A conveyor track quick-change elbow

Abstract

The present invention relates to the technical field of conveyor rails, and specifically to a conveyor rail quick-change elbow, comprising a curved guide rail, parallel pad rails matching therewith are arranged at both ends of the curved guide rail, a quick-change elbow pad is arranged below the curved guide rail, a quick-change parallel pad is arranged below the parallel pad, a curved rail connecting lining and a parallel connecting lining are arranged at the connection between the curved guide rail and the parallel pad, and the beneficial effects are as follows: the conveyor chain is supported by the integrated molding of the curved guide rail and the parallel pad, the bending angle can be accurately customized, and it is more stable than the traditional split track elbow, and matching quick-change parallel pads and quick-change elbow pads are arranged below the curved guide rail and the parallel pad, the quick-change elbow pad realizes semi-enclosed clip-on installation of the curved guide rail through a curved frame and a curved guardrail, the whole is completely matched with the curve of the curved guide rail, and a snap-on quick connection mechanism is adopted instead of bolt connection to improve the stability and convenience of the connection.

Description

Technical Field

[0001] The invention belongs to the technical field of conveyor tracks, and in particular relates to a conveyor track quick-change elbow. Background Art

[0002] The conveyor track quick-change elbow is a component used to change the direction of the conveyor track, and is commonly used in automated production lines, logistics systems, and material handling systems. The design purpose of this elbow is to facilitate the rapid replacement and adjustment of the direction of the track, thereby improving production efficiency and flexibility. In the prior art, the traction force of the chain in the track is a unidirectional vector force, and the transmission of the chain cannot always remain in the vector direction, so it is necessary to use an overhead curved track to change the direction of the chain. If the existing track elbow is used for a long time, the damaged elbow needs to be replaced. The replacement requires the line to be stopped for maintenance. Replacing the entire elbow also requires professional operation, and the chain needs to be cut off, and the chain and the new elbow need to be installed, which affects production efficiency.

[0003] The existing Chinese patent document with publication number CN215556717U proposes an overhead track quick-change elbow for a suspended conveyor, which solves the above problem by decomposing the elbow into an inner elbow component and an outer elbow component. When replacing, the damaged inner elbow component can be directly removed, and a new inner elbow component can be replaced with a bolt to fix it. However, during the operation of the conveyor, the bolts will gradually loosen due to vibration. After long-term use, wear will occur between the bolts and the threads, causing the connection between the inner and outer components of the elbow to become loose, affecting the stability of the overall structure, and may also cause the angle of the elbow to change, resulting in problems affecting the accuracy of the conveyor track.

[0004] Therefore, the present invention proposes a quick-change elbow for a conveyor track, which solves the problem in the prior art that decomposing the elbow into an inner elbow component and an outer elbow component will affect the stability of the overall structure and thus cause the angle of the elbow to change, affecting the accuracy of the conveyor track. The inner elbow component and the outer elbow component are designed as an integrated structure, and a snap-on quick connection mechanism is used instead of bolt connection to improve the stability and convenience of the connection. Summary of the invention

[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide a conveyor track quick-change elbow to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a conveyor track quick-change bend, comprising a curved guide rail, parallel pad rails matching the curved guide rail are arranged at both ends of the curved guide rail, a quick-change elbow pad is arranged below the curved guide rail, a quick-change parallel pad is arranged below the parallel pad, a curved rail connecting liner and a parallel connecting liner are arranged at the connection between the curved guide rail and the parallel pad, the curved rail connecting liner is fixedly mounted at both ends of the quick-change elbow pad, and the parallel connecting liner is fixedly mounted at one end of the quick-change parallel pad close to the curved guide rail.

[0007] Preferably, a bending frame is symmetrically fixedly installed inside the quick-change elbow pad, a metal bending pipe ring is movably installed above the bending frame, an arc-shaped extrusion sheet is arranged between the inner surface of the metal bending pipe ring and the inner wall of the quick-change elbow pad, and an assembly groove which is compatible with the bending frame and the metal bending pipe ring is opened on the lower surface of the bending guide rail.

