Swing hydraulic cylinder

Abstract

The present application provides a kind of swing hydraulic cylinder, including cylinder barrel, drive shaft is equipped in the cylinder barrel, drive shaft is equipped with vane between cylinder barrel, vane is connected with drive shaft, torque output block is equipped on the vane, torque output block is connected with drive shaft by passing through cylinder barrel and vane, fixed block is also equipped in the cylinder barrel, fixed block is connected with the inner wall of cylinder barrel, first oil cavity is equipped above the fixed block, second oil cavity is equipped below, first oil nozzle and second oil nozzle are equipped on the outside of cylinder barrel, first oil nozzle is communicated with first oil cavity, second oil nozzle is communicated with second oil cavity, front cover is equipped in one end of cylinder barrel, rear cover base is equipped in the other end; It can improve the output torque and mechanical efficiency of swing hydraulic cylinder greatly shortens the force arm of hydraulic cylinder output shaft, according to need, the number of vane can be selected, so that different swing angle and torque are obtained, the scope of application is wide, and it is suitable for popularization and use.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of hydraulic oil cylinder, in particular to a swing hydraulic cylinder. BACKGROUND

[0002] The conventional vane type and piston type swing hydraulic cylinder torque output part is the outer driving shaft end of the cylinder barrel, the output force arm is long and the driving shaft stress is concentrated on the connection part when driving the external rotation, the present application increases the torque output block protruding from the cylinder barrel to disperse the stress acting on the driving shaft from the outside and reduce the output force arm, thereby improving the output torque of the driving shaft and the mechanical efficiency to a certain extent.

[0003] The Chinese patent CN208918954U "a swing type hydraulic cylinder" adopts the conventional front end combined shaft output torque, the length of the combined shaft is the output force arm of the torque, which reduces the torque output and reduces the mechanical efficiency. SUMMARY

[0004] The main purpose of the present application is to provide a swing hydraulic cylinder, which solves the problems of reducing the output force arm, improving the output torque of the driving shaft and the mechanical efficiency.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is: a swing hydraulic cylinder, comprising a cylinder barrel, a driving shaft is arranged in the cylinder barrel, a vane is arranged between the driving shaft and the cylinder barrel, the vane is connected with the driving shaft, a torque output block is arranged on the vane, the torque output block is connected with the driving shaft through the cylinder barrel and the vane, a fixed block is further arranged in the cylinder barrel, the fixed block is connected with the inner wall of the cylinder barrel, a first oil cavity is arranged above the fixed block, and a second oil cavity is arranged below the fixed block, a first oil nozzle and a second oil nozzle are arranged on the outer side of the cylinder barrel, the first oil nozzle is in communication with the first oil cavity, and the second oil nozzle is in communication with the second oil cavity, a front cover is arranged at one end of the cylinder barrel, and a rear cover base is arranged at the other end of the cylinder barrel; by injecting hydraulic oil into the first oil cavity or the second oil cavity, the driving shaft, the vane and the torque output block are driven to rotate.

[0006] In the preferred scheme, the fixed block is connected with the cylinder barrel by bolts, one end of the fixed block abuts against the inner wall of the cylinder barrel, and the other end of the fixed block abuts against the driving shaft, and sealing rings are arranged at the connection positions of the fixed block with the cylinder barrel and the driving shaft.

[0007] In the preferred scheme, the torque output block passes through a first square groove on the cylinder barrel and a second square groove on the vane, the end of the torque output block abuts against a third square groove on the driving shaft, and the torque output block is connected with the driving shaft by bolts.

[0008] In the preferred scheme, the outer side of the vane abuts against the inner wall of the cylinder barrel, and the inner side of the vane abuts against the driving shaft, the vane is connected with the driving shaft by bolts, sealing rings are arranged between the vane and the cylinder barrel, and sealing rings are arranged between the vane and the driving shaft.

