Hydraulic oil cylinder with brake mechanism

Abstract

The utility model discloses a hydraulic oil cylinder with a brake mechanism, which comprises an oil cylinder shell, an end cover and a base are respectively arranged at two ends of the oil cylinder shell, a first oil inlet communicated with the oil cylinder shell is arranged on one side of the end cover, a second oil inlet communicated with the oil cylinder shell is arranged on one side of the base, and the first oil inlet and the second oil inlet are communicated with the oil cylinder shell. A piston rod slidably penetrates through the interior of the oil cylinder shell, and one end of the end cover is fixedly connected with a fixing ring. By means of the arrangement of the first connecting base and the second connecting base, the connecting angle of the device can be wider, the use range of the device is widened, when the piston rod extends to the longest distance, a round rod can enter a third clamping groove, then the piston rod can be braked, and the service life of the device is prolonged. The device does not need to be started continuously, the two first limiting blocks can get close to each other under the tension effect of the tension springs, and the first limiting blocks enter the grooves to brake the piston rods.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic oil cylinder with a braking mechanism. Background Art

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When it is used to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the motion is smooth, so it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application, and other devices are indispensable.

[0003] When the existing hydraulic cylinder is extended and retracted, there is no additional braking device, and thus continuous output of hydraulic oil is required. Therefore, it is very necessary to propose a hydraulic cylinder with a braking mechanism. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a hydraulic oil cylinder with a braking mechanism.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hydraulic oil cylinder with a braking mechanism comprises an oil cylinder housing, end covers and a base are respectively provided at two ends of the oil cylinder housing, a first oil inlet connected to the oil cylinder housing is provided on one side of the end cover, a second oil inlet connected to the oil cylinder housing is provided on one side of the base, a piston rod is slidably penetrated inside the oil cylinder housing, a fixing ring is fixedly connected to one end of the end cover, the piston rod extends from the inside of the fixing ring, a rotating cover is rotatably sleeved on one side of the end cover, circular grooves are provided on both sides of the fixing ring, and a first braking assembly for braking the piston rod is provided inside the circular groove;

[0007] Two symmetrically arranged sliding rods are slidably penetrated inside the rotating cover, and a second braking assembly for braking the piston rod is arranged at one end of the sliding rod;

[0008] The outer wall sliding sleeve of the rotating cover is provided with a sliding collar, and the bottom of the sliding collar is provided with a third braking component for braking the rotating cover.

[0009] As a further solution of the utility model, the first brake assembly includes a round rod sliding through the inside of the circular groove, one end of the round rod is fixedly connected to a second limit block, one side of the second limit block and an inner wall of one side of the circular groove are fixedly connected with a same spring, the spring is sleeved on the outer wall of the round rod, two symmetrically arranged third slots are opened on both sides of the piston rod, and the round rod is engaged with the third slots.

[0010] As a further solution of the utility model, the second brake assembly includes an abutment block fixedly connected to one end of the sliding rod, grooves are provided on both sides of the piston rod, the abutment block is engaged with the grooves, the other end of the sliding rod is fixedly connected to a first limit block, one side of the first limit block and one side of the rotating cover are fixedly connected with the same tension spring, and the tension spring is sleeved on the sliding rod.

[0011] As a further solution of the utility model, the third brake assembly includes two symmetrically arranged clamping rods fixedly connected to the bottom of the sliding ring, and the top of the end cover is provided with two symmetrically arranged first clamping grooves and two symmetrically arranged second clamping grooves, the two first clamping grooves and the two second clamping grooves are arranged in a ring shape on the outer wall of the rotating cover, and the second clamping groove and the first clamping groove are both engaged with the clamping rods.

[0012] As a further solution of the utility model, two symmetrically arranged inclined grooves are provided on the top of the sliding ring, and the inclined grooves are used in conjunction with the first limiting block.

[0013] As a further solution of the utility model, the inner wall of the rotating cover is provided with two symmetrically arranged arc grooves, and the arc grooves are used in conjunction with the second limiting block.

[0014] As a further solution of the utility model, the bottom of the base is fixedly connected to the second connecting seat, and one end of the piston rod is fixedly connected to the first connecting seat.

[0015] As a further solution of the utility model, a plurality of screw rods are arranged inside the end cover and the base, and nuts are threadedly sleeved on both ends of the screw rods.