[0008] Preferably, curved guardrails are fixedly installed on the outer edges of both sides of the quick-change elbow pad, a curved locking groove is provided on the upper surface of the curved guardrail, a curved mounting strip is movably installed inside the curved guardrail, a W-shaped curved gasket is fixedly installed on one side of the curved mounting strip, one side surface of the W-shaped curved gasket is fixedly connected to the inner surface of the curved guardrail, and a second assembly groove matching the curved mounting strip is provided on the side surface of the curved guide rail.

[0009] Preferably, rack blocks are fixedly installed below the inner surfaces of both ends of the curved guardrail, and bolt slots are provided on the outer surfaces of both ends of the quick-change elbow pad.

[0010] Preferably, the outer side surface of the parallel connection liner is provided with a rack slot adapted to the rack plug-in block, gears are symmetrically rotatably installed on both sides of the interior of the parallel connection liner, and a rack slider is slidably installed in the middle part of the interior of the parallel connection liner, and the side surfaces of the rack slider are respectively meshed with the outer side surfaces of the gears.

[0011] Preferably, a slot compatible with the rack slider is provided inside the curved rail connecting lining, a locking block is provided inside the curved rail connecting lining, a locking hook is symmetrically and movably installed inside the locking block, an elastic gasket is fixedly installed on one side surface of the locking hook, one side of the elastic gasket is fixedly connected to the inner surface of the locking block, a trapezoidal boss is fixedly installed on the front end of the rack slider, and a locking hole compatible with the locking hook is opened on the inner side wall of the front end of the rack slider.

[0012] Preferably, a parallel frame is symmetrically fixedly installed inside the quick-change parallel pad, a metal straight tube ring is movably installed above the parallel frame, an arc-shaped extrusion sheet is arranged between the inner surface of the metal straight tube ring and the inner wall of the quick-change parallel pad, and an assembly groove three matching the parallel frame and the metal straight tube ring is opened on the lower surface of the parallel pad rail.

[0013] Preferably, parallel guardrails are fixedly installed on the outer edges of both sides of the quick-change parallel pad block, parallel locking grooves are provided on the upper surfaces of the parallel guardrails, parallel installation strips are movably installed inside the parallel guardrails, a W-shaped parallel gasket is fixedly installed on one side of the parallel installation strip, one side surface of the W-shaped parallel gasket is fixedly connected to the inner surface of the parallel guardrail, and a side surface of the parallel pad rail is provided with four assembly grooves matched with the parallel installation strips.

[0014] Preferably, a bolt insert is provided at one end where the parallel guardrail is connected to the curved guardrail, and the bolt insert is fixedly connected to the bolt slot by bolts.

[0015] Preferably, an integrally connected guard plate is provided on the outer side of the parallel guardrail and the curved guardrail, and a snap-fitting strip matching the curved snap-fitting groove and the parallel snap-fitting groove is fixedly installed on the top of the integrally connected guard plate, and the integrally connected guard plate is fixedly installed on the outer side of the parallel guardrail and the curved guardrail by bolts.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The conveyor chain is supported and guided by the integrated molding of the curved guide rail and the parallel pad rail. The bending angle can be precisely customized, which is more stable than the traditional split track elbow. Matching quick-change parallel pads and quick-change elbow pads are arranged under the curved guide rail and the parallel pad rail. The quick-change elbow pad is installed in a semi-enclosed manner through the curved frame and the curved guardrail. The whole is completely adapted to the curve of the curved guide rail. The snap-on quick connection mechanism is used instead of the bolt connection to improve the stability and convenience of the connection. The structure of the quick-change parallel pad is similar to that of the quick-change elbow pad. The parallel pad rail is semi-enclosed. Clip-in installation, parallel connecting linings and curved rail connecting linings are arranged at the connection between the quick-change parallel pads and the quick-change elbow pads, and through the cooperation of the gears and racks, the clip-in locking and fixing are realized during installation, which is convenient for realizing the effect of quickly replacing and installing the track elbow. After the installation is completed, an integrated connecting guard plate is used to connect and fix the outside, so that the parallel pad rails and the curved guide rails are installed in an integrated structure, which improves the rigidity and stability of the overall structure, and solves the problem that the prior art decomposes the elbow into the inner and outer components of the elbow, which affects the stability of the overall structure and causes the angle of the elbow to change, affecting the accuracy of the conveyor track. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure after the overall installation of the present invention is completed.

