Conveyor capable of switching chains

Abstract

The invention relates to the technical field of chain type conveying equipment, in particular to a conveyor capable of switching chains, and the conveyor 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 for different types of chains, and the stock-up difficulty and cost are further reduced.

Description

Technical Field

[0001] The invention relates to the technical field of chain-type conveying equipment, in particular to a conveyor with switchable chains. Background Art

[0002] In the light conveying series of the standardized pallet system, the conveying media commonly used by the conveyor are divided into belt conveying media and chain conveying media. Among them, the belt conveying media conveys smoothly and has low noise, but the relatively small conveying load; the chain conveying media has high noise, and the pallets shake when stacking, which is not stable, but the conveying load is large. Therefore, when facing a transportation scenario with a large conveying load, chain conveying media are usually selected.

[0003] Chain-type conveying media include a variety of structures and types, such as accumulating roller chains, flat-top chains, U-shaped sub-plate chains, double-speed chains, etc., among which double-speed chains include double-speed chains of different specifications, such as 2.5-speed chains and single-speed chains, etc. When designing and manufacturing conveyors, corresponding drive modules, driven modules and other accessories will be designed according to the configured chain type to meet assembly requirements. For example, due to the different diameters of the chain center wheels, corresponding notches of different positions and sizes need to be set on the side walls of the housings of the drive module and the driven module. Once the assembly is completed, if a chain of other specifications is replaced, the chain center wheel of the chain will interfere with the first notch.

[0004] However, in the actual transportation process, in some scenarios the conveying medium needs to switch between different types of speed chains. If you want to replace different types of chains, you need to completely replace the corresponding drive module, driven module and other accessories. In addition, when stocking up, you also need to stock up separately according to different types of speed chains, which will cause huge waste. Therefore, the prior art lacks a conveyor that can switch chains. Summary of the invention

[0005] In view of the defects of the prior art, the present invention provides a conveyor with switchable chains, which includes a universal drive housing, which can realize the switching of different chains without the need to separately configure housings suitable for different types of chains, thereby reducing the difficulty of stocking.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by the present invention is a conveyor with switchable chains, including a first line body component, a second line body component, a first chain, a second chain, an active module, and a driven module; the first line body component includes a first profile, a first plug and a second plug respectively arranged at two ends of the first profile, and a first heavy-load return friction strip arranged on the first profile and limited between the first plug and the second plug; the second line body component includes a second profile, a third plug and a fourth plug respectively arranged at two ends of the second profile, and a second heavy-load return friction strip arranged on the second profile and limited between the third plug and the fourth plug; the first chain is arranged on the first profile; the second chain is arranged 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 is provided with a first notch; the conveyor has a first assembly state and a second assembly state; The first assembly state includes the first chain passing through the first notch of the active module driving housing and cooperating with the first active component, the first chain passing through the first notch of the driven module driving housing and cooperating with the first driven component, and the first plug and the second plug are respectively accommodated in the inner sides of the first notches on both sides; The second assembly state includes the second chain passing through the first slot of the active module driving shell and cooperating with the second active component, the second chain passing through the first slot of the driven module driving shell and cooperating with the second driven component, and the third plug and the fourth plug are respectively accommodated in the inner sides of the first slots on both sides.

[0007] Furthermore, the first chain is a 2.5-speed chain; and the second chain is a single-speed chain.

[0008] Furthermore, the driving housing includes a driving inner housing, and the driving inner housing is provided with a first connecting end, a second connecting end and a third connecting end distributed in a triangular shape.

[0009] Further, the driving housing of the active module includes a driving end side plate fixed to the driving inner housing, a driving end inner cavity is formed between the driving inner housing and the driving end side plate, and the first active component or the second active component is accommodated in the driving end inner cavity; The first active component includes a first return wheel connected to the first connection end, a drive sprocket connected to the second connection end, and a second return wheel connected to the third connection 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 connection end, a driving sprocket connected to the second connection end, and a fourth return wheel connected to the third connection end; the second chain cooperates with the third return wheel, the driving sprocket, and the fourth return wheel.

[0010] Further, the driving housing of the driven module includes a driving inner housing and a driven end side plate fixed to the driving inner housing, a driven end inner cavity is formed between the driving inner housing and the driven end side plate, and the first driven component or the second driven component is accommodated in the driven end inner cavity; The first driven assembly includes a fifth return wheel connected to the first connection end and a first driven idler wheel connected to the second connection end; the first chain cooperates with the fifth return wheel and the first driven idler wheel; The second driven assembly includes a sixth return wheel connected to the first connection end and a second driven idle wheel connected to the second connection end; the second chain cooperates with the sixth return wheel and the second driven idle wheel.

[0011] Furthermore, the drive housing is provided with a second notch and a third notch located below the first notch; and a tensioning structure connecting portion is provided between the second notch and the third notch on the drive housing.

