CN216589375U

CN216589375U - Pull rod rear locking type oil cylinder

Info

Publication number: CN216589375U
Application number: CN202123111626.4U
Authority: CN
Inventors: 金灿灿; 罗国章
Original assignee: Zhejiang Jingsu Machine Tool Accessories Co ltd
Current assignee: Zhejiang Jingsu Machine Tool Accessories Co ltd
Priority date: 2021-12-10
Filing date: 2021-12-10
Publication date: 2022-05-24
Anticipated expiration: 2031-12-10

Abstract

The utility model relates to a locking-type hydro-cylinder behind pull rod, include the cylinder and accept a section of thick bamboo, a holding section of thick bamboo swing joint is on the cylinder inner wall, the pull rod is worn to establish and can dismantle the connection on a holding section of thick bamboo, it is equipped with locking adjustment portion on the holding section of thick bamboo, locking adjustment portion includes locking piece and annular nest block, the external screw thread has been seted up on the circumference outer wall of wherein one end tip of pull rod, set up the first internal thread with external screw thread matched with on the one of them end inner wall of a holding section of thick bamboo, set up on the inner wall of annular nest block with external screw thread complex second internal thread, the locking piece locks annular nest block on a holding section of thick bamboo. The double-thread locking is used, when the pull rod rotates, the first internal thread and the second internal thread are meshed with the pull rod together, so that the pull rod is difficult to rotate, the pull rod is fixed, meanwhile, the position of the pull rod on the bearing cylinder can be adjusted at will, and the adaptability of the pull rod is improved.

Description

Pull rod rear locking type oil cylinder

Technical Field

The application relates to the field of oil cylinders, in particular to a pull rod rear locking type oil cylinder.

Background

The oil cylinder is a hydraulic cylinder which is a hydraulic actuating element converting hydraulic energy into mechanical energy and performing linear reciprocating motion (or swinging motion). The rear end cover of the oil cylinder is an important component of the oil cylinder. The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion).

The pull rod is a piston rod which makes a linear reciprocating motion on the oil cylinder, and the traditional oil cylinder fixes the pull rod at the end part of the oil cylinder through threaded connection.

The above-mentioned related technical solutions have the following drawbacks: when being suitable for the lathe of different specifications with the hydro-cylinder, can have the problem of pull rod length suitability, lead to the suitability of pull rod relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to improve the adaptability of the pull rod on the oil cylinder, the application provides a pull rod rear locking type oil cylinder.

The application provides a locking-type hydro-cylinder adopts following technical scheme behind pull rod:

the utility model provides a locking-type hydro-cylinder behind pull rod, includes cylinder, a holding section of thick bamboo, piston and pull rod, piston cover establishes and fixed connection on the outer wall of a holding section of thick bamboo, the ring channel has been seted up on the circumference inner wall of cylinder, a holding section of thick bamboo is along the axis direction sliding connection who is on a parallel with the cylinder inner wall, a holding section of thick bamboo rotates to be connected on the cylinder inner wall, piston swing joint is on the ring channel, the piston separates into first chamber and the second chamber that do not communicate each other with the ring channel, set up first oil duct and the second oil duct that do not communicate each other in the cylinder, first oil duct intercommunication is external and the first chamber, the second oil duct communicates external and the second chamber, the pull rod is worn to establish and can dismantle the connection on a holding section of thick bamboo, its characterized in that: the bearing sleeve is provided with a locking adjusting portion, the locking adjusting portion comprises a locking piece and an annular sleeve block, an external thread is arranged on the circumferential outer wall of one end portion of the pull rod, a first internal thread matched with the external thread is arranged on one end inner wall of the bearing sleeve, a second internal thread matched with the external thread is arranged on the inner wall of the annular sleeve block, the first internal thread and the second internal thread are the same in rotation direction, the external thread is connected to the first internal thread and the second internal thread in a threaded mode, and the locking piece locks the annular sleeve block on the bearing sleeve.

Through adopting above-mentioned technical scheme, the method of installing the pull rod on the socket cylinder does, the external screw thread threaded connection who earlier goes up the pull rod is on first internal thread, according to the use of hydro-cylinder on different specification lathe, through rotating the position of pull rod adjustment pull rod on the socket cylinder, then with annular collets threaded connection on the pull rod, make annular collets press close to the socket cylinder, then use the locking piece with annular collets locking on the socket cylinder, use two screw thread lockings, when the pull rod takes place to rotate, first internal thread and second internal thread are in the same place the pull rod interlock, lead to the pull rod to be difficult to the rotation, thereby fix the pull rod, can adjust the position of pull rod on the socket cylinder at will, thereby increase the suitability of pull rod.

