CN211735666U - Pulling connection device and clamping mechanism - Google Patents

Abstract

The utility model discloses a draw-connecting device and a clamping mechanism, the clamping mechanism comprises at least two clamping pieces, the clamping pieces comprise an inner side and an outer side opposite to the inner side, and the outer sides of the at least two clamping pieces are matched to form a clamping part; the nut is in threaded transmission connection with the first screw rod, the nut is provided with a supporting part with a trapezoidal or triangular cross section, the small end of the supporting part faces the inner side of the clamping piece, and the nut is in sliding fit with the clamping piece; at least one clamping piece can move in the radial direction relative to the nut, and the inner side of the movable clamping piece can abut against the abutting portion, so that the diameter of the clamping portion can be adjusted. The clamping mechanism can form a built-in fixed point in the drain pipe, and the drain pipe is convenient to pull and butt joint. This draw and connect device can assist in the construction that carries out the drainage pipe of socket joint formula in constrictive place, is favorable to improving the narrow place and carries out the efficiency of construction that the drain pipe laid.

Description

Pulling connection device and clamping mechanism

Technical Field

The utility model relates to a construction technical field especially relates to a draw and connect device and card solid mechanism.

Background

Along with the rapid development of national economy in China, the urbanization process is further accelerated, the urbanization level is continuously improved, the urban construction scale is gradually increased, drainage pipeline construction engineering is an important guarantee for normal operation of cities, is an important means for improving urban emergency functions, resisting natural disasters and preventing urban pollution, is a big matter about the civil affairs, and needs to be paid sufficient attention.

In the construction process of the socket type drainage pipeline, if the field is narrow, the traditional mechanical equipment cannot operate, and at the moment, only manual operation is relied on, so that the operation process is slow.

SUMMERY OF THE UTILITY MODEL

Accordingly, there is a need for a pull-connecting device and a fastening mechanism. The clamping mechanism can form a built-in fixed point in the drain pipe, and the drain pipe is convenient to pull and butt joint. This draw and connect device can assist in the construction that carries out the drainage pipe of socket joint formula in constrictive place, is favorable to improving the narrow place and carries out the efficiency of construction that the drain pipe laid.

The technical scheme is as follows:

on one hand, the application provides a clamping mechanism, which comprises at least two clamping pieces, wherein each clamping piece comprises an inner side and an outer side opposite to the inner side, and the outer sides of the at least two clamping pieces are matched to form a clamping part; the nut is in threaded transmission connection with the first screw rod, the nut is provided with a butting part with a trapezoidal or triangular cross section, the small end of the butting part faces the inner side of the clamping piece, and the nut is in sliding fit with the clamping piece; at least one clamping piece can move relative to the radial direction of the nut, and the inner side of the movable clamping piece can abut against the abutting part, so that the diameter of the clamping part can be adjusted.

When the clamping and fixing mechanism is used, the first screw rod can be rotated according to the inner diameter of the drain pipe, so that the small end of the abutting portion moves towards the direction far away from the center of the clamping and fixing piece, the diameter of the clamping portion is reduced, the clamping and fixing component can be conveniently inserted into the drain pipe, and the clamping and fixing mechanism is placed at a proper position. And then the first screw rod is rotated reversely, so that the small end of the abutting part moves towards the direction close to the center of the clamping and fixing piece, the abutting part of the nut abuts against the inner side of the movable clamping and fixing piece, the diameter of the clamping part is gradually increased, and the outer side of the clamping and fixing piece is clamped and fixed with the inner wall of the drain pipe. So, utilize above-mentioned card to block solid mechanism and can form built-in fixed point in the drain pipe, occupation space is little, conveniently draws the drain pipe to dock under constrictive construction environment.

The technical solution is further explained below:

in one embodiment, the outer side of the clamping and fixing piece is provided with a matching surface which is used for being attached to the inner wall of the drain pipe.

In one embodiment, the matching surface is provided with an elastic anti-slip layer.

In one embodiment, the inner sides of all the clamping pieces are abutted against the nut, and all the clamping pieces can move relative to the nut in the radial direction, so that the diameter of the clamping part can be adjusted.

In one embodiment, all the clamping pieces can move relatively and can automatically retract and reset.

In one embodiment, the number of the nuts is two, and the nuts are arranged on two sides of the clamping piece at intervals; the screw thread turning directions of the two nuts are opposite, and the screw thread turning directions of the first screw rods are the same; or the screw thread turning directions of the two nuts are the same, the first screw comprises a first external thread structure and a second external thread structure opposite to the screw thread turning direction of the first external thread structure, the first external thread structure is matched with one of the nuts, and the second external thread structure is matched with the other nut.

