Assembly type mounting device for building electromechanical engineering

Abstract

The invention relates to a building electromechanical engineering assembly type mounting device, and belongs to the technical field of building electromechanical engineering, the building electromechanical engineering assembly type mounting device comprises a base, a vertical rod arranged on the base and a supporting plate slidably arranged on the vertical rod in a sleeving mode, and a mounting plate is slidably arranged on the supporting plate; the sliding direction of the mounting plate is parallel to the sliding direction of the supporting plate, a plurality of limiting mechanisms are arranged on the mounting plate and used for limiting or releasing limitation of a pipeline, a triggering piece is arranged on the supporting plate, and the triggering piece is used for enabling the supporting plate to slide downwards relative to the mounting plate. And the limiting mechanism is triggered to relieve limitation on the pipeline. The method has the effects that the limitation on the pipeline does not need to be manually relieved, and manpower is saved.

Description

Technical Field

[0001] The present application relates to the technical field of building mechanical and electrical engineering, and in particular to an assembled installation device for building mechanical and electrical engineering. Background Art

[0002] The installation of mechanical and electrical engineering in buildings usually refers to the installation of machinery, electrical equipment, pipelines, etc. in buildings during construction. When installing pipelines, in order to save manpower, it is usually necessary to use installation devices to transport the pipelines to the installation height for subsequent pipeline installation and splicing.

[0003] In the related art, a Chinese patent document with publication number CN116675138A discloses an assembled installation device for building mechanical and electrical engineering, including a base, two vertical rods are fixed on the top surface of the base, the same support plate is slidably sleeved on the two vertical rods, a spring is arranged between the top of the vertical rod and the support plate, the spring is used to pull the support plate up, a screw adjustment control is arranged on the surface of the base, a traction mechanism is arranged at the end of the screw adjustment control, and a plurality of limit mechanisms are arranged on the support plate. When in use, after the support plate is pulled down by the traction mechanism driven by the screw adjustment control, the pipeline is placed on the support plate, the pipeline is limited by the limit mechanism, and then the support plate is pulled up to the installation height by the spring, and the pipeline is installed or spliced. After the installation or splicing is completed, the restriction of the pipeline by the limit mechanism is released, and the base can be moved to install the pipeline at the next position.

[0004] With respect to the above-mentioned related technologies, after the pipelines are installed or spliced, it is usually necessary to manually operate multiple limiting mechanisms in sequence to release the restrictions on the multiple pipelines, which is a cumbersome operation. Summary of the invention

[0005] In order to help save manpower and remove the restrictions on pipelines without manual work, the present application provides a prefabricated installation device for building mechanical and electrical engineering.

[0006] The present application provides a construction electromechanical engineering assembly installation device that adopts the following technical solution: A prefabricated installation device for building mechanical and electrical engineering, comprising a base, a vertical rod arranged on the base and a support plate slidably mounted on the vertical rod, wherein a mounting plate is slidably arranged on the support plate, and the sliding direction of the mounting plate is parallel to the sliding direction of the support plate, and a plurality of limit mechanisms are arranged on the mounting plate, and the limit mechanisms are used to restrict or release restrictions on pipelines, and a trigger member is arranged on the support plate, and the trigger member is used to trigger the limit mechanism to release restrictions on the pipeline when the support plate slides downward relative to the mounting plate.

[0007] Preferably, the limiting mechanism includes a reel rotatably arranged on the mounting plate, a limiting band wound around the reel, a locking piece arranged at an end of the limiting band away from the reel, an elastic member arranged on the mounting plate and a locking assembly arranged on the mounting plate, the rotation axis of the reel is parallel to the length direction of the pipeline, the limiting band is used to bundle the corresponding pipeline, the elastic member is used to drive the reel to rotate to reel up the limiting band, a slot is opened on the mounting plate, the slot corresponds to the locking piece one by one, the locking piece is used to be inserted into the corresponding slot, and the locking assembly is used to insert the locking piece into the corresponding slot and fix it relative to the mounting plate.

