Strength detection mechanism for PE corrugated pipe

Abstract

The utility model provides a strength detection mechanism for a PE corrugated pipe, which comprises a testing machine which comprises a testing machine frame main body and a cross beam sliding on the testing machine frame main body; the inner diameter measuring assembly comprises an upper cross rod and a lower cross rod; sliding grooves are formed in the two ends of the upper cross rod, and the sliding grooves are nested in connecting rods arranged on the cross beams; the connecting rod comprises a sleeve rod body and a pull rod sliding on the sleeve rod body, a limiting block is arranged on the pull rod and extends out of the side wall of the sleeve rod body, a guide groove allowing the limiting block to pass through is further formed in the sliding groove, and after the limiting block penetrates through the guide groove, a locking piece arranged on the upper cross rod is pushed into the guide groove, and the limiting block is locked by the locking piece. The limiting block abuts against the locking piece. The utility model provides the utility model.

Description

Technical Field

[0001] The utility model belongs to the field of PE corrugated pipe performance testing, in particular to a strength testing mechanism for PE corrugated pipes. Background Art

[0002] PE corrugated pipe, that is, a plastic protective sleeve extruded from polyethylene, is also called a corrugated pipe because of its annular corrugation inside and outside. The strength test of PE corrugated pipe is mainly carried out by a universal testing machine to test the performance of the ring stiffness.

[0003] During the performance test of the ring stiffness of the PE corrugated pipe, the inner diameter change of the PE corrugated pipe during the test is measured by an inner diameter measuring instrument. Generally, two sets of cross bars are pressed on the inner wall of the PE corrugated pipe respectively and measured in conjunction with a pull-wire encoder. In the prior art, the upper cross bar pressed close to the cross beam of the universal testing machine mainly relies on the connecting rod on the cross beam to provide a fulcrum. During the assembly process, the upper cross bar needs to be nested on the connecting rod first, and then the spring, limit bolts and other components are assembled in turn. The operation process is cumbersome and not convenient to use. Utility Model Content

[0004] The utility model provides a strength detection mechanism for a PE corrugated pipe, aiming to solve the problem in the prior art that an upper cross bar has a complicated operation process and is not convenient to use during the assembly process.

[0005] The utility model is implemented in this way: a strength detection mechanism for a PE corrugated pipe comprises:

[0006] A testing machine, the testing machine comprising a testing machine frame body and a crossbeam sliding on the testing machine frame body;

[0007] An inner diameter measuring assembly, the inner diameter measuring assembly comprising an upper cross bar and a lower cross bar; sliding grooves are provided at both ends of the upper cross bar, and the sliding grooves are nested in the connecting rods provided on the cross beam;

[0008] The connecting rod includes a sleeve rod body and a pull rod sliding on the sleeve rod body. The pull rod is provided with a limit block, and the limit block extends from the side wall of the sleeve rod body. The sliding groove is also provided with a guide groove for accommodating the limit block. When the limit block passes through the guide groove, the locking piece provided on the upper cross bar is pushed into the guide groove, and the limit block is abutted against the locking piece.

[0009] Preferably, the pull rod comprises a guide rod, a traction rod and a limiting ring;

[0010] The guide rod is adapted to the sliding area provided at the center of the sleeve rod body, and the limit blocks are provided on both sides of the guide rod;

[0011] One end of the traction rod is connected to the guide rod, and the other end is provided with a through hole on the side of the sleeve rod body away from the cross beam and extends out of the sleeve rod body;

[0012] The limiting ring is arranged on the portion of the traction rod extending out of the sleeve rod body, and a spring is arranged on the portion of the traction rod located inside the sleeve rod body.

[0013] Preferably, the sliding area is communicated with a limiting sliding groove provided on the side wall of the sleeve rod body, and the limiting block extends out of the sleeve rod body from the limiting sliding groove.

[0014] Preferably, a pull ring is provided at the end of the traction rod away from the guide rod.

[0015] Preferably, the locking member comprises a locking slide block and a guide slide rail;

[0016] The upper cross bar is provided with a sliding area on one side close to the sliding groove, the guide rail is arranged in the sliding area, and the locking slider slides on the guide rail;

[0017] The guide groove is provided with a limiting opening, the locking slider is provided with a locking rod, and the locking rod extends from the limiting opening into the guide groove.

