A hydraulic clamping nozzle

Abstract

The utility model belongs to the technical field of hydraulic nozzles, and specifically relates to a hydraulic nozzle, comprising a base, characterized in that it also comprises a fixed clamping part and a movable clamping part arranged on the base, the fixed clamping part comprises a first base and a fixed nozzle arranged on the first base, the movable clamping part comprises a second base, a movable nozzle and a driving mechanism, the movable nozzle approaches or moves away from the fixed nozzle under the action of the driving mechanism; the driving mechanism comprises a driving cylinder, the driving cylinder comprises a cylinder body and a piston rod arranged in the cylinder body, the piston rod is fixedly connected to the second base, the cylinder body is slidably arranged in the second base, and the movable nozzle is connected to the closed end of the cylinder body. The movable nozzle approaches or moves away from the fixed nozzle under the action of the driving mechanism to achieve the clamping of the material; the driving mechanism is used to drive the movable nozzle to work, replacing the original connecting rod nozzle, saving space.

Description

Technical Field

[0001] The utility model relates to a hydraulic clamping nozzle and belongs to the technical field of hydraulic clamping nozzles. Background Art

[0002] Excavator is a commonly used construction machinery. The jaw is a kind of front-end attachment of the excavator. It can be used at the front end of equipment such as pile drivers, crushers, and tree movers. It is generally used to clamp sheet materials and drive the sheet materials into the ground with the help of an impactor. The common jaw structure on the market is generally a connecting rod jaw, which occupies a large space. In addition, the connecting rod structure has many connecting parts, which is prone to malfunction during use. Utility Model Content

[0003] The utility model provides a hydraulic clamping nozzle to improve the technical problems in the prior art that the clamping nozzle occupies a large space and is prone to failure during use.

[0004] The technical solution provided by the utility model is as follows:

[0005] A hydraulic clamping nozzle, comprising a base, a fixed clamping part and a movable clamping part arranged on the base, wherein the fixed clamping part comprises a first base and a fixed clamping nozzle arranged on the first base, and the movable clamping part comprises a second base, a movable clamping nozzle and a driving mechanism, wherein the movable clamping nozzle approaches or moves away from the fixed clamping nozzle under the action of the driving mechanism;

[0006] The driving mechanism comprises a driving oil cylinder, which comprises a cylinder body and a piston rod arranged in the cylinder body, the piston rod is fixedly connected to the second base body, the cylinder body is slidably arranged in the second base body, and the movable clamping nozzle is connected to the closed end of the cylinder body.

[0007] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects: the movable clamping part is composed of a second base body, a movable clamping nozzle and a driving mechanism, and the movable clamping nozzle is moved close to or away from the fixed clamping nozzle under the action of the driving mechanism to clamp the material; the movable clamping nozzle is driven by the driving mechanism to work, replacing the original connecting rod clamping nozzle, thereby saving space;

[0008] The piston rod is fixedly connected to the second base body, and the cylinder body is fixedly connected to the movable clamping nozzle. The piston rod remains stationary when the cylinder body drives the movable clamping nozzle to move. Compared with the method of driving the oil cylinder in which the cylinder body is stationary and the piston rod moves, since the pile driver is working, the object clamped by the clamping nozzle hits the ground under the action of impact force, the vibration of the object will be transmitted to the driving mechanism through the clamping nozzle. The method of stationary piston rod and moving cylinder body, due to the thickness of the cylinder body, is convenient for vibration isolation of the internal structure and protection of the seal, resulting in a reduction in the amplitude of vibration transmitted to the seal, preventing the seal from loosening, making the sealing effect better, avoiding oil leakage, and increasing the service life of the hydraulic clamping nozzle.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the second base body includes a cylinder body and a cylinder cover connected to the cylinder body, the cylinder body is slidably disposed in the cylinder body, and the piston rod is fixedly connected to the cylinder cover.

[0011] The beneficial effect of adopting the above further scheme is that the cylinder body and the cylinder cover are connected, the piston rod is connected to the cylinder cover and remains fixed, the cylinder body is slidably arranged in the cylinder body, and the piston rod is stationary and the cylinder body moves, so that the vibration amplitude transmitted to the seal during the vibration of the movable clamping nozzle will be reduced, thereby preventing the seal from loosening, making the sealing effect better, and increasing the service life of the hydraulic clamping nozzle.

[0012] Furthermore, a guide sleeve is provided at the open end of the cylinder body, and the guide sleeve is sleeved on the outer side of the piston rod.

[0013] The beneficial effect of adopting the above further scheme is that the guide sleeve with higher surface requirements is processed separately and then embedded into the second base body, which reduces the processing difficulty; the guide sleeve provides a guiding function for the cylinder body, reduces the friction between the piston and the cylinder body, reduces energy loss, and improves work efficiency; the guide sleeve provides a supporting function for the cylinder body to prevent the cylinder body from offsetting or shaking during movement; the guide sleeve has a sealing function to prevent hydraulic oil leakage.

[0014] Furthermore, at least one first sealing member is provided between the piston rod and the guide sleeve, and at least one second sealing member is provided between the piston rod and the cylinder body.

