CN217122901U - Clamping device - Google Patents

Abstract

The utility model discloses a clamping device, including the anchor clamps body, an at least dish spring, direction pressure head, guide ring, slip pressure head, slip round pin, connecting rod, handle, fixed connection round pin, swing joint round pin, housing, the anchor clamps body divide into anchor clamps body main part, guide part and sliding part the inside cylinder recess of transversely seting up of guide part, the dish spring with the guide ring all place in the cylinder recess. The utility model discloses lay in the counterflange both sides, upwards push away the handle, the motion of slip pressure head makes the slip round pin the swing joint round pin with the fixed connection round pin is located a straight line, presss from both sides tightly counterflange. The utility model discloses a dish spring is as elastic element, can obtain great pretightning force, and is more convenient than traditional flange bolted connection fast, and the accessible is a plurality of the series connection of dish spring, different stack modes such as parallelly connected, series-parallel connection increase or reduce the pretightning force demand of different occasions is realized to dish spring number.

Description

Clamping device

Technical Field

The utility model relates to a gas pipeline carries the field, concretely relates to flange joint technical field, more specifically says so and relates to a clamping device.

Background

The pipeline is the most common conveying equipment, and in the manufacturing process of the gas pipeline, the pipeline can be put into use after the pipeline is welded and the airtightness inspection and the pressure test are required to be carried out. The connection of the pipelines requires pipeline connecting pieces which can butt the connected pipelines together and ensure that the joints are completely sealed. In the prior art, a flange is widely applied to the field of machinery as a connecting piece. The pipes can be well connected by a pair of mutually matched flanges. The two ends of the gas pipeline are generally provided with the following two structural forms, the two structural forms are marked with a butt flange or a sealing flange with a plug, and the connection modes of the two flange forms in the actual use process are basically consistent.

The gas pipeline is connected by a flange plate and a flange bolt. The flanges are connected with each other through the corresponding mounting holes and connecting pieces such as flange bolts. The connection mode has the problems that firstly, the small flange is provided with 6-8 flange bolts, the large flange is provided with 16-32 or more flange bolts, and operators consume more time and physical power to complete flange connection work in the actual bolt tightening process; secondly, the connection cannot be completely sealed, and a gap between two flange pieces is easy to cause leakage and cannot have high sealing performance; thirdly, after the flange bolts are connected for a certain time, the flange bolts can get rusty and aged, and the flange bolts need to be replaced in order to ensure the tightness and stability of the pipeline connection positions; finally, the most important point is that the existing clamping pliers device mostly adopts a rubber pad at the abutting end of the rigid pressure head to compensate the size error in the flange connection process, and the rubber pad can bear smaller pretightening force which is easy to damage and is not suitable for the working condition occasion with larger pretightening force requirement.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above technical problem effectively, provide a clamping device, can effectively press from both sides tightly and satisfy the in-service use requirement to the flange fast.

A clamping device comprises a clamp body, at least one disc spring, a guide pressure head, a guide ring and a sliding pressure head, wherein the clamp body comprises a clamp body main body, a guide part and a sliding part, and the guide part and the sliding part are opposite and fixedly connected together through the clamp body main body; a cylindrical groove is transversely formed in the guide part, a guide through hole is transversely formed in the guide part in a penetrating manner, the cylindrical groove and the guide through hole are coaxial, and the outer diameter of the cylindrical groove is larger than the diameter of the guide through hole; the disc spring is of a disc shape with a hollow lower bottom, the guide ring is a ring body, the diameter of the upper bottom of the disc spring and the diameter of the outer ring of the guide ring are both smaller than the outer diameter of the cylindrical groove, the disc spring and the guide ring are both placed in the cylindrical groove and are coaxial with the cylindrical groove, and the guide ring is closer to the sliding part than the disc spring; the guide pressure head is arranged in the guide through hole in a penetrating mode, the guide pressure head is fixedly sleeved with the guide ring and movably sleeved with the disc spring, and when the guide pressure head moves outwards, the guide ring extrudes the disc spring; the sliding pressure head is movably and telescopically connected to the sliding part, and the guide pressure head and the sliding pressure head are used for clamping foreign objects.