[0012] Further, when used as a driving housing of the active module, the tensioning structure connecting portion is detachably fixed with a tensioning structure, and the tensioning structure includes a tensioning screw, a tensioning screw sleeve connected to the tensioning screw, a tensioning wheel bracket fixed to the tensioning screw sleeve, a tensioning wheel installed on the tensioning wheel bracket, and a tensioning spring arranged between the tensioning screw and the tensioning screw sleeve; The first assembly state includes the first chain passing through the second notch to cooperate with the tensioning wheel and then passing through the third notch to cooperate with the first active component; The second assembly state includes the second chain passing through the second notch to cooperate with the tensioning wheel, and then passing through the third notch to cooperate with the second active component.

[0013] Furthermore, the tensioning wheel is a circular wheel body structure.

[0014] Furthermore, the top of the first profile and the second profile are both provided with a outward cavity for accommodating the outward movement of the first chain or the outward movement of the second chain, and outward friction bar limiting grooves are symmetrically arranged on both sides of the outward cavity, and each of the outward friction bar limiting grooves is equipped with an outward friction bar and a plurality of buckle strips, and the plurality of buckle strips are arranged at intervals between the side surface of the outward friction bar and the side surface of the outward friction bar limiting groove.

[0015] Furthermore, the buckle strip includes an integrated extrusion portion and a positioning portion, and the extrusion portion and the positioning portion form an L-shaped structure. The extrusion portion is assembled between the side surface of the outward friction strip and the groove retaining edge of the outward friction strip limiting groove. The outward friction strip is tightly fitted with the outward friction strip limiting groove by extruding the outward friction strip, and the positioning portion is buckled on the upper surface of the groove retaining edge of the outward friction strip limiting groove.

[0016] Furthermore, the first profile and the second profile are both 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 installed in the return cavity; the first plug and the second plug are respectively connected to the end faces at both ends of the first profile by bolts, and the third plug and the fourth plug are respectively connected to the end faces at both ends of the second profile by bolts.

[0017] The beneficial effects of the present invention are as follows: a universal drive housing is adopted, and a first notch is provided in the drive housing. The position and size of the first notch can not only meet the requirements of loading two chains of different specifications, but also can accommodate plugs installed at different heights at the end of the wire profile in both assembly states. When replacing the chain, although the wheels on each axle in the internal accommodating cavity of the profile and the drive housing need to be replaced accordingly, the drive housing adopts the same structure to realize the switching of the chain. The conveyor in the present invention realizes the unified stocking of the drive housing, and there is no need to stock the drive housing for different types of chains, which further reduces the difficulty and cost of stocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of a conveyor with a switchable chain in one embodiment of the present invention when it is in a first assembly state; Figure 2 It is a schematic structural diagram of a conveyor with a switchable chain in an embodiment of the present invention when it is in a second assembly state; Figure 3 It is a schematic structural diagram of a first line body component in one embodiment of the present invention; Figure 4 A bottom view of a first line body assembly in one embodiment of the present invention; Figure 5 It is a front view of a first line body component in one embodiment of the present invention; Figure 6 It is a schematic structural diagram of a second line assembly in one embodiment of the present invention; Figure 7 A bottom view of a second line assembly in one embodiment of the present invention; Figure 8 It is a front view of the second line body component in one embodiment of the present invention; Fig. 9It is a schematic diagram of the internal structure of the active module and the driven module when the conveyor with switchable chains is in a first assembly state in one embodiment of the present invention; Fig.10 It is a schematic diagram of the internal structure of the active module and the driven module when the conveyor with a switchable chain is in the second assembly state in one embodiment of the present invention; Fig.11 It is a schematic diagram of the structure of the driving inner shell in one embodiment of the present invention; Fig.12 It is a schematic diagram of the internal structure of the driven module when the conveyor with switchable chains is in a first assembly state in one embodiment of the present invention; Fig.13 for Fig.12 A schematic diagram of the structure when the fifth return wheel is hidden; Fig.14 It is a schematic diagram of the internal structure of the driven module when the conveyor with a switchable chain is in the second assembly state in one embodiment of the present invention; Fig.15 for Fig.14 A schematic diagram of the structure when the sixth return wheel is hidden; Fig.16 It is a schematic structural diagram of a first profile in one embodiment of the present invention; Fig.17 It is a schematic structural diagram of a second profile in one embodiment of the present invention; Fig.18 It is a structural schematic diagram of the active module when the conveyor with switchable chains is in a first assembly state in one embodiment of the present invention; Fig.19 It is a structural schematic diagram of the active module when the conveyor with switchable chains is in the second assembly state in one embodiment of the present invention; Fig. 20 It is a partial enlarged view of the position of the friction strip on the outward path when the conveyor with a switchable chain is in the first assembly state in one embodiment of the present invention; Fig.21 It is a partial enlarged view of the position of the friction strip on the outward path when the conveyor with a switchable chain is in the second assembly state in one embodiment of the present invention; Fig. 22 It is a schematic diagram of the structure of a buckle strip in one embodiment of the present invention; In the figure: 100, first line body assembly, 110, first profile, 111, outward stroke cavity, 112, outward stroke friction strip limiting groove, 1121, first inner buckle convex angle, 1122, second inner buckle convex angle, 113, outward stroke friction strip, 1131, positioning groove, 114, buckle strip, 1141, extrusion part, 1142, positioning part, 1143, opening groove, 115, return stroke cavity, 120, first plug, 130, second plug, 140, first heavy-load return stroke friction strip, 200, second line body assembly, 210, second profile, 211, outward stroke cavity, 212, outward stroke friction strip limiting groove, 2121, first inner buckle convex angle, 2122, second inner buckle convex angle, 213, outward stroke friction strip, 2131, positioning groove, 214, buckle strip, 2141, extrusion part, 2142, positioning part, 2143, opening groove, 215, return stroke cavity, 220, third plug, 230, fourth plug, 240, second heavy-load return stroke friction strip, 300, the first chain, 400, the second chain, 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, 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, 700, drive housing, 720, drive inner housing, 721, first connection end, 722, second connection end, 723, third connection end, 724, first notch, 725, bottom of inner housing, 726, outer side wall, 727, back plate, 728, upper part of inner housing, 729, inner side wall, 7291, horizontal extension platform, 7292, second notch, 7293, third notch, 7294, tensioning structure connection part, 800, tensioning structure, 810, tensioning screw, 820, tensioning screw sleeve, 830, tensioning wheel bracket, 840, tensioning wheel, 850, tensioning spring. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0020] See also Figure 1 and Figure 2 , shows a schematic diagram of the structure of a switchable chain conveyor in two assembly states, which includes a first line body component 100, a second line body component 200, a first chain 300, a second chain 400, an active module and a passive module. Figure 1 As shown, when in the first assembly state, the first line assembly 100, the first chain 300, the active module and the passive module are assembled into a whole to form a conveyor of the first type; Figure 2 As shown, when in the first assembly state, the second line assembly 200, the second chain 400, the active module and the passive module are assembled into a whole to form a second type of conveyor.

