Quick-change hydraulic tool

Abstract

The utility model belongs to the technical field of hydraulic tools, and particularly relates to a quick-change hydraulic tool, which comprises a driving main body, a piston cavity is arranged at the end part of the driving main body, and a piston piece which is driven by a driving source to slide is arranged in the piston cavity; the functional main body is provided with a tool head used for operation, the tool head is connected with a functional driving part which is used for stretching into the piston cavity and abutting against the piston part, and the piston part drives the tool head to operate through the functional driving part; according to the hydraulic tool, the quick release assembly is arranged between the driving main body and the functional main body, the quick release connection mode is stable and reliable, disassembly and replacement are convenient, the hydraulic tool obtains different functions by replacing different functional main bodies, and different use requirements are met.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic tool technology, and specifically refers to a quick-change hydraulic tool. Background Technology

[0002] Hydraulic tool heads are an important component of hydraulic tools, used to perform specific tasks such as crimping, shearing, and drilling. Most existing hydraulic tool heads are directly fixed to the hydraulic tool using nuts or bolts, making them impossible to disassemble and replace when the tool is not in use. If users want to perform different tasks, they need to use various hydraulic tools with different tool heads to achieve operations such as crimping, shearing, and drilling. Having multiple hydraulic tools is inconvenient to carry and results in high purchase costs. Summary of the Invention

[0003] The purpose of this invention is to provide a quick-change hydraulic tool that allows for rapid replacement of its hydraulic tool head to complete various different tasks.

[0004] The purpose of this utility model is achieved as follows:

[0005] A quick-change hydraulic tool, comprising,

[0006] A driving body, with a piston chamber at its end, contains a piston component that slides within the piston chamber, driven by the driving source; and

[0007] The main body is equipped with a tool head for operation. The tool head is connected to a functional drive unit for extending into the piston chamber and abutting against the piston. The piston drives the tool head to operate through the functional drive unit.

[0008] A quick-release assembly is provided between the drive body and the functional body, which includes:

[0009] The snap-fit ​​sleeve is provided on the functional body. The inner wall of the snap-fit ​​sleeve is provided with a plurality of first limiting protrusions. The plurality of first limiting protrusions are distributed around each other, and an installation space is formed between adjacent first limiting protrusions.

[0010] A locking seat is provided on the drive body, and a second limiting protrusion is provided on the upper outer edge of the locking seat;

[0011] The second limiting boss can be inserted into the locking sleeve through the installation space and rotated to cooperate with the locking sleeve to lock the second limiting boss onto the first limiting boss, thereby realizing the connection of the functional body on the driving body.

[0012] Furthermore, the locking sleeve / locking seat is provided with an elastic limiting member, and the locking seat / locking sleeve is provided with a limiting groove that abuts against the elastic limiting member;

[0013] When the second limiting boss engages with the first limiting boss, the elastic limiting member is located within the limiting groove.

[0014] Furthermore, the elastic limiting member includes a top bead, which is connected to an elastic element that gives it an outward tendency to move.

[0015] Furthermore, the second limiting boss is provided with a limiting pin arranged along the axial direction of the driving body. The limiting pin is used to restrict the relative movement between the first limiting boss and the second limiting boss.

[0016] Furthermore, the second limiting protrusion is provided with a mounting hole, and the limiting pin is fixedly connected in the mounting hole.

[0017] Furthermore, the driving body includes a hydraulic cylinder and a connecting sleeve fixed to one end of the hydraulic cylinder, and the connecting sleeve is provided with the engagement seat.

[0018] Furthermore, the card holder is hollow, and the functional drive component is located inside the card sleeve and is opposite to the center of the card holder.

[0019] The outstanding and beneficial technical effects of this utility model compared to the prior art are:

[0020] The quick-release connection method described in this patent is stable and reliable, and easy to disassemble and replace. By replacing different functional main bodies, the hydraulic tool in this patent can obtain different functions to meet different usage needs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a cross-sectional schematic diagram of the present invention.

[0023] Figure 3 This is a partial breakdown diagram of the driving unit.

