Integrated hydraulic chuck

Abstract

The utility model belongs to the technical field of clamps, and particularly relates to an integrated hydraulic chuck. The chuck comprises a chuck base body, one end of the chuck base body is connected with a rear cover cylinder body, a piston rod is arranged in an inner cavity of the rear cover cylinder body and penetrates through the whole rear cover cylinder body, a first oil port is formed in the side wall of the rear cover cylinder body, a second oil port is formed in the lower end of the rear cover cylinder body, and the first oil port is communicated with a first inner cavity of the rear cover cylinder body. The second oil port is communicated with a second inner cavity of the rear cover cylinder body, the end, away from the rear cover cylinder body, of the piston rod is connected with a dynamic clamping part, and the chuck base body end is provided with a static clamping part corresponding to the dynamic clamping part. According to the integrated hydraulic chuck, the chuck base body has the function of a hydraulic cylinder and the function of a clamping part, the installation space is saved, the rear cover and the cylinder body are integrated, multiple sealing structures are combined, the oil leakage risk is reduced, the piston and the piston rod are integrated, the coaxiality is guaranteed, the service life of an oil cylinder is prolonged, and the use and maintenance cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of clamps, and in particular relates to an integrated hydraulic chuck. Background Art

[0002] Excavators are equipped with various accessories to achieve different uses. The chuck is a type of excavator accessory, which is generally used to clamp water retaining plates, also called sheet piles. The water retaining plates are driven into the ground with the help of an impactor. Several water retaining plates will surround the construction site that needs to be excavated to prevent the surrounding groundwater from entering the construction area.

[0003] Existing chucks are often connecting rod type chucks, which take up a large space when stored, and have many connecting parts and failure points due to the existence of the connecting rod. Utility Model Content

[0004] In view of the above shortcomings of the prior art, the purpose of the present utility model is to provide an integrated hydraulic chuck.

[0005] To achieve the above objectives, the technical solutions adopted are:

[0006] An integrated hydraulic chuck comprises a chuck base, one end of the chuck base is connected to a rear cover cylinder body, an inner cavity of the rear cover cylinder body is provided with a piston rod, the piston rod passes through the entire rear cover cylinder body, a side wall of the rear cover cylinder body is provided with a first oil port, a lower end of the rear cover cylinder body is provided with a second oil port, the first oil port is communicated with the first inner cavity of the rear cover cylinder body, the second oil port is communicated with the second inner cavity of the rear cover cylinder body, a dynamic clamping part is connected to the end of the piston rod away from the rear cover cylinder body, and a static clamping part corresponding to the dynamic clamping part is provided on the chuck base.

[0007] The integrated hydraulic chuck of the utility model has a simple structure. The chuck base has the function of both the hydraulic cylinder and the clamping part, which saves installation space. The rear cover is integrated with the cylinder body, and multiple sealing structures are combined to reduce the risk of oil leakage. The piston and the piston rod are integrated to ensure coaxiality, increase the service life of the cylinder, and save use and maintenance costs.

[0008] On the basis of the above technical solution, the present invention can also make the following improvements to the above technical solution:

[0009] Furthermore, a guide sleeve is fixed in the chuck base, and the piston rod is arranged in the guide sleeve.

[0010] The beneficial effects of adopting the above-mentioned further technical scheme are: the guide sleeve with higher surface requirements is processed separately and then embedded in the chuck base, thereby reducing the processing difficulty of the base; the conventional guide in the prior art has a guide groove on the steel body and a cloth-reinforced phenolic guide ring embedded, and the effective guide length is short; in the utility model, tin bronze material is used, and the contact part between the guide sleeve and the piston rod is long, which increases the effective guide length and enhances the guiding performance.

[0011] Furthermore, the first oil port and the second oil port are connected to the chuck base through oil pipes.

[0012] Furthermore, a piston bidirectional sealing ring is provided at the position where the piston rod contacts the inner wall of the rear cover cylinder body.

[0013] The beneficial effect of adopting the above further technical solution is: preventing the liquid oil in the inner cavity of the rear cover cylinder from entering the piston rod, reducing the risk of oil leakage, and extending the service life of the piston rod.

[0014] Furthermore, a step seal is provided on the guide sleeve, and the step seal is located between the contact surface of the guide sleeve and the piston rod.

