Quick-change chuck

Abstract

The utility model discloses a quick-change chuck, and relates to the technical field of connectors. The quick-change chuck comprises a lining cylinder, at least two clamping and fixing pieces, an outer cylinder and a control assembly, the clamping and fixing pieces are annularly installed on the outer surface of the lining cylinder in a surrounding mode, a gap is formed between every two adjacent clamping and fixing pieces, the adjacent position states are maintained or changed through an elastic assembly, and internal threads are arranged on the inner walls of the tail ends of the outer sides of the clamping and fixing pieces. The inner diameter of the outer cylinder is gradually increased from the inner side to the outer side, the outer diameter of the clamping and fixing piece is gradually increased from the inner side to the outer side, the inner wall of the outer cylinder is matched with the slope face of the outer wall of the clamping and fixing piece, the outer wall of the clamping and fixing piece is provided with a sliding notch and a limiting notch, and the outer cylinder slides along the sliding notch through a sliding assembly. The sliding assembly is clamped into the limiting notch to maintain the position state of the outer barrel and the clamping and fixing piece, and the outer barrel is connected with the control assembly. Axial displacement and rotary locking of the outer cylinder can be achieved by controlling the single push-pull action of the handle, multiple rotation operations of traditional threaded butt joint are not needed, and the installation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to interface technical field, concretely is a quick change chuck. BACKGROUND

[0002] The conventional fire fighting interface adopts the thread rotation joint mode, and the conventional thread connection needs to rotate for many circles, and usually 6-8 circles can realize the sealing, in the fire scene rescue and other emergency scenes, the fireman completes single interface connection and takes 15-20 seconds, and the use effect of the conventional interface is poor, in addition, the rotation operation needs to cooperate with both hands, and it is difficult to implement in the narrow space or inclined pipeline, based on this, the utility model person studies and proposes the case. CONTENT OF THE UTILITY MODEL

[0003] The utility model provides a quick change chuck, it overcomes the insufficient described in the background art.

[0004] The utility model solves the technical scheme that its technical problem adopts:

[0005] A quick change chuck, including inner lining tube, clamping piece, outer tube, control assembly, the clamping piece is provided with at least two, and all clamping pieces are annularly installed on the outer surface of inner lining tube, adjacent clamping pieces are provided with spacing, and the position state of adjacent clamping pieces is maintained or changed through elastic component, the inner thread is arranged on the inner wall of the outer end of clamping piece, the inner diameter of outer tube gradually increases from inside to outside, the outer diameter of clamping piece gradually increases from inside to outside, and the inner wall of outer tube and the outer wall slope of clamping piece are matched, the outer wall of clamping piece is provided with sliding slot and limiting slot, the outer tube slides along sliding slot through sliding component, the sliding component is clamped into limiting slot to maintain the position state of outer tube and clamping piece, and the control assembly is connected and installed on the outer tube.

[0006] In some embodiments, one end of the inner lining tube is connected to a transfer joint, and the transfer joint is provided through the pipeline.

[0007] In some embodiments, the control assembly includes a mounting frame and a control handle, the mounting frame and the control handle are integrally formed, the mounting frame is locked and mounted on the side end of the outer tube, a slot is formed in the outer tube, and the control handle passes through the slot.

[0008] In some embodiments, the elastic component includes a spring, a spring groove is preformed on the clamping piece, and the spring is connected in the spring groove.

[0009] In some embodiments, two springs are arranged on each clamping piece.

[0010] In some embodiments, the sliding component includes a sliding rod, the sliding rod is installed on the outer tube, and the inside of the sliding rod extends into the sliding slot or the limiting slot.

[0011] In some embodiments, the sliding notch and the limiting notch form a 7-shaped structure.

[0012] In some embodiments, two clamping members are provided.

[0013] In some embodiments, four 7-shaped structures are provided.

[0014] In some embodiments, the control handle is symmetrically arranged on the mounting frame.

[0015] By adopting the technical scheme, the utility model has the advantages of:

[0016] 1. The utility model discloses a control handle single push-pull action can realize the axial displacement of outer cylinder and rotation locking, need not the multiple rotation operation of traditional screw thread butt joint, and installation efficiency is promoted.

[0017] 2. The utility model discloses a 7-shaped sliding limiting structure, sets up multiple groups of cooperation, makes the operation process have definite mechanical positioning feeling, can complete the connecting operation quickly, and reduces operation intensity. DRAWINGS

[0018] The utility model will be further described below in combination with the drawings and examples.

[0019] Figure 1 It is the structural schematic diagram of the utility model;

[0020] Figure 2 It is the structural schematic diagram of another view of the utility model;

[0021] Figure 3 It is the plane structural schematic diagram in Figure 2 ;

[0022] Figure 4 It is the sectional view of A-A in Figure 3 ;

[0023] Figure 5 It is the sectional view of B-B in Figure 3 ;

[0024] Figure 6 It is the structural schematic diagram of the hidden outer cylinder rear quick-change chuck;

[0025] Figure 7 It is the structural schematic diagram of sliding notch and limiting notch;

[0026] Figure 8 It is the structural schematic diagram of inner lining cylinder through connecting piece and reinforcing member connection;

[0027] Figure 9 It is the structural schematic diagram when hiding partial clamping member;

[0028] Figure 10 For Figure 9 A local enlarged view at the middle of A.

