CN216200783U - Pipe clamp - Google Patents

Abstract

The utility model discloses a pipe clamp, aiming at overcoming the problems of complex operation, time and labor waste and poor clamping effect in the prior art, comprising a first member, wherein a second member is hinged on the first member, the first member comprises a first clamping plate, the second member comprises a second clamping plate, the first clamping plate and the second clamping plate enclose a clamping area, the integral structure of the first clamping plate and the integral structure of the second clamping plate are in a straight shape, the first member also comprises a pawl and an elastic arm, the second member also comprises a ratchet bar, the elastic arm forces the pawl to be engaged on the ratchet bar, the pawl, the ratchet bar and the elastic arm form a ratchet mechanism, the ratchet mechanism is used for preventing the first clamping plate from being lifted on the second clamping plate, the elastic arm is provided with a power arm and comprises a bending portion, the elastic arm can elastically deform around the bending portion, and the bending portion, the power arm and the pawl are sequentially arranged on the elastic arm.

Description

Pipe clamp

Technical Field

The utility model belongs to a flow rate regulator, in particular to a pipe clamp.

Background

A pipe clamp, also called flow rate regulator, is a device for regulating the size of the flow cross section of a pipe. Existing pipe clamps are commonly used in medical, biological, and other fields.

In the prior art, the pipe clamp is arranged on a pipeline, liquid or gas flows in the pipeline, the pipeline is made of a material with rich elasticity, and the pipe clamp can clamp or loosen the pipeline by controlling the pipe clamp, so that the effect of adjusting the flow section of the pipeline is achieved.

However, the prior art is not perfect, and the prior pipe clamp has the problems of complex operation, time and labor waste and poor clamping effect when the tightness of the pipeline is adjusted.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects and problems in the prior art, the utility model provides a pipe clamp.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a pipe clamp comprising a first member having a second member hinged thereto;

the first component comprises a first clamping plate, the second component comprises a second clamping plate, the first clamping plate and the second clamping plate enclose a clamping area, and the integral structure of the first clamping plate and the integral structure of the second clamping plate are in a straight shape;

the first component further comprises a pawl and an elastic arm, the second component further comprises a ratchet bar, the elastic arm forces the pawl to be meshed with the ratchet bar, and the pawl, the ratchet bar and the elastic arm form a ratchet mechanism which is used for preventing the first clamping plate from being lifted on the second clamping plate;

the power arm is formed on the elastic arm, the elastic arm comprises a bending portion, the elastic arm can elastically deform around the bending portion, and the bending portion, the power arm and the pawl are sequentially arranged on the elastic arm.

Preferably, first outer chamfers are formed on two sides of the first clamping plate, and second outer chamfers are formed on two sides of the second clamping plate.

Preferably, the first member is hinged to the second member through a rotating shaft, the first member further comprises a first handle, the rotating shaft, the first clamping plate and the first handle are sequentially arranged on the first member, the second member further comprises a second handle, and the rotating shaft, the second clamping plate and the second handle are sequentially arranged on the second member.

Preferably, the first handle is provided with a first threading hole, and the second handle is provided with a second threading hole.

Preferably, an inwardly concave arc-shaped surface is formed on the power arm, and the arc-shaped surface is used for being matched on the fingers of a user.

Preferably, the pawl has a first ratchet tooth, the ratchet bar has a second ratchet tooth, and the cross section of the first ratchet tooth and the cross section of the second ratchet tooth are both triangular.

Preferably, the pawl and the resilient arm are integrally formed on the first jaw and the ratchet bar is integrally formed on the second jaw.

Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:

(1) in the utility model, the ratchet mechanism plays a role in reverse locking, a user only needs to push the first clamping plate to be close to the second clamping plate, the clamping area between the first clamping plate and the second clamping plate can be reduced, the pipe fitting in the clamping area is clamped, so that the flow area of the pipe fitting is reduced, if the user applies force to the power arm, the pawl on the elastic arm is driven to be separated from the ratchet bar, the first clamping plate can be lifted on the second clamping plate, so that the flow area of the pipe fitting is increased, the pipe fitting is conveniently taken and placed from the clamping area, and therefore, the pipe clamp has the advantages of adjustable pipe fitting flow rate, simplicity and convenience in operation, simple structure and firm connection.