[0018] Preferably, the sliding area is communicated with a sliding opening provided on the side wall of the upper cross bar, and the locking slider extends out of the upper cross bar from the sliding opening.

[0019] Preferably, a base rod is provided on the main body of the testing machine frame, and the lower cross bar is assembled on the base rod.

[0020] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0021] The strength detection mechanism of the PE corrugated pipe provided by the utility model adopts a sleeve structure through the connecting rod, allows the pull rod to slide inside the sleeve rod body, allows the limit block to pass through the guide groove, and then pushes the locking piece provided inside the upper cross bar into the guide groove, and uses a spring to hold the limit block against the locking piece. The number of components between the connecting rod and the upper cross bar is reduced through structural improvement, and the complicated assembly procedure in the prior art is replaced by a simple pulling operation, thereby reducing the complexity of the operation process and improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a strength detection mechanism for a PE corrugated pipe provided by the utility model.

[0023] Figure 2 The utility model is a schematic diagram of the structure of an upper cross bar and a connecting rod of a strength detection mechanism of a PE corrugated pipe.

[0024] Figure 3 The utility model is a schematic diagram of the internal structure of a connecting rod of a strength detection mechanism of a PE corrugated pipe.

[0025] Figure 4 The utility model is a structural schematic diagram of a middle upper cross bar of a strength detection mechanism of a PE corrugated pipe provided by the utility model.

[0026] Figure 5 The utility model is a schematic diagram of the internal structure of an upper cross bar of a strength detection mechanism for a PE corrugated pipe.

[0027] Description of reference numerals:

[0028] 100, testing machine; 110, testing machine frame body; 120, crossbeam;

[0029] 210, upper cross bar; 211, sliding groove; 2111, guide groove; 2112, limit opening; 212, locking slider; 2121, locking rod; 213, guide rail; 220, lower cross bar;

[0030] 300, connecting rod; 310, sleeve rod body; 320, pull rod; 321, limit block; 322, guide rod; 323, traction rod; 324, limit ring; 330, pull ring; 340, spring;

[0031] 400. Base rod. DETAILED DESCRIPTION

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0033] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] The present utility model provides a strength detection mechanism for a PE corrugated pipe, such as Figure 1-Figure 5 As shown, the strength detection mechanism of the PE corrugated pipe includes:

[0035] A testing machine 100, wherein the testing machine 100 comprises a testing machine frame body 110 and a crossbeam 120 sliding on the testing machine frame body 110;

[0036] An inner diameter measuring assembly, the inner diameter measuring assembly comprising an upper crossbar 210, a lower crossbar 220 and a pull rope 2 encoder connected between the upper crossbar 210 and the lower crossbar 220;

[0037] The cross beam 120 is provided with a connecting rod 300, and the connecting rod 300 includes a sleeve rod body 310 and a pull rod 320. The pull rod 320 slides inside the sleeve rod body 310 and extends out of the sleeve rod body 310 from one end of the sleeve rod body 310 away from the cross beam 120. The pull rod 320 is provided with a limit block 321, and the limit block 321 extends from the side wall of the sleeve rod body 310. The upper cross bar 210 is pressed against the inner wall of the PE corrugated pipe under the support of the limit block 321.

[0038] Wherein, sliding grooves 211 are provided at both ends of the upper cross bar 210, and the sliding groove 211 is also provided with a guide groove 2111 for accommodating the passage of the limit block 321. When the end of the connecting rod 300 away from the cross beam 120 is inserted into the sliding groove 211, the limit block 321 is passed through the guide groove 2111 by pulling the pull rod 320, and then the locking piece provided inside the upper cross bar 210 is pushed into the guide groove 2111 to prevent the limit block 321 from passing through the guide groove 2111 again. Under the abutment of the limit block 321 on the locking piece, the connecting rod 300 completes the elastic support of the upper cross bar 210, meeting the measurement needs during the equipment experiment;