[0009] In the preferred embodiment, the driving shaft is coaxial with the cylinder barrel, one end of the driving shaft passes through the front cover, and the other end passes through the rear cover base, and a sealing ring is arranged between the driving shaft and the front cover and the rear cover base.

[0010] In the preferred embodiment, the front cover is connected to the end face of the cylinder barrel by bolts, a sealing ring is arranged between the front cover and the cylinder barrel, the front cover abuts against the vane, and a sealing ring is arranged between the front cover and the vane.

[0011] In the preferred embodiment, the rear cover base is connected to the end face of the cylinder barrel by bolts, a sealing ring is arranged between the rear cover base and the cylinder barrel, one end of the rear cover base abuts against the vane, a sealing ring is arranged between the rear cover base and the vane, and a dust cover is arranged at the end of the driving shaft, and the dust cover is connected to the rear cover base by bolts.

[0012] In the preferred embodiment, a connecting shaft sleeve is arranged outside the cylinder barrel, the cylinder barrel abuts against the torque output block through the clamping groove in the sleeve hole in the connecting shaft sleeve, first through holes are arranged on both sides of the clamping groove, and the connecting shaft sleeve is connected to the torque output block by first bolts passing through the first through holes and second through holes in the torque output block.

[0013] In the preferred embodiment, the second square groove and the third square groove are matched with the torque output block.

[0014] In the preferred embodiment, the torque output block rotates in the first square groove.

[0015] The present application provides a swing hydraulic cylinder, which directly extends a torque output block inside the hydraulic cylinder, greatly shortens the force arm of the output shaft of the hydraulic cylinder, and places the acting surface of the torque output block on the acting surface of the hydraulic oil in the hydraulic cylinder, so as to improve the output torque and mechanical efficiency of the swing hydraulic cylinder, has a compact structure, and is simple and convenient to install and disassemble in the bolt connection mode, and the sealing rings on the connecting surfaces ensure the sealing of the hydraulic oil and avoid oil leakage. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in combination with the drawings and embodiments:

[0017] Figure 1 is the overall device structure view of the present application;

[0018] Figure 2 is the overall device explosion view of the present application;

[0019] Figure 3 is the connecting shaft sleeve and hydraulic cylinder connection schematic view of the present application;

[0020] Figure 4 is the connecting shaft sleeve and hydraulic cylinder connection front sectional view of the present application;

[0021] Figure 5 is the connecting shaft sleeve and hydraulic cylinder connecting side view of the present application;

[0022] Figure 6 is the connecting shaft sleeve structure view of the present application;

[0023] Figure 7 is the cylinder structure view of the present application;

[0024] Figure 8 is the torque output block structure view of the present application;

[0025] Figure 9 is the blade structure view of the present application;

[0026] Figure 10 is the drive shaft structure view of the present application;

[0027] Figure 11 is the vertical installation application schematic diagram of the present application;

[0028] Figure 12 is the horizontal installation application schematic diagram of the present application;

[0029] In the figure: connecting shaft sleeve 1; clamping groove 101; first through hole 102; sleeve hole 103; notch 104; first bolt 2; cylinder 3; first square groove 301; rear cover base 4; torque output block 5; bolt hole 501; second through hole 502; blade 6; second square groove 601; front cover 7; dust cover 8; first oil nozzle 9; fixed block 10; drive shaft 11; third square groove 1101; second oil nozzle 12; first oil cavity 13; second oil cavity 14; sealing assembly 15; first rotating platform 16; dynamic hydraulic cylinder 17; second rotating platform 18. DETAILED DESCRIPTION