(2) In the utility model, the bending part, the power arm and the pawl are sequentially arranged on the elastic arm to form a labor-consuming lever, and the pawl can be driven to move for a larger distance only by moving a smaller distance according to a hand on the power arm, so that the effect of separating the pawl from the ratchet bar is achieved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view showing the structure of the binding band of the present invention inserted into the first and second threading holes;

FIG. 3 is a schematic illustration of an explosive structure of the present invention;

FIG. 4 is a schematic cross-sectional view of a rotating shaft according to the present invention;

fig. 5 is a schematic structural view of the end cap of the present invention.

In the figure: 1-first component, 2-second component, 3-rotating shaft, 4-second end cover, 6-binding band, 11-first joint, 12-first clamping plate, 13-first handle, 14-pawl, 15-elastic arm, 16-power arm, 21-second joint, 22-second clamping plate, 23-second handle, 24-ratchet bar, 31-first end cover, 32-slot, 33-slot, 41-elastic bolt, 42-buckle, 111-first shaft hole, 121-first external chamfer, 131-first thread hole, 141-first ratchet, 151-bending part, 161-arc surface, 211-second shaft hole, 221-second external chamfer, 231-second thread hole, 241-second ratchet, 421-guide ramp.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings and the specific embodiments.

As shown in fig. 1-5, a pipe clamp comprises a first member 1 and a second member 2, the first member 1 being hinged to the second member 2. If the first member 1 is rotated on the second member 2, the first member 1 can be folded or unfolded on the second member 2.

The first component 1 comprises a first clamping plate 12, the integral structure of the first clamping plate 12 is in a shape like a Chinese character 'yi', the second component 2 comprises a second clamping plate 22, the integral structure of the second clamping plate 22 is also in a shape like a Chinese character 'yi', and the first clamping plate 12 and the second clamping plate 22 enclose a clamping area.

Wherein a gripping area refers to an area for placing a tubular to be gripped. The pipe means a hose for transferring fluid. The fluid may be a liquid or a gas. The first clamp plate 12 and the second clamp plate 22 can clamp on both sides of a tubular, respectively, if the tubular to be clamped is placed in the clamping area. When the first member 1 is folded on the second member 2, both ends of the first clamping plate 12 are respectively arranged on both ends of the second clamping plate 22, and the whole structure of the clamping area is in a shape of a straight line. If the first clip 12 is lifted on the second clip 22 when the first member 1 is unfolded on the second member 2, the clamping area is gradually opened. In use, if the gripping area is gradually opened and the first and second jaws 12 and 22 are released from the tubular, the tubular can be removed from or placed into the gripping area, thereby facilitating the tightening and loosening of the tubular and the removal or placement of the tubular into the gripping area.

In practical use, the first clamping plate 12 is lifted on the second clamping plate 22, the pipe to be clamped is placed on the second clamping plate 22, the first clamping plate 12 is folded on the second clamping plate 22, the pipe can be arranged in the clamping area and clamped by the first clamping plate 12 and the second clamping plate 22, and if the first clamping plate 12 is closer to the second clamping plate 22, the clamping force of the first clamping plate 12 and the second clamping plate 22 on the pipe is larger, and the flow cross section of the pipe is smaller.

In particular, the first component 1 is made of plastic, as is the second component 2. The first component 1 is an integrated piece, the second component 2 is also an integrated piece, and the first component 1 and the second component 2 are both manufactured by adopting an integrated injection molding process.

The first member 1 comprises a pawl 14 and a resilient arm 15, the second member 2 comprises a ratchet bar 24, the resilient arm 15 forces the pawl 14 to engage the ratchet bar 24, and the pawl 14, the ratchet bar 24 and the resilient arm 15 form a ratchet mechanism for blocking the first clamping plate 12 from being opened on the second clamping plate 22.

Herein, the ratchet mechanism refers to a movement mechanism that prevents the first member 1 from rotating reversely on the second member 2 and allows the first member 1 to rotate only in one direction on the second member 2. The ratchet mechanism does not prevent the first jaw 12 from moving in a direction to fold over the second jaw 22, but does prevent the first jaw 12 from moving in a direction to open over the second jaw 22.

In practical use, a pipe to be clamped is placed in the clamping area, the first clamping plate 12 is driven to fold on the second clamping plate 22, the pipe can be clamped between the first clamping plate 12 and the second clamping plate 22, and the ratchet mechanism prevents the first clamping plate 12 from being lifted on the second clamping plate 22, and prevents the pipe from driving the first clamping plate 12 of the pipe clamp to be lifted on the second clamping plate 22.

