Hoop pliers with crimping and shearing functions

Abstract

The utility model discloses a pair of clamp pincers with crimping and shearing functions, which comprises a left pincer handle, a right pincer handle, a left pincer head, a right pincer head and a cover plate, a first hinge shaft and a second hinge shaft are arranged on the cover plate, an eccentric shaft is arranged between the left pincer head and the right pincer head, one end of the eccentric shaft is connected with a movable swing block, the movable swing block is positioned on the outer side of the cover plate, and the other end of the movable swing block is connected with the right pincer head. The device further comprises a positioning pin and a positioning groove, the swing block swings to drive the eccentric shaft to rotate so that the pressing connection state and the shearing state can be switched, the positioning pin and the positioning groove are matched to achieve locking after adjustment, other tools are not needed, and adjustment is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to daily necessities technical field, especially a clamp wrench with the function of crimping and shearing. BACKGROUND

[0002] At present, with the vigorous development of domestic infrastructure construction and the increasing use of plastic and metal pipelines due to environmental protection requirements, the commonly used connection methods of plastic and metal pipelines in the connection process are hot melting, welding and clamp connection. Compared with the defects of hot melting and welding that consume heat and damage material performance, the clamp connection is not only less leakage, safe and reliable, but also very convenient to construct. The clamp connection in the prior art also has certain technical defects, such as the need to shear and reconnect the clamp, which often requires other tools to realize the shearing function. How to realize a tool that can both crimp and shear the clamp has been the object of research by technicians in the field.

[0003] In the prior art, a Chinese utility model patent with the patent name of clamp wrench with crimping and shearing functions, application number 201721916814.5, comprises a left handle and a right handle that cooperate with each other, the left handle is connected with a left jaw, the right handle is connected with a right jaw, a cover plate is arranged on the left jaw and the right jaw, and the left jaw and the right jaw are divided into two states of crimping state and shearing state when pinching. The main adjustment method is to adjust the position of the eccentric shaft to realize the adjustment of the distance between the left jaw and the right jaw, but this adjustment needs to use auxiliary tools to rotate the eccentric shaft out, and then adjust the position, which cannot be directly adjusted and used, and has limitations in use, and the state switching is relatively troublesome. SUMMARY

[0004] The utility model discloses a clamp wrench with crimping and shearing functions, which overcomes the defects of the prior art. The utility model adopts a swing block to drive the eccentric shaft to rotate, thereby realizing the state switching of crimping and shearing, and adopts a positioning pin and a positioning groove to realize the locking after adjustment, without the need for other tools, and the adjustment is more convenient.

[0005] The utility model discloses a clamp tongs with the function of crimping and shearing, including mutually coordinated left handle and right handle, left handle is connected with left tongs head, right handle is connected with right tongs head, still including the apron, be equipped with the first hinging shaft that passes through left tongs head on the apron, be equipped with the second hinging shaft that passes through right tongs head on the apron, still be equipped with eccentric shaft for controlling crimping or shearing function switching between left tongs head and right tongs head, its characterized in that: one end of eccentric shaft is connected with movable swing block, movable swing block is located the outside of apron, and eccentric shaft and movable swing block synchronous rotation, still including positioning pin and locating groove, when positioning pin is equipped with movable swing block, locating groove is equipped with apron and is located the active track of positioning pin, to make eccentric shaft rotation adjustment to movable swing block positioning, when positioning pin is equipped with apron, locating groove is equipped with movable swing block, and when eccentric shaft rotation switching state, locating groove can be movable to positioning pin position and realize the positioning of movable swing block.

[0006] The utility model discloses further provide: the arc abutting piece is integrally arranged on the right tongs head, and the arc abutting face that is matched with the arc abutting piece position is arranged on the left tongs head.

[0007] The utility model discloses further provide: the first limit surface is arranged on the eccentric shaft, and one end of the eccentric shaft corresponding apron extends to the movable swing block through the apron, the second limit surface that cooperates with the first limit surface is equipped with on the movable swing block, still include the locking piece that restricts the axial pullout of movable swing block, and the locking piece is equipped with on movable swing block and is fixed with eccentric shaft.

[0008] The utility model discloses further provide: the blocking piece is equipped with on the right tongs head, and the blocking surface is arranged on the left tongs head, when the right tongs head rotates to the specified position, the blocking piece can be abutted with the blocking surface, to make rotation limit.

