Novel supporting leg control valve

Abstract

The utility model discloses a novel supporting leg control valve which comprises a control module assembly and a plurality of oil cylinder supporting legs, and two hydraulic pipes are installed between the control module assembly and the oil cylinder supporting legs in a communicated mode. The hydraulic control one-way valve is additionally arranged on the hydraulic pipe of the rod cavity, the hydraulic control one-way valve is of a cone valve structure, internal leakage is small, oil pressure of the rod cavity can be effectively kept, the hydraulic control one-way valve is slightly different from a device without a hydraulic control one-way valve in the prior art during normal work, but after the device is stored for a period of time, the hydraulic control one-way valve is not damaged. The hydraulic control one-way valve with a rod cavity can play a role in keeping, so that a piston rod cannot extend out due to leakage of an oil cylinder, the problem is generally solved in an electric control mode in the prior art on an aerial work platform with supporting legs, and the defect is that the problem of time delay occurs during walking. The problem that the oil cylinder leaks and stretches out is solved in a hydraulic mode, and walking can be achieved without the landing leg contraction action in the walking process.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial work lifting equipment, in particular to a new outrigger control valve. Background Art

[0002] In the field of lifting equipment, the support device is a critical component for ensuring stable and safe operation. Traditional lifting equipment support devices typically utilize a hydraulic outrigger system, which controls the raising and lowering of the four outrigger cylinders through a reversing control valve and a cylinder valve block. However, this system has significant technical flaws. Due to internal leakage between the reversing valve and the cylinder, when the equipment is parked for extended periods, the rod chamber of the cylinder cannot effectively maintain oil pressure, causing the cylinder to naturally extend under its own weight. This not only affects the normal operation of the equipment but can also cause unpredictable dangers during operation, posing safety risks to operators and the surrounding environment.

[0003] In addition, lifting equipment faces another challenge when operating outdoors, especially in complex environments such as construction sites. Due to the high concentration of sand and gravel in the equipment's working environment, these sand and gravel can easily accumulate under the support plate, forming a loose layer of sand and gravel. Over time, this layer of sand and gravel will gradually thicken, seriously affecting the stability of the support plate's contact with the ground. The instability of the support plate will cause the entire lifting equipment to shake during operation, which not only reduces operating efficiency but also increases the risk of safety accidents. Therefore, while exploring solutions to improve the hydraulic system, engineers must also consider how to effectively remove sand and gravel from under the support plate to ensure the stability and reliability of the support device. Developing a new outrigger control valve group that can not only solve the problem of internal leakage but also take into account the stability of the support plate is of great significance to improving the safety and operating efficiency of lifting equipment. Utility Model Content

[0004] The purpose of the utility model is to provide a new outrigger control valve to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a new support leg control valve, including a control module assembly and multiple cylinder support legs, two hydraulic pipes are installed between the control module assembly and the multiple cylinder support legs, a piston rod body is installed in the interior of the cylinder support leg for sliding, the control module assembly includes multiple support leg cylinder valve blocks and support leg cylinder control valve blocks, multiple support leg cylinder valve blocks are respectively connected to the support leg cylinder control valve blocks, one end of the two hydraulic pipes are respectively connected to the rodless cavity and the rod cavity of the cylinder leg, the other end of the two hydraulic pipes are connected to multiple support leg cylinder valve blocks, a hydraulically controlled one-way valve is provided on the hydraulic pipe connected to the rod cavity of the cylinder leg, a support plate is fixedly installed on the bottom end of the piston rod body, and a cleaning component is provided between the support plate and the cylinder leg.

[0006] As a further description of the above technical solution: the cleaning component includes a cleaning groove, which is arranged in a ring shape and fixedly installed under a plurality of cylinder legs, a plurality of ball screws are fixedly installed at the top of the interior of the cleaning groove, and a lifting and rotating component is provided on the plurality of ball screws, and a connecting block is provided on the side wall of the support plate, and the plurality of lifting and rotating components include a lifting ring, a connecting plate fixedly installed on the side wall of the lifting ring, and a cleaning brush.

[0007] As a further description of the above technical solution: the lifting and rotating assembly also includes a rotating ring, which is threadedly connected to the ball screw.

[0008] As a further description of the above technical solution: a connecting bearing is provided between the rotating ring and the lifting ring, and the cleaning brush is provided at the bottom end of the rotating ring.

