Hydraulic clamping nozzle

Abstract

The utility model discloses a hydraulic clamping nozzle, and relates to the field of hydraulic equipment. The clamping device comprises a clamping nozzle assembly, a clamping groove is formed in the bottom end of the clamping nozzle assembly, fixed clamping teeth are fixedly installed on one side of the clamping groove, a clamping nozzle oil cylinder installed in the clamping nozzle assembly in an embedded mode is arranged on the other side of the clamping groove, and movable clamping teeth are fixedly installed on a piston rod of the clamping nozzle oil cylinder. A pressure maintaining assembly is connected between the clamping nozzle oil cylinder and the oil way. The clamping nozzle oil cylinder pushes the movable clamping teeth fixed on the piston rod to move, so that the movable clamping teeth and the fixed clamping teeth are gradually closed to clamp a target object, compared with a traditional clamping nozzle, the oil cylinder directly pushes the clamping teeth to move, open and close, transmission connecting pieces such as connecting rods and pin shafts are omitted, the weight, cost and failure rate of products are reduced, application and popularization of the products are facilitated, and the production efficiency is improved. And the hydraulic lock is connected and mounted between the oil supply pipeline and the oil inlet of the clamping nozzle oil cylinder, so that hydraulic oil in the clamping nozzle oil cylinder is prevented from flowing back into the oil supply pipeline, and the oil pressure in the clamping nozzle oil cylinder is kept stable.

Description

Technical Field

[0001] The utility model belongs to the field of hydraulic equipment, and in particular relates to a hydraulic clamping nozzle. Background Art

[0002] The hydraulic chuck is a clamp driven by a hydraulic system. It controls the flow and pressure of the hydraulic oil to clamp and release the workpiece. It can also cooperate with lifting equipment to clamp and lift objects.

[0003] Chinese patent CN114473593B discloses a pneumatic hydraulic clamp with built-in pressurization locking and pressure-maintaining functions, including a base, a transmission box, a power assembly and a pressure arm. A mounting groove is provided on one side of the top of the base, a transmission box is fixedly arranged inside the mounting groove, a power assembly is fixedly arranged inside the transmission box, the pressure arm is arranged on the top of the base, a top block is fixedly arranged on the top of the power assembly, an adjustment sleeve is fixedly arranged on the left end of the pressure arm, a limit card is arranged on the left side wall of the adjustment sleeve, and an adjustment plate is movably arranged inside the adjustment sleeve, a pressure block is fixedly arranged on the bottom end of the adjustment plate, a protective pad is fixedly arranged on the bottom of the pressure block, a plurality of first adjustment holes are provided on the surface of the adjustment plate, a second adjustment hole is provided on the outer wall of the adjustment sleeve, a hydraulic oil connection nozzle is fixedly arranged on the front of the transmission box, a rotating frame is fixedly connected to the front and rear sides of the top of the base, and positioning feet are fixedly connected to the four corners of the bottom of the base.

[0004] Most of the hydraulic chucks in the prior art are the same as those in the above-mentioned patents, which drive the clamping parts to close and clamp through the transmission of transmission parts such as connecting rods and pins. The use of transmission parts not only increases the weight and cost of the product, but also the damage of transmission parts is also an important cause of product failure. Therefore, the use of transmission parts also increases the failure rate of the product. Utility Model Content

[0005] In view of the problems in the related technology, the utility model proposes a hydraulic clamping nozzle to overcome the above technical problems existing in the existing related technology.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a hydraulic clamping nozzle, comprising a clamping nozzle assembly, wherein a clamping groove is arranged at the bottom end of the clamping nozzle assembly, a fixed clamping tooth is fixedly installed on one side of the clamping groove, a clamping nozzle oil cylinder is arranged on the other side of the clamping groove and is embedded in the clamping nozzle assembly, and a movable clamping tooth is fixedly installed on the piston rod of the clamping nozzle oil cylinder;

[0008] A pressure-maintaining component is connected and installed between the clamping nozzle oil cylinder and the oil circuit.

[0009] Furthermore, the pressure maintaining assembly includes an electric proportional relief valve and a hydraulic lock, wherein the electric proportional relief valve is connected and installed on the large-cavity oil circuit of the nozzle clamping cylinder, and the hydraulic lock is connected and installed between the oil supply pipeline and the oil inlet of the nozzle clamping cylinder.

[0010] Furthermore, a hook located on one side of the clamping groove is fixedly mounted on the bottom end of the clamping nozzle assembly.