[0008] Preferably, the locking assembly includes a limit block slidably inserted into the mounting plate and a pushing member arranged in the mounting plate, the limit block corresponding to the slot one by one, the sliding direction of the limit block is perpendicular to the rotation axis of the reel, the limit block is slidably inserted into the slot, the side of the limit block close to the corresponding slot is an inclined surface, the locking plate is used to slide relative to the inclined surface of the limit block, the locking plate is provided with a locking hole for the limit block to pass through, and the pushing member is used to push the limit block to slide in the direction close to the corresponding slot.

[0009] Preferably, the pushing member includes a push spring for pushing the limiting block to slide in a direction close to the corresponding slot, one end of the push spring is arranged in the mounting plate, and the other end is arranged on the limiting block.

[0010] Preferably, the elastic member comprises a torsion spring for driving the reel to rotate to reel up the limiting belt, one end of the torsion spring is arranged on the mounting plate, and the other end is arranged on the reel.

[0011] Preferably, the trigger member includes a connecting rope arranged on the support plate, the connecting rope slides through the mounting plate and is connected to a side of the limit block away from the corresponding slot, and the connecting rope is used to pull the limit block to slide in a direction away from the corresponding slot.

[0012] Preferably, a guide rod is provided on the mounting plate, and the guide rod is slidably penetrated on the support plate, and the sliding direction of the guide rod is parallel to the sliding direction of the mounting plate.

[0013] Preferably, a spring is sleeved on the guide rod, one end of the spring is arranged on the support plate, and the other end is arranged on the side of the guide rod away from the mounting plate. The spring is used to push the guide rod to drive the mounting plate to move for reset. When the spring is in a natural state, the bottom wall of the mounting plate abuts against the support plate.

[0014] Preferably, a plurality of balls are rollingly arranged on one side of the limiting belt close to the pipeline.

[0015] In summary, this application includes the following beneficial technical effects: The support plate is driven down to lower the height of the support plate and the mounting plate, the pipeline is placed on the mounting plate, the pipeline is limited and fixed by the limiting mechanism on the mounting plate, and then the support plate is driven to drive the mounting plate and the pipeline on the mounting plate to rise, and after the pipeline is moved to the installation height, the pipeline is installed or spliced. When the pipeline is installed or spliced, the support plate is driven down. Since the limiting mechanism still has a limiting effect on the installed pipeline at this time, the mounting plate and the pipeline are relatively fixed. At this time, the support plate descends relative to the mounting plate, and the limiting mechanism is triggered by the trigger member to release the restriction on the pipeline. After there is no restriction, the mounting plate can move down with the support plate, thereby eliminating the need to manually release the restriction of multiple limiting mechanisms on the pipeline, thereby helping to save manpower and facilitating the operation of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0017] Figure 2 This is a first partial structural cross-sectional view of an embodiment of the present application.

[0018] Figure 3 It is a second partial structural cross-sectional view of an embodiment of the present application.

[0019] Figure 4 yes Figure 3 Enlarged view of part A.

[0020] Explanation of the accompanying drawings: 1. base; 2. vertical rod; 3. support plate; 4. mounting plate; 5. reel; 6. limiting belt; 7. locking plate; 8. limit block; 9. slot; 10. locking hole; 11. push spring; 12. torsion spring; 13. connecting rope; 14. guide rod; 15. spring; 16. ball; 17. groove; 18. mounting groove; 19. mounting frame; 20. channel. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-4 This application is described in further detail.

[0022] The present application embodiment discloses a building mechanical and electrical engineering assembly installation device. Figure 1 The assembled installation device of building mechanical and electrical engineering includes a base 1, two vertical rods 2 fixedly arranged on the base 1 and a support plate 3 slidably sleeved on the two vertical rods 2. The support plate 3 is slidably arranged along the vertical direction. The driving source for driving the support plate 3 to slide can be the same as that in the related technology, or a cylinder, a servo module and other structures can be used, which is not limited here.