Preferably, the locking piece is a bolt, the bolt penetrates through the annular sleeve block and is in threaded connection with the receiving cylinder, and the bolt abuts against the annular sleeve block.

Through adopting above-mentioned technical scheme, through rotating the bolt, when using the annular nest block of different thickness sizes to lock the pull rod, the bolt homoenergetic adaptation and butt are on annular nest block.

Preferably, the first oil duct and the second oil duct are both annularly arranged, a first drainage channel and a second drainage channel which are not communicated with each other are arranged on the bearing barrel, the first oil duct is communicated with the first cavity through the first drainage channel, and the second oil duct is communicated with the second cavity through the second drainage channel.

By adopting the technical scheme, the first oil duct and the second oil duct are not directly communicated with the first cavity and the second cavity by bypassing the bearing cylinder, but are indirectly communicated with the first cavity and the second cavity by the first drainage duct and the second drainage duct, so that the bearing cylinder and the cylinder barrel are lubricated while oil drives the piston to move, and the bearing cylinder is better movably connected on the cylinder barrel.

Preferably, an oil receiving tank with an oil receiving cavity is arranged on the cylinder barrel, an oil seepage channel communicated with the oil receiving cavity is formed in the cylinder barrel, and oil seeped between the bearing barrel and the cylinder barrel flows into the oil receiving cavity through the oil seepage channel.

Through adopting above-mentioned technical scheme, when accepting a section of thick bamboo and rotating, have oil and spill over from accepting a section of thick bamboo and cylinder at rotatory in-process, connect the oil tank and can accept the oil of oozing to reduce this part oil outflow hydro-cylinder and cause the pollution to the environment.

Preferably, one end part of the bearing cylinder, which is close to the annular sleeve block, extends to the outer side of the cylinder barrel all the time.

Through adopting above-mentioned technical scheme, when annular nest block threaded connection was on the pull rod, operating personnel can be relatively light drive the annular nest block and remove to being close to the socket section of thick bamboo, can make things convenient for follow-up a series of operations of locking to the pull rod.

Preferably, the circumferential outer wall of one end of the bearing cylinder extending out of the cylinder barrel and the circumferential outer wall of the annular sleeve block are provided with anti-skid grains.

Through adopting above-mentioned technical scheme, accept the anti-skidding line on the section of thick bamboo and can make things convenient for operating personnel to hold between the fingers and hold and fix and hold a section of thick bamboo, make things convenient for pull rod threaded connection on holding a section of thick bamboo, anti-skidding line on the annular cover piece can make things convenient for operating personnel to hold between the fingers and hold annular cover piece to with annular cover piece threaded connection on the pull rod.

Preferably, the first cavity is located on one side of the piston far away from the annular sleeve block, the second cavity is located on one side of the piston close to the annular sleeve block, a first annular buffer groove is formed in the side face, facing the first cavity, of the piston, and the first drainage channel is communicated with the first annular buffer groove.

Through adopting above-mentioned technical scheme, when the hydro-cylinder was used, full oil in the first annular dashpot all the time, when oil injected first chamber, oil can not direct impact on the end wall of ring channel, and the impulsive force of the oil of injecting in the first drainage way can be offset to oil in the first annular dashpot to reduce the impact to the ring channel end wall, play certain guard action to the ring channel end wall.

Preferably, a second annular buffer groove only communicated with the second cavity is formed in the circumferential outer wall of the ring sleeve, and the second drainage channel is communicated with the second annular buffer groove.

Through adopting above-mentioned technical scheme, when the hydro-cylinder was used, because also be full of oil all the time in the second annular dashpot, when the second chamber was annotated to oil, oil can not direct impact on the circumference inner wall of ring channel, and the impulsive force of the oil of injecting in the second drainage way can be offset to oil in the second ring channel to reduce the impact to ring channel circumference inner wall, play certain guard action to the ring channel inner wall.

In summary, the present application includes at least one of the following beneficial technical effects:

through the arrangement of the locking adjusting part and the use of double-thread locking, when the pull rod rotates, the first internal thread and the second internal thread are meshed with the pull rod together, so that the pull rod is difficult to rotate, the pull rod is fixed, and meanwhile, the position of the pull rod on the bearing cylinder can be randomly adjusted, so that the adaptability of the pull rod is improved;

the first annular buffer groove is formed in the piston, when the oil cylinder is used, the first annular buffer groove is filled with oil all the time, when the oil is injected into the first cavity, the oil cannot directly impact the end wall of the annular groove, and the oil in the first annular buffer groove can counteract the impact force of the oil injected into the first drainage channel, so that the impact on the end wall of the annular groove is reduced, and a certain protection effect is achieved on the end wall of the annular groove;

drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a sectional view taken along line B-B in fig. 1.

