CN216241588U

CN216241588U - Hydraulic locking cylinder capable of automatically rotating and stretching

Info

Publication number: CN216241588U
Application number: CN202122482326.0U
Authority: CN
Inventors: 马晓明; 王建; 王焜盟; 赵清志; 林存建; 李松; 刘磊; 杨刚
Original assignee: Beijing Ablyy Technology Development Co ltd
Current assignee: Beijing Ablyy Technology Development Co ltd
Priority date: 2021-10-14
Filing date: 2021-10-14
Publication date: 2022-04-08
Anticipated expiration: 2031-10-14

Abstract

The utility model relates to a hydraulic locking cylinder capable of automatically rotating and stretching, which comprises a cylinder body, a piston mechanism and a locking piece, wherein the piston mechanism is arranged in the cylinder body and can move in the cylinder body, the locking piece is connected to the outer end of the piston mechanism, the piston mechanism comprises a first piston assembly and a second piston assembly matched with the first piston assembly, a hydraulic system used for driving the first piston assembly and the second piston assembly to stretch and rotate in the cylinder body in a matched mode is arranged outside the cylinder body, and the locking piece is driven to automatically stretch and rotate so as to clamp or loosen an upper roller system of a straightening machine. The hydraulic locking cylinder capable of automatically rotating and stretching is convenient for rapidly clamping and loosening the upper roll system of the straightening machine, manual operation is not needed in the whole process, and the hydraulic locking cylinder is simple, reliable and convenient and saves time for rapidly changing rolls.

Description

Hydraulic locking cylinder capable of automatically rotating and stretching

Technical Field

The utility model relates to the field of hydraulic drive, in particular to a hydraulic locking cylinder capable of automatically rotating and stretching.

Background

The hydraulic locking cylinder is a main component of the plate and strip straightening machine, and is used as an adjusting element for clamping and loosening an upper roll system of the straightening machine in the steel plate straightening process so as to facilitate replacement of the straightening roll.

At present, the prior domestic medium plate straightener is old and is greatly limited by the traditional design structure. The existing clamping device is generally a hydraulic spring clamping device and comprises an oil cylinder, a piston, a handle, a spring and a T-shaped bolt, wherein one end of the T-shaped bolt is connected with the piston, the other end of the T-shaped bolt is connected with an upper roller seat frame, the bolt and the piston can move axially, the handle is fixedly connected with the bolt, the handle is rotated to drive the bolt to rotate, and then the upper roller seat frame is loosened or clamped. However, the spring in the clamping device is easy to lose efficacy, so that the upper roll seat frame and the upper cross beam cannot be smoothly loosened or clamped, and the clamping device finally needs to be manually operated to pull the handle in operation, so that the roll changing time is prolonged.

Disclosure of Invention

The utility model aims to provide a hydraulic locking cylinder capable of automatically rotating and stretching, so as to realize automatic clamping and loosening of an upper roll system of a straightening machine and facilitate quick replacement of a straightening roll.

In order to achieve the purpose, the technical scheme of the utility model is as follows: the utility model provides a but flexible hydraulic locking cylinder of autogiration, includes the cylinder body, arranges in the cylinder body and can be in the piston mechanism of the activity of cylinder body and connect the lock of piston mechanism outer end and hold the piece, piston mechanism include first piston assembly and with first piston assembly complex second piston assembly, the cylinder body outside is equipped with and is used for ordering about first piston assembly and second piston assembly flexible, pivoted hydraulic system of cooperation in the cylinder body to drive the lock and hold an automatic flexible, rotation, with the chucking or loosen the last roller system of straightener.

As a further improvement, one end of the first piston assembly penetrates through the through hole in the center of the cylinder cover to be connected with the locking part, the other end of the first piston assembly forms a connecting end with a regular polygonal structure to be connected with the second piston assembly in a matched mode, the second piston assembly comprises a second piston and a rotary piston fixedly connected with the second piston, a connecting hole matched with the connecting end of the piston rod is formed in the center of one end face of the second piston, the connecting end of the piston rod can stretch in and out of the connecting hole, a section of guide track groove is formed in the side wall of the rotary piston, and a fixed abutting part is arranged in the guide track groove so as to rotate along the abutting part along the track of the guide track groove around the axis of the rotary piston through the rotary piston, and further drive the first piston assembly to rotate.

As a further improvement, the first piston assembly comprises a first piston and a piston rod fixedly connected to the first piston, one end of the piston rod is connected with the locking piece, and the other end of the piston rod forms the connecting end with a regular polygon structure.