[0019] Figure 2 It is a schematic diagram of the structure when the whole installation of the present invention is completed as seen from above.

[0020] Figure 3 This is a schematic diagram of the structure after the integrated connection guard plate of the present invention is disassembled.

[0021] Figure 4 It is a schematic diagram of the disassembly structure of the curved guide rail and the parallel pad rail of the present invention.

[0022] Figure 5 It is a schematic diagram of the installation structure of the parallel connection lining and the curved rail connection lining of the present invention.

[0023] Figure 6 It is a schematic diagram of the exploded structure of the parallel guardrail and the curved guardrail of the present invention.

[0024] Figure 7 It is a schematic diagram of the structure of the quick-change elbow pad of the present invention.

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the connection between the parallel connection lining and the curved rail connection lining of the present invention.

[0026] Fig. 9 It is a schematic diagram of the cross-sectional structure of the locking block of the present invention.

[0027] Fig.10 It is a schematic diagram of the top view of the structure of the quick-change elbow pad of the present invention.

[0028] Fig.11 It is a schematic diagram of the curved guide rail installation structure of the present invention.

[0029] Fig.12 It is a schematic diagram of the curved guardrail structure of the present invention.

[0030] Fig.13 It is a schematic structural diagram of one end of the quick-change elbow pad of the present invention.

[0031] Fig.14 For the present invention Fig. 9 Schematic diagram of the structure at point A.

[0032] Fig.15 For the present invention Fig.13 Schematic diagram of the structure at point B.

[0033] In the figure: 1, curved guide rail; 2, parallel rail; 3, quick-change parallel pad; 31, parallel frame; 311, metal straight pipe ring; 32, parallel guardrail; 321, parallel snap-in groove; 322, parallel mounting clip; 3221, W-shaped parallel gasket; 323, bolt insert; 33, parallel reinforcement pad; 331, parallel insert; 4, parallel connection lining; 41, rack slot; 42, gear; 43, rack slider; 5, Quick-change elbow pad; 51, bending frame; 511, metal bending pipe ring; 52, bending guardrail; 521, bending snap-fit ​​groove; 522, bending installation clamping strip; 5221, W-shaped bending gasket; 523, rack plug-in block; 524, bolt slot; 53, bending reinforcement pad; 531, bending plug-in plate; 6, bending rail connecting lining; 61, locking block; 611, locking hook; 6111, elastic gasket; 7, integrated connection guard plate; 71, snap-fit ​​strip. DETAILED DESCRIPTION

[0034] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Embodiment 1

[0036] See also Figures 1 to 15The present invention provides a technical solution: comprising a curved guide rail 1, parallel pad rails 2 adapted thereto are arranged at both ends of the curved guide rail 1, a quick-change elbow pad block 5 is arranged below the curved guide rail 1, a quick-change parallel pad block 3 is arranged below the parallel pad rail 2, a curved rail connection lining 6 and a parallel connection lining 4 are arranged at the connection between the curved guide rail 1 and the parallel pad rail 2, the curved rail connection lining 6 is fixedly installed at both ends of the quick-change elbow pad block 5, the parallel connection lining 4 is fixedly installed at one end of the quick-change parallel pad block 3 close to the curved guide rail 1, a curved frame 51 is symmetrically fixedly installed inside the quick-change elbow pad block 5, a metal bending pipe ring 511 is movably installed above the curved frame 51, and the metal bending pipe ring 511 is movably installed above the curved frame 51. An arc-shaped extrusion sheet is arranged between the inner surface 11 and the inner wall of the quick-change elbow pad 5, an assembly groove 1 adapted to the bending frame 51 and the metal bending pipe ring 511 is provided on the lower surface of the curved guide rail 1, curved guardrails 52 are fixedly installed on the outer sides of both sides of the quick-change elbow pad 5, a curved engaging groove 521 is provided on the upper surface of the curved guardrail 52, a curved installation clip 522 is movably installed inside the curved guardrail 52, a W-shaped curved gasket 5221 is fixedly installed on one side of the curved installation clip 522, one side surface of the W-shaped curved gasket 5221 is fixedly connected to the inner surface of the curved guardrail 52, and an assembly groove 2 adapted to the curved installation clip 522 is provided on the side surface of the curved guide rail 1;

