CN201143433Y

CN201143433Y - Crucible clamp

Info

Publication number: CN201143433Y
Application number: CNU2007201711326U
Authority: CN
Inventors: 周维; 谢斌权; 荣磊
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2007-11-28
Filing date: 2007-11-28
Publication date: 2008-11-05
Anticipated expiration: 2017-11-28

Abstract

The utility model relates to a crucible tongs, which comprises a left tong handle, a right tong handle and a shaft part articulating the middle parts of the left and right tong handles together. The left and right tong handle parts at the front end of the shaft part are connected with a tong mouth that can clamp article; wherein, the tong mouth can be disassembly-connected with the left and right tong handles; the tong mouth adapting to the heating vessel to be clamped can be replaced according to the shape and size of the vessel to be clamped for heating, so as to meet the requirements for clamping different shapes and sizes of heating vessels.

Description

A kind of crucible tongs

Technical field

The utility model relates to a kind of laboratory clamping device, relates in particular to a kind of crucible tongs that are used for the heating vessel of the various appearance and sizes of clamping under hot environment in the laboratory.

Background technology

The general service of crucible tongs is to be used for clamping crucible heating, or takes, puts crucible in thermal source (as: gas lamp, high temperature furnace, moderate oven or the like), or is used for the evaporating dish and the crucible cover of gripping heat; At present, general crucible tongs have long handle, the front end of this long handle has a circular-arc jaw, because crucible tongs generally all use in the experiment that needs heat-flash, the long handle material of crucible tongs adopts can resistant to elevated temperatures metal material, as iron or copper alloy or the like, and the long handle chrome-faced or the nickel of crucible tongs, the long handle that crucible tongs extend just has the effect of cooling, makes the unlikely scald of operator.The general occupation mode of crucible tongs has two kinds: a kind of mode is come gripping crucible cover or sidewall of crucible foremost for the jaw that uses crucible tongs, and another way is for then getting the crucible body for the holder of use curvature portion; Adopt the second way when in use, generally getting the crucible body; In middle high temperature furnace, use crucible tongs, the operator is faced with high-temperature operation, when crucible is got in blow-on, extreme temperatures in the stove, the operator must guarantee to take out crucible at short notice, otherwise not only the centering high temperature furnace has infringement, because the operating time is long, also can bring by harm such as scalding, burn the operator, this just requires the clamping device must handled easily, can be accurate and clamping target rapidly.

Publication number " CN 2535189 " name is called " how with plug boring pincers " and discloses a kind of metal tweezers that is used for clamping heating vessel under hot environment in the laboratory in China's utility model application prospectus, this kind metal tweezers, mainly comprise: a pair of caliper that comprises mutual symmetry, the two ends of caliper are respectively pincers handle and jaw, there is a connecting hole in the caliper stage casing, there is a little axle that a pair of caliper is connected in the connecting hole, finger-hole is held in the pincers shank rear end of caliper, it is characterized in that having small one and large one pincers recessed in the associated jaw portion of caliper, two pincers are recessed all inwards, the recessed nearly little axle of tong, the recessed nearly jaw of small forceps; This kind font has following two shortcomings:

1 because the jaw of this kind metal pincers cannot be changed, and therefore, can not satisfy the crucible of the jaw radian of its caliper to the side curvature, clamping inconvenience, and too small crucible can not clamping; Excessive crucible, because contact-making surface is little, frictional force is little, and easily rock, easily landing, dangerous, because operation inconvenience, increased the operating time greatly, also increased the danger that the operator is scalded, burns greatly, because crucible tongs are lazy tongs, the pincers shank portion has occupied more raw material, for the jaw of selecting circular arc to vary in size, and select many set crucible pincers, not only brought the waste on the raw material, a plurality of length and big crucible tongs have also taken more lab space, manageability does not cause the wasting of resources, brings more financial burden to the laboratory yet.