[0029] Explanation of main reference signs:

[0030] 1, inner lining cylinder; 2, clamping piece; 21, spacing; 22, sliding notch; 23, limiting notch; 24, spring groove; 25, internal thread; 3, outer cylinder; 31, notch; 4, control assembly; 41, mounting frame; 42, control handle; 5, sliding assembly; 51, sliding rod; 6, elastic assembly; 61, spring; 7, transfer joint; 8, connecting piece. DETAILED DESCRIPTION

[0031] As Figures 1-10 shown, the utility model provides a quick change chuck, including inner lining cylinder 1, clamping piece 2, outer cylinder 3, control assembly 4, clamping piece 2 is provided with at least two, and all clamping pieces 2 are annular and are installed on the outer surface of inner lining cylinder 1, adjacent clamping pieces 2 are provided with spacing 21, and the position state of adjacent is maintained or changed through elastic assembly 6, the inner wall of the outer end of clamping piece 2 is provided with internal thread 25, the inner diameter of outer cylinder 3 gradually increases from the inside to the outside, the outer diameter of clamping piece 2 gradually increases from the inside to the outside, and the inner wall of outer cylinder 3 and the outer wall slope of clamping piece 2 are matched, the outer wall of clamping piece 2 is provided with sliding notch 22 and limiting notch 23, outer cylinder 3 slides along sliding notch 22 through sliding assembly 5, sliding assembly 5 is clamped into limiting notch 23 to maintain the position state of outer cylinder 3 and clamping piece 2, and control assembly 4 is connected and installed on outer cylinder 3.

[0032] According to some embodiments of the utility model, optionally, inner lining cylinder 1 one end through connection transfer joint 7, transfer joint 7 through setting pipeline.

[0033] According to some embodiments of the utility model, optionally, control assembly 4 includes mounting frame 41 and control handle 42, mounting frame 41 is integrally formed with control handle 42, mounting frame 41 is locked and installed on the side end of outer cylinder 3, notch 31 is formed on outer cylinder 3, and control handle 42 passes through notch 31.

[0034] According to some embodiments of the utility model, optionally, elastic assembly 6 includes spring 61, spring groove 24 is prefabricated on clamping piece 2, and spring 61 is connected in spring groove 24.

[0035] According to some embodiments of the utility model, optionally, two springs 61 are arranged on single-side clamping piece 2.

[0036] According to some embodiments of the present invention, optionally, the sliding component 5 includes a slide rod 51, which is mounted on the outer cylinder 3, and the inner side of the slide rod 51 extends into the sliding groove 22 or the limiting groove 23.

[0037] According to some embodiments of the present invention, optionally, the sliding groove 22 and the limiting groove 23 form a 7-shaped structure.

[0038] According to some embodiments of this utility model, optionally, two clamping members 2 are provided.

[0039] According to some embodiments of this utility model, optionally, four 7-shaped structures are provided.

[0040] According to some embodiments of the present invention, optionally, the control arm 42 is symmetrically arranged on the mounting frame 41.

[0041] Example 1

[0042] This embodiment provides a quick-change chuck, including an inner liner 1, clamping members 2, an outer cylinder 3, and a control component 4. At least two clamping members 2 are provided, and all clamping members 2 are annularly mounted around the outer surface of the inner liner 1. They can be connected via a connector 8. Adjacent clamping members 2 are spaced 21 apart, and their adjacent positions are maintained or changed by an elastic component 6. The inner wall of the outer end of each clamping member 2 is provided with an internal thread 25, as shown in the reference. Figure 2 The outer side is the side with the internal thread 25. The inner diameter of the outer cylinder 3 gradually increases from the inner side to the outer side, and the outer diameter of the clamping member 2 also gradually increases from the inner side to the outer side. Similarly, from the inner side to the outer side is from the control component 4 side to the internal thread 25 side, and the inner wall of the outer cylinder 3 matches the outer wall slope of the clamping member 2. The outer wall of the clamping member 2 is provided with a sliding groove 22 and a limiting groove 23. The outer cylinder 3 slides along the sliding groove 22 through the sliding component 5, and the sliding component 5 is engaged in the limiting groove 23 to maintain the position of the outer cylinder 3 and the clamping member 2. The control component 4 is connected and installed on the outer cylinder 3.

