Connecting, protecting and fastening device for prefabricated calandria

Abstract

The utility model relates to the technical field of connectors of prefabricated calandrias, in particular to a connecting, protecting and fastening device of prefabricated calandrias, which adopts at least four end corner pipe buckles which are sequentially buckled end to end, at least two transverse bolt and nut groups which are in transverse screw-thread fit and at least two longitudinal bolt and nut groups which are in longitudinal screw-thread fit, a first bolt hole is formed in one outer side face of the end corner pipe buckle, and a second bolt hole is formed in the other outer side face of the end corner pipe buckle. When more than two rows of prefabricated calandria pipes are assembled and communicated, at least two rows of adjacent prefabricated calandria pipes can be connected through at least four end corner pipe buckles which are sequentially buckled end to end, and the assembled and communicated rows of prefabricated calandria pipes can be stacked up and down or distributed side by side left and right, so that disordered distribution is avoided, and the space utilization rate is higher; and in addition, through transverse locking matching of the transverse bolt and nut set and longitudinal locking matching of the longitudinal bolt and nut set, the overall connection stability of the connection protection fastening device is improved, and end corner pipe buckles are prevented from being separated or the prefabricated calandria is prevented from being loosened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the connector technical field of prefabricated pipe, specifically relates to a prefabricated pipe's connection protection fastening device. BACKGROUND

[0002] The prefabricated pipe, for example, cable protection sleeve, is a new type of sleeve material popularized in power engineering. With the rapid development of power cable buried laying engineering, higher requirements are put forward for cable sleeve, which is the most commonly used electrically insulated pipe for protecting wires and cables. The cable protection sleeve includes corrugated pipes and pillow type composite pipes, for example, a high-strength compression-resistant composite pipe with plastic instead of steel and a forming die thereof with the application number CN202311086588.2, the outer ring of the composite pipe has multiple protective rings, and the shape of the protective ring is octagonal.

[0003] The connection between the joints of the two adjacent prefabricated pipes needs to be connected and fixed by a connecting device. The traditional connecting device can only realize the connection of a single row of prefabricated pipes, and manual assembly is required in the construction process. The assembly efficiency is low, the distribution of prefabricated pipes is messy, and the space occupied is large. SUMMARY

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the utility model is to provide a prefabricated pipe connection protection fastening device.

[0005] The utility model discloses a prefabricated pipe connection protection fastening device, which comprises at least four end angle pipe buckles, at least two groups of horizontal screw thread matched horizontal bolts and nuts, and at least two groups of longitudinal screw thread matched longitudinal bolts and nuts, one outer side of the end angle pipe buckle is provided with a first bolt hole, the other outer side of the end angle pipe buckle is provided with a second bolt hole, the horizontal bolt and nut group penetrates the first bolt hole of the two adjacent end angle pipe buckles and is locked and matched, the longitudinal bolt and nut group penetrates the second bolt hole of the two adjacent end angle pipe buckles and is locked and matched, and the plurality of end angle pipe buckles are matched to connect the two prefabricated pipes adjacent to each other.

[0006] Preferably, the two adjacent end angle pipe buckles are centrally symmetrical, one end of the end angle pipe buckle is provided with a first tenon and a first mortise, the other end of the end angle pipe buckle is provided with a second tenon and a second mortise, the first tenon of the two adjacent end angle pipe buckles is buckled with the first mortise of the two adjacent end angle pipe buckles, and the second tenon of the two adjacent end angle pipe buckles is buckled with the second mortise of the two adjacent end angle pipe buckles.

[0007] Further, the connecting protection fastening device further comprises at least two groups of central-symmetrically arranged transverse middle pipe buckle groups, adjacent two transversely distributed end corner pipe buckles are buckled through the transverse middle pipe buckle groups, and outer sides of the transverse middle pipe buckle groups are provided with third bolt holes; the transverse bolt and nut group penetrates the first bolt hole and the third bolt hole of the adjacent two end corner pipe buckles and is locked and matched.

