Conveyor capable of switching chains

Abstract

The utility model relates to the technical field of chain type conveying equipment, in particular to a conveyor capable of switching chains, which has a first assembly state and a second assembly state. In the first assembly state, a first chain penetrates through a first notch of a driving module driving shell and is matched with a first driving assembly, the first chain penetrates through a first notch of a driven module driving shell and is matched with a first driven assembly, and a first plug and a second plug are contained in the inner sides of the first notches in the two sides respectively; in the second assembly state, the second chain penetrates through the first notches of the driving module driving shell and is matched with the second driving assembly, the second chain penetrates through the first notches of the driven module driving shell and is matched with the second driven assembly, and the third plug and the fourth plug are contained in the inner sides of the first notches in the two sides respectively. According to the conveyor, unified stock-up of the driving shells is achieved, stock-up of the driving shells does not need to be conducted according to different types of chains, and the stock-up difficulty and cost are further reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of chain conveyor equipment, specifically a conveyor with switchable chains. Background Technology

[0002] In the light-duty conveyor series of standardized pallet systems, the conveying media commonly used by conveyors are divided into belt conveyors and chain conveyors. Belt conveyors offer smooth conveying and low noise, but have a relatively small conveying load; chain conveyors are noisier, and pallets shake and become unstable when stacked, but they have a larger conveying load. Therefore, chain conveyors are usually chosen for transportation scenarios with large conveying loads.

[0003] Chain-type conveying media include various structures and types, such as accumulating roller chains, flat-top chains, U-shaped auxiliary plate chains, and double-speed chains. Double-speed chains further include different specifications, such as 2.5x speed chains and single-speed chains. During the design and manufacturing of conveyors, corresponding drive modules, driven modules, and other accessories are designed according to the type of chain configured to meet assembly requirements. For example, due to different diameters of the chain's center wheel, different positions and sizes of slots need to be set on the side walls of the drive and driven modules. Once assembled, if a chain of a different specification is replaced, the chain's center wheel will interfere with the first slot.

[0004] However, in actual transportation, the conveying medium needs to be switched between different types of double-speed chains in some scenarios. If you want to change to a different type of chain, you need to completely replace the corresponding drive module, driven module and other accessories. In addition, when preparing goods, you also need to prepare goods separately according to different types of double-speed chains, which will cause a lot of waste. Therefore, there is no conveyor in the existing technology that can switch chains. Utility Model Content

[0005] In view of the deficiencies of the prior art, the present invention provides a conveyor with switchable chains, which includes a universal drive housing that can switch between different chains without the need to configure housings suitable for different types of chains, thus reducing the difficulty of inventory preparation.

[0006] To achieve the above objectives, the present invention provides a conveyor with a switchable chain, comprising a first line assembly, a second line assembly, a first chain, a second chain, an active module, and a driven module. The first line assembly includes a first profile, a first end cap and a second end cap respectively disposed at both ends of the first profile, and a first heavy-duty return friction strip disposed on the first profile and confined between the first and second end caps. The second line assembly includes a second profile, a third end cap and a fourth end cap respectively disposed at both ends of the second profile, and a second heavy-duty return friction strip disposed on the second profile and confined between the third and fourth end caps. The first chain is disposed on the first profile; the second chain is disposed on the second profile. The active module includes a drive housing, a first active component, and a second active component. The driven module includes a drive housing, a first driven component, and a second driven component. The drive housing has a first slot. The conveyor has a first assembled state and a second assembled state.

[0007] The first assembly state includes the first chain passing through the first slot of the active module drive housing and cooperating with the first active component, the first chain passing through the first slot of the driven module drive housing and cooperating with the first driven component, and the first plug and the second plug being respectively accommodated inside the first slots on both sides;

[0008] The second assembly state includes the second chain passing through the first slot of the active module drive housing and cooperating with the second active component, the second chain passing through the first slot of the driven module drive housing and cooperating with the second driven component, and the third plug and the fourth plug being respectively accommodated inside the first slots on both sides.

[0009] Furthermore, the first chain is a 2.5x speed chain; the second chain is a single speed chain.

[0010] Furthermore, the drive housing includes a drive inner housing, on which a first connecting end, a second connecting end, and a third connecting end are provided in a triangular arrangement.

[0011] Furthermore, the drive housing of the active module includes a drive end side plate fixed to the drive inner housing, and a drive end cavity is formed between the drive inner housing and the drive end side plate, wherein the first active component or the second active component is accommodated in the drive end cavity.

[0012] The first active component includes a first return wheel connected to the first connecting end, a drive sprocket connected to the second connecting end, and a second return wheel connected to the third connecting end; the first chain cooperates with the first return wheel, the drive sprocket, and the second return wheel;

[0013] The second active component includes a third return wheel connected to the first connecting end, a drive sprocket connected to the second connecting end, and a fourth return wheel connected to the third connecting end; the second chain cooperates with the third return wheel, the drive sprocket, and the fourth return wheel.

[0014] Furthermore, the drive housing of the driven module includes a drive inner shell and a driven end side plate fixed to the drive inner shell, and a driven end cavity is formed between the drive inner shell and the driven end side plate, and the first driven component or the second driven component is housed in the driven end cavity.