[0009] As a further description of the above technical solution: the side walls of the support plate are all provided with sliding grooves, a second spring is arranged inside the sliding groove, one end of the second spring is fixedly connected to the connecting block, and the top ends of the connecting block and the connecting plate are respectively provided with a second inclined surface and a first inclined surface.

[0010] As a further description of the above technical solution: a first spring is fixedly installed on the top end of the lifting ring, and the top end of the first spring is fixedly connected to the top wall inside the cleaning tank.

[0011] As a further description of the above technical solution: a plurality of through grooves are formed on the side wall of the cleaning tank.

[0012] As a further description of the above technical solution: a limit block is fixedly installed at the bottom end of the ball screw.

[0013] The utility model provides a new outrigger control valve with the following beneficial effects:

[0014] 1. By adding a hydraulically controlled one-way valve to the hydraulic pipe of the rod chamber, the structural cone valve structure of the hydraulically controlled one-way valve has relatively small internal leakage and can effectively maintain the oil pressure in the rod chamber. During normal operation, it is not much different from the device without a hydraulically controlled one-way valve in the prior art. However, after the equipment has been stored for a period of time, the hydraulically controlled one-way valve in the rod chamber can play a maintaining role, so that the oil cylinder will not extend the piston rod due to leakage. On aerial work platforms with outriggers, the prior art usually uses an electronic control method to solve this problem. The disadvantage of this is that there will be a delay problem when walking. The problem of oil cylinder leakage and extension is solved by hydraulic means, and walking can be achieved without retracting the outriggers.

[0015] 2. By setting up a cleaning assembly, when the lower support plate is extended, the cleaning assembly can clean the bottom of the support plate, so that the support plate is supported more stably on the ground, and the connecting block of the side wall of the support plate in the cleaning assembly is stuck on the connecting plate. The connecting plate can provide a certain supporting force for the support plate and also play a certain role in preventing the piston rod body from falling due to its own weight.

[0016] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0017] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a new outrigger control valve proposed in the utility model;

[0019] Figure 2 This is the hydraulic principle diagram of the utility model;

[0020] Figure 3 This is a three-dimensional schematic diagram of the installation of the cleaning component on the oil cylinder leg 2 of the present invention;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure inside the cleaning component of the utility model;

[0022] Figure 5 This is a schematic cross-sectional view of the cleaning component of the present invention;

[0023] Figure 6 For the utility model Figure 5 A schematic diagram of the enlarged structure at point A;

[0024] Figure 7 This is a schematic cross-sectional view of the lifting ring, rotating ring and bearing of the utility model;

[0025] Figure 8 It is a schematic diagram of the top view of the lifting ring, rotating ring and bearing of the utility model.

[0026] Legend:

[0027] 1. Control module assembly; 2. Cylinder leg; 6. Hydraulic pipe; 7. Piston rod body; 8. Support plate; 9. Cleaning groove; 10. Ball screw; 11. Through groove; 12. First spring; 13. Rotating ring; 14. Connecting plate; 15. Connecting block; 16. Slide groove; 17. Second spring; 18. First inclined plane; 19. Second inclined plane; 20. Cleaning brush; 21. Lifting ring; 22. Connecting bearing; 101. Hydraulic control one-way valve; 102. Cylinder valve block; 103. Cylinder control valve block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Reference Figure 1-8 , a new leg control valve, including a control module assembly 1 and multiple cylinder legs 2, two hydraulic pipes 6 are installed between the control module assembly 1 and the multiple cylinder legs 2, a piston rod body 7 is slidably installed inside the cylinder leg 2, the control module assembly 1 includes multiple leg cylinder valve blocks 102 and leg cylinder control valve blocks 103, multiple leg cylinder valve blocks 102 are respectively connected to the leg cylinder control valve block 103, one end of the two hydraulic pipes 6 is respectively connected to the rodless cavity and the rod cavity of the cylinder leg 2, the other end of the two hydraulic pipes 6 is connected to the multiple leg cylinder valve blocks 102, a hydraulically controlled one-way valve 101 is provided on the hydraulic pipe 6 connected to the rod cavity of the cylinder leg 2, and a support plate 8 is fixedly installed at the bottom end of the piston rod body 7, and a support plate 8 is provided between the support plate 8 and the cylinder leg 2. Cleaning components; when it is necessary to control multiple cylinder legs 2 to extend the internal piston rod body 7 together with the support plate 8, the control valve SV2 electromagnet and the cylinder valve blocks SV6, SV7, SV8, and SV9 are energized at the same time, and the oil inlet from the control valve A port passes through the V1 port of the hydraulically controlled one-way valve 101, enters the E port of the four leg cylinder valve blocks, and enters the rodless cavity of the cylinder to realize the simultaneous extension of the four cylinders. When it is necessary to control multiple cylinder legs 2 to retract the internal piston rod body 7 together with the support plate 8, the control valve SV3 electromagnet and the cylinder valve blocks SV6, SV7, SV8, and SV9 are energized at the same time, and the oil inlet from the control valve B port passes through the V2 port of the hydraulically controlled one-way valve 101, enters the R port of the leg cylinder valve block, and enters the rod cavity of the four cylinders to realize the simultaneous retraction of the four cylinders. The above-mentioned simultaneous extension and retraction of the four cylinders are all existing technologies and are not described in detail.

