Hydraulic station and novel electric hydraulic multi-petal grab bucket

Abstract

According to the hydraulic station and the novel electric hydraulic multi-petal grab bucket, the hydraulic station is designed to be an independent module, the hydraulic station can be integrally hoisted out, on-site overhaul is achieved, the overhaul efficiency is improved, and an oil tank is convenient to clean; on the basis of ensuring the strength of the cylinder body, the weight of the cylinder body is reduced, the internal space is increased, enough space is provided for arranging all parts of the hydraulic station on the upper surface of an oil tank, gaps between the adjacent support connecting pieces can serve as service ports, all the parts of the hydraulic station can be overhauled or taken out through the service ports, and the service life of the hydraulic station is prolonged. And convenience is provided for maintenance of the hydraulic station.

Description

Technical Field

[0001] The utility model belongs to the technical field of grab buckets, and particularly relates to a hydraulic station and a new type of electric hydraulic multi-lobe grab bucket. Background Art

[0002] An electric hydraulic multi-lobe grab bucket is a mechanism for grabbing materials, and is widely used in places such as steel mills, power plants, and waste treatment plants. This grab bucket can grab irregularly shaped materials such as scrap steel, steel slag, and garbage, and has the advantages of high grabbing efficiency and good grabbing effect.

[0003] An electric hydraulic multi-lobe grab bucket usually consists of a central cylinder body, a plurality of bucket lobes, a plurality of oil cylinders, and a hydraulic station. Each bucket lobe is driven by an independent oil cylinder, and each oil cylinder is supplied with oil by the hydraulic station in the central cylinder body.

[0004] The hydraulic station consists of an oil tank, a hydraulic pump for pumping oil from the oil tank to the oil cylinder, a motor for driving the hydraulic pump, and a controller for controlling the motor.

[0005] In the prior art, the hydraulic station is not an independent module. Its oil tank is designed to be directly welded to the lower part of the central cylinder body, which is not convenient for cleaning the oil tank. At the same time, other components outside the oil tank are scattered and fixed in the central cylinder body, and the hydraulic station as a whole cannot be lifted out of the central cylinder body for maintenance. Even if components such as the hydraulic pump and the motor are lifted out, it is still necessary to go to the maintenance station to cooperate with the oil tank in the station to achieve maintenance, and the efficiency is low. Summary of the Utility Model

[0006] Based on this, in view of the above technical problems, a hydraulic station and a new type of electric hydraulic multi-lobe grab bucket are provided.

[0007] The technical solution adopted by the utility model is as follows:

[0008] As a first aspect of the utility model, a hydraulic station is provided, which includes an oil tank, a hydraulic pump for pumping oil from the oil tank to the oil cylinder, a motor for driving the hydraulic pump, and a controller. The hydraulic pump is connected to the oil chamber of the oil tank through a pipeline. The output shaft of the motor is connected to the input shaft of the hydraulic pump, and the controller is connected to the motor for control. The cross-section of the oil tank is circular, a horizontal connecting edge is formed on the peripheral surface of the upper part of the oil tank, bolt holes are provided on the connecting edge, and the hydraulic pump, the motor, and the controller are all fixed on the upper surface of the oil tank.

[0009] The hydraulic station provided by the embodiment of the present application is designed as an independent module. Its fuel tank is not directly connected to the central cylinder body, but is designed with a connecting edge. The fuel tank can be detachably connected to the central cylinder body through this connecting edge. At the same time, other components outside the fuel tank are fixed on the upper surface of the fuel tank. Therefore, the entire hydraulic station can be lifted out as a whole to achieve on-site maintenance, without the need to cooperate with the oil cylinders in the maintenance station as in the prior art, improving the maintenance efficiency and facilitating the cleaning of the fuel tank.