[0021] See also 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-load return friction strip 140 disposed on the first profile 110 and limited between the first plug 120 and the second plug 130, and a first chain 300 disposed on the first profile 110. When specifically configured, Figure 5 As shown, in one embodiment, the first profile 110 is provided with a return cavity 115 for accommodating the return of the first chain 300, and the first chain 300 is assembled in the return cavity 115; the first plug 120 and the second plug 130 are respectively connected to the end faces of the two ends of the first profile 110 by bolts. The first plug 120 and the second plug 130 installed at both ends respectively block the first heavy-load return friction strip 140 from both sides to limit the relative position of the first heavy-load return friction strip 140 and the first profile 110. During the transmission process of the first chain 300, the return of the first chain 300 is in friction contact with the first heavy-load return friction strip 140. The length of the first heavy-load return friction strip 140 is the same as that of the first profile 110. In this embodiment, the cross-section of the first heavy-load return friction strip 140 is square.

[0022] Similarly, see Figure 6 , Figure 7 and Figure 8The 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-load return friction strip 240 disposed on the second profile 210 and limited between the third plug 220 and the fourth plug 230, and a second chain 400 disposed on the second profile 210. When specifically configured, as Figure 8 As shown, in one embodiment, the second profile 210 is provided with a return cavity 215 for accommodating the return of the second chain, and the second chain 400 is assembled in the return cavity 215; the third plug 220 and the fourth plug 230 are respectively connected to the end faces of the two ends of the second profile 210 by bolts. The third plug 220 and the fourth plug 230 installed at both ends respectively block the second heavy-load return friction strip 240 from both sides to limit the relative position of the second heavy-load return friction strip 240 and the second profile 210. During the transmission process of the second chain 400, the return of the second chain 400 is in friction contact with the second heavy-load return friction strip 240. The length of the second heavy-load return friction strip 240 is the same as that of the second profile 210. In this embodiment, the cross-section of the second heavy-load return friction strip 240 is square.

[0023] It should be noted that the first line body assembly 100 and the second line body assembly 200 have similar structures, but in order to adapt to chains of different speeds, the space size of the return cavity is different. Taking the two chains used in the present invention as an example, the chain center wheel size of the first chain 300 with a speed of 2.5 is larger, and the corresponding space of the return cavity 115 for accommodating the return of the first chain 300 is larger, and the chain center wheel size of the second chain 400 with a single speed is smaller, and the space of the return cavity 215 for accommodating the return of the second chain is smaller. When switching the chain, it is necessary to switch the line body profile accordingly.