The sliding part further comprises a sliding pin, a connecting rod, a handle, a fixed connecting pin, a movable connecting pin and a housing, a sliding through hole transversely penetrates through the sliding part at the position opposite to the guide part, the sliding through hole is coaxial with the guide through hole, and the housing with a hollow inner part is mounted at one end of the sliding part, which is far away from the guide part; the sliding press head is arranged in the sliding through hole in a penetrating mode, one end, far away from the guide press head, of the sliding press head is movably connected with the connecting rod through the sliding pin, the connecting rod is movably connected with the handle through the movable connecting pin, the handle is movably connected with the housing through the fixed connecting pin, and the fixed connecting pin is fixedly connected with the housing.

Furthermore, the guide part also comprises a limit nut which is detachably arranged on one side of the guide part, which is opposite to the sliding part, and when the limit nut is detached, the cylindrical groove is exposed.

Furthermore, at least one dish spring be a plurality of in the cylinder recess, a plurality of dish spring superposes according to flange thickness deviation, and two adjacent dish springs are according to equidirectional stack arrangement, overlap promptly in series.

Furthermore, at least one dish spring be a plurality of in the cylinder recess, a plurality of dish spring superposes according to flange thickness deviation, and two adjacent dish springs are according to the not equidirectional stack arrangement, overlap promptly parallelly connected.

Furthermore, a rubber pad is arranged on one side, opposite to the sliding press head, of the guide press head.

Furthermore, a rubber pad is arranged on one side, opposite to the guide pressure head, of the sliding pressure head.

Furthermore, the elastic range of the clamp device is adjustable within 0.5-2 mm.

The utility model has the advantages that:

(1) the utility model discloses guaranteeing under the circumstances that clamping mode safe and reliable just satisfied actual pretightning force required, it is more convenient than traditional flange bolted connection fast, saved flange joint's operating time by a wide margin to promote work efficiency.

(2) In the aspect of flexible stop device's design, the utility model discloses the device adopts the dish spring as elastic element, on the dimensional error basis of guaranteeing to compensate the flange joint in-process, can obtain great pretightning force, can satisfy the required pretightning force of common flange joint completely.

(3) In the aspect of pretightning force adjustment scheme design, the utility model discloses install the series connection of accessible dish spring, parallelly connected, different stack modes such as series-parallel connection increase or reduce the pretightning force demand that dish spring number realized different occasions.

(4) The elastic range of the clamp device of the utility model can be adjusted within 0.5-2 mm; the clamping completion time of a single clamping device is not more than 3 s; 4-6 flanges can be used in one group, and the number is determined according to specific requirements.

Drawings

In order to better express the technical solution of the present invention, the following description of the present invention will be made with reference to the accompanying drawings:

FIG. 1 is a block diagram of a clamp assembly;

FIG. 2 is a schematic view of a clamping assembly in a clamped and undamped condition;

FIG. 3 is a layout of a clamp apparatus;

the reference numbers illustrate: 1. the fixture body, 2, dish spring, 3, limit nut, 4, direction pressure head, 5, slip pressure head, 6, sliding pin, 7, connecting rod, 8, housing, 9, handle, 10, fixed connection round pin, 11, swing joint round pin, 12, guide ring, 13, guide part, 131, cylinder recess, 132, direction through-hole, 14, slide part, 141, slip through-hole, 15, the fixture body main part.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-3, in a first embodiment, the clamping device includes a clamp body 1, a plurality of disc springs 2, a guide pressure head 4, a guide ring 12, a slide pressure head 5, a slide pin 6, a connecting rod 7, a handle 9, a fixed connecting pin 10, a movable connecting pin 11, and a housing 8, wherein the clamp body 1 includes a clamp body main body 15, a guide portion 13, and a slide portion 14, and the guide portion 13 and the slide portion 14 are opposite to each other and are fixedly connected together by the clamp body main body 15.