[0010] As the second aspect of the present utility model, a new type of electric hydraulic multi-lobe grab is provided, including a central cylinder body, a plurality of lobes, a plurality of oil cylinders, and a hydraulic station for supplying oil to the plurality of oil cylinders. The upper side of the central cylinder body has a lifting outlet. The plurality of lobes and the plurality of oil cylinders correspond one by one and are evenly arranged along the circumferential direction of the central cylinder body. The lobes are hinged to the lower part of the central cylinder body, the upper end of the oil cylinder is hinged to the upper part of the central cylinder body, and the lower end is connected to the corresponding lobe. The hydraulic station is arranged inside the central cylinder body. It is characterized in that the central cylinder body includes an upper bracket, a lower bracket arranged below the upper bracket, and a plurality of bracket connectors corresponding one by one to the lobes and the oil cylinders. Both the upper bracket and the lower bracket are circular rings. The lifting outlet is formed on the upper bracket. The plurality of bracket connectors are evenly arranged around the upper bracket and the lower bracket. The upper and lower parts of the bracket connectors are respectively connected to the outer peripheral surfaces of the upper bracket and the lower bracket. The lobes and the oil cylinders are hinged to the corresponding bracket connectors. The hydraulic station is the hydraulic station provided in the first aspect above, and its fuel tank is embedded in the inner hole of the lower bracket, and the connecting edge of the fuel tank is detachably connected to the upper surface of the lower bracket through bolts.

[0011] For the new type of electric hydraulic multi-lobe grab provided by the present utility model, compared with the existing cylinder body structure, its central cylinder body structure not only reduces the weight of the cylinder body while ensuring the strength of the cylinder body, but also increases the internal space, providing sufficient space for the components of the hydraulic station to be arranged on the upper surface of the fuel tank. Moreover, the gaps between adjacent bracket connectors can all be used as maintenance openings, through which the components of the hydraulic station can be maintained or the components can be taken out, providing convenience for the maintenance of the hydraulic station. Description of the Drawings

[0012] The present utility model will be described in detail below in conjunction with the drawings and specific embodiments:

[0013] Figure 1 It is a structural schematic diagram of an electric hydraulic multi-lobe grab provided by an embodiment of the present utility model;

[0014] Figure 2 For Figure 1 A-A cross-sectional view of

[0015] Figure 3Schematic three-dimensional structure diagram of the central cylinder body of the embodiment of the present utility model;

[0016] Figure 4 Schematic side view structure diagram of the central cylinder body of the embodiment of the present utility model;

[0017] Figure 5 Schematic three-dimensional structure diagram of the hydraulic station of the embodiment of the present utility model;

[0018] Figure 6 Vertical sectional view of the hydraulic station of the embodiment of the present utility model. Detailed implementation manners

[0019] The embodiments of the present utility model will be described below in conjunction with the accompanying drawings of the specification. It should be noted that the embodiments involved in this specification are not exhaustive and do not represent the only embodiment of the present utility model. The following corresponding embodiments are only for clearly explaining the inventive content of the utility model patent of the present utility model, and do not limit its implementation manners. For those of ordinary skill in the art, various forms of changes and modifications can be made on the basis of the description of this embodiment. Any changes or modifications that belong to the technical concept and inventive content of the present utility model and are obvious are also within the protection scope of the present utility model.

[0020] As Figure 1 and Figure 2 shown, the embodiment of the present application provides a new type of electric-hydraulic multi-lobe grab, which includes a central cylinder body 1100, six bucket lobes 1200, six oil cylinders 1300, and a hydraulic station 1400.

[0021] The central cylinder body 1100 adopts an open structure. As Figure 3 shown, it specifically includes an upper bracket 1110, a lower bracket 1120, and six bracket connectors 1130.

[0022] Both the upper bracket 1110 and the lower bracket 1120 are in a circular ring shape. The inner hole of the upper bracket 1110 serves as the lifting outlet. A sling hole 1111 is provided on the upper bracket 1110 for installing the sling 2. The lower bracket 1120 is arranged below the upper bracket 1110.

[0023] The six bracket connectors 1130 correspond one-to-one to the six bucket lobes 1200 and the six oil cylinders 1300. The six bracket connectors 1130 are evenly arranged around the upper bracket 1110 and the lower bracket 1120.

[0024] As Figure 3 and Figure 4As shown in the figure, the bracket connecting member 1130 includes two connecting plates 1131 arranged at intervals left and right. There is a connecting rib 1132 between the two connecting plates 1131. The upper and lower ends of the connecting plates 1131 are respectively connected to the outer peripheral surfaces of the upper bracket 1110 and the lower bracket 1120. The upper and lower ends of the connecting plates 1131 both have hinge holes 1131a.

[0025] Among them, the gaps between adjacent bracket connecting members 1130 can all be used as inspection openings.

