Hydraulic tool with self-locking function

Abstract

The hydraulic tool with the self-locking function comprises a cylinder body, a piston rod, a connecting ring, a rotating seat, a clamping block and a spring support, a clamping edge is clamped through the clamping block, so that the piston rod is prevented from descending, the clamping block can rotate through the rotating seat, meanwhile, the clamping block can be prevented from rotating downwards, and the self-locking function is achieved. The clamping blocks can be taken away from the clamping edges through the connecting rings, so that the piston rod can normally descend, the clamping blocks can be reset through the reset springs, and therefore the clamping blocks can be accurately clamped into the grooves between the clamping edges; the rotating seat can be conveniently mounted on the mounting ring, the rotating seat can be conveniently rotated below the pressurized clamping edges through the balls, the connecting ring can be conveniently positioned and mounted through the positioning grooves and the positioning blocks, meanwhile, the connecting ring is prevented from falling off when rotating on the mounting ring, and the base plates in threaded connection are convenient to replace, so that the base plates of different models and sizes can be correspondingly selected.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic tooling, in particular to a hydraulic tooling with a self-locking function. Background Art

[0002] Mechanical tooling refers to process equipment, which is a general term for various tools used in the manufacturing process, including cutting tools, fixtures, molds, measuring tools, inspection tools, auxiliary tools, pliers tools, work station equipment, etc. Tooling is divided into special tooling, general tooling, and standard tooling. Hydraulic supports are also mechanical tooling, which are used to cope with operations such as lifting or pressurizing when making items.

[0003] In traditional hydraulic supports, in order to prevent the piston rod from "going soft", a coil spring is usually used to elastically clamp the piston rod surface. Since the force is relatively concentrated, the piston rod surface will be damaged, and the piston rod cannot be used for a long time, which reduces the life of the piston rod. There are certain limitations, so a hydraulic tooling with a self-locking function is needed to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the prior art, the utility model discloses a hydraulic tool with a self-locking function. The technical solution adopted is that it includes a cylinder body, a piston rod, a connecting ring, a rotating seat, a clamping block and a spring frame. The lower end of the piston rod is provided with a piston, and the piston rod and the piston are arranged inside the cylinder body. The upper end of the piston rod extends out from the upper opening of the cylinder body. The lower end of the cylinder body is provided with a liquid inlet, and the piston separates the piston rod and the liquid inlet. A mounting ring is provided at the top of the cylinder body; clamping edges are evenly provided on the left side surface of the piston rod from top to bottom; the connecting ring is movably sleeved on the mounting ring; the rotating seat is fixedly installed on the left end of the connecting ring; the clamping block The left end of the block is rotatably mounted on the rotating seat, and the right end of the block can be clamped in the groove between the clamping edges, and the block is clamped by the rotating seat in the downward rotation direction; the spring frame is an inverted U-shaped structure, and a return spring is arranged inside the spring frame. The lower end of the return spring is pressed on the block, and the clamping edge is clamped by the block to prevent the piston rod from descending. The rotating seat allows the block to rotate while preventing the block from rotating downward, thereby ensuring that the piston rod can operate in one direction upward, and the block can be taken away from the clamping edge by the connecting ring, so that the piston rod can descend normally, and the block can be reset by the return spring, so that the block can be accurately clamped in the groove between each clamping edge.

[0005] As an optimal technical solution for a hydraulic tooling with a self-locking function of the utility model, the connecting ring comprises a right half ring and a left half ring, the right half ring and the left half ring are connected by bolts, and the rotating seat is fixedly arranged at the left end of the left half ring. The separate structure of the right half ring and the left half ring facilitates the installation of the rotating seat on the mounting ring.

[0006] As a preferred technical solution of a hydraulic tooling with a self-locking function of the utility model, an internal thread opening is provided on the upper surface of the piston rod.

[0007] As a preferred technical solution of the hydraulic tooling with a self-locking function of the utility model, a ball is arranged on the upper surface of the clamping block, which facilitates the rotation under the pressurized clamping edge.