[0023] Reference Figure 1 and Figure 2The upper surface of the support plate 3 is provided with a groove 17, and a mounting plate 4 is slidably arranged in the groove 17. The sliding direction of the mounting plate 4 is parallel to the sliding direction of the support plate 3, and the thickness of the mounting plate 4 is equal to the depth of the groove 17. A guide rod 14 is fixed to the bottom wall of the mounting plate 4. Two guide rods 14 are provided. The length direction of the guide rod 14 is parallel to the sliding direction of the mounting plate 4. The guide rod 14 is slidably penetrated on the support plate 3, and an anti-dropping block (not shown in the figure) is fixed to the end of the guide rod 14 away from the mounting plate 4, so that the guide rod 14 is not easily separated from the support plate 3; the sliding direction of the guide rod 14 is parallel to the sliding direction of the mounting plate 4, and the relative sliding of the mounting plate 4 and the support plate 3 is guided by the sliding cooperation between the guide rod 14 and the support plate 3; in the initial state, the bottom wall of the mounting plate 4 abuts against the bottom wall of the groove 17, and the upper surface of the mounting plate 4 is flush with the upper surface of the support plate 3.

[0024] Reference Figure 1 and Figure 2 A plurality of limiting mechanisms are arranged on the upper surface of the mounting plate 4, and the plurality of limiting mechanisms are arranged at intervals along the length direction of the mounting plate 4. The limiting mechanisms are used to restrict or release restrictions on the pipeline. A trigger member is provided on the support plate 3, and the trigger member is used to trigger the limiting mechanism to release restrictions on the pipeline when the support plate 3 slides downward relative to the mounting plate 4.

[0025] When in use, the mounting plate 4 is kept in the groove 17 under the action of gravity, and the bottom wall of the mounting plate 4 abuts against the bottom wall of the groove 17. Then the support plate 3 is lowered, the support plate 3 is lowered, and the pipeline is placed on the mounting plate 4. Since the mounting plate 4 abuts against the bottom wall of the groove 17, the mounting plate 4 will not slide relative to the support plate 3. Then the pipeline is limited and fixed by the limiting mechanism on the mounting plate 4, and then the support plate 3 is driven to drive the mounting plate 4 and the pipeline on the mounting plate 4 to rise. Under the limiting action of the limiting mechanism, the pipeline is not easy to fall off. Fall; after moving the pipeline to the installation height, install or splice the pipeline. When the pipeline is installed or spliced, drive the support plate 3 to descend. Since the limiting mechanism still has a limiting effect on the installed pipeline at this time, the mounting plate 4 and the pipeline are relatively fixed, and the mounting plate 4 will not fall with the support plate 3. The limiting mechanism is triggered by the trigger member to release the restriction on the pipeline. After there is no restriction, the mounting plate 4 can be lowered with the support plate 3 and reset, thereby eliminating the need to manually release the restrictions on the pipeline by multiple limiting mechanisms, saving manpower and facilitating the operation of the operator.

[0026] Reference Figure 2 and Figure 3In order to facilitate the restriction or release of the pipeline, a mounting groove 18 is provided on the top wall of the mounting plate 4, and the mounting groove 18 corresponds to the limiting mechanism one by one. The limiting mechanism includes a reel 5, a limiting belt 6, a locking piece 7, an elastic member and a locking assembly. The reel 5 is rotatably arranged in the corresponding mounting groove 18, and the rotation axis of the reel 5 is parallel to the length direction of the pipeline. The limiting belt 6 is wound around the reel 5, and the limiting belt 6 is used to bind the corresponding pipeline; the locking piece 7 is fixedly connected to the end of the limiting belt 6 away from the reel 5, and a slot 9 is provided on the mounting plate 4. The slot 9 corresponds to the locking piece 7 one by one, and the locking piece 7 is used to be inserted into the corresponding slot 9. The length of the limiting belt 6 is fixed. When the limiting belt 6 binds the pipeline and the locking piece 7 is inserted into the corresponding slot 9, the limiting belt 6 is in a completely unwound state on the reel 5; so that the limiting belt 6 will no longer pull the reel 5 to continue unwinding under the abutment of the pipeline, and is only used for pipelines of fixed size.

[0027] Reference Figure 2 and Figure 3 The elastic member is arranged in the installation groove 18, and the elastic member is used to drive the reel 5 to rotate to reel the limiting belt 6. The elastic member includes a torsion spring 12 sleeved on both ends of the reel 5, and the limiting belt 6 is located between the two corresponding torsion springs 12. One end of the torsion spring 12 is fixed on the inner wall of the installation groove 18, and the other end is fixed on the reel 5. The arrangement of the torsion spring 12 enables the reel 5 to always have the rotational force to reel the corresponding limiting belt 6.

