CN109455462B

CN109455462B - Telescopic conveyor

Info

Publication number: CN109455462B
Application number: CN201811651188.0A
Authority: CN
Inventors: 钱国兵
Original assignee: Taicang Shtian Automation Equipment Co ltd
Current assignee: Taicang Shtian Automation Equipment Co ltd
Priority date: 2018-12-31
Filing date: 2018-12-31
Publication date: 2021-07-13
Anticipated expiration: 2038-12-31
Also published as: CN109455462A

Abstract

The invention discloses a telescopic conveyor which is used for stretching and conveying articles and comprises at least two sections of bodies, a chain transmission structure for driving the bodies to stretch, a first motor for driving the chain transmission structure, a chain circulation structure for conveying the articles, a second motor for driving the chain circulation structure, and a conveying chain guide rail, wherein the chain transmission structure is used for driving the bodies to stretch; the conveying chain guide rails are arranged on the machine bodies, and the chain circulating structure comprises the conveying chain guide rails and conveying chains circulating in the machine bodies. The telescopic conveyor can realize the telescopic and material conveying functions, and has the advantages of high automation degree, simple structure, stable operation, convenient maintenance and lower cost.

Description

Telescopic conveyor

Technical Field

The invention relates to the technical field of automation equipment, in particular to a telescopic conveyor.

Background

With the progress of the times and the action of the internet, online shopping also becomes the current trend, and the express delivery industry rises, but the quantity of the express deliveries is large, so that much inconvenience is brought to workers, especially, the workload is huge when the goods are loaded and unloaded, and the timeliness of logistics is influenced.

Disclosure of Invention

In view of the above, there is a need for a telescopic conveyor to solve the above technical problems.

One technical scheme of the decorative sheet of the invention is as follows:

a telescopic conveyor is used for stretching and conveying articles and comprises at least two sections of machine bodies, a chain transmission structure for driving the machine bodies to stretch, a first motor for driving the chain transmission structure, a chain circulation structure for conveying the articles, a second motor for driving the chain circulation structure and a conveying chain guide rail; the conveying chain guide rails are arranged on the machine bodies, and the chain circulating structure comprises the conveying chain guide rails and conveying chains circulating in the machine bodies.

In one embodiment, the at least two bodies include a first body, a second body and a third body, the second body is telescopic relative to the first body, and the third body is telescopic relative to the second body and the first body.

In one embodiment, the chain transmission structure comprises a first chain transmission set, a first telescopic transmission chain, a second telescopic transmission chain, a third telescopic transmission chain, a first telescopic chain tensioning wheel, a second telescopic chain tensioning wheel and a third telescopic chain tensioning wheel; the first chain transmission group, the first telescopic chain tensioning wheel and the first motor are fixed on the first machine body, the first telescopic chain surrounds the first chain transmission group and the first telescopic chain tensioning wheel, and two ends of the first telescopic chain are fixed on the second machine body; the third telescopic chain tensioning wheel is fixed on the second machine body, the second telescopic transmission chain is wound on the third telescopic chain tensioning wheel, one end of the second telescopic transmission chain is fixed on the first machine body, and the other end of the second telescopic transmission chain is fixed on the third machine body; the second telescopic chain tensioning wheel is fixed on the second machine body, the third telescopic transmission chain is wound on the second telescopic chain tensioning wheel, and one end of the third telescopic transmission chain is fixed at the other end of the first machine body and fixed on the third machine body.

In one embodiment, the chain circulation structure comprises a second chain transmission set, a plurality of conveying chain tension pulleys and a conveying chain; the first machine body, the second machine body and the third machine body are respectively provided with two conveying chain tensioning wheels; the conveying chains are circularly arranged on the second chain transmission set and the plurality of conveying chain tensioning wheels; the second motor drives the second chain transmission set to rotate forwards and backwards, and the second chain transmission set drives the conveying chain to convey back and forth.

In one embodiment, the conveying chain extends or retracts along with the extension and retraction of the second body and the third body.

