Stretching equipment for corrugated pipe head test

Abstract

The utility model discloses stretching equipment for corrugated pipe head testing, which comprises a corrugated pipe, the corrugated pipe is provided with a pipe head, and the stretching equipment comprises a base; the two stretching frames in the same pair are arranged on the base; the transverse frames are movably arranged between the two stretching frames in the same pair; the stretching drive is arranged on the transverse frame; the pipe head connecting assembly is connected with the stretching drive, and the pipe head connecting assembly is connected with the pipe head; and the corrugated pipe connecting assembly is connected with the corrugated pipe, and the corrugated pipe connecting assembly is connected with the base. The corrugated pipe is connected through the corrugated pipe connecting assembly firstly, then the pipe head is connected through the pipe head connecting assembly, and after it is ensured that the connecting structure is stable, a tensile test is conducted on the corrugated pipe head. The corrugated pipe and the pipe head are connected through the corrugated pipe connecting assembly and the pipe head connecting assembly respectively, so that the corrugated pipe head is not prone to damage in the stretching process, and economic losses caused by testing are avoided as much as possible.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bellows head stretching equipment, in particular to a stretching equipment for bellows head testing. BACKGROUND

[0002] The bellows head comprises a metal bellows and a pipe head, the pipe head is pre-set on the bellows, which is conducive to the seamless connection between the bellows, and the various mechanical properties of the bellows head need to be tested after the production and molding, and the stretching equipment is used for testing the tensile property of the bellows head.

[0003] In the related art, the bellows head stretching equipment generally does not contain a specific clamp, which leads to the fact that the bellows head is easily damaged in the process of stretching test, causing certain economic loss.

[0004] Therefore, it is urgent to provide a stretching equipment for bellows head testing, which uses a specific clamp to clamp the bellows head, so that the bellows head is not easily damaged in the process of stretching. CONTENT OF THE INVENTION

[0005] The present application provides a stretching equipment for bellows head testing, which aims to solve the problem that the bellows head stretching equipment in the prior art generally does not contain a specific clamp, which leads to the fact that the bellows head is easily damaged in the process of stretching test, causing certain economic loss.

[0006] To achieve the above-mentioned purpose, the present application provides a stretching equipment for bellows head testing, which comprises a bellows, the bellows is provided with a pipe head, and the stretching equipment comprises: a base; a pair of stretching frames, the two stretching frames of the same pair are arranged on the base; a cross frame, the cross frame is movably arranged between the two stretching frames of the same pair; a stretching drive, the stretching drive is arranged on the cross frame; a pipe head connecting assembly, the pipe head connecting assembly is connected to the stretching drive, and the pipe head connecting assembly is connected to the pipe head; a bellows connecting assembly, the bellows connecting assembly is connected to the bellows, and the bellows connecting assembly is connected to the base.

[0007] In some embodiments, the pipe head connecting assembly comprises: a first connecting piece, one end of the first connecting piece is provided with a first connecting hole, and the other end of the first connecting piece is provided with a second connecting hole; a fixing piece, the fixing piece is arranged at one end of the first connecting piece provided with the second connecting hole, the fixing piece is provided with a third connecting hole, and a second fastener is arranged between the fixing piece and the first connecting piece; and the fixing piece is provided with a mounting groove in communication with the third connecting hole.

[0008] In some embodiments, the corrugated pipe connecting assembly comprises: a second connecting piece, one end of the second connecting piece is provided with a fourth connecting hole; a connecting barrel, the other end of the second connecting piece is provided with the connecting barrel; a pair of clamping petals, the two clamping petals of the same pair are sleeved on the outside of the corrugated pipe, and the two clamping petals of the same pair are located in the connecting barrel; a clamping groove, the side of the clamping petals facing the corrugated pipe is provided with a clamping groove matched with the corrugated pipe; a threaded sleeve, the threaded sleeve is provided at the end of the connecting barrel away from the second connecting piece, and the threaded sleeve partially contacts the clamping petals.

[0009] In some embodiments, the corrugated pipe connecting assembly further comprises: a first fastener, the connecting barrel is arranged on the second connecting piece through the first fastener.

[0010] In some embodiments, the corrugated pipe connecting assembly further comprises: an anti-loosening groove, the anti-loosening groove is arranged at the end of the second connecting piece away from the third connecting hole, and the anti-loosening agent is arranged between the second connecting piece and the threaded sleeve.

[0011] In some embodiments, further comprising: a screw rod, the screw rod is arranged on the stretching frame; a lead screw nut, the lead screw nut is sleeved on the screw rod, and the lead screw nut is connected to the cross frame; an adjusting drive, the adjusting drive is used to drive the screw rod to rotate.