In the utility model, the ratchet mechanism has the function of reverse locking, a user only needs to push the first clamping plate 12 to be close to the second clamping plate 22, the clamping area between the first clamping plate 12 and the second clamping plate 22 can be reduced, the pipe fitting in the clamping area is clamped, and the flow area of the pipe fitting is reduced, if the user applies force to the power arm 16, the pawl 14 on the driving elastic arm 15 is separated from the ratchet rack 24, the first clamping plate 12 can be lifted on the second clamping plate 22, so that the flow area of the pipe fitting is increased, and the pipe fitting is conveniently taken and placed from the clamping area, therefore, the pipe fitting clamp has the advantages of adjustable flow rate of the pipe fitting, simple and convenient operation, simple structure and firm connection.

Specifically, the first clamping plate 12, the elastic arm 15 and the pawl 14 are integrally formed together, the elastic arm 15 is disposed on the outer side of the first clamping plate 12, and the pawl 14 is disposed on the outer end of the elastic arm 15. The ratchet bar 24 and the second member 2 are integrally formed together. The number of parts is reduced, and the cost is reduced.

Specifically, the pawl 14 is curved such that if the first member 1 is rotated on the second member 2, the pawl 14 can move on the ratchet bar 24 and the ratchet bar 24 can engage different positions on the pawl 14 such that the pawl 14 can remain engaged on the ratchet bar 24 at all times during the rotation of the first member 1 on the second member 2.

First and second outer chamfers 121 and 221 are formed on both sides of the first and second clamping plates 12 and 22, respectively.

If a pipe is to be placed in the gripping area, the first clamp plate 12 and the second clamp plate 22 are placed on either side of the pipe. The first clamping plate 12 sinks on the deformed pipe, and the first outer chamfer 121 plays a role in preventing the first clamping plate 12 from scratching the pipe, and also facilitates the sinking of the first clamping plate 12 on the deformed pipe. The second clamping plate 22 is also sunk on the deformed pipe, and the second outer chamfer 221 plays a role in preventing the second clamping plate 22 from scratching the pipe and also facilitates the sinking of the second clamping plate 22 on the deformed pipe.

The pawl 14 is provided with a first ratchet tooth 141, the ratchet bar 24 is provided with a second ratchet tooth 241, the cross section of the first ratchet tooth 141 and the cross section of the second ratchet tooth 241 are both triangular, so that the effect that the pawl 14 can slide on the ratchet bar 24 in one direction and can be locked in the opposite direction is achieved.

The number of the first ratchet teeth 141 is at least two, and two or more first ratchet teeth 141 are sequentially provided in the longitudinal direction of the ratchet 14. If the first pawl 14 moves on the ratchet bar 24, the ratchet bar 24 can be engaged on different positions of the pawl 14, thereby adjusting the tightness of the locking of the first member 1 and the second member 2 to the pipe.

The power arm 16 is fixedly disposed on the elastic arm 15, the power arm 16 is used for facilitating a user to drive the elastic arm 15 to generate elastic deformation, and if the elastic arm 15 generates elastic deformation, the pawl 14 can be separated from the ratchet bar 24, so that the first component 1 can freely rotate on the second component 2.

The elastic arm 15 includes a flexible portion 151, the elastic arm 15 is elastically deformable around the flexible portion 151, and the flexible portion 151, the power arm 16 and the pawl 14 are sequentially disposed on the elastic arm 15.

Here, the flexure 151 refers to a portion of the elastic arm 15 that can be bent. When the elastic arm 15 is stressed, the elastic arm 15 can elastically deform around the flexure 151. The flexible part 151, the power arm 16 and the pawl 14 are sequentially arranged on the elastic arm 15, so that a labor-consuming lever is formed, and the effect of saving distance is achieved.

In actual use, a user can press the power arm 16 to apply force to the elastic arm 15, and the elastic arm 15 under the force can be elastically deformed, so that the pawl 14 on the elastic arm 15 can be disengaged from the ratchet bar 24.

In the utility model, the flexible portion 151, the power arm 16 and the pawl 14 are sequentially arranged on the elastic arm 15 to form a labor-consuming lever, and the hand pressing on the power arm 16 only needs to move a small distance to drive the pawl 14 to move a large distance, so that the effect of disengaging the pawl 14 from the ratchet bar 24 is achieved, therefore, the pipe clamp has the advantages of saving the moving distance of the pawl 14, being reasonable in design and being convenient for improving the structure compactness.

