5-a cylinder; 6-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 a second elastic member; 8-a pipe expanding oil cylinder; 9, tightening the oil cylinder by the sliding sleeve; 9-1 sliding sleeve tightening piston; 10-limiting seals; 11-rotating the positioning cover; 12-a rotation limiting groove; 13-rotating the positioning steel ball; 15-an oil inlet hole; 16-locating pins; 17-elastic pins; 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-limiting seats; 24-eccentric ring grooves; 25-limit groove.
Detailed Description
The following describes the embodiments of the present application in further detail with reference to the accompanying drawings.
The realization of the sliding sleeve tightener disclosed by the application is achieved by finding an application number as follows: 201621029886.3A quick connection device for a pipe expander and a sliding sleeve tightening tool is disclosed in China patent, wherein the sliding sleeve tightening tool in the comparison document extrudes one end of a pipe fitting to expand the opening of the pipe fitting, so that the opening of the pipe fitting can be expanded, and the sliding sleeve tightening tool in the comparison document can be directly adopted.
The pipe expanding and tightening two-in-one tool 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 joint 4; the oil way reversing mechanism 3 comprises an oil passing joint 4, wherein the expander 1 and the sliding sleeve tightener 2 are integrally formed and rotatably arranged on the oil passing joint 4, a reversing valve body 6 is arranged in the cylinder body 5, an expanding cylinder 8 and a sliding sleeve tightening 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 with the sliding sleeve tightening oil cylinder 9 sequentially through the second valve body 21; the reversing mechanism is rotated 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 sequentially through the first valve body 20.
An eccentric annular 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 the limiting seat 23 to limit the position of the oil passing joint without shaking, and after limiting, the guide seat 22 can be pushed in the limiting seat 23, the second valve body 21 comprises the limiting seat 23 which is abutted against the limiting groove 25, and one end of the guide seat 22, provided with the second oil hole 19, of the guide seat 22 is abutted against the eccentric annular groove 24; the limiting seat 23 is internally provided with an oil duct I6-1 and an oil duct II 6-2 communicated with the oil duct I6-1, the oil outlet channel 7 is communicated with the oil duct I6-1, a first elastic piece 7-1 is arranged in the oil duct I6-1, a second elastic piece 7-2 is arranged in the oil duct II 6-2, a limiting sealing piece 10 is arranged between the first elastic piece 7-1 and the second elastic piece 7-2, the first elastic piece 7-1 and the second elastic piece 7-2 are respectively abutted against two sides of the limiting sealing piece 10, and the oil duct II 6-2 is communicated with a sliding sleeve tightening cylinder 9, so that an oil way tightened by a sliding sleeve is opened; the first elastic member 7-1 in the first valve body 20 presses the limit seal member 10 in the first valve body 20, the limit seal member 10 in the first valve body 20 abuts against the second oil passage 6-2 to form a seal, 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, the two cylinders are used for driving, the oil consumption is reduced, and the driving force is strong.
The elastic force of the first elastic piece 7-1 must be greater than that of the second elastic piece 7-2, the second elastic piece 7-2 is a small spring, the small spring is arranged in the oil duct II 6-2, the first elastic piece 7-1 is a large spring, and the large spring is arranged in the oil duct I6-1.
The limiting seal 10 is a sealing steel ball.
The design of the eccentric annular groove 24 enables the large spring not to be in a compression state any more, the large spring is abutted on the eccentric annular groove 24 through the guide seat 22, the eccentric annular groove 24 is arc-shaped, the radian of the bottom of the eccentric annular groove 24 deviating from the center of a circle gradually becomes larger, when the oil joint 4 is rotated, the large spring clamped in the radian is slowly close to the center of the bottom of the eccentric annular 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 not to be abutted on the oil duct II 6-2 under the elastic force of the small spring, the small spring pushes the sealing steel ball, the sealing steel ball pushes the large spring, the guide seat 22 is pushed by the large spring, the guide seat 22 is pushed to the eccentric annular groove 24 forwards, at the moment, an oil way is opened, the oil outlet channel 7, the oil duct I6-1 and the oil duct II 6-2 are communicated into the sliding sleeve tightening cylinder 9, hydraulic oil is conveyed to the oil duct I6-1 through the oil outlet channel 7, and hydraulic oil enters the sliding sleeve tightening cylinder 9 along the oil duct II 6-2.