[0030] To address the problem of "when equipment is stored for a long time, internal leakage will occur due to the deadweight of the oil cylinder piston, and the oil cylinder will naturally extend", the present invention adds a hydraulically controlled non-return valve 101 to the hydraulic pipe 6 of the rod chamber. The structural cone valve structure of the hydraulically controlled non-return valve 101 has relatively low internal leakage and can effectively maintain the oil pressure in the rod chamber. During normal operation, it is not much different from the device without the hydraulically controlled non-return valve 101 in the prior art. However, after the equipment has been stored for a period of time, the hydraulically controlled non-return valve 101 in the rod chamber can play a maintenance role, so that the oil cylinder will not extend due to leakage and the piston rod will not extend. On aerial work platforms with outriggers, the prior art usually solves this problem through electronic control. The disadvantage of this is that there will be a delay when moving. The hydraulic method solves the problem of oil cylinder leakage and extension. Walking can be achieved without retracting the outriggers. In addition, during the process of extending the lower support plate 8, the cleaning component can clean the bottom of the support plate 8, so that the support plate 8 is supported more stably on the ground.

[0031] As the preferred technical solution of this embodiment, the cleaning assembly includes a cleaning groove 9, which is annular and fixedly installed under a plurality of cylinder legs 2. A plurality of ball screws 10 are fixedly installed on the top of the interior of the cleaning groove 9. A lifting and rotating assembly is provided on the plurality of ball screws 10. The side wall of the support plate 8 is provided with a connecting block 15. The plurality of lifting and rotating assemblies include a lifting ring 21, a connecting plate 14 fixedly installed on the side wall of the lifting ring 21, and a cleaning brush 20. When the support plate 8 is extended downward, the connecting block 15 on the side wall of the support plate 8 Contact with the connecting plate 14 on the lifting and rotating assembly can make the internal rotating ring 13 rotate under the action of the ball screw 10. The rotation of the rotating ring 13 drives multiple cleaning brushes 20 to clean the bottom of the support plate 8, so that the dust and sand under the support plate 8 are cleaned before the cleaning plate reaches the ground, and when the support plate 8 is retracted into the cleaning tank 9, the connecting block 15 on the peripheral wall of the support plate 8 is stuck on the connecting plate 14. The connecting plate 14 can provide a certain supporting force to the support plate 8, and can also play a certain role in preventing the piston rod body 7 from falling due to its own weight.

[0032] As the preferred technical solution of this embodiment, the lifting and rotating assembly also includes a rotating ring 13, which is threadedly connected to the ball screw 10; the rotating ring 13 slides up and down on the ball screw 10 and can rotate, thereby driving the cleaning brush 20 to clean the support plate 8.

[0033] As a preferred technical solution of this embodiment, a connecting bearing 22 is provided between the rotating ring 13 and the lifting ring 21, and the cleaning brush 20 is provided at the bottom end of the rotating ring 13; the lifting ring 21 moves up and down on the ball screw 10, and rotation will occur between the rotating ring 13 and the ball screw 10. Under the action of the connecting bearing 22, it can be ensured that when the rotating ring 13 drives the cleaning brush 20 to rotate, the lifting ring 21 will not rotate, and can move downward stably under the action of the connecting block 15 pressing the connecting plate 14 downward.