As a further improvement, the abutting piece comprises a steel ball which is arranged in the guide track groove and has a preset sliding gap with the guide track groove and an abutting rod connected to the steel ball, and the end part of the abutting rod is fixed on the cavity wall of the cylinder body.

As a further improvement, the section of the connecting end at the end of the piston rod is square, and the connecting hole formed in the center of the second piston is a square hole, so that the connecting end of the piston rod is connected with the connecting hole of the second piston in a matching manner.

As a further improvement, a first oil hole, a second oil hole and a third oil hole are formed in the peripheral wall of the cylinder body, each oil hole is correspondingly connected with a hydraulic system through an oil conveying pipe, a first oil cavity is formed between one side of the first piston and the cavity of the cylinder body, the first oil cavity is communicated with the first oil hole, a second oil cavity is formed in the cavity between the first piston and the second piston, the second oil cavity is communicated with the second oil hole, a third oil cavity is formed between the second piston and the cavity of the cylinder body, and the third oil cavity is communicated with the third oil hole.

As a further improvement, the locking piece is in an '' type structure and comprises a connecting rod and a locking rod formed on the connecting rod, and the connecting rod is fixedly connected with the end of the piston rod.

As a further improvement, the peripheral wall of the first piston abuts against the cavity wall of the cylinder body, the peripheral wall of the second piston abuts against the cavity wall of the cylinder body, and sealing gaskets are arranged on the peripheral walls of the two pistons.

As a further improvement, the cylinder block includes a bottom wall, a cylinder head disposed opposite to the bottom wall, and the peripheral wall formed between the bottom wall and the cylinder head, the cavity being formed between the bottom wall, the cylinder head, and the peripheral wall.

As a further improvement, a through hole is formed in the center of the bottom wall of the cylinder body, a sealing ring is arranged at the through hole, a guide rod is arranged at the center of the bottom of the rotary piston, and the guide rod penetrates through the through hole in the center of the bottom wall.

The technical scheme of the utility model has the following beneficial effects: the hydraulic locking cylinder capable of automatically rotating and stretching is convenient for rapidly clamping and loosening the upper roll system of the straightening machine, manual operation is not needed in the whole process, and the hydraulic locking cylinder is simple, reliable and convenient and saves time for rapidly changing rolls.

Drawings

Fig. 1 is a schematic structural view of a hydraulic lock cylinder of the present invention.

Fig. 2 is a structural schematic diagram of a locking state of the hydraulic locking cylinder.

Fig. 3 is a structural schematic diagram of the hydraulic locking cylinder in an unlocking state.

Figure number and name: 10. the piston comprises a cylinder body, 11, a bottom wall, 111, a through hole, 112, a sealing ring, 12, a cylinder cover, 121, a perforation, 13, a peripheral wall, 131, a first oil hole, 132, a second oil hole, 133, a third oil hole, 20, a piston mechanism, 21, a first piston assembly, 211, a first piston, 2111, a first oil chamber, 2112, a second oil chamber, 2113, a third oil chamber, 212, a piston rod, 2121, a connecting end, 213, a sealing gasket, 22, a second piston assembly, 221, a second piston, 2211, a connecting hole, 222, a rotary piston, 2221, a guide rod, 2222, a guide track groove, 2223, a holding piece, 2224, a steel ball, 2225, a holding rod, 30, a locking piece, 31, a connecting rod, 32 and a locking rod.

Detailed Description

The embodiments of the present invention will be described in detail below with reference to the drawings and examples.

Referring to fig. 1, the hydraulic locking cylinder capable of automatically rotating and retracting of the present embodiment includes a cylinder body 10, a piston mechanism 20 disposed in the cylinder body 10 and capable of retracting and rotating in the cylinder body 10, a locking member 30 connected to an outer end of the piston mechanism 20, and a hydraulic system (not shown) disposed outside the cylinder body 10 for driving the piston mechanism 20 to retract and rotate in the cylinder body 10, wherein the piston mechanism 20 drives the locking member 30 to retract and rotate, thereby clamping or releasing an upper roller system of a straightener to rapidly change a straightener roller.

A cavity is formed in the cylinder 10 for accommodating the piston mechanism 20 and allowing the piston mechanism 20 to extend and retract and rotate in the cavity. Specifically, the cylinder block 10 includes a bottom wall 11, a cylinder head 12 disposed opposite to the bottom wall 11, and a peripheral wall 13 formed between the bottom wall 11 and the cylinder head 12, the cavity being formed between the bottom wall 11, the cylinder head 12, and the peripheral wall 13.

