A new type of rotary anti-sway valve

Abstract

The present invention discloses a novel anti-sway valve for rotary rotation, including a rotary motor, a sealing mechanism, a sealing cover, a mounting hole, an oil inlet, a protective mechanism, a lubricating mechanism, a connecting rod, a slide plate, an oil passage, a sponge pad, a fixing seat, a compression spring and an anti-sway mechanism. The beneficial effects of the present invention are as follows: when installing, the four mounting holes of the rotary motor are aligned with the studs of the excavator body, and when the four studs on the excavator collide with the mounting holes, the slide plate inside the mounting holes collide, further realizing that the connecting rod drives the slide plate to move in the direction of the compression spring, further realizing that the slide plate squeezes the sponge pad, then the lubricating oil on the surface of the sponge pad moves toward the inside of the oil passage, and when the slide plate is separated from one end of the oil passage, the lubricating oil is squeezed between the mounting hole and the stud, realizing lubrication of the stud, avoiding rusting of the stud when water enters the excavator, affecting disassembly, and resetting the compression spring during disassembly to realize that the connecting rod resets the slide plate, facilitating disassembly of the studs on the excavator, and facilitating maintenance.

Description

Technical Field

[0001] The invention relates to a control valve, in particular to a novel rotary anti-sway valve, belonging to the technical field of control valves. Background Art

[0002] At present, during the braking process of the hydraulic swing motor on the excavator, the pressure shock and pressure fluctuation caused by inertia will cause the hydraulic motor to instantly alternate forward and reverse movements. This instantaneous forward and reverse alternating rotation will cause fluctuations in the hydraulic system. Therefore, installing a new swing anti-sway valve on the excavator can slow down the fluctuations in the hydraulic system caused by the reverse alternating rotation. (The working principle of the new swing anti-sway valve can be referred to patent number: 201520065958.9, patent name: threaded plug-in anti-sway valve).

[0003] However, currently during installation, the control valve body is directly fixed to the studs of the excavator body. Due to the uncertain working environment of the excavator, the bolts fixing the control valve rust after coming into contact with water, making it difficult to remove the control valve during maintenance. Since there is a small gap between the bottom of the new rotary anti-sway valve and the studs of the excavator body, it is difficult to demold the lubricant and difficult to disassemble. Summary of the invention

[0004] The purpose of the present invention is to provide a new type of rotary anti-sway valve in order to solve the above problems. The valve is flexible to operate, easy to inject lubricating oil, and convenient for disassembly and assembly of the control valve body.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: a new type of rotary anti-sway valve, including a rotary motor and an oil inlet opened on the side of the rotary motor, protective mechanisms are symmetrically installed at both ends of the rotary motor, the protective mechanisms are connected to the oil inlet, and anti-sway mechanisms for reducing swing are installed inside the two protective mechanisms. The top and bottom of the rotary motor are relatively provided with sealing mechanisms for installing the overall structure on the excavator body, and the sealing mechanism includes a sealing cover and a mounting hole. Two mounting holes are opened at the top and bottom of the rotary motor, and four The mounting hole is buckled with the sealing cover, and a lubrication mechanism is installed inside the sealing mechanism, and the lubrication mechanism includes a connecting rod, a slide plate, an oil channel, a sponge pad, a fixing seat and a compression spring. The four mounting holes are slidably connected with the slide plates, one end of the four slide plates is welded with the connecting rod, one end of the connecting rod is slidably connected to the inner wall of the rotary motor, one end of the connecting rod facing away from the slide plate is fixedly connected to the compression spring, the fixing seat is welded to the surface of the connecting rod, the sponge pad is bonded to the side wall of the fixing seat, and the other end of the oil channel is located at the top of the slide plate.

[0006] Preferably, in order to prevent the oil passage from being clogged by debris and affecting assembly and disassembly, the lubrication mechanism further includes a filter, and the filter is installed at the end of the oil passage located at the top of the slide.

