Swing oil cylinder
By integrating gearbox components and control valve groups to optimize the oil circuit, the problems of complex structure and insufficient speed regulation stability of existing swing cylinders are solved, realizing a swing cylinder design that is compact, precise in control, and efficient.
Patent Information
- Application Number
- CN202520617124.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-03
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-04-03
AI Technical Summary
The existing swing cylinder has a complex structure, the control valve group oil circuit is not optimized, the oil circuit integration is low, the speed regulation stability is insufficient, and the separation of the control valve group from the cylinder body leads to complex pipelines that are prone to leakage. The unreasonable design of the return oil channel affects the system efficiency.
A swing cylinder comprising a gearbox assembly, a cylinder block assembly, a swing cylinder control valve group, and a swing shaft was designed. It integrates the gearbox, cylinder barrel, piston rod, and control valve group. The oil circuit is optimized by speed control valve and throttle valve, achieving a compact structure and precise control. A sealed oil chamber and an integrated oil return channel are used to reduce leakage.
This invention achieves a compact, precise, and efficient swing cylinder, improving speed regulation stability and application flexibility, reducing leakage risks, and enhancing system efficiency.
Smart Images
Figure CN223881458U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of hydraulic transmission device, concretely relates to a swing cylinder. BACKGROUND
[0002] Swing cylinder has wide application in industrial automation, and the existing swing cylinder has complex structure, insufficient optimization of control valve group oil circuit, low oil circuit integration and insufficient speed regulation stability, which leads to low efficiency and complex maintenance. In the prior art, the control valve group is usually arranged separately from the cylinder body, which leads to complex pipeline and easy leakage. In addition, the unreasonable design of the oil return channel easily causes oil temperature rise, which affects system efficiency. The utility model aims at solving the above problems. SUMMARY
[0003] In order to solve the technical problems existing in the prior art and achieve the above purpose, the utility model provides a swing cylinder, which comprises a gear box assembly, a cylinder body assembly, a swing cylinder control valve group and a swing shaft, the gear box assembly comprises a gear box, a gear and a rack, the swing shaft is rotatably connected with the gear, both sides of the gear box are respectively sleeved with a cylinder barrel, the cylinder barrel and the gear box form a containing cavity, the gear is arranged in the gear box, the rack is engaged with the gear and contained in the containing cavity, the outer side of the cylinder barrel is respectively connected with a first cylinder body and a second cylinder body, a guide sleeve is fixedly arranged at the connection position of the cylinder barrel and each cylinder body, the outer side of each cylinder body is respectively provided with a cylinder bottom, a sealed oil cavity is formed between the cylinder bottom and the guide sleeve, one piston rod is respectively connected with the two sides of the rack, the piston rod slidably penetrates the guide sleeve, and the end of the piston rod is provided with a piston; the swing cylinder control valve group comprises an oil circuit block body arranged on the top of the gear box, a filter and a reversing valve, the filter is installed on the outer side surface of the oil circuit block body and communicates with the oil inlet pipeline through the built-in oil channel, the reversing valve is fixed on the outer side of the filter, the upper surface of the oil circuit block body is provided with a hole: P port and T port, the left connecting plate surface of the oil circuit block body is provided with a hole: B port and T2 port, and the right connecting plate surface of the oil circuit block body is provided with a hole: A port and T1 port; the P port communicates with the reversing valve through the oil channel, the KP port and the filter arranged in the oil circuit block body; the T port communicates with the main oil return channel of the T1 port and the T2 port, the main oil return channel communicates with the reversing valve through the oil channel, the KT1 port, the KT2 port and the filter arranged in the oil circuit block body; the A port communicates with the reversing valve through the oil channel, the KA port and the filter arranged in the oil circuit block body; the B port communicates with the reversing valve through the oil channel, the KB port and the filter arranged in the oil circuit block body; the A port communicates with the rodless cavity of the first cylinder body through the external connecting pipeline, the B port communicates with the rodless cavity of the second cylinder body through the external connecting pipeline, the T1 port communicates with the rod cavity of the first cylinder body through the external connecting pipeline, and the T2 port communicates with the rod cavity of the second cylinder body through the external connecting pipeline.
[0004] The swing cylinder control valve group further comprises a speed regulating valve arranged between the B port and the KB port, the oil path block body upper connecting plate face is provided with a first upper communication hole and a second upper communication hole, the oil path block body front connecting plate face is provided with a front process hole, the oil path block body left connecting plate face is provided with a left process hole, the B port is communicated with the speed regulating valve through the first upper communication hole, and then communicated with the KB port working oil channel through the second upper communication hole, the front process hole and the left process hole.