A through hole 111 is formed in the center of the bottom wall 11, and a sealing ring 112 is arranged in the through hole to allow one end of the piston mechanism 20 to pass through; the center of the cylinder cover 12 is provided with a through hole 121, and the through hole is provided with a sealing ring 112 for the other end of the piston mechanism 20 to pass through, and the sealing ring 112 is arranged to prevent oil leakage. The peripheral wall 13 is opened with a first oil hole 131, a second oil hole 132 and a third oil hole 133, each of which is connected to the hydraulic system.

The piston mechanism 20 is movably disposed in the cavity of the cylinder 10, and the piston mechanism 20 includes a first piston assembly 21 and a second piston assembly 22 engaged with the first piston assembly 21, so that the second piston assembly 22 drives the first piston assembly 21 to rotate in the cavity of the cylinder 10, and further drives the locking member 30 to rotate.

The first piston assembly 21 includes a first piston 211 and a piston rod 212 fixedly connected to the first piston 211, a peripheral wall of the first piston 211 abuts against a wall of a cavity of the cylinder 10, a sealing washer 213 is disposed on the peripheral wall of the first piston 211, one end of the piston rod 212 passes through the through hole 121 at the center of the cylinder cover 12 to be connected to the locking member 30, the other end of the piston rod 212 forms a connecting end 2121 with a cross section in a regular polygon structure to be connected to the second piston assembly 22 in a matching manner, the connecting end 2121 is in a regular polygon structure, and in this embodiment, the connecting end 2121 is preferably in a square structure.

The second piston assembly 22 includes a second piston 221 and a rotary piston 222 fixedly connected to the second piston 221, a peripheral wall of the second piston 221 abuts against a cavity wall of the cylinder 10, a sealing washer 213 is disposed on the peripheral wall of the second piston 221, a connecting hole 2211 matched with the connecting end 2121 of the piston rod 212 is disposed at a center of one end face of the second piston 221, the connecting end 2121 of the piston rod 212 is capable of extending and contracting in the connecting hole 2211, the connecting hole 2211 is a regular polygonal hole, and in this embodiment, the connecting hole 2211 is preferably a square hole.

The rotary piston 222 is fixed at the center of the other end face of the second piston 221, a guide rod 2221 is arranged at the center of the bottom of the rotary piston 222, and the guide rod 2221 passes through the through hole 111 at the center of the bottom wall 11, so that the state of the rotary piston can be judged by observing the motion state of the guide rod 2221. A section of guide track groove 2222 is formed in the side wall of the rotary piston 222, a holding part 2223 is disposed in the guide track groove 2222, the holding part 2223 includes a steel ball 2224 disposed in the guide track groove 2222 and having a predetermined sliding gap with the guide track groove 2222, and a holding rod 2225 connected to the steel ball 2224, and an end of the holding rod 2225 is fixed to the cavity wall of the cylinder 10.

A first oil chamber 2111 is formed between the first piston 211 and the cavity of the cylinder block 10, the first oil chamber 2111 and the first oil hole 131 communicate with each other, a second oil chamber 2112 is formed in the cavity between the first piston 211 and the second piston 221, the second oil chamber 2112 and the second oil hole 132 communicate with each other, a third oil chamber 2113 is formed between the second piston 221 and the cavity of the cylinder block 10, and the third oil chamber 2113 and the third oil hole 133 communicate with each other.

Referring to fig. 2, oil enters the third oil chamber 2113 through the third oil hole 133, oil in the second oil chamber 2112 returns through the second oil hole 132, the first oil hole 131 is closed, the rotary piston 222 rotates along the steel ball 2224 of the holding part 2223 along the track of the guide track groove 2222 through the pressure of the oil around the axis of the rotary piston 222, and drives the second piston 221 to rotate, the piston rod 212 matched with the connecting hole 2211 of the second piston 221 rotates, and then the locking part 30 is driven to rotate, when the guide track groove 2222 on the rotary piston 222 moves from one end to the other end along the steel ball 2224, the locking part 30 rotates 90 °, and the first piston assembly 21 drives the locking part 30 to retract, so as to lock the upper roller system of the straightening machine.