In one embodiment, the telescopic conveyor further comprises a hydraulic tail plate capable of lifting and turning, and the hydraulic tail plate is assembled at the free end of the third body.

In one embodiment, the telescopic conveyor further comprises a plurality of conveying chain transition blocks, and the conveying chain transition blocks are arranged at the intersections of the first machine body, the second machine body and the third machine body; the conveying chain transition block is fixed on the first machine body and extends towards the second machine body in a bending mode, and the conveying chain transition block is fixed on the second machine body and extends towards the third machine body in a bending mode.

In one embodiment, the conveying chain transition block is bent and extended with a transition guide rail butted with the conveying chain guide rail.

In one embodiment, the telescopic conveyor further includes an elastic support module fixed to a free end of the third body, the elastic support module includes a lifting rod, a lifting pipe sleeved on the lifting rod, and a mold spring located between the lifting rod and the lifting pipe, and the lifting pipe is fixed to the third body.

In one embodiment, the elastic support module further comprises a support wheel at one end of the lifting rod.

The invention has the beneficial effects that: the telescopic conveyor can realize the telescopic and material conveying functions, and has the advantages of high automation degree, simple structure, stable operation, convenient maintenance and lower cost.

Drawings

FIG. 1 is a schematic view of an application of the telescopic conveyor of the present invention;

FIG. 2 is a schematic view of another state of the telescopic conveyor of the present invention;

FIG. 3 is a schematic view showing the application of still another state of the telescopic conveyor of the present invention;

FIG. 4 is a schematic structural view of a chain transmission structure of the telescopic conveyor of the present invention;

FIG. 5 is a schematic view showing another state of a chain transmission structure of the telescopic conveyor of the present invention;

FIG. 6 is a schematic structural view of a chain circulation structure of the telescopic conveyor of the present invention;

FIG. 7 is a schematic view showing another state of the chain circulation structure of the telescopic conveyor of the present invention;

FIG. 8 is a schematic view of the structure of FIG. 7 at another angle;

FIG. 9 is a schematic structural view of a transition block of a conveying chain of the telescopic conveyor of the present invention;

FIG. 10 is a schematic view of the structure of FIG. 9 from another angle;

FIG. 11 is a schematic view of the structure of FIG. 9 at a further angle;

fig. 12 is a partially enlarged schematic view of a transition block of a conveying chain of the telescopic conveyor of the present invention;

fig. 13 is a partially enlarged view of another angle of the transition block of the conveying chain of the telescopic conveyor of the present invention;

fig. 14 is a partially enlarged schematic view of a telescopic conveyor according to the present invention, with respect to a further angle of the transition block of the conveying chain;

FIG. 15 is a schematic view of the construction of the elastic tensioning module of the telescopic conveyor of the present invention;

FIG. 16 is a schematic view of another angle configuration of the elastic tensioning module of the telescopic conveyor of the present invention;

FIG. 17 is a schematic view of a further angle configuration of the elastic tensioning module of the telescopic conveyor of the present invention;

fig. 18 is a structural view illustrating a state of the elastic support module of the telescopic conveyor according to the present invention;

fig. 19 is a schematic view showing another state of the elastic support module of the telescopic conveyor of the present invention.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described below. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 to 3, a telescopic conveyor 1 for telescopic and conveying articles, such as couriers, materials, etc., is disclosed. The telescopic conveyor 1 is installed on a platform P having a certain height to facilitate docking with a truck K or the like. Of course, in other embodiments, the telescopic conveyor 1 may be directly installed in a place. The telescopic conveyor 1 is telescopic toward the truck K to facilitate loading and unloading of articles.

Referring to fig. 1 and 6, the telescopic conveyor 1 includes at least two sections of machine bodies 11, a chain transmission structure 12 for driving the machine bodies 11 to stretch, a first motor 13 for driving the chain transmission structure 12, a chain circulation structure 14 for conveying a heavy-duty pallet, a second motor 15 for driving the chain circulation structure 14, a conveying chain guide rail 16, a conveying chain transition block 17, an elastic tensioning module 18, an elastic support module 19, and a hydraulic tail plate 20.