[0007] Preferably, in order to squeeze the piston so that the sponge pad lubricating oil inside the sponge pad can be squeezed into the oil channel, the inner wall of the rotary motor is provided with an inverted "U" shaped oil channel, and one end of the oil channel is located at the top of the sponge pad.

[0008] Preferably, in order to achieve the installation of the valve body, the protection mechanism includes a fixing port, a valve body, a screw plug and a nut. The two side walls of the rotary motor are provided with the fixing ports at diagonal angles. The two fixing ports are connected to the oil inlet, and the two fixing ports are threadedly connected to the valve body. The nuts are welded to the ends of the two valve bodies facing away from the rotary motor, and the opposite ends of the two nuts are threadedly connected to the screw plugs.

[0009] Preferably, in order to facilitate the installation of the screw plug, the opposite ends of the two valve bodies are in an "eight" shape, and the nuts at the ends of the valve bodies are in an "eight" shape.

[0010] Preferably, in order to prevent the hydraulic system from swinging, the anti-sway mechanism includes a steel ball, a first spring, a valve core, a second spring, an adjusting gasket, a plunger and a piston, the first spring is fixedly connected to the inside of the opposite ends of the two valve bodies, the two first springs are fixedly connected to the valve core of the side wall opening, one end of the two first springs is fixedly connected to the valve core inside the valve body, the valve core and the valve body are slidably connected, the steel balls are provided at the opposite ends of the two valve cores, the pistons opposite to the valve cores are slidably connected to the inside of the two valve bodies, the opposite ends of the two pistons are fixedly connected to the plungers, the second springs are fixedly connected to the inside of the two valve bodies, one end of the two second springs is fixedly connected to the pistons, and the adjusting gaskets are fixedly connected to the surfaces of the two pistons.

[0011] Preferably, in order to increase the sealing between the screw plug and the valve body, the anti-sway mechanism further includes a sealing ring, and the surfaces of the two screw plugs are sleeved with the sealing ring.

[0012] Preferably, in order to increase the sealing performance between the piston and the valve body, the anti-sway mechanism further includes a sealing gasket, and the sealing gasket having an annular structure is bonded to the surfaces of the two pistons.

[0013] Preferably, in order to enable the sponge pad to absorb lubricating oil, the thickness of the sponge pad is smaller than the distance between the slide plate and the fixing seat, and the fixing seat is in a disc-shaped structure.

[0014] Preferably, in order to achieve sealing of the oil channel by the slide plate, the maximum diameter of the slide plate is equal to the maximum inner diameter of the mounting hole, and the thickness of the slide plate is greater than the diameter of the oil channel.

[0015] The beneficial effects of the present invention are as follows: during installation, the four mounting holes of the rotary motor are aligned with the studs of the excavator body, and when the four studs on the excavator collide with the mounting holes, the slide plate inside the mounting holes collide, further realizing that the connecting rod drives the slide plate to move in the direction of the compression spring, and further realizing that the slide plate squeezes the sponge pad, then the lubricating oil on the surface of the sponge pad moves toward the inside of the oil channel, and when the slide plate is separated from one end of the oil channel, the lubricating oil is squeezed between the mounting hole and the stud, thereby realizing lubrication of the stud, avoiding rusting of the stud when water enters the excavator and affecting disassembly, and resetting the compression spring during disassembly to realize that the connecting rod resets the slide plate, and the sponge pad opens, which facilitates disassembly of the studs on the excavator and facilitates maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 for Figure 1 The overall structure is shown in a rear view;

[0018] Figure 3 for Figure 1 The schematic diagram of the connection structure of the rotary motor, the sealing mechanism and the lubrication mechanism shown;

[0019] Figure 4 for Figure 1 The schematic diagram of the connection structure of the swing motor, oil inlet, anti-sway mechanism and screw plug shown;

[0020] Figure 5 for Figure 4 An enlarged schematic diagram of part A is shown;

[0021] Figure 6 for Figure 1 Schematic diagram of the connection structure of the rotary motor and the anti-sway mechanism shown.