[0011] Furthermore, the end of the clamping nozzle oil cylinder is locked and fixedly connected to the clamping nozzle assembly by a plurality of cylinder fixing screws distributed in a circumference.

[0012] Furthermore, the dynamic clamping teeth are locked and fixedly connected to the piston rod of the clamping nozzle oil cylinder via a dynamic clamping teeth fixing screw, and the fixed clamping teeth are locked and fixedly connected to the clamping nozzle assembly via a fixed clamping teeth fixing screw.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the oil cylinder of the clamping nozzle pushes the movable clamping teeth fixed on the piston rod to move, so that the movable clamping teeth and the fixed clamping teeth gradually close together to clamp the target object. Compared with the traditional clamping nozzle, the oil cylinder directly pushes the clamping teeth to move open and close, eliminating the transmission connecting parts such as connecting rods and pins, reducing the weight, cost and failure rate of the product, and is conducive to the promotion and use of the product.

[0015] 2. In the utility model, a hydraulic lock is installed between the oil supply pipeline and the oil inlet of the clamping nozzle cylinder to prevent the hydraulic oil in the clamping nozzle cylinder from flowing back into the oil supply pipeline. It can not only keep the oil pressure in the clamping nozzle cylinder stable when the oil supply pipeline fails, but also prevent the pressure pulsation caused by vibration from causing the clamping teeth to be unreliable, thereby ensuring that the clamping teeth are always stably clamped.

[0016] 3. In the utility model, an electric proportional relief valve is installed in the large-cavity oil circuit of the clamping nozzle cylinder, and the clamping pressure of the clamping nozzle cylinder can be proportionally controlled by the electric proportional relief valve. In the initial stage of product operation, the friction coefficient of the clamping teeth is relatively large, and the friction force is also relatively large. As the clamping teeth wear, the friction coefficient gradually decreases. The electric proportional relief valve can be used to set a suitable clamping pressure according to the different working time stages of the clamping teeth, thereby reducing unnecessary wear and extending the service life of the clamping teeth. At the same time, the initial clamping pressure of the clamping teeth is set relatively low, which can extend the service life of the entire product and reduce the failure rate.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the utility model embodiments, the drawings required for describing the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, drawings can also be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is one of the structural schematic diagrams of the hydraulic clamping nozzle of the utility model;

[0020] Figure 2 This is the second structural schematic diagram of the hydraulic clamping nozzle of the utility model;

[0021] Figure 3 This is the third structural schematic diagram of the hydraulic clamping nozzle of the utility model;

[0022] Figure 4 For this utility model Figure 3 Sectional view of the AA surface.

[0023] In the figure: 1. Clamping jaw assembly; 2. Clamping jaw cylinder; 3. Moving clamping teeth; 4. Hook; 5. Fixed clamping teeth; 6. Cylinder fixing screws; 7. Electric proportional relief valve; 8. Fixed clamping teeth fixing screws; 9. Moving clamping teeth fixing screws; 10. Hydraulic lock. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the described embodiments are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] See also Figure 1-Figure 4 As shown, the utility model is a hydraulic clamping nozzle, comprising a clamping nozzle assembly 1, a clamping groove is arranged at the bottom end of the clamping nozzle assembly 1, a fixed clamping tooth 5 is fixedly installed on one side of the clamping groove, a clamping nozzle oil cylinder 2 is arranged on the other side of the clamping groove and is embedded and installed inside the clamping nozzle assembly 1, and a movable clamping tooth 3 is fixedly installed on the piston rod of the clamping nozzle oil cylinder 2; a pressure maintaining component is connected and installed between the clamping nozzle oil cylinder 2 and the oil circuit;

[0027] When the hydraulic clamping nozzle is working, hydraulic oil is transported to the clamping nozzle cylinder 2 through the oil supply pipeline, and the clamping nozzle cylinder 2 pushes the dynamic clamping teeth 3 fixed on the piston rod to move toward the fixed clamping teeth 5, so that the dynamic clamping teeth 3 and the fixed clamping teeth 5 gradually close together to clamp the target object. When the clamping teeth are stable, the pressure maintaining component can maintain the pressure of the clamping nozzle cylinder 2 to prevent hydraulic fluctuations in the clamping nozzle cylinder 2, so that the clamping teeth always maintain a stable clamping. Compared with the traditional clamping nozzle, the cylinder directly pushes the clamping teeth to move open and close, eliminating transmission connecting parts such as connecting rods and pins, reducing the weight, cost and failure rate of the product, and is conducive to the promotion and use of the product.

