CN215727389U - Adjustable PVC spool bending test device - Google Patents

Abstract

The utility model relates to the technical field of plastic pipeline detection, in particular to an adjustable PVC (polyvinyl chloride) line pipe bending test device which comprises a rack, a line pipe bending mechanism, a driving device and a pressing mechanism, wherein the line pipe bending mechanism is used for bending a line pipe, the driving device is used for driving the line pipe bending mechanism to rotate, and the pressing mechanism is used for pressing the line pipe; the pipe bending machine is characterized in that a mounting frame is arranged on the rack, the pressing mechanism is fixedly mounted at the top of the mounting frame, the pipe bending mechanism is mounted on the mounting frame, and the driving device is mounted on the rack and connected with the pipe bending mechanism. According to the utility model, the motor drives the plurality of pipe bending mechanisms to bend the pipe, the two ends of the pipe sample bend 90 degrees towards the middle at the same time, and the pipe bending mechanisms return automatically after bending, so that the working efficiency of a pipe bending test is greatly improved, a large amount of labor cost and time cost are saved, the bending speed can be adjusted conveniently according to actual conditions, the parameter debugging requirement of the pipe bending test in actual production is met, and the general adaptability of the device is improved.

Description

Adjustable PVC spool bending test device

Technical Field

The utility model relates to the technical field of plastic pipeline detection, in particular to an adjustable PVC (polyvinyl chloride) line pipe bending test device.

Background

PVC electrical conduit, commonly called conduit, is a conduit used for protecting and securing wiring or cable wiring in electrical installation works for the threading and replacement of wires or cables. The PVC electrical casing is divided into-25 type, -15 type, -5 type and the like according to the temperature grade, and the corresponding long-term use temperature ranges are (-25-60), (-15-60), (-5-60); the bending characteristics are divided into a hard sleeve, a semi-hard sleeve and a corrugated sleeve, wherein the hard sleeve can be inserted into a spring for bending. According to the standard JG/T3050-1998, the bending performance is one of the important indexes reflecting the performance of the electrical casing and is also an important index for evaluating the quality of the electrical casing. The purpose of the bending property is to detect the normal temperature and low temperature bending properties of an electrical casing, such as-5 type electrical casing, and the pipe needs to be bent to 180 degrees by a spring under the conditions of normal temperature and-5 +/-2 ℃ respectively without fracture. At present, in laboratories in the industry, PVC electrical casing bending detection is mainly carried out by manually bending pipes by using a hard casing bending tester, and the specifications of the bent pipes are dn16, dn20 and dn 25. The device can meet the standard requirements, but the following problems exist in the process of sample detection: 1. manually pressing down a roller of the hard sleeve bending tester to bend the hard sleeve into 180 degrees, and consuming a great deal of manpower and time; 2. the bending radius difference between the bent pipe of the bending tester and the field hand bending of the product is large, so that the rupture conditions of the bent pipe and the field hand bending of the product are different.

In chinese patent publication No. CN104550375A, a high-efficiency left-right bending integrated pipe bender is proposed, in which two pipe bender heads are disposed on the same rotation shaft, and the pipe bender heads are controlled to work in turns to bend pipes in multiple directions, but this technical solution requires manual control of pipe bender head wheel flow to perform mechanical operation, and the working efficiency is not high enough, the degree of automation is low, and it is difficult to meet the large-scale pipe bending requirement in real work, and the bending operation is not standardized, and it is difficult to accurately reflect the bending performance of the pipe in a pipe bending test.

SUMMERY OF THE UTILITY MODEL

The utility model provides an adjustable PVC conduit bending test device for overcoming the problem of low testing efficiency of the conduit bending test in the prior art.

In order to solve the technical problems, the utility model adopts the technical scheme that: an adjustable PVC (polyvinyl chloride) line pipe bending test device comprises a rack, a line pipe bending mechanism for bending a line pipe, a driving device for driving the line pipe bending mechanism to rotate and a pressing mechanism for pressing the line pipe; the pipe bending machine is characterized in that a mounting frame is arranged on the rack, the pressing mechanism is fixedly mounted at the top of the mounting frame, the pipe bending mechanism is mounted on the mounting frame, and the driving device is mounted on the rack and connected with the pipe bending mechanism.