[0037] In this embodiment, the curved guide rail 1 and the parallel pad rail 2 form a conveyor chain track, which is made of polymer materials to achieve one-piece molding. The length and bending angle can be precisely customized. The quick-change elbow pad 5 and the quick-change parallel pad 3 mainly play the role of semi-enclosed clamping and fixing the curved guide rail 1 and the parallel pad rail 2, and cooperate with the parallel connection lining 4 and the curved rail connection lining 6 to achieve rapid installation and replacement of the curved guide rail 1;

[0038] In this embodiment, the bent skeleton 51 inside the quick-change elbow pad 5 not only serves to increase the reinforcing ribs to improve the rigidity and stability of the overall structure, but also the metal bent pipe ring 511 is squeezed when the bent guide rail 1 is installed, and then under the elastic action of the arc-shaped extrusion sheet, it is tightly engaged with the inner wall of the assembly groove 1 of the bent guide rail 1 to achieve rapid installation of the bent guide rail 1 and the quick-change elbow pad 5. It is worth noting that the bending angles of the bent skeleton 51 and the quick-change elbow pad 5 are fully compatible with the bent guide rail 1, and the bent guardrail 52 surrounds the outer side of the bent guide rail 1 on the outside. The bent installation strip 522 is squeezed during installation, and then is squeezed into the assembly groove 2 of the bent guide rail 1 under the extrusion of the W-shaped bent gasket 5221, so that the bent guide rail 1 is connected to the quick-change elbow pad 5 as a whole after installation, thereby increasing the stability of the installation assembly.

[0039] Embodiment 2

[0040] See also Figures 1 to 15On the basis of the first embodiment, in order to make the installation of the curved guide rail 1 and the bottom of the quick-change elbow pad 5 more stable, the present embodiment further proposes that a curved reinforcement pad 53 is movably installed below the quick-change elbow pad 5 by bolts, and a curved insert plate 531 is symmetrically fixedly installed on the upper surface of the curved reinforcement pad 53, and the outer surface of the curved insert plate 531 is clamped with the inner surface of the curved frame 51, and the upper end of the curved insert plate 531 is provided with a semicircular clamping groove adapted to the metal curved pipe ring 511.

[0041] In this embodiment, after the curved guide rail 1 and the curved frame 51 are engaged and installed, the curved reinforcement pad 53 is inserted from the bottom so that the curved insert plate 531 is inserted into the interior of the curved frame 51, and the upper semicircular groove of the curved insert plate 531 is fixedly engaged with the inner side of the metal curved pipe ring 511, thereby increasing the strength of the curved frame 51 and making the curved guide rail 1 and the bottom of the quick-change elbow pad 5 more stable and tighter.

[0042] Embodiment 3

[0043] See also Figures 1 to 15 On the basis of the second embodiment, in order to facilitate the quick installation of the curved track connection lining 6 and the parallel connection lining 4, the present embodiment further proposes that rack plugs 523 are fixedly installed below the inner surfaces of both ends of the curved guardrail 52, bolt slots 524 are provided on the outer surfaces of both ends of the quick-change elbow pad 5, and rack slots 41 adapted to the rack plugs 523 are provided on the outer side surface of the parallel connection lining 4. Gears 42 are symmetrically installed on both sides of the interior of the parallel connection lining 4 for rotation, and a rack slider 43 is slidably installed on the inner middle of the parallel connection lining 4. The outer side of the rack slider 43 is provided with a gear 42, and the gear 42 is symmetrically installed on both sides of the interior of the parallel connection lining 4 for rotation. The side surfaces are respectively meshed with the inner surface of the gear 42, a slot matching the rack slider 43 is arranged inside the curved track connection lining 6, a locking block 61 is arranged inside the curved track connection lining 6, a locking hook 611 is symmetrically and movably installed inside the locking block 61, a spring washer 6111 is fixedly installed on one side surface of the locking hook 611, one side of the spring washer 6111 is fixedly connected to the inner surface of the locking block 61, a trapezoidal convex head is fixedly installed on the front end of the rack slider 43, and a locking hole matching the locking hook 611 is opened on the inner side wall of the front end of the rack slider 43;