[0015] The beneficial effects of adopting the above further technical solution are: preventing the oil on the surface of the piston rod from entering the guide sleeve, reducing the risk of oil leakage, and extending the service life of the guide sleeve.

[0016] Furthermore, an O-ring is provided on the guide sleeve, and the O-ring is located on the contact surface between the guide sleeve and the inner wall of the rear cover cylinder body, and on the contact surface between the guide sleeve and the chuck base.

[0017] The beneficial effect of adopting the above further technical solution is: preventing the oil in the inner cavity of the rear cover cylinder from entering the guide sleeve, reducing the risk of oil leakage, and extending the service life of the guide sleeve.

[0018] Furthermore, the guide sleeve is provided with a dust ring near the clamping portion end.

[0019] The beneficial effect of adopting the above further technical solution is: preventing dust particles from entering through the gap between the guide sleeve and the piston rod and scratching the piston rod or the guide sleeve, thereby improving the sealing effect.

[0020] Furthermore, the dynamic clamping part is connected to the piston rod via screws, and the static clamping part is connected to the chuck base via screws.

[0021] The beneficial effect of adopting the above further technical solution is that after the dynamic clamping part or the static clamping part is worn, it can be easily replaced.

[0022] Furthermore, an oil cup is provided on the rear cover cylinder body, and a pipeline of the oil cup extends between the piston rod and the guide sleeve.

[0023] The beneficial effect of adopting the above further technical solution is that the oil cup plays a role in lubricating the piston rod and the guide sleeve, thereby protecting the normal operation of the equipment.

[0024] Furthermore, the surfaces of the dynamic clamping part and the static clamping part are provided with a serrated anti-slip structure;

[0025] The beneficial effect of adopting the above further technical solution is that the clamped part can be fixed more firmly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional schematic diagram of the integrated hydraulic chuck of the utility model;

[0027] Figure 2 It is a left view of the integrated hydraulic chuck of the utility model;

[0028] Figure 3 For along Figure 2 Cross-sectional view in the EE direction;

[0029] Figure 4 For along Figure 2 A cross-sectional view in the FF direction;

[0030] Figure numerals: 1, chuck base; 2, rear cover cylinder; 3, piston rod; 401, first oil port; 402, second oil port; 5, dynamic clamping part; 6, static clamping part; 7, guide sleeve; 8, oil pipe; 9, piston two-way sealing ring; 10, step seal; 11, O-ring; 12, dust ring; 13, screw; 14, oil cup. DETAILED DESCRIPTION

[0031] The present invention is described below in conjunction with examples, which are only used to explain the present invention and are not used to limit the scope of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element 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 present invention.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] like Figures 1 to 4 As shown, the utility model discloses an integrated hydraulic chuck, including a chuck base 1, one end of the chuck base 1 is connected to a rear cover cylinder body 2, the inner cavity of the rear cover cylinder body 2 is provided with a piston rod 3, the piston rod 3 runs through the entire rear cover cylinder body 2, the side wall of the rear cover cylinder body 2 is provided with a first oil port 401, the lower end of the rear cover cylinder body is provided with a second oil port 402, the first oil port is connected to the first inner cavity of the rear cover cylinder body, the second oil port is connected to the second inner cavity of the rear cover cylinder body, the end of the piston rod away from the rear cover cylinder body is connected to a dynamic clamping part 5, and the chuck base end is provided with a static clamping part 6 corresponding to the dynamic clamping part.

[0035] In this embodiment, a guide sleeve 7 is fixed in the chuck base 1, and the piston rod is arranged in the guide sleeve 7. In the conventional guide in the prior art, a guide groove is opened on the steel body, and a cloth-reinforced phenolic guide ring is embedded, and the effective guide length is short; in this embodiment, tin bronze material is used, and the contact part between the guide sleeve and the piston rod is long, which increases the effective guide length and enhances the guiding performance.

[0036] In this embodiment, the first oil port 401 and the second oil port 402 are connected to the chuck base through the oil pipe 8 .

[0037] Furthermore, a piston bidirectional sealing ring 9 is provided at the position where the piston rod contacts the inner wall of the rear cover cylinder body, which can effectively prevent oil leakage.

[0038] In this embodiment, specifically, a step seal 10 is provided on the guide sleeve. The step seal is located between the contact surface of the guide sleeve and the piston rod, and can further prevent oil leakage.

