CN201107241Y

CN201107241Y - Shearing container of straight snip instrument

Info

Publication number: CN201107241Y
Application number: CNU2007200426226U
Authority: CN
Inventors: 方舜祥
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-19
Filing date: 2007-11-19
Publication date: 2008-08-27
Anticipated expiration: 2017-11-19

Abstract

The utility model relates to a shearing vessel of a direct shear apparatus, which comprises a water storage box, an upper shearing box, a lower shearing box, a pressure transmitting plate and a positioning pin, wherein, the upper shearing box and the lower shearing box are vertically and mutually aligned and arranged in the water storage box, the positioning pin penetrates through the upper shearing box and the lower shearing box, ensuring the upper shearing box and the lower shearing box to be mutually aligned and locked, and the external diameter of the pressure transmitting plate and the internal diameters of the upper and the lower shearing boxes are mutually matched; a circular dummy club is arranged at the lower center of the water storage box, and the diameter of the dummy club is mutually matched with the internal diameter of the lower shearing box; mutually matched dovetail grooves are arranged at two corresponding side edges on the outer edges at the lower part of the upper shearing box and two corresponding side edges on the outer edges at the top part of the lower shearing box. The shearing vessel of the direct shear apparatus of the utility model has the advantages that the shearing vessel is endurable, not inclined to be rusted, convenient for the disassembly, the soil borrowing and the soil sample residue cleaning, and favorable for enhancing the precision of experimental data, the operation is simple, and the cost is lower.

Description

The shearing container of direct shear apparatus

Technical field

The utility model relates to a kind of parts of direct shear apparatus, relates in particular to the shearing container in the direct shear apparatus.

Background technology

Direct shear apparatus is a kind of instrument that is used to measure the shearing strength of soil sample under the quiescent load condition.Mainly apply member, annex etc. by shearing container, vertical loading member, shearing force and form, synoptic diagram is seen Fig. 1.Traditional shearing container, comprise water storage case 1, go up shear box 2, down cut box 3 and pressure transmission plate 4, it all is the cast copper material, and down cut box 3 is fixed in the water storage case 1, the surface of contact of last shear box 2 and down cut box 3 is a smooth flat, and last shear box 2 and down cut box 3 are by 2 or 4 screw latch alignment lockings.During measurement, to go up shear box 2 and down cut box 3 consistencies from top to bottom earlier, insert the screw latch with shear box about the locking, installing soil sample in the shear box up and down, with pressure transmission plate 4 soil sample is pushed in the shear box, by the time when soil sample reaches fixed the requirement, the screw latch of back-outing, shear box issues the unboiled water prosposition in the opposite pressure at right angle of direction respectively and moves up and down, soil sample is sheared, shear stress when this moment, shearing force calculation element 6 and shear displacemant measurement mechanism 7 can be measured soil sample destruction is determined the shear strength of soils coefficient according to Coulomb's law then, data such as angle of internal friction and cohesiveness.At first, traditional shearing container is owing to employing cast copper material, so insufficient strength, in use corrosion easily.Secondly, because down cut box 3 is fixed in the water storage case 1, therefore after finishing a soil sample measurement, easy-clear is incomplete for the soil sample residue of down cut box 3 inside.And the surface of contact of last shear box 2 and down cut box 3 is a smooth flat, and up and down the vertical force that applies of shear box is fully in opposite directions the time to it when direct shear apparatus, and the displacement of shear box does not become horizontal linear up and down, thereby causes the shear stress error that records bigger.And shear box need to use 2 or 4 screw latches, so the experimentation operation is loaded down with trivial details when locking up and down.

Summary of the invention

Goal of the invention: technical problem to be solved in the utility model provides a kind of shearing container of direct shear apparatus, and low to overcome tradition shearing container precision, complex operation and soil sample residue are removed incomplete problem.

