Multi-petal hydraulic grab bucket control valve block

Abstract

The utility model discloses a multi-clack hydraulic grab bucket control valve block, and relates to the technical field of hydraulic grab buckets, the multi-clack hydraulic grab bucket control valve block comprises a valve block body, and a swing oil cylinder is arranged at the bottom of the valve block body; a plurality of connecting inserting rods are arranged on the side, close to the valve block body, of the swing oil cylinder, and connecting inserting grooves allowing the connecting inserting rods to be inserted therein are formed in the valve block body. The valve block body is provided with a plurality of fixing seats, arc-shaped clamping plates are rotationally arranged at the ends, away from the valve block body, of the fixing seats, the swing oil cylinder is provided with a mounting seat, and the mounting seat is provided with clamping grooves capable of being clamped with the arc-shaped clamping plates. When the swing oil cylinder is installed, the connecting inserting rod corresponds to the connecting inserting groove, and after the position of the swing oil cylinder is fixed, the arc-shaped clamping plate is rotated till the arc-shaped clamping plate is clamped with the hoop groove. When the swing oil cylinder needs to be disassembled, the connection relation between the arc-shaped clamping plate and the hoop groove is relieved, the swing oil cylinder is taken out in a sliding mode, and the problem that the swing oil cylinder is inconvenient to disassemble and assemble is solved.

Description

Technical Field

[0001] This application relates to the field of hydraulic grab technology, and in particular to a multi-lobed hydraulic grab control valve block. Background Technology

[0002] A grab bucket is a special tool used by cranes to grab dry bulk goods. According to the driving method, it can be divided into mechanical grab buckets and hydraulic grab buckets. A hydraulic grab bucket is a working device that uses a hydraulic power source to provide power to hydraulic cylinders and swing cylinders, thereby driving two or more grab buckets to open and close to grab materials.

[0003] In existing multi-lobed hydraulic grabs, the swing cylinder is driven by a hydraulic power source through a valve block. The grab is mounted on the output end of the swing cylinder through a rotating shaft. The swing cylinder drives the grab to make a circular motion. Multiple grabs are driven to interlock with each other, and the front ends of the side walls of adjacent grabs are attached to each other.

[0004] Regarding the aforementioned technologies, the inventors believe that existing multi-lobed hydraulic grabs require disassembly for inspection and cleaning after grabbing materials with high debris content. The threaded connection of the swing cylinder and valve body makes disassembly and assembly cumbersome and inconvenient. Utility Model Content

[0005] The purpose of this application is to provide a multi-lobed hydraulic grab control valve block to improve the problem of inconvenient disassembly and assembly of the swing cylinder.

[0006] The multi-lobed hydraulic grab control valve block provided in this application adopts the following technical solution:

[0007] A multi-lobed hydraulic grab control valve block includes a valve block body, a swing cylinder at the bottom of the valve block body, a plurality of connecting rods on the side of the swing cylinder near the valve block body, a connecting slot for inserting the connecting rods on the valve block body, a plurality of fixed seats on the valve block body, an arc-shaped clamping plate rotatably mounted on the end of the fixed seat away from the valve block body, a mounting seat on the swing cylinder, and a clamping groove on the mounting seat that can engage with the arc-shaped clamping plate.

[0008] By adopting the above technical solution, when installing the swing cylinder, the connecting rod corresponds to the connecting slot. After fixing the position of the swing cylinder, rotate the arc-shaped clamping plate until the arc-shaped clamping plate engages with the clamping groove. When it is necessary to disassemble the swing cylinder, disconnect the arc-shaped clamping plate and the clamping groove, and slide the swing cylinder out. This improves the problem of the swing cylinder being inconvenient to disassemble and assemble.

[0009] Optionally, the connection slot is provided with an elastic ring.

[0010] By adopting the above technical solution, when the connecting rod is inserted into the connecting slot for fixation, the surface of the elastic ring and the surface of the connecting rod are tightly fitted together. The elastic abutment action enhances the tightness of the fit between the two, thereby improving the stability of the connecting slot in fixing the connecting rod.

[0011] Optionally, the connecting slot is provided with a retaining groove for the elastic ring to be secured.