[0028] Reference Figure 3 and Figure 4 The locking assembly is arranged in the mounting plate 4, and the locking assembly is used to insert the locking piece 7 into the corresponding slot 9 and fix it relatively to the mounting plate 4. In order to facilitate the insertion of the locking piece 7 into the corresponding slot 9 and fix it relatively to the mounting plate 4, a mounting frame 19 is embedded in the mounting plate 4, and the mounting frame 19 corresponds to the slot 9 one by one. The mounting frame 19 is located on the side of the corresponding slot 9 away from the reel 5. The locking assembly includes a limit block 8 and a pusher. The limit block 8 is slidably arranged in the mounting frame 19, and the limit block 8 corresponds to the slot 9 one by one. The limit block 8 slides through the mounting plate 4 It extends into the slot 9, and the sliding direction of the limit block 8 is perpendicular to the rotation axis of the reel 5. The side of the limit block 8 close to the corresponding slot 9 is an inclined surface, and the inclined surface is inclined downward close to the side of the corresponding reel 5. The locking piece 7 is used to slide relative to the inclined surface of the limit block 8. The locking piece 7 is provided with a locking hole 10 for the limit block 8 to pass through. The pushing member is arranged in the installation frame 19, and the pushing member is used to push the limit block 8 to slide in the direction close to the corresponding slot 9. When the locking piece 7 abuts against the bottom wall of the slot 9, the locking hole 10 is aligned with the limit block 8.

[0029] Reference Figure 3 and Figure 4In order to facilitate the sliding of the limit block 8 toward the direction close to the corresponding slot 9, the pushing member includes a push spring 11. The extending direction of the push spring 11 is parallel to the sliding direction of the limit block 8. The push spring 11 is located in the installation frame 19. One end of the push spring 11 is fixed to the inner wall of the installation frame 19, and the other end is fixed to a side of the limit block 8 away from the corresponding slot 9. When the push spring 11 is in a natural state, the limit block 8 extends into the corresponding slot 9, and the inclined surface is aligned with the opening of the slot 9.

[0030] When the locking piece 7 is disengaged from the corresponding slot 9, the push spring 11 is in a natural state and the limit block 8 extends into the slot 9; when in use, the pipeline is placed between the corresponding reel 5 and the slot 9 on the mounting plate 4, and the locking piece 7 is pulled. The locking piece 7 drives the corresponding limiting belt 6 to extend, so that the reel 5 rotates, unwinds the limiting belt 6, and the torsion spring 12 is deformed, and the locking piece 7 is inserted into the corresponding slot 9. The locking piece 7 and the inclined surface of the corresponding limit block 8 slide relative to each other, pushing the limit block 8 to slide in the direction away from the corresponding slot 9, and the limit block 8 compresses the push spring 11 until the locking piece 7 abuts against the bottom wall of the corresponding slot 9. At this time, the locking hole 10 is aligned with the limit block 8, and the compressed push spring 11 pushes the limit block 8 to slide in the direction close to the corresponding slot 9, so that the limit block 8 slides into the corresponding locking hole 10. Since the lower surface of the limit block 8 is flush, the locking piece 7 is restricted, so that the locking piece 7 and the mounting plate 4 are relatively fixed to achieve the fixation of the pipeline.

[0031] Reference Figure 3 and Figure 4 In order to facilitate the support plate 3 to slide downward relative to the mounting plate 4, the limit mechanism is triggered to release the restriction on the pipeline, the trigger member includes a connecting rope 13, the connecting rope 13 corresponds to the limit block 8 one by one, one end of the connecting rope 13 is fixed to the bottom wall of the groove 17, and the other end slides through the mounting plate 4 and extends into the mounting frame 19 and is fixedly connected to the end of the limit block 8 away from the corresponding slot 9. The connecting rope 13 is used to pull the limit block 8 to slide in the direction away from the corresponding slot 9. A channel 20 for the connecting rope 13 to slide through is opened in the mounting plate 4, one end of the channel 20 is connected to the corresponding mounting frame 19, and the other end passes through the bottom wall of the mounting plate 4; when the push spring 11 is in a natural state, the connecting rope 13 is in a tensioned state.