Specifically, the power arm 16 is integrally formed on the elastic arm 15, and the power arm 16 and the pawl 14 are respectively provided on both sides of the elastic arm 15.

The power arm 16 is formed with an inwardly concave arc surface 161, and the arc surface 161 is adapted to fit the fingers of the user. Specifically, the power arm 16 has an arc-shaped plate body in the whole structure, and an arc-shaped surface 161 is arranged on the side surface of the power arm 16.

In actual use, the user's fingers may fit over the arcuate surface 161 to further facilitate the application of force to the power arm 16.

The first member 1 is hinged to the second member 2 by means of a hinge 3. First shaft hole 111 has been seted up on first component 1, second shaft hole 211 has been seted up on the second component 2, and first shaft hole 111 is worn to locate by pivot 3, and second shaft hole 211 is still worn to locate by pivot 3, and first component 1 can revolve pivot 3 and rotate. The rotating shaft 3 is fixedly provided with a first end cover 31 and a second end cover 4, the first member 1 is arranged between the first end cover 31 and the second end cover 4, the second member 2 is also arranged between the first end cover 31 and the second end cover 4, the first end cover 31 and the second end cover 4 axially fix the first member 1 on the rotating shaft 3, the first end cover 31 further axially fix the second member 2 on the rotating shaft 3, and axial shaking of the first member 1 and the second member 2 on the rotating shaft 3 is avoided.

Wherein the hinge structure is used to hinge the first member 1 and the second member 2 together. The hinge structure comprises a rotating shaft 3, a bolt 41, a first end cover 31 and a second end cover 4, wherein the rotating shaft 3, the first end cover 31 and the second end cover 4 are used for hinging the first member 1 and the second member 2 together.

In the present invention, the first member 1, the second member 2 and the second end cap 4 can be sequentially assembled on the rotary shaft 3, thereby hinging the first member 1 and the second member 2 together, so the pipe clamp has the advantages of convenient assembly and firm connection.

Specifically, the first end cap 31 is integrally formed on the rotating shaft 3, so that the number of parts is reduced, and the cost is reduced.

The rotating shaft 3 is provided with a slot 32, the second end cover 4 is provided with an elastic bolt 41, the elastic bolt 41 is inserted into the slot 32, the rotating shaft 3 is further provided with a clamping groove 33, the clamping groove 33 is arranged on the inner side wall of the slot 32, a buckle 42 is formed on the outer side wall of the elastic bolt 41, the buckle 42 is inserted into the clamping groove 33, the elastic bolt 41 forces the buckle 42 to be inserted into the clamping groove 33, and therefore the elastic bolt 41 is positioned in the slot 32.

The elastic plug 41 is a plug that can be elastically deformed. If the elastic plug 41 is inserted into the slot 32, the elastic plug 41 is elastically deformed, and the elastic plug 41 exerts an elastic force on the rotating shaft 3, so that the catch 42 of the elastic plug 41 is kept inserted into the slot 33. The elastic bolt 41 is made of a material with high elasticity, for example, the elastic bolt 41 is made of polyethylene.

In the utility model, the bolt is inserted into the slot 32, and the buckle 42 is inserted into the slot 33, so that the second end cover 4 is fixedly arranged on the rotating shaft 3, and the second end cover 4 is assembled on the rotating shaft 3 without tools, and the assembly can be completed only by inserting the bolt into the slot 32, therefore, the pipe clamp has the advantages of simple structure and convenient assembly.

The number of the elastic bolts 41 is at least two, two or more elastic bolts 41 are arranged on the second end cover 4 in a circumferential arrangement mode, the two or more elastic bolts 41 surround a circular area, the cross section of the circular area is circular, and the cross section of the slot 32 is also circular.

Wherein, two or more than two elasticity bolts 41 are inserted and are established in same slot 32, two or more than two elasticity bolts 41 and bolt looks adaptation to all-round butt is on the inside wall of slot 32, avoids elasticity bolt 41 to take place the problem of rocking in slot 32, has also further improved the cooperation fastness of buckle 42 and draw-in groove 33.

The whole structure of the clamping groove 33 is annular, the clamping groove 33 surrounds the inner side wall of the slot 32, and the buckles 4242 on two or more elastic bolts 41 can be inserted into the same clamping groove 33, so that the matching firmness of the buckles 42 and the clamping groove 33 is improved.