[0024] Figure 4 This is a structural diagram of the main functional component.

[0025] Figure 5 This is a cross-sectional schematic diagram of the elastic limiting component in the drive body.

[0026] Figure 6 This is a structural diagram of another functional subject.

[0027] The meaning of the labels in the diagram:

[0028] 1. Drive body; 11. Piston chamber; 12. Piston component; 13. Hydraulic cylinder; 14. Connecting sleeve;

[0029] 2. Main functional component; 21. Tool head; 22. Functional driving component;

[0030] 3. Snap-fit ​​sleeve; 31. First limiting boss; 32. Limiting groove;

[0031] 4. Card holder; 41. Second limiting boss; 411. Limiting pin; 412. Mounting hole; 42. Elastic limiting element; 421. Top ball; 422. Elastic element. Detailed Implementation

[0032] The present invention will be further described below with reference to specific embodiments:

[0033] A quick-change hydraulic tool includes a drive body 1 and a functional body 2. The drive body 1 is provided with a drive source and a piston chamber 11 is provided at one end of the drive body 1. A piston component 12 driven by the drive source is provided in the piston chamber 11. The functional body 2 is provided with a tool head 21 for operation. The tool head 21 is connected to a functional drive component 22 for installation in the piston chamber 11 and opposite to the piston component 12. The piston component (12) drives the tool head (21) to work through the functional drive component (22). The drive body 1 and the functional body 2 are provided with a quick-release assembly, which includes a locking sleeve 3 and a locking seat 4. The locking sleeve 3 is disposed on the functional body 2. The inner wall of the locking sleeve (3) is provided with a plurality of first limiting protrusions (31). The plurality of first limiting protrusions (31) are distributed around each other, and an installation space is formed between adjacent first limiting protrusions (31). The upper outer edge of the locking seat (4) is provided with a second limiting protrusion (41). The second limiting protrusion (41) can be inserted into the locking sleeve (3) through the installation space and rotated to cooperate with the locking sleeve (3) to lock the second limiting protrusion (41) onto the first limiting protrusion (31), thereby realizing the connection of the functional body (2) on the drive body (1).

[0034] Combination Figure 1 , 2 As shown in Figure 4, the attached figure only shows a part of the structure of the hydraulic tool. The driving body 1 has a housing, and a hydraulic cylinder 13 is provided inside the housing. The driving source includes a hydraulic pump connected to the hydraulic cylinder 13. A connecting sleeve 14 is provided on the hydraulic cylinder 13. The connecting sleeve 14 is hollow inside and has a piston chamber 11 formed inside. The piston component 12 is installed in the piston chamber 11. The lower part of the piston component 12 is connected to the hydraulic pump. During operation, the hydraulic pump delivers hydraulic oil to the lower part of the piston component 12 to make the piston component 12 slide upward, thereby performing the work of the hydraulic tool of this patent.

[0035] like Figure 1 , 4As shown, the functional body 2 in this patent is a housing. The upper end of the functional body 2 is used to install the tool head 21, and the lower end of the functional body 2 is provided with the locking sleeve 3. The locking sleeve 3 can be integrally formed on the lower end of the functional body 2, or installed on the lower end of the functional body 2 by means of threads. The tool head 21 in this patent is specifically a shearing head, which has two parts, left and right. The upper end of the functional body 2 is formed with a receiving groove for the shearing head, so that the shearing head is rotatably connected to the receiving groove at the upper end of the functional body 2. The functional driving component 22 includes a piston rod connected to the left and right shearing heads. The sliding of the piston rod causes the two shearing heads to open or close relative to each other, realizing the shearing operation. In this patent, the piston rod is inserted into the piston chamber 11 and contacts the piston member 12. The piston rod moves by sliding the piston member 12, thereby driving the tool head 21 to work. Since the hydraulic pump in this patent only pumps oil to the lower end of the piston member 12, a spring is sleeved on the piston rod. When the hydraulic pump depressurizes, the spring drives the piston member 12 to reset, so as to realize the reciprocating sliding of the piston member 12.