[0016] The beneficial effects of the utility model are:

[0017] 1. The arrangement of the first connection seat and the second connection seat can make the connection angle of the device wider and improve the use range of the device.

[0018] 2. When the piston rod is extended to the longest distance, the round rod can enter the third slot, thereby braking the piston rod, and there is no need to continuously start the device.

[0019] 3. The two first limit blocks move closer to each other under the tension of the tension spring, and the first limit blocks enter the inside of the groove to brake the piston rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a hydraulic cylinder with a braking mechanism proposed by the utility model;

[0021] Figure 2 This is a partial structural schematic diagram of a hydraulic cylinder with a braking mechanism proposed by the utility model;

[0022] Figure 3 This is a three-dimensional structural schematic diagram of a rotating cover and a sliding collar in a hydraulic oil cylinder with a braking mechanism proposed by the utility model;

[0023] Figure 4 This is a three-dimensional structural schematic diagram of a middle end cover of a hydraulic oil cylinder with a braking mechanism proposed by the utility model;

[0024] Figure 5 This is a structural schematic diagram of a piston rod in a hydraulic cylinder with a braking mechanism proposed by the utility model;

[0025] Figure 6 The utility model is a three-dimensional structural schematic diagram of a rotating cover in a hydraulic cylinder with a braking mechanism.

[0026] In the figure: 1. cylinder housing; 2. end cover; 3. first oil inlet; 4. piston rod; 5. first connecting seat; 6. second oil inlet; 7. second connecting seat; 8. nut; 9. base; 10. screw; 11. rotating cover; 12. sliding collar; 13. first slot; 14. resistance block; 15. sliding rod; 16. clamping rod; 17. inclined slot; 18. first limit block; 19. tension spring; 20. fixing ring; 21. round rod; 22. spring; 23. arc groove; 24. second limit block; 25. round groove; 26. second slot; 27. groove; 28. third slot. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. It should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0028] Reference Figure 1-Figure 6A hydraulic cylinder with a braking mechanism comprises a cylinder housing 1, end covers 2 and a base 9 are respectively provided at both ends of the cylinder housing 1, a first oil inlet 3 communicating with the cylinder housing 1 is provided on one side of the end cover 2, a second oil inlet 6 communicating with the cylinder housing 1 is provided on one side of the base 9, a piston rod 4 is slidably penetrated inside the cylinder housing 1, a fixing ring 20 is fixedly connected to one end of the end cover 2, the piston rod 4 extends from the inside of the fixing ring 20, a rotating cover 11 is rotatably sleeved on one side of the end cover 2, circular grooves 25 are provided on both sides of the fixing ring 20, and a first braking assembly for braking the piston rod 4 is provided inside the circular groove 25;

[0029] Two symmetrically arranged sliding rods 15 are slidably penetrated inside the rotating cover 11, and a second brake assembly for braking the piston rod 4 is arranged at one end of the sliding rod 15;

[0030] The outer wall of the rotating cover 11 is slidably sleeved with a sliding collar 12 , and the bottom of the sliding collar 12 is provided with a third braking assembly for braking the rotating cover 11 .

[0031] In the utility model, the first brake assembly includes a round rod 21 that slides through the inside of the circular groove 25, one end of the round rod 21 is fixedly connected to a second limit block 24, one side of the second limit block 24 is fixedly connected to the inner wall of one side of the circular groove 25 with the same spring 22, the spring 22 is sleeved on the outer wall of the round rod 21, and two third clamping grooves 28 that are symmetrically arranged are opened on both sides of the piston rod 4, the round rod 21 is engaged with the third clamping groove 28, and at the same time, the inclined groove 17 pushes the two first limit blocks 18 away from each other. After rotating the rotating cover 11 by ninety degrees, the clamping rod 16 can be moved to the top of the second clamping groove 26, so that the two interference blocks 14 are aligned with the position of the groove 27, and at the same time, the rotating cover 11 drives the arc groove 23 to rotate, so that the second limit block 24 moves from the narrow side of the arc groove 23 to the wide side, and then the arc groove 23 pops out and no longer engages with the third clamping groove 28, thereby releasing the braking state of the piston rod 4.