Referring to fig. 3 and 4, the telescopic conveyor 1 includes a first body 111, a second body 112, and a third body 113. The second body 112 extends and contracts with respect to the first body 111, and the third body 113 extends and contracts with respect to the second body 112 and the first body 111. The chain transmission structure 12 includes a first chain transmission set 121, a first telescopic transmission chain 122, a second telescopic transmission chain 123, a third telescopic transmission chain 124, a first telescopic chain tension pulley 125, a second telescopic chain tension pulley 126, and a third telescopic transmission chain tension pulley 127. The first stretching chain tension pulley 125, the first chain transmission set 121 and the first motor 13 are fixed on the first machine body 111. The telescopic conveyor 1 for realizing the telescopic function comprises the following steps:

step one, the first telescopic transmission chain 122 is wound around the first chain transmission group 121 and the first telescopic chain tensioning wheel 125, two ends of the first telescopic transmission chain 122 are fixed on the second machine body 112, and the first motor 13 drives the first chain transmission group 121 to drive the first telescopic transmission chain 122 to move, so as to pull the second machine body 112 to move telescopically.

Step two, the third telescopic chain tensioning wheel 127 is fixed on the second machine body 112, and the second telescopic transmission chain 123 is wound on the third telescopic chain tensioning wheel 127; one end of the second telescopic transmission chain 123 is fixed at the tail of the first body 111, and the other end is fixed at the third body 113. The third tensioning wheel 127 extends along with the second body 112, and drives the second retractable transmission chain 123 to drive the third body 113 to extend.

Step three, the second telescopic chain tensioning wheel 126 is fixed on the second machine body 112, and the third telescopic transmission chain 124 surrounds the second telescopic chain tensioning wheel 126; one end of the third telescopic transmission chain 124 is fixed at the head of the first body 111, the other end is fixed at the third body 113, and the second telescopic chain tensioner 126 retracts along with the second body 112, and simultaneously drives the third telescopic transmission chain 124 to drive the third body 113 to retract.

Step four, the extension and retraction of the second body 112 and the third body 113 are performed synchronously, the first motor 13 drives the second body 112 to perform telescopic motion, and the second body 112 drives the third body 113 to perform telescopic motion, so as to perform step-by-step transmission.

The advantages are as follows:

(1) the telescopic motion of the machine body can be realized, the structure is simple, the operation is stable, and the maintenance is convenient;

(2) the first to third telescopic transmission chains are all stored in the equipment, so that the equipment is attractive in appearance and high in safety;

(3) the first to third telescopic transmission chains all adopt motors as power, so that step-by-step transmission is realized, the cost is lower, and the maintenance cost is lower;

referring to fig. 5 and 6, the chain circulation structure 14 includes a second chain transmission set 141, a first conveying chain tensioning wheel 142, a second conveying chain tensioning wheel 143, a third conveying chain tensioning wheel 144, a fourth conveying chain tensioning wheel 145, a fifth conveying chain tensioning wheel 146, a sixth conveying chain tensioning wheel 147, a conveying chain tensioning wheel 148 and a conveying chain 149. Taking fig. 6 as an example, a first conveying chain tensioner 142 and a fourth conveying chain tensioner 145 are respectively disposed at the upper left corner and the lower right side of the first body 111, a second conveying chain tensioner 143 and a fifth conveying chain tensioner 146 are respectively disposed at the right side and the left side of the third body 113, and a third conveying chain tensioner 144 and a sixth conveying chain tensioner 147 are respectively disposed at the left side and the right side of the second body 112. The conveying chain tensioning wheel 148 is arranged between the second conveying chain tensioning wheel 143 and the fifth conveying chain tensioning wheel 146 on the second machine body 112.

