Piston rod convenient to assemble and disassemble

Abstract

The utility model discloses a piston rod convenient to assemble and disassemble. The piston rod comprises a piston rod body and an assembly part. Regular hexagonal bosses are arranged at the two ends of the piston rod, three opposite faces of each boss are provided with a through pin hole, a through screw hole and a round rod respectively, and the pin holes and the screw holes have intersection points. The assembly part has three shapes: the first shape comprises a C-shaped frame, two opposite surfaces of the C-shaped frame are provided with through screw holes, the second shape comprises a C-shaped frame, two opposite surfaces of the C-shaped frame are provided with through pin holes, and the third shape is a clamping jaw or a clamping hoop; the assembly part is fixed with a piston or a connecting piece to be connected with the piston rod, and the piston rod is wider in application range and convenient to install.

Description

Technical Field

[0001] The utility model relates to the field of piston rod processing, in particular to a piston rod which is easy to assemble and disassemble. Background Art

[0002] In the current industrial extruders, the extrusion barrel movement of most extruders is driven by a piston cylinder. Due to comprehensive considerations of cost, manufacturing, layout and other factors, except for small-tonnage extruders that use a mobile cylinder piston rod directly connected to the extrusion barrel assembly, medium and large extruders basically have an extended connecting rod fixed to the front end of the cylinder piston rod of the barrel, and connected to the extrusion barrel assembly through the extended connecting rod to avoid the piston rod being too long, which increases the difficulty of manufacturing and maintenance and increases the cost.

[0003] At present, the connection between the piston rod of the extrusion cylinder moving cylinder and the extended connecting rod at its front end mainly adopts the method of matching the internal thread of the extended connecting rod with the external thread of the piston rod. However, this method has the following problems during use: 1. The thread anti-loosening is not ideal. The use of set screws to prevent loosening will either damage the thread or the anti-loosening is unreliable; the use of matching baffles to prevent loosening is not only inconvenient to match, but also requires re-matching when replacing related parts. 2. The processing of the connecting rod is costly. In order to offset the strength loss caused by the internal thread and reduce weight and force at the same time, the connecting rod usually adopts a T-shaped structure with a very short large diameter end. This stepped shaft structure causes an increase in processing volume and material waste. 3. Inconvenient disassembly and assembly. Due to structural limitations, when the connecting rod needs to be disassembled and assembled, the method of fixing the piston rod and rotating the connecting rod must be adopted. The connecting rods of medium and large extruders are large in size and weight, and the disassembly and assembly process is time-consuming and labor-intensive, extremely inconvenient and easy to damage the thread.

[0004] To this end, application number: CN201920799379.5 proposes a connecting device between a piston rod and a connecting rod to simplify the difficulty of disassembly and assembly of the piston rod and reduce costs.

[0005] Since the piston rod needs to be connected to the piston, and sometimes also needs to be connected to a connecting rod or other connecting parts for lengthening or driving, the connection structures of these connecting parts are different, so a universal and easy-to-install connection structure is needed. Summary of the invention

[0006] In order to make the piston rod match with pistons and connectors of various connection structures and facilitate installation, the utility model proposes a piston rod that is easy to load and unload, and its structure includes: a piston rod and an assembly part; regular hexagonal bosses are provided at both ends of the piston rod, and three opposite surfaces of the bosses are respectively provided with through pin holes, through screw holes, and round rods, and the pin holes and the screw holes have intersections; the assembly part includes three shapes: the first type includes: a C-shaped frame, and two opposite surfaces of the C-shaped frame are provided with through screw holes, the second type includes: a C-shaped frame, and two opposite surfaces of the C-shaped frame are provided with through pin holes, and the third type is a clamp or a clamp; the assembly part is fixed to the piston or connector to be connected with the piston rod.

[0007] Preferably, the distances between the pin hole, screw hole, round rod and the top of the boss are equal everywhere, and the axes of the pin hole, screw hole and round rod are perpendicular to the planes on which they are arranged.

[0008] Preferably, the axes of the pin hole, the screw hole and the round rod intersect and are perpendicular to the axis of the boss.

[0009] Preferably, the assembly part and the piston or the connecting part to which the piston rod is to be connected are an integral structure.

