Axial strength testing mechanism for plastic composite pipeline

Abstract

The utility model discloses a plastic composite pipeline axial strength testing mechanism which comprises a plastic composite pipe, tensile testing mechanisms arranged at the two ends of the plastic composite pipe and a stress sensor arranged on the plastic composite pipe. The tensile testing mechanism comprises a blind plate, a flange end at least arranged at one end of the plastic composite pipe, a split ring arranged outside the flange end in a sleeving mode and attached to the flange end and a flange plate arranged outside the split ring, and the blind plate and the flange plate are connected through a plurality of bolts and connected in a locked mode through fasteners. According to the axial strength testing mechanism for the plastic composite pipeline, after the chuck of the tensile testing machine is stably connected with the clamp rod, the tensile testing machine starts to operate, and axial drawing loads borne by the plastic composite pipeline and a connector of the plastic composite pipeline can be conveniently detected.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the tensile test of plastic composite pipeline, in particular to a kind of plastic composite pipeline axial strength testing mechanism. BACKGROUND

[0002] Isotropic plastic pipeline can be cut along the axial direction of pipeline and made into I-shaped tensile test sample, and the two ends of the sample can be directly clamped on the clamp of tensile testing machine for axial tension test, and then the axial pulling load of the pipeline can be calculated.

[0003] When anisotropic reinforced thermoplastic composite pipeline (RTP) is cut along the axial direction of pipeline, the reinforcing layer of RTP is damaged, which cannot truly reflect the axial pulling load of RTP, so the axial tension test of RTP sample as a whole is needed to obtain the axial pulling load of RTP. Therefore, it is necessary to design and manufacture an RTP axial strength testing mechanism for clamping and testing by the tensile testing machine. SUMMARY

[0004] The utility model discloses to the prior art's insufficient, the utility model provides a kind of plastic composite pipeline axial strength testing mechanism, the chuck of tensile testing machine is stably connected with clamp rod, after tensile testing machine starts to operate, the axial pulling load that plastic composite pipe and its joint can be conveniently detected, which brings great convenience for production and use.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of a kind of plastic composite pipeline axial strength testing mechanism, comprising: plastic composite pipe, tensile test mechanism arranged at the both ends of plastic composite pipe and stress sensor arranged on plastic composite pipe, the tensile test mechanism includes blind plate, at least the flange end head arranged on one end of plastic composite pipe, the split ring that is set to the flange end head outer and is pasted with flange end head and the flange disc piece that is arranged outside split ring, the blind plate is connected by a plurality of bolts between flange disc piece and is locked by fastener connection, the blind plate is provided with clamp rod connected with tensile testing machine.

[0006] In a preferred embodiment of the utility model, the flange end head is integrally formed at both ends of the plastic composite pipe by injection molding.

[0007] In a preferred embodiment of the utility model, the plastic composite pipe is a section of plastic composite pipe or a plastic composite pipeline connected by electric fusion connection, flange connection and other connection methods.

[0008] In a preferred embodiment of the utility model, the clamp rod is a rod structure or a plate structure.

[0009] In a preferred embodiment of the present application, the number of split rings is 2-5.

[0010] In a preferred embodiment of the present application, a through hole is formed in the blind plate, and the clamp rod is locked and connected with the blind plate through a fastening nut after penetrating through the through hole.

[0011] In a preferred embodiment of the present application, the stress sensor is connected with a data acquisition and processing system signal of the tensile testing machine, and is used for collecting tensile data of the plastic composite pipe.