[0043] One end of the inner liner 1 is connected to a transfer joint 7, through which a pipe is installed. The control component 4 includes a mounting frame 41 and a control handle 42. The mounting frame 41 and the control handle 42 are integrally formed. The mounting frame 41 is locked to the side of the outer cylinder 3. The outer cylinder 3 has a slot 31, through which the control handle 42 passes. Two control handles 42 can be provided and symmetrically arranged on the mounting frame 41. The elastic component 6 includes a spring 61. A spring groove 24 is pre-fabricated on the clamp 2, and the spring 61 is connected to the spring groove 24. Two springs 61 are provided on one side of the clamp 2. The sliding component 5 includes a slide rod 51, which is installed on the outer cylinder 3. The inner side of the slide rod 51 extends into the sliding groove 22 or the limiting groove 23. The sliding groove 22 and the limiting groove 23 form a 7-shaped structure. Two clamps 2 are provided, and four 7-shaped structures are provided.

[0044] Taking the quick-change clamp structure in Embodiment 1 as an example, the quick-change clamp can be used to quickly match fire hoses to fire hydrant interfaces. When the distance 21 between adjacent clamps 2 is not changed by controlling the outer cylinder 3 via the control handle 42, the opening of the pipe on the inner wall of the clamp 2 is larger than the opening of the fire hydrant interface. Therefore, it is not necessary to match the internal thread 25 of the clamp 2 with the external thread of the fire hydrant interface by tightening. During installation, first, fit the inner wall of the clamp 2 onto the fire hydrant interface, and then push the outer cylinder 3 to move using the control handle 42, referring to... Figure 5 The inner wall of the outer cylinder 3 and the outer wall of the clamp 2 are both inclined slopes, and the two slopes match. When the outer cylinder 3 moves toward the inner thread 25 of the clamp 2, the two slopes come into contact, which compresses the spring 61 between adjacent clamps 2, reduces the distance 21, and reduces the opening of the pipe on the inner wall of the clamp 2. The inner thread 25 on the clamp 2 engages and seals with the outer thread on the fire hydrant interface. After the outer cylinder 3 is moved to the preset position, the outer cylinder 3 is rotated by the control handle 42, which causes the slide rod 51 to engage with the limiting slot 23. At this time, the position state between the outer cylinder 3 and the clamp 2 is restricted, so that the inner thread 25 of the clamp 2 engages stably with the outer thread on the fire hydrant interface. During disassembly, first slide the slide bar 51 out of the limiting slot 23, and then control the outer cylinder 3 to move away from the internal thread 25 of the clamp 2 by controlling the handle 42. The sliding slot 22 cooperates with the slide bar 51 to improve the stability of the movement of the outer cylinder 3. When the outer cylinder 3 moves away from the internal thread 25 of the clamp 2, since the inner wall of the outer cylinder 3 no longer acts on the outer wall of the clamp 2, the spring 61 makes the distance 21 between adjacent clamps 2 larger, and the internal thread 25 of the clamp 2 no longer makes close contact with the fire hydrant interface, thus releasing the connection between the clamp 2 and the fire hydrant interface.

[0045] The above description is only a preferred embodiment of the present utility model, and therefore cannot be used to limit the scope of the present utility model. All equivalent changes and modifications made in accordance with the scope of the present utility model patent and the contents of the specification should still fall within the scope of the present utility model.

Claims

1. A quick-change chuck, characterized in that, The device includes an inner liner, clamps, an outer cylinder, and a control assembly. At least two clamps are provided, and all clamps are annularly mounted around the outer surface of the inner liner. Adjacent clamps are spaced apart and their positions are maintained or altered by an elastic component. The inner wall of the outer end of each clamp has an internal thread. The inner diameter of the outer cylinder gradually increases from the inside to the outside, as does the outer diameter of the clamps. The inner wall of the outer cylinder matches the slope of the outer wall of the clamps. The outer wall of each clamp has a sliding groove and a limiting groove. The outer cylinder slides along the sliding groove via a sliding component, and the sliding component engages with the limiting groove to maintain the position of the outer cylinder and the clamps. The control assembly is connected and installed on the outer cylinder.

2. The quick-change chuck according to claim 1, characterized in that, One end of the inner liner is connected to a transfer joint, and a pipe is installed through the transfer joint.

3. The quick-change chuck according to claim 1, characterized in that, The control component includes a mounting frame and a control handle. The mounting frame and the control handle are integrally formed. The mounting frame is locked to the side of the outer cylinder. The outer cylinder has a slot, and the control handle passes through the slot.

4. The quick-change chuck according to claim 1, characterized in that, The elastic component includes a spring, and a spring groove is pre-formed on the clamp, with the spring connected within the spring groove.

5. The quick-change chuck according to claim 4, characterized in that, Two springs are provided on one side of the clamping device.

6. The quick-change chuck according to claim 1, characterized in that, The sliding assembly includes a slide rod, which is mounted on the outer cylinder and extends into a sliding groove or a limiting groove.

7. The quick-change chuck according to claim 1, characterized in that, The sliding groove and the limiting groove form a 7-shaped structure.

8. The quick-change chuck according to claim 1, characterized in that, Two clamping devices are provided.

9. The quick-change chuck according to claim 7, characterized in that, The 7-shaped structure is set up in four places.

10. The quick-change chuck according to claim 3, characterized in that, The controls are symmetrically arranged on the mounting frame.

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