[0015] The first driven component includes a fifth return wheel connected to the first connecting end and a first driven idler wheel connected to the second connecting end; the first chain cooperates with the fifth return wheel and the first driven idler wheel;

[0016] The second driven component includes a sixth return wheel connected to the first connecting end and a second driven idler wheel connected to the second connecting end; the second chain cooperates with the sixth return wheel and the second driven idler wheel.

[0017] Furthermore, the drive housing has a second slot and a third slot located below the first slot; a tensioning structure connection is provided between the second slot and the third slot on the drive housing.

[0018] Furthermore, when serving as the drive housing of the active module, the tensioning structure connection part is detachably fixed with a tensioning structure, the tensioning structure including a tensioning screw, a tensioning sleeve connected to the tensioning screw, a tensioning wheel bracket fixed to the tensioning sleeve, a tensioning wheel installed on the tensioning wheel bracket, and a tensioning spring disposed between the tensioning screw and the tensioning sleeve;

[0019] The first assembly state includes the first chain passing through the second slot and engaging with the tension wheel, and then passing through the third slot and engaging with the first active component;

[0020] The second assembly state includes the second chain passing through the second slot and engaging with the tension wheel, and then passing through the third slot and engaging with the second drive component.

[0021] Furthermore, the tensioning wheel has a circular wheel structure.

[0022] Furthermore, the top of both the first profile and the second profile is provided with a departure cavity for accommodating the departure of the first chain or the departure of the second chain. Departure friction strip limiting grooves are symmetrically arranged on both sides of the departure cavity. Each departure friction strip limiting groove is equipped with a departure friction strip and several fasteners. The several fasteners are spaced apart between the side surface of the departure friction strip and the side surface of the departure friction strip limiting groove.

[0023] Furthermore, the fastener includes an integrated extrusion part and a positioning part, which form an L-shaped structure. The extrusion part is assembled between the side surface of the outgoing friction strip and the groove stop of the outgoing friction strip limiting groove. By extruding the outgoing friction strip, the outgoing friction strip and the outgoing friction strip limiting groove are tightly fitted. The positioning part is fastened to the upper surface of the groove stop of the outgoing friction strip limiting groove.

[0024] Furthermore, both the first profile and the second profile are provided with a return cavity for accommodating the return of the first chain or the return of the second chain, and the first chain or the second chain is assembled in the return cavity; the first plug and the second plug are respectively bolted to the end faces of both ends of the first profile, and the third plug and the fourth plug are respectively bolted to the end faces of both ends of the second profile.

[0025] The beneficial effects of this utility model are as follows: It adopts a universal drive housing with a first slot. The position and size of the first slot not only accommodate two different specifications of chains but also allow for the installation of plugs at different heights at the ends of the conveyor profiles in both assembly states. When changing the chain, although the wheels on each axle in the internal cavity of the profile and drive housing need to be replaced accordingly, the chain switching can be achieved simply by using the same structure for the drive housing. The conveyor in this utility model achieves unified stocking of drive housings, eliminating the need to stock drive housings separately for different types of chains, further reducing stocking difficulty and cost. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a conveyor with switchable chains in the first assembly state according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the switchable chain conveyor in the second assembly state according to one embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the first line assembly in one embodiment of the present invention;

[0029] Figure 4 This is a bottom view of the first linear assembly in one embodiment of the present invention;

[0030] Figure 5 This is a front view of the first line component in one embodiment of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of the second linear component in one embodiment of the present invention;

[0032] Figure 7This is a bottom view of the second linear assembly in one embodiment of the present invention;

[0033] Figure 8 This is a front view of the second line component in one embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the internal structure of the active module and the driven module of the switchable chain conveyor in the first assembly state according to one embodiment of the present invention.

[0035] Figure 10 This is a schematic diagram of the internal structure of the active module and the driven module of the switchable chain conveyor in a second assembly state according to one embodiment of the present invention.

[0036] Figure 11 This is a schematic diagram of the structure of the driving inner shell in one embodiment of the present invention;

[0037] Figure 12 This is a schematic diagram of the internal structure of the driven module when the switchable chain conveyor is in the first assembly state in one embodiment of the present invention.

[0038] Figure 13 for Figure 12 A schematic diagram of the structure when the fifth rotating wheel is hidden in the middle;

[0039] Figure 14 This is a schematic diagram of the internal structure of the driven module when the switchable chain conveyor is in the second assembly state in one embodiment of the present invention.

[0040] Figure 15 for Figure 14 A schematic diagram of the structure when the sixth cycle wheel is hidden in the middle;

[0041] Figure 16 This is a schematic diagram of the structure of the first profile in one embodiment of the present invention;

[0042] Figure 17 This is a schematic diagram of the structure of the second profile in one embodiment of the present invention;

[0043] Figure 18 This is a schematic diagram of the active module when the switchable chain conveyor is in the first assembly state in one embodiment of the present invention;

[0044] Figure 19 This is a schematic diagram of the active module when the switchable chain conveyor is in the second assembly state in one embodiment of the present invention;

[0045] Figure 20 This is a partial enlarged view of the position of the outgoing friction bar when the switchable chain conveyor is in the first assembly state in one embodiment of the present invention;

[0046] Figure 21 This is a partial enlarged view of the position of the outgoing friction bar when the conveyor with switchable chain is in the second assembly state according to an embodiment of the present invention;

[0047] Figure 22 This is a schematic diagram of the fastener strip in one embodiment of the present invention;

[0048] In the diagram: 100, First line assembly; 110, First profile; 111, Outgoing cavity; 112, Outgoing friction strip limiting groove; 1121, First inner protruding corner; 1122, Second inner protruding corner; 113, Outgoing friction strip; 1131, Positioning groove; 114, Fastening strip; 1141, Extrusion section; 1142, Positioning section; 1143, Opening groove; 115, Return cavity; 120, First plug; 130, Second plug; 140, First heavy-duty return friction strip.