[0005] The oil path block body right connecting plate face is further provided with a right process hole and a throttle valve insertion hole, the oil path block body lower connecting plate face is further provided with a third lower process hole, the third lower process hole communicates the right process hole and the throttle valve insertion hole, the throttle valve insertion hole is communicated with the P port, the right process hole is communicated with the KP port working oil channel, the P port is communicated with the reversing valve through the throttle valve insertion hole, the third lower process hole, the right process hole, the KP port and the filter, and the throttle valve is inserted in the throttle valve insertion hole.
[0006] The oil path block body lower connecting plate face is provided with a first lower process hole and a second lower process hole, the oil path block body rear connecting plate face is provided with a rear process hole, the T port is communicated with the main oil return channel through the rear process hole, the main oil return channel is communicated with the KT1 port working oil channel through the first lower process hole and communicated with the KT2 port working oil channel through the second lower process hole, and then communicated with the reversing valve through the KT1 port, the KT2 port and the filter.
[0007] The oil path block body upper connecting plate face is further provided with a third upper communication hole, and the A port is communicated with the KA port working oil channel through the third upper communication hole.
[0008] The utility model has the following characteristics and beneficial effects: a swing oil cylinder and a control valve group with compact structure, accurate control and high efficiency are provided. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 It is a three-dimensional structure schematic view of the utility model;
[0010] Figure 2 It is a rear view of the utility model;
[0011] Figure 3 It is a front view of the utility model;
[0012] Figure 4 It is Figure 3 It is a section view at A-A;
[0013] Figure 5 It is Figure 4 It is a section view at B-B;
[0014] Figure 6For the utility model oil circuit block body stereo Figure 1 ;
[0015] Figure 7 For the utility model oil circuit block body stereo Figure 2 ;
[0016] Figure 8 For the utility model oil circuit block body stereo Figure 3 ;
[0017] Figure 9 For the utility model oil circuit front side structure schematic Figure 1 ;
[0018] Figure 10 For the utility model oil circuit right side structure schematic Figure 2 ;
[0019] Figure 11 For the utility model working principle diagram.
[0020] In the figure: 1-oil circuit block body;100-main oil return channel;101-first upper communication hole;102-second upper communication hole;103-third upper communication hole;104-left process hole;105-front process hole;106-right process hole;107-throttle valve insertion hole;108-first lower process hole;109-second lower process hole;110-third lower process hole;111-back process hole;21-gear box;22-gear;23-rack;24-cylinder;241-accommodation cavity;251-first cylinder;252-second cylinder;26-guide sleeve;27-cylinder bottom;28-piston rod;29-piston;3-filter;4-reversing valve;5-throttle valve;6-governor valve. Specific embodiments
[0021] In order to make the technical problem, technical scheme and beneficial effect that the utility model wants to solve more clearly, the utility model is further described in detail.Should understand, the specific embodiment described here is only used to explain the utility model, and is not used to limit the utility model.
[0022] For example Figures 1-8As shown, a swing cylinder includes a gear box assembly, a cylinder body assembly, a swing cylinder control valve group and a swing shaft, the gear box assembly includes a gear box 21, a gear 22 and a rack 23, the swing shaft is rotatably connected with the gear, both sides of the gear box are respectively sleeved with a cylinder barrel 24, the cylinder barrel 24 and the gear box form a containing cavity 241, the gear is arranged in the gear box, the rack 23 is engaged with the gear 22 and is contained in the containing cavity 241, the outer side of the cylinder barrel 24 is respectively connected with a first cylinder body 251 and a second cylinder body 252, the cylinder barrel 24 is fixedly provided with a guide sleeve 26 at the connection position with each cylinder body, the outer side of each cylinder body is respectively provided with a cylinder bottom 27, a sealed oil cavity is formed between the cylinder bottom 27 and the guide sleeve 26, both sides of the rack 23 are respectively connected with a piston rod 28, the piston rod 28 slidably penetrates the guide sleeve 26, and the end of the piston rod 28 is provided with a piston 29; the swing cylinder control valve group includes an oil way block body 1 arranged at the top of the gear box, a filter 3 and a reversing valve 4, the filter 3 is mounted on the outer side surface of the oil way block body 1 and is communicated with an oil inlet pipeline through an internal oil channel, the reversing valve 4 is fixed on the outer side of the filter 3, the upper connecting plate surface of the oil way block body 1 is provided with orifices P and T, the left connecting plate surface of the oil way block body 1 is provided with orifices B and T2, and the right connecting plate surface of the oil way block body 1 is provided with orifices A and T1.