[0030] Example 1

[0031] As Figures 1-12As shown, a swing hydraulic cylinder comprises a cylinder barrel 3, a driving shaft 11 is arranged in the cylinder barrel 3, a vane 6 is arranged between the driving shaft 11 and the cylinder barrel 3, the vane 6 is connected with the driving shaft 11, a torque output block 5 is arranged on the vane 6, the torque output block 5 is connected with the driving shaft 11 through the cylinder barrel 3 and the vane 6, a fixed block 10 is further arranged in the cylinder barrel 3, the fixed block 10 is connected with the inner wall of the cylinder barrel 3, a first oil cavity 13 is arranged above the fixed block 10, and a second oil cavity 14 is arranged below the fixed block 10, a first oil nozzle 9 and a second oil nozzle 12 are arranged outside the cylinder barrel 3, the first oil nozzle 9 is communicated with the first oil cavity 13, the second oil nozzle 12 is communicated with the second oil cavity 14, a front cover 7 is arranged at one end of the cylinder barrel 3, and a rear cover base 4 is arranged at the other end of the cylinder barrel 3; by injecting hydraulic oil into the first oil cavity 13 or the second oil cavity 14, the driving shaft 11, the vane 6 and the torque output block 5 are driven to rotate, and due to the structure that the vane 6 and the torque output block 5 are fixed on the driving shaft 11, the pressure of the hydraulic oil directly acts on the end face of the vane 6, so that the vane 6 and the torque output block 5 on the driving shaft 11 rotate, that is, the swing of the torque output block 5 in the cylinder barrel 3 can be realized, and since the torque output block 5 is located on the pressure acting surface of the hydraulic oil, the torque of the torque output block 5 is greatly improved on the basis of shortening the output force arm, and the mechanical efficiency is also improved.

[0032] In the preferred scheme, the fixed block 10 is connected with the cylinder barrel 3 through bolts, one end of the fixed block 10 abuts against the inner wall of the cylinder barrel 3, and the other end of the fixed block 10 abuts against the driving shaft 11, and a sealing ring is arranged at the connection position of the fixed block 10 with the cylinder barrel 3 and the driving shaft 11, and due to the structure, by injecting hydraulic oil into the first oil cavity 13 and the second oil cavity 14, the pressure of the hydraulic oil acts on the fixed block 10 and the vane 6, and since the fixed block 10 is fixedly connected with the cylinder barrel 3, the pressure of the hydraulic oil can only act on the vane 6, so that the vane 6 rotates.

[0033] In the preferred scheme, the torque output block 5 passes through a first square groove 301 on the cylinder barrel 3 and a second square groove 601 on the vane 6, the end of the torque output block 5 abuts against a third square groove 1101 on the driving shaft 11, and the torque output block 5 is connected with the driving shaft 11 through bolts, and due to the structure, the torque output block 5 is spliced with the vane 6 and the driving shaft 11 through the second square groove 601 and the third square groove 1101, and then the torque output block 5, the vane 6 and the driving shaft 11 are connected and fixed with the driving shaft 11 through bolts, so that the torque output block 5, the vane 6 and the driving shaft 11 rotate together under the action of the hydraulic oil.

[0034] In the preferred embodiment, the vane 6 is abutted on the inner wall of the cylinder 3 on the outside and on the driving shaft 11 on the inside, the vane 6 is connected with the driving shaft 11 by bolts, and sealing rings are arranged between the vane 6 and the cylinder 3 and between the vane 6 and the driving shaft 11. With this structure, the rectangular sealing rings at both ends of the vane 6 can seal the connecting part of the cylinder 3, the driving shaft 11, the rear cover base 4 and the front cover 7, the structure is compact, and the installation and dismounting are simple and convenient.

[0035] In the preferred embodiment, the driving shaft 11 is coaxial with the cylinder 3, one end of the driving shaft 11 penetrates through the front cover 7, and the other end penetrates through the rear cover base 4, and sealing rings are arranged between the driving shaft 11 and the front cover 7 and the rear cover base 4. With this structure, the front cover 7 and the rear cover base 4 support and position the two ends of the driving shaft 11, and the sealing rings ensure that the hydraulic oil in the swing hydraulic cylinder will not leak out.