[0024] See also Fig. 9 , Fig.10 and Fig.11 The active module 500 includes a driving housing 700 , a first active component 510 and a second active component 520 ; the passive module 600 includes a driving housing 700 , a first passive component 610 and a second passive component 620 ; the driving housing 700 is provided with a first notch 724 .

[0025] The conveyor has a first assembled state and a second assembled state.

[0026] See also Fig.12 and Fig.13 As shown, the first assembly state includes the first chain 300 passing through the first notch 724 of the driving housing 700 of the driven module and cooperating with the first driven assembly 610, and the second plug 130 is accommodated inside the first notch 724 on both sides. Fig. 9As shown, on the driving end side, the first assembly state also includes the first chain 300 passing through the first slot 724 of the driving housing 700 of the active module and cooperating with the first active component 510, and the first plug 120 is accommodated inside the first slot 724 on both sides.

[0027] See also Fig.14 and Fig.15 As shown, the second assembly state includes the second chain 400 passing through the first notch 724 of the driving housing 700 of the driven module and cooperating with the second driven assembly 620, and the fourth plug 230 is accommodated inside the first notch 724 on both sides. Fig.10 As shown, on the driving end side, the second assembly state also includes the second chain 400 passing through the first slot 724 of the driving housing 700 of the active module and cooperating with the second active component 520, and the third plug 220 is accommodated inside the first slot 724 on both sides.

[0028] 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-load return friction bar 140 and the second heavy-load return friction bar 240 in contact with them are also different. The first heavy-load return friction bar 140 is positioned higher, and the corresponding heights of the plugs used for limiting are also different.

[0029] The drive housing 700 of the above-mentioned switchable chain conveyor is provided with a first notch 724. The position and size of the first notch 724 are universal, which can not only meet the requirements of loading two chains of different specifications, but also accommodate plugs installed at different heights at the end of the line profile in both assembly states, that is, the universal height setting of the first notch 724 is applicable to both single-number chains and multiple-number chains of chain specifications. When replacing the chain, the wheels on each axle in the internal accommodating cavity of the profile and the drive housing 700 are replaced accordingly, but the drive housing 700 can adopt the same structure, so that the unified stocking of the drive housing 700 is achieved, and there is no need to stock the drive housings for different types of chains separately, which further reduces the difficulty and cost of stocking.

[0030] In one embodiment, the first chain 300 is a 2.5-speed chain; the second chain 400 is a single-speed chain.

[0031] See also Fig.13 and Fig.14 In this embodiment, the first chain 300 is a BS25-C212A speed chain; the second chain 400 is a 12BS speed chain.

[0032] See also Fig.11Preferably, in one embodiment, the driving housing 700 includes a driving inner housing 720 , and the driving inner housing 720 is provided with a first connecting end 721 , a second connecting end 722 and a third connecting end 723 distributed in a triangular shape.

[0033] See also Figure 1 , Figure 2 and Fig. 9 , Fig.10 In one embodiment, the driving housing 700 of the active module 500 includes a driving end side plate 530 fixed to the driving inner housing 720, a driving end inner cavity is formed between the driving inner housing 720 and the driving end side plate 530, and the first active component 510 or the second active component 520 is accommodated in the driving end inner cavity; Fig. 9 FIG. 4 shows a first assembly state in which a first active component 510 is installed. Fig.10 , a second assembly state in which a second active component 520 is installed is shown.

[0034] In this embodiment, the first active component 510 includes a first return wheel 511 connected to the first connection end 721, a drive sprocket 512 connected to the second connection end 722, and a second return wheel 513 connected to the third connection end 723; the first chain 300 cooperates with the first return wheel 511, the drive sprocket 512, and the second return wheel 513.

[0035] In this embodiment, the second active component 520 includes a third return wheel 521 connected to the first connection end 721, a driving sprocket 522 connected to the second connection end 722, and a fourth return wheel 523 connected to the third connection end 723; the second chain 400 cooperates with the third return wheel 521, the driving sprocket 522, and the fourth return wheel 523.

[0036] In one embodiment, the driving housing 700 of the driven module 600 includes a driving inner housing 720 and a driven end side plate 630 fixed to the driving inner housing 720, a driven end inner cavity is formed between the driving inner housing 720 and the driven end side plate 630, and the first driven component 610 or the second driven component 620 is accommodated in the driven end inner cavity; Continue to see Figure 1 , Figure 2 and Fig. 9 , Fig.10 The first driven component 610 includes a fifth return wheel 611 connected to the first connection end 721 and a first driven idler wheel 612 connected to the second connection end 722; the first chain 300 cooperates with the fifth return wheel 611 and the first driven idler wheel 612; the second driven component 620 includes a sixth return wheel 621 connected to the first connection end 721 and a second driven idler wheel 622 connected to the second connection end 722; the second chain 400 cooperates with the sixth return wheel 621 and the second driven idler wheel 622.