[0012] The technical scheme of the present application provides a stretching device for testing corrugated pipe heads, comprising a corrugated pipe provided with a pipe head, the stretching device comprising: a base; a pair of stretching frames, the two stretching frames of the same pair being arranged on the base; a cross frame, the cross frame being movably arranged between the two stretching frames of the same pair; a stretching drive, the stretching drive being arranged on the cross frame; a pipe head connecting assembly, the pipe head connecting assembly being connected to the stretching drive and the pipe head; a corrugated pipe connecting assembly, the corrugated pipe connecting assembly being connected to the corrugated pipe and the base. During the stretching test of the corrugated pipe head, the corrugated pipe is first connected through the corrugated pipe connecting assembly, and then the pipe head is connected through the pipe head connecting assembly. After ensuring the stability of the connection structure, the stretching drive outputs a stretching force to perform the stretching test on the corrugated pipe head. The corrugated pipe and the pipe head are respectively connected through the corrugated pipe connecting assembly and the pipe head connecting assembly, so that the corrugated pipe head is not easily damaged during stretching, and economic losses caused by the test are avoided as much as possible. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical schemes in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor, wherein:

[0014] Figure 1 It is a perspective structural schematic diagram of a stretching device for testing corrugated pipe heads in an embodiment of the present application.

[0015] Figure 2 It is a perspective view of the pipe head connecting assembly and the corrugated pipe connecting assembly in an embodiment of the present application.

[0016] Figure 3 It is a sectional view of the pipe head connecting assembly and the corrugated pipe connecting assembly in an embodiment of the present application.

[0017] Figure 4 It is a perspective view of the pipe head connecting assembly and the corrugated pipe connecting assembly in an embodiment of the present application. Figure 3 It is a partial enlarged view of part A.

[0018] Figure 5 It is an exploded view of the pipe head connecting assembly and the corrugated pipe connecting assembly in an embodiment of the present application.

[0019] In the figure: base 1, stretching frame 2, cross frame 3, screw rod 4, stretching drive 5, output end 6, second connecting piece 7, fourth connecting hole 71, limiting surface 72, connecting cylinder 8, anti-loosening groove 81, threaded sleeve 9, corrugated pipe 10, pipe head 101, first connecting piece 11, first connecting hole 111, fixing piece 12, first fastener 13, clamping piece 14, clamping groove 141. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications will also change accordingly.

[0022] It should also be noted that when an element is referred to as being “fixed to” or “set on” another element, it can be directly on the other element or can have a middle element. When an element is referred to as being “connected” to another element, it can be directly connected to the other element or can have a middle element.

[0023] In addition, the descriptions involving "first", "second", etc. in the present application are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope required by the present application.

[0024] Reference Figure 1 As shown in the drawings, the present application provides a kind of stretch equipment for bellows head test, including bellows 10, bellows 10 is provided with pipe head 101, and the stretch equipment includes: base 1;A pair of stretching frame 2, the same pair of two stretching frame 2 is arranged in base 1;Cross frame 3, cross frame 3 is movably arranged between the same pair of two stretching frame 2;Stretch drive 5, stretch drive 5 is arranged in cross frame 3;Pipe head connecting assembly, pipe head connecting assembly connects stretch drive 5, and pipe head connecting assembly connects pipe head 101;Bellows connecting assembly, bellows connecting assembly connects bellows 10, and bellows connecting assembly connects base 1.

[0025] Wherein, base 1 is the structural basis of a kind of stretch equipment for bellows head test, other structures on a kind of stretch equipment for bellows head test are directly or indirectly installed on base 1.A pair of stretching frame 2 is the structural basis of cross frame 3 and stretch drive 5, pipe head connecting assembly is used to connect pipe head 101, and connect stretch drive 5, bellows connecting assembly is used to connect bellows 10, and connect base 1, the tensile force is exported by stretch drive 5, and the bellows head is fixed by pipe head connecting assembly and bellows connecting assembly, the tensile test of bellows head is realized.

[0026] Specifically, in the process of doing tensile test to bellows head, bellows 10 is connected by bellows connecting assembly first, then pipe head 101 is connected by pipe head connecting assembly, after ensuring that the connecting structure is stable, stretch drive 5 outputs tensile force, and the test to bellows head is carried out.Bellows 10 and pipe head 101 are connected by bellows connecting assembly and pipe head connecting assembly respectively, so that bellows head is not easy to be damaged in the process of stretching, and economic loss caused by test is avoided as far as possible.

[0027] In detail, stretch drive 5 is a hydraulic cylinder, base 1 is also connected with hydraulic station and control panel, for controlling the progress of tensile test.

[0028] Wherein, the material of base 1, stretching frame 2 and cross frame 3 is selected from corrosion-resistant alloy such as stainless steel, which has good mechanical properties and excellent corrosion resistance, and helps a kind of stretch equipment for bellows head test to adapt to various harsh environments.