In one embodiment, the clamping mechanism further comprises a coupling component, and the coupling component is used for connecting the first screw rod.

On the other hand, the application also provides a pulling-connecting device which comprises the clamping mechanism, a clamping jaw and a pushing piece arranged on the outer side of the clamping jaw, wherein the clamping jaw is provided with a through hole, and the pushing piece is provided with an internal threaded hole; the coupling component comprises a second screw rod in transmission connection with the first screw rod, and the second screw rod can be sleeved in the through hole and is in threaded fit with the internal threaded hole, so that the pushing piece can push the clamping jaw to move.

When the pulling-connecting device is used, the pulling-connecting device can be arranged in a drain pipe which is installed well, and the clamping and fixing mechanism is utilized to be arranged in the drain pipe. Then the second screw rod is directly or indirectly connected with the first screw rod, and the second screw rod drives the first screw rod to rotate directly or indirectly, so that the clamping mechanism is fixed in the drainage pipe. And then the drain pipe which needs to be newly installed is inserted into the socket of the installed drain pipe, then the clamping jaw is installed on the second screw rod through the through hole, the abutting part is pushed onto the second screw rod through the internal thread hole and is arranged on the outer side of the clamping jaw, and the clamping jaw can be clamped with the end part of the drain pipe which is ready to be installed. At the moment, the pushing piece is rotated, and the clamping jaws are pushed to move by the pushing piece, so that the water draining pipes are aligned in a socket joint mode, and the butt joint and fixation of the two water draining pipes are completed. After the assembly is completed, the abutting part can be loosened, the clamping jaw is disassembled, and then the rotating second screw rod drives the first screw rod to rotate, so that the diameter of the clamping part is contracted, and the clamping mechanism is disassembled from the drain pipe. Above-mentioned draw and connect device can utilize the inner space of drain pipe to realize accepting between two drain pipes fixedly, and the construction space that so occupies is little, can assist the construction that carries out the drainage pipe of socket joint formula in constrictive place, is favorable to improving the narrow place and carries out the efficiency of construction that the drain pipe laid.

The technical solution is further explained below:

in one embodiment, the other end of the second screw is provided with a first force application part, and the first force application part is arranged outside the internal threaded hole; or/and the pushing piece is provided with a second force application part.

In one embodiment, the jaw comprises at least two card bodies, and the length of each card body is adjustable.

Drawings

Fig. 1 is a schematic view illustrating a usage state of a pull-connection device in an embodiment;

FIG. 2 is an enlarged view of a portion of FIG. 1;

FIG. 3 is a side view of the clamping mechanism of FIG. 1;

FIG. 4 is a partially enlarged illustration of B shown in FIG. 1;

fig. 5 is a side view of the pawl of fig. 1.

Description of reference numerals:

100. a clamping mechanism; 110. a clamping and fixing piece; 102. an inner side; 104. an outer side; 112. a mating surface; 114. an anti-slip layer; 120. a clamping part; 130. a first screw; 140. a nut; 142. a holding portion; 150. a coupling assembly; 152. a drive shaft; 154. a second screw; 106. a first force application part; 200. a claw; 210. a card body; 220. an internally threaded bore; 300. a pushing member; 310. an internally threaded bore; 320. a second force application part; 400. and a water discharge pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.

It will be understood that when an element is referred to as being "secured to," "disposed on," "secured to," or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Further, when one element is considered as being in "transmission connection" with another element, the two elements may be fixed in a detachable connection manner or in an undetachable connection manner, such as sleeving, clamping, integrally-formed fixing, welding and the like, as long as force transmission can be achieved, which can be achieved in the prior art and is not burdensome. When an element is perpendicular or nearly perpendicular to another element, it is desirable that the two elements are perpendicular, but some vertical error may exist due to manufacturing and assembly effects. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The references to "first" and "second" in the present invention do not denote any particular quantity or order, but rather are merely used to distinguish one name from another.

The construction of the drainage pipe 400, especially the concrete drainage pipe, if the drainage pipe 400 is carried by manpower, not only the labor intensity is high, but also the time and the labor are wasted, which results in the very slow construction efficiency. In some construction environments, such as the renovation or the laying of drainage pipelines in urban villages, the laying operation of the traditional mechanical auxiliary construction equipment is difficult to carry out due to the narrow laneway.