In this technical scheme, through set up two at least wheelsets of according to standard requirement and formulate on the return bend mechanism, can develop PVC electrician's sheathed tube bending test according to standards such as row mark JG/T3050, IEC 61386, can also install and change one set of wheelset according to actual hand bend radius formulation, improve the test accuracy of spool bending property, the device drives the spool bending through drive arrangement, spool sample both ends are crooked 90 to the centre simultaneously, return bend back return pipe mechanism is automatic after the bending, improve spool bending test's work efficiency greatly, save a large amount of human costs and time cost, bending rate can be according to the convenient adjustment of actual conditions, satisfy the parameter debugging demand to spool bending test in the actual production, improve the general suitability of device equipment.

Preferably, be equipped with the return bend subassembly that is used for crooked spool in the return bend mechanism, the return bend subassembly is including installing the first type wheel on the mounting bracket, the subassembly mounting panel that links to each other with drive arrangement's output shaft and installing the first bending wheel on the subassembly mounting panel, the global of first bending wheel with the global relative setting of first type wheel, first bending wheel with be formed with the open structure that is used for the spool to pass through between the first type wheel. In this technical scheme, the spool passes in the open structure between first type wheel and the first crooked wheel, makes the spool crooked through the rotation of first crooked wheel.

Preferably, the pipe bending mechanism further comprises a gear transmission pair, an input shaft used for transmitting power of the driving device is mounted on an input gear of the gear transmission pair, an output gear of the gear transmission pair is mounted with an output shaft used for transmitting power to the pipe bending assembly, the output shaft is connected with an assembly mounting plate provided with the first bending wheel, and the first type wheel is mounted on the output shaft. In the technical scheme, the driving device drives the elbow component to bend the line pipe through the gear transmission pair.

Preferably, the gear transmission pair comprises a first gear and a second gear which are meshed with each other, the first gear is mounted on the input shaft, and the second gear is mounted on the output shaft. In this technical scheme, the power output of output shaft is realized through first gear and the second gear of intermeshing to the input shaft.

Preferably, the return bend subassembly is equipped with and is used for the restriction bend wheel rotational displacement's stop gear, stop gear is including installing spacing post on the second gear and through touching spacing post control return bend mechanism turned angle's adjusting bolt, adjusting bolt demountable installation in the recess on the mounting bracket curb plate. In the technical scheme, the adjusting bolt can limit the limiting column when the second gear rotates, so that the bending stroke of the bending wheel is controlled, and the pipe bending mechanism automatically returns after the bending wheel is bent to the set stroke.

Preferably, the elbow pipe assembly is provided with at least two groups, and connecting plates which are mutually connected and used for balancing the bending force of the assembly mounting plates are arranged between the assembly mounting plates. In this technical scheme, the connecting plate can balance the turning force of the mounting panel when return bend subassembly operation.

Preferably, the driving device comprises a driving motor, a driving shaft and a bevel gear set used for being connected with the elbow assembly, the driving motor is connected with the bevel gear set through the driving shaft, the bevel gear set is connected with the first gear through the input shaft, and the first gear is connected with the second gear. In the technical scheme, a driving motor of the power mechanism is connected with the input shaft through the bevel gear set to provide driving force for the pipe bending assembly.

Preferably, the pressing mechanism comprises a pressing bracket arranged on the mounting rack, a pipe clamp used for pressing the wire pipe, an adjusting screw and a top rod with one end connected with the pipe clamp, and the other end of the top rod is abutted to the adjusting screw; adjusting screw movable mounting be in on the pressure support and threaded connection, be provided with the mounting hole on the mounting bracket, the ejector pin is installed in the mounting hole and rather than swing joint, with mounting bracket swing joint, be equipped with the spring on the ejector pin, the both ends of spring respectively with the ejector pin with mounting bracket looks butt. In the technical scheme, the pressing mechanism controls the ejector rod to move through the adjusting screw, so that the position of the pipe clamp is adjusted.