[0029] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 5 , in some embodiments, the pipe head connecting assembly comprises: a first connecting piece 11, one end of the first connecting piece 11 is provided with a first connecting hole 111, the first connecting piece 11 is connected with the output end 6 of the stretching drive 5 through the first connecting hole 111, the other end of the first connecting piece 11 is provided with a second connecting hole, the first connecting piece 11 is provided with a cavity for inserting the corrugated pipe head, the cavity is communicated with the second connecting hole, and the inner diameter of the second connecting hole is greater than the outer diameter of the corrugated pipe 10 and the outer diameter of the pipe head 101, the corrugated pipe head can be inserted into the first connecting piece 11 from the bottom of the first connecting piece 11 along the second connecting hole; a fixing piece 12, the fixing piece 12 is arranged at one end of the first connecting piece 11 provided with the second connecting hole, the fixing piece 12 is provided with a third connecting hole, and the fixing piece 12 is provided with a mounting groove communicated with the third connecting hole. The fixing piece 12 is mounted on the first connecting piece 11 through a second fastener. After the corrugated pipe head is inserted into the first connecting piece, the fixing piece 12 is started to be assembled, because the outer diameter of the pipe head 101 is greater than the outer diameter of the corrugated pipe 10, and the inner diameter of the third connecting hole is greater than the outer diameter of the corrugated pipe 10 and less than the outer diameter of the pipe head 101, after the fixing piece 12 is mounted, the pipe head 101 will abut against the fixing piece 12, so as to realize the fixation of the pipe head 101. The fixing piece 12 is substantially C-shaped, the width of the mounting groove is slightly greater than the diameter of the corrugated pipe 10, when the fixing piece 12 is mounted, the mounting groove is aligned with the corrugated pipe 10, the fixing piece 12 is transversely moved to make the third connecting hole and the second connecting hole substantially coaxial, at this time, the fixing piece 12 can be locked through the second fastener, and the second fastener is preferably a screw.

[0030] In the embodiment, the first connecting piece 11 comprises end plates at two ends, and a connecting plate is arranged between the end plates, the end plates and the connecting plate are an integral structure, the first connecting hole 111 and the second connecting hole are arranged on two different end plates, and the above structure design is beneficial to the insertion of the corrugated pipe head. Of course, the specific structure of the first connecting piece 11 is not limited here, and the first connecting piece 11 can also be other structures having the first connecting hole 111 and the second connecting hole and capable of inserting the corrugated pipe head.

[0031] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 5As shown in some embodiments, the corrugated pipe connecting assembly comprises: a second connecting piece 7, one end of the second connecting piece 7 is provided with a fourth connecting hole 71, the second connecting piece 7 is installed on the base 1 through the fourth connecting hole 71, preferably the second connecting piece 7 is installed on the base 1 through the third fastener and the fourth connecting hole 71; a connecting cylinder 8, the other end of the second connecting piece 7 is provided with the connecting cylinder 8, the second connecting piece 7 comprises an end plate and two connecting plates, the two connecting plates are used to limit the coaxiality between the second connecting piece 7 and the connecting cylinder 8, and the two connecting plates are provided with limiting surfaces 72 limiting the insertion depth of the connecting cylinder 8; a pair of clamping petals 14, the same pair of two clamping petals 14 are sleeved on the outside of the corrugated pipe 10, and the same pair of two clamping petals 14 are located in the connecting cylinder 8; a clamping groove 141, one side of the clamping petal 14 towards the corrugated pipe 10 is provided with the clamping groove 141 matched with the corrugated pipe 10; a threaded sleeve 9, the threaded sleeve 9 is arranged at the end of the connecting cylinder 8 away from the second connecting piece 7, and the threaded sleeve 9 partially contacts the clamping petal 14. The threaded sleeve 9 is used to limit the clamping petal 14 from coming out of the connecting cylinder 8. The corrugated pipe connecting assembly further comprises: a first fastener 13, the connecting cylinder 8 is arranged on the second connecting piece 7 through the first fastener 13. Different clamping petals 14 can be replaced to adapt to different corrugated pipes 10, thereby enhancing the practicability of the stretching device.