[0037] The drive housing 700 of the above-mentioned switchable chain conveyor includes a drive inner housing 720, on which a first connection end 721, a second connection end 722 and a third connection end 723 are arranged in a triangular distribution, that is, a three-point fixing structure is adopted, which can be applied to the assembly of the driving end side and the driven end side at the same time. Specifically, when the drive housing 700 is assembled on the driven end side, the first connection end 721 and the second connection end 722 are respectively installed with corresponding sprockets and driven components; when the drive housing 700 is assembled on the driving end side, the first connection end 721, the second connection end 722 and the third connection end 723 are all installed with corresponding sprockets and active components. With such a configuration, the versatility of the drive housing 700 is further improved. Not only does it not need to prepare stocks separately when replacing the chain, but it is also not necessary to prepare stocks separately on the driving end side and the driven end side, which further reduces the difficulty of preparing stocks.

[0038] Specifically, see Figure 1 , Figure 2 , Fig.13 and Fig.14 In one embodiment, the driving inner shell 720 is assembled with the corresponding side plate to form a cavity. The inner shell bottom 725, outer side wall 726 and back plate 727 of the driving inner shell 720 are all closed structures, and the inner shell upper part 728, inner side wall 729 and front are open hollow structures; the side of the driving inner shell 720 connected with the wire body 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 toward the wire body profile; the end of the wire body profile is mounted on the horizontal extension platform 7291 of the driving inner shell 720. Among them, the wire body profile is the first profile 110 or the second profile 210. A first notch 724 is opened upward on the inner side wall 729 at the same height as the horizontal extension platform 7291, and the first notch 724 is connected to the internal cavity of the inner shell, and the top surface of the first notch 724 is set as a lower groove structure.

[0039] See also Fig.11 , Fig. 9 and Fig.10 The inner side wall of the inner shell at the height of the horizontal extension platform 7291 is also provided with a second notch 7292 and a third notch 7293 in the downward direction, and the second notch 7292 and the third notch 7293 are both connected to the inner cavity of the inner shell. When the drive housing 700 is assembled on the drive end side, the first notch 724, the second notch 7292 and the third notch 7293 can all allow the chain to pass in or out.

[0040] See also Fig.18 and Fig.19Further, in one embodiment, a tensioning structure connection portion 7294 is provided between the second notch 7292 and the third notch 7293 on the driving inner shell 720. When the driving inner shell 720 is used as the active module 500, the tensioning structure connection portion 7294 is detachably fixed with a tensioning structure 800, and the tensioning structure 800 includes a tensioning screw 810, a tensioning screw sleeve 820 connected to the tensioning screw 810, a tensioning wheel bracket 830 provided on the tensioning screw sleeve 820, a tensioning wheel 840 installed on the tensioning wheel bracket 830, and a tensioning spring 850 provided between the tensioning screw 810 and the tensioning screw sleeve 820.

[0041] The first assembly state includes the first chain 300 passing through the second notch 7292 to cooperate with the tensioning wheel 840 and then passing through the third notch 7293 to cooperate with the first active component 510; The second assembly state includes the second chain 400 passing through the second notch 7292 to cooperate with the tensioning wheel 840 , and then passing through the third notch 7293 to cooperate with the second active component 520 .

[0042] In the specific configuration, in this embodiment, the tensioning wheel 840 is a circular wheel structure.

[0043] When in use, the tensioning screw 810 is rotated to drive the tensioning screw sleeve 820 to move, thereby driving the tensioning wheel bracket 830 and the tensioning wheel 840 on the tensioning wheel bracket 830 to move to tension the chain.

[0044] In the above-mentioned switchable chain conveyor, the tensioning wheel 840 is supported by an external tensioning wheel bracket 830; the difference from the prior art is that the tensioning wheel 840 is a whole circle structure, not a semicircular form; the purpose of this design is that the chain tension of heavy-duty equipment is large, which causes serious wear on the slider, so rolling friction is used instead of sliding friction to increase the service life; at the same time, the mechanical efficiency is improved. The bending radius of this tensioning form is larger, and the circular wheel design is adopted, which will improve the mechanical efficiency and reduce the resistance.

[0045] See also Fig.16 In one embodiment, a forward cavity 111 for accommodating the forward movement of the first chain 300 is provided at the top of the first profile 110, and forward friction bar limiting grooves 112 are symmetrically provided on both sides of the forward cavity 111. A forward friction bar 113 and a plurality of buckle strips 114 are assembled in each forward friction bar limiting groove 112, and the plurality of buckle strips 114 are spaced apart between the side surface of the forward friction bar 113 and the side surface of the forward friction bar limiting groove 112.

[0046] See also Fig.17Furthermore, in one embodiment, a forward cavity 211 for accommodating the forward movement of the second chain 400 is provided at the top of the second profile 210, and forward friction bar limiting grooves 212 are symmetrically provided on both sides of the forward cavity 211, and each forward friction bar limiting groove 212 is equipped with a forward friction bar 213 and a plurality of buckle strips 214, and the plurality of buckle strips 214 are spaced apart between the side surface of the forward friction bar 213 and the side surface of the forward friction bar limiting groove 212.