Preferably, the tube cards comprise a DN16 tube card, a DN20 tube card, a DN25 tube card and a universal tube card. In the technical scheme, different types of pipe clamps on the pressing mechanism can clamp different types of line pipes, and the bending test of the PVC electrical casing pipe is developed according to the standards such as the Row standard JG/T3050, the IEC 61386 and the like.

Preferably, the pipe clamp is connected with the ejector rod through a bolt. In this technical scheme, the pipe strap with ejector pin accessible bolt is implemented and is dismantled fast, satisfies the device and implements the bending test's of different grade type spool demand.

Compared with the prior art, the beneficial effects are: 1. the device is provided with at least three sets of wheel sets formulated according to standard requirements, the bending test of the PVC electrical casing can be carried out according to the standards such as the row standard JG/T3050, IEC 61386 and the like, and a set of wheel set formulated according to the actual bending radius of the hand can be installed and replaced, so that the bending performance of the product can be reflected more truly; 2. after putting into the sample, drive the spool through the motor and crooked, spool sample both ends are crooked 90 to the centre simultaneously, and the return bend mechanism self return after the bending improves spool bending test's work efficiency greatly, saves a large amount of human costs and time cost, and bending rate can be according to the convenient adjustment of actual conditions, satisfies the parameter debugging demand to spool bending test in the actual production, improves the general suitability of plant equipment.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the adjustable PVC conduit bending test device of the utility model;

FIG. 2 is a schematic diagram of the front structure of the adjustable PVC conduit bending test device of the utility model;

FIG. 3 is a schematic sectional view of the compression mechanism of FIG. 2 in the direction A-A;

fig. 4 is a schematic view of the installation of the adjusting bolt in the spacing mechanism of the present invention.

Description of reference numerals: 1-a rack, 11-a mounting rack, 2-a pipe bending mechanism, 21-a pipe bending assembly, 211-an assembly mounting plate, 212-a limiting column, 213-an adjusting bolt, 214-a first type wheel, 215-a first bending wheel, 216-an opening structure, 22-an output shaft, 23-an input shaft, 24-a first gear, 25-a second gear, 26-a connecting plate, 3-a driving device, 31-a bevel gear set, 32-a driving motor, 33-a driving shaft, 4-a pressing mechanism, 41-a pipe clamp, 42-an adjusting screw, 43-a mandril, 44-a pressing support and 45-a spring.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.

The technical scheme of the utility model is further described in detail by the following specific embodiments in combination with the attached drawings:

example 1

As shown in fig. 1 to 4, an adjustable PVC conduit bending test device comprises a frame 1, a pipe bending mechanism 2 for bending a conduit, a driving device 3 for driving the pipe bending mechanism 2 to rotate, and a pressing mechanism 4 for pressing the conduit; frame 1 is last to be provided with mounting bracket 11, and hold-down mechanism 4 fixed mounting is at mounting bracket 11 top, and swan neck mechanism 2 installs on mounting bracket 11, and drive arrangement 3 installs in frame 1 and links to each other with swan neck mechanism 2, swan neck mechanism 2 includes the different return bend subassembly 21 of two at least specifications.

In this embodiment, through set up at least one set of wheelset of formulating according to standard requirement on the device, can be according to the line mark JG/T3050, PVC electrician's sheathed tube bending test is carried out to standards such as IEC 61386, can also install and change one set of wheelset of formulating according to actual hand bend radius, improve the test accuracy of spool bending property, the device drives the bending of wire pipe through the motor, spool sample both ends are crooked 90 to the centre simultaneously, crooked back return of return bend mechanism is automatic, improve spool bending test's work efficiency greatly, save a large amount of human costs and time cost, bending rate can be according to the convenient adjustment of actual conditions, satisfy the parameter debugging demand to the spool bending test in the actual production, improve the general suitability of plant equipment.