[0008] Preferably, the transverse middle pipe buckle group comprises at least one pair of mutually buckled transverse link pipe buckles, adjacent two transverse link pipe buckles are central-symmetrically arranged, both ends of the transverse link pipe buckle are provided with third tenons and third mortises, the third tenon of the adjacent two transverse link pipe buckles is buckled with the third mortise of the adjacent two transverse link pipe buckles, the third tenon of the transverse link pipe buckle close to one end of the end corner pipe buckle is buckled with the first mortise of the end corner pipe buckle, and the third mortise of the transverse link pipe buckle close to one end of the end corner pipe buckle is buckled with the first tenon of the end corner pipe buckle.

[0009] Further, the connecting protection fastening device further comprises at least two groups of central-symmetrically arranged transverse middle pipe buckle groups, adjacent two transversely distributed end corner pipe buckles are buckled through the transverse middle pipe buckle groups, and outer sides of the transverse middle pipe buckle groups are provided with third bolt holes; the transverse bolt and nut group penetrates the first bolt hole and the third bolt hole of the adjacent two end corner pipe buckles and is locked and matched.

[0010] Preferably, the transverse middle pipe buckle group comprises at least one pair of mutually buckled transverse link pipe buckles, adjacent two transverse link pipe buckles are central-symmetrically arranged, both ends of the transverse link pipe buckle are provided with third tenons and third mortises, the third tenon of the adjacent two transverse link pipe buckles is buckled with the third mortise of the adjacent two transverse link pipe buckles, the third tenon of the transverse link pipe buckle close to one end of the end corner pipe buckle is buckled with the first mortise of the end corner pipe buckle, and the third mortise of the transverse link pipe buckle close to one end of the end corner pipe buckle is buckled with the first tenon of the end corner pipe buckle.

[0011] Preferably, the first tenon, the second tenon and the third mortise are dovetail tenons, and the first mortise, the second mortise and the third mortise are dovetail mortises.

[0012] Preferably, the fourth tenon is a dovetail tenon, and the fourth mortise is a dovetail mortise.

[0013] Preferably, one outer side of the end corner pipe buckle has a width twice as long as that of the other outer side of the end corner pipe buckle, and an outer side of the transverse link pipe buckle has a width equal to that of the other outer side of the end corner pipe buckle.

[0014] Preferably, an outer side of the longitudinal link pipe buckle has a width equal to that of the other outer side of the end corner pipe buckle.

[0015] The utility model discloses a beneficial effect lies in: the utility model discloses the connecting protection fastening device of prefabricated pipe, adopts at least four end corner pipe buckles of head -to -tail buckling, at least two groups of horizontal bolt and nut groups of horizontal thread cooperation, and at least two groups of longitudinal bolt and nut groups of longitudinal thread cooperation, and the first bolt hole is arranged to one outside of end corner pipe buckle, and the second bolt hole is arranged to another outside of end corner pipe buckle, and horizontal bolt and nut group passes through the first bolt hole of adjacent two end corner pipe buckles and locks the cooperation, and longitudinal bolt and nut group passes through the second bolt hole of adjacent two end corner pipe buckles and locks the cooperation, and a plurality of end corner pipe buckles are used for connecting two prefabricated pipes of head -to -tail adjacent together, when the two rows of prefabricated pipes are assembled and are connected, can pass through at least four end corner pipe buckles of head -to -tail buckling and connect at least two rows of two prefabricated pipes of head -to -tail adjacent together, and the multiple prefabricated pipes of assembling and connecting can be stacked or distributed side by side, avoid distribution disorderly, and the space utilization is higher, in addition, the horizontal locking cooperation of horizontal bolt and nut group and the longitudinal locking cooperation of longitudinal bolt and nut group, improve the overall connection stability of connecting protection fastening device, avoid end corner pipe buckle separation or prefabricated pipe loosening. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the structural schematic diagram of the utility model embodiment 1;

[0017] Figure 2 It is the exploded schematic diagram of the utility model embodiment 1;

[0018] Figure 3 It is the exploded schematic diagram of four end corner pipe buckles of the utility model;

[0019] Figure 4 It is the structural schematic diagram of the utility model embodiment 2;

[0020] Figure 5 It is the exploded schematic diagram of two groups of horizontal middle pipe buckle groups of the utility model;

[0021] Figure 6 It is the structural schematic diagram of the utility model embodiment 3;

[0022] Figure 7 It is the exploded schematic diagram of the utility model embodiment 3;

[0023] Figure 8 It is the exploded schematic diagram of two groups of longitudinal middle pipe buckle groups of the utility model;

[0024] Figure 9 It is the structural schematic diagram of the utility model embodiment 4.