[0015] The beneficial effect of adopting the above further solution is to prevent the hydraulic oil in the oil chamber from leaking, improve the sealing performance, and reduce the risk of oil leakage.

[0016] Furthermore, a first oil chamber is provided between the piston rod and the bottom of the cylinder body, a second oil chamber is provided between the outer peripheral surface of the piston rod and the cylinder body, and a first oil path leading to the first oil chamber and a second oil path leading to the second oil chamber are provided on the piston rod.

[0017] The beneficial effect of adopting the above further scheme is that the hydraulic oil is pumped to the drive cylinder through the first oil circuit and the second oil circuit to perform work, and then flows back to the oil tank for recycling. The closed hydraulic circuit enables the system to continuously perform various functions and movements.

[0018] Furthermore, the cylinder locking valve is connected to the first oil circuit and the second oil circuit through the piston rod to control the direction of the hydraulic oil.

[0019] The beneficial effect of adopting the above further solution is that by manipulating the cylinder locking valve to control the direction of the hydraulic oil, the drive mechanism controls the movable clamping nozzle to approach or move away from the fixed clamping nozzle, thereby clamping the object.

[0020] Furthermore, the piston rod is connected to the cylinder cover via a fastening bolt; the movable clamping nozzle is connected to the cylinder body via a locking screw, and the fixed clamping nozzle is connected to the first base via a locking screw.

[0021] The beneficial effect of adopting the above further solution is that the parts can be easily replaced after being worn.

[0022] Furthermore, a dust plug is provided at the open end of the cylinder.

[0023] The beneficial effect of adopting the above further solution is to prevent dust particles from entering through the gap between the barrel and the cylinder body and scratching the barrel or the cylinder body, thereby improving the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the utility model;

[0025] Figure 2 It is a right view of the utility model;

[0026] Figure 3 For the utility model Figure 2 Cross-sectional view in the AA direction;

[0027] Figure 4 For the utility model Figure 2 The cross-sectional view of the CC direction rotated 90° to the left;

[0028] Figure 5 For the utility model Figure 2 The BB direction is rotated 90° to the left.

[0029] In the figure, 1, fixed clamping part; 101, first base; 102, fixed clamping nozzle; 2, movable clamping part; 3, second base; 301, cylinder; 302, cylinder cover; 4, movable clamping nozzle; 5, driving mechanism; 6, driving cylinder; 7, cylinder body; 8, piston rod; 9, guide sleeve; 10, locking screw; 11, fastening bolt; 12, base; 13, first sealing member; 14, second sealing member; 15, first oil circuit; 16, second oil circuit; 17, dust plug; 18, cylinder locking valve. DETAILED DESCRIPTION

[0030] The principles and features of the present invention are described below in conjunction with examples. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0031] like Figure 1-Figure 5 As shown, the utility model discloses a hydraulic clamping nozzle, including a base 12, and also including a fixed clamping part 1 and a movable clamping part 2 arranged on the base 12, the fixed clamping part 1 includes a first base 101 and a fixed clamping nozzle 102 arranged on the first base 101, the movable clamping part 2 includes a second base 3, a movable clamping nozzle 4 and a driving mechanism 5, the movable clamping nozzle 4 is close to or away from the fixed clamping nozzle 102 under the action of the driving mechanism 5; the driving mechanism 5 includes a driving cylinder 6, the driving cylinder 6 includes a cylinder body 7 and a piston rod 8 arranged in the cylinder body 7, the piston rod 8 and the second The base body 3 is fixedly connected, and the cylinder body 7 is slidably arranged in the second base body 3. Compared with the method of driving the oil cylinder in which the cylinder body is stationary and the piston rod moves, during the operation of the pile driver, the object clamped by the clamp is smashed to the ground under the action of the impact force, and the vibration of the object will be transmitted to the driving mechanism through the clamp. The method of stationary piston rod and moving cylinder body is adopted. Since the thickness of the cylinder body is relatively thick, it is convenient to isolate the internal structure from vibration and protect the seal, resulting in a reduction in the amplitude of vibration transmitted to the seal, preventing the seal from loosening and making the sealing effect better; the movable clamp 4 is connected to the closed end of the cylinder body 7 by a locking screw 10.

[0032] The second base body 3 includes a cylinder body 301 and a cylinder cover 302 connected to the cylinder body 301 by bolts. The cylinder body 7 is slidably disposed in the cylinder body 301, and the piston rod 8 is fixedly connected to the cylinder cover 302 by fastening bolts.

[0033] A guide sleeve 9 is further provided at the open end of the cylinder body 7 , and the guide sleeve 9 is sleeved on the outer side of the piston rod 8 .

[0034] At least one first seal 13 is provided between the piston rod 8 and the guide sleeve 9, and at least one second seal 14 is provided between the piston rod 8 and the cylinder body 7 to prevent leakage of hydraulic oil in the oil chamber and improve sealing performance.

[0035] A first oil chamber is provided between the inner end of the piston rod 8 and the bottom of the cylinder body 7, a second oil chamber is provided between the outer peripheral surface of the piston rod 8 and the cylinder body 7, and a first oil passage 15 leading to the first oil chamber and a second oil passage 16 leading to the second oil chamber are provided on the piston rod 8.