[0012] The present application has the following beneficial effects: after the chuck of the tensile testing machine is stably connected with the clamp rod, the tensile testing machine starts to run, and axial tensile load borne by the plastic composite pipe and its joint can be conveniently detected, thereby bringing great convenience for production and use. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without creative labor, and the drawings include:

[0014] Figure 1 Fig. 1 is a structural schematic view of a plastic composite pipe axial strength testing mechanism of the present application. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0016] Please refer to Figure 1The utility model discloses a kind of axial strength test mechanisms of plastic composite pipeline, comprising: plastic composite pipe 1, tensile testing mechanism being arranged at the both ends of plastic composite pipe and stress sensor 2 being arranged on plastic composite pipe, plastic composite pipe is divided into hot melt butt joint and flange connection joint according to its joint connection form, two kinds of plastic composite pipe joints to be tested should be prepared using two plastic composite pipes with plastic end at both ends, specifically, tensile testing mechanism includes blind plate 3, at least flange end 4 being arranged on the one end of plastic composite pipe, split ring 5 being set on the outer wall of flange end and being attached with flange end, and flange plate 6 being arranged outside split ring, blind plate and flange plate are connected by a plurality of bolts 7 and locked connection by fastener 8, clamp rod 9 connected with tensile testing machine is arranged on blind plate, wherein, flange end is integrally formed at both ends of plastic composite pipe by injection molding, the outer wall of flange end has first inclined surface, the inner wall of split ring has second inclined surface matched with first inclined surface, the number of split ring is 2-5, when installing, first, clamp rod and blind plate are assembled and fixed into an integral whole, then split ring is sleeved on the outer wall of flange end and attached with it, finally, flange plate is installed, and flange plate and blind plate are locked and fixed using bolt, nut and other fasteners.

[0017] Specifically, through hole is formed in blind plate, clamp rod is locked and connected with blind plate by fastening nut 10 after penetrating through through hole, clamp rod is processed into bar structure or the shape of bar structure and plate structure according to the form of clamping head of tensile testing machine, so that the clamping head of tensile testing machine can be stably clamped, after assembly is completed, tensile testing machine starts to operate, and axial pulling load borne by plastic composite pipe and its joint is detected, wherein, the total length of axial strength test mechanism is at least 200mm less than the stroke of tensile testing machine.

[0018] Specifically, stress sensor is connected with the signal of data acquisition and processing system of tensile testing machine, for collecting tensile data of plastic composite pipe, in test process, tensile testing machine provides constant axial tension for plastic composite pipe, stress sensor records joint axial force, bearing time and other data in test process, and test stops when test duration reaches preset requirement time or strength damage occurs to plastic composite pipe or joint.

[0019] The utility model discloses the clamping head of tensile testing machine and clamp rod are stably connected, and tensile testing machine starts to operate, and axial pulling load borne by plastic composite pipe and its joint can be conveniently detected, which brings great convenience for production and use.

[0020] The above-mentioned is only the embodiment of the utility model, and does not limit the patent range of the utility model, and equivalent structure or equivalent process transformation using the utility model specification content, or direct or indirect application in other related technical fields, are all included in the patent protection range of the utility model.

Claims

1. A plastic composite pipe axial strength testing mechanism, characterized by, The application relates to a plastic composite pipe, a tensile testing mechanism arranged at two ends of the plastic composite pipe and a stress sensor arranged on the plastic composite pipe. The flange end is integrally formed at two ends of the plastic composite pipe through injection molding.

2. The axial strength testing mechanism for plastic composite pipe according to claim 1, wherein The plastic composite pipe is a section of plastic composite pipe or a plastic composite pipe connected by electric fusion connection or flange connection.

3. The axial strength testing mechanism for a plastic composite pipe according to claim 2, wherein The clamp rod is in a rod structure or a plate structure.

4. The axial strength testing mechanism for plastic composite pipe of claim 1, wherein, The number of the split rings is 2-5.

5. The axial strength testing mechanism for plastic composite pipe of claim 1, wherein, A through hole is arranged on the blind plate, the clamp rod is locked with the blind plate through a fastening nut after penetrating through the through hole.

6. The axial strength testing mechanism for plastic composite pipe of claim 1, wherein, The stress sensor is connected with a signal of a data acquisition and processing system of the tensile testing machine, and is used for acquiring tensile data of the plastic composite pipe.

7. The axial strength testing mechanism for plastic composite pipe of claim 1, wherein, ​

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