[0049] 200. Second line assembly; 210. Second profile; 211. Outgoing cavity; 212. Outgoing friction strip limiting groove; 2121. First inner buckle protrusion; 2122. Second inner buckle protrusion; 213. Outgoing friction strip; 2131. Positioning groove; 214. Fastening strip; 2141. Extrusion part; 2142. Positioning part; 2143. Opening groove; 215. Return cavity; 220. Third plug; 230. Fourth plug; 240. Second heavy-duty return friction strip.

[0050] 300. The first link in the chain.

[0051] 400. The second chain.

[0052] 500. Active module; 510. First active component; 511. First return wheel; 512. Drive sprocket; 513. Second return wheel; 520. Second active component; 521. Third return wheel; 522. Drive sprocket; 523. Fourth return wheel; 530. Drive end side plate.

[0053] 600. Driven module; 610. First driven assembly; 611. Fifth return wheel; 612. First driven idler wheel; 620. Second driven assembly; 621. Sixth return wheel; 622. Second driven idler wheel; 630. Driven end side plate.

[0054] 700. Drive housing; 720. Drive inner housing; 721. First connecting end; 722. Second connecting end; 723. Third connecting end; 724. First slot; 725. Bottom of inner housing; 726. Outer wall; 727. Back plate; 728. Upper part of inner housing; 729. Inner side wall; 7291. Horizontal extension platform; 7292. Second slot; 7293. Third slot; 7294. Tensioning structure connecting part.

[0055] 800. Tensioning structure; 810. Tensioning screw; 820. Tensioning sleeve; 830. Tensioning wheel bracket; 840. Tensioning wheel; 850. Tensioning spring. Detailed Implementation

[0056] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0057] See Figure 1 and Figure 2 The diagram illustrates the structure of a switchable chain conveyor in two different assembly states, including a first line assembly 100, a second line assembly 200, a first chain 300, a second chain 400, an active module, and a driven module. Figure 1 As shown, in the first assembly state, the first line assembly 100, the first chain 300, the driving module, and the driven module are assembled into a whole, constituting the conveyor of the first type; as Figure 2 As shown, when in the first assembly state, the second line assembly 200, the second chain 400, the active module and the driven module are assembled into a whole to form the second type of conveyor.

[0058] See Figure 3 , Figure 4 and Figure 5 The first line assembly 100 includes a first profile 110, a first plug 120 and a second plug 130 respectively disposed at both ends of the first profile 110, a first heavy-duty return friction strip 140 disposed on the first profile 110 and confined between the first plug 120 and the second plug 130, and a first chain 300 disposed on the first profile 110. Specifically, as follows: Figure 5As shown, in one embodiment, the first profile 110 is provided with a return cavity 115 for accommodating the return stroke of the first chain 300, and the first chain 300 is assembled inside the return cavity 115. A first plug 120 and a second plug 130 are respectively bolted to the end faces of both ends of the first profile 110. The first plug 120 and the second plug 130 installed at both ends respectively block the first heavy-duty return friction strip 140 from both sides to limit the relative position of the first heavy-duty return friction strip 140 and the first profile 110. During the transmission of the first chain 300, the return stroke of the first chain 300 rubs against the first heavy-duty return friction strip 140. The length of the first heavy-duty return friction strip 140 is the same as the length of the first profile 110. In this embodiment, the cross-section of the first heavy-duty return friction strip 140 is square.

[0059] Similarly, see Figure 6 , Figure 7 and Figure 8 The second line assembly 200 includes a second profile 210, a third plug 220 and a fourth plug 230 respectively disposed at both ends of the second profile 210, a second heavy-duty return friction strip 240 disposed on the second profile 210 and confined between the third plug 220 and the fourth plug 230, and a second chain 400 disposed on the second profile 210. Specifically, as follows... Figure 8 As shown, in one embodiment, each of the second profiles 210 is provided with a return cavity 215 for accommodating the return of the second chain, and the second chain 400 is assembled inside the return cavity 215; the third plug 220 and the fourth plug 230 are respectively bolted to the end faces of both ends of the second profile 210. The third plug 220 and the fourth plug 230 installed at both ends block the second heavy-duty return friction strip 240 from both sides to limit the relative position of the second heavy-duty return friction strip 240 and the second profile 210. During the transmission of the second chain 400, the return of the second chain 400 rubs against the second heavy-duty return friction strip 240. The length of the second heavy-duty return friction strip 240 is the same as the length of the second profile 210. In this embodiment, the cross-section of the second heavy-duty return friction strip 240 is square. It should be noted that the first cable assembly 100 and the second cable assembly 200 have similar structures, but their return cavity sizes differ to accommodate chains of different speeds. Taking the two chains used in this invention as examples, the 2.5x speed first chain 300 has a larger chain center pulley, resulting in a larger return cavity 115 for accommodating the return of the first chain 300. Conversely, the single-speed second chain 400 has a smaller chain center pulley, resulting in a smaller return cavity 215 for accommodating the return of the second chain. When switching chains, the cable profile needs to be switched accordingly.