Referring to fig. 3, the first piston assembly 21 drives the locking member 30 to extend, oil enters the second oil chamber 2112 along the second oil hole 132 through the hydraulic system, the oil in the third oil chamber 2113 returns through the third oil hole 133, the first oil hole 131 is closed, the second piston 221 rotates through the pressure of the oil, and drives the rotary piston 222 to rotate around the axis of the rotary piston 222 along the trajectory of the steel ball 2224 of the abutting member 2223 along the guiding trajectory groove 2222, the piston rod 212 matched with the connecting hole 2211 of the second piston 221 rotates, and then the locking member 30 is driven to rotate, when the guiding trajectory groove 2222 on the rotary piston 222 moves from the other end to one end along the steel ball 2224 (opposite to the rotating direction in the locking process), the locking member 30 rotates by 90 degrees, so as to release the upper roller system of the straightening machine.

The locking piece 30 is arranged at the end part of the piston rod 212 to clamp or release the upper roller system of the straightening machine, in particular, the locking piece 30 is in an -shaped structure, the locking piece 30 comprises a connecting rod 31 and a locking rod 32 formed on the connecting rod 31, the connecting rod 31 is fixedly connected with the end part of the piston rod 212, so that the locking rod 32 rotates to match the first piston assembly 21 to drive the locking piece 30 to retract and extend, and further the upper roller system is clamped or released.

The hydraulic system is connected to the outside of the cylinder body 10, so as to feed oil and return oil into the oil cavity of the cylinder body 10 through the corresponding oil hole, further drive the piston mechanism 20 to automatically stretch and rotate in the cylinder body 10, and drive the locking member 30 to stretch and rotate, so as to clamp or loosen the upper roller system of the straightener. In this embodiment, the hydraulic system is a hydraulic valve stand, and the first oil hole 131, the second oil hole 132, and the third oil hole 133 on the cylinder 10 are correspondingly connected to the hydraulic valve stand through oil delivery pipes.

In operation, please refer to fig. 2, the hydraulic valve station is used to feed oil into the second oil hole 132, return oil from the first oil hole 131, and close the third oil hole 133, and the locking member 30 is supported by the first piston assembly 21 to extend; when the third oil hole 133 is filled with oil, the second oil hole 132 is filled with oil, and the first oil hole 131 is closed, the locking rod 32 of the locking piece 30 is driven by the second piston assembly 22 to rotate by 90 degrees so as to form a locking preparation state for the upper roller system of the straightener; when the first oil hole 131 is filled with oil, the second oil hole 132 is filled with oil, and the third oil hole 133 is closed, the locking piece 30 is driven to contract through the first piston assembly 21, and an upper roller system of the straightening machine is locked; and finally, closing all the first oil hole 131, the second oil hole 132 and the third oil hole 133, wherein the hydraulic locking cylinder is in a locking working state for the upper roller system of the straightener.

When the upper roll system of the straightener needs to be loosened, please refer to fig. 3, the hydraulic valve station is used to feed oil into the second oil hole 132, return oil into the first oil hole 131, and close the third oil hole 133, and the locking member 30 is pushed and extended by the first piston assembly 21; then the oil is fed into the second oil hole 132, the oil is fed into the third oil hole 133, the first oil hole 131 is closed, and the locking rod 32 of the locking piece 30 is driven by the second piston assembly 22 to rotate for 90 degrees so as to loosen the upper roller system of the straightening machine; the first oil hole 131 is filled with oil, the second oil hole 132 is filled with oil, the third oil hole 133 is closed, and the locking piece 30 is driven to contract by the first piston assembly 21; and finally, closing all the first oil hole 131, the second oil hole 132 and the third oil hole 133, wherein the upper roller system of the straightening machine is in a loosening state by the hydraulic locking cylinder.

In conclusion, the hydraulic locking cylinder capable of automatically rotating and stretching is convenient for rapidly clamping and loosening the upper roll system of the straightening machine, the whole process does not need manual operation, and the hydraulic locking cylinder is simple, reliable and convenient and saves time for rapidly changing rolls.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. The utility model provides a but hydraulic pressure locking cylinder of autogiration flexible, includes cylinder body (10), places cylinder body (10) in and can be in the piston mechanism (20) of cylinder body (10) activity and connect in the lock of piston mechanism (20) outer end and hold (30), its characterized in that: the piston mechanism (20) comprises a first piston assembly (21) and a second piston assembly (22) matched with the first piston assembly (21), a hydraulic system used for driving the first piston assembly (21) and the second piston assembly (22) to be matched, stretched and rotated in the cylinder body (10) is arranged outside the cylinder body (10), and the locking piece (30) is driven to stretch and rotate automatically to clamp or loosen an upper roller system of the straightening machine.