[0036] In the preferred embodiment, the front cover 7 is connected with the end face of the cylinder 3 by bolts, sealing rings are arranged between the front cover 7 and the cylinder 3, the front cover 7 is abutted on the vane 6, and sealing rings are arranged between the front cover 7 and the vane 6. With this structure, the bolt connection is simple and convenient for installation and dismounting, and has good sealing performance, which ensures that the hydraulic oil in the swing hydraulic cylinder will not leak out.

[0037] In the preferred embodiment, the rear cover base 4 is connected with the end face of the cylinder 3 by bolts, sealing rings are arranged between the rear cover base 4 and the cylinder 3, one end of the rear cover base 4 is abutted on the vane 6, sealing rings are arranged between the rear cover base 4 and the vane 6, and a dust cover 8 is arranged at the end of the driving shaft 11, and the dust cover 8 is connected with the rear cover base 4 by bolts. With this structure, the bolt connection is simple and convenient for installation and dismounting, and has good sealing performance, which ensures that the hydraulic oil in the swing hydraulic cylinder will not leak out.

[0038] In the preferred embodiment, a connecting shaft sleeve 1 is arranged on the outside of the cylinder 3, the cylinder 3 penetrates into the sleeve hole 103 on the connecting shaft sleeve 1, the clamping groove 101 on the connecting shaft sleeve 1 is abutted on the torque output block 5, first through holes 102 are arranged on both sides of the clamping groove 101, and the connecting shaft sleeve 1 is connected with the torque output block 5 by penetrating through the first through holes 102 and the second through holes 502 on the torque output block 5 by the first bolts 2. With this structure, the connecting shaft sleeve 1 is connected with the torque output block 5 by the clamping groove 101 on the connecting shaft sleeve 1, and is reinforced by bolts, so that the connecting shaft sleeve 1 transmits torque to the equipment, the torque arm is small, and the torque is large.

[0039] In the preferred embodiment, the second square groove 601 and the third square groove 1101 are matched with the torque output block 5.

[0040] In the preferred embodiment, the torque output block 5 rotates in the first square groove 301.

[0041] Embodiment 2

[0042] Further illustrated in combination with Embodiment 1, as shown in Figures 1-12 The mounting mode of the swing hydraulic cylinder 17 has multiple modes. The swing hydraulic cylinder 17 can be horizontally supported and fixed on one side, and connected with the equipment through the connecting shaft sleeve 1 on the other side to provide torque. The swing hydraulic cylinder 17 can also be vertically mounted and supported on the base to be fixed, and a first rotating platform 16 is sleeved in the axial direction. The swing hydraulic cylinder 17 can drive the first rotating platform 16 to rotate back and forth in the circumferential direction. The swing hydraulic cylinder 17 horizontally placed can also drive a second rotating platform 18 to rotate back and forth along the axis of the swing hydraulic cylinder 17. Different mounting modes can be selected according to different needs, which is more flexible. Meanwhile, the number of the blades 6 and the torque output blocks 5 in the rotating swing hydraulic cylinder 17 can be adjusted according to the requirements of the load, the output torque and the rotating angle. The more the number of the blades 6 and the torque output blocks 5, the greater the output torque and the smaller the rotating angle. Conversely, the less the number of the blades 6 and the torque output blocks 5, the smaller the output torque and the greater the rotating angle.

[0043] The above embodiments are only preferred technical solutions of the present application, and should not be regarded as limitation of the present application. The protection scope of the present application should be the technical solutions recited in the claims, including equivalent replacement solutions of the technical features recited in the claims. That is, equivalent replacement improvements within this range are also within the protection scope of the present application.