[0022] In the figure: 1, rotary motor, 2, sealing mechanism, 21, sealing cover, 22, mounting hole, 3, oil inlet, 4, protection mechanism, 41, fixing port, 42, valve body, 43, screw plug, 44, nut, 5, lubrication mechanism, 51, connecting rod, 52, slide plate, 53, filter screen, 54, oil channel, 55, sponge pad, 56, fixing seat, 57, compression spring, 6, anti-sway mechanism, 61, steel ball, 62, first spring, 63, valve core, 64, second spring, 65, adjusting gasket, 66, plunger, 67, sealing ring, 68, piston, 69, sealing pad. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-5 As shown, a new type of swing anti-sway valve comprises a swing motor 1 and an oil inlet 3 opened on the side of the swing motor 1, protection mechanisms 4 are symmetrically installed at both ends of the swing motor 1, the protection mechanisms 4 are connected to the oil inlet 3, and anti-sway mechanisms 6 for reducing swing are installed inside the two protection mechanisms 4. The top and bottom of the swing motor 1 are relatively provided with sealing mechanisms 2 for installing the overall structure on the excavator body, and the sealing mechanism 2 includes a sealing cover 21 and a mounting hole 22. Two mounting holes 22 are opened on the top and bottom of the swing motor 1, and the four mounting holes 22 are buckled with the sealing cover 21. The sealing mechanism A lubrication mechanism 5 is installed inside the structure 2, and the lubrication mechanism 5 includes a connecting rod 51, a slide plate 52, an oil channel 54, a sponge pad 55, a fixing seat 56 and a compression spring 57. The four mounting holes 22 are slidably connected with the slide plates 52, one end of the four slide plates 52 is welded with the connecting rod 51, one end of the connecting rod 51 is slidably connected to the inner wall of the rotary motor 1, and the end of the connecting rod 51 away from the slide plate 52 is fixedly connected to the compression spring 57, the fixing seat 56 is welded to the surface of the connecting rod 51, the side wall of the fixing seat 56 is bonded with the sponge pad 55, and the other end of the oil channel 54 is located at the top of the slide plate 52.

[0025] As a technical optimization solution of the present invention, the lubrication mechanism 5 further includes a filter 53 , and the filter 53 is installed at the end of the oil channel 54 located at the top of the slide plate 52 .

[0026] As a technical optimization solution of the present invention, the inner wall of the rotary motor 1 is provided with the oil passage 54 in an inverted “U” shape, and one end of the oil passage 54 is located on the top of the sponge pad 55 .

[0027] As a technical optimization scheme of the present invention, the protection mechanism 4 includes a fixed port 41, a valve body 42, a plug screw 43 and a nut 44. The two side walls of the rotary motor 1 are provided with the fixed ports 41 at diagonal angles. The two fixed ports 41 are connected to the oil inlet 3. The two fixed ports 41 are both threadedly connected to the valve body 42. The nut 44 is welded to one end of the two valve bodies 42 away from the rotary motor 1, and the opposite ends of the two nuts 44 are threadedly connected to the plug screw 43.

[0028] As a technical optimization solution of the present invention, the opposite ends of the two valve bodies 42 are in an "eight" shape, and the nut 44 at the end of the valve body 42 is in an "eight" shape.