A cylindrical groove 131 is transversely formed in the guide part 13, a guide through hole 132 is transversely formed in the guide part 13 in a penetrating manner, the cylindrical groove 131 and the guide through hole 132 are coaxial, and the outer diameter of the cylindrical groove 131 is larger than the diameter of the guide through hole 132; the disc spring 2 is of a disc shape with a hollow lower bottom, the guide ring 12 is a circular ring body, the diameter of the upper bottom of the disc spring 2 and the diameter of the outer ring of the guide ring 12 are both smaller than the outer diameter of the cylindrical groove 131, the disc spring 2 and the guide ring 12 are both placed in the cylindrical groove 131 and are coaxial with the cylindrical groove 131, and the guide ring 12 is closer to the sliding part 14 than the disc spring 2; the guide pressure head 4 is arranged in the guide through hole 132 in a penetrating manner, the guide pressure head 4 is fixedly sleeved with the guide ring 12 and movably sleeved with the disc spring 2, so that when the guide pressure head 4 moves outwards, the guide ring 12 extrudes the disc spring 2; the guiding part 13 further comprises a limiting nut 3 which is detachably arranged on one side of the guiding part 13 relative to the sliding part 14, and when the limiting nut 3 is detached, the cylindrical groove 131 is exposed. A rubber pad (not shown) is arranged on one side of the guide pressure head 4 opposite to the sliding pressure head 5.

A sliding through hole 141 transversely penetrates through the sliding part 14 at a position opposite to the guide part 13, the sliding through hole 141 is coaxial with the guide through hole 132, and one end of the sliding part 14, which is far away from the guide part 13, is provided with a housing 8 with a hollow inner part; the sliding press head 5 is arranged in the sliding through hole 141 in a penetrating manner, one end, far away from the guide press head 4, of the sliding press head 5 is movably connected with the connecting rod 7 through the sliding pin 6, the connecting rod 7 is movably connected with the handle 9 through the movable connecting pin 11, the handle 9 is movably connected with the housing 8 through the fixed connecting pin 10, and the fixed connecting pin 10 is fixedly connected with the housing 8; the guide pressure head 4 and the sliding pressure head 5 are used for clamping the butt flange. The sliding press head 5 is provided with a rubber pad (not shown) on the side opposite to the guide press head 4.

The utility model discloses a plurality of dish springs 2, for the dish type spring, the shape is the dish, and 2 thickness of every dish spring are fixed, divide into the upper base and go to the bottom, and the upper base diameter is greater than the diameter of going to the bottom, and the direction pressure head 4 is cup jointed in a plurality of dish spring 2's inner ring activity. This embodiment uses a plurality of dish springs 2 in cylinder recess 131, and a plurality of dish springs 2 are according to the stack of flange thickness deviation, and two adjacent dish springs 2 are arranged according to the equidirectional stack, and the upper base is close to with the upper base between two adjacent dish springs 2 promptly, and the lower base is close to with the lower base, the stack of establishing ties promptly.

The difference between the second embodiment and the first embodiment is that a plurality of disc springs 2 are used in the cylindrical groove 131, the plurality of disc springs 2 are stacked according to the thickness deviation of the butting flange, and two adjacent disc springs 2 are stacked and arranged in different directions, that is, the upper bottoms of the two adjacent disc springs 2 are close to each other, the lower bottoms of the two adjacent disc springs are far away from each other, or the lower bottoms of the two adjacent disc springs are close to each other, and the upper bottoms of the two adjacent disc springs are far away from each other, that is, the two adjacent disc springs are stacked in parallel.

The difference between the third embodiment and the first and second embodiments is that a plurality of disc springs 2 are used in the cylindrical groove 131, and according to the specific requirements of pretightening force and dimensional error needing to be compensated in the flange connection process, two adjacent disc springs 2 are stacked in series or in parallel, that is, stacked in series and parallel.

The difference between the fourth embodiment and the previous embodiments is that the elastic range of the clamp device of the present invention is adjustable within 0.5-2 mm.

The utility model discloses an use and divide into three step:

the first step is as follows: after the end face of the butt flange is placed with the sealant pad, pre-positioning can be carried out by using two cylindrical pins with corresponding specifications, and the end face of the butt flange is tightly leaned as much as possible; the mounting holes of the flange plate are standard holes (such as holes with the diameter of 8 mm), the cylindrical pins in the market are also standard pins (such as corresponding cylindrical pins with the diameter of 8 mm), and when the pre-positioning is carried out, the pins are inserted into the flange holes of the two butting flanges, so that the flange holes on the surfaces of the two butting flanges can be basically aligned;

the second step is that: the clamping devices are arranged on two sides of the butt flange, the handles are pushed upwards by hands, and the sliding pressure head moves leftwards, so that the sliding pin, the movable connecting pin and the fixed connecting pin are positioned on a straight line to clamp the butt flange;

the third step: in the clamping process, the disc springs compensate the thickness deviation of the butting flange, and the number and the superposition mode of the disc springs can be adjusted according to the actual deviation condition of the butting flange to form different compensation values.

