CN210803105U

CN210803105U - Pneumatic stretching clamp

Info

Publication number: CN210803105U
Application number: CN201921648586.7U
Authority: CN
Inventors: 卢军; 钟辛; 石彦奎
Original assignee: Hubei Wan Testing Equipment Co ltd
Current assignee: Hubei Wan Testing Equipment Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-19
Anticipated expiration: 2029-09-29

Abstract

A pneumatic stretching clamp comprises a clamp main body, wherein a clamping groove used for placing a sample is formed in the lower side of the clamp main body, a fixed jaw is fixedly installed on one side in the clamping groove, a movable jaw matched with the fixed jaw and used for clamping the sample is arranged on the other side in the clamping groove, a jaw push rod is connected to one side, opposite to the clamping direction, of the movable jaw, and the movement axis of the jaw push rod is perpendicular to the axis of the clamping groove; the cylinder is fixed on the outer side of the clamp main body, and the axis of a piston push rod of the cylinder is perpendicular to the axis of the clamping groove; the fulcrum of the lever is hinged to the clamp body, the power action point of the lever is hinged to a piston push rod of the cylinder, and the resistance action point of the lever is hinged to a jaw push rod. The utility model facilitates the rapid clamping of the sample, greatly saves the clamping time, reduces the labor force and improves the efficiency; and because the movable jaw moves relative to the fixed jaw, the central axis of the sample and the central line of the clamp are kept coincident, and the test effect is effectively ensured.

Description

Pneumatic stretching clamp

Technical Field

The utility model relates to a wide strip geosynthetic material's tensile anchor clamps field, concretely relates to pneumatic tensile anchor clamps.

Background

At present, when carrying out the test of wide strip geosynthetic material tensile properties, what the clamping device for step up wide strip geosynthetic material generally adopted is screw rod top tight structure, it has three pairs of screw rods to have along its tightening direction interval distribution promptly in the anchor clamps main part, with through all ejector pins of locking in the clamping process, thereby realize the step up to step up wide strip geosynthetic material, so not only the work efficiency of centre gripping is low, need lock the regulation to every screw rod, it is long promptly consuming time, and owing to adopt the multiple spot to step up, hardly guarantee the coincidence of sample axis and anchor clamps central line, thereby experimental effect has been influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the above-mentioned problem that prior art exists, provide one kind and improve work efficiency, and guarantee the pneumatic tensile anchor clamps of experimental effect.

In order to achieve the above object, the utility model provides a pneumatic stretching clamp, include:

the clamp comprises a clamp main body, wherein a clamping groove for placing a sample is formed in the lower side of the clamp main body, a fixed jaw is fixedly installed on one side in the clamping groove, a movable jaw matched with the fixed jaw for clamping the sample is arranged on the other side in the clamping groove, a jaw push rod is connected to one side, opposite to the clamping direction, of the movable jaw, and the movement axis of the jaw push rod is perpendicular to the axis of the clamping groove;

the cylinder is fixed on the outer side of the clamp main body, and the axis of a piston push rod of the cylinder is perpendicular to the axis of the clamping groove;

the fulcrum of the lever is hinged to the clamp body, the power action point of the lever is hinged to the piston push rod of the cylinder, and the resistance action point of the lever is hinged to the jaw push rod.

As a further preferred technical scheme of the utility model, regular jaw and movable vice jaw by the vice jaw seat with install in take tooth on the vice jaw seat and keep silent and constitute, take the back of keeping silent with keep silent the seat laminating, take the front of keeping silent to be equipped with a plurality of racks, regular jaw keep silent through it keep silent the seat in press from both sides tight groove one side with anchor clamps main part fixed connection, movable vice jaw keep silent through it keep silent the seat in press from both sides tight groove one side with keep silent the push rod and connect.

As a further preferred technical scheme of the utility model, the back of taking the tooth to keep silent still is equipped with positioning pin axle, keep silent be equipped with on the seat with positioning pin axle complex locating hole, the pincers mouth seat with take the tooth and still be equipped with powerful magnet between keeping silent, take the tooth keep silent with the pincers mouth seat passes through powerful magnet attracts in order to realize closely laminating.

As a further preferred technical scheme of the utility model, the cylinder pass through cylinder mounting panel fixed mounting in the outside of anchor clamps main part, and the quantity of cylinder is two, two the cylinder is pressed the length direction of pressing from both sides tight groove arranges and distributes, every the cylinder is each to correspond a lever of connection, and two the lever transmission respectively is connected as for same movable vice jaw.

As a further preferred technical scheme of the utility model, be equipped with the governing valve in the gas circuit of cylinder, so that two the cylinder passes through the control of governing valve realizes the synchronization action.