[0036] The cylinder locking valve 18 is connected with the first oil circuit 15 and the second oil circuit 16 through the piston rod 8. The direction of the hydraulic oil is controlled by operating the cylinder locking valve. When clamping is required, the hydraulic oil enters the first oil chamber through the first oil circuit 15, and the hydraulic oil in the second oil chamber flows back to the oil tank through the second oil circuit 16. When loosening is required, the hydraulic oil enters the second oil chamber through the second oil circuit 16, and the hydraulic oil in the first oil chamber flows back to the oil tank through the first oil circuit 15, so that the driving mechanism controls the movable clamping nozzle to approach or move away from the fixed clamping nozzle, thereby clamping the object.

[0037] The piston rod 8 is connected to the cylinder cover 302 via a fastening bolt 11 ; the movable clamping nozzle 4 is connected to the cylinder body 7 via a locking screw 10 , and the fixed clamping nozzle 102 is connected to the first base 101 via a locking screw 10 .

[0038] The open end of the barrel 301 is provided with a dust plug 17 to prevent dust particles from entering through the gap between the barrel and the cylinder body and scratching the barrel or the cylinder body, thereby improving the sealing effect.

[0039] During operation, the hydraulic oil is pumped to the drive cylinder through the first oil circuit and the second oil circuit by operating the cylinder locking valve. When clamping is required, the hydraulic oil enters the first oil chamber through the first oil circuit 15, and the hydraulic oil in the second oil chamber flows back to the oil tank through the second oil circuit 16. When loosening is required, the hydraulic oil enters the second oil chamber through the second oil circuit 16, and the hydraulic oil in the first oil chamber flows back to the oil tank through the first oil circuit 15, thereby realizing the forward and backward movement of the drive cylinder along the axis of the piston rod, and the movable clamping nozzle on the cylinder body moves with the cylinder body. When performing the clamping operation, first, the cylinder body drives the movable clamping nozzle to move toward the cylinder cover so that the workpiece enters the gap between the movable clamping nozzle and the fixed clamping nozzle, and then the cylinder body drives the movable clamping nozzle to move in the direction close to the fixed clamping nozzle, thereby clamping the fixed workpiece for subsequent operations.

[0040] 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 should be included in the protection scope of the present invention.

Claims

1. A hydraulic chuck, comprising a base (12), characterized in that: It also comprises a fixed clamping part (1) and a movable clamping part (2) arranged on the base (12), wherein the fixed clamping part (1) comprises a first base (101) and a fixed clamping nozzle (102) arranged on the first base (101), and the movable clamping part (2) comprises a second base (3), a movable clamping nozzle (4) and a driving mechanism (5), and the movable clamping nozzle (4) moves closer to or farther away from the fixed clamping nozzle (102) under the action of the driving mechanism (5); The driving mechanism (5) comprises a driving cylinder (6), the driving cylinder (6) comprises a cylinder body (7) and a piston rod (8) arranged in the cylinder body (7), the piston rod (8) is fixedly connected to the second base body (3), the cylinder body (7) is slidably arranged in the second base body (3), and the movable clamping nozzle (4) is connected to the closed end of the cylinder body (7).

2. The hydraulic chuck according to claim 1, characterized in that: The second base body (3) comprises a cylinder (301) and a cylinder cover (302) connected to the cylinder (301); the cylinder body (7) is slidably arranged in the cylinder (301); and the piston rod (8) is fixedly connected to the cylinder cover (302).

3. The hydraulic chuck according to claim 1 or 2, characterized in that: A guide sleeve (9) is also provided at the open end of the cylinder body (7), and the guide sleeve (9) is sleeved on the outer side of the piston rod (8).

4. The hydraulic chuck according to claim 3, characterized in that: At least one first sealing member (13) is provided between the piston rod (8) and the guide sleeve (9).

5. The hydraulic chuck according to claim 1, characterized in that: At least one second sealing member (14) is provided between the piston rod (8) and the cylinder body (7).

6. The hydraulic chuck according to claim 1, characterized in that: A first oil chamber is provided between the piston rod (8) and the bottom of the cylinder body (7), a second oil chamber is provided between the outer peripheral surface of the piston rod (8) and the cylinder body (7), and a first oil passage (15) leading to the first oil chamber and a second oil passage (16) leading to the second oil chamber are provided on the piston rod (8).

7. The hydraulic chuck according to claim 6, characterized in that: The cylinder locking valve (18) is connected to the first oil circuit (15) and the second oil circuit (16) through the piston rod (8) to control the direction of the hydraulic oil.

8. The hydraulic chuck according to claim 2, characterized in that: The piston rod (8) is connected to the cylinder cover (302) via a fastening bolt (11).

9. The hydraulic chuck according to claim 1, characterized in that: The movable clamping nozzle (4) is connected to the cylinder body (7) via a locking screw (10), and the fixed clamping nozzle (102) is connected to the first base body (101) via a locking screw (10).

10. The hydraulic chuck according to claim 2, characterized in that: The open end of the cylinder (301) is provided with a dust plug (17).

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