[0044] In this embodiment, one end of the curved guardrail 52 is pushed and engaged with one end of the parallel guardrail 32, so that the bolt slot 524 is engaged with the bolt insert 323 and then fixed with bolts. At this time, the rack insert block 523 is inserted into the rack slot 41, and contacts with the outer side of the gear 42 to drive the gear 42 to rotate. Because the outer side of the rack slider 43 is meshed with the inner side of the gear 42, the rotation of the gear 42 causes the rack slider 43 to slide out and insert into the curved track connecting lining 6. The trapezoidal convex head at the front end of the rack slider 43 pushes the front end of the locking block 61 to separate the locking hook 611, so that one end of the locking hook 611 is engaged with the rack slider 43. The locking hole is clamped, thus completing the locking of the rack slider 43, so that the curved rail connecting liner 6 is fixedly connected to the parallel connecting liner 4, completing the rapid assembly and connection of the curved guide rail 1 and the parallel pad rail 2. When disassembly is required, loosen the bolt between the bolt slot 524 and the bolt insert 323, and pull out the parallel connecting liner 4. At this time, the gear 42 rotates in the opposite direction to make the rack slider 43 retreat a little distance. At this time, the trapezoidal convex head releases the squeezing of the locking hook 611, so that the locking hook 611 gathers with the cooperation of the elastic gasket 6111, and withdraws from the locking of the rack slider 43. In this way, continue to pull out the parallel connecting liner 4 to complete the disassembly.

[0045] Embodiment 4

[0046] See also Figures 1 to 15 On the basis of the third embodiment, in order to realize the rapid assembly of the quick-change parallel pad 3, the present embodiment further proposes that a parallel frame 31 is symmetrically fixedly installed inside the quick-change parallel pad 3, a metal straight tube ring 311 is movably installed above the parallel frame 31, an arc-shaped extrusion sheet is arranged between the inner surface of the metal straight tube ring 311 and the inner wall of the quick-change parallel pad 3, an assembly groove 3 adapted to the parallel frame 31 and the metal straight tube ring 311 is opened on the lower surface of the parallel pad rail 2, and parallel guardrails 32 are fixedly installed on the outer sides of both sides of the quick-change parallel pad 3, and the parallel guardrails A parallel engaging groove 321 is provided on the upper surface of the parallel guardrail 32, a parallel mounting clip 322 is movably installed inside the parallel guardrail 32, a W-shaped parallel gasket 3221 is fixedly installed on one side of the parallel mounting clip 322, one side surface of the W-shaped parallel gasket 3221 is fixedly connected to the inner side surface of the parallel guardrail 32, a mounting groove 4 adapted to the parallel mounting clip 322 is provided on the side surface of the parallel pad rail 2, a bolt insert 323 is provided at one end of the parallel guardrail 32 connected to the curved guardrail 52, and the bolt insert 323 is fixedly connected to the bolt slot 524 by bolts;

[0047] In this embodiment, the parallel skeleton 31 serves to increase the stiffening ribs inside the quick-change parallel pad 3 to improve the rigidity of the overall structure. At the same time, the metal straight tube ring 311 is squeezed when the curved guide rail 1 is installed, and then under the elastic action of the arc-shaped extrusion sheet, it is tightly engaged with the inner wall of the assembly groove three of the parallel pad rail 2 to achieve rapid installation of the parallel pad rail 2 and the quick-change parallel pad 3. The parallel guardrail 32 surrounds the outside of the parallel pad rail 2. The parallel installation clip 322 is squeezed during installation, and then under the extrusion of the W-shaped parallel gasket 3221, it is inserted into the assembly groove four of the parallel rail 2, so that the parallel rail 2 is connected to the quick-change parallel pad 3 as a whole after installation, thereby increasing the stability of the installation assembly.