[0032] When the pipeline is installed or spliced, the support plate 3 is driven to descend. Since the limiting belt 6 is still tied to the installed pipeline at this time, the installation plate 4 and the pipeline are relatively fixed and will not descend with the support plate 3. As the support plate 3 gradually moves downward, the support plate 3 pulls the connecting rope 13, so that the connecting rope 13 pulls the limit block 8 to slide in the direction away from the corresponding slot 9, so that the limit block 8 is disengaged from the corresponding locking hole 10. At this time, the locking piece 7 is not limited by the limit block 8, and the torsion spring 12 drives the reel 5 to rotate, and the reel 5 reels the corresponding limiting belt 6, thereby releasing the restriction on the pipeline. After there is no restriction, the installation plate 4 descends under the action of gravity and falls into the groove 17 to reset. There is no need to manually release the restrictions of multiple limit mechanisms, which saves manpower and is simple and convenient.

[0033] Reference Figure 3 and Figure 4 A spring 15 is sleeved on one end of the guide rod 14 away from the mounting plate 4. One end of the spring 15 is fixed on the bottom wall of the support plate 3, and the other end is arranged on the side of the guide rod 14 away from the mounting plate 4. The spring 15 is used to push the guide rod 14 to drive the mounting plate 4 to move and reset. When the spring 15 is in a natural state, the bottom wall of the mounting plate 4 abuts against the bottom wall of the groove 17. The arrangement of the spring 15 ensures that the mounting plate 4 is reset after the support plate 3 and the mounting plate 4 slide relative to each other.

[0034] Reference Figure 3 and Figure 4 A plurality of balls 16 are rolled and embedded on one side of the limiting belt 6 close to the pipeline, and the balls 16 are used to abut against the outer wall of the pipeline. The pipeline can slide in the horizontal direction even under the restriction of the limiting belt 6, which is convenient for installation and splicing.

[0035] The implementation principle of the embodiment of the present application is as follows: when in use, the support plate 3 is driven to descend, so that the support plate 3 and the mounting plate 4 are lowered in height, and then the pipeline is placed between the corresponding reel 5 and the slot 9 on the mounting plate 4, and then the corresponding locking piece 7 is pulled, and the locking piece 7 drives the limiting belt 6 on the corresponding side to stretch, so that the reel 5 unwinds the limiting belt 6, and the torsion spring 12 is deformed, and then the locking piece 7 is inserted into the corresponding slot 9, and the locking piece 7 and the inclined surface of the corresponding limit block 8 slide relative to each other, pushing the limit block 8 to slide in the direction away from the corresponding slot 9, and the limit block 8 presses The push spring 11 is retracted until the locking piece 7 abuts against the bottom wall of the corresponding slot 9. At this time, the locking hole 10 is aligned with the limit block 8. The compressed push spring 11 pushes the limit block 8 to slide in the direction close to the corresponding slot 9, so that the limit block 8 slides into the corresponding locking hole 10, thereby restricting the locking piece 7 and fixing the locking piece 7 and the mounting plate 4 relatively. Then, the support plate 3 is driven to drive the mounting plate 4 and the pipeline on the mounting plate 4 to rise. Under the restricting action of the limiting belt 6, the pipeline is not easy to fall. After the pipeline is moved to the installation height, the pipeline is installed or spliced.

[0036] When the pipeline is installed or spliced, the support plate 3 is driven to descend. Since the limiting belt 6 is still tied to the installed pipeline at this time, the installation plate 4 is relatively fixed to the pipeline and will not descend with the support plate 3. As the support plate 3 gradually moves downward, the support plate 3 compresses the spring 15, and the support plate 3 pulls the connecting rope 13, so that the connecting rope 13 pulls the limit block 8 to slide in the direction away from the corresponding slot 9, so that the limit block 8 is disengaged from the corresponding locking hole 10. At this time, the locking piece 7 is not limited by the limit block 8, and the torsion spring 12 drives the reel 5 to rotate, and the reel 5 rewinds the corresponding limiting belt 6, thereby releasing the restriction on the pipeline, and the installation plate 4 descends under the action of gravity and the thrust of the spring 15, moves into the groove 17, and is reset. There is no need to manually release the restriction of the pipeline by multiple limiting mechanisms, which helps to save manpower and facilitate the operation of the operator.