[0026] Compared with the existing cylinder structure, the structure of the above-mentioned central cylinder 1100 not only reduces the weight of the cylinder but also increases the internal space while ensuring the strength of the cylinder. To further increase the internal space, the connecting plate 1131 is designed to be composed of an upper section 1131a that inclines radially outward from top to bottom and a lower section 1131b that inclines radially inward from top to bottom. See Figure 3 .

[0027] The 6 bucket petals 1200 and the 6 oil cylinders 1300 are all arranged evenly along the circumference of the central cylinder 1100.

[0028] Each bucket petal 1200 is hinged to the hinge holes 1131a at the lower ends of the two connecting plates 1131 of the corresponding bracket connecting member 1130. The upper end of each oil cylinder 1300 is hinged to the hinge holes 1131a at the upper ends of the two connecting plates 1131 of the corresponding bracket connecting member 1130, and the lower end is connected to the corresponding bucket petal 1200.

[0029] The hydraulic station 1400 is arranged inside the central cylinder 1100. As Figure 5 shown, it includes an oil tank 1410, a hydraulic pump 1420, a motor 1430, and a controller 1440.

[0030] The cross-section of the oil tank 1410 is circular. It is embedded in the inner hole of the lower bracket 1120, which can effectively prevent oil leakage of the oil tank caused by external impact. A horizontal connecting edge 1411 is formed on the upper peripheral surface of the oil tank 1410. The connecting edge 1411 is detachably connected to the upper surface of the lower bracket 1120 by bolts.

[0031] To facilitate the installation of the oil tank 1410, a plurality of positioning blocks 1412 distributed circumferentially are provided on the peripheral surface of the oil tank 1410, and a positioning groove 1121 adapted to the positioning blocks 1412 is provided on the inner hole wall of the lower bracket 1120. See Figure 3 .

[0032] As Figure 5 shown, a lifting ring 1413 is provided on the upper surface of the oil tank 1410.

[0033] The hydraulic pump 1420 is used to pump oil from the oil tank 1410 to six hydraulic cylinders 1300. The motor 1430 is used to drive the hydraulic pump 1420. The controller 1440 is used to control the motor 1430. A return oil filter 1450 can be arranged on the return oil pipeline of the hydraulic pump 1420. The oil tank 1410, the hydraulic pump 1420, the motor 1430, the controller 1440 and the return oil filter 1450 are all fixed on the upper surface of the oil tank 1410, making the entire hydraulic station 1400 into an independent module, which can be lifted out integrally from the lifting outlet of the upper support 1110 for on-site maintenance.

[0034] Among them, due to the enlarged internal space of the central cylinder 1100, the hydraulic pump 1420 and the motor 1430 can be horizontally fixed on the upper surface of the oil tank 1410. Horizontally placing means that the input shaft 1421 of the hydraulic pump 1420 and the output shaft 1431 of the motor 1430 are both in the horizontal direction.

[0035] In order to avoid the connection structure between the hydraulic pump 1420 and the motor 1430 occupying too much space, as Figure 5 and Figure 6 shown, the end face of the input end of the hydraulic pump 1420 is in contact with the end face of the output end of the motor 1430 and is fixed by bolts. The input shaft 1421 of the hydraulic pump 1420 is connected to the output shaft 1431 of the motor 1430 inside the hydraulic pump 1420 or the motor 1430.

[0036] In this embodiment, as Figure 6 shown, the output shaft 1431 of the motor 1430 is entirely inside the motor 1430, that is, the connection end of the output shaft 1431 does not exceed the end face of the output end of the motor 1430. This connection end forms an axial connection hole 1431a. The input shaft 1421 of the hydraulic pump 1420 horizontally passes through the end face of the output end of the motor 1430 and extends into the connection hole 1431a to connect with it.

[0037] As can be seen from the above, for the new electric hydraulic multi - flap grab provided by the embodiment of the present application, compared with the existing cylinder structure of the central cylinder, on the basis of ensuring the strength of the cylinder, it not only reduces the weight of the cylinder, but also increases the internal space, enabling the components of the hydraulic station to be arranged on the upper surface of the oil tank, and the gaps between adjacent bracket connectors can all be used as maintenance openings, through which the components of the hydraulic station can be maintained or the components can be taken out, providing convenience for the maintenance of the hydraulic station.