[0048] Embodiment 5

[0049] See also Figures 1 to 15 On the basis of the fourth embodiment, in order to make the curved guide rail 1 and the parallel pad rail 2 more stable after being assembled, the present embodiment further proposes that an integrally connected guard plate 7 is provided on the outer side of the parallel guardrail 32 and the curved guardrail 52, and a snap-fitting strip 71 matching the curved snap-fitting groove 521 and the parallel snap-fitting groove 321 is fixedly installed on the upper side of the integrally connected guard plate 7, and the integrally connected guard plate 7 is fixedly installed on the outer side of the parallel guardrail 32 and the curved guardrail 52 by bolts;

[0050] In this embodiment, after the parallel connecting liner 4 is engaged with the curved rail connecting liner 6 and the curved guardrail 52 is fixed to the parallel guardrail 32 with bolts, the integrated connecting guard plate 7 is installed on the outside of the parallel guardrail 32 and the curved guardrail 52 to ensure that the locking strip 71 is locked into the curved locking groove 521 and the parallel locking groove 321. The locking strip 71 will squeeze the W-shaped parallel gasket 3221 and the W-shaped curved gasket 5221 to strengthen the fixing effect of the parallel installation clip 322 and the curved installation clip 522 on the quick-change parallel pad 3 and the quick-change elbow pad 5. Finally, bolts are used to fix the parallel pad rail 2 and the curved guide rail 1 so that the installation presents an integrated structure, thereby improving the rigidity and stability of the overall structure.

[0051] Embodiment 6

[0052] See also Figures 1 to 15 Based on the fifth embodiment, this embodiment further proposes a method for quickly installing a conveyor track quick-change elbow, comprising the following steps:

[0053] Step 1: Assemble the quick-change elbow pad 5 and the curved guide rail 1, install the curved guide rail 1 on the quick-change elbow pad 5, and ensure that the curved frame 51 and the curved guardrail 52 are clamped with the assembly grooves at the bottom and side of the curved guide rail 1 respectively;

[0054] Step 2, assemble the quick-change parallel pad 3 and the parallel pad rail 2, install the parallel pad rail 2 on the parallel pad rail 2, and ensure that the parallel frame 31 and the parallel guardrail 32 are clamped with the assembly grooves at the bottom and side of the parallel pad rail 2 respectively;

[0055] Step 3: Connect the parallel connection lining 4 and the curved track connection lining 6, push one end of the curved guardrail 52 and one end of the parallel guardrail 32 to engage, the rack insert block 523 will be inserted into the rack slot 41, contact with the outer side of the gear 42 to drive the gear 42 to rotate so that the rack slider 43 slides out and inserts into the curved track connection lining 6, the trapezoidal convex head at the front end of the rack slider 43 will push the front end of the locking block 61 to separate the locking hook 611, so that one end of the locking hook 611 is clamped with the locking hole of the rack slider 43, and the bolt slot 524 and the bolt insert 323 are fixed with bolts;