As shown in fig. 1 to 5, in an embodiment, a pulling-connecting device is provided, which includes a clamping mechanism 100 for clamping inside a drain pipe 400, a clamping jaw 200 for clamping at an end of the drain pipe 400, and a pushing member 300 for pushing the clamping jaw 200.

As shown in fig. 2 and fig. 3, the fastening mechanism 100 includes at least two fastening members 110, the fastening members 110 include an inner side 102 and an outer side 104 opposite to the inner side 102, and the outer sides 104 of the at least two fastening members 110 cooperate to form a fastening portion 120; the nut 140 is provided with a supporting part 142 with a trapezoidal or triangular cross section, the small end of the supporting part 142 faces the inner side 102 of the clamping and fixing piece 110, and the nut 140 is in sliding fit with the clamping and fixing piece 110; at least one of the clamping members 110 can move radially relative to the nut 140, and the inner side 102 of the movable clamping member 110 can abut against the abutting portion 142, so that the diameter of the clamping portion 120 can be adjusted, and the clamping structure further includes a coupling component 150 for connecting the first screw 130 and the clamping jaw 200.

As shown in fig. 1, 4 and 5, the pawl 200 has a through hole 220, the pushing member 300 has an internal threaded hole 310, the coupling assembly 150 includes a second screw 154 in driving connection with the first screw 130, and the second screw 154 can be inserted into the through hole 220 and threadedly engaged with the internal threaded hole 310, so that the pushing member 300 can push the pawl 200 to move.

Thus, when the pull-connection device is used for constructing a socket-type drainage pipeline, the second screw rod 154 is rotated and the first screw rod 130 is driven according to the inner diameter of the installed drainage pipeline 400, and the nut 140 is in sliding fit with the clamping member 110, so that the nut 140 can move along the axis of the screw rod, and then the small end of the abutting portion 142 moves towards the center direction away from the clamping member 110, so that the diameter of the clamping portion 120 is reduced, and the clamping member is conveniently inserted into the drainage pipeline 400 and placed at a proper position. Then, the second screw 154 is rotated reversely, so that the small end of the abutting portion 142 moves toward the center direction of the clamping member 110, the abutting portion 142 of the nut 140 abuts against the inner side 102 of the movable clamping member 110, and the diameter of the clamping portion 120 gradually increases, so that the outer side 104 of the clamping member 110 is clamped with the inner wall of the drain pipe 400. Then, a drain pipe 400 to be newly installed is inserted into a socket of the installed drain pipe 400, the claw 200 is installed on the second screw rod 154 through the through hole 220, the abutting piece 300 is arranged on the second screw rod 154 through the internal threaded hole 310 and is arranged outside the claw 299, and the claw 200 can be clamped with the end part of the drain pipe 400 to be installed. At this time, the pushing member 300 is rotated, the pushing member 300 pushes the clamping jaw 200 to move, the second screw 154 and the first screw 130 do not rotate, that is, the clamping portion 120 is not loosened, so the pushing member 300 pushes the clamping jaw 200 to move, the clamping jaw 200 pulls the drainage pipes 400 to perform socket alignment, and the butt joint and fixation of the two drainage pipes 400 are completed. After the assembly is completed, the pushing member 300 can be loosened, the clamping jaw 200 can be disassembled, and then the second screw rod 154 is rotated to drive the first screw rod 130 to rotate, so that the diameter of the clamping portion 120 is contracted, and the clamping mechanism 100 can be disassembled from the drain pipe 400. Above-mentioned draw and connect device can utilize the inner space of drain pipe 400 to realize accepting between two drain pipes 400 fixedly, and the construction space that so occupies is little, can assist the construction that carries out the drainage pipe of socket joint formula in constrictive place, is favorable to improving the narrow place and carries out the efficiency of construction that drain pipe 400 laid (like the drainage pipe rectification in village in city or lay).

Of course, the pulling-connecting device is not limited to be applied to narrow sites for assisting in construction of socket-type drainage pipelines, but also can be applied to other sites, and the pulling-connecting device can reduce occupied construction space and avoid traffic jam.

It should be noted that, the number of the card fixing members 110 may be designed according to actual situations, and is not limited herein. The shapes and structures of the two clamping members 110 may not be completely the same, as long as the clamping members 110 are matched to achieve the above-mentioned functions.