Technical scheme: the shearing container of direct shear apparatus of the present utility model, comprise water storage case, go up shear box, down cut box, pressure transmission plate and register pin, last shear box and down cut box consistency from top to bottom, place water storage case, register pin passes shear box and down cut box, make to go up the locking of aliging of shear box and down cut box, the external diameter of pressure transmission plate matches with the internal diameter of shear box up and down; The water storage case bottom center has a round boss, and the diameter of this boss matches with the internal diameter of down cut box; Two relative sides of outer, last shear box bottom and two relative sides of outer, down cut box top have the dovetail groove that cooperatively interacts.

Wherein, the described length that goes up the dovetail groove of shear box is 50mm～60mm.

Wherein, the described shear box of going up has a rectangular opening in the outer on the limit adjacent with dovetail groove disappearance part.

Wherein, the described dovetail groove of going up shear box forms two grooves in the junction of bottom surface and side.

Wherein, described register pin is 1.

Wherein, the described outside of going up shear box can be fixed with handle.

Wherein, above-mentioned all material is all made by stainless steel material.

Beneficial effect: the shearing vessel of direct shear apparatus of the present utility model has following advantage:

1, since up and down shear box adopt the design of the dovetail groove that cooperatively interacts, therefore be subjected to displacement the direction of automatically calibrating shearing force, thereby guarantee that the shearing force direction is accurate at shear box up and down, help improving data precision.

2, since up and down shear box adopt the design of the dovetail groove that cooperatively interacts, therefore only need a register pin, can realize the alignment locking of shear box up and down, easy and simple to handle, also reduced the production cost of shear box.

3, use dovetail groove and single register pin the time and promptly can guarantee the right alignment of shear box center hole up and down.

4, shear box matches with the boss diameter of water storage case by the internal diameter that dovetail groove joins together up and down, finishes normal experiment, and the down cut box do not need to be fixed on the water storage case, and is for convenience detach, fetch earth and remove the soil sample residue.

5, shear container and adopt stainless steel material to make, compare conventional cast copper material, have durablely, be difficult for the advantage of corrosion, and price is lower than copper casting.

Description of drawings

Fig. 1 is the direct shear apparatus synoptic diagram.

Fig. 2 is the sectional view of the shearing container of the utility model direct shear apparatus.

Fig. 3 a is the vertical view of water storage case.

Fig. 3 b is that the A of water storage case is to cut-open view.

Fig. 4 a is the vertical view of down cut box.

Fig. 4 b is that the B of down cut box is to cut-open view.

Fig. 5 a is the upward view of last shear box.

Fig. 5 b is that the C of last shear box is to cut-open view.

Fig. 5 c is that the D of last shear box is to cut-open view.

Fig. 6 is the I portion enlarged drawing of last shear box dovetail groove.

Embodiment

As shown in Figure 2, the shearing container of direct shear apparatus of the present utility model, comprise water storage case 1, go up shear box 2, down cut box 3, pressure transmission plate 4 and register pin 5, last shear box 2 and down cut box 3 consistencies from top to bottom, place 1, one register pin 5 of water storage case to pass shear box 2 and down cut box 3, make to go up the locking of aliging of shear box 2 and down cut box 3, the external diameter of pressure transmission plate 4 matches with the internal diameter of shear box 2,3 up and down; Two relative sides of outer, last shear box 2 bottom and two relative sides of outer, down cut box 3 top have the dovetail groove that cooperatively interacts; The outside of shear box 3 is fixed with handle 6, the convenient taking-up of shear box up and down.

Fig. 3 a and 3b can see clearly that the water storage case bottom center has a round boss, the diameter of this boss matches with the internal diameter of down cut box 3, when making that shear box 3 is engaged on the boss instantly, played positioning action again, therefore the boss fixing screw of down cut box in the alternative shearing container of the prior art fully, both saved processing cost, reached for convenience detach again, fetch earth and removed the purpose of soil sample residue.