[0060] See Figure 9 , Figure 10 and Figure 11The active module 500 includes a drive housing 700, a first active component 510, and a second active component 520; the driven module 600 includes a drive housing 700, a first driven component 610, and a second driven component 620; the drive housing 700 has a first slot 724.

[0061] The conveyor has a first assembly state and a second assembly state.

[0062] See also Figure 12 and Figure 13 As shown, the first assembly state includes the first chain 300 passing through the first slot 724 of the drive housing 700 of the driven module and engaging with the first driven assembly 610, with the second plug 130 accommodated inside the first slots 724 on both sides. Similarly, as Figure 9 As shown, on the drive end side, the first assembly state also includes the first chain 300 passing through the first slot 724 of the drive housing 700 of the active module and cooperating with the first active component 510, and the first plug 120 being accommodated inside the first slot 724 on both sides.

[0063] See also Figure 14 and Figure 15 As shown, the second assembly state includes the second chain 400 passing through the first slot 724 of the drive housing 700 of the driven module and engaging with the second driven assembly 620, with the fourth plug 230 accommodated inside the first slots 724 on both sides. Similarly, as Figure 10 As shown, on the drive end side, the second assembly state also includes the second chain 400 passing through the first slot 724 of the drive housing 700 of the active module and cooperating with the second active component 520, with the third plug 220 accommodated inside the first slots 724 on both sides. It should be noted that, due to the different sizes of the chain center wheels of the single-speed chain and the 2.5-speed chain, the heights of the first heavy-duty return friction strip 140 and the second heavy-duty return friction strip 240 that contact them are also different. The first heavy-duty return friction strip 140 is positioned higher, and the corresponding heights of the plugs used for limiting are also different.

[0064] The drive housing 700 of the aforementioned switchable chain conveyor has a first slot 724. The position and size of the first slot 724 are universal, accommodating not only two different chain specifications but also plugs at different heights installed at the ends of the line profile in both assembly states. In other words, the universal height setting of the first slot 724 is suitable for both single-number and multi-number chains. When changing the chain, the wheels on each axle in the internal cavity of the profile and drive housing 700 are replaced accordingly, but the drive housing 700 itself can use the same structure. This achieves unified stocking of the drive housing 700, eliminating the need to stock separate drive housings for different chain types, further reducing stocking difficulty and cost.

[0065] In one embodiment, the first chain 300 is a 2.5x speed chain; the second chain 400 is a single speed chain.

[0066] See Figure 13 and Figure 14 In this embodiment, the first chain 300 is a BS25-C212A double-speed chain; the second chain 400 is a 12BS double-speed chain.

[0067] See Figure 11 Preferably, in one embodiment, the drive housing 700 includes a drive inner housing 720, on which a first connecting end 721, a second connecting end 722 and a third connecting end 723 are provided in a triangular arrangement.

[0068] See Figure 1 , Figure 2 and Figure 9 , Figure 10 In one embodiment, the drive housing 700 of the active module 500 includes a drive end side plate 530 fixed to the drive inner housing 720, and a drive end cavity is formed between the drive inner housing 720 and the drive end side plate 530. The first active component 510 or the second active component 520 is housed in the drive end cavity. Figure 9 The image shows a first assembly state in which the first active component 510 is installed. Figure 10 The image shows the second assembly state with the second active component 520 installed.

[0069] In this embodiment, the first active component 510 includes a first return wheel 511 connected to the first connecting end 721, a drive sprocket 512 connected to the second connecting end 722, and a second return wheel 513 connected to the third connecting end 723; the first chain 300 cooperates with the first return wheel 511, the drive sprocket 512, and the second return wheel 513.

[0070] In this embodiment, the second active component 520 includes a third return wheel 521 connected to the first connecting end 721, an active sprocket 522 connected to the second connecting end 722, and a fourth return wheel 523 connected to the third connecting end 723; the second chain 400 cooperates with the third return wheel 521, the active sprocket 522, and the fourth return wheel 523.

[0071] In one embodiment, the drive housing 700 of the driven module 600 includes a drive inner housing 720 and a driven end side plate 630 fixed to the drive inner housing 720. A driven end cavity is formed between the drive inner housing 720 and the driven end side plate 630. The first driven component 610 or the second driven component 620 is accommodated in the driven end cavity.