[0025] The reference signs are: 1, end corner pipe buckle; 2, first bolt hole; 3, second bolt hole; 4, first tenon; 5, first mortise; 6, second tenon; 7, second mortise; 8, transverse middle pipe buckle group; 81, transverse connecting pipe buckle; 9, third bolt hole; 10, third tenon; 11, third mortise; 12, longitudinal middle pipe buckle group; 121, longitudinal connecting pipe buckle; 13, fourth bolt hole; 14, fourth tenon; 15, fourth mortise; 16, prefabricated pipe. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in combination with examples and drawings, and the content mentioned in the implementation manner is not a limitation on the utility model.

[0027] Example 1

[0028] As Figures 1-3 shown, a prefabricated pipe connecting protection fastening device comprises at least four end corner pipe buckles 1 connected in sequence, at least two groups of transverse bolt and nut groups (not shown in the figure) and at least two groups of longitudinal bolt and nut groups (not shown in the figure), a first bolt hole 2 is arranged on one outer side of the end corner pipe buckle 1, a second bolt hole 3 is arranged on the other outer side of the end corner pipe buckle 1, the transverse bolt and nut groups pass through the first bolt holes 2 of the adjacent two end corner pipe buckles 1 and are locked and matched, the longitudinal bolt and nut groups pass through the second bolt holes 3 of the adjacent two end corner pipe buckles 1 and are locked and matched, and the plurality of end corner pipe buckles 1 are matched to connect two prefabricated pipes 16 adjacent in sequence.

[0029] Further, the adjacent two end corner pipe buckles 1 are centrally symmetrical, a first tenon 4 and a first mortise 5 are arranged at one end of the end corner pipe buckle 1, a second tenon 6 and a second mortise 7 are arranged at the other end of the end corner pipe buckle 1, the first tenon 4 of the adjacent two end corner pipe buckles 1 is buckled with the first mortise 5 of the adjacent two end corner pipe buckles 1, and the second tenon 6 of the adjacent two end corner pipe buckles 1 is buckled with the second mortise 7 of the adjacent two end corner pipe buckles 1, which facilitates rapid assembly and is conducive to improving the connection stability of the adjacent two end corner pipe buckles 1.

[0030] Further, the width of one outer side of the end corner pipe buckle 1 is twice the width of the other outer side of the end corner pipe buckle 1. The outer periphery of the four end corner pipe buckles 1 enclosed in sequence is finally approximately rectangular.

[0031] Further, the first tenon 4 and the second tenon 6 are both dovetail tenons, and the first mortise 5 and the second mortise 7 are both dovetail mortises, which facilitates rapid assembly and is conducive to improving the connection stability of the adjacent two end corner pipe buckles 1.

[0032] Further, the transverse bolt-nut set and the longitudinal bolt-nut set each include a bolt and a nut threaded with the end of the bolt, and the bolt is threaded through the first bolt hole 2 / second bolt hole 3 and then threaded with the nut to achieve the purpose of locking fit.

[0033] The connecting protection fastening device of the present embodiment 1 is suitable for the communication and parallel assembly of two rows of prefabricated pipes 16 arranged head to head.

[0034] When the two rows of prefabricated pipes 16 arranged head to head are communicated and assembled in parallel, the two rows of prefabricated pipes 16 arranged head to head are connected by four end corner pipe buckles 1 buckled in sequence head to tail, and the multiple prefabricated pipes 16 assembled in communication can be stacked two by two or distributed two by two side by side, avoiding disorderly distribution and higher space utilization. In addition, the transverse locking fit of the transverse bolt-nut set and the longitudinal locking fit of the longitudinal bolt-nut set improve the overall connection stability of the connecting protection fastening device and prevent the end corner pipe buckle 1 from separating or the prefabricated pipe 16 from loosening.

[0035] Embodiment 2

[0036] The difference between the present embodiment and embodiment 1 is that:

[0037] As shown in Figures 3-5 Further, the connecting protection fastening device further includes at least two groups of transverse middle pipe buckle sets 8 arranged symmetrically about the center, and the adjacent two transversely distributed end corner pipe buckles 1 are buckled through the transverse middle pipe buckle set 8, and the outer side of the transverse middle pipe buckle set 8 is provided with a third bolt hole 9; the transverse bolt-nut set penetrates the first bolt hole 2 and the third bolt hole 9 of the adjacent two end corner pipe buckles 1 and is locked in fit.