Claims

1. A swing hydraulic cylinder characterized by: The application relates to a torque output device, which comprises a cylinder (3), a driving shaft (11) arranged in the cylinder (3), a vane (6) arranged between the driving shaft (11) and the cylinder (3), the vane (6) being connected with the driving shaft (11), a torque output block (5) arranged on the vane (6), the torque output block (5) penetrating the cylinder (3) and the vane (6) and being connected with the driving shaft (11), a fixed block (10) arranged in the cylinder (3), the fixed block (10) being connected with the inner wall of the cylinder (3), a first oil cavity (13) arranged above the fixed block (10), a second oil cavity (14) arranged below the fixed block (10), a first oil nozzle (9) and a second oil nozzle (12) arranged on the outer side of the cylinder (3), the first oil nozzle (9) being communicated with the first oil cavity (13), the second oil nozzle (12) being communicated with the second oil cavity (14), a front cover (7) arranged at one end of the cylinder (3), and a rear cover base (4) arranged at the other end of the cylinder (3). The driving shaft (11), the vane (6) and the torque output block (5) are driven to rotate by injecting hydraulic oil into the first oil cavity (13) or the second oil cavity (14). The fixed block (10) is connected with the cylinder (3) through bolts, one end of the fixed block (10) is abutted against the inner wall of the cylinder (3), and the other end of the fixed block (10) is abutted against the driving shaft (11), and sealing rings are arranged at the connecting positions of the fixed block (10) with the cylinder (3) and the driving shaft (11). The torque output block (5) penetrates a first square groove (301) on the cylinder (3) and a second square groove (601) on the vane (6), the end of the torque output block (5) is abutted against a third square groove (1101) on the driving shaft (11), and the torque output block (5) is connected with the driving shaft (11) through bolts.

2. The oscillating hydraulic cylinder of claim 1, wherein: The outer side of the vane (6) is abutted against the inner wall of the cylinder (3), and the inner side of the vane (6) is abutted against the driving shaft (11), the vane (6) is connected with the driving shaft (11) through bolts, sealing rings are arranged between the vane (6) and the cylinder (3), and sealing rings are arranged between the vane (6) and the driving shaft (11).

3. The oscillating hydraulic cylinder of claim 1 wherein: The driving shaft (11) is coaxial with the cylinder (3), one end of the driving shaft (11) penetrates the front cover (7), and the other end of the driving shaft (11) penetrates the rear cover base (4), and sealing rings are arranged between the driving shaft (11) and the front cover (7) and the rear cover base (4).

4. The oscillating hydraulic cylinder of claim 1 wherein: The front cover (7) is connected with the end face of the cylinder (3) through bolts, sealing rings are arranged between the front cover (7) and the cylinder (3), the front cover (7) is abutted against the vane (6), and sealing rings are arranged between the front cover (7) and the vane (6).

5. The oscillating hydraulic cylinder of claim 1 wherein: The rear cover base (4) is connected with the end face of the cylinder (3) through bolts, sealing rings are arranged between the rear cover base (4) and the cylinder (3), one end of the rear cover base (4) is abutted against the vane (6), sealing rings are arranged between the rear cover base (4) and the vane (6), and a dust cover (8) is arranged at the end of the driving shaft (11), and the dust cover (8) is connected with the rear cover base (4) through bolts.

6. The oscillating hydraulic cylinder of claim 1 wherein: The connecting shaft sleeve (1) is arranged outside the cylinder (3), the cylinder (3) penetrates into the sleeve hole (103) on the connecting shaft sleeve (1), the clamping groove (101) on the connecting shaft sleeve (1) abuts against the torque output block (5), the first through hole (102) is arranged on the two sides of the clamping groove (101), and the connecting shaft sleeve (1) is connected with the torque output block (5) by penetrating through the first through hole (102) and the second through hole (502) on the torque output block (5) through the first bolt (2).

7. The oscillating hydraulic cylinder of claim 1 wherein: The second side groove (601) and the third side groove (1101) are matched with the torque output block (5).

8. The oscillating hydraulic cylinder of claim 1 wherein: The torque output block (5) rotates in the first side groove (301).

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