The tube expanding cylinder 8 is internally provided with a tube expanding piston 1-5, the tube expanding piston 1-5 is provided with a piston return spring 1-1, the front end part of the piston rod 2 is connected with a thimble 1-4, the tube expanding piston 1-5 is arranged on the thimble 1-4 in an extending mode, the tube expanding cylinder 8 is externally provided with a fixed chuck 1-6 and a movable chuck 1-7 arranged on the fixed chuck 1-6, the rear end part of the fixed chuck 1-6 is positioned in a tube body of the tube expanding cylinder 8, the thimble 1-4 is provided with a front end part of the fixed chuck 1-6, a disc spring 1-8 is arranged between the movable chuck 1-7 and the fixed chuck 1-6, the thimble 1-4 penetrates through the movable chuck 1-7, the thimble 1-4 is abutted on the disc spring 1-8, and the thimble 1-4 is driven to drive forwards by the tube expanding piston 1-5 against the elasticity of the disc spring 1-8.
The dish spring has the advantages that:
1. the disc springs are subjected to extremely large loads in a small space. The deflection per unit volume of the belleville spring can be greater than other types of springs. The shock absorbing and absorbing device has good shock absorbing and absorbing capacity, and particularly has more remarkable effects of absorbing impact and dissipating energy due to the action of surface friction resistance when the superposition combination is adopted.
2. The belleville springs have a variable stiffness characteristic. The ratio of the height of the truncated cone in the disc to the thickness of the disc is changed to obtain different spring characteristic curves which can be linear, gradually increased, gradually decreased or a combination of the linear and gradually increased and gradually decreased spring characteristic curves. In addition, the variable stiffness characteristic can be obtained by combining discs with different thicknesses or combining discs with different numbers of stacked discs.
3. The disc spring can obtain different bearing capacity and characteristic curves due to changing the number of discs or the combination form of the discs, so that discs with different sizes can be suitable for a wide application range, and the preparation and management of spare parts are easier.
4. In a combination spring which is subjected to a large load, the size of each disc is not large, which is advantageous for manufacturing and heat treatment. When some discs are damaged, only individual replacement is needed, thus facilitating maintenance and repair.
5. The correctly designed and manufactured belleville spring has long service life.
6. Since the belleville springs are annular, the forces are transmitted concentrically.
Because of the advantages, the application adopts the disc spring, and the disc spring 1-8 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 die, 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, and the thimble 1-4 and the pipe expanding piston 1-5 are fixed and limited through the elastic pin 17, so that the quality of pipe expanding is ensured, and a limiting check ring is further arranged on the pipe expanding piston 1-5 and limits the moving distance of the pipe expanding piston 1-5.
The oil inlet ends of the pipe expander and the sliding sleeve tightener are provided with oil inlet holes 15, and the pipe expander 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 cylinder body 5 below has set firmly rotary positioning lid 11, has formed rotatory spacing groove 12 on the oil joint 4, rotary positioning lid 11 below is equipped with the rotary positioning steel ball 13 that the rotatable setting was on rotatory spacing groove 12, and cylinder body 5 passes through rotary positioning steel ball 13 and rotates on round oil joint 4.
The cylinder body 5 rotates 180 degrees through the rotary positioning steel ball 13, when the tower-clamping sound is heard, the fact that the rotary positioning steel ball 13 is clamped into the rotary limiting groove 12 is proved, the steel ball is positioned, 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.
The tube expanding cylinder 8 is internally provided with a tube expanding piston 1-5, the tube expanding piston 1-5 is provided with a piston return spring 1-1, the front end part of the piston rod 2 is connected with a thimble 1-4, the tube expanding piston 1-5 is arranged on the thimble 1-4 in an extending mode, the tube expanding cylinder 8 is externally provided with a fixed chuck 1-6 and a movable chuck 1-7 arranged on the fixed chuck 1-6, the rear end part of the fixed chuck 1-6 is positioned in a tube body of the tube expanding cylinder 8, the thimble 1-4 is provided with a front end part of the fixed chuck 1-6, a disc spring 1-8 is arranged between the movable chuck 1-7 and the fixed chuck 1-6, the thimble 1-4 penetrates through the movable chuck 1-7, the thimble 1-4 is abutted on the disc spring 1-8, and the thimble 1-4 is driven to drive forwards by the tube expanding piston 1-5 against the elasticity of the disc spring 1-8.