[0038] Further, the transverse middle pipe buckle set 8 includes at least one pair of transversely connected pipe buckles 81, and the adjacent two transversely connected pipe buckles 81 are symmetrically arranged about the center, the two ends of the transversely connected pipe buckle 81 are provided with a third tenon 10 and a third mortise 11, the third tenon 10 of the adjacent two transversely connected pipe buckles 81 is buckled with the third mortise 11 of the adjacent two transversely connected pipe buckles 81, the third tenon 10 of the transversely connected pipe buckle 81 close to one end of the end corner pipe buckle 1 is buckled with the first mortise 5 of the end corner pipe buckle 1, and the third mortise 11 of the transversely connected pipe buckle 81 close to one end of the end corner pipe buckle 1 is buckled with the first tenon 4 of the end corner pipe buckle 1.

[0039] Further, the width of one outer side of the end corner pipe buckle 1 is twice the width of the other outer side of the end corner pipe buckle 1; the width of the outer side of the transversely connected pipe buckle 81 is equal to the width of the other outer side of the end corner pipe buckle 1.

[0040] Furthermore, the first tenon 4, the second tenon 6, and the third mortise 11 are all dovetail tenons, and the first mortise 5, the second mortise 7, and the third mortise 11 are all dovetail mortises.

[0041] The connection protection fastening device of this embodiment 2 is suitable for the horizontal side-by-side assembly of at least three rows of two prefabricated pipes 16 that are adjacent to each other.

[0042] When two prefabricated pipes 16 arranged horizontally and side by side in three adjacent rows, the two adjacent horizontally distributed corner pipe buckles 1 are fastened together by the horizontal middle pipe buckle group 8, and the two adjacent vertically distributed corner pipe buckles 1 are fastened together. The assembled and connected multi-row prefabricated pipes 16 can be stacked three-by-three or arranged three-by-three side by side.

[0043] Example 3

[0044] The difference between this embodiment and Embodiment 1 is that:

[0045] like Figure 3 , 6 As shown in Figure -8, further, the connection protection fastening device also includes at least two sets of centrally symmetrically arranged longitudinal central tube buckle groups 12, and two adjacent longitudinally distributed end corner tube buckles 1 are fastened together by the longitudinal central tube buckle groups 12. The outer side of the longitudinal central tube buckle group 12 is provided with a fourth bolt hole 13; the longitudinal bolt and nut group passes through the second bolt hole 3 and the fourth bolt hole 13 of the two adjacent end corner tube buckles 1 and is locked in place.

[0046] Furthermore, the longitudinal central tube buckle assembly 12 includes at least one pair of interlocking longitudinal connecting tube buckles 121. The two adjacent longitudinal connecting tube buckles 121 are centrally symmetrical. Both ends of the longitudinal connecting tube buckle 121 are provided with a fourth tenon 14 and a fourth mortise 15. The fourth tenon 14 of the two adjacent longitudinal connecting tube buckles 121 is engaged with the fourth mortise 15 of the two adjacent longitudinal connecting tube buckles 121. The fourth tenon 14 of the longitudinal connecting tube buckle 121 near the end corner tube buckle 1 is engaged with the second mortise 7 of the end corner tube buckle 1. The fourth mortise 15 of the longitudinal connecting tube buckle 121 near the end corner tube buckle 1 is engaged with the second tenon 6 of the end corner tube buckle 1.

[0047] Furthermore, the first tenon 4, the second tenon 6, and the fourth mortise 15 are all dovetail tenons, and the first mortise 5, the second mortise 7, and the fourth mortise 15 are all dovetail mortises.

[0048] Furthermore, the width of one outer side of the corner tube buckle 1 is twice the width of the other outer side of the corner tube buckle 1; the width of the outer side of the longitudinal connecting tube buckle 121 is equal to the width of the other outer side of the corner tube buckle 1.

[0049] The connecting protection fastening device of the present embodiment 3 is suitable for the connection of at least four rows of two prefabricated pipe racks 16 arranged end to end and assembled in pairs in longitudinal side-by-side manner.