[0008] As an optimal technical solution for a hydraulic tooling with a self-locking function of the utility model, a positioning groove is provided on the side surface of the mounting ring, and positioning blocks matching the positioning groove are provided on the inner sides of the right half ring and the left half ring. The positioning groove and the positioning block facilitate the positioning and installation of the connecting ring, and at the same time prevent the connecting ring from falling off when rotating on the mounting ring.

[0009] As an optimal technical solution for a hydraulic tooling with a self-locking function of the utility model, it also includes a pad, the lower end of which is connected to the internal threaded port via a threaded column. The pad connected by threads is easy to replace, so that pads of different models and sizes can be selected accordingly.

[0010] The beneficial effects of the utility model are as follows: the utility model uses a clamping block to clamp the clamping edge, thereby preventing the piston rod from descending; the clamping block can be rotated by the rotating seat while preventing the clamping block from rotating downward, thereby ensuring that the piston rod can operate in one direction upward; the clamping block can be taken away from the clamping edge by the connecting ring, thereby allowing the piston rod to descend normally; the clamping block can be reset by the reset spring, thereby allowing the clamping block to be accurately clamped into the groove between each clamping edge; the right half ring and the left half ring are separated, so that the rotating seat can be easily installed on the mounting ring; the ball bearing can facilitate rotation under the pressurized clamping edge; the positioning groove and the positioning block can facilitate positioning and installation of the connecting ring, while preventing the connecting ring from falling off when rotating on the mounting ring; the threaded pad can be easily replaced, so that pads of different models and sizes can be selected accordingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the cylinder structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the piston rod structure of the utility model;

[0014] Figure 4 This is a schematic diagram of the connecting ring structure of the utility model;

[0015] Figure 5 It is a schematic diagram of the left structure of the connecting ring of the utility model.

[0016] In the figure: 1-cylinder body, 101-liquid inlet, 102-mounting ring, 103-positioning groove, 2-piston rod, 201-piston, 202-card edge, 203-internal thread mouth, 3-connecting ring, 31-right half ring, 32-left half ring, 301-positioning block, 4-rotating seat, 5-card block, 501-ball, 6-spring frame, 601-reset spring, 7-pad. DETAILED DESCRIPTION

[0017] Example 1

[0018] like Figures 1 to 5As shown, the utility model discloses a hydraulic tool with a self-locking function, and the technical scheme adopted is that it includes a cylinder body 1, a piston rod 2, a connecting ring 3, a rotating seat 4, a clamping block 5 and a spring frame 6. The lower end of the piston rod 2 is provided with a piston 201, and the piston rod 2 and the piston 201 are arranged inside the cylinder body 1. The upper end of the piston rod 2 extends out from the upper opening of the cylinder body 1. The lower end of the cylinder body 1 is provided with a liquid inlet 101, and the piston 201 separates the piston rod 2 and the liquid inlet 101. The top of the cylinder body 1 is provided with a mounting ring 102; the left side surface of the piston rod 2 is evenly provided with clamping edges 202 from top to bottom, and the upper end of the piston rod 2 An internal thread opening 203 is provided on the surface, and a pad 7 is also included. The lower end of the pad 7 is connected to the internal thread opening 203 through a threaded column. The pad 7 connected by thread is easy to replace, so that pads 7 of different models and sizes can be selected accordingly; the connecting ring 3 is movably sleeved on the mounting ring 102, and the connecting ring 3 includes a right half ring 31 and a left half ring 32. The right half ring 31 and the left half ring 32 are connected by bolts, and the rotating seat 4 is fixedly arranged at the left end of the left half ring 32. The separate structure of the right half ring 31 and the left half ring 32 facilitates the installation of the rotating seat 4 on the mounting ring 102. A screw thread is provided on the side of the mounting ring 102. There is a positioning groove 103, and positioning blocks 301 matching the positioning groove 103 are arranged on the inner side surfaces of the right half ring 31 and the left half ring 32. The positioning groove 103 and the positioning block 301 facilitate the positioning and installation of the connecting ring 3, and prevent the connecting ring 3 from falling off when rotating on the mounting ring 102; the rotating seat 4 is fixedly installed on the left end of the connecting ring 3; the left end of the clamping block 5 is rotatably installed on the rotating seat 4, and the right end of the clamping block 5 can be clamped in the groove between the clamping edges 202. The clamping block 5 is clamped by the rotating seat 4 in the downward rotation direction. A ball 501 is arranged on the upper surface of the clamping block 5, which facilitates the clamping edge 202 under the pressurized state through the ball 501. The spring frame 6 is an inverted U-shaped structure, and a return spring 601 is arranged inside the spring frame 6. The lower end of the return spring 601 is pressed on the block 5, and the block 5 is used to clamp the edge 202, so as to prevent the piston rod 2 from descending. The block 5 can be rotated by the rotating seat 4 while preventing the block 5 from rotating downward, so as to ensure that the piston rod 2 can operate in one direction upward, and the block 5 can be taken away from the edge 202 by the connecting ring 3, so that the piston rod 2 can descend normally, and the block 5 can be reset by the return spring 601, so that the block 5 can be accurately clamped into the groove between each edge 202.