2 owing to high-temperature operation, and the operator must wear asbestos gloves, but asbestos gloves is often excessive, can not cooperate preferably with metal pincers handle, brings great inconvenience to the operator; The operator has on excessive asbestos gloves, holds less relatively pincers shank portion, just is easy to that crucible is come off or can not successfully finishes and uphold action, thereby be difficult to clamping crucible smoothly and exactly, operate slow, the unlimited overlong time of high temperature furnace fire door in making; Because the temperature in the stove is very high, very big with the external environment temperature difference, energy exchange is very rapid, thereby brings the more energy loss, and the harm of this centering high temperature furnace is very big; Moreover, because the operator faces the overlong time of high-temperature region, increased greatly by the danger of scalding, burning; After the metal pincers are finished using, be placed on one side, in a period of time, can not dispel the heat fully, and remain on the higher temperature state; Naked hand has contacted metal pincers handle to the operator if leave behind asbestos gloves accidentally, is then very easily scalded, burns.

The utility model content

The technical problems to be solved in the utility model provides the convenient and crucible tongs of the heating vessel of the various appearance and sizes of clamping exactly of a kind of energy.

Goal of the invention of the present utility model is achieved through the following technical solutions:

A kind of crucible tongs of the present utility model, comprise: left side pincers handle, the right hinged axial region in middle part that clamps handle and a left side is clamped handle, right pincers handle, but the left and right pincers shank portion of the front end of this axial region is connected with the jaw of gripping objects, and wherein, this jaw removably connects with left side pincers handle, right pincers handle; Jaw and left and right pincers handle adopt the mode that removably connects, and can change the jaw that adapts with it according to the appearance and size for the treatment of the clamping heating vessel, with the needs of the heating vessel that adapts to the different appearance and sizes of clamping.

Further, described jaw has and treats the clamping circular arc that clamping heating vessel appearance matches.

On the said structure basis, wherein:

Described jaw clamps handle by being threaded with left side pincers handle, the right side.

Described jaw and left and right pincers handle junction are provided with connecting thread; Described left and right pincers handle has the retaining thread that cooperates with this connecting thread with the jaw junction.

A kind of improvement as such scheme: described jaw and left and right pincers handle junction are provided with first connecting thread, described left and right pincers handle and jaw junction have second connecting thread, and described crucible tongs also comprise the thread cap that is connected with described first connecting thread and second connecting thread.

On the said structure basis, be provided with thermal insulation layer for operator's gripping place on the described left and right pincers handle; Because adopted thermal insulation layer, operator can not be with the naked hand contact of asbestos gloves pincers handle, the degree of tightness that can better feel to hold the pincers handle prevents the crucible tongs landing; And because there be not stopping of asbestos gloves, operator's hand can be arbitrarily crooked, makes things convenient for the clamping operation; Stopped the operator and dispelled the heat when incomplete contact pincers handle accidentally by the generation of the situation of scald at crucible tongs.

Described thermal insulation layer is an insulating layer of asbestos.

A kind of crucible tongs of the present utility model, but employing connects the mode of the jaw of gripping objects removably at the left and right pincers shank portion of the front end of crucible tongs axial region, can change the jaw adapt with it according to the appearance and size for the treatment of the clamping heating vessel, with convenient and adapt to the needs of the heating vessel of the different appearance and sizes of clamping accurately; Further, can be provided with thermal insulation layer for operator's gripping place on left and right handle, owing to adopted thermal insulation layer, operator can not be with the naked hand contact of asbestos gloves pincers handle, the degree of tightness that can better feel to hold the pincers handle prevents the crucible tongs landing; And because there be not stopping of asbestos gloves, operator's hand can be arbitrarily crooked, makes things convenient for the clamping operation; Stopped the operator and dispelled the heat when incomplete contact pincers handle accidentally by the generation of the situation of scald at crucible tongs.

Description of drawings

In order to be easy to explanation, the utility model is done to describe in detail by following preferred embodiment and accompanying drawing.

Fig. 1 is the overall schematic views of a kind of crucible tongs specific embodiment of the utility model;

Fig. 2 is the left and right pincers shank portion schematic diagram of a kind of crucible tongs specific embodiment of the utility model.

Fig. 3 is the jaw part schematic diagram of novel a kind of crucible tongs specific embodiment

The specific embodiment

See also Fig. 1 to shown in Figure 3, a kind of crucible tongs of the present utility model, comprise: left side pincers handle 4, the right hinged axial region 2 in middle part that clamps handle 3 and a left side is clamped handle 4, right pincers handle 3, but the left and right pincers shank portion of the front end of this axial region is connected with the jaw 5 of gripping objects, wherein, this jaw 5 removably connects with left side pincers handle 4, right pincers handle 3; The mode that employing removably connects can be changed the jaw adapt with it according to the appearance and size for the treatment of the clamping heating vessel, with the needs of the heating vessel that adapts to the different appearance and sizes of clamping.