[0050] When the four rows of two prefabricated pipe racks 16 arranged end to end are connected and assembled in pairs in longitudinal side-by-side manner, the adjacent two longitudinally distributed end corner pipe clamps 1 are connected through the longitudinal middle pipe clamp group 12, and the adjacent two transversely distributed end corner pipe clamps 1 are connected.

[0051] Embodiment 4

[0052] The difference between the present embodiment and embodiment 1 is that:

[0053] As shown in Figure 3 , 5 , 8, 9, further, the connecting protection fastening device further comprises at least two groups of transversely middle pipe clamp groups 8 arranged in central symmetry, the adjacent two transversely distributed end corner pipe clamps 1 are connected through the transversely middle pipe clamp groups 8, the outer side of the transversely middle pipe clamp groups 8 is provided with third bolt holes 9, and the transversely bolt and nut groups pass through the first bolt holes 2 and the third bolt holes 9 of the adjacent two end corner pipe clamps 1 and are locked and matched.

[0054] Further, the transversely middle pipe clamp groups 8 comprise at least one pair of transversely connected pipe clamps 81 arranged in central symmetry, the two ends of the transversely connected pipe clamps 81 are provided with third tenons 10 and third mortises 11, the third tenon 10 of the adjacent two transversely connected pipe clamps 81 is connected with the third mortise 11 of the adjacent two transversely connected pipe clamps 81, the third tenon 10 of the transversely connected pipe clamps 81 close to one end of the end corner pipe clamp 1 is connected with the first mortise 5 of the end corner pipe clamp 1, and the third mortise 11 of the transversely connected pipe clamps 81 close to one end of the end corner pipe clamp 1 is connected with the first tenon 4 of the end corner pipe clamp 1.

[0055] Further, the connecting protection fastening device further comprises at least two groups of longitudinally middle pipe clamp groups 12 arranged in central symmetry, the adjacent two longitudinally distributed end corner pipe clamps 1 are connected through the longitudinally middle pipe clamp groups 12, the outer side of the longitudinally middle pipe clamp groups 12 is provided with fourth bolt holes 13, and the longitudinally bolt and nut groups pass through the second bolt holes 3 and the fourth bolt holes 13 of the adjacent two end corner pipe clamps 1 and are locked and matched.

[0056] Further, the longitudinal middle pipe buckle group 12 comprises at least one pair of mutually buckled longitudinal connection pipe buckles 121, the adjacent two longitudinal connection pipe buckles 121 are central symmetrical, the two ends of the longitudinal connection pipe buckles 121 are provided with fourth tenons 14 and fourth mortises 15, the fourth tenon 14 of the adjacent two longitudinal connection pipe buckles 121 is buckled with the fourth mortise 15 of the adjacent two longitudinal connection pipe buckles 121, the fourth tenon 14 of the longitudinal connection pipe buckle 121 close to one end of the end corner pipe buckle 1 is buckled with the second mortise 7 of the end corner pipe buckle 1, and the fourth mortise 15 of the longitudinal connection pipe buckle 121 close to one end of the end corner pipe buckle 1 is buckled with the second tenon 6 of the end corner pipe buckle 1.

[0057] Further, the first tenon 4, the second tenon 6, the third mortise 11 and the fourth tenon 14 are dovetail tenons, and the first mortise 5, the second mortise 7, the third mortise 11 and the fourth mortise 15 are dovetail mortises.

[0058] Further, the width of the outer side of the end corner pipe buckle 1 is twice the width of the other outer side of the end corner pipe buckle 1; the width of the outer side of the transverse connection pipe buckle 81 is equal to the width of the other outer side of the end corner pipe buckle 1; and the width of the outer side of the longitudinal connection pipe buckle 121 is equal to the width of the other outer side of the end corner pipe buckle 1.

[0059] The connecting protection fastening device of the embodiment 4 is suitable for the connection of six rows of prefabricated pipes 16 arranged in three rows and connected longitudinally.

[0060] When the six rows of prefabricated pipes 16 arranged in three rows and connected longitudinally are connected, the adjacent two transversely distributed end corner pipe buckles 1 are buckled through the transverse middle pipe buckle group 8, and the adjacent two longitudinally distributed end corner pipe buckles 1 are buckled through the longitudinal middle pipe buckle group 12.