Fig. 4 is a sectional view taken along line C-C of fig. 1.

Fig. 5 is a sectional view taken along line D-D in fig. 1.

Fig. 6 is a sectional view taken along line E-E of fig. 1.

Description of reference numerals: 1. a cylinder barrel; 11. a receiving cylinder; 111. a piston; 112. a first internal thread; 1111. a first annular buffer tank; 1112. a second annular buffer tank; 12. an annular groove; 121. a first chamber; 122. a second chamber; 131. a first drainage channel; 132. a second drainage channel; 141. a first oil injection head; 142. a second oil injection head; 151. a first oil passage; 152. a second oil passage; 16. an oil tank is connected; 161. an oil receiving cavity is formed; 17. a ball bearing; 18. an oil seepage channel; 2. a pull rod; 21. an external thread; 3. a lock adjustment portion; 31. an annular sleeve block; 32. a bolt; 33. anti-skid lines; 331. a second internal thread.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses a pull rod rear locking type oil cylinder.

Referring to fig. 1 and 2, the pull rod rear locking type oil cylinder of the embodiment comprises a cylinder barrel 1, a receiving barrel 11, a piston 111 and a pull rod 2, wherein the receiving barrel 11 is connected to the inner wall of the cylinder barrel 1 in a sliding mode along the axis direction of the cylinder barrel 1, a plurality of ball bearings 17 are embedded in the inner wall of the cylinder barrel 1 in a coaxial mode along the axis direction of the cylinder barrel 1, the receiving barrel 11 is sleeved with the ball bearings 17, and the receiving barrel 11 can be connected to the cylinder barrel 1 in a rotating mode through the ball bearings 17. The pull rod 2 is detachably connected to the bearing cylinder 11.

Referring to fig. 1 and 2, the piston 111 is coaxially sleeved and fixed on the receiving cylinder 11, the piston 111 and the receiving cylinder 11 are integrally formed, the inner wall of one end of the cylinder 1 is provided with an annular groove 12 along the circumferential direction, the axial direction of the annular groove 12 is parallel to the axial direction of the cylinder 1, the piston 111 is slidably connected to the annular groove 12 along the axial direction of the annular groove 12 along the receiving cylinder 11, the piston 111 can also be rotatably connected to the annular groove 12 along the receiving cylinder 11, and the annular groove 12 is divided into a first cavity 121 and a second cavity 122 which are not communicated by the piston 111.

Referring to fig. 2 and 3, the inner wall of the cylinder barrel 1 is provided with two first oil ducts 151 and two second oil ducts 152, the first oil ducts 151 and the second oil ducts 152 are both annularly arranged, the first oil ducts 151 and the second oil ducts 152 are both located on one side of the annular groove 12, and the two first oil ducts 151 and the two second oil ducts 152 are sequentially distributed along the axial direction of the cylinder barrel 1. Referring to fig. 3 and 4, the outer wall of the cylinder barrel 1 is fixedly connected with a first oil injection head 141 and a second oil injection head 142, the first oil injection head 141 is respectively communicated with the two first oil passages 151, and the second oil injection head 142 is respectively communicated with the two first oil passages 151.

Referring to fig. 2 and 3, two first drainage channels 131 are formed in the receiving cylinder 11, the two first drainage channels 131 respectively correspond to the two first oil ducts 151, and two ends of the first drainage channels 131 are respectively communicated with the corresponding first oil ducts 151 and the first cavity 121. A first annular buffer groove 1111 is formed in a side surface of the piston 111 facing the first chamber 121, and the first flow guide 131 is communicated with the first chamber 121 through the first annular buffer groove 1111.

Referring to fig. 4 and 5, two second drainage channels 132 are formed in the receiving cylinder 11, the two second drainage channels 132 respectively correspond to the two second oil channels 152, and two ends of the second drainage channel 132 respectively communicate with the corresponding second oil channels 152 and the second cavity 122. The circumferential outer wall of the ring sleeve is provided with a second annular buffer groove 1112, one side surface of the second annular buffer groove 1112 far away from the first cavity 121 extends to be communicated with the second cavity 122, and the second drainage channel 132 is communicated with the second cavity 122 through the second annular buffer groove 1112.