[0029] As a technical optimization scheme of the present invention, the anti-sway mechanism 6 includes a steel ball 61, a first spring 62, a valve core 63, a second spring 64, an adjusting gasket 65, a plunger 66 and a piston 68. The first spring 62 is fixedly connected to the interior of the opposite ends of the two valve bodies 42, the two first springs 62 are fixedly connected to the valve core 63 of the side wall opening, one end of the two first springs 62 is fixedly connected to the valve core 63 inside the valve body 42, the valve core 63 is slidably connected to the valve body 42, the steel ball 61 is provided at the opposite ends of the two valve cores 63, the piston 68 opposite to the valve core 63 is slidably connected to the interior of the two valve bodies 42, the plunger 66 is fixedly connected to the opposite ends of the two pistons 68, the second spring 64 is fixedly connected to the interior of the two valve bodies 42, one end of the two second springs 64 is fixedly connected to the piston 68, and the adjusting gasket 65 is fixedly connected to the surface of the two pistons 68.

[0030] As a technical optimization solution of the present invention, the anti-sway mechanism 6 further includes a sealing ring 67 , and the surfaces of the two screw plugs 43 are sleeved with the sealing ring 67 .

[0031] As a technical optimization solution of the present invention, the anti-sway mechanism further includes a sealing gasket 69 , and the surfaces of the two pistons 68 are bonded with the sealing gasket 69 in an annular structure.

[0032] As a technical optimization solution of the present invention, the thickness of the sponge pad 55 is smaller than the distance between the slide plate 52 and the fixing seat 56, and the fixing seat 56 is a disc-shaped structure.

[0033] As a technical optimization solution of the present invention, the maximum diameter of the slide plate 52 is equal to the maximum inner diameter of the mounting hole 22 , and the thickness of the slide plate 52 is greater than the diameter of the oil passage 54 .

