CN211286529U

CN211286529U - Expansion clamp

Info

Publication number: CN211286529U
Application number: CN201921179555.1U
Authority: CN
Inventors: 陈超; 黄劲; 秦节发; 彭剑; 祁广广
Original assignee: Huaxin Cement Co Ltd
Current assignee: Huaxin Cement Co Ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-08-18
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses an expansion clamp, which comprises an elastic expansion main body arranged in a roller; the outer wall of the elastic expansion main body is tightly pressed on the inner wall of the roller and is in surface contact with the roller; one end of the elastic expansion main body is also provided with a connecting structure for connecting an external machine element. The elastic expansion main body of the expansion clamp is in surface contact with the inner wall of the roller, the connecting structure for connecting the external machine part is arranged at one end of the elastic expansion main body, and therefore when the expansion clamp is used, whether the elastic expansion main body is in contact with the roller or not can be conveniently realized, the installation and the disassembly between the external machine part and the roller can be conveniently realized, meanwhile, the elastic expansion main body is in surface contact with the roller when in contact, the connection tightness between the elastic expansion main body and the roller is greatly improved, the purpose of improving the connection tightness between the external machine part and the roller is achieved, and the use safety index is greatly improved.

Description

Expansion clamp

Technical Field

The utility model relates to a cylinder accessory technical field of concrete or other equipment especially relates to an use tight anchor clamps that expand on cylinder.

Background

As a roller for leveling concrete, the roller needs to be connected with an external mechanical part so as to provide power, support or a direction connecting rod for the roller. Usually, the external machine member and the roller are rigidly connected by welding, thread engagement connection and the like, and are not easy to mount and dismount.

To this end, chinese utility model patent CN201099832Y discloses a rotary friction formula terrace paver is decorated to pervious concrete, provides a mode that tight wheel connection cylinder expands, and its tight wheel that expands includes a nozzle stub, makes the nozzle stub flare and form zonulae occludens with the cylinder through the extrusion. However, the expansion wheel with the structure only depends on the outward expansion of the slotted short pipe to be in limited point contact with the roller, the contact area of the expansion wheel and the roller is too small, so that the fastening force between the roller and the expansion wheel is insufficient when the expansion wheel is used, the connection fastening force between an external machine part and the roller is insufficient, and the potential safety hazard exists.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the invention aims to provide an expansion clamp which is convenient to mount and dismount between an external part and a roller when in use and can effectively improve the connection fastening force between the external part and the roller.

In order to achieve the above object, the present invention adopts the following technical solutions:

an expansion clamp comprises an elastic expansion main body arranged in a roller; the outer wall of the elastic expansion main body is tightly pressed on the inner wall of the roller and is in surface contact with the roller; one end of the elastic expansion main body is also provided with a connecting structure for connecting an external machine element.

Furthermore, the elastic expansion main body comprises a first flange plate, a second flange plate and an elastic expansion piece fixedly arranged between the first flange plate and the second flange plate.

Preferably, the first flange, the second flange, and the resilient expansion member are secured together by at least one bolt means.

More preferably, the bolt device comprises a connecting bolt, a first screw hole which penetrates through the front end and the rear end of the first flange plate and has an inner diameter matched with the outer diameter of the rod part of the connecting bolt, a third screw hole which penetrates through the front end and the rear end of the elastic expansion piece and has an inner diameter matched with the outer diameter of the rod part of the connecting bolt, and a second screw hole which is positioned on the second flange plate and is provided with an inner thread meshed with the outer thread of the rod part of the connecting bolt; and the rod part of the connecting bolt sequentially penetrates through the first screw hole and the third screw hole and then is connected with the second screw hole.

More preferably, the number of said bolt means is four.

Further, the diameter of the first flange plate is equal to the outer diameter of the roller, and the diameter of the second flange plate is equal to the outer diameter of the elastic expanding piece.

Further, the elastic expansion piece is of a cylindrical structure.

Further, the elastic expansion piece is made of rubber.

Further, the connecting structure is arranged on the outer side end of the first flange plate.

Preferably, the connecting structure is a hinge structure.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model discloses an expansion fixture, its elasticity expands tight main part and the face contact of cylinder inner wall formation, and a connection structure for connecting outside parts then sets up on one end of the tight main part of elasticity expansion, consequently when using, whether the contact of the tight main part of expansion through elasticity and cylinder is whether, can conveniently realize the installation and the dismantlement between outside parts and the cylinder, simultaneously because elasticity expands tight main part and cylinder is the face contact when the contact, then be favorable to having improved the elasticity greatly and expand the tightness of being connected between tight main part and the cylinder, thereby reach the purpose that promotes to be connected the fastening force between outside parts and the cylinder, the use safety index has been improved greatly.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic view of a connection structure of an expansion fixture and a roller according to the present invention;

FIG. 2 is a schematic view of the first flange;

fig. 3 is a schematic structural view of the expansion fixture of the present invention;

FIG. 4 is a schematic view of the construction of the second flange;

FIG. 5 is a schematic view of the construction of the connecting bolt;

FIG. 6 is a schematic view of the connection of the first and second flanges to the connecting rod bolts;

figure 7 is a schematic view of the configuration of the elastic expansion member.