Referring to fig. 2 and 5, the two first drainage channels 131 and the two second drainage channels 132 are not communicated with each other.

The operating principle of the oil cylinder is that, oil is pressed into the first oil injection head 141, the oil flows into the first cavity 121 through the first oil duct 151, the first drainage channel 131 and the first annular buffer groove 1111 in sequence, at this time, the volume of the first cavity 121 is increased under the filling of the oil, the oil pushes the piston 111 towards one side of the second cavity 122, the oil in the second cavity 122 automatically flows back until the piston 111 moves to the side surface of one side of the piston 111 far away from the first cavity 121 and abuts against the end wall of one side of the annular groove 12 far away from the first annular buffer groove 1111, at this time, the oil exists in the second annular buffer groove 1112 all the time, and meanwhile, the piston 111 slides and drives the pull rod 2 to slide through the bearing cylinder 11. When the pull rod 2 needs to rotate, the external power source drives the pull rod 2 to rotate, and the pull rod 2 is rotatably connected to the cylinder barrel 1 through the bearing barrel 11.

The operation method for resetting the pull rod 2 comprises the following steps: press into fluid toward second oiling head 142, second chamber 122 is at the packing volume grow of fluid down, and fluid promotes piston 111 towards first chamber 121 one side, and the fluid that is arranged in first chamber 121 flows back automatically, moves to piston 111 and keeps away from one side of second chamber 122 side butt to one side end wall of ring channel 12 on, has fluid to exist all the time in first annular dashpot 1111 this moment, and piston 111 slides and drives pull rod 2 through a bearing section of thick bamboo 11 and reset.

Referring to fig. 1 and 2, one end of the receiving cylinder 11 away from the piston 111 is provided with a locking adjusting part 3, and the locking adjusting part 3 comprises a locking piece and an annular sleeve block 31. The outer thread 21 is arranged on the circumferential outer wall of one end of the pull rod 2, the first inner thread 112 matched with the outer thread 21 is arranged on the inner wall of one end, away from the piston 111, of the receiving cylinder 11, the second inner thread 331 matched with the outer thread 21 is arranged on the circumferential inner wall of the annular sleeve block 31, and the outer thread 21 is in threaded connection with the first inner thread 112 and the second inner thread 331. The locking element serves to lock the position of the annular block 31 on the receiving cylinder 11. The locking piece is a bolt 32, the bolt 32 penetrates through the annular sleeve block 31 and is in threaded connection with the receiving barrel 11, and the bolt 32 abuts against the annular sleeve block 31.

Referring to fig. 1 and 2, one end of the receiving cylinder 11, which is far away from the piston 111, extends to the outside of the cylinder barrel 1 all the time, and the circumferential outer wall of one end of the receiving cylinder 11, which extends out of the outside of the cylinder barrel 1, and the circumferential outer wall of the annular sleeve block 31 are provided with anti-slip grains 33.

The method for installing the pull rod 2 on the receiving cylinder 11 is that the external thread 21 of the pull rod 2 is firstly screwed on the first internal thread 112, the position of the pull rod 2 on the receiving cylinder 11 is firstly adjusted by rotating the pull rod 2 according to the use of the oil cylinder on machine tools with different specifications, and then the second internal thread 331 of the annular sleeve block 31 is screwed on the external thread 21 of the pull rod 2. When the pull rod 2 is screwed to the receiving cylinder 11 and the annular sleeve block 31, the first internal thread 112 and the second internal thread 331 are screwed in the same direction. The annular sleeve block 31 is rotated until the annular sleeve block 31 is close to the end part of the receiving cylinder 11, then the annular sleeve block 31 is locked on the receiving cylinder 11 by using the bolt 32, and when the pull rod 2 rotates, the first internal thread 112 and the second internal thread 331 are used for clamping the pull rod 2 together, so that the pull rod 2 is difficult to rotate, and the pull rod 2 is fixed.

Referring to fig. 1 and 6, an oil receiving tank 16 with an oil receiving cavity 161 is fixedly connected to the outer wall of the bottom end of the cylinder barrel 1, an oil leakage channel 18 communicated with the oil receiving cavity 161 is formed in the cylinder barrel 1, and oil leaked between the receiving barrel 11 and the cylinder barrel 1 flows into the oil receiving cavity 161 through the oil leakage channel 18. When accepting a section of thick bamboo 11 and rotating, can spill over from accepting a section of thick bamboo 11 and the gap of cylinder 1 at rotatory in-process, connect oil tank 16 can accept the oil that oozes in the below to it causes the pollution to reduce this part oil outflow hydro-cylinder to the environment.