[0032] In particular, the second brake assembly includes a resistance block 14 fixedly connected to one end of the sliding rod 15, grooves 27 are provided on both sides of the piston rod 4, the resistance block 14 is engaged with the grooves 27, the other end of the sliding rod 15 is fixedly connected to a first limit block 18, one side of the first limit block 18 and one side of the rotating cover 11 are fixedly connected with a tension spring 19, the tension spring 19 is sleeved on the sliding rod 15, at this time, the piston rod 4 can be normally retracted, after the piston rod 4 is retracted to the inside of the cylinder housing 1, The groove 27 is located on one side of the abutment block 14. At this time, the sliding collar 12 is loosened and falls under the action of gravity. The sliding collar 12 drives the clamping rod 16 to fall, and the clamping rod 16 enters the inside of the second clamping groove 26 to brake the rotating cover 11. At the same time, the sliding collar 12 no longer clamps the first limit block 18. The two first limit blocks 18 approach each other under the tension of the tension spring 19, and the first limit block 18 enters the inside of the groove 27 to brake the piston rod 4, which is easy to use.

[0033] In particular, the third brake assembly includes two symmetrically arranged clamping rods 16 fixedly connected to the bottom of the sliding ring 12, and the top of the end cover 2 is provided with two symmetrically arranged first clamping grooves 13 and two symmetrically arranged second clamping grooves 26. The two first clamping grooves 13 and the two second clamping grooves 26 are arranged in a ring shape on the outer wall of the rotating cover 11. The second clamping grooves 26 and the first clamping grooves 13 are both engaged with the clamping rods 16. The sliding ring 12 is first moved vertically upward, and the sliding ring 12 drives the clamping rods 16 to move vertically upward. At this time, the clamping rods 16 are moved out from the inside of the first clamping grooves 13, and the braking state of the rotating cover 11 is released.

[0034] In particular, two symmetrically arranged inclined grooves 17 are formed on the top of the sliding collar 12 , and the inclined grooves 17 cooperate with the first limiting block 18 for use.

[0035] In particular, the inner wall of the rotating cover 11 is provided with two symmetrically arranged arc grooves 23 , and the arc grooves 23 are used in conjunction with the second limiting blocks 24 .

[0036] In particular, the bottom of the base 9 is fixedly connected to the second connecting seat 7, and one end of the piston rod 4 is fixedly connected to the first connecting seat 5. At the same time, the arrangement of the first connecting seat 5 and the second connecting seat 7 can make the connection angle of the device wider and improve the use range of the device.

[0037] In particular, a plurality of screw rods 10 are disposed inside the end cover 2 and the base 9 , and nuts 8 are threadedly sleeved on both ends of the screw rods 10 .

[0038] Working principle: When the device needs to be started, hydraulic oil is respectively fed into the first oil inlet 3 and the second oil inlet 6, so that the piston rod 4 can be normally extended and retracted, thereby completing the normal telescopic operation. At the same time, the arrangement of the first connecting seat 5 and the second connecting seat 7 can make the connection angle of the device wider, thereby improving the use range of the device;

[0039] When the piston rod 4 is extended to the longest distance, the round rod 21 can enter the third clamping groove 28, and then the piston rod 4 can be braked, and the continuous starting device is no longer needed. When the piston rod 4 needs to be retracted into the cylinder housing 1, the sliding collar 12 is first moved vertically upward, and the sliding collar 12 drives the clamping rod 16 to move vertically upward. At this time, the clamping rod 16 is moved out of the first clamping groove 13, and the braking state of the rotating cover 11 is released;

[0040] At the same time, the inclined groove 17 pushes the two first limit blocks 18 away from each other. After rotating the rotating cover 11 by 90 degrees, the clamping rod 16 can be moved to the top of the second clamping groove 26, so that the two abutting blocks 14 are aligned with the position of the groove 27. At the same time, the rotating cover 11 drives the arc groove 23 to rotate, so that the second limit block 24 moves from the narrow side of the arc groove 23 to the wide side, and then the arc groove 23 pops out and no longer engages with the third clamping groove 28, thereby releasing the braking state of the piston rod 4;