[0034] When the present invention is in use, first, the sealing cover 21 is opened before installation, lubricating oil is injected into the interior of the sponge pad 55, and the sealing cover 12 is closed. During installation, the four mounting holes 22 of the slewing motor 1 are aligned with the studs of the excavator body. When the four studs on the excavator collide with the mounting holes 22, the slide plate 52 inside the mounting holes 22 is collided, and the connecting rod 51 further drives the slide plate 52 to move in the direction of the compression spring 57, and the slide plate 52 further squeezes the sponge pad 55. Then, the lubricating oil on the surface of the sponge pad 55 moves toward the interior of the oil passage 54. When the slide plate 52 is separated from one end of the oil passage 54, the lubricating oil is squeezed between the mounting hole 22 and the stud, so that the stud is lubricated, and the stud is prevented from rusting when water enters the excavator, which affects the disassembly. During disassembly, the compression spring 57 is reset, and the connecting rod 54 resets the slide plate 52. The cotton pad 55 is opened to facilitate the removal of the studs on the excavator and facilitate maintenance; then, after the installation of the swing motor 1 is completed, the two valve bodies 42 are threadedly connected to the side wall of the swing motor 1, and the installation of the anti-sway mechanism 6 is realized at the same time. After the installation of the valve body 42 is completed, the oil pipe of the hydraulic system of the excavator is connected to the oil inlet 3 to realize the installation of the overall structure. There are two valve bodies 42 on the swing motor 1 that are symmetrical on the left and right. During the starting process of the swing motor 1, the system pressure is gradually increased to the set value, or when the swing stops, the upper part continues to rotate under the action of inertia. At this time, the swing motor 1 becomes a "pump". Since the main oil circuit of the swing motor 1 is cut off, at this time, the "pump" outlet generates a huge pressure, and the anti-sway mechanism 6 inside the valve body 42 can gradually reduce this pressure to zero, eliminating the left and right swing of the swing motor 1 during overrun and parking.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A novel rotary anti-sway valve, comprising a rotary motor (1) and an oil inlet (3) provided on the side of the rotary motor (1), characterized in that: Protection mechanisms (4) are symmetrically installed at both ends of the swing motor (1), the protection mechanisms (4) are connected to the oil inlet (3), and anti-sway mechanisms (6) for reducing swing are installed inside the two protection mechanisms (4). The top and bottom of the swing motor (1) are relatively provided with sealing mechanisms (2) for mounting the overall structure on the excavator body. The sealing mechanism (2) includes a sealing cover (21) and a mounting hole (22). The top and bottom of the swing motor (1) are each provided with two mounting holes (22), and the four mounting holes (22) are buckled with the sealing cover (21). The sealing A lubrication mechanism (5) is installed inside the mechanism (2), and the lubrication mechanism (5) includes a connecting rod (51), a slide plate (52), an oil passage (54), a sponge pad (55), a fixing seat (56) and a compression spring (57). The slide plates (52) are slidably connected inside the four mounting holes (22), one end of the four slide plates (52) is welded with the connecting rod (51), one end of the connecting rod (51) is slidably connected to the inner wall of the rotary motor (1), one end of the connecting rod (51) away from the slide plate (52) is fixedly connected to the compression spring (57), and the surface of the connecting rod (51) is welded with The fixing seat (56) is provided with the sponge pad (55) bonded to the side wall of the fixing seat (56), and the other end of the oil passage (54) is located at the top of the slide plate (52); the lubricating mechanism (5) also includes a filter screen (53), and the filter screen (53) is installed at the end of the oil passage (54) located at the top of the slide plate (52); the inner wall of the rotary motor (1) is provided with the oil passage (54) in an inverted "U"-shaped structure, and one end of the oil passage (54) is located at the top of the sponge pad (55); the protection mechanism (4) includes a fixing port (41), a valve body (42), a screw plug (43) and a screw The two side walls of the rotary motor (1) are provided with the fixing ports (41) at diagonally opposite angles, the two fixing ports (41) are in communication with the oil inlet (3), the two fixing ports (41) are both threadedly connected to the valve body (42), the two ends of the valve bodies (42) facing away from the rotary motor (1) are welded with the nut (44), and the opposite ends of the two nuts (44) are threadedly connected to the screw plug (43); the opposite ends of the two valve bodies (42) are in an "eight"-shaped structure, and the nuts (44) at the ends of the valve bodies (42) are in an "eight"-shaped structure;The anti-sway mechanism (6) comprises a steel ball (61), a first spring (62), a valve core (63), a second spring (64), an adjusting gasket (65), a plunger (66) and a piston (68); the first spring (62) is fixedly connected to the interior of the two opposite ends of the valve bodies (42); the two first springs (62) are fixedly connected to the valve core (63) of the side wall opening; one end of the two first springs (62) is fixedly connected to the valve core (63) inside the valve body (42); the valve core (63) is fixedly connected to the valve body (42); 2), the steel balls (61) are provided at opposite ends of the two valve cores (63), the pistons (68) opposite to the valve cores (63) are slidably connected inside the two valve bodies (42), the plungers (66) are fixedly connected to the opposite ends of the two pistons (68), the second springs (64) are fixedly connected inside the two valve bodies (42), one end of the two second springs (64) is fixedly connected to the pistons (68), and the surfaces of the two pistons (68) are fixedly connected to the adjusting gaskets (65). ; 2. A new type of rotary anti-sway valve according to claim 1, characterized in that: The anti-sway mechanism (6) further comprises a sealing ring (67), and the surfaces of the two screw plugs (43) are sleeved with the sealing ring (67).

3. A new type of rotary anti-sway valve according to claim 1, characterized in that: The anti-sway mechanism also includes a sealing gasket (69), and the sealing gasket (69) in an annular structure is bonded to the surfaces of the two pistons (68).

4. A new type of rotary anti-sway valve according to claim 1, characterized in that: The thickness of the sponge pad (55) is smaller than the distance between the slide plate (52) and the fixing seat (56), and the fixing seat (56) is in a disc-shaped structure.

5. The novel rotary anti-sway valve according to claim 1 is characterized in that: The maximum diameter of the slide plate (52) is equal to the maximum inner diameter of the mounting hole (22), and the thickness of the slide plate (52) is greater than the diameter of the oil passage (54).

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