As a further preferred technical scheme of the utility model, the lever be vertical articulate in the anchor clamps main part, the power action point of lever is located the upper arm top of lever, the resistance action point of lever is located the underarm top of lever.

As a further preferred technical scheme of the utility model, be located in the anchor clamps main part the upper portion of pressing from both sides tight groove is equipped with horizontal shaft hole, the piston push rod of cylinder passes the shaft hole with the power action point of lever is articulated.

As a further preferred technical scheme of the utility model, be located in the anchor clamps main part the lever activity groove has been seted up on the lateral wall of activity keep silent place side, the lever activity inslot is equipped with the rotation round pin axle, the lever is located the lever activity inslot and with the rotation round pin axle is articulated, the rotation round pin axle with articulated portion of lever does the fulcrum of lever.

The pneumatic stretching clamp of the utility model provides the driving force by the cylinder, the driving force acts on the movable jaw after being amplified by the lever so as to achieve the clamping effect, thereby facilitating the rapid clamping of the sample, greatly saving the clamping time, reducing the labor force and improving the efficiency; and because the movable jaw moves relative to the fixed jaw, namely the movable jaw is driven to be tightened at one side, the central axis of the sample and the central line of the clamp are kept coincident, and the test effect is effectively ensured.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic structural view of an example provided by the pneumatic stretching clamp of the present invention;

FIG. 2 is a partial cross-sectional view of FIG. 1;

fig. 3 is an exploded view of the movable jaw or the fixed jaw.

In the figure: 1. the clamp comprises a clamp main body, 2, a cylinder, 3, a lever, 4, a fixed jaw, 5, a movable jaw, 6, a piston push rod, 7, a rotating pin shaft, 8, a jaw push rod, 9, a jaw seat, 10, a toothed jaw, 11, a positioning pin shaft, 12, a positioning hole, 13 and a strong magnet.

The purpose of the present invention is to provide a novel and improved method and apparatus for operating a computer.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description. In the preferred embodiments, the terms "upper", "lower", "left", "right", "middle" and "a" are used for the sake of clarity only, and are not intended to limit the scope of the invention, its relative relationship between the terms and their derivatives, and the scope of the invention should be understood as being limited by the claims.

The pneumatic tensile fixture shown in fig. 1 to 3 is used for clamping one end of a sample such as a wide geosynthetic material during tensile property test of the sample, so that the tensile property test of a tensile testing machine to be tested can be better performed, and the pneumatic tensile fixture comprises:

the clamp comprises a clamp main body 1, wherein a clamping groove for placing a sample is formed in the lower side of the clamp main body 1, a fixed jaw 4 is fixedly installed on one side in the clamping groove, a movable jaw 5 matched with the fixed jaw 4 for clamping the sample is arranged on the other side in the clamping groove, a jaw push rod 8 is connected to one side, opposite to the clamping direction, of the movable jaw 5, and the movement axis of the jaw push rod 8 is perpendicular to the axis of the clamping groove;

the cylinder 2 is fixed on the outer side of the clamp main body 1, and the axis of the piston push rod 6 of the cylinder 2 is vertical to the axis of the clamping groove;

the lever 3, the fulcrum of lever 3 articulates in anchor clamps main part 1, the power action point of lever 3 is articulated with piston push rod 6 of cylinder 2, the resistance action point of lever 3 is articulated with the push rod 8 of keeping silent, so that enlarge the effort of cylinder 2 through lever 3, lever 3 transmits this effort to activity keep silent 5 through keeping silent push rod 8, thereby realize driving activity keep 5 of keeping silent and step up the sample or loosen, adopt 3 structure principle of lever to enlarge and add the holding power, it is inefficient to have solved current clamping device, the problem of the operation complicacy, and step up for the unilateral drive, make sample axis and anchor clamps central line keep coinciding, effectively guaranteed the experimental effect.

The fixed jaw 4 and the movable jaw 5 are composed of a jaw seat 9 and a toothed jaw 10 installed on the jaw seat 9, the back of the toothed jaw 10 is attached to the jaw seat 9, a plurality of racks are arranged on the front of the toothed jaw 10, the toothed jaw 10 can be used for increasing the friction force during tightening, the fixed jaw 4 is fixedly connected with the clamp main body 1 through the jaw seat 9 on one side of a clamping groove, and the movable jaw 5 is connected with the jaw push rod 8 through the jaw seat 9 on one side of the clamping groove.