[0023] As shown in Figure 6 , 8 , 9, 10, the right connecting plate surface of the oil way block body is further provided with a right process hole 106 and a throttle valve insertion hole 107, the lower connecting plate surface of the oil way block body is provided with a third lower process hole 110, the third lower process hole 110 communicates the right process hole 106 and the throttle valve insertion hole 107, the throttle valve insertion hole 107 is communicated with the P orifice, the right process hole 106 is communicated with a working oil channel at the KP orifice, the P orifice is communicated with the reversing valve 4 through the throttle valve insertion hole 107, the third lower process hole 110, the right process hole 106, the KP orifice, the filter 3 and the reversing valve 4, and a throttle valve 5 is inserted in the throttle valve insertion hole.
[0024] As shown in Figures 6-10 , the T orifice is communicated with a main oil return channel 100 communicated with the T1 orifice and the T2 orifice, the lower connecting plate surface of the oil way block body is provided with a first lower process hole 108 and a second lower process hole 109, the rear connecting plate surface of the oil way block body is provided with a rear process hole 111, the T orifice is communicated with the main oil return channel 100 through the rear process hole 111, the main oil return channel 100 is communicated with a working oil channel at the KT1 orifice through the first lower process hole 108 and is communicated with a working oil channel at the KT2 orifice through the second lower process hole 109, and then is communicated with the filter 3 and the reversing valve 4 through the KT1 orifice, the KT2 orifice, the filter 3 and the reversing valve 4 respectively.
[0025] As shown in Figures 6-10 , the upper connecting plate surface of the oil way block body is further provided with a third upper communication hole 103, the A orifice is communicated with a working oil channel at the KA orifice through the third upper communication hole 103, and then is communicated with the filter 3 and the reversing valve 4.
[0026] As Figures 5-10 shown, the swing cylinder control valve group also includes a speed regulating valve 6 arranged between the B port and the KB port, the first upper communication hole 101 and the second upper communication hole 102 are arranged on the connecting plate surface of the oil passage block body, the front process hole 105 is arranged on the front connecting plate surface of the oil passage block body, the left process hole 104 is arranged on the left connecting plate surface of the oil passage block body, the B port is communicated with the speed regulating valve 6 through the first upper communication hole 101, and then communicated with the KB port through the second upper communication hole 102, the front process hole 105, the left process hole 104, and the working oil passage, and then communicated with the reversing valve 4 through the filter 3.
[0027] As Figure 5 shown, the A port is communicated with the rodless cavity of the first cylinder body 251 through an external connecting pipeline, the B port is communicated with the rodless cavity of the second cylinder body 252 through an external connecting pipeline, the T1 port is communicated with the rod cavity of the first cylinder body 251 through an external connecting pipeline, and the T2 port is communicated with the rod cavity of the second cylinder body 252 through an external connecting pipeline.
[0028] As Figure 11 shown, the working principle is that the hydraulic oil enters the valve group through the P port, and the flow direction is controlled by the reversing valve:
[0029] When the reversing valve works at the left position: the pressure oil enters the second cylinder rodless cavity through the B port to drive the piston, the piston rod 28 drives the rack 23 to drive the gear to rotate, and at the same time, the oil in the first cylinder rod cavity returns to the oil tank through the T1 port, the main oil return channel, and the T port; when the reversing valve works at the right position: the pressure oil enters the first cylinder rodless cavity through the A port to drive the piston, the piston rod 28 drives the rack 23 to drive the gear in the opposite direction, and at the same time, the oil in the second cylinder rod cavity returns to the oil tank through the T2 port, the main oil return channel, and the T port; the oil amount of the B port is adjusted through the speed regulating valve 6 to realize accurate control of the swing speed. The main oil return channel 100 is integrated in the oil passage block main body 1, and the T1 port, the T2 port, and the oil are collected through the T port, reducing the external oil return pipeline. The double functions of the guide sleeve are to seal the cylinder oil cavity and form the sliding guide of the piston rod, and to isolate the containing cavity from the hydraulic oil passage to prevent contaminants from entering the gear meshing area.