Wherein the reference symbols are: 1. a first flange plate; 2. an elastic expansion member; 3. a second flange plate; 4. a connecting bolt; 5. a hinge structure; 6. a drum; 1-1, a first screw hole; 2-1, a third screw hole; 3-1 and a second screw hole.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given to the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments as follows:

as shown in fig. 1-7, the expansion fixture of the present invention comprises an elastic expansion main body disposed in a roller 6; the outer wall of the elastic expansion main body is tightly pressed against the inner wall of the roller 6 and is in surface contact with the roller 6; one end of the elastic expansion main body is also provided with a connecting structure for connecting an external machine element (not shown). And the connecting structure is a hinge structure 5 for the convenience that the external parts can flexibly drive the roller 6.

The utility model discloses a tight anchor clamps expand, its elasticity expands tight main part and 6 inner walls of cylinder form the face contact, and a connection structure for connecting outside parts then sets up on the one end of the tight main part of elasticity expansion, consequently when using, whether the contact of the tight main part of expansion through elasticity and cylinder 6 or not, can conveniently realize the installation and the dismantlement between outside parts and cylinder 6, simultaneously because the tight main part of elasticity expansion is the face contact with cylinder 6 when the contact, then be favorable to improving the elasticity fastening of being connected between the tight main part of expansion and the cylinder 6 greatly, thereby reach the purpose that promotes to be connected the fastening force between outside parts and the cylinder 6, the safety index in utilization has been improved greatly.

Specifically, the elastic expansion main body comprises a first flange plate 1, a second flange plate 3 and an elastic expansion piece 2 fixedly arranged between the first flange plate 1 and the second flange plate 3; the connection structure is arranged on the outer side end of the first flange plate 1.

In order to realize the detachable connection among the first flange plate 1, the second flange plate 3 and the elastic expansion member 2, the first flange plate 1, the second flange plate 3 and the elastic expansion member 2 are fixed together by at least one bolt device.

Specifically, the bolt device comprises a connecting bolt 4, a first screw hole 1-1 which penetrates through the front end and the rear end of the first flange plate 1 and has an inner diameter matched with the outer diameter of the rod part of the connecting bolt 4, a third screw hole 2-1 which penetrates through the front end and the rear end of the elastic expansion piece 2 and has an inner diameter matched with the outer diameter of the rod part of the connecting bolt 4, and a second screw hole 3-1 which is positioned on the second flange plate 3 and is provided with an inner thread for being meshed with the outer thread of the rod part of the connecting bolt 4; the rod part of the connecting bolt 4 sequentially penetrates through the first screw hole 1-1 and the third screw hole 2-1 and then is connected with the second screw hole 3-1.

In order to improve the connection stability among the first flange 1, the second flange 3, and the elastic expansion member 2, the number of the bolt devices is preferably four in this embodiment. Of course, the number of the bolt devices is not limited to 4 in this embodiment, and the user can set different numbers of bolt devices according to the actual use requirement to meet different use requirements, and the numbers all fall within the protection scope of the present invention.

To facilitate the installation of the elastic expansion body in the cylinder 6, the first flange 1 has a diameter equal to the outer diameter of the cylinder 6 and the second flange 3 has a diameter equal to the outer diameter of the elastic expansion member 2.

The elastic expansion member 2 is of a cylindrical configuration in order to match the shape of the roller 6 for effective surface contact of the elastic expansion member 2 with the roller 6. In order to save the production cost, the elastic expansion piece 2 is preferably made of rubber in the embodiment.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a tight anchor clamps expand which characterized in that: comprises an elastic expansion main body arranged in a roller; the outer wall of the elastic expansion main body is tightly pressed on the inner wall of the roller and is in surface contact with the roller; one end of the elastic expansion main body is also provided with a connecting structure for connecting an external machine element; the elastic expansion main body comprises a first flange plate, a second flange plate and an elastic expansion piece fixedly arranged between the first flange plate and the second flange plate; the first flange plate, the second flange plate and the elastic expansion piece are fixed together through at least one bolt device; the bolt device comprises a connecting bolt, a first screw hole, a third screw hole and a second screw hole, wherein the first screw hole penetrates through the front end and the rear end of the first flange plate, the inner diameter of the first screw hole is matched with the outer diameter of the rod part of the connecting bolt, the third screw hole penetrates through the front end and the rear end of the elastic expansion piece, the inner diameter of the third screw hole is matched with the outer diameter of the rod part of the connecting bolt, and the second screw hole is positioned on the second flange plate and is provided with an internal thread which is; and the rod part of the connecting bolt sequentially penetrates through the first screw hole and the third screw hole and then is connected with the second screw hole.

2. The expansion clamp of claim 1, wherein: the number of the bolt devices is four.

3. The expansion clamp according to claim 1 or 2, characterized in that: the diameter of the first flange plate is equal to the outer diameter of the roller, and the diameter of the second flange plate is equal to the outer diameter of the elastic expansion piece.

4. The expansion clamp according to claim 1 or 2, characterized in that: the elastic expansion piece is of a cylindrical structure.

5. The expansion clamp according to claim 1 or 2, characterized in that: the elastic expansion piece is made of rubber.

6. The expansion clamp according to claim 1 or 2, characterized in that: the connecting structure is arranged at the outer side end of the first flange plate.

7. The expansion clamp of claim 6, wherein: the connecting structure is a hinge structure.