[0009] The utility model discloses further provide: still include the handle shaft that passes through left handle and right handle, still be equipped with the ratchet wheel on handle shaft, still be equipped with the pawl that can be engaged with ratchet wheel on right handle, still be equipped with the adjusting bolt for controlling the engagement state of pawl and ratchet wheel on left handle.

[0010] The utility model discloses the beneficial effect: when using, the opening and closing of left handle and right handle can control left tongs head and right tongs head work, specifically adopt the hinge and can, and this working principle belongs to prior art, and this article will not make detailed specific introduction, when needing the state switching of crimping or shearing, through movable swing block swing, can drive eccentric shaft to rotate and directly adjust, need not through auxiliary tool, and when adjusting to the specified position, through the cooperation of positioning pin and locating groove can realize the positioning, prevent its self-rotation, and when using, it is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1The whole structure schematic view of the utility model is shown in the figure;

[0012] Figure 2 The cover plate is removed, and the structure schematic view is shown in the figure;

[0013] Figure 3 The eccentric shaft, the positioning pin and the movable swing block are matched, and the figure is shown in the figure;

[0014] Figure 4 The movable swing block and the positioning pin are matched, and the figure is shown in the figure;

[0015] Figure 5 The figure is shown in the figure; Figure 2 The local A enlarged view is shown in the figure;

[0016] Figure 6 The ratchet wheel, the pawl and the handle shaft are matched, and the figure is shown in the figure. Specific implementation

[0017] The specific implementation of the utility model is described in detail in combination with the drawings as follows:

[0018] In the description of the utility model, it is understood that the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0019] The utility model discloses a kind of clamp pliers with crimping and shearing function, including mutually matched left handle 1 and right handle 2, left handle 1 is connected with left jaw 3, right handle 2 is connected with right jaw 4, further including cover plate 5, cover plate 5 is most preferably provided with two respectively in left jaw 3 and right jaw 4 front and back two sides, first hinged shaft 6 passing through left jaw 3 is equipped on the cover plate 5, second hinged shaft 7 passing through right jaw 4 is equipped on the cover plate 5, so that left jaw 3 and right jaw 4 can be relatively rotated, eccentric shaft 8 for controlling crimping or shearing function switching is further equipped between left jaw 3 and right jaw 4, using the characteristics that eccentric shaft 8 is wide and narrow, the crimping interval of left jaw 3 and right jaw 4 is controlled, to realize the state switching of crimping or shearing, in the utility model embodiment, one end of the eccentric shaft 8 is connected with movable swing block 9, the movable swing block 9 is located at the outside of cover plate 5, and eccentric shaft 8 and movable swing block 9 rotate synchronously, further including positioning pin 10 and positioning groove 11, when positioning pin 10 is arranged on movable swing block 9, positioning groove 11 is arranged on cover plate 5 and is located on the active track of positioning pin 10, to position movable swing block 9 after eccentric shaft 8 is rotated and adjusted, when positioning pin 10 is arranged on cover plate 5, positioning groove 11 is arranged on movable swing block 9, and when eccentric shaft 8 rotates and switches state, positioning groove 11 can be moved to the position of positioning pin 10 to realize the positioning of movable swing block 9, the positioning pin 10 can also be arranged on movable swing block 9 using screw connection.

[0020] Using the above technical scheme, when using, left jaw 3 and right jaw 4 can be controlled to work by the opening and closing of left handle 1 and right handle 2, and the working principle belongs to the prior art, which will not be described in detail, when the state switching of crimping or shearing is needed, movable swing block 9 is swung to drive eccentric shaft 8 to rotate to directly adjust without the need of auxiliary tools, and when adjusted to the specified position, the positioning can be realized by the cooperation of positioning pin 10 and positioning groove 11 to prevent self-rotation, and the use is more stable.

[0021] Arc-shaped abutting block 12 is integrally arranged on right jaw 4, and arc-shaped abutting surface 13 matching arc-shaped abutting block 12 is arranged on left jaw 3, in order to better realize the shearing function, a fulcrum is needed, and the existing fulcrum usually adopts the cooperation of two grooves and a positioning shaft, the grooves of left jaw 3 and right jaw 4 are prone to misalignment, and the stability is poor, the cooperation of integral arc-shaped abutting block 12 and arc-shaped abutting surface 13 can provide a fulcrum and increase stability.