[0072] Continue to see Figure 1 , Figure 2 and Figure 9 , Figure 10 The first driven assembly 610 includes a fifth return wheel 611 connected to the first connecting end 721 and a first driven idler wheel 612 connected to the second connecting end 722; the first chain 300 cooperates with the fifth return wheel 611 and the first driven idler wheel 612; the second driven assembly 620 includes a sixth return wheel 621 connected to the first connecting end 721 and a second driven idler wheel 622 connected to the second connecting end 722; the second chain 400 cooperates with the sixth return wheel 621 and the second driven idler wheel 622. The drive housing 700 of the aforementioned switchable chain conveyor includes a drive inner housing 720, on which a first connecting end 721, a second connecting end 722, and a third connecting end 723 are arranged in a triangular pattern, i.e., a three-point fixing structure, which can be simultaneously applied to the assembly on both the drive end side and the driven end side. Specifically, when the drive housing 700 is assembled on the driven side, the first connecting end 721 and the second connecting end 722 are respectively equipped with corresponding sprockets and driven components; when the drive housing 700 is assembled on the drive side, the first connecting end 721, the second connecting end 722, and the third connecting end 723 are all equipped with corresponding sprockets and driving components. This configuration further improves the versatility of the drive housing 700, eliminating the need for separate stocking when replacing the chain, and also eliminating the need for separate stocking on both the drive and driven sides, further reducing the difficulty of stocking.

[0073] Specifically, see Figure 1 , Figure 2 , Figure 13 and Figure 14 In one embodiment, the driving inner shell 720 is assembled with the corresponding side plate to form a cavity. The bottom 725, outer side wall 726, and back plate 727 of the driving inner shell 720 are all closed structures, while the upper part 728, inner side wall 729, and front are open and hollow structures. The side of the driving inner shell 720 that connects with the linear profile is the inner side wall 729, and the opposite end is the outer side wall 726. The inner side wall 729 is also provided with a horizontal extension platform 7291 protruding towards the linear profile. The end of the linear profile is mounted on the horizontal extension platform 7291 of the driving inner shell 720. The linear profile is either a first profile 110 or a second profile 210. A first slot 724 is provided on the inner side wall 729 at the same height as the horizontal extension platform 7291, and the first slot 724 communicates with the internal cavity of the inner shell. The top surface of the first slot 724 is configured as a recessed groove structure.

[0074] See Figure 11 , Figure 9 and Figure 10The inner wall of the inner shell, located at the height of the horizontal extension platform 7291, also has a second slot 7292 and a third slot 7293 extending downwards. Both the second slot 7292 and the third slot 7293 communicate with the internal cavity of the inner shell. When the drive housing 700 is assembled on the drive end side, the first slot 724, the second slot 7292, and the third slot 7293 can all allow the chain to pass through.

[0075] See also Figure 18 and Figure 19 Furthermore, in one embodiment, a tensioning structure connecting portion 7294 is provided between the second slot 7292 and the third slot 7293 on the drive inner housing 720. When the drive inner housing 720 serves as the drive inner housing of the active module 500, the tensioning structure connecting portion 7294 is detachably fixed with a tensioning structure 800. The tensioning structure 800 includes a tensioning screw 810, a tensioning sleeve 820 connected to the tensioning screw 810, a tensioning wheel bracket 830 disposed on the tensioning sleeve 820, a tensioning wheel 840 mounted on the tensioning wheel bracket 830, and a tensioning spring 850 disposed between the tensioning screw 810 and the tensioning sleeve 820.

[0076] The first assembly state includes the first chain 300 passing through the second slot 7292 and engaging with the tension wheel 840, and then passing through the third slot 7293 and engaging with the first active component 510.

[0077] The second assembly state includes the second chain 400 passing through the second slot 7292 and engaging with the tensioner 840, and then passing through the third slot 7293 and engaging with the second drive component 520.

[0078] In this embodiment, the tensioning wheel 840 is a circular wheel structure.

[0079] In use, rotating the tension screw 810 drives the tension sleeve 820 to shift, which in turn moves the tension wheel bracket 830 and the tension wheel 840 on the tension wheel bracket 830 to tension the chain. In the aforementioned switchable chain conveyor, the tension wheel 840 is supported by an external tension wheel bracket 830. The difference from existing technologies is that the tension wheel 840 is a complete circle, not a semi-circle. This design aims to address the high chain tension in heavy-duty equipment, which causes severe wear on the slider. Therefore, rolling friction is used instead of sliding friction to increase service life. Simultaneously, it improves mechanical efficiency. This tensioning method has a larger bending radius, and the circular wheel design increases mechanical efficiency and reduces resistance.

[0080] See Figure 16In one embodiment, the top of the first profile 110 is provided with a detour cavity 111 for accommodating the detour of the first chain 300. Detour friction strip limiting grooves 112 are symmetrically arranged on both sides of the detour cavity 111. Each detour friction strip limiting groove 112 is equipped with a detour friction strip 113 and a plurality of fasteners 114. The plurality of fasteners 114 are spaced apart between the side surface of the detour friction strip 113 and the side surface of the detour friction strip limiting groove 112.

[0081] See Figure 17 Furthermore, in one embodiment, the top of the second profile 210 is provided with a forward cavity 211 for accommodating the forward journey of the second chain 400. The two sides of the forward cavity 211 are symmetrically provided with forward friction strip limiting grooves 212. Each forward friction strip limiting groove 212 is equipped with a forward friction strip 213 and a plurality of fasteners 214. The plurality of fasteners 214 are spaced apart between the side surface of the forward friction strip 213 and the side surface of the forward friction strip limiting groove 212.