[0039] In the present application, the testing machine 100 is a universal testing machine structure in the prior art. The crossbeam 120 mainly utilizes the transmission screw provided inside the testing machine frame body 110 to generate power to achieve displacement. The testing machine 100 also includes other auxiliary measuring equipment, such as sensors, computers and other structures. The relevant auxiliary equipment adopts mature existing structures and principles, which will not be described in detail in this application. The upper crossbar 210 and the lower crossbar 220 in the inner diameter measuring assembly are connected by the connecting rod 300 and the base rod 400 provided on the testing machine frame body 110 respectively;

[0040] The connecting rod 300 described here adopts a sleeve structure, and the corresponding elastic component is pre-assembled inside the equipment. The operation procedures of the corresponding components of the experimental process are carried out with the help of the locking piece. In the actual operation process, the sliding groove 211 of the upper cross bar 210 is first sleeved on the connecting rod 300, and the upper cross bar 210 is continuously pushed toward the cross beam 120 and abutted against the inner wall of the PE corrugated pipe (this process is carried out on the basis that the lower cross bar 220 and the PE corrugated pipe have been fixed). When it is pushed to a certain position, the pull rod 320 is pulled, and the pull rod 320 moves away from the cross beam 120, and the pull rod 320 is located at the pull rod 3 The limit block 321 on 20 will pass through the sliding groove 211 with the help of the guide groove 2111. After the limit block 321 passes through the upper cross bar 210, the locking piece will be pushed into the sliding groove 211, so that the locking piece will close the guide groove 2111. At this time, the pull rod 320 will abut against the side of the upper cross bar 210 away from the cross beam 120, and the upper cross bar 210 will also be pressed against the inner wall of the PE corrugated pipe under the abutment. During the experiment, the upper cross bar 210 will be always abutted against the inner wall of the PE corrugated pipe under the action of the pull rod 320, and the deformation between the upper cross bar 210 and the lower cross bar 220 is recorded;

[0041] In the present application, data is measured between the upper cross bar 210 and the lower cross bar 220 by a draw wire encoder of the prior art equipment. The main body of the draw wire encoder is arranged on the lower cross bar 220. The draw wire of the draw wire encoder is connected to the upper cross bar 210 after the assembly work is completed. During the experiment, the connecting rod 300 will move along with the cross beam 120. Although the connecting rod 300 will be away from the upper cross bar 210, the draw wire 320 will always be supported on the upper cross bar 210 under the action of elastic force until the PE bellows is deformed to compress the upper cross bar 210 to move. The draw wire encoder mainly records the movement amount of the upper cross bar 210 when the PE bellows is deformed to feedback the change of the inner diameter.

[0042] As a preferred implementation in this embodiment, the locking member includes a locking slider 212 and a guide rail 213;

[0043] The upper cross bar 210 is provided with a sliding area near the sliding groove 211, the guide rail 213 is arranged in the sliding area, the sliding area is communicated with the sliding opening provided on the side wall of the upper cross bar 210, and the locking slider 212 sliding on the guide rail 213 extends out of the upper cross bar 210 from the sliding opening;

[0044] The guide groove 2111 is provided with a limiting opening 2112, and the locking slider 212 is provided with a locking rod 2121, and the locking rod 2121 extends from the limiting opening 2112 into the guide groove 2111;

[0045] In this embodiment, the locking rod 2121 can move in and out of the guide groove 2111 under the push of the locking slider 212; the locking rod 2121 here serves to close the guide groove 2111, a section of the guide rail 213 close to the sliding groove 211 is made of a magnet, and the locking slider 212 is made of an iron material with magnetic attraction ability. During the operation, magnetic attraction is used as the limiting force of the locking slider 212 to prevent the locking slider 212 from slipping and affecting the test accuracy;

[0046] As a preferred implementation in this embodiment, the pull rod 320 includes a guide rod 322, a traction rod 323 and a limit ring 324;

[0047] The guide rod 322 is adapted to the sliding area provided at the center of the sleeve rod body 310, and the limit blocks 321 are provided on both sides of the guide rod 322. The limit blocks 321 extend out of the sleeve rod body 310 from the limit sliding groove provided on the side wall of the sleeve rod body 310;

[0048] One end of the traction rod 323 is connected to the guide rod 322, and the other end is provided with a through hole on the side of the sleeve rod body 310 away from the cross beam and extends out of the sleeve rod body 310. The limiting ring 324 is provided on the portion of the traction rod 323 extending out of the sleeve rod body 310, and a spring 340 is provided on the portion of the traction rod 323 located inside the sleeve rod body 310.