Jaw 5 has and treats the clamping circular arc 51 that clamping heating vessel (not shown) appearance matches.

Jaw described in this specific embodiment 5 is provided with first connecting thread 52 with left and right pincers handle 4,3 junctions, described left and

right pincers handle

4,3 and jaw junction have second connecting thread 6, and described crucible tongs also comprise the thread cap 1 that is connected with described first connecting thread 52 and second connecting thread 6; Realized that by this thread cap 1 handle 4 is clamped on a jaw 5 and a left side, removably connecting of handle 3 clamped on the right side, the thread cap 1 in this specific embodiment has two.

In this specific embodiment, be provided with thermal insulation layer 7 for operator gripping place on the described left and

right pincers handle

4,3, this thermal insulation layer 7 is wrapped in by parcel respectively to have certain thickness asbestos on the left and

right pincers handle

4,3 and constitutes; Because adopted thermal insulation layer, operator can not be with the naked hand contact of asbestos gloves pincers handle, the degree of tightness that can better feel to hold the pincers handle prevents the crucible tongs landing; And because there be not stopping of asbestos gloves, operator's hand can be arbitrarily crooked, makes things convenient for the clamping operation; Stopped the operator and dispelled the heat when incomplete contact pincers handle accidentally by the generation of the situation of scald at crucible tongs.

Crucible tongs in this specific embodiment in use, the operator selects the jaw 5 corresponding with it according to the appearance and size for the treatment of the clamping heating vessel earlier, open high temperature furnace or moderate oven door, open left and

right pincers handle

4,3, jaw 5 is placed in the outside for the treatment of the clamping heating vessel, close tight left and right pincers handle 4,3 again, make clamping circular arc 51 clampings of jaw 5 treat the clamping heating vessel, the operator is pressed from both sides the from heater core ware rapidly; After finishing using, put this crucible tongs, be allowed to condition under the room temperature and dispel the heat; After heat radiation finishes, jaw 5 is backed out from thread cap 1, again thread cap 1 is backed out from left and

right pincers handle

4,3.

The specific embodiment of the above is a better embodiment of the present utility model, be not to limit concrete practical range of the present utility model with this, for example, jaw 5 with about the thread connecting mode of

pincers handle

4,3 can adopt: be provided with connecting thread at described jaw and left and right pincers handle 4,3 junctions; Realize with the mode that the jaw junction has the retaining thread that cooperates with this connecting thread that at described left and right pincers handle 4,3 equivalence that all shapes according to the utility model, structure are done changes all in protection domain of the present utility model.

Claims

1. crucible tongs, comprise: left side pincers handle, the right hinged axial region in middle part that clamps handle and a left side is clamped handle, right pincers handle, but the left and right pincers shank portion of the front end of this axial region is connected with the jaw of gripping objects, it is characterized in that: this jaw removably connects with left side pincers handle, right pincers handle.

2. a kind of crucible tongs according to claim 1 is characterized in that: described jaw has and treats the clamping circular arc that clamping heating vessel appearance matches.

3. a kind of crucible tongs according to claim 1 and 2 is characterized in that: described jaw clamps handle by being threaded with left side pincers handle, the right side.

4. a kind of crucible tongs according to claim 3 is characterized in that: described jaw and left and right pincers handle junction are provided with connecting thread; Described left and right pincers handle has the retaining thread that cooperates with this connecting thread with the jaw junction.

5. a kind of crucible tongs according to claim 3, it is characterized in that: described jaw and left and right pincers handle junction are provided with first connecting thread, described left and right pincers handle and jaw junction have second connecting thread, and described crucible tongs also comprise the thread cap that is connected with described first connecting thread and second connecting thread.

6. a kind of crucible tongs according to claim 1 is characterized in that: be provided with thermal insulation layer for operator's gripping place on the described left and right pincers handle.

7. a kind of crucible tongs according to claim 6 is characterized in that: described thermal insulation layer is an insulating layer of asbestos.