At least two buckles 42 are arranged on any one elastic bolt 41, and two or more buckles 42 on the elastic bolt 41 are sequentially arranged in the length direction of the elastic bolt 41.

When the latch 42 at different positions of the elastic latch 41 is inserted into the slot 33, the distance between the first end cap 31 and the second end cap 4 is changed, so that the position of the second end cap 4 on the rotating shaft 3 is adjustable. In practical use, if the distance between the first end cap 31 and the second end cap 4 is adjusted, the first member 1 and the second member 2 with dimensional deviation are fastened, and the first member 1 and the second member 2 with different specifications can be hinged together, so that the application range of the pipe clamp is improved.

Specifically, there are at least two card slots 33, and two or more card slots 33 are sequentially arranged in the length direction of the slot 32. The buckles 42 can be inserted into two or more than two clamping grooves 33, so that the effect of multi-fastening is achieved, and the firmness of connection is improved.

The latch 42 is formed with a guiding inclined plane 421, and the guiding inclined plane 421 is used for facilitating the insertion of the latch 42 into the slot 32, so as to facilitate the assembly of the latch 42 into the slot 32.

The guiding inclined plane 421 refers to a plane having an acute angle with the length direction of the elastic latch 41. During the process that the elastic latch 41 is inserted into the slot 32, the guide inclined plane 421 abuts against the outer end of the slot 32, and the rotating shaft 3 forces the elastic latch 41 to be elastically deformed, so that the buckle 42 enters the slot 32.

The first member 1 further comprises a first joint 11, a first shaft hole 111 is formed in the first joint 11, the first joint 11 is arranged at one end of the first clamping plate 12, the second member 2 further comprises a second joint 21, a second shaft hole 211 is formed in the second joint 21, and the second joint 21 is arranged at one end of the second clamping plate 22.

The first joints 11 are a pair, the pair of first joints 11 are provided with first shaft holes 111, the second joint 21 is arranged between the pair of first joints 11, the pair of first joints 11 axially fix the second joint 21 on the first shaft holes 111, and the first member 1 and the second member 2 are positioned mutually.

The first member 1 further comprises a first handle 13, the first joint 11 and the first handle 13 are respectively arranged at two ends of the first clamping plate 12, the second member 2 further comprises a second handle 23, the second joint 21 and the second handle 23 are respectively arranged at two ends of the second clamping plate 22, the rotating shaft 3, the first clamping plate 12 and the first handle 13 are sequentially arranged on the first member 1, the rotating shaft 3, the second clamping plate 22 and the second handle 23 are sequentially arranged on the second member 2, the first handle 13 is provided with a first threading hole 131, and the second handle 23 is provided with a second threading hole 231.

Wherein the first handle 13 is used for being gripped by a user, and the second handle 23 is also used for being gripped by the user, and the user can grip the first handle 13 and the second handle 23 to drive the first member 1 to rotate on the second member 2. The first threading hole 131 and the second threading hole 231 are for the binding band 6 to pass through.

In practical use, the binding band 6 can be threaded through the first threading hole 131 and the second threading hole 231, the first threading hole 131 and the second threading hole 231 can position the binding band 6, the binding band 6 can tightly bind the first handle 13 and the second handle 23 together, and the first clamping plate 12 and the second clamping plate 22 can be locked.

In the present invention, the ratchet mechanism is used to prevent the first clamping plate 12 from being opened on the second clamping plate 22, the binding band 6 can be inserted into the first threading hole 131 and the second threading hole 231 and tie the first handle 13 and the second handle 23 together, and also plays a role of preventing the first clamping plate 12 from being opened on the second clamping plate 22, so as to achieve the effect of double clamping the pipe in the clamping area, and the locking position of the pawl 14 on the ratchet bar 24 can be adjusted, and the length of the binding band 6 between the first handle 13 and the second handle 23 can be adjusted, therefore, the pipe clamp has the advantages of simple structure, double locking and firm connection.

Specifically, if the first splint 12 is folded on the second splint 22, the first threading hole 131 is aligned with the second threading hole 231, and the straight line direction where the first threading hole 131 and the second threading hole 231 are located is located on the outer side of the power arm 16, so as to prevent the power arm 16 from interfering with the passage of the binding band 6 between the first threading hole 131 and the second threading hole 231.