A positioning pin 16 is provided between the cylinder 5 and the rotary positioning cover 11, so that the cylinder 5 does not shift when rotating.
When the rotary positioning steel ball 13 at the pipe expander end rotates to the rotary limiting groove 12, the limiting sealing piece 10 is sprung open under the elastic action of the second elastic piece 7-2, an oil way is opened, hydraulic oil is conveyed to the oil way I6-1 through the oil outlet channel 7, and the hydraulic oil enters the sliding sleeve tightening oil cylinder 9 along the oil way II 6-2; at this time, the limiting 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 path at the end of the sliding sleeve tightener is closed.
The sliding sleeve tightening cylinder 9 is internally provided with a sliding sleeve tightening piston 9-1, and the sliding sleeve tightening piston 9-1 drives the pipe expander 1.
The distance from the end surface of the guide seat 22 of the second valve body 21 to the axial line of the oil outlet channel 7 is smaller than the distance from the end surface of the guide seat 22 of the first valve body 20 to the axial line of the oil outlet channel 7.
The specific working process of the scheme is as follows:
the rotary positioning steel ball 13 at the end of the pipe expander is rotated to the rotary limiting groove 12, the large spring is abutted to the eccentric annular groove 24 through the guide seat 22, so that the large spring can extend, the sealing steel ball at the tightening end of the sliding sleeve is prevented from being abutted to the oil duct II 6-2 under the action of the elastic force of the small spring, the small spring pushes the sealing steel ball, the sealing steel ball pushes the large spring, the guide seat 22 is pushed by the large spring, the guide seat 22 is pushed to the eccentric annular groove 24 forwards, at the moment, the oil way is opened, the oil outlet channel 7, the oil duct I6-1 and the oil duct II 6-2 are communicated to the sliding sleeve tightening 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 cylinder 9 along the oil duct II 6-2; at this time, the sealing steel ball arranged at the expander end of the oil passing joint 4 is tightly closed under the action of the elastic force of a large spring, and the sealing steel ball is abutted against the sealing port of the oil duct II 6-2, so that the sealing is formed between the oil duct II 6-2 and the oil duct I6-1, the oil way at the expander end is closed, and the sliding sleeve tightener 2 can be used only by pressing the starting button.
Next, if the pipe expander 1 is to be replaced for working, the cylinder body 5 rotates 180 degrees, when the tower jamming sound is heard, the steel ball is positioned, the pipe expander 1 is aligned with the starting switch, the oil outlet of the oil outlet channel 7 is communicated with the oil duct I6-1 at the end of the pipe expander, the steel ball of the pipe expander is sprung open under the action of the small spring force, the oil way is opened, and oil enters the pipe expanding oil cylinder; the steel ball at the tightening end of the sliding sleeve is tightly closed under the action of the elastic force of the large spring, and the tightening oil way of the sliding sleeve is closed. At this time, the expander 1 can be used only by pressing the start button, the expander cylinder 8 drives the expander piston 1-5 to enable the ejector pin 1-4 to move forwards, the ejector pin 1-4 overcomes the elasticity 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 expansion is finished, the disc spring rapidly ejects to separate the ejector pin from the expander die, and then the ejector pin is moved backwards and retreated through the piston return spring 1-1, namely the expander head 34 can be automatically folded after the pipe expansion operation is finished, so that the next pipe expansion operation is facilitated.
The application integrates the pipe expanding function and the tightening function, so that the pipe expanding device not only can diversify the functions and reduce the cost, but also has better convenience in carrying and operation.
The foregoing is merely a preferred embodiment of the present application, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present application, and these modifications and substitutions should also be considered as being within the scope of the present application.