The utility model discloses use dish spring 2's technological effect lies in, because the pretightning force that single dish spring 2 can bear and the size that can compensate all are the same. Therefore, in the series superposition, the total pretightening force that a plurality of dish springs 2 can bear is that single dish spring 2 bears the pretightening force times uses 2 quantity of dish springs, and the compensation size is the compensation size of single dish spring 2. In the parallel stack, the total pretightening force that a plurality of dish springs 2 can bear is that single dish spring 2 bears the pretightening force times uses dish spring 2 quantity, and the compensation size is that the compensation size of single dish spring 2 multiplies uses dish spring 2 quantity. The total pre-tightening force and the compensation size which can be borne by the series-parallel connection superposition are determined according to the content and the specific superposition quantity and mode. Consequently different according to pressing from both sides tight flange scope demand, can design in a flexible way required pretightning force, use series connection stack, parallelly connected stack, the multiple mode of series-parallel connection stack, consequently use the utility model discloses the rubber pad that designatable pretightning force was greater than prior art and used far away to satisfy engineering technical requirement.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (8)

1. The clamping device is characterized by comprising a clamp body, at least one disc spring, a guide pressure head, a guide ring and a sliding pressure head, wherein the clamp body comprises a clamp body main body, a guide part and a sliding part, and the guide part and the sliding part are opposite and fixedly connected together through the clamp body main body; a cylindrical groove is transversely formed in the guide part, a guide through hole is transversely formed in the guide part in a penetrating mode, the cylindrical groove and the guide through hole are coaxial, and the outer diameter of the cylindrical groove is larger than the diameter of the guide through hole; the disc spring is of a disc shape with a hollow lower bottom, the guide ring is a ring body, the diameter of the upper bottom of the disc spring and the diameter of the outer ring of the guide ring are both smaller than the outer diameter of the cylindrical groove, the disc spring and the guide ring are both placed in the cylindrical groove and are coaxial with the cylindrical groove, and the guide ring is closer to the sliding part than the disc spring; the guide pressure head is arranged in the guide through hole in a penetrating mode, the guide pressure head is fixedly sleeved with the guide ring and movably sleeved with the disc spring, and when the guide pressure head moves outwards, the guide ring extrudes the disc spring; the sliding pressure head is movably and telescopically connected to the sliding part, and the guide pressure head and the sliding pressure head are used for clamping foreign objects.

2. The clamping device as claimed in claim 1, wherein the sliding part further comprises a sliding pin, a connecting rod, a handle, a fixed connecting pin, a movable connecting pin and a housing, the sliding part is transversely provided with a sliding through hole at a position opposite to the guide part, the sliding through hole is coaxial with the guide through hole, and one end of the sliding part, which is far away from the guide part, is provided with the housing with a hollow interior; the sliding press head is arranged in the sliding through hole in a penetrating mode, one end, far away from the guide press head, of the sliding press head is movably connected with the connecting rod through the sliding pin, the connecting rod is movably connected with the handle through the movable connecting pin, the handle is movably connected with the housing through the fixed connecting pin, and the fixed connecting pin is fixedly connected with the housing.

3. The clamping apparatus as claimed in claim 1, wherein the guiding portion further comprises a limiting nut detachably mounted on a side of the guiding portion opposite to the sliding portion, and when the limiting nut is detached, the cylindrical groove is exposed.

4. The clamping apparatus as claimed in claim 1, wherein at least one of said disc springs is provided in a plurality of said cylindrical recesses, a plurality of said disc springs are stacked according to a thickness deviation of a flange, and two adjacent disc springs are stacked in series in the same direction.

5. The clamping apparatus as claimed in claim 1, wherein at least one of said disc springs is provided in a plurality of said cylindrical recesses, a plurality of said disc springs are stacked according to a thickness deviation of the flange, and two adjacent disc springs are stacked in parallel in different directions.

6. The clamping device as claimed in claim 1, wherein a rubber pad is provided on a side of the guide ram opposite the slide ram.

7. The clamping device as claimed in claim 1, wherein a rubber pad is provided on a side of the ram opposite the guide ram.

8. The clamping apparatus as claimed in claim 1, wherein the clamping apparatus has an elasticity adjustable within the range of 0.5-2 mm.

Images