[0036] In this embodiment, the engaging sleeve 3 is integrally formed on the lower end of the functional body 2. The structure of the engaging sleeve 3 is directly formed on the functional body 2 during its casting process. The engaging sleeve 3 is hollow inside, and the functional drive member 22, i.e., the piston rod, passes through the center of the engaging sleeve 3 and extends outward. A first limiting protrusion 31 is provided on the inner edge of the lower opening of the engaging sleeve 3. In this embodiment, there are three first limiting protrusions 31, which are sequentially arranged around the inner edge of the lower opening of the engaging sleeve 3. The functional drive member 22 passes between the three first limiting protrusions 31. The engaging seat 4 is disposed on the driving body 1, specifically, it is formed on the upper end of the connecting sleeve 14; the engaging seat 4 is specifically a cylindrical frustum structure, the engaging seat 4 is hollow inside, and its interior is connected to the hydraulic cylinder 13 to form the piston chamber 11; there are three second limiting protrusions 41 on the outer edge of the engaging seat 4, and the angle difference between the three second limiting protrusions 41 is consistent with the angle difference between the three first limiting protrusions 31.

[0037] During installation, the drive body 1 and the functional body 2 are positioned opposite each other, causing the first limiting protrusion 31 on the engaging sleeve 3 and the second limiting protrusion 41 on the engaging seat 4 to be sequentially offset. This allows the drive body 1 and the functional body 2 to be inserted and connected, and the functional drive component 22 to be placed inside the piston cavity 11. When the second limiting protrusion 41 is completely inside the engaging sleeve 3, the functional body 2 is rotated to make the second limiting protrusion 41 and the first limiting protrusion 31 vertically aligned, i.e. Figure 2As shown, this is done so that the functional body 2 is connected to the driving body 1 without axial separation. At this time, the piston 12 can be driven to move by the driving source, thereby driving the functional driving component 22 to move outward to drive the tool head 21 to operate and realize product operation.

[0038] During disassembly, simply rotating the functional body 2 to realign the first limiting boss 31 and the second limiting boss 41 allows for axial separation of the drive body 1 and the functional body 2. Different functional bodies 2 can then be used for different product operations, such as... Figure 6 As shown, Figure 6 It is another type of functional body 2, and its functional head is specifically a ring pressure head. This type of functional body 2 is also equipped with a piston rod and a locking sleeve 3. Simply put the locking sleeve 3 on the locking seat 4 and rotate it so that the second limiting boss 41 is opposite to the first limiting boss 31 to achieve quick replacement of the functional body 2.

[0039] Furthermore, the engaging sleeve 3 / engaging seat 4 is provided with an elastic limiting member 42, and the engaging seat 4 / engaging sleeve 3 is provided with a limiting groove 32 that abuts against the elastic limiting member 42, so that when the second limiting boss 41 is opposite to the first limiting boss 31, the elastic limiting member 42 is located within the limiting groove 32. Figure 3-5 As shown, the elastic limiting member 42 in this patent is disposed on the engaging base 4, specifically on the end face of the outer ring of the engaging base 4. This end face has a mounting groove through which the elastic limiting member 42 is mounted. Specifically, the elastic limiting member 42 is a top bead 421 confined within the mounting groove. Below the top bead 421 is an elastic member 422 that provides an outward tendency to move. The elastic member 422 is a spring disposed within the mounting groove. The limiting groove 32 is an arc-shaped groove disposed on the end face of the engaging sleeve 3.

[0040] In the initial stage of installation of the drive body 1 and the functional body 2, the second limiting boss 41 is offset from the first limiting boss 31. At the same time, the elastic limiting member 42 and the limiting groove 32 are also offset. The pressure of the end face of the engaging sleeve 3 will cause the top bead 421 to overcome the elastic member 422 and move into the mounting groove. After the functional body 2 rotates, the second limiting boss 41 and the first limiting boss 31 are opposite to each other. At the same time, the elastic limiting member 42 is also opposite to the limiting groove 32, so that the top bead moves outward under the action of the elastic member 422 until it is pushed into the limiting groove 32, thereby restricting the rotation of the engaging sleeve 3 by the elastic limiting member 42.