2. The automatically rotatable and extendable hydraulic lock cylinder according to claim 1, wherein: one end of the first piston assembly (21) penetrates through a through hole (121) in the center of the cylinder cover (12) to be connected with the locking piece (30), the other end of the first piston assembly (21) forms a connecting end (2121) with a regular polygonal structure to be matched and connected with the second piston assembly (22), the second piston assembly (22) comprises a second piston (221) and a rotary piston (222) fixedly connected with the second piston (221), a connecting hole (2211) matched with the connecting end (2121) is formed in the center of one end face of the second piston (221), the connecting end (2121) of the piston rod (212) can stretch and retract in the connecting hole (2211), a section of guide track groove (2222) is formed in the side wall of the rotary piston (222), a fixed abutting piece (2223) is arranged in the guide track groove (2222) to rotate along the rotation track of the guide track groove (2222) along the abutting piece (2223) along the axis of the rotary piston (222) through the rotary piston (222), thereby driving the first piston assembly (21) to rotate.

3. The automatically rotatable and extendable hydraulic lock cylinder according to claim 2, wherein: the first piston assembly (21) comprises a first piston (211) and a piston rod (212) fixedly connected to the first piston (211), one end of the piston rod (212) is connected with the locking piece (30), and the other end of the piston rod (212) forms the connecting end (2121) of the regular polygon structure.

4. The automatically rotatable and extendable hydraulic lock cylinder according to claim 2, wherein: the propping piece (2223) comprises a steel ball (2224) which is arranged in the guide track groove (2222) and has a preset sliding clearance with the guide track groove (2222) and a propping rod (2225) which is connected to the steel ball (2224), and the end part of the propping rod (2225) is fixed on the cavity wall of the cylinder body (10).

5. The automatically rotatable and extendable hydraulic lock cylinder according to claim 2, wherein: the section of the connecting end (2121) at the end part of the piston rod (212) is square, and the connecting hole (2211) formed in the center of the second piston (221) is a square hole, so that the connecting end (2121) of the piston rod (212) is matched and connected with the connecting hole (2211) of the second piston (221).

6. The automatically rotatable and extendable hydraulic lock cylinder according to claim 3, wherein: a first oil hole (131), a second oil hole (132) and a third oil hole (133) are formed in the peripheral wall (13) of the cylinder body (10), each oil hole is correspondingly connected with a hydraulic system through an oil conveying pipe, a first oil chamber (2111) is formed between one side of the first piston (211) and the cavity of the cylinder body (10), the first oil chamber (2111) is communicated with the first oil hole (131), a second oil chamber (2112) is formed in the cavity between the first piston (211) and the second piston (221), the second oil chamber (2112) is communicated with the second oil hole (132), a third oil chamber (2113) is formed between the second piston (221) and the cavity of the cylinder body (10), and the third oil chamber (2113) is communicated with the third oil hole (133).

7. The automatically rotatable and extendable hydraulic lock cylinder according to claim 3, wherein: the locking piece (30) is in an -shaped structure, the locking piece (30) comprises a connecting rod (31) and a locking rod (32) formed on the connecting rod (31), and the connecting rod (31) is fixedly connected with the end part of the piston rod (212).

8. The automatically rotatable and extendable hydraulic lock cylinder according to claim 3, wherein: the peripheral wall of the first piston (211) abuts against the cavity wall of the cylinder body (10), the peripheral wall of the second piston (221) abuts against the cavity wall of the cylinder body (10), and sealing gaskets (213) are arranged on the peripheral walls of the two pistons.

9. The automatically rotatable and extendable hydraulic lock cylinder as set forth in claim 6, wherein: the cylinder body (10) comprises a bottom wall (11), a cylinder cover (12) and a peripheral wall (13), wherein the cylinder cover (12) is arranged opposite to the bottom wall (11), the peripheral wall (13) is formed between the bottom wall (11) and the cylinder cover (12), and the cavity is formed among the bottom wall (11), the cylinder cover (12) and the peripheral wall (13).

10. The automatically rotatable telescopic hydraulic lock cylinder as set forth in claim 9, wherein: a through hole (111) is formed in the center of the bottom wall (11) of the cylinder body (10), a sealing ring (112) is arranged at the through hole, a guide rod (2221) is arranged at the center of the bottom of the rotary piston (222), and the guide rod (2221) penetrates through the through hole (111) in the center of the bottom wall (11).