[0012] By adopting the above technical solution, the elastic ring and the retaining groove are designed to be embedded, which can effectively enhance the fixing effect of the elastic ring in the connecting slot and reduce the situation where the elastic ring comes out of the retaining groove when disassembling and assembling the connecting rod, thereby ensuring that the elastic ring can play a continuous and stable fixing role.

[0013] Optionally, the connecting rod is provided with a plug end, and the side wall of the plug end is in contact with the inner side wall of the connecting slot.

[0014] By adopting the above technical solution, when the connecting rod is inserted into the connecting slot, the side wall of the cylindrical plug end can abut against the inner side wall of the connecting slot, thereby strengthening the tightness of the fit between the connecting rod and the connecting slot.

[0015] Optionally, the end of the plug-in terminal away from the swing cylinder is provided with a guide radius.

[0016] By adopting the above technical solution, the guide rounded corners facilitate the insertion end to pass through the elastic ring, thereby fixing the insertion and engagement of the connecting rod and the connecting slot.

[0017] Optionally, the clamp groove is provided with an elastic pad that can fit against the arc-shaped clamp plate.

[0018] By adopting the above technical solution, the addition of the elastic pad can effectively optimize the cooperation mechanism between the clamp groove and the arc-shaped clamp plate. The flexible material used can adaptively compensate for the angular deviation and displacement gap generated by the arc-shaped clamp plate during rotation through the elastic deformation of the elastic pad.

[0019] Optionally, a first magnetic element is provided at the end of the arc-shaped card plate away from the fixed base, and a second magnetic element is embedded inside the elastic pad.

[0020] By adopting the above technical solution, by setting a first magnetic component and a second magnetic component on the arc-shaped clamping plate and the elastic pad respectively, the magnetic attraction of the two components is used to quickly fix the arc-shaped clamping plate and the clamping groove; when separation is required, the magnetic connection can be easily overcome by manpower alone, and the engagement state of the arc-shaped clamping plate and the clamping groove can be conveniently controlled, thus improving the problem of the swing cylinder being inconvenient to disassemble and assemble.

[0021] Optionally, the arc-shaped card plate is provided with a mounting groove for securing the first magnetic component.

[0022] By adopting the above technical solution, the first magnetic component fits tightly against the inner wall of the mounting groove of the arc-shaped clamping plate through an interference fit. The bottom plane of the first magnetic component is flush with the edge of the mounting groove opening, ensuring that a uniform reference assembly surface is formed when the arc-shaped clamping plate and the clamping groove are engaged.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. When installing the swing cylinder, align the connecting rod with the connecting slot. After fixing the position of the swing cylinder, rotate the arc-shaped clamping plate until it engages with the clamping groove. When it is necessary to disassemble the swing cylinder, disconnect the arc-shaped clamping plate from the clamping groove and slide the swing cylinder out. This improves the problem of inconvenient disassembly and assembly of the swing cylinder.

[0025] 2. The addition of the elastic pad can effectively optimize the fit mechanism between the clamp groove and the arc-shaped clamp plate. The flexible material used can adaptively compensate for the angular deviation and displacement gap generated by the arc-shaped clamp plate during rotation through the elastic deformation of the elastic pad.

[0026] 3. By setting a first magnetic component and a second magnetic component on the arc-shaped clamping plate and the elastic pad respectively, the magnetic attraction of the two components is used to quickly fix the arc-shaped clamping plate and the clamping groove; when separation is required, the magnetic connection can be easily overcome by manpower alone, and the engagement state of the arc-shaped clamping plate and the clamping groove can be conveniently controlled, thus improving the problem of the swing cylinder being inconvenient to disassemble and assemble. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of a multi-lobed hydraulic grab control valve block structure;

[0028] Figure 2 It is a schematic diagram used to illustrate the positional relationship between the curved plate, the mounting base, and the clamp groove;

[0029] Figure 3 It is a schematic diagram used to illustrate the positional relationship between the first magnetic component, the second magnetic component, and the elastic pad;

[0030] Figure 4 It is a schematic diagram used to illustrate the positional relationship between the plug end, the elastic ring, and the guide fillet.