The implementation principle of the pull rod rear locking type oil cylinder in the embodiment of the application is as follows: an operator can adjust the position of the pull rod 2 on the bearing cylinder 11 by rotating the pull rod 2 according to the use of the oil cylinder on machine tools with different specifications, then the pull rod 2 is locked on the bearing cylinder 11 by using the locking adjusting part 3, and the position of the pull rod 2 on the bearing cylinder 11 can be adjusted at will, so that the adaptability of the pull rod 2 is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A pull rod rear locking type oil cylinder comprises a cylinder barrel (1), a bearing barrel (11), a piston (111) and a pull rod (2), wherein the piston (111) is sleeved and fixedly connected on the outer wall of the bearing barrel (11), an annular groove (12) is formed in the circumferential inner wall of the cylinder barrel (1), the bearing barrel (11) is connected on the inner wall of the cylinder barrel (1) in a sliding mode along the axis direction parallel to the cylinder barrel (1), the bearing barrel (11) is connected on the cylinder barrel (1) in a rotating mode, the piston (111) is movably connected on the annular groove (12), the piston (111) divides the annular groove (12) into a first cavity (121) and a second cavity (122) which are not communicated with each other, a first oil duct (151) and a second oil duct (152) which are not communicated with each other are formed in the cylinder barrel (1), the first oil duct (151) is communicated with the outside and the first cavity (122), and the second oil duct (152) is communicated with the outside and the second cavity (122), pull rod (2) wear to establish and can dismantle the connection on bearing section of thick bamboo (11), its characterized in that: it is equipped with locking regulation portion (3) on a section of thick bamboo (11) to hold, locking regulation portion (3) include locking piece and annular nest of blocks (31), external screw thread (21) have been seted up on the circumference outer wall of one of them one end tip of pull rod (2), hold and set up on one of them one end inner wall of a section of thick bamboo (11) and first internal thread (112) with external screw thread (21) matched with, set up on the inner wall of annular nest of blocks (31) and screw thread (21) complex second internal thread (331), first internal thread (112) and second internal thread (331) are to the same soon, external screw thread (21) threaded connection is on first internal thread (112) and second internal thread (331), the locking piece locks annular nest of blocks (31) on holding a section of thick bamboo (11).

2. The drawbar back lock cylinder according to claim 1, wherein: the locking piece is a bolt (32), the bolt (32) penetrates through the annular sleeve block (31) and is in threaded connection with the receiving cylinder (11), and the bolt (32) abuts against the annular sleeve block (31).

3. The drawbar back lock cylinder according to claim 1, wherein: first oil duct (151) and second oil duct (152) all are cyclic annular setting, set up first drainage way (131) and second drainage way (132) that each other do not communicate on socket section of thick bamboo (11), first oil duct (151) communicate with first chamber (121) through first drainage way (131), second oil duct (152) communicate with second chamber (122) through second drainage way (132).

4. The drawbar back lock cylinder according to claim 1, wherein: the oil receiving cylinder is characterized in that an oil receiving tank (16) with an oil receiving cavity (161) is arranged on the cylinder barrel (1), an oil seepage channel (18) communicated with the oil receiving cavity (161) is formed in the cylinder barrel (1), and oil seeped between the bearing cylinder (11) and the cylinder barrel (1) flows into the oil receiving cavity (161) through the oil seepage channel (18).

5. The drawbar back lock cylinder according to claim 1, wherein: one end part of the bearing cylinder (11) close to the annular sleeve block (31) extends to the outer side of the cylinder barrel (1) all the time.

6. The pull rod rear lock cylinder according to claim 5, wherein: the bearing cylinder (11) extends out of the circumferential outer wall of one end of the outer side of the cylinder barrel (1) and the circumferential outer wall of the annular sleeve block (31) are provided with anti-skid grains (33).

7. The drawbar back lock cylinder according to claim 3, wherein: the first cavity (121) is located one side of piston (111) far away from annular nest block (31), the second cavity (122) is located one side of piston (111) near annular nest block (31), first annular buffer groove (1111) have been seted up to one side of piston (111) towards first cavity (121), first drainage way (131) intercommunication first annular buffer groove (1111).

8. The pull rod rear lock cylinder according to claim 7, wherein: and a second annular buffer groove (1112) only communicated with the second cavity (122) is formed in the circumferential outer wall of the piston (111), and the second drainage channel (132) is communicated with the second annular buffer groove (1112).