For example, one of the clamping members 110 is fixed on the screw, at least one of the clamping members 110 is slidably engaged with the fixed clamping member 110, and the movable clamping member 110 moves under the action of the abutting portion 142, so that the diameter of the clamping portion 120 engaged with the clamping members 110 changes.

Or specifically, in this embodiment, as shown in fig. 3, two of the clamping members 110 are semi-cylindrical, and the two clamping members 110 are in sliding fit. Thus, under the action of the abutting portion 142, the two clamping members 110 can move, and the distance between the two clamping members changes, thereby adjusting the diameter of the clamping portion 120.

It should be noted that the second screw 154 and the first screw 130 may be directly connected or indirectly connected.

In the embodiment, as shown in fig. 1, the coupling assembly 150 includes a transmission shaft 152, one end of the second screw 154 is connected to one end of the transmission shaft 152, and the other end of the transmission shaft 152 is rotatably connected to the first screw 130. Still more specifically, the connection between each drive shaft 152 and the screw may be achieved by a coupling.

On the basis of any of the above embodiments, as shown in fig. 2, in an embodiment, the inner sides 102 of all the clamping members 110 abut against the nut 140, and all the clamping members 110 can move in the radial direction relative to the nut 140, so that the diameter of the clamping portion 120 is adjustable. Therefore, the clamping member 110 forming the clamping portion 120 can move along the radial direction of the nut 140, so that the center of the clamping portion 120 does not change during the change of the diameter of the clamping portion 120, which is beneficial to maintaining the consistency of the acting force and making the force transmission among the first screw 130, the transmission shaft 152 and the second screw 154 more uniform.

Further, as shown in fig. 3, in an embodiment, all the fastening members 110 are movable relatively and capable of automatically returning to the retracted position. Thus, the screw rod is rotated to move the small end of the abutting portion 142 away from the center of the clamping member 110, so that the diameter of the clamping portion 120 can be automatically reduced; the screw rod is rotated reversely, so that the small end of the abutting portion 142 moves toward the center direction of the clamping member 110, the abutting portion 142 of the nut 140 abuts against the inner side 102 of the movable clamping member 110, and the diameter of the clamping portion 120 gradually increases.

It can be understood that, when the large end of the abutting portion 142 is inserted between the clamping member 110 and the screw, the diameter of the clamping portion 120 is the largest.

It should be noted that the "abutting portion 142" is a hole side wall of the nut 140, and the cross section of the abutting portion is trapezoidal or triangular, which can be understood that after the nut 140 is cut along the axis, an orthographic projection of a hole wall on one side is trapezoidal or triangular. In addition, the "trapezoid or triangle" is all equivalent technical solutions that should protect the whole visual effect or action effect as the present application.

In addition, the cross section of the "abutting portion 142" is trapezoidal or triangular, and the nut 140 is not limited to be in a truncated cone shape or a cone shape, and the nut 140 may have the "abutting portion 142" with the above structure, and other portions that do not engage with the engaging member 110 may have any shape as long as there is no contradiction.

It should be noted that the sliding fit between the nut 140 and the clamping member 110 can be implemented in various manners, such as sliding connection, limiting fit between the limiting groove and the guide rod, and the like, as long as it can be known that the nut cannot rotate relative to the clamping member.

Specifically, in this embodiment, the nut is fixedly provided with the guide rod, the clamping member is provided with the limiting groove, and the sliding fit between the nut 140 and the clamping member 110 is realized through the matching of the guide rail and the limiting groove.

In addition to any of the above embodiments, in an embodiment, the outer side 104 of the fastening member 110 is provided with a mating surface 112 for fitting with the inner wall of the drainage pipe 400. In this way, the mating surface 112 can better fit the inner wall of the drain pipe 400, so that the fastening between the locking portion 120 and the drain pipe 400 is more reliable.

In particular, in this embodiment, the mating surface 112 may be cylindrical.

Further, as shown in fig. 2 and 3, in one embodiment, the mating surface 112 is provided with an elastic anti-slip layer 114. Thus, the friction between the locking portion 120 and the drain pipe 400 can be further increased, so that the fixation of the two is more reliable. The anti-slip layer 114 may be a rubber layer.

The specific structural shape of the fastener 110 includes, but is not limited to, that shown in the drawings, and other structural shapes are also possible.