[0028] Specifically, the pressure-maintaining assembly includes an electric proportional relief valve 7 and a hydraulic lock 10. The electric proportional relief valve 7 is connected and installed in the large chamber (tightening side) oil circuit of the clamping nozzle cylinder 2. The hydraulic lock 10 is connected and installed between the oil supply pipeline and the oil inlet of the clamping nozzle cylinder 2.

[0029] By installing a hydraulic lock 10 between the oil supply pipeline and the oil inlet of the clamping nozzle cylinder 2, the hydraulic oil in the clamping nozzle cylinder 2 can be prevented from flowing back into the oil supply pipeline. Not only can the oil pressure in the clamping nozzle cylinder 2 be kept stable when the oil supply pipeline fails, but also the pressure pulsation caused by vibration can be prevented, which causes the clamping teeth to be clamped unreliably, thereby ensuring that the clamping teeth are always clamped stably; and the clamping pressure of the clamping nozzle cylinder 2 can be proportionally controlled by the electric proportional relief valve 7. In the initial stage of product operation, the friction coefficient of the clamping teeth is large, and the friction force is also relatively large. As the clamping teeth wear, the friction coefficient gradually decreases. The electric proportional relief valve 7 can be used to set a suitable clamping pressure according to the different working time stages of the clamping teeth, thereby reducing unnecessary wear and extending the service life of the clamping teeth. At the same time, the initial clamping pressure of the clamping teeth is set relatively low, which can extend the service life of the entire product and reduce the failure rate.

[0030] Specifically, a hook 4 located on one side of the clamping groove is fixedly installed at the bottom end of the clamping nozzle assembly 1. When the hydraulic clamping nozzle is used to clamp and lift objects, the objects can be suspended on the hook 4 to assist in fixing the objects and prevent the objects from falling when the clamping teeth are loosened, thereby improving the safety when lifting objects.

[0031] Specifically, the end of the nozzle cylinder 2 is locked and fixed to the nozzle assembly 1 by a plurality of cylinder fixing screws 6 distributed in a circle, the dynamic clamping tooth 3 is locked and fixed to the piston rod of the nozzle cylinder 2 by a dynamic clamping tooth fixing screw 9, the fixed clamping tooth 5 is locked and fixed to the nozzle assembly 1 by a fixed clamping tooth fixing screw 8, and the nozzle cylinder 2, the dynamic clamping tooth 3 and the fixed clamping tooth 5 are all detachably connected by screws, thereby facilitating regular disassembly and maintenance of the hydraulic nozzle.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model.

Claims

1. A hydraulic clamping nozzle, comprising a clamping nozzle assembly (1), characterized in that: The bottom end of the clamping nozzle assembly (1) is provided with a clamping groove, a fixed clamping tooth (5) is fixedly installed on one side of the clamping groove, and a clamping nozzle oil cylinder (2) is provided on the other side of the clamping nozzle assembly (1) and is embedded in the clamping nozzle assembly (1), and a dynamic clamping tooth (3) is fixedly installed on the piston rod of the clamping nozzle oil cylinder (2); A pressure-maintaining component is connected and installed between the nozzle oil cylinder (2) and the oil circuit.

2. A hydraulic chuck according to claim 1, characterized in that: The pressure-maintaining assembly comprises an electric proportional relief valve (7) and a hydraulic lock (10); the electric proportional relief valve (7) is connected and installed on the large-cavity oil circuit of the nozzle clamping cylinder (2); and the hydraulic lock (10) is connected and installed between the oil supply pipeline and the oil inlet of the nozzle clamping cylinder (2).

3. A hydraulic chuck according to claim 1, characterized in that: A hook (4) located on one side of the clamping groove is fixedly mounted on the bottom end of the clamping nozzle assembly (1).

4. A hydraulic chuck according to claim 1, characterized in that: The end of the clamping nozzle oil cylinder (2) is locked and fixedly connected to the clamping nozzle assembly (1) via a plurality of cylinder fixing screws (6) distributed in a circumference.

5. A hydraulic chuck according to claim 1, characterized in that: The movable clamping teeth (3) are locked and fixedly connected to the piston rod of the clamping nozzle oil cylinder (2) via a movable clamping teeth fixing screw (9), and the fixed clamping teeth (5) are locked and fixedly connected to the clamping nozzle assembly (1) via a fixed clamping teeth fixing screw (8).

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