The bending mechanism 2 is provided with a bending pipe assembly 21 for bending the conduit, the bending pipe assembly 21 comprises a first shaped wheel 214 mounted on the mounting frame 11, an assembly mounting plate 211 connected with the output shaft 22 of the driving device, and a first bending wheel 215 mounted on the assembly mounting plate 211, the circumferential surface of the first bending wheel 215 is arranged opposite to the circumferential surface of the first shaped wheel 214, and an opening structure 216 for passing the conduit is formed between the first bending wheel 215 and the first shaped wheel 214. In this embodiment, the conduit passes through an opening 216 between the first profile wheel 214 and the first bending wheel 215, and the conduit is bent by rotation of the first bending wheel 215.

In addition, the pipe bending mechanism 2 further comprises a gear transmission pair, an input shaft 23 for transmitting power of the driving device 3 is mounted on an input gear of the gear transmission pair, an output shaft 22 for transmitting power to the pipe bending assembly 21 is mounted on an output gear of the gear transmission pair, the output shaft 22 is connected with an assembly mounting plate 211 on which a first bending wheel 215 is mounted, and a first type wheel 214 is mounted on the output shaft 22. In this embodiment, the drive means 3 drives the elbow assembly 21 through a gear train pair to effect the bending of the conduit.

Wherein the gear transmission pair comprises a first gear 24 and a second gear 25 which are meshed with each other, the first gear 24 is arranged on the input shaft 23, and the second gear 25 is arranged on the output shaft 22. In the present embodiment, the input shaft 23 realizes power output to the output shaft 22 through the first gear 24 and the second gear 25 that mesh with each other.

In addition, the bending pipe assembly 21 is provided with a limiting mechanism for limiting the rotational displacement of the bending wheel, the limiting mechanism comprises a limiting post 212 mounted on the second gear 25 and an adjusting bolt 213 for controlling the rotational angle of the bending pipe mechanism 2 by touching the limiting post 212, and the adjusting bolt 213 is detachably mounted in a groove on a side plate of the mounting frame 11. In this embodiment, the adjusting bolt 213 can limit the limiting column 212 when the second gear 25 rotates, and control the bending stroke of the bending wheel, so that the bending mechanism 2 automatically returns after the bending wheel bends to the set stroke.

At least two groups of elbow components 21 are arranged, and connecting plates 26 which are mutually connected and used for balancing the bending force of the component mounting plates 211 are arranged between the component mounting plates 211. In this embodiment, the coupling plate 26 balances the rotational force of the assembly mounting plate 211 when the elbow assembly 21 is operating.

In addition, the driving device 3 includes a driving motor 32, a driving shaft 33 and a bevel gear set 31 for connecting the elbow assembly 21, the driving motor 32 is connected with the bevel gear set 31 through the driving shaft 33, the bevel gear set 31 is connected with the first gear 24 through the input shaft 23, and the first gear 24 is meshed with the second gear 25. In this embodiment, a drive motor 32 of the power mechanism is connected to the input shaft 23 via a bevel gear set 31 to provide a driving force for the elbow assembly 21.

The pressing mechanism 4 comprises a pressing support 44 arranged on the mounting frame 11, a pipe clamp 41 for pressing the spool, an adjusting screw 42 and a push rod 43, one end of the push rod 43 is connected with the pipe clamp 41, and the other end of the push rod 43 is abutted to the adjusting screw 42; adjusting screw 42 movable mounting with compress tightly on support 44 and threaded connection, be provided with the mounting hole on the mounting bracket 11, ejector pin 43 install in the mounting hole and rather than swing joint, with mounting bracket 11 swing joint, be equipped with spring 45 on the ejector pin 43, spring 45's both ends respectively with ejector pin 43 and mounting bracket 11 looks butt. In the embodiment, the pressing mechanism 4 controls the movement of the ejector rod 43 through the adjusting screw 42, so as to adjust the position of the pipe clamp 41.