On the basis of any of the above embodiments, as shown in fig. 2, in an embodiment, two nuts 140 are provided and spaced apart from each other at two sides of the fastening member 110; the screw thread directions of the two nuts 140 are opposite, and the screw thread directions of the first screw 130 are the same; or the two nuts 140 have the same thread direction, the first screw 130 includes a first external thread structure and a second external thread structure opposite to the thread direction of the first external thread structure, the first external thread structure is engaged with one of the nuts 140, and the second external thread structure is engaged with the other nut 140. Thus, the nuts 140 can be simultaneously inserted into two sides of the fastening member 110 to move the fastening member 110, and when the fastening portion 120 is fastened to the drain pipe 400, the stress of the fastening member 110 is uniformly dispersed to the first screw 130 through the two nuts 140, so that the fastening mechanism 100 can be reliably fixed in the drain pipe 400, and when the fastening mechanism is subjected to an axial pulling force, the fastening portion 120 can still be stably fastened to the inner hole of the drain pipe 400.

In addition to any of the above embodiments, as shown in fig. 4, in an embodiment, the other end of the second screw 154 is provided with the first force applying portion 106, and the first force applying portion 106 is disposed outside the through hole 220. Thus, the first force application portion 106 facilitates the operator to rotate the second screw 154. The first force application portion 106 may be a handle or the like, or a connection portion capable of being connected to a wrench or other rotary power device.

Or, as shown in fig. 4 and fig. 5, in an embodiment, the pushing member 300 is provided with a second force application portion 320. Similarly, the second force application portion 320 is convenient for the operator to rotate the pushing element 300. The second force application portion 320 may be a handle or the like, or a connection portion capable of being connected to a wrench or other rotary power equipment.

On the basis of any of the above embodiments, as shown in fig. 5, in one embodiment, the jaw 200 includes at least two clamping bodies 210, and the length of the clamping bodies 210 is adjustable. Thus, the length of the clamping body 210 is adjusted, so that the diameter of the clamping jaw 200 can be adjusted, and the clamping sleeve of the water discharge pipes 400 with different diameters can be realized.

It should be noted that the specific structural shape of the "claw 200" includes, but is not limited to, that shown in the drawings, and also includes other structures that can be clamped at the end of the drain pipe 400.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

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. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A clamping mechanism, comprising:

the clamping part comprises an inner side and an outer side opposite to the inner side, and the outer sides of the clamping parts are matched to form a clamping part;

the nut is in threaded transmission connection with the first screw rod, the nut is provided with a butting part with a trapezoidal or triangular cross section, the small end of the butting part faces the inner side of the clamping piece, and the nut is in sliding fit with the clamping piece;

at least one clamping piece can move relative to the radial direction of the nut, and the inner side of the movable clamping piece can abut against the abutting part, so that the diameter of the clamping part can be adjusted.

2. The clamping mechanism according to claim 1, wherein the outer side of the clamping member is provided with a fitting surface for fitting with the inner wall of the drain pipe.

3. The fastening mechanism of claim 2, wherein the mating surface has a resilient anti-slip layer.

4. The clamping mechanism according to claim 1, wherein the inner sides of all the clamping members abut against the nut, and all the clamping members are capable of moving radially relative to the nut, so that the diameter of the clamping portion is adjustable.

5. The clamping mechanism according to claim 4, wherein all of said clamping members are relatively movable and capable of automatically retracting and restoring.

6. The clamping mechanism according to claim 1, wherein the number of the nuts is two, and the nuts are arranged on two sides of the clamping member at intervals; the screw thread turning directions of the two nuts are opposite, and the screw thread turning directions of the first screw rods are the same; or the screw thread turning directions of the two nuts are the same, the first screw comprises a first external thread structure and a second external thread structure opposite to the screw thread turning direction of the first external thread structure, the first external thread structure is matched with one of the nuts, and the second external thread structure is matched with the other nut.

7. The clamping mechanism according to any one of claims 1 to 6, further comprising a coupling assembly for connecting the first screw.

8. A pulling-connecting device, comprising the clamping mechanism of claim 7, further comprising a claw and a pushing piece arranged outside the claw, wherein the claw is provided with a through hole, and the pushing piece is provided with an internal thread hole; the coupling component comprises a second screw rod in transmission connection with the first screw rod, and the second screw rod can be sleeved in the through hole and is in threaded fit with the internal threaded hole, so that the pushing piece can push the clamping jaw to move.

9. The pulling device according to claim 8, wherein the second screw is provided with a first force application portion, and the first force application portion is disposed outside the internally threaded hole; or/and the pushing piece is provided with a second force application part.

10. Pulling device according to claim 8 or 9, wherein the jaws comprise at least two card bodies, the length of which is adjustable.

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