Specifically, the first handle 13 has a plate-like structure, the first clamping plate 12 is disposed at one end of the first handle 13, the first threading hole 131 is disposed at the other end of the first handle 13, and the length direction of the first handle 13 is substantially identical to the length direction of the first clamping plate 12. The second handle 23 also has a plate-like overall structure, the second clamping plate 22 is disposed at one end of the second handle 23, the second threading hole 231 is disposed at the other end of the second handle 23, and the longitudinal direction of the second handle 23 is substantially identical to the longitudinal direction of the second clamping plate 22. If the first clamping plate 12 is folded on the second clamping plate 22, the first handle 13 and the second handle 23 are arranged in bilateral symmetry, so that a user can hold the first handle 13 and the second handle 23 together with one hand.

If bandage 6 wears to locate first through wires hole 131 and second through wires hole 231, bandage 6 is kept away from first splint 12 and second splint 22, has improved the arm of force size between bandage 6 and the pipe fitting, has further improved fastening effect.

When the first clamping plate 12 is folded on the second clamping plate 22, the pawl 14, the ratchet bar 24 and the elastic arm 15 are all arranged between the first handle 13 and the second handle 23, thereby improving the compactness of the structure.

When the power arm 16 is close to the first handle 13, the pawl 14 can disengage the ratchet bar 24. In practical use, the user can grasp the power arm 16 and the first handle 13 with one hand to drive the pawl 14 to disengage the ratchet bar 24, which further facilitates the use.

The first handle 13, the elastic arm 15 and the first clamping plate 12 form a strip-shaped area, and the strip-shaped area formed by the first handle 13, the elastic arm 15 and the first clamping plate 12 is used for enabling the elastic arm 15 to move.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims (8)

1. A pipe clamp, characterized in that it comprises a first member (1), on which first member (1) a second member (2) is hinged;

the first component (1) comprises a first clamping plate (12), the second component (2) comprises a second clamping plate (22), the first clamping plate (12) and the second clamping plate (22) enclose a clamping area, and the integral structure of the first clamping plate and the integral structure of the second clamping plate are in a straight shape;

the first component (1) further comprises a pawl (14) and an elastic arm (15), the second component (2) further comprises a ratchet rack (24), the elastic arm (15) forces the pawl (14) to be meshed on the ratchet rack (24), and the pawl (14), the ratchet rack (24) and the elastic arm (15) form a ratchet mechanism which is used for preventing the first clamping plate (12) from being lifted on the second clamping plate (22);

the power arm (16) is formed on the elastic arm (15), the elastic arm (15) comprises a bending part (151), the elastic arm (15) can elastically deform around the bending part (151), and the bending part (151), the power arm (16) and the pawl (14) are sequentially arranged on the elastic arm (15).

2. A pipe clamp according to claim 1, characterized in that the first clamping plate (12) is formed with a first outer chamfer (121) on both sides and the second clamping plate (22) is formed with a second outer chamfer (221) on both sides.

3. A pipe clamp according to claim 1, characterized in that the first member (1) is hinged to the second member (2) by means of a shaft (3), the first member (1) further comprising a first handle (13), the shaft (3), the first clamping plate (12) and the first handle (13) being arranged in sequence on the first member (1), the second member (2) further comprising a second handle (23), the shaft (3), the second clamping plate (22) and the second handle (23) being arranged in sequence on the second member (2).

4. A pipe clamp according to claim 3, characterized in that the first handle (13) is provided with a first threading hole (131) and the second handle (23) is provided with a second threading hole (231).

5. A pipe clamp according to any one of claims 1-4, characterized in that the power arm (16) is formed with an inwardly concave arc-shaped surface (161), which arc-shaped surface (161) is adapted to fit on a finger of a user.

6. A pipe clamp as claimed in claim 1, characterized in that the pawl (14) has a first ratchet tooth (141) and the ratchet bar (24) has a second ratchet tooth (241), the cross-section of the first ratchet tooth (141) and the cross-section of the second ratchet tooth (241) both being triangular.

7. A pipe clamp according to claim 1, characterized in that the pawl (14) and the resilient arm (15) are formed integrally on the first clamping plate (12) and the ratchet bar (24) is formed integrally on the second clamping plate (22).

8. A pipe clamp according to claim 1, wherein the first member (1) is provided with a first shaft hole (111), the second member (2) is provided with a second shaft hole (211), the first shaft hole (111) and the second shaft hole (211) are provided with a rotating shaft (3) in a penetrating manner, and the first member (1) and the second member (2) are hinged together through the rotating shaft (3).

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