[0082] See Figure 16 In one embodiment, the buckle 114 on the first profile 110 includes an integrated extrusion part 1141 and a positioning part 1142. The extrusion part 1141 and the positioning part 1142 form an L-shaped structure. The extrusion part 1141 is assembled between the side surface of the outgoing friction strip 113 and the groove stop edge of the outgoing friction strip limiting groove 112. By extruding the outgoing friction strip 113, the outgoing friction strip 113 is tightly fitted with the outgoing friction strip limiting groove 112. The positioning part 1142 is fastened to the upper surface of the groove stop edge of the outgoing friction strip limiting groove 112.

[0083] See Figure 17 Furthermore, in one embodiment, the buckle 214 on the second profile 210 includes an integrated extrusion part 2141 and a positioning part 2142. The extrusion part 2141 and the positioning part 2142 form an L-shaped structure. The extrusion part 2141 is assembled between the side surface of the outgoing friction strip 213 and the groove stop edge of the outgoing friction strip limiting groove 212. By extruding the outgoing friction strip 213, the outgoing friction strip 213 is tightly fitted with the outgoing friction strip limiting groove 212. The positioning part 2142 is fastened to the upper surface of the groove stop edge of the outgoing friction strip limiting groove 212.

[0084] See Figure 3 , Figure 6 , Figure 16 and Figure 17The lengths of the outgoing friction strips 113 and 213 are the same as the length of the linear profile. The fasteners 114 and 214, acting as extrusion limiting components, are shorter in length for ease of operation and are spaced out, providing a limiting and fixing effect on the outgoing friction strips 113 and 213 at regular intervals. The two outgoing friction strip limiting grooves 112 and 212 are symmetrically arranged along the center of the outgoing cavity, as are the two outgoing friction strips 113 and 213. The fasteners 114 and 214 are positioned on the side of the outgoing friction strip limiting grooves 112 and 212 furthest from the center of the outgoing cavity; that is, the two rows of fasteners 114 and 214 are positioned outside the two outgoing friction strip limiting grooves 112 and 212, away from the outgoing chain, to avoid contact between the fasteners 114 and 214 and the outgoing chain, thus preventing them from affecting the stability of the chain drive. Specifically, the fasteners 114 and 214 are made of an elastic material with deformation capabilities, allowing for rapid assembly and disassembly through compression deformation.

[0085] See Figure 16 and Figure 17 In one embodiment, the surface of the extrusion portions 1141 and 2141 that contacts the outgoing friction strips 113 and 213 is set as a plane that fits against the outgoing friction strips, and the bottom of the surface of the extrusion portions 1141 and 2141 that is away from the outgoing friction strips 113 and 213 is set as an inclined surface, so that the bottom of the extrusion portions 1141 and 2141 forms a wedge-shaped structure that is wider at the top and narrower at the bottom. In a specific setting, the fasteners 114 and 214 are made of UPE with a molecular weight of 300w or less, and the length of the fasteners ranges from 1 to 5m. The fasteners 114 and 214 can be cut into different lengths.

[0086] See Figure 20 , Figure 21 In one embodiment, the wedge-shaped structure at the bottom of the extrusion portions 1141 and 2141 is provided with opening slots 1143 and 2143, which extend through the extrusion portions 1141 and 2141 along their length. The opening slots 1143 and 2143 provide space for deformation during the installation and removal of the extrusion portions 1141 and 2141.

[0087] like Figure 22This diagram illustrates the structure of the fasteners 114 and 214 in one embodiment of the present invention. Compared to the previous embodiment, in this embodiment, the opening slots 1143 and 2143 are eliminated. The pressing portions 1141 and 2141 of the fasteners 114 and 214 are fully assembled between the side surfaces of the forward friction strips 113 and 213 and the groove edges of the forward friction strip limiting grooves 112 and 212, forming a tight fit between the forward friction strips 113 and 213 and the forward friction strip limiting grooves 112 and 212. The upper thickness of the pressing portions 1141 and 2141 is 1±0.1mm, and the thickness of the wedge-shaped structure of the pressing portions 1141 and 2141 is 1.18mm. The pressing portions 1141 and 2141 are directly assembled by the elastic pressing of the material itself. This structure of the fasteners 114 and 214 is easier to process.

[0088] Several buckle strips 114 and 214 are disposed on the side of the outgoing friction strips 113 and 213 away from the center of the outgoing cavity. The outer groove edge of the outgoing friction strip limiting groove 112 and 212 forms a first inner buckle protrusion 1121 and 2121. The first inner buckle protrusion 1121 and 2121 cooperate with the wedge structure at the bottom of the extrusion part 1141 and 2141 to restrict the upward displacement of the extrusion part 1141 and 2141.

[0089] See Figure 20 and Figure 21 In one embodiment, the bottom of the outgoing friction strip limiting grooves 112 and 212 is configured such that the horizontal surfaces 1122 and 2122 are connected to the inclined surfaces 1123 and 2123. The horizontal surfaces 1122 and 2122 are close to the center of the outgoing cavity, and the inclined surfaces 1123 and 2123 are far from the center of the outgoing cavity and slope upward. The bottom of the fasteners 114 and 214 is in contact with the inclined surfaces 1123 and 2123 at the bottom of the outgoing friction strip limiting grooves 112 and 212, and the bottom of the outgoing friction strips 113 and 213 is in contact with the bottom of the outgoing friction strip limiting grooves 112 and 212. The outgoing friction strips 113 and 213 are restricted from moving outward by the inclined surfaces 1123 and 2123 at the bottom of the outgoing friction strip limiting grooves 112 and 212.