[0032] In the embodiment, the installation steps of the corrugated pipe head are as follows: first, the first connecting piece 11 is installed on the output end 6 of the stretching drive 5, the second connecting piece 7 is installed on the base 1, the cross frame 3 is moved upwards and drives the stretching drive 5 and the first connecting piece 11 to move upwards, at this time, a pair of clamping petals 14 are sleeved on the corrugated pipe 10 at a proper position, then the clamping petals 14 and the corrugated pipe 10 are put into the connecting cylinder 8, the movement of the clamping petals 14 along the vertical direction downwards is limited, then the clamping petals 14, the corrugated pipe 10 and the connecting cylinder 8 are put into the second connecting piece 7, the connecting cylinder 8 and the second connecting piece 7 are connected through the first fastener 13, at this time, the threaded sleeve 9 is screwed, the threaded sleeve 9 is installed on the connecting cylinder 8, the threaded sleeve 9 limits the freedom of the clamping petals 14 along the vertical direction upwards, the threaded sleeve 9 is provided with internal threads, the connecting cylinder 8 is provided with external threads matched with the internal threads, the threaded sleeve 9 is rotated to make the threaded sleeve 9 abut against the second connecting piece 7, and the connection of the corrugated pipe 10 is realized. At this time, the cross frame 3 is moved downwards, the pipe head 101 passes through the second connecting hole, and then the fixing piece 12 is assembled, so that the connection of the pipe head 101 is realized, and then the stretching test can be carried out.

[0033] Referring to Figure 3 and Figure 4 As shown in some embodiments, the corrugated pipe connecting assembly further comprises: an anti-loosening groove 81, the anti-loosening groove 81 is arranged at the end of the second connecting piece 7 away from the third connecting hole, and the second connecting piece 7 and the threaded sleeve 9 are provided with an anti-loosening agent therebetween. The anti-loosening agent is used to avoid loosening of the threaded sleeve 9, the anti-loosening groove 81 is used to better retain the anti-loosening agent, and the anti-loosening agent is preferably epoxy glue.

[0034] Referring to Figure 1 In some embodiments, the apparatus further comprises: a screw rod 4 arranged in the stretching frame 2; a screw nut sleeved on the screw rod 4, the screw nut being connected to the cross frame 3; and an adjusting drive for driving the screw rod 4 to rotate. The adjusting drive is a rotary power source, preferably an electric motor, which is installed in the base 1. The base 1 is preferably provided with a transmission structure, and the adjusting drive is transmitted to the two screw rods 4 through the transmission structure to drive the two screw rods 4 to rotate synchronously, thereby achieving the vertical reciprocating movement of the cross frame 3.

[0035] The above only describes some or preferred embodiments of the present application, and neither the text nor the drawings can limit the scope of protection of the present application. Any equivalent structural transformation based on the content of the present application and the drawings, or direct / indirect application in other related technical fields is included in the scope of protection of the present application.

Claims

1. A stretching apparatus for testing of a bellows head, characterized in that The utility model relates to a corrugated pipe (10) provided with a pipe head (101), and a stretching device comprising: a base (1); a pair of stretching frames (2), both of which are arranged on the base (1); a cross frame (3) movably arranged between the two stretching frames (2); a stretching drive (5) arranged on the cross frame (3); a pipe head connecting assembly connected to the stretching drive (5) and the pipe head (101); a corrugated pipe connecting assembly connected to the corrugated pipe (10) and the base (1).

2. A stretch device for testing a pipe end according to claim 1, characterized in that The pipe head connecting assembly comprises: a first connecting piece (11) provided with a first connecting hole (111) at one end and a second connecting hole at the other end; a fixing piece (12) arranged at the end of the first connecting piece (11) provided with the second connecting hole, provided with a third connecting hole, and provided with a second fastener between the first connecting piece (11) and the fixing piece (12), and provided with a mounting groove in communication with the third connecting hole.

3. A stretch device for testing a bellows head according to claim 2, characterized in that The corrugated pipe connecting assembly comprises: a second connecting piece (7) provided with a fourth connecting hole (71) at one end; a connecting cylinder (8) arranged at the other end of the second connecting piece (7); a pair of clamping petals (14) arranged on the outside of the corrugated pipe (10) and located in the connecting cylinder (8); a clamping groove (141) provided on the side of the clamping petals (14) facing the corrugated pipe (10) and adapted to the corrugated pipe (10); a threaded sleeve (9) arranged at the end of the connecting cylinder (8) away from the second connecting piece (7) and partially contacting the clamping petals (14).

4. A stretch device for testing a pipe end according to claim 3, characterized in that The corrugated pipe connecting assembly further comprises: a first fastener (13) by which the connecting cylinder (8) is arranged on the second connecting piece (7).

5. A stretch device for testing a bellows head according to claim 3, characterized in that The corrugated pipe connecting assembly further comprises: an anti-loosening groove (81) arranged at the end of the second connecting piece (7) away from the third connecting hole, and an anti-loosening agent arranged between the second connecting piece (7) and the threaded sleeve (9).

6. A stretch device for testing a bellows head according to claim 1, characterized in that Further comprising: a screw rod (4) arranged on the stretching frame (2); a lead screw nut arranged on the screw rod (4) and connected to the cross frame (3); an adjusting drive for driving the screw rod (4) to rotate.

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