[0049] In this embodiment, the spring 340 helps the pull rod 320 to obtain elastic force. The main function of the spring 340 is to pull the pull rod 320 back into the sleeve rod body 310. Therefore, during the experiment, since the pull rod 320 is pulled out of the sleeve rod body 310, the connecting rod 300 will move downward as the experiment proceeds, and the upper cross bar 210 will not move when it is not deformed. With the help of the spring 340, the pull rod 320 will retract into the connecting rod 300, so that the upper cross bar 210 and the bellows continue to maintain contact, and the situation that the bottom of the connecting rod 300 lacks supporting force and cannot continue to resist will not occur due to the downward movement of the connecting rod 300;

[0050] The traction rod 323 is provided with a pull ring 330 at the end away from the guide rod 322, which is used to apply tension to allow the spring 340 to store elastic potential energy to meet the installation requirements during the experiment;

[0051] As a preferred implementation in this embodiment, the base rod 400 is a threaded column, and screw holes are provided at both ends of the lower cross bar 220. During the installation process, the lower cross bar 220 can be assembled on the base rod 400 by means of hand-tightening nuts;

[0052] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0053] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A strength detection mechanism for a PE corrugated pipe, characterized in that: include: A testing machine, the testing machine comprising a testing machine frame body and a crossbeam sliding on the testing machine frame body; An inner diameter measuring assembly, the inner diameter measuring assembly comprising an upper cross bar and a lower cross bar; sliding grooves are provided at both ends of the upper cross bar, and the sliding grooves are nested in the connecting rods provided on the cross beam; The connecting rod includes a sleeve rod body and a pull rod sliding on the sleeve rod body. The pull rod is provided with a limit block, and the limit block extends from the side wall of the sleeve rod body. The sliding groove is also provided with a guide groove for accommodating the limit block. When the limit block passes through the guide groove, the locking piece provided on the upper cross bar is pushed into the guide groove, and the limit block is abutted against the locking piece.

2. A strength detection mechanism for a PE corrugated pipe as claimed in claim 1, characterized in that: The pull rod comprises a guide rod, a traction rod and a limiting ring; The guide rod is adapted to the sliding area provided at the center of the sleeve rod body, and the limit blocks are provided on both sides of the guide rod; One end of the traction rod is connected to the guide rod, and the other end is provided with a through hole on the side of the sleeve rod body away from the cross beam and extends out of the sleeve rod body; The limiting ring is arranged on the portion of the traction rod extending out of the sleeve rod body, and a spring is arranged on the portion of the traction rod located inside the sleeve rod body.

3. A strength detection mechanism for a PE corrugated pipe as claimed in claim 2, characterized in that: The sliding area is communicated with a limiting sliding groove provided on the side wall of the sleeve rod body, and the limiting block extends out of the sleeve rod body from the limiting sliding groove.

4. A strength detection mechanism for a PE corrugated pipe as claimed in claim 3, characterized in that: The traction rod is provided with a pull ring at the end away from the guide rod.

5. A strength detection mechanism for a PE corrugated pipe as claimed in claim 4, characterized in that: The locking member comprises a locking slide block and a guide slide rail; The upper cross bar is provided with a sliding area on one side close to the sliding groove, the guide rail is arranged in the sliding area, and the locking slider slides on the guide rail; The guide groove is provided with a limiting opening, the locking slider is provided with a locking rod, and the locking rod extends from the limiting opening into the guide groove.

6. A strength detection mechanism for a PE corrugated pipe as claimed in claim 5, characterized in that: The sliding area is communicated with a sliding opening provided on the side wall of the upper cross bar, and the locking slide block extends out of the upper cross bar from the sliding opening.

7. A strength detection mechanism for a PE corrugated pipe as claimed in claim 6, characterized in that: A base rod is arranged on the main body of the testing machine frame, and the lower cross bar is assembled on the base rod.

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