[0037] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An assembled installation device for building mechanical and electrical engineering, comprising a base (1), a vertical rod (2) arranged on the base (1), and a support plate (3) slidably mounted on the vertical rod (2), characterized in that: A mounting plate (4) is slidably arranged on the support plate (3); the sliding direction of the mounting plate (4) is parallel to the sliding direction of the support plate (3); a plurality of limiting mechanisms are arranged on the mounting plate (4); the limiting mechanisms are used to restrict or release restrictions on pipelines; a triggering member is arranged on the support plate (3); the triggering member is used to trigger the limiting mechanism to release restrictions on the pipeline when the support plate (3) slides downward relative to the mounting plate (4).

2. The assembly installation device for building mechanical and electrical engineering according to claim 1, characterized in that: The limiting mechanism comprises a reel (5) rotatably arranged on the mounting plate (4), a limiting belt (6) wound around the reel (5), a locking piece (7) arranged at one end of the limiting belt (6) away from the reel (5), an elastic member arranged on the mounting plate (4) and a locking assembly arranged on the mounting plate (4); the rotation axis of the reel (5) is parallel to the length direction of the pipeline; the limiting belt (6) is used to bind the corresponding pipeline; the elastic member is used to drive the reel (5) to rotate to reel up the limiting belt (6); a slot (9) is provided on the mounting plate (4); the slot (9) corresponds to the locking piece (7) one by one; the locking piece (7) is used to be inserted into the corresponding slot (9); and the locking assembly is used to fix the locking piece (7) relative to the mounting plate (4) after being inserted into the slot (9).

3. The assembly installation device for building mechanical and electrical engineering according to claim 2 is characterized by: The locking assembly comprises a limit block (8) slidably inserted into the mounting plate (4) and a pushing member arranged in the mounting plate (4); the limit block (8) corresponds to the slot (9) one by one; the sliding direction of the limit block (8) is perpendicular to the rotation axis of the reel (5); the limit block (8) is slidably inserted into the slot (9); a side of the limit block (8) close to the corresponding slot (9) is an inclined surface; the locking sheet (7) is used to slide relative to the inclined surface of the limit block (8); a locking hole (10) for the limit block (8) to pass through is provided on the locking sheet (7); and the pushing member is used to push the limit block (8) to slide in a direction close to the corresponding slot (9).

4. The assembly installation device for building mechanical and electrical engineering according to claim 3 is characterized by: The pushing member comprises a push spring (11) for pushing the limit block (8) to slide in a direction close to the corresponding slot (9); one end of the push spring (11) is arranged in the mounting plate (4), and the other end is arranged on the limit block (8).

5. The assembly installation device for building mechanical and electrical engineering according to claim 2 is characterized by: The elastic member comprises a torsion spring (12) for driving the reel (5) to rotate to reel up the limiting belt (6); one end of the torsion spring (12) is arranged on the mounting plate (4), and the other end is arranged on the reel (5).

6. The assembly installation device for building mechanical and electrical engineering according to claim 3 is characterized by: The trigger member comprises a connecting rope (13) arranged on the support plate (3), the connecting rope (13) slidingly passes through the mounting plate (4) and is connected to a side of the limit block (8) away from the corresponding slot (9), and the connecting rope (13) is used to pull the limit block (8) to slide in a direction away from the corresponding slot (9).

7. A building mechanical and electrical engineering assembly installation device according to any one of claims 1 to 6, characterized in that: A guide rod (14) is provided on the mounting plate (4), and the guide rod (14) is slidably penetrated on the support plate (3), and the sliding direction of the guide rod (14) is parallel to the sliding direction of the mounting plate (4).

8. The assembly installation device for building mechanical and electrical engineering according to claim 7, characterized in that: A spring (15) is sleeved on the guide rod (14), one end of the spring (15) is arranged on the support plate (3), and the other end is arranged on a side of the guide rod (14) away from the mounting plate (4). The spring (15) is used to push the guide rod (14) to drive the mounting plate (4) to move and reset. When the spring (15) is in a natural state, the bottom wall of the mounting plate (4) abuts against the support plate (3).

9. The assembly installation device for building mechanical and electrical engineering according to claim 2, characterized in that: A plurality of balls (16) are rollably arranged on one side of the limiting belt (6) close to the pipeline.

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