[0061] The above embodiment is a preferred implementation scheme of the utility model, in addition, the utility model can be implemented in other ways, and any obvious replacement without departing from the utility model concept is within the protection scope of the utility model.

Claims

1. A connection protection fastening device for prefabricated penstocks, characterized in that: The connecting protection fastening device comprises at least four end corner pipe fastenings connected in sequence, at least two groups of transverse bolt and nut groups, and at least two groups of longitudinal bolt and nut groups.

2. A pre-fabricated, connection-protection fastening device for a pipe section according to claim 1, characterized in that: The end corner pipe fastenings are centrally symmetrical, one end of the end corner pipe fastening is provided with a first tenon and a first mortise, the other end of the end corner pipe fastening is provided with a second tenon and a second mortise, the first tenon of the adjacent two end corner pipe fastenings is connected with the first mortise of the adjacent two end corner pipe fastenings, and the second tenon of the adjacent two end corner pipe fastenings is connected with the second mortise of the adjacent two end corner pipe fastenings.

3. A pre-fabricated pipe coupling protection fastening device according to claim 2, characterized in that: The connecting protection fastening device further comprises at least two groups of centrally symmetrical transverse middle pipe fastening groups, the adjacent two transversely distributed end corner pipe fastenings are connected through the transverse middle pipe fastening groups, and the outer side of the transverse middle pipe fastening group is provided with a third bolt hole.

4. A pre-fabricated pipe coupling protection fastening device according to claim 3, characterized in that: The transverse middle pipe fastening group comprises at least one pair of transversely connected transverse connecting pipe fastenings, the adjacent two transverse connecting pipe fastenings are centrally symmetrical, both ends of the transverse connecting pipe fastening are provided with a third tenon and a third mortise, the third tenon of the adjacent two transverse connecting pipe fastenings is connected with the third mortise of the adjacent two transverse connecting pipe fastenings, the third tenon of the transverse connecting pipe fastening close to one end of the end corner pipe fastening is connected with the first mortise of the end corner pipe fastening, and the third mortise of the transverse connecting pipe fastening close to one end of the end corner pipe fastening is connected with the first tenon of the end corner pipe fastening.

5. A pre-fabricated pipe coupling protection and fastening device according to any one of claims 2 to 4, wherein: The connecting protection fastening device further comprises at least two groups of centrally symmetrical longitudinal middle pipe fastening groups, the adjacent two longitudinally distributed end corner pipe fastenings are connected through the longitudinal middle pipe fastening groups, and the outer side of the longitudinal middle pipe fastening group is provided with a fourth bolt hole.

6. A pre-fabricated pipe-penetration protection and fastening device according to claim 5, characterized in that: The longitudinal middle pipe fastening group comprises at least one pair of longitudinally connected longitudinal connecting pipe fastenings, the adjacent two longitudinal connecting pipe fastenings are centrally symmetrical, both ends of the longitudinal connecting pipe fastening are provided with a fourth tenon and a fourth mortise, the fourth tenon of the adjacent two longitudinal connecting pipe fastenings is connected with the fourth mortise of the adjacent two longitudinal connecting pipe fastenings, the fourth tenon of the longitudinal connecting pipe fastening close to one end of the end corner pipe fastening is connected with the second mortise of the end corner pipe fastening, and the fourth mortise of the longitudinal connecting pipe fastening close to one end of the end corner pipe fastening is connected with the second tenon of the end corner pipe fastening.

7. A pre-fabricated pipe coupling protection fastening device according to claim 4, characterized in that: The first tenon, the second tenon and the third mortise are dovetail tenons, and the first mortise, the second mortise and the third mortise are dovetail mortises.

8. A pre-fabricated pipe coupling protection fastening device according to claim 6, characterized in that: The fourth tenon is a dovetail tenon, and the fourth mortise is a dovetail mortise.

9. A pre-fabricated, spool piece connecting, protective fastening device according to claim 4, characterized in that: The outer side face width of the end corner pipe clip is twice the other outer side face width of the end corner pipe clip; the outer side face width of the transverse connection pipe clip is equal to the other outer side face width of the end corner pipe clip.

10. A pre-fabricated pipe coupling protection fastening device according to claim 6, characterized in that: The outer side face width of the longitudinal connection pipe clip is equal to the other outer side face width of the end corner pipe clip.

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