Fig. 4 a, 4b and 4c can see, the groove that matches with dovetail groove on the last shear box 2 is arranged on the down cut box 3.

By Fig. 5 a, 5b and 5c as can be known, the length of the dovetail groove of last shear box 2 is not identical with the length of side of last shear box 2, and be 50mm～60mm, promptly be to go up about 1/3 of shear box 2 length of sides, so both reduced the experimental error that friction force is brought, guaranteed that again shear box can move horizontally stably up and down in the process of displacement, do not upwarped phenomenon.

In addition, as can be known, last shear box 2 is in the outer on the limit adjacent with dovetail groove disappearance part from Fig. 5 a, 5b, promptly goes up the outer on the limit that shear box 2 may touch mutually with water storage case 1 when being subjected to displacement, one rectangular opening is arranged, can avoid shear box 2 to touch mutually like this with water storage case 1.Having under the situation of opening, saturated shearing can so more can be done slightly than the top height of down cut box 3 in the top of water storage case 1.

By the I portion enlarged drawing 6 of last shear box dovetail groove as can be known, the dovetail groove of shear box 2 has two grooves 7 in the junction of bottom surface and side, and the contact of shear box up and down at the dovetail groove place that makes forms linear contact, reduced friction force, improved data accuracy.

The above is sheared all parts of container and all uses the stainless steel material manufacturing, and water storage case 1 utilizes mold to carry out the production of standard stability.

During use, the dovetail groove of last shear box 2 is pushed in the groove of down cut box 3, again register pin 5 is inserted in the apertures of location, so that shear box alignment locking up and down.Shear box up and down is engaged on the boss of water storage case 1, after the soil sample of packing into, will shears container and be contained on the surveying instrument.After each parts of instrument are adjusted, register pin is extracted, carry out shearing experiment.After finishing using, the handle in the utilization on the shear box just can take out shear box up and down together, removes soil sample.

The shearing container of direct shear apparatus of the present utility model adopts the size of GB regulation, as the shearing container parts of measuring in the soil sample cut resistance test instrument, comprises strain direct shear apparatuses such as strain control type direct shear apparatus, electronic tetrad or the like applicable to any.

Claims

1, a kind of shearing container of direct shear apparatus, comprise water storage case (1), last shear box (2), down cut box (3), pressure transmission plate (4) and register pin (5), last shear box (2) and down cut box (3) consistency from top to bottom, place water storage case (1), register pin (5) passes shear box (2) and down cut box (3), make shear box (2) and down cut box (3) alignment locking, the external diameter of pressure transmission plate (4) matches with the internal diameter of shear box up and down, it is characterized in that: water storage case (1) bottom center has a round boss, and the diameter of this boss matches with the internal diameter of down cut box (3); Two relative sides of outer, last shear box (2) bottom and two relative sides of down cut box (3) outer, top have the dovetail groove that cooperatively interacts.

2, the shearing container of direct shear apparatus according to claim 1 is characterized in that the described length that goes up the dovetail groove of shear box (2) is 50mm～60mm.

3, the shearing container of direct shear apparatus according to claim 2 is characterized in that the described shear box (2) of going up has a rectangular opening in the outer on the limit adjacent with dovetail groove disappearance part.

4,, it is characterized in that the dovetail groove of shear box (2) forms two grooves (7) in the junction of bottom surface and side according to the shearing container of claim 1,2 or 3 described direct shear apparatuses.

5, the shearing container of direct shear apparatus according to claim 4 is characterized in that described register pin (5) is 1.

6,, it is characterized in that described register pin (5) is 1 according to the shearing container of claim 1,2 or 3 described direct shear apparatuses.

7, the shearing container of direct shear apparatus according to claim 1 is characterized in that the described outside of going up shear box (3) is fixed with handle (6).

8, the shearing container of direct shear apparatus according to claim 1 is characterized in that described shearing container adopts the stainless steel material manufacturing.