[0019] The working principle of the utility model is as follows: the hydraulic tooling is installed at a suitable position, the liquid inlet 101 is connected to the external liquid supply device, the piston rod 2 is operated and extends from the cylinder body 1, the clamping edge 202 pushes the clamping block 5 to rotate upward, and the reset spring 601 pushes the clamping block 5 to reset, so that it is stuck in the groove between the clamping edges 202 to prevent the piston rod 2 from falling. When the piston rod 2 needs to drop, the connecting ring 3 is grasped and rotated to make the clamping block 5 leave the groove between the clamping edges 202. At this time, the hydraulic fluid inside the cylinder body 1 is discharged and the piston rod 2 can drop normally.

[0020] The circuit connection involved in the utility model is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, and it belongs to the widely used existing technology.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified,

[0022] "Plurality" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0024] Components not described in detail herein are prior art.

[0025] Although the specific embodiments of the present invention are described in detail above, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention, and modifications or deformations without creative labor are still within the scope of protection of the present invention.

Claims

1. A hydraulic tool with a self-locking function, comprising a cylinder body (1), a piston rod (2), a connecting ring (3), a rotating seat (4), a clamping block (5) and a spring frame (6), wherein a piston (201) is arranged at the lower end of the piston rod (2), the piston rod (2) and the piston (201) are arranged inside the cylinder body (1), and the upper end of the piston rod (2) protrudes from the upper opening of the cylinder body (1), characterized in that: The lower end of the cylinder body (1) is provided with a liquid inlet (101), the piston (201) separates the piston rod (2) and the liquid inlet (101), and the top end of the cylinder body (1) is provided with a mounting ring (102); the left side surface of the piston rod (2) is evenly provided with clamping edges (202) from top to bottom; the connecting ring (3) is movably sleeved on the mounting ring (102); the rotating seat (4) is fixedly mounted on the left end of the connecting ring (3); the left end of the clamping block (5) is rotatably mounted on the rotating seat (4), the right end of the clamping block (5) can be clamped in the groove between the clamping edges (202), and the clamping block (5) is clamped by the rotating seat (4) in the downward rotation direction; the spring frame (6) is an inverted U-shaped structure, and a return spring (601) is arranged inside the spring frame (6), and the lower end of the return spring (601) is pressed on the clamping block (5).

2. The hydraulic tooling with self-locking function according to claim 1, characterized in that: The connecting ring (3) comprises a right half ring (31) and a left half ring (32), the right half ring (31) and the left half ring (32) are connected by bolts, and the rotating seat (4) is fixedly arranged at the left end of the left half ring (32).

3. The hydraulic tooling with self-locking function according to claim 1, characterized in that: An internal thread opening (203) is provided on the upper surface of the piston rod (2).

4. The hydraulic tooling with self-locking function according to claim 2, characterized in that: A rolling ball (501) is arranged on the upper surface of the clamping block (5).

5. The hydraulic tooling with self-locking function according to claim 2, characterized in that: A positioning groove (103) is provided on the side surface of the mounting ring (102), and positioning blocks (301) matching with the positioning groove (103) are provided on the inner side surfaces of the right half ring (31) and the left half ring (32).

6. The hydraulic tooling with self-locking function according to claim 3, characterized in that: It also comprises a backing plate (7), the lower end of which is connected to the internal threaded port (203) via a threaded column.

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