[0041] At this time, the piston rod 4 can be retracted normally. After the piston rod 4 is retracted into the interior of the cylinder housing 1, the groove 27 is located on one side of the abutment block 14. At this time, the sliding collar 12 is loosened, and the sliding collar 12 falls under the action of gravity. The sliding collar 12 drives the clamping rod 16 to fall, and the clamping rod 16 enters the interior of the second clamping groove 26 to brake the rotating cover 11. At the same time, the sliding collar 12 no longer clamps the first limit block 18. The two first limit blocks 18 approach each other under the tension of the tension spring 19, and the first limit block 18 enters the interior of the groove 27 to brake the piston rod 4, which is easy to use.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic cylinder with a brake mechanism, comprising a cylinder housing (1), characterized in that: The two ends of the oil cylinder housing (1) are respectively provided with an end cover (2) and a base (9); a first oil inlet (3) connected to the oil cylinder housing (1) is provided on one side of the end cover (2); a second oil inlet (6) connected to the oil cylinder housing (1) is provided on one side of the base (9); a piston rod (4) is slidably penetrated inside the oil cylinder housing (1); a fixing ring (20) is fixedly connected to one end of the end cover (2); the piston rod (4) extends from the inside of the fixing ring (20); a rotating cover (11) is rotatably sleeved on one side of the end cover (2); circular grooves (25) are provided on both sides of the fixing ring (20); a first brake assembly for braking the piston rod (4) is provided inside the circular groove (25); Two symmetrically arranged sliding rods (15) are slidably penetrated inside the rotating cover (11), and a second braking assembly for braking the piston rod (4) is arranged at one end of the sliding rod (15); The outer wall of the rotating cover (11) is slidably sleeved with a sliding collar (12), and the bottom of the sliding collar (12) is provided with a third braking assembly for braking the rotating cover (11).

2. A hydraulic cylinder with a braking mechanism according to claim 1, characterized in that: The first brake assembly comprises a round rod (21) which slides through the inside of the circular groove (25); one end of the round rod (21) is fixedly connected to a second limit block (24); one side of the second limit block (24) is fixedly connected to an inner wall of one side of the circular groove (25); the spring (22) is sleeved on the outer wall of the round rod (21); two third slots (28) which are symmetrically arranged are provided on both sides of the piston rod (4); the round rod (21) is engaged with the third slots (28).

3. The hydraulic cylinder with a brake mechanism according to claim 1, characterized in that: The second brake assembly comprises a resistance block (14) fixedly connected to one end of the sliding rod (15); grooves (27) are provided on both sides of the piston rod (4); the resistance block (14) is engaged with the grooves (27); the other end of the sliding rod (15) is fixedly connected to a first limit block (18); a tension spring (19) is fixedly connected between one side of the first limit block (18) and one side of the rotating cover (11); and the tension spring (19) is sleeved on the sliding rod (15).

4. The hydraulic cylinder with a brake mechanism according to claim 1, characterized in that: The third brake assembly comprises two symmetrically arranged clamping rods (16) fixedly connected to the bottom of the sliding collar (12); the top of the end cover (2) is provided with two symmetrically arranged first clamping grooves (13) and two symmetrically arranged second clamping grooves (26); the two first clamping grooves (13) and the two second clamping grooves (26) are arranged in an annular shape on the outer wall of the rotating cover (11); the second clamping grooves (26) and the first clamping grooves (13) are both engaged with the clamping rods (16).

5. The hydraulic cylinder with a brake mechanism according to claim 1, characterized in that: The top of the sliding collar (12) is provided with two symmetrically arranged inclined grooves (17), and the inclined grooves (17) are used in conjunction with a first limiting block (18).

6. The hydraulic cylinder with a brake mechanism according to claim 1, characterized in that: The inner wall of the rotating cover (11) is provided with two symmetrically arranged arc-shaped grooves (23), and the arc-shaped grooves (23) are used in conjunction with the second limiting block (24).

7. The hydraulic cylinder with a brake mechanism according to claim 1, characterized in that: The bottom of the base (9) is fixedly connected to a second connection seat (7), and one end of the piston rod (4) is fixedly connected to a first connection seat (5).

8. The hydraulic cylinder with a brake mechanism according to claim 1, characterized in that: A plurality of screw rods (10) are arranged inside the end cover (2) and the base (9), and nuts (8) are threadedly sleeved on both ends of the screw rods (10).

Images