The conveying chain 149 is circularly arranged on the second chain transmission set 141 and each conveying chain tension wheel. Specifically, the conveying chain 149 passes through the first conveying chain tensioning wheel 142, the second conveying chain tensioning wheel 143, the fifth conveying chain tensioning wheel 146, the sixth conveying chain tensioning wheel 147, the third conveying chain tensioning wheel 144 and the fourth conveying chain tensioning wheel 145 in sequence from the second chain transmission set 141, and then returns to the second chain transmission set 141. The second motor 15 drives the second chain transmission set 141 to rotate forward and backward, the second chain transmission set 141 drives the conveying chain 149 to convey back and forth, the conveying chain 149 is used for conveying the heavy-duty pallet Z in a telescopic forward and backward manner, and the conveying chain 149 can extend out or retract along with the extension and retraction of the second body 112 and the third body 113, so that the pallet loading and unloading vehicle can be conveyed conveniently. The conveying chain 149 adopts an S-shaped circulation mode, and part of the conveying chain 149 is arranged in the machine body 11, so that the conveying chain 149 can freely stretch and contract in the conveying direction. The conveying chain 149 is isomorphic and is redirected and tensioned by a plurality of conveying chain tensioning wheels, and each conveying chain tensioning wheel is positioned in the equipment to ensure the safety. Conveying chain 149 part is stored inside organism 11, reduces the place that equipment took in the very big degree, improves the place utilization ratio. The conveying chain guide 16 is opened on the surfaces of the first body 111, the second body 112 and the third body 113, and the conveying chain 149 conveys forwards and backwards in the conveying chain guide 16 to facilitate conveying the pallet. The conveying chain guide rail 16 is preferably an ultra-high molecular weight polyethylene guide rail, and can be used for high-bearing conveying, wherein the single-pallet can reach 500kg continuous conveying, and the single-pallet can reach 800kg single conveying in a short time. The conveying chain dragging wheel 148 has supporting and guiding functions for the conveying chain 149.

The telescopic conveying function of the conveying chain 149 is divided into the following steps:

firstly, the second motor 16 drives the second chain transmission set 141 to realize forward and reverse conveying of the conveying chain 149;

step two, the conveying chain guide rail 16 supports the conveying chain 149 to realize self-service conveying of the conveying chain, so that abrasion is reduced;

step three, when the second machine body 112 and the third machine body 113 extend, the second conveying chain tensioning wheel 143 moves towards the extending direction to drive the conveying chain 149 to extend, and meanwhile, the third, fifth and sixth conveying chain tensioning wheels also move towards the extending direction, so that the process is synchronously carried out, the 'stretching' of the conveying chain 149 is realized, and the stretching conveying is realized;

step four, when the second machine body 112 and the third machine body 113 retract, the second conveying chain tensioning wheel 143 moves towards the retracting direction to drive the conveying chain 149 to retract, and meanwhile, the third, fifth and sixth conveying chain tensioning wheels also move towards the retracting direction, so that the processes are synchronously carried out, the 'stretching' of the conveying chain 149 is realized, and the stretching conveying is realized.

The advantages are as follows:

(1) the telescopic forward and backward conveying of the heavy-load pallet can be realized, the back-and-forth conveying time of the pallet is reduced, and the labor cost and the labor intensity are reduced;

(2) the conveying chain 149 adopts an S-shaped circulation mode, and part of the conveying chain is stored in the machine body 11, so that the chain can freely stretch in the conveying direction, the occupied area of equipment is reduced to a great extent, and the utilization rate of the area is improved;

(3) the conveying chain is redirected and tensioned through a conveying chain tensioning wheel and is positioned in the equipment, so that the safety is ensured;

(4) the telescopic chain guide rail is an ultrahigh molecular polyethylene guide rail, is high in bearing capacity and long in service life, and reduces the later maintenance cost.

Referring to fig. 7-12, the conveying chain transition block 17 is installed at the connection between the first body 111 and the second body 112 and at the connection between the second body 112 and the third body 113, and is mainly used for implementing chain transition with high and low fall and eliminating the problem of chain conveying caused by the height difference of the chain.