[0047] See also Fig.16 In one embodiment, the buckle strip 114 on the first profile 110 includes an integrated extrusion portion 1141 and a positioning portion 1142, the extrusion portion 1141 and the positioning portion 1142 form an L-shaped structure, the extrusion portion 1141 is assembled between the side surface of the outward friction strip 113 and the groove retaining edge of the outward friction strip limiting groove 112, and the outward friction strip 113 is tightly matched with the outward friction strip limiting groove 112 by extruding the outward friction strip 113, and the positioning portion 1142 is buckled on the upper surface of the groove retaining edge of the outward friction strip limiting groove 112.

[0048] See also Fig.17 Furthermore, in one embodiment, the buckle strip 214 on the second profile 210 includes an integrated extrusion portion 2141 and a positioning portion 2142. The extrusion portion 2141 and the positioning portion 142 form an L-shaped structure. The extrusion portion 2141 is assembled between the side surface of the outbound friction strip 213 and the groove retaining edge of the outbound friction strip limiting groove 212. The outbound friction strip 213 is tightly fitted with the outbound friction strip limiting groove 212 by extruding the outbound friction strip 213, and the positioning portion 2142 is buckled on the upper surface of the groove retaining edge of the outbound friction strip limiting groove 212.

[0049] See also Figure 3 , Figure 6 , Fig.16 and Fig.17 The length of the outgoing friction strips 113 and 213 is the same as the length of the wire body profile. The buckle strips 114 and 214 are used as extrusion limit workpieces. They are short in length and easy to operate. They are arranged at intervals. The outgoing friction strips 113 and 213 are limited and fixed once every certain length. The two outgoing friction strip limit grooves 112 and 212 are symmetrically arranged along the center of the outgoing cavity. The two outgoing friction strips 113 and 213 are symmetrically arranged along the center of the outgoing cavity. The buckle strips 114 and 214 are arranged on the side of the outgoing friction strip limit grooves 112 and 212 away from the center of the outgoing cavity, that is, the two rows of buckle strips 114 and 214 are arranged on the outside of the two outgoing friction strip limit grooves 112 and 212, away from the outgoing chain, to avoid the buckle strips 114 and 214 from contacting the outgoing chain and affecting the stability of the chain transmission. In the specific setting, the buckle strips 114 and 214 are made of elastic material with deformation ability, which can quickly complete the assembly and disassembly process through compression deformation.

[0050] See also Fig.16 and Fig.17 In one embodiment, a side surface of the extrusion portion 1141, 2141 contacting the outgoing friction strip 113, 213 is set as a plane that fits the outgoing friction strip, and a bottom side surface of the extrusion portion 1141, 2141 away from the outgoing friction strip 113, 213 is set as an inclined surface, so that the bottom of the extrusion portion 1141, 2141 forms a wedge-shaped structure that is wide at the top and narrow at the bottom.

[0051] In specific configuration, the buckle strips 114 and 214 are made of UPE with a molecular weight of 300w or less, and the length of the buckle strips ranges from 1 to 5m. The buckle strips 114 and 214 can be cut into different lengths.

[0052] See also Fig. 20 , Fig.21 In one embodiment, an opening groove 1143, 2143 is provided on the wedge-shaped structure at the bottom of the extrusion part 1141, 2141, and the opening groove 1143, 2143 penetrates the extrusion part 1141, 2141 along the length direction of the extrusion part 1141, 2141. The opening groove 1143, 2143 provides a deformation space for the extrusion part 1141, 2141 during the installation and removal process.

[0053] like Fig. 22 , shows a schematic diagram of the structure of buckle strips 114, 214 in an embodiment of the present invention. Compared with the previous embodiment, in this embodiment, the opening grooves 1143, 2143 are eliminated, and the extrusion parts 1141, 2141 of the buckle strips 114, 214 are fully assembled between the side surfaces of the outbound friction strips 113, 213 and the groove ribs of the outbound friction strip limiting grooves 112, 212, so that the outbound friction strips 113, 213 and the outbound friction strip limiting grooves 112, 212 form a tight fit. The thickness of the upper part of the extrusion parts 1141, 2141 is 1±0.1mm, and the thickness of the wedge-shaped structure of the extrusion parts 1141, 2141 is 1.18mm. The extrusion parts 1141, 2141 are directly assembled by the elastic extrusion of the material itself. This buckle strip 114, 214 structure is easier to process.

[0054] A plurality of buckle strips 114, 214 are arranged on the side of the outward friction strips 113, 213 away from the center of the outward cavity, and the outer groove ribs of the outward friction strip limit grooves 112, 212 form first inner buckle convex angles 1121, 2121, and the first inner buckle convex angles 1121, 2121 cooperate with the wedge-shaped structure at the bottom of the extrusion part 1141, 2141 to limit the upward displacement of the extrusion part 1141, 2141.