[0056] Step 4, fix the integrated connecting guard plate 7, install the integrated connecting guard plate 7 on the outside of the parallel guardrail 32 and the curved guardrail 52, ensure that the snap-fit ​​strip 71 is snapped into the curved snap-fit ​​groove 521 and the parallel snap-fit ​​groove 321, and fix it with bolts to complete the assembly.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A conveyor track quick-change elbow, comprising a curved guide rail (1), wherein both ends of the curved guide rail (1) are provided with matching parallel pad rails (2), characterized in that: A quick-change elbow pad (5) is arranged below the curved guide rail (1), a quick-change parallel pad (3) is arranged below the parallel pad rail (2), a curved rail connection lining (6) and a parallel connection lining (4) are arranged at the connection between the curved guide rail (1) and the parallel pad rail (2), the curved rail connection lining (6) is fixedly mounted at both ends of the quick-change elbow pad (5), the parallel connection lining (4) is fixedly mounted at one end of the quick-change parallel pad (3) close to the curved guide rail (1), a curved frame (51) is symmetrically fixedly mounted inside the quick-change elbow pad (5), a metal curved pipe ring (511) is movably mounted above the curved frame (51), and the metal curved pipe ring (511) is movably mounted on the upper side of the curved frame (51). 11) An arc-shaped extrusion sheet is arranged between the inner surface and the inner wall of the quick-change elbow pad (5); the lower surface of the curved guide rail (1) is provided with an assembly groove 1 adapted to the curved frame (51) and the metal curved pipe ring (511); curved guardrails (52) are fixedly installed on the outer sides of both sides of the quick-change elbow pad (5); a curved engaging groove (521) is arranged on the upper surface of the curved guardrail (52); a curved installation clip (522) is movably installed inside the curved guardrail (52); a W-shaped curved gasket (5221) is fixedly installed on one side of the curved installation clip (522); one side surface of the W-shaped curved gasket (5221) is fixed to the inner surface of the curved guardrail (52); The curved guide rail (1) is connected with the outer surface thereof, and a second assembly groove matched with the curved mounting clip (522) is provided on the side surface thereof; rack plugs (523) are fixedly installed below the inner surfaces of both ends of the curved guardrail (52); bolt slots (524) are provided on the outer surfaces of both ends of the quick-change elbow pad (5); a rack slot (41) matched with the rack plugs (523) is provided on the outer side surface of the parallel connection lining (4); gears (42) are symmetrically rotatably installed on both sides of the interior of the parallel connection lining (4); a rack slider (43) is slidably installed in the middle of the interior of the parallel connection lining (4); and the side surfaces of the rack slider (43) are respectively connected with the gears (42) and the rack slider (43) is rotatably installed. The outer surfaces of the wheels (42) are meshed with each other, a slot matched with the rack slider (43) is arranged inside the curved track connecting lining (6), a locking block (61) is arranged inside the curved track connecting lining (6), a locking hook (611) is symmetrically and movably installed inside the locking block (61), an elastic gasket (6111) is fixedly installed on one side surface of the locking hook (611), one side of the elastic gasket (6111) is fixedly connected to the inner surface of the locking block (61), a trapezoidal protrusion is fixedly installed on the front end of the rack slider (43), and a locking hole matched with the locking hook (611) is opened on the inner side wall of the front end of the rack slider (43).

2. The conveyor track quick-change elbow according to claim 1, characterized in that: A parallel frame (31) is symmetrically fixedly installed inside the quick-change parallel pad (3), a metal straight tube ring (311) is movably installed above the parallel frame (31), an arc-shaped extrusion sheet is arranged between the inner surface of the metal straight tube ring (311) and the inner wall of the quick-change parallel pad (3), and a third assembly groove compatible with the parallel frame (31) and the metal straight tube ring (311) is opened on the lower surface of the parallel pad rail (2).

3. The conveyor track quick-change elbow according to claim 2, characterized in that: Parallel guardrails (32) are fixedly mounted on the outer sides of both sides of the quick-change parallel pad (3), a parallel snap-fitting groove (321) is provided on the upper surface of the parallel guardrail (32), a parallel mounting clip (322) is movably mounted inside the parallel guardrail (32), a W-shaped parallel gasket (3221) is fixedly mounted on one side of the parallel mounting clip (322), a side surface of the W-shaped parallel gasket (3221) is fixedly connected to the inner side surface of the parallel guardrail (32), and a mounting groove four adapted to the parallel mounting clip (322) is provided on the side surface of the parallel pad rail (2).

4. The conveyor track quick-change elbow according to claim 3, characterized in that: One end of the parallel guardrail (32) connected to the curved guardrail (52) is provided with a bolt insert (323), and the bolt insert (323) is fixedly connected to the bolt slot (524) by means of bolts.

5. The conveyor track quick-change elbow according to claim 4, characterized in that: An integrally connected guard plate (7) is arranged on the outer sides of the parallel guardrail (32) and the curved guardrail (52); a snap-fitting strip (71) matching the curved snap-fitting groove (521) and the parallel snap-fitting groove (321) is fixedly mounted above the integrally connected guard plate (7); the integrally connected guard plate (7) is fixedly mounted on the outer sides of the parallel guardrail (32) and the curved guardrail (52) by means of bolts.

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