The conveying chain transition block 17 is generally shaped like an airplane, and includes a base portion 171, a transition portion 172 bent and extended from one end of the base portion 171, wing portions 173 on both sides of the base portion 171, and transition rails 174 connecting the base portion 171 and the transition portion 172. The conveying chain transition block 17 is mounted on the first body 111 through both side wing portions 173, the transition guide rail 174 is butted against the conveying chain guide rail 16 on the first body 111, and the transition portion 172 is bent toward the second body 112. The transition rail 174 includes three grooves 1741, a rib 1742 between the grooves 1741, and two side edges 1743. The bending angle of the rib portion 1742 is greater than that of the edge portion 1743, that is, the rib portion 1742 extends into and is suspended in the conveying chain guide 16 of the second body 112 without interfering with the conveying chain guide 16 of the second body 112, and the suspended rib portion 1742 is formed as an entrance. The conveyor chain transition block 17 is also mounted to the second body 112 and extends to the third body 113.

The function of the conveying chain transition block 17 is divided into the following steps:

firstly, fixedly installing the device at a high-low drop inlet through screws;

adjusting the position of a conveying chain transition block 17 in the lower guide rail to be internally tangent without interference on the lower guide rail;

step three, the conveying chain is installed in place, the left and right positions of the transition block of the conveying chain are adjusted, and the conveying chain is ensured to be positioned in the center of the transition block of the conveying chain;

and step four, the operation of the conveying chain is observed, and the operation condition of the conveying chain is adjusted to a proper position again.

The advantages are as follows:

(1) the conveying chain transition block can realize chain transition caused by height drop, and eliminate the chain conveying problem caused by the height of a chain guide rail;

(2) the whole conveying chain transition block is machined by a machining center and is formed in one step, the size is accurate, the surface is smooth, and the chain abrasion is reduced;

(3) the screw is directly fixed on the equipment, so that the deformation caused by welding is reduced, and the welding is convenient and quick;

(4) the transition block is high in bearing capacity and can bear 500kg of load;

(5) the transition block entrance is positioned in the lower guide rail, and if the chain extends and sinks, the situation that the chain is blocked by the main transition block can be avoided, and the stable operation of the equipment is ensured.

Referring to fig. 13 and 14, each of the chain tensioners is an independent elastic tensioning module 18. The elastic tensioning module 18 includes a sprocket 181, a slider 182, a shaft 183, a die spring 184, a tie bar 185, and a tie bar securing block 186. The two ends of the shaft 183 are respectively provided with a slide block 182, a die spring 184 is sleeved on the pull rod 185, and a pull rod fixing block 185 is arranged on the pull rod 185. The pull rod 185 and the pull rod fixing block 186 can be effectively restrained to prevent the shaft 183 from being separated from the slider 182.

The elastic tensioning module 18 is mainly used for independent tensioning of chains of a multi-chain conveyor system. Every chain all can extend, and the extension length of every chain all can differ, and every chain of this elasticity tensioning module automatic tensioning alone guarantees the stability of equipment operation. Automatic tensioning is performed by the action of the die spring.

The implementation of the independent tensioning function of the elastic tensioning module 18 is divided into the following steps:

firstly, each elastic tensioning module 18 is independently arranged on the machine body 11;

step two, before the conveying chain 149 is installed, the pull rod 185 of each elastic tensioning module is locked, and the shaft 183 and the chain wheel 181 are fixed at the shortest tensioning position;

step three, mounting a conveying chain to enable the conveying chain to be tensioned to the tightest, and mounting a chain joint to form a ring;

and step four, the pull rod 185 is loosened to the loosest position, and the chain wheel is automatically tensioned under the action of the die spring 184, so that the conveying chain is tensioned.

The advantages of the elastic tensioning module 18 are as follows:

(1) the structure is simple, the cost is simple, the operation is stable, and the maintenance is convenient;

(2) the elastic tensioning modules work independently and perform complementary interference, each chain can be tensioned independently and automatically, and the running stability of the equipment is ensured;

(3) the die has high spring bearing capacity and long service life, and fully ensures the reliability of tensioning;

(4) the pull rod and the pull rod fixing block can be effectively regulated, so that the shaft is prevented from being separated from the sliding block;

(5) the module is equipped with the pull rod fixing function, can fix this module in the position that the tensioning is the shortest, provides convenience for the installation to carry the chain.