[0010] When the utility model is installing a piston or other connecting parts, according to the corresponding piston or connecting rod assembly parts to be connected, bolts can be used to cooperate with the screw holes of the boss to achieve a fixed connection, a fixing pin can be used to cooperate with the pin hole of the boss to achieve a movable connection, and a clamp or a clamp can be used to cooperate with a round rod to achieve a movable connection. The utility model has a wider application range and is easy to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 This is a schematic diagram of the piston rod after assembly with an assembly part.

[0013] Figure 2 A three-dimensional view of the piston rod end.

[0014] Figure 3 This is a front view of the piston rod end.

[0015] Figure 4 A top view of the piston rod end.

[0016] Figure 5 This is a schematic diagram of the piston rod after assembly with another assembly part.

[0017] In the figure: 1, piston rod; 2, boss; 3, pin hole; 4, screw hole; 5, round rod; 6, C-shaped frame; 7, bolt; 8, fixing pin. DETAILED DESCRIPTION

[0018] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0019] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0021] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0022] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0023] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. Example 1

[0024] The utility model discloses a piston rod that is easy to load and unload, and its structure comprises: a piston rod 1 and an assembly part; regular hexagonal bosses 2 are provided at both ends of the piston rod 1, and three opposite surfaces of the bosses 2 are respectively provided with a through pin hole 3, a through screw hole 4, and a round rod 5, and the pin hole 3 and the screw hole 4 have an intersection; the assembly part comprises three shapes: the first comprises: a C-shaped frame, and two opposite surfaces of the C-shaped frame 6 are provided with through screw holes 4, the second comprises: a C-shaped frame, and two opposite surfaces of the C-shaped frame 6 are provided with through pin holes 3, and the third is a clamp or a clamp; the assembly part is fixed to the piston or the connecting piece to be connected with the piston rod 1.

[0025] More specifically, the distances between the pin hole 3, the screw hole 4, the round rod 5 and the top of the boss 2 are always equal, and the axes of the pin hole 3, the screw hole 4, the round rod 5 are perpendicular to the planes on which they are arranged.

[0026] More specifically, the axes of the pin hole 3 , the screw hole 4 , and the round rod 5 intersect and are perpendicular to the axis of the boss 2 .

[0027] More specifically, the assembly part and the piston or the connecting part to which the piston rod 1 is to be connected are an integral structure.

[0028] When installing the piston or other connecting parts, the utility model can be installed according to the corresponding piston or connecting rod assembly parts to be connected. Figure 1 As shown in the figure, bolts 7 are used to cooperate with screw holes 4 of boss 2 to achieve fixed connection. At this time, the three inner sides of C-shaped frame 6 are in contact with boss. Figure 5 As shown, a fixing pin 8 is used in conjunction with the pin hole 3 of the boss 2 to achieve a movable connection. At this time, the two opposite inner side surfaces of the C-shaped frame 6 are in contact with the boss, and a distance is left between the inner top of the C-shaped frame 6 and the upper surface of the boss 2 to facilitate the rotation of the connector around the axis of the fixing pin 8. In addition, a clamp or a clamp can be used in conjunction with the round rod 5 to achieve a movable connection. The three shapes of assembly parts involved in this example are all integrated with the piston or other parts connected to the piston rod. As a result, the utility model has a wider range of applicability and is easy to install.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A piston rod that is easy to load and unload, characterized in that: include: Piston rod, assembly parts; regular hexagonal bosses are provided at both ends of the piston rod, and three opposite faces of the bosses are respectively provided with through pin holes, through screw holes, and round rods, and the pin holes and the screw holes have intersections; the assembly parts include three shapes: the first type includes: C-shaped frame, two opposite faces of the C-shaped frame are provided with through screw holes, the second type includes: C-shaped frame, two opposite faces of the C-shaped frame are provided with through pin holes, and the third type is a clamp or a clamp; the assembly parts are fixed to the piston or connecting piece to be connected to the piston rod.

2. The piston rod that is easy to assemble and disassemble according to claim 1, characterized in that: The distances between the pin hole, the screw hole, the round rod and the top of the boss are equal everywhere, and the axes of the pin hole, the screw hole and the round rod are perpendicular to the planes on which they are arranged.

3. The piston rod that is easy to assemble and disassemble according to claim 2, characterized in that: The axes of the pin hole, the screw hole and the round rod intersect and are perpendicular to the axis of the boss.

4. The piston rod that is easy to assemble and disassemble according to claim 3 is characterized in that: The assembly part is an integral structure with the piston or the connecting part to which the piston rod is to be connected.

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