[0034] As a preferred technical solution of this embodiment, the side walls of the support plate 8 are all provided with a slide groove 16, and a second spring 17 is provided inside the slide groove 16. One end of the second spring 17 is fixedly connected to the connecting block 15, and the top of the connecting block 15 and the connecting plate 14 are respectively provided with a second inclined surface 19 and a first inclined surface 18; a limit block is provided below the ball screw 10 to prevent the lifting ring 21 from disengaging. When the connecting block 15 presses the connecting plate 14 to the limit position, that is, the limit block position, the connecting block 15 and the second inclined surface 19 slide relative to each other, and the connecting block 15 slides into the inside of the slide groove 16. When the connecting block 15 continues to move downward, that is, leaves the position of the connecting plate 14, the connecting block 15 resets. When the support plate 8 moves upward, it is necessary to ensure that the connecting block 15 is smoothly stuck in the top of the connecting plate 14. When the connecting block 15 leaves the horizontal position of the connecting plate 14 upward, the connecting block 15 is reset under the action of the second spring 17, thereby realizing that the connecting block 15 is smoothly stuck in the top of the connecting plate 14, providing conditions for cleaning the bottom end of the support plate 8 next time.

[0035] As the preferred technical solution of this embodiment, a first spring 12 is fixedly installed on the top of the lifting ring 21, and the top of the first spring 12 is fixedly connected to the top wall inside the cleaning tank 9; the first spring 12 is provided on the top of the lifting ring 21, which can achieve the effect of resetting the lifting ring 21 upward.

[0036] As a preferred technical solution of this embodiment, the side wall of the cleaning tank 9 is provided with a plurality of through slots 11 ; the dust cleaned by the cleaning brush 20 can fly out of the interior of the cleaning tank 9 through the through slots 11 provided on the side wall of the cleaning tank 9 .

[0037] As a preferred technical solution of this embodiment, a limit block 23 is fixedly installed at the bottom end of the ball screw 10; the limit block 23 is provided to prevent the lifting ring 21 from separating from the ball screw 10 when the lifting ring 21 slides downward.

[0038] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new outrigger control valve, comprising a control module assembly (1) and a plurality of oil cylinder outriggers (2), characterized in that: Two hydraulic pipes (6) are connected and installed between the control module assembly (1) and the plurality of oil cylinder legs (2). A piston rod body (7) is slidably installed inside the oil cylinder legs (2). The control module assembly (1) includes a plurality of oil cylinder valve blocks (102) and oil cylinder control valve blocks (103). The plurality of oil cylinder valve blocks (102) are respectively connected to the oil cylinder control valve blocks (103). One end of the two hydraulic pipes (6) is respectively connected to the rodless cavity and the rod cavity of the oil cylinder legs (2). The other end of the two hydraulic pipes (6) is connected to the plurality of oil cylinder valve blocks (102). A hydraulically controlled one-way valve (101) is provided on the hydraulic pipe (6) connected to the rod cavity of the oil cylinder legs (2). A support plate (8) is fixedly installed at the bottom end of the piston rod body (7). A cleaning component is provided between the support plate (8) and the oil cylinder legs (2).

2. A new outrigger control valve according to claim 1, characterized in that: The cleaning assembly comprises a cleaning trough (9), which is arranged in an annular shape and fixedly mounted below a plurality of oil cylinder legs (2); a plurality of ball screws (10) are fixedly mounted on the top end of the interior of the cleaning trough (9); a lifting and rotating assembly is arranged on the plurality of ball screws (10); a connecting block (15) is arranged on the side wall of the support plate (8); and the plurality of lifting and rotating assemblies comprise a lifting ring (21), a connecting plate (14) fixedly mounted on the side wall of the lifting ring (21), and a cleaning brush (20).

3. A new outrigger control valve according to claim 2, characterized in that: The lifting and rotating assembly further comprises a rotating ring (13), and the rotating ring (13) is threadedly connected to the ball screw (10).

4. A new outrigger control valve according to claim 3, characterized in that: A connecting bearing (22) is provided between the rotating ring (13) and the lifting ring (21), and the cleaning brush (20) is provided at the bottom end of the rotating ring (13).

5. A new outrigger control valve according to claim 1, characterized in that: The supporting plate (8) is provided with a sliding groove (16) on all four side walls, a second spring (17) is provided inside the sliding groove (16), one end of the second spring (17) is fixedly connected to the connecting block (15), and the top ends of the connecting block (15) and the connecting plate (14) are respectively provided with a second inclined surface (19) and a first inclined surface (18).

6. A new outrigger control valve according to claim 3, characterized in that: A first spring (12) is fixedly mounted on the top end of the lifting ring (21), and the top end of the first spring (12) is fixedly connected to the top wall inside the cleaning tank (9).

7. A new outrigger control valve according to claim 2, characterized in that: The side wall of the cleaning tank (9) is provided with a plurality of through slots (11).

8. A new outrigger control valve according to claim 2, characterized in that: A limit block (23) is fixedly mounted on the bottom end of the ball screw (10).

Images