[0090] In one embodiment, the opposing surfaces of the two outgoing friction strips 113 and 213 are inner surfaces. Positioning grooves 1131 and 2131 are provided on the inner surfaces of the outgoing friction strips 113 and 2133, extending through them along their length. Second inward-facing protrusions 1122 and 2122 are formed on the upper part of the inner groove edges of the outgoing friction strip limiting grooves 112 and 212, and these protrusions are embedded within the limiting grooves. The second inward-facing protrusions 1122 and 2122 prevent the outgoing friction strips 113 and 213 from moving upwards and disengaging from the limiting grooves 112 and 212.

[0091] The lower surfaces of the second inner buckling protrusions 1122 and 2122 are inclined surfaces, forming wedge-shaped protrusions. The lower surfaces of the second inner buckling protrusions 1122 and 2122 are contact mating surfaces with the limiting grooves 112 and 212 of the outgoing friction strip. The lower surfaces of the second inner buckling protrusions 1122 and 2122 are parallel to the inclined surfaces 1123 and 2123 at the bottom of the limiting grooves 112 and 212 of the outgoing friction strip. This ensures that both sides of the outgoing friction strips 113 and 213 can move along the same inclined angle, preventing the outgoing friction strips 113 and 213 from getting stuck in a certain position.

[0092] In one embodiment, the lower surfaces of the second inner protrusions 1122 and 2122 are inclined at 45°, and the sloped structure at the bottom of the grooves of the outgoing friction strip limiting grooves 112 and 212 is also inclined at 45°. When the outgoing friction strips 113 and 213 move along the slope, the horizontal displacement is the same as the vertical displacement. This allows for better displacement in both the horizontal and vertical directions within a relatively small movement space.

[0093] Based on the above technical solution, the assembly space of the fasteners 114 and 214 is both the compression space of the outgoing friction strips 113 and 213 and the clearance space of the outgoing friction strips 113 and 213. During fastener assembly, the fasteners 114 and 214 compress the outgoing friction strips 113 and 213, causing them to form a tight fit with the outgoing friction strip limiting grooves 112 and 212. After the fasteners 114 and 214 are disassembled, the assembly space where the fasteners 114 and 214 are located forms a clearance space for the outgoing friction strips 113 and 213. When the outgoing friction strips 113 and 213 move to their limit positions along the inclined structure at the bottom of the outgoing friction strip limiting grooves 112 and 212, the positioning parts 1142 and 2142 of the outgoing friction strips 113 and 213 completely separate from the second inner buckling protrusions 1122 and 2122. The second inner buckle protrusions 1122 and 2122 can no longer restrict the position of the outgoing friction strips 113 and 213, allowing them to be removed from above the profile. When replacing a new outgoing friction strip, insert the new outgoing friction strip 113 or 213 from the inclined side above the outgoing friction strip limiting grooves 112 and 212, push the outgoing friction strip down the inclined structure until the second inner buckle protrusions 1122 and 2122 are fully embedded in the positioning groove of the outgoing friction strip, and then insert the buckle strips 114 and 214 into the gap between the outgoing friction strips 113 and 213 and the outgoing friction strip limiting grooves 112 and 212.

[0094] Based on the above technical solution, the outgoing friction strips 113 and 213 need to connect with the friction strips on the top of the active and driven components. Therefore, the outgoing friction strips 113 and 213 do not need to be equipped with outgoing friction strip guards. Under normal conditions, the return friction strip achieves the limiting function through the housings of the active and driven components connected at both ends of the line profile. However, the outgoing and return friction strip structures of this application can be applied to conveyor line modules with different speed chains. But the diameters of the central wheels of different chains are different, resulting in different return cavity heights of different line profiles. Therefore, different profiles need to be matched with active component housings and driven component housings with appropriate slot positions to ensure that the slot position of the housing can expose the return cavity and block the return friction strip, thereby realizing the limiting function of the housing for the return friction strip. In this embodiment, the return friction strip guard head 8 is directly set on the line profile 1, avoiding the requirement for the slot accuracy of the active component housing and the driven component housing.

[0095] Both the first chain 300 and the second chain 400 are formed by sequentially connecting several spring-loaded chain links. Each chain link includes a central wheel for load and rollers on both sides of the central wheel. Two outgoing friction strips 113 and 213 support the rollers on both sides of the outgoing chain. The central wheel of the outgoing chain is suspended in the outgoing cavity 111 and 211. The return friction strip supports the central wheel of the return chain.

[0096] Based on the above technical solution, the outgoing chain needs to support the pallet above the conveyor line. Therefore, the rollers on both sides of the central wheel are supported by the outgoing friction strips 113 and 213. The bottom of the groove in the outgoing cavity is lower than the bottom of the limiting groove of the outgoing friction strip, so that the central wheel is in a suspended state to support the pallet and items. Since the return chain is unloaded, the central wheel of the return chain can directly contact and support the first heavy-duty return friction strip 140 and the second heavy-duty return friction strip 240. Only one of the first heavy-duty return friction strip 140 and the second heavy-duty return friction strip 240 needs to be installed for easy replacement. The cross-section of the first heavy-duty return friction strip 140 and the second heavy-duty return friction strip 240 is square, which facilitates disassembly and installation.