Referring to fig. 1, 15 to 16, the elastic support module 19 is disposed at the free end of the third body 113, and is mainly used for supporting the third body 113 to prevent the device from being damaged due to too large deformation of the device. When the third body 113 extends out, the third body 113 easily sinks and deforms under the influence of its own weight, the elastic support module 19 can be fixed on the third body 113 to support the third body 113, and if the support surface has a slope, the elastic support module 19 can lift up and down, so that the horizontal state of the equipment is ensured to a great extent; the stability of the telescopic conveyor 1 is ensured.

Specifically, the elastic support module 19 includes a support wheel 191, a lifting rod 192 having one end fixed to the support wheel 191, a lifting tube 193 sleeved outside the lifting rod 192, a mold spring 194 sleeved on the lifting rod 192 and located in the lifting tube 193, a stopper 195 fixed to the other end of the lifting rod 192, and a fixing plate 196 fixed to the lifting tube 193.

The elastic support module 19 can realize the elastic support function by the following steps:

firstly, the lifting pipe 193 is fixed at the free end of the third machine body 113;

step two, the supporting wheel 191 is fixed on the lifting rod 192 to realize the lifting function and the moving function;

step three, the lifting rod 192 and the die spring 194 are fixed in the lifting pipe body 193 through the fixing plate 196 to form a whole;

step four, when the third body 113 extends, the supporting wheel 191 is supported on the support to move, so that the third body 113 is prevented from extending and deforming;

and step five, if the supporting surface has a slope, the elastic supporting module 19 can be lifted up and down under the action of the die spring 194, so that the horizontal state of the equipment is ensured to the maximum extent.

The advantages are as follows:

(1) the structure is simple, the cost is lower, the operation is stable, and the maintenance is convenient;

(2) the support invariance caused by the gradient problem of the support surface can be effectively avoided, and the horizontal state is ensured to a great extent;

(3) the supporting wheel 191 adopts a slotted fixing mode, so that later maintenance is facilitated and the operation is very convenient;

(4) the die spring 194 has high bearing capacity and long service life, and the reliability of the support is fully ensured;

(5) the supporting parts are fixed in the lifting pipe body 193 through the fixing plate 196, and the installation and maintenance are convenient.

Referring to fig. 17-19, the hydraulic tail plate 20 is assembled at the free end of the third body 113, and the hydraulic tail plate 20 is a hydraulic tail plate for an automobile, so as to achieve the lifting and turning functions.

The telescopic conveyor 1 realizes the pallet telescopic conveying and lifting functions and comprises the following steps:

step one, in an initial state, the second machine body 112 and the third machine body 113 retract to the bottom, and the hydraulic tail plate 20 rises to the highest position;

step two, when loading, the hydraulic tail plate 20 is turned down to be horizontal, the pallet is conveyed to the hydraulic tail plate through the conveying chain through telescopic motion, the hydraulic tail plate is lowered to the height of the carriage, and a person starts to operate to carry the objects on the pallet for loading;

step three, when unloading, the hydraulic tail board 20 is lowered to the height of the bottom board of the carriage to prevent the pallet from being empty, personnel start to carry objects and place the objects on the pallet, and after loading of the pallet is completed, the hydraulic tail board 20 is raised to the same horizontal height as the third machine body 113 to start to reversely run and unload the objects;

and step four, after the loading and unloading are finished, the third machine body 113 and the second machine body 112 retract to the initial positions, and the hydraulic tail plate turns upwards.

The advantages are as follows:

(1) the hydraulic tail plate can be lowered to the bottom of the carriage, so that operators can be prevented from carrying objects from a high place to load and unload the pallet, and the labor intensity is reduced;

(2) the conveying chain adopts an S-shaped circulating structure, and part of the chain is stored in the equipment and extends out and retracts along with the expansion of the equipment, so that the occupied site is reduced, and