[0031] In the diagram, 1. Valve block; 11. Swing cylinder; 12. Fixed seat; 13. Arc-shaped clamping plate; 14. Mounting seat; 15. Clamping groove; 2. Connecting rod; 21. Connecting slot; 22. Elastic ring; 23. Embedding groove; 24. Plug-in end; 25. Guide rounded corner; 3. Elastic pad; 31. First magnetic component; 32. Second magnetic component; 33. Mounting groove. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1 -Appendix Figure 4This application will be described in further detail below.

[0033] A multi-lobed hydraulic grab control valve block, as shown in the reference Figure 1 It includes a square-shaped valve block 1, and a swing cylinder 11 is provided at the bottom of the valve block 1. According to the hydraulic grab bucket’s requirement for the number of grab bucket petals, the corresponding number of swing cylinders 11 are selected and installed on the valve block 1.

[0034] Reference Figure 1 and Figure 2 The swing cylinder 11 is fixedly provided with a number of connecting rods 2 by welding on the side near the valve block 1. The valve block 1 is provided with a connecting slot 21 for inserting the connecting rods 2. In this embodiment, the connecting rods 2 are round rods, and the number of connecting rods 2 is preferably 4.

[0035] Reference Figure 1 and Figure 2 The valve block 1 is provided with a number of fixing seats 12. In this embodiment, the fixing seat 12 is a rectangular plate with one end being semi-circular. The number of fixing seats 12 is preferably two. The end of the fixing seat 12 away from the valve block 1 is provided with an arc-shaped clamping plate 13 through a pin. In this embodiment, the arc-shaped clamping plate 13 is a semi-circular arc plate with a square end.

[0036] Reference Figure 1 and Figure 2 The swing cylinder 11 is fixedly mounted with a block-shaped mounting base 14 by welding. The mounting base 14 is provided with a clamping groove 15 that can engage with the arc-shaped clamping plate 13. When the arc-shaped clamping plate 13 and the clamping groove 15 are engaged, the square block-shaped end of the arc-shaped clamping plate 13 is inserted into the clamping groove 15, thereby fixing the arc-shaped clamping plate 13 and the clamping groove 15. When it is necessary to adjust the connection state between the swing cylinder 11 and the valve block 1, the arc-shaped clamping plate 13 can be manually rotated to adjust its engagement relationship with the clamping groove 15, thereby quickly achieving connection or separation, thus improving the problem of the swing cylinder 11 being inconvenient to disassemble and assemble.

[0037] Reference Figure 2 and Figure 3 The clamp groove 15 is provided with an elastic pad 3 that can fit with the arc-shaped clamp plate 13 by embedding and fixing. The elastic pad 3 is made of flexible material and can adaptively compensate for the displacement gap when the arc-shaped clamp plate 13 and the clamp groove 15 rotate and cooperate through its own elastic deformation. In this embodiment, the elastic pad 3 is in the shape of a hollow square plate, and the material of the elastic pad 3 is preferably rubber.

[0038] Reference Figure 3The arc-shaped clamping plate 13 is provided with a first magnetic element 31 at the end away from the fixed base 12, and a second magnetic element 32 is embedded in the elastic pad 3. By using the magnetic attraction of the two, the arc-shaped clamping plate 13 and the clamping groove 15 can be quickly fixed and separated, which improves the problem of the swing cylinder 11 being inconvenient to disassemble and assemble.

[0039] Reference Figure 3 The arc-shaped card plate 13 is provided with a mounting groove 33 for the first magnetic component 31 to be embedded. The bottom plane of the first magnetic component 31 is flush with the edge of the mounting groove 33, so as to ensure that a uniform reference assembly surface is formed when the arc-shaped card plate 13 and the clamp groove 15 are engaged.

[0040] Reference Figure 4 The connecting slot 21 is provided with an elastic ring 22. In this embodiment, the elastic ring 22 is circular and preferably made of rubber. The elastic ring 22 enhances the tightness of the fit between the connecting slot 21 and the connecting rod 2 through elastic abutment, thereby improving the stability of the connecting slot 21 in fixing the connecting rod 2.