[0038] Meanwhile, the hydraulic station in the embodiment of the present application is designed as an independent module. Its fuel tank is not directly connected to the central cylinder body, but is designed with a connecting edge. The fuel tank can be detachably connected to the central cylinder body through this connecting edge. At the same time, other components outside the fuel tank are fixed on the upper surface of the fuel tank. Therefore, the entire hydraulic station can be hoisted out as a whole to achieve on-site maintenance, without the need to cooperate with the oil cylinder of the maintenance station as in the prior art, improving the maintenance efficiency and facilitating the cleaning of the fuel tank.

[0039] In addition, different from the prior art where the motor is vertically arranged on the fuel tank, resulting in a relatively high center of gravity of the grab and instability when grabbing slope materials, since the internal space of the central cylinder body in the embodiment of the present application becomes larger, the hydraulic pump and the motor can be horizontally fixed on the upper surface of the fuel tank, reducing the center of gravity of the entire grab and improving the stability of the grab when grabbing slope materials.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and modifications.

Claims

1. A hydraulic station, comprising an oil tank, a hydraulic pump for pumping oil from the oil tank to an oil cylinder, a motor for driving the hydraulic pump, and a controller. The hydraulic pump is connected to the oil chamber of the oil tank through a pipeline. The output shaft of the motor is connected to the input shaft of the hydraulic pump. The controller is controllably connected to the motor, characterized in that, The cross-section of the fuel tank is circular. A horizontal connecting edge is formed on the upper peripheral surface of the fuel tank, and bolt holes are provided on the connecting edge. The hydraulic pump, the motor, and the controller are all fixed on the upper surface of the fuel tank.

2. A hydraulic station according to claim 1, characterized in that, Positioning blocks are provided on the peripheral surface of the fuel tank.

3. A hydraulic station according to claim 1, characterized in that, Both the hydraulic pump and the motor are horizontally fixed on the upper surface of the fuel tank.

4. A hydraulic station according to claim 3, characterized in that, The end face of the input end of the hydraulic pump is in contact with the end face of the output end of the motor, and the input shaft of the hydraulic pump is connected to the output shaft of the motor inside the hydraulic pump or the motor.

5. A hydraulic station according to claim 4, wherein The output shaft of the motor is entirely located inside the motor, and an axial connecting hole is formed at its connecting end. The input shaft of the hydraulic pump extends into the connecting hole and is connected thereto.

6. A hydraulic station according to claim 1, characterized in that, It further includes an oil return filter. The oil return filter is provided on the oil return pipeline and is fixed on the upper surface of the fuel tank.

7. A new type of electric-hydraulic multi-lobe grab, comprising a central cylinder body, a plurality of bucket lobes, a plurality of oil cylinders, and a hydraulic station for supplying oil to the plurality of oil cylinders. The upper side of the central cylinder body has a lifting outlet. The plurality of bucket lobes and the plurality of oil cylinders correspond one by one and are evenly arranged along the circumference of the central cylinder body. The bucket lobes are hinged to the lower part of the central cylinder body. The upper end of the oil cylinder is hinged to the upper part of the central cylinder body, and the lower end is connected to the corresponding bucket lobe. The hydraulic station is arranged inside the central cylinder body, and it is characterized in that, The central cylinder body includes an upper bracket, a lower bracket provided below the upper bracket, and a plurality of bracket connectors corresponding to the bucket flaps and the oil cylinders one by one. Both the upper bracket and the lower bracket are circular rings. The lifting outlet is formed on the upper bracket. The plurality of bracket connectors are evenly arranged around the upper bracket and the lower bracket. The upper and lower parts of the bracket connectors are respectively connected to the outer peripheral surfaces of the upper bracket and the lower bracket. The bucket flaps and the oil cylinders are hinged to the corresponding bracket connectors. The hydraulic station is a hydraulic station according to any one of claims 1-6, and its fuel tank is embedded in the inner hole of the lower bracket. The connecting edge of the fuel tank is detachably connected to the upper surface of the lower bracket by bolts.

8. A novel electric-hydraulic multi-lobe grab according to claim 7, characterized in that, The bracket connector includes two connecting plates arranged at intervals left and right. A connecting rib is provided between the two connecting plates. The upper and lower ends of the connecting plates are respectively connected to the outer peripheral surfaces of the upper bracket and the lower bracket. Hinge holes are provided at both the upper and lower ends of the connecting plates.

9. A novel electric-hydraulic multi-lobe grab according to claim 8, characterized in that, The connecting plate is composed of an upper section that slopes radially outward from top to bottom and a lower section that slopes radially inward from top to bottom.

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