The back of taking tooth to keep silent 10 still is equipped with positioning pin axle 11, keeps silent and is equipped with on the seat 9 of keeping silent with positioning pin axle 11 complex locating hole 12, keeps silent and still is equipped with powerful magnet 13 between seat 9 and the tooth is kept silent 10, takes tooth to keep silent 10 and keep silent the seat 9 and attract through powerful magnet 13 in order to realize closely laminating, because take tooth to keep silent 10 to need loaded down with trivial details change, can effectually solve through magnetic force absorption and keep silent the loaded down with trivial details problem of changing, the tooth of being convenient for is kept silent 10 dismantlement and.

In specific implementation, the cylinders 2 are fixedly arranged on the outer side of the clamp main body 1 through cylinder mounting plates, the number of the cylinders 2 is two, the two cylinders 2 are arranged and distributed in the length direction of the clamping groove, each cylinder 2 is correspondingly connected with one lever 3, the two levers 3 are respectively connected to the same movable jaw 5 in a transmission manner, and the two cylinders 2 are adopted, so that enough driving force is ensured. The air passages of the cylinders 2 are provided with speed regulating valves, so that the two cylinders 2 can realize synchronous action through the control of the speed regulating valves.

In the concrete implementation, lever 3 is vertical hinge joint in anchor clamps main part 1, and the power action point of lever 3 is located the upper arm top of lever 3, and the resistance action point of lever 3 is located the lower arm top of lever 3.

In specific implementation, a transverse shaft hole is formed in the upper portion, located in the clamping groove, of the clamp body 1, a piston push rod 6 of the cylinder 2 penetrates through the shaft hole to be hinged to a power action point of the lever 3, a lever movable groove is formed in the side wall, located on the side where the movable jaw 5 is located, of the clamp body 1, a rotating pin shaft 7 is arranged in the lever movable groove, the lever 3 is located in the lever movable groove and hinged to the rotating pin shaft 7, the hinged portion of the rotating pin shaft 7 and the lever 3 serves as a fulcrum of the lever 3, and therefore the piston push rod 6 of the cylinder 2 and the lever 3 are partially hidden in the clamp body 1 respectively.

The pneumatic stretching anchor clamps of this embodiment, it provides drive power by cylinder 2, thereby this drive power is acted on movable vice jaw 5 after enlargiing through lever 3 and is reached the centre gripping effect, make things convenient for the quick clamping of sample, can save the clamping time greatly, reduce the labour, raise the efficiency, moreover, because movable vice jaw 5 is that relative fixed vice jaw 4 moves, unilateral drive steps up promptly for sample axis keeps the coincidence with the anchor clamps central line, thereby effectively guaranteed experimental effect.

Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these are merely examples and that many changes and modifications may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims.

Claims

1. A pneumatic stretching clamp, comprising:

2. The pneumatic stretch clamp according to claim 1, wherein the fixed jaw and the movable jaw are each composed of a jaw seat and a toothed jaw mounted on the jaw seat, a back surface of the toothed jaw is attached to the jaw seat, a front surface of the toothed jaw is provided with a plurality of racks, the fixed jaw is fixedly connected to the clamp body at one side of the clamping groove through the jaw seat, and the movable jaw is connected to the jaw push rod at one side of the clamping groove through the jaw seat.

3. The pneumatic stretching clamp as claimed in claim 2, wherein a positioning pin shaft is further provided on the back of the toothed jaw, a positioning hole is provided on the jaw seat to be engaged with the positioning pin shaft, a strong magnet is further provided between the jaw seat and the toothed jaw, and the toothed jaw and the jaw seat are attracted by the strong magnet to achieve tight attachment.

4. The pneumatic stretching clamp as claimed in claim 3, wherein the number of the cylinders is two, the two cylinders are arranged and distributed along the length direction of the clamping groove, each cylinder is correspondingly connected with a lever, and the two levers are respectively connected to the same movable jaw in a transmission manner.

5. The pneumatic stretching clamp of claim 4, wherein a speed regulating valve is arranged in the air path of the air cylinder, so that the two air cylinders can realize synchronous action through the control of the speed regulating valve.

6. The pneumatic stretch clamp of claim 1, wherein the lever is vertically hinged to the clamp body, the lever having a point of action for power at an upper arm top end of the lever and a point of action for resistance at a lower arm top end of the lever.

7. The pneumatic stretching clamp as claimed in claim 6, wherein the clamp body is provided with a transverse shaft hole at the upper part of the clamping groove, and the piston push rod of the cylinder passes through the shaft hole to be hinged with the power action point of the lever.

8. The pneumatic stretching clamp as claimed in any one of claims 1 to 7, wherein a lever moving groove is formed in a side wall of the clamp body on the side of the movable jaw, a rotating pin shaft is arranged in the lever moving groove, the lever is located in the lever moving groove and hinged to the rotating pin shaft, and a hinged portion of the rotating pin shaft and the lever is a fulcrum of the lever.