[0041] Reference Figure 4 The connecting slot 21 is provided with a retaining groove 23 for the elastic ring 22 to be embedded. The elastic ring 22 and the retaining groove 23 adopt an embedded fit design, which can effectively enhance the fixing effect of the elastic ring 22 in the connecting slot 21, reduce the situation where the elastic ring 22 comes out of the retaining groove 23 when the connecting rod 2 is disassembled and assembled, thereby ensuring that the elastic ring 22 continues to play a stable fixing role.

[0042] Reference Figure 4 The connecting rod 2 is fixedly provided with a cylindrical plug end 24 by welding. The side wall of the plug end 24 fits against the inner side wall of the connecting slot 21. When the connecting rod 2 is inserted into the connecting slot 21, the plug end 24 passes through the elastic ring 22 and the side wall of the plug end 24 abuts against the elastic ring 22, thereby stabilizing the fit between the connecting rod 2 and the connecting slot 21.

[0043] Reference Figure 4 The end of the plug-in end 24 away from the swing cylinder 11 is provided with an arc-shaped guide rounded corner 25. The guide rounded corner 25 facilitates the insertion of the connecting rod 2 into the connecting slot 21, and guides the plug-in end 24 to pass smoothly through the elastic ring 22. After passing through the elastic ring 22, the elastic resistance generated by the elastic ring 22 and the plug-in end 24 forms an anti-disengagement structure, making the connection between the valve block 1 and the swing cylinder 11 more stable. The force required to manually pull out the connecting rod 2 is greater than the force required when inserting it, thereby ensuring that the connecting rod 2 remains stable after insertion.

[0044] The implementation principle of this application embodiment is as follows:

[0045] When it is necessary to install the swing cylinder 11 on the valve block 1, first align the connecting rod 2 with the connecting slot 21 to initially determine the position of the swing cylinder 11. Then, manually rotate the arc-shaped clamping plate 13 to engage with the clamping groove 15, thus realizing the installation of the swing cylinder 11. When it is necessary to disassemble the swing cylinder 11, manually release the connection between the arc-shaped clamping plate 13 and the clamping groove 15, and slide the swing cylinder 11 out. This improves the problem of the swing cylinder 11 being inconvenient to disassemble and assemble.

[0046] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A multi-lobed hydraulic grab control valve block, comprising a valve block body (1), wherein a swing cylinder (11) is provided at the bottom of the valve block body (1); characterized in that: The swing cylinder (11) is provided with several connecting rods (2) on the side near the valve block (1), and the valve block (1) is provided with a connecting slot (21) for inserting the connecting rods (2); the valve block (1) is provided with several fixed seats (12), and an arc-shaped clamping plate (13) is rotatably provided at the end of the fixed seat (12) away from the valve block (1); the swing cylinder (11) is provided with a mounting seat (14), and the mounting seat (14) is provided with a clamping groove (15) that can engage with the arc-shaped clamping plate (13).

2. The multi-lobed hydraulic grab control valve block according to claim 1, characterized in that: The connecting slot (21) is provided with an elastic ring (22).

3. The multi-lobed hydraulic grab control valve block according to claim 2, characterized in that: The connecting slot (21) is provided with a retaining groove (23) for the elastic ring (22) to be secured.

4. The multi-lobed hydraulic grab control valve block according to claim 3, characterized in that: The connecting rod (2) is provided with a plug end (24), and the side wall of the plug end (24) is in contact with the inner side wall of the connecting slot (21).

5. The multi-lobed hydraulic grab control valve block according to claim 4, characterized in that: The end of the plug-in end (24) away from the swing cylinder (11) is provided with a guide radius (25).

6. The multi-lobed hydraulic grab control valve block according to claim 1, characterized in that: The clamp groove (15) is provided with an elastic pad (3) that can fit against the arc-shaped clamp plate (13).

7. The multi-lobed hydraulic grab control valve block according to claim 6, characterized in that: The arc-shaped card plate (13) is provided with a first magnetic element (31) at the end away from the fixed base (12), and a second magnetic element (32) is embedded inside the elastic pad (3).

8. The multi-lobed hydraulic grab control valve block according to claim 7, characterized in that: The arc-shaped card plate (13) is provided with a mounting groove (33) for the first magnetic component (31) to be embedded.

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