[0039] In this embodiment, specifically, an O-ring 11 is provided on the guide sleeve, and the O-ring is located on the contact surface between the guide sleeve and the inner wall of the rear cover cylinder body, and on the contact surface between the guide sleeve and the chuck base. The O-ring can further reduce the risk of oil leakage on the basis of the aforementioned sealing structure.

[0040] In an optional embodiment, the guide sleeve is further provided with a dustproof ring 12 near the clamping portion end to prevent dust particles from entering through the gap between the guide sleeve and the piston rod and scratching the piston rod or the guide sleeve, thereby improving the sealing effect.

[0041] Optionally, the dynamic clamping part is connected to the piston rod via a screw 13, and the static clamping part is connected to the chuck base via a screw, so that the dynamic clamping part or the static clamping part can be easily replaced after being worn.

[0042] In this embodiment, specifically, an oil cup 14 is provided on the rear cover cylinder body, and a pipeline of the oil cup 14 extends between the piston rod and the guide sleeve to play a role in lubricating the guide sleeve and the piston rod.

[0043] Dynamic clamping part and static clamping part In this embodiment, specifically, the surfaces of the dynamic clamping part and the static clamping part are provided with serrated anti-slip structures, and the dynamic clamping part and the static clamping part are arranged opposite to each other, so as to more firmly fix the clamped object.

[0044] During operation, the oil in the oil pipe is controlled to flow in and out of the inner cavity of the rear cover cylinder from the first oil port and the second oil port, and the piston rod is operated to move forward and backward along the axis of the piston rod, and the dynamic clamping part on the piston rod moves with the piston rod. When performing the clamping operation, first, the piston rod drives the dynamic clamping part to move toward the rear cover cylinder so that the workpiece enters the gap between the dynamic clamping part and the static clamping part, and then the piston rod drives the dynamic clamping part to move away from the rear cover cylinder and close to the static clamping part, thereby clamping and fixing the workpiece for subsequent processing operations.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An integrated hydraulic chuck, comprising a chuck base, characterized in that: One end of the chuck base is connected to a rear cover cylinder body, an inner cavity of the rear cover cylinder body is provided with a piston rod, the piston rod passes through the entire rear cover cylinder body, a side wall of the rear cover cylinder body is provided with a first oil port, a lower end of the rear cover cylinder body is provided with a second oil port, the first oil port is communicated with the first inner cavity of the rear cover cylinder body, the second oil port is communicated with the second inner cavity of the rear cover cylinder body, the end of the piston rod away from the rear cover cylinder body is connected with a dynamic clamping part, and the end of the chuck base is provided with a static clamping part corresponding to the dynamic clamping part.

2. The integrated hydraulic chuck according to claim 1, characterized in that: A guide sleeve is fixed in the chuck base, and the piston rod is arranged in the guide sleeve.

3. The integrated hydraulic chuck according to claim 1, characterized in that: The first oil port and the second oil port are connected to the chuck base through oil pipes.

4. The integrated hydraulic chuck according to claim 1, characterized in that: A piston bidirectional sealing ring is arranged at the position where the piston rod contacts the inner wall of the rear cover cylinder body.

5. The integrated hydraulic chuck according to claim 2, characterized in that: The guide sleeve is provided with a step seal, and the step seal is located between the contact surface of the guide sleeve and the piston rod.

6. The integrated hydraulic chuck according to claim 5, characterized in that: The guide sleeve is provided with an O-ring, and the O-ring is located on the contact surface between the guide sleeve and the inner wall of the rear cover cylinder body, and on the contact surface between the guide sleeve and the chuck base.

7. The integrated hydraulic chuck according to claim 2, characterized in that: The guide sleeve is also provided with a dustproof ring near the clamping portion end.

8. The integrated hydraulic chuck according to claim 1, characterized in that: The dynamic clamping part is connected to the piston rod through screws, and the static clamping part is connected to the clamp base through screws.

9. The integrated hydraulic chuck according to claim 2, characterized in that: An oil cup is arranged on the rear cover cylinder body, and a pipeline of the oil cup extends between the piston rod and the guide sleeve.

10. The integrated hydraulic chuck according to claim 1, characterized in that: The surfaces of the dynamic clamping part and the static clamping part are provided with sawtooth anti-slip structures.

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