[0055] See also Fig. 20 and Fig.21In one embodiment, the bottom of the outbound friction strip limit groove 112, 212 is set as a structure in which a horizontal plane 1122, 2122 is connected with an inclined plane 1123, 2123, the horizontal plane 1122, 2122 is close to the center of the outbound cavity, and the inclined plane 1123, 2123 is far away from the center of the outbound cavity and inclined from bottom to top; the bottom of the buckle strip 114, 214 is in contact with the inclined plane 1123, 2123 structure at the bottom of the outbound friction strip limit groove 112, 212, and the bottom of the outbound friction strip 113, 213 is in contact with the bottom of the outbound friction strip limit groove 112, 212, and the outbound friction strip 113, 213 is limited from displacing outward by the inclined plane 1123, 2123 structure at the bottom of the outbound friction strip limit groove 112, 212.

[0056] In one embodiment, the surfaces of the two outward friction strips 113 and 213 facing each other are the inner surfaces, and the inner surfaces of the outward friction strips 113 and 213 are provided with positioning grooves 1131 and 2131, which penetrate the outward friction strips 113 and 213 along the length direction of the outward friction strips; the upper part of the inner groove rib of the outward friction strip limiting groove 112 and 212 forms a second inner buckle convex angle 1122 and 2122, and the second inner buckle convex angle 1122 and 2122 is embedded in the outward friction strip limiting groove 112 and 212. The second inner buckle convex angle 1122 and 2122 prevents the outward friction strips 113 and 213 from moving upward and disengaging from the outward friction strip limiting groove 112 and 212.

[0057] The lower surface of the second inner buckle convex angle 1122, 2122 is an inclined surface, so that the second inner buckle convex angle 1122, 2122 forms a wedge-shaped convex angle, and the lower surface of the second inner buckle convex angle 1122, 2122 is the contact and matching surface with the outward friction strip limiting groove 112, 212, and the lower surface of the second inner buckle convex angle 1122, 2122 is parallel to the inclined surface 1123, 2123 structure at the bottom of the outward friction strip limiting groove 112, 212. It is ensured that both sides of the outward friction strip 113, 213 can move along the same inclined angle to prevent the outward friction strip 113, 213 from being stuck at a certain position.

[0058] In one embodiment, the lower surface of the second inwardly buckled convex angle 1122, 2122 is inclined at 45 degrees, and the inclined surface structure at the bottom of the outward friction strip limiting groove 112, 212 is inclined at 45 degrees. When the outward friction strip 113, 213 moves along the inclined surface, the horizontal displacement is the same as the vertical displacement. It can produce a better displacement effect in the horizontal and vertical directions within a smaller moving space.

[0059] Based on the above technical solution, the assembly space of the buckle strips 114, 214 is both the squeezing space of the outgoing friction strips 113, 213 and the avoidance space of the outgoing friction strips 113, 213. When the buckle strips are assembled, the buckle strips 114, 214 squeeze the outgoing friction strips 113, 213 so that the outgoing friction strips 113, 213 form a tight fit with the outgoing friction strip limit grooves 112, 212. After the buckle strips 114, 214 are disassembled, the assembly space where the buckle strips 114, 214 are located forms the avoidance space of the outgoing friction strips 113, 213. When the outgoing friction strips 113, 213 move to the limit position along the inclined surface structure at the bottom of the outgoing friction strip limit grooves 112, 212, the positioning parts 1142, 2142 of the outgoing friction strips 113, 213 are completely separated from the second inner buckle convex angles 1122, 2122. The second inner convex angle 1122, 2122 can no longer limit the position of the outgoing friction strip 113, 213, and the outgoing friction strip 113, 213 can be taken out from above the wire body profile. When replacing a new outgoing friction strip, put the new outgoing friction strip 113, 213 in from the inclined surface side above the outgoing friction strip limit groove 112, 212, push the outgoing friction strip to slide down along the inclined surface structure until the second inner convex angle 1122, 2122 is completely embedded in the positioning groove of the outgoing friction strip, and then insert the buckle strip 114, 214 into the gap between the outgoing friction strip 113, 213 and the outgoing friction strip limit groove 112, 212.

[0060] Based on the above technical solution, the outbound friction strips 113 and 213 need to be connected with the friction strips on the top of the active component and the driven component. Therefore, the outbound friction strips 113 and 213 do not need to be provided with outbound friction strip retaining edges. Under normal conditions, the return friction strip realizes the limiting function through the shells of the active component and the driven component connected at both ends of the line profile. However, the outbound friction strip and return friction strip structures of the present application can be applied to the conveying line modules of different speed chains. However, the diameters of different chain center wheels are different, resulting in different return cavity heights of different line profiles. Therefore, different profiles need to be matched with the active component shell and the driven component shell with suitable slot positions, respectively, to ensure that the slot position of the shell can expose the return cavity and block the return friction strip, so as to realize the limiting function of the shell for the return friction strip. The present embodiment directly sets the return friction strip stopper 8 on the line profile 1, avoiding the requirements for the slotting accuracy of the active component shell and the driven component shell.