Claims (4)
1. The utility model provides an expand pipe and tighten up two unification instrument, includes cylinder body (5), its characterized in that: the cylinder body (5) is internally provided with a pipe expander (1), a sliding sleeve tightener (2) and an oil passing joint (4), and the cylinder body (5) is rotatably arranged around the oil passing joint (4); one side of the pipe expander (1) and one side of the sliding sleeve tightener (2) are respectively provided with a reversing valve body (6), the upper side of the reversing valve body (6) is respectively provided with a pipe expanding oil cylinder (8) and a sliding sleeve tightening oil cylinder (9), 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), and an oil outlet channel (7) is formed in the oil passing joint (4);
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 oil outlet channel (7) is communicated with the sliding sleeve tightening cylinder (9) through a second valve body (21); the oil outlet channel (7) is communicated to the pipe expanding oil cylinder (8) through a first valve body (20);
limiting grooves (25) are formed in two sides of the oil passing joint (4), limiting seats (23) are abutted to the limiting grooves (25), guide seats (22) are arranged in the limiting seats (23), eccentric annular grooves (24) are formed in one side of the oil passing joint (4) corresponding to the second valve body (21), the guide seats (22) are slidably arranged on the eccentric annular grooves (24), the eccentric annular grooves (24) are arc-shaped, and the radian of the bottoms of the eccentric annular grooves (24) deviating from the center of a circle gradually increases;
an oil duct I (6-1) and an oil duct II (6-2) communicated with the oil duct I (6-1) are formed in the guide seat (22), an oil outlet channel (7) is communicated with the oil duct I (6-1), a first elastic piece (7-1) is arranged in the oil duct I (6-1), a second elastic piece (7-2) is arranged in the oil duct II (6-2), a limiting sealing piece (10) is arranged between the first elastic piece (7-1) and the second elastic piece (7-2), the first elastic piece (7-1) and the second elastic piece (7-2) are respectively abutted against two sides of the limiting sealing piece (10), and the oil duct II (6-2) is communicated with a sliding sleeve tightening cylinder (9); the elastic force of the first elastic piece (7-1) is larger than that of the second elastic piece (7-2), and the first elastic piece (7-1) is arranged in the guide seat (22);
the cylinder body (5) below has set firmly rotatory locating cover (11), and the shaping has rotatory spacing groove (12) on oily joint (4), rotatory locating cover (11) below is equipped with rotatory location steel ball (13), and rotatory location steel ball (13) rotatable setting is on rotatory spacing groove (12).
2. The two-in-one tool for expanding and tightening of pipes as set forth in claim 1, 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).
3. The two-in-one tool for expanding and tightening of pipes as set forth in claim 1, wherein: the pipe expanding cylinder (8) is internally provided with a pipe expanding piston (1-5), the pipe expanding piston (1-5) is provided with a piston return spring (1-1), 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 mode, the pipe expanding cylinder (8) is externally provided with a fixed chuck (1-6) and a movable chuck (1-7) arranged on the fixed chuck (1-6), the rear end part of the fixed chuck (1-6) is located in the pipe body of the pipe expanding cylinder (8), the thimble (1-4) is arranged at the front end part of the fixed chuck (1-6) in a penetrating mode and is provided with a disc spring (1-8) in a penetrating mode, the movable chuck (1-7) and the fixed chuck (1-6), the thimble (1-4) is abutted to the thimble (1-8), and the movable chuck (1-5) drives the disc spring (1-8) to overcome the elasticity of the thimble.
4. The two-in-one tool for expanding and tightening of pipes as set forth in claim 1, wherein: the reversing valve body (6) is connected and arranged on two sides of 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).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910143002.9A CN109807250B (en) | 2019-02-26 | 2019-02-26 | Two-in-one tool for expanding and tightening pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910143002.9A CN109807250B (en) | 2019-02-26 | 2019-02-26 | Two-in-one tool for expanding and tightening pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109807250A CN109807250A (en) | 2019-05-28 |
| CN109807250B true CN109807250B (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910143002.9A Active CN109807250B (en) | 2019-02-26 | 2019-02-26 | Two-in-one tool for expanding and tightening pipe |
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| CN (1) | CN109807250B (en) |
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| CN203944741U (en) * | 2014-07-28 | 2014-11-19 | 黄金国 | The portable small-sized hydraulic extend pipe device of one-hand operation |
| CN205533543U (en) * | 2016-04-22 | 2016-08-31 | 合肥长源液压股份有限公司 | Hydro -cylinder with integrated hydraulic pressure lock cylinder end |
| CN106180432A (en) * | 2016-08-31 | 2016-12-07 | 台州巨力工具有限公司 | A kind of expander tightener |
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| CN106424393A (en) * | 2016-08-31 | 2017-02-22 | 台州巨力工具有限公司 | Quick connecting device of pipe expander and sliding sleeve tightening tool |
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