[0022] The eccentric shaft 8 is provided with a first limiting surface 81, and one end of the eccentric shaft 8 corresponding to the cover plate 5 extends through the cover plate 5 to the movable swing block 9, the movable swing block 9 is provided with a second limiting surface 91 matched with the first limiting surface 81, and further comprises a locking member 14 (the locking member 14 is most preferably a bolt) limiting the axial pulling-out of the movable swing block 9, the locking member 14 is threaded through the movable swing block 9 and fixed with the eccentric shaft 8, the cooperation of the first limiting surface 81 and the second limiting surface 91 can prevent the eccentric shaft 8 from rotating relative to the movable swing block 9, so that the movable swing block 9 can stably drive the eccentric shaft 8 to rotate, and the locking member 14 is locked to further prevent the movable swing block 9 from being pulled out.

[0023] The right jaw 4 is provided with a blocking block 15, and the left jaw 3 is provided with a blocking surface 16, when the right jaw 4 is rotated to a specified position, the blocking block 15 can abut against the blocking surface 16 to limit rotation, and when switched to a shearing state, the left jaw 3 and the right jaw 4 are easy to shear excessively, and the cooperation of the blocking block 15 and the blocking surface 16 can prevent excessive shearing.

[0024] Further comprising a jaw handle shaft 17 threaded through the left jaw handle 1 and the right jaw handle 2, the jaw handle shaft 17 is further provided with a ratchet wheel 18, the right jaw handle 2 is further provided with a pawl 19 engaged with the ratchet wheel 18, and the left jaw handle 1 is further provided with an adjusting bolt 20 for controlling the engagement state of the pawl 19 and the ratchet wheel 18, the cooperation of the ratchet wheel 18 and the pawl 19 can more easily achieve crimping or shearing, and the adjusting bolt 20 can also adjust the tightness.

Claims

1. A clamp pliers with the functions of crimping and shearing, comprising a left plier handle (1) and a right plier handle (2) matched with each other, the left plier handle (1) is connected with a left plier head (3), the right plier handle (2) is connected with a right plier head (4), further comprising a cover plate (5), the cover plate (5) is provided with a first hinge shaft (6) penetrating through the left plier head (3), the cover plate (5) is provided with a second hinge shaft (7) penetrating through the right plier head (4), and an eccentric shaft (8) for controlling the switching of the functions of crimping or shearing is further arranged between the left plier head (3) and the right plier head (4), characterized in that: One end of the eccentric shaft (8) is connected with a movable swing block (9), the movable swing block (9) is located outside the cover plate (5), and the eccentric shaft (8) rotates synchronously with the movable swing block (9), further comprising a positioning pin (10) and a positioning groove (11), when the positioning pin (10) is arranged on the movable swing block (9), the positioning groove (11) is arranged on the cover plate (5) and located on the movement track of the positioning pin (10), so that the eccentric shaft (8) is positioned after rotation adjustment, when the positioning pin (10) is arranged on the cover plate (5), the positioning groove (11) is arranged on the movable swing block (9), and when the eccentric shaft (8) rotates and switches state, the positioning groove (11) can be moved to the position of the positioning pin (10) to realize the positioning of the movable swing block (9).

2. The clamp pliers with the functions of crimping and shearing according to claim 1, characterized in that: The right jaw (4) is integrally provided with an arc-shaped abutting block (12), and the left jaw (3) is provided with an arc-shaped abutting surface (13) corresponding to the position of the arc-shaped abutting block (12).

3. The clamp pliers with the functions of crimping and shearing according to claim 1 or 2, characterized in that: The eccentric shaft (8) is provided with a first limiting surface (81), and one end of the eccentric shaft (8) extends through the cover plate (5) to be inserted into the movable swing block (9) corresponding to the cover plate (5), the movable swing block (9) is provided with a second limiting surface matched with the first limiting surface (81), further comprising a locking member (14) limiting the axial pulling out of the movable swing block (9), the locking member (14) is arranged on the movable swing block (9) and fixed with the eccentric shaft (8).

4. The clamp pliers with the functions of crimping and shearing according to claim 2, characterized in that: The right jaw (4) is provided with a blocking block (15), and the left jaw (3) is provided with a blocking surface (16), when the right jaw (4) is rotated to a specified position, the blocking block (15) can abut against the blocking surface (16) to limit rotation.

5. The clamp pliers with the functions of crimping and shearing according to claim 3, characterized in that: Further comprising a handle shaft (17) penetrating through the left handle (1) and the right handle (2), the handle shaft (17) is further provided with a ratchet wheel (18), the right handle (2) is further provided with a pawl (19) engageable with the ratchet wheel (18), and the left handle (1) is further provided with an adjusting bolt (20) for controlling the engagement state of the pawl (19) and the ratchet wheel (18).

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