[0061] The first chain 300 and the second chain 400 are both formed by connecting a number of spring-type chain links in sequence, and each chain includes a center wheel for load and rollers on both sides of the center wheel. Two outbound friction strips 113 and 213 support the rollers on both sides of the outbound chain. The center wheel of the outbound chain is suspended in the outbound cavity 111 and 211, and the return friction strip supports the center wheel of the return chain.

[0062] Based on the above technical solution, the outbound chain needs to carry the pallet above the conveyor line, so the rollers on both sides of the center wheel are supported by the outbound friction bars 113 and 213. The bottom of the outbound cavity is lower than the bottom of the limit groove of the outbound friction bar, so that the center wheel is suspended to carry the pallet and items. Since the return chain is unloaded, the center wheel of the return chain can directly contact and support the first heavy-load return friction bar 140 and the second heavy-load return friction bar 240. Only one of the first heavy-load return friction bar 140 and the second heavy-load return friction bar 240 is required, which is easy to replace. The cross-section of the first heavy-load return friction bar 140 and the second heavy-load return friction bar 240 is square, which is convenient for disassembly and installation.

[0063] Furthermore, connecting grooves are provided on both sides of the wire body profile, and the active components and the driven components at both ends of the wire body profile are fixed to the connecting grooves on both sides of the wire body profile by bolts. The connecting grooves can easily define the height position of the assembly of the active component and the driven component.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0065] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0066] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0067] In the present invention, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in 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 may be directly on the other element or there may be a central element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

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 two ends of the first profile, and a first heavy-load 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 two ends of the second profile, and a second heavy-load return friction strip disposed on the second profile and limited between the third plug and the fourth plug; A first chain, arranged on the first profile; a second chain, arranged on the second profile; An active module, comprising a driving housing, a first active component and a second active component; The driven module comprises a driving housing, a first driven component and a second driven component; The driving housing is provided with a first notch; The conveyor has a first assembly state and a second assembly state; The first assembly state includes the first chain passing through the first notch of the active module driving housing and cooperating with the first active component, the first chain passing through the first notch of the driven module driving housing and cooperating with the first driven component, and the first plug and the second plug are respectively accommodated in the inner sides of the first notches on both sides; The second assembly state includes the second chain passing through the first slot of the active module driving shell and cooperating with the second active component, the second chain passing through the first slot of the driven module driving shell and cooperating with the second driven component, and the third plug and the fourth plug are respectively accommodated in the inner sides of the first slots on both sides.

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

3. The switchable chain conveyor according to claim 1, characterized in that: The driving housing comprises a driving inner housing, and a first connecting end, a second connecting end and a third connecting end which are distributed in a triangular shape are provided on the driving inner housing.

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

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

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

7. The switchable chain conveyor according to claim 6, characterized in that: When used as the driving housing of the active module, the tensioning structure connecting portion is detachably fixed with a tensioning structure, and the tensioning structure includes a tensioning screw, a tensioning screw sleeve connected to the tensioning screw, a tensioning wheel bracket fixed to the tensioning screw sleeve, a tensioning wheel installed on the tensioning wheel bracket, and a tensioning spring arranged between the tensioning screw and the tensioning screw sleeve; The first assembly state includes the first chain passing through the second notch to cooperate with the tensioning wheel and then passing through the third notch to cooperate with the first active component; The second assembly state includes the second chain passing through the second notch to cooperate with the tensioning wheel, and then passing through the third notch to cooperate with the second active component.

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

9. The switchable chain conveyor according to any one of claims 1 to 8, characterized in that: The top of the first profile and the second profile are both provided with an outward cavity for accommodating the outward movement of the first chain or the outward movement of the second chain, and outward friction bar limiting grooves are symmetrically arranged on both sides of the outward cavity, and each of the outward friction bar limiting grooves is equipped with an outward friction bar and a plurality of buckle strips, and the plurality of buckle strips are arranged at intervals between the side surface of the outward friction bar and the side surface of the outward friction bar limiting groove.

10. The switchable chain conveyor according to claim 9, characterized in that: The buckle strip includes an integrated extrusion portion and a positioning portion, and the extrusion portion and the positioning portion form an L-shaped structure. The extrusion portion is assembled between the side surface of the outward friction strip and the groove retaining edge of the outward friction strip limiting groove. The outward friction strip is tightly fitted with the outward friction strip limiting groove by extruding the outward friction strip, and the positioning portion is buckled on the upper surface of the groove retaining edge of the outward friction strip limiting groove.

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