[0097] Furthermore, connecting grooves are provided on both sides of the linear profile, and the driving and driven components at both ends of the linear profile are fixed to the connecting grooves on both sides of the linear profile by bolts. The connecting grooves facilitate the determination of the assembly height position of the driving and driven components.

[0098] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0099] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0100] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0101] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

Claims

1. A conveyor with switchable chains, characterized in that: include The first line assembly includes a first profile, a first plug and a second plug respectively disposed at both ends of the first profile, and a first heavy-duty return friction strip disposed on the first profile and limited between the first plug and the second plug; The second line assembly includes a second profile, a third plug and a fourth plug respectively disposed at both ends of the second profile, and a second heavy-duty return friction strip disposed on the second profile and limited between the third plug and the fourth plug; The first chain is disposed on the first profile; The second chain is disposed on the second profile; The active module includes a drive housing, a first active component, and a second active component; The driven module includes a drive housing, a first driven component, and a second driven component; The drive housing has a first slot; The conveyor has a first assembly state and a second assembly state; The first assembly state includes the first chain passing through the first slot of the active module drive housing and cooperating with the first active component, the first chain passing through the first slot of the driven module drive housing and cooperating with the first driven component, and the first plug and the second plug being respectively accommodated inside the first slots on both sides; The second assembly state includes the second chain passing through the first slot of the active module drive housing and cooperating with the second active component, the second chain passing through the first slot of the driven module drive housing and cooperating with the second driven component, and the third plug and the fourth plug being respectively accommodated inside the first slots on both sides.

2. The switchable chain conveyor according to claim 1, characterized in that: The first chain is a 2.5x speed chain; the second chain is a single speed chain.

3. The conveyor with a switchable chain according to claim 1, characterized in that: The drive housing includes a drive inner housing, on which a first connecting end, a second connecting end, and a third connecting end are provided in a triangular arrangement.

4. A conveyor with a switchable chain according to claim 3, characterized in that: The drive housing of the active module includes a drive end side plate fixed to the drive inner housing, and a drive end cavity is formed between the drive inner housing and the drive end side plate. The first active component or the second active component is housed in the drive end cavity. The first active component includes a first return wheel connected to the first connecting end, a drive sprocket connected to the second connecting end, and a second return wheel connected to the third connecting end; the first chain cooperates with the first return wheel, the drive sprocket, and the second return wheel; The second active component includes a third return wheel connected to the first connecting end, a drive sprocket connected to the second connecting end, and a fourth return wheel connected to the third connecting end; the second chain cooperates with the third return wheel, the drive sprocket, and the fourth return wheel.

5. A conveyor with a switchable chain according to claim 3, characterized in that: The drive housing of the driven module includes a drive inner housing and a driven end side plate fixed to the drive inner housing. A driven end cavity is formed between the drive inner housing and the driven end side plate. The first driven component or the second driven component is housed in the driven end cavity. The first driven component includes a fifth return wheel connected to the first connecting end and a first driven idler wheel connected to the second connecting end; the first chain cooperates with the fifth return wheel and the first driven idler wheel; The second driven component includes a sixth return wheel connected to the first connecting end and a second driven idler wheel connected to the second connecting end; the second chain cooperates with the sixth return wheel and the second driven idler wheel.

6. A conveyor with a switchable chain according to claim 1, characterized in that: The drive housing has a second slot and a third slot located below the first slot; a tensioning structure connection is provided between the second slot and the third slot on the drive housing.

7. A conveyor with a switchable chain according to claim 6, characterized in that: When serving as the drive housing of the active module, the tensioning structure connection part is detachably fixed with a tensioning structure, which includes a tensioning screw, a tensioning sleeve connected to the tensioning screw, a tensioning wheel bracket fixed to the tensioning sleeve, a tensioning wheel installed on the tensioning wheel bracket, and a tensioning spring disposed between the tensioning screw and the tensioning sleeve. The first assembly state includes the first chain passing through the second slot and engaging with the tension wheel, and then passing through the third slot and engaging with the first active component; The second assembly state includes the second chain passing through the second slot and engaging with the tension wheel, and then passing through the third slot and engaging with the second drive component.

8. A conveyor with a switchable chain according to claim 7, characterized in that: The tensioning wheel has a circular wheel structure.

9. A conveyor with a switchable chain according to any one of claims 1-8, characterized in that: The top of both the first profile and the second profile is provided with a departure cavity for accommodating the departure of the first chain or the departure of the second chain. Departure friction strip limiting grooves are symmetrically arranged on both sides of the departure cavity. Each departure friction strip limiting groove is equipped with a departure friction strip and several fasteners. The several fasteners are spaced apart between the side surface of the departure friction strip and the side surface of the departure friction strip limiting groove.

10. A conveyor with a switchable chain according to claim 9, characterized in that: The fastener includes an integrated extrusion part and a positioning part, which form an L-shaped structure. The extrusion part is assembled between the side surface of the outgoing friction strip and the groove stop of the outgoing friction strip limiting groove. By extruding the outgoing friction strip, the outgoing friction strip and the outgoing friction strip limiting groove are tightly fitted. The positioning part is fastened to the upper surface of the groove stop of the outgoing friction strip limiting groove.

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