Claims
1. A swing cylinder, comprising a gearbox assembly, a cylinder body assembly, a swing cylinder control valve group, and a swing shaft, wherein the gearbox assembly comprises a gearbox (21), a gear (22), and a rack (23), and the swing shaft is rotatably connected to the gear, characterized in that, Cylinder tubes (24) are respectively sleeved on both sides of the gearbox, and the cylinder tubes (24) and the gearbox form a receiving cavity (241). The gear is disposed in the gearbox, and the rack (23) meshes with the gear (22) and is disposed in the receiving cavity (241). A first cylinder body (251) and a second cylinder body (252) are respectively connected to the outside of the cylinder tubes (24). Guide sleeves (26) are fixedly provided at the connection between the cylinder tubes (24) and each cylinder body. A cylinder bottom (27) is respectively provided on the outside of each cylinder body. A tight seal is formed between the cylinder bottom (27) and the guide sleeve (26). The oil sealing chamber has a piston rod (28) connected to each side of the rack. The piston rod slidably passes through the guide sleeve (26), and a piston (29) is provided at the end of the piston rod (28). The swing cylinder control valve group includes an oil circuit block body (1), a filter (3), and a reversing valve (4) provided on the top of the gearbox. The filter (3) is installed on the outer side of the oil circuit block body (1) and is connected to the oil inlet pipe through the built-in oil passage. The reversing valve (4) is fixed to the outside of the filter (3). The connecting plate surface of the oil circuit block body (1) has holes. The oil circuit block body (1) has two ports: P port and T port. The left connecting plate has two ports: B port and T2 port. The right connecting plate has two ports: A port and T1 port. The P port is connected to the reversing valve (4) via the oil passage, KP port, and filter (3) inside the oil circuit block body (1). The T port is connected to the main return oil channel (100) which is connected to the T1 port and T2 port. The main return oil channel (100) is connected to the reversing valve (4) via the oil passage, KT1 port, KT2 port, and filter (3) inside the oil circuit block body (1). The A port is connected to the main return oil channel (100) which is connected to the main return oil channel (100) via the oil passage, KT1 port, KT2 port, and filter (3) inside the oil circuit block body (1). The oil passage, KA port, and filter (3) provided in the oil manifold body (1) are connected to the reversing valve (4); the B port is connected to the reversing valve (4) through the oil passage, KB port, and filter (3) provided in the oil manifold body (1); the A port is connected to the rodless chamber of the first cylinder (251) through an external pipe, the B port is connected to the rodless chamber of the second cylinder (252) through an external pipe, the T1 port is connected to the rod chamber of the first cylinder (251) through an external pipe, and the T2 port is connected to the rod chamber of the second cylinder (252) through an external pipe.
2. The swing cylinder according to claim 1, characterized in that, The swing cylinder control valve group also includes a speed regulating valve (6) disposed between port B and port KB. The connecting plate surface of the oil circuit block body is provided with a first upper connecting hole (101) and a second upper connecting hole (102). The front connecting plate surface of the oil circuit block body is provided with a front process hole (105). The left connecting plate surface of the oil circuit block body is provided with a left process hole (104). Port B is connected to the speed regulating valve (6) through the first upper connecting hole (101), and then connected to the working oil passage at port KB through the second upper connecting hole (102), the front process hole (105), and the left process hole (104).
3. A swing cylinder according to claim 2, characterized in that, The right connecting plate of the oil circuit block body is also provided with a right process hole (106) and a throttle valve insertion hole (107). The lower connecting plate of the oil circuit block body is also provided with a third lower process hole (110). The third lower process hole (110) connects the right process hole (106) and the throttle valve insertion hole (107). The throttle valve insertion hole (107) is connected to the P port. The right process hole (106) is connected to the working oil passage at the KP port. The P port is connected to the reversing valve (4) through the throttle valve insertion hole (107), the third lower process hole (110), the right process hole (106), the KP port, and the filter (3). A throttle valve (5) is inserted at the throttle valve insertion hole (107).
4. A swing cylinder according to claim 3, characterized in that, The lower connecting plate of the oil circuit block body is provided with a first lower process hole (108) and a second lower process hole (109). The rear connecting plate of the oil circuit block body is provided with a rear process hole (111). The T port is connected to the main return oil channel through the rear process hole (111). The main return oil channel (100) is connected to the working oil channel at the KT1 port through the first lower process hole (108), and to the working oil channel at the KT2 port through the second lower process hole (109). It is then connected to the reversing valve (4) through the KT1 port, the KT2 port, and the filter (3) respectively.
5. A swing cylinder according to claim 4, characterized in that, The connecting plate surface of the oil circuit block body is also provided with a third upper connecting hole (103), and the A port is connected to the working oil passage at the KA port through the third upper connecting hole (103).