In addition, the tube cards 41 include DN16 tube cards, DN20 tube cards, DN25 tube cards, and universal tube cards. In this embodiment, different types of pipe clamps 41 on the pressing mechanism 4 can clamp different types of wire pipes, and the bending test of the PVC electrical casing pipe is performed according to the standards such as the standard JG/T3050, IEC 61386, and the like.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. The utility model provides an adjustable PVC spool bending test device which characterized in that: the pipe bending machine comprises a rack (1), a pipe bending mechanism (2) for bending a pipe, a driving device (3) for driving the pipe bending mechanism (2) to rotate and a pressing mechanism (4) for pressing the pipe; be provided with mounting bracket (11) on frame (1), hold-down mechanism (4) fixed mounting is at mounting bracket (11) top, return bend mechanism (2) are installed on mounting bracket (11), drive arrangement (3) are installed frame (1) go up and with return bend mechanism (2) link to each other, return bend mechanism (2) include return bend subassembly (21) that two at least specifications are different.

2. The adjustable PVC conduit bending test apparatus of claim 1, wherein: the return bend subassembly (21) including install first type wheel (214) on mounting bracket (11), the subassembly mounting panel (211) that links to each other with the output shaft of drive arrangement (3) and install first bending wheel (215) on subassembly mounting panel (211), the global of first bending wheel (215) with the global of first type wheel (214) sets up relatively, first bending wheel (215) with be formed with opening structure (216) that are used for the spool to pass through between first type wheel (214).

3. The adjustable PVC conduit bending test apparatus of claim 2, wherein: bend pipe mechanism (2) still include the gear transmission pair, install input shaft (23) that are used for transmitting drive arrangement power on the vice input gear of gear transmission, it is right to install on the vice output gear of gear transmission bend pipe subassembly (21) transmission power's output shaft (22), output shaft (22) and installation the subassembly mounting panel (211) of first crooked wheel (215) are connected, install first type wheel (214) on output shaft (22).

4. The adjustable PVC conduit bending test apparatus of claim 3, wherein: the gear transmission pair comprises a first gear (24) and a second gear (25) which are meshed with each other, the first gear is installed on the input shaft (23), and the second gear (25) is installed on the output shaft (22).

5. The adjustable PVC conduit bending test device of claim 4, wherein: elbow pipe subassembly (21) are equipped with and are used for the restriction bend wheel rotational displacement's stop gear, stop gear is including installing spacing post (212) on second gear (25) and through touching spacing post (212) control elbow mechanism (2) turned angle's adjusting bolt (213), adjusting bolt (213) demountable installation is in the recess on mounting bracket (11) curb plate.

6. The adjustable PVC conduit bending test apparatus of claim 5, wherein: the elbow pipe assembly (21) is provided with at least two groups, and connecting plates (26) which are mutually connected and used for balancing the bending force of the assembly mounting plates (211) are arranged between the assembly mounting plates (211).

7. The adjustable PVC conduit bending test device of claim 4, wherein: drive arrangement (3) are including driving motor (32), driving shaft (33) and be used for connecting bevel gear set (31) of return bend subassembly (21), driving motor (32) are connected with bevel gear set (31) through driving shaft (33), bevel gear set (31) pass through input shaft (23) with first gear (24) are connected, first gear (24) mesh with second gear (25) mutually.

8. The adjustable PVC conduit bending test apparatus of claim 1, wherein: the pressing mechanism (4) comprises a pressing support (44) arranged on the mounting frame (11), a pipe clamp (41) used for pressing the line pipe, an adjusting screw (42) and a push rod (43) with one end connected with the pipe clamp (41), and the other end of the push rod (43) is abutted to the adjusting screw (42); adjusting screw (42) with compress tightly support (44) threaded connection, be provided with the mounting hole on mounting bracket (11), ejector pin (43) are installed in the mounting hole and rather than swing joint, be equipped with spring (45) on ejector pin (43), the both ends of spring (45) respectively with ejector pin (43) with mounting bracket (11) looks butt.

9. The adjustable PVC conduit bending test apparatus of claim 8, wherein: the pipe card (41) comprises a DN16 pipe card, a DN20 pipe card, a DN25 pipe card and a universal pipe card.

10. The adjustable PVC conduit bending test apparatus of claim 8, wherein: the pipe clamp (41) is connected with the ejector rod (43) through a bolt.

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