[0041] In actual use, the hydraulic tool in this patent mainly moves axially. The rotation of the locking sleeve 3 is only performed when it is in quick release mode. The user rotates it to overcome the restoring force of the elastic limiting member 42 to disassemble it. During normal use, the hydraulic tool in this patent will not be subjected to radial force. Therefore, the quick release connection method described in this patent is stable and reliable, and easy to disassemble and replace. By replacing different functional main bodies 2, the hydraulic tool in this patent can obtain different functions to meet different usage needs.

[0042] Furthermore, the second limiting boss 41 is provided with a limiting pin 411 arranged along the axial direction of the driving body 1. The limiting pin 411 is used to abut against the side of the first limiting boss 31 when the second limiting boss 41 is opposite to the first limiting boss 31. Figure 3 As shown in Figure 6, the second limiting boss 41 is provided with a mounting hole 412, and the limiting pin 411 is fixed in the mounting hole 412. The limiting pin 411 can be fixed in the mounting hole 412 by means of thread or welding. By making the limiting pin 411 abut against the side of the first limiting boss 31, the maximum rotation angle of the functional body 2 is limited, and the user is prompted that the disassembly and assembly are complete.

[0043] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

[0044] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0045] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0046] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

Claims

1. A quick-change hydraulic tool, characterized in that, include, A driving body (1) has a piston chamber (11) at its end, and a piston component (12) that slides within the piston chamber (11) driven by a driving source; and The main body (2) is provided with a tool head (21) for operation. The tool head (21) is connected to a functional drive (22) for extending into the piston chamber (11) and abutting against the piston (12). The piston (12) drives the tool head (21) to operate through the functional drive (22). A quick-release assembly is provided between the drive body (1) and the functional body (2), which includes: The snap-fit ​​sleeve (3) is disposed on the functional body (2). The inner wall of the snap-fit ​​sleeve (3) is provided with a plurality of first limiting protrusions (31). The plurality of first limiting protrusions (31) are distributed around each other, and an installation space is formed between adjacent first limiting protrusions (31). A locking seat (4) is provided on the driving body (1), and a plurality of second limiting protrusions (41) are provided on the upper outer edge of the locking seat (4); The second limiting boss (41) can be inserted into the locking sleeve (3) through the installation space and rotated to cooperate with the locking sleeve (3) to lock the second limiting boss (41) onto the first limiting boss (31), thereby realizing the connection of the functional body (2) on the driving body (1).

2. The quick-change hydraulic tool according to claim 1, characterized in that: The locking sleeve (3) / locking seat (4) is provided with an elastic limiting member (42), and the locking seat (4) / locking sleeve (3) is provided with a limiting groove (32) that abuts against the elastic limiting member (42); When the second limiting boss (41) engages with the first limiting boss (31), the elastic limiting member (42) is located in the limiting groove (32).

3. A quick-change hydraulic tool according to claim 2, characterized in that: The elastic limiting member (42) includes a top bead (421), which is connected to an elastic member (422) that gives it an outward tendency to move.

4. A quick-change hydraulic tool according to claim 1, characterized in that: The second limiting boss (41) is provided with a limiting pin (411) arranged along the axial direction of the driving body (1). The limiting pin (411) is used to restrict the relative movement between the first limiting boss (31) and the second limiting boss (41).

5. A quick-change hydraulic tool according to claim 4, characterized in that: The second limiting boss (41) is provided with a mounting hole (412), and the limiting pin (411) is fixedly connected in the mounting hole (412).

6. A quick-change hydraulic tool according to claim 1, characterized in that: The driving body (1) includes a hydraulic cylinder (13) and a connecting sleeve (14) fixed to one end of the hydraulic cylinder (13), and the connecting sleeve (14) is provided with the locking seat (4).

7. A quick-change hydraulic tool according to claim 6, characterized in that: The card holder (4) is hollow, and the functional drive unit (22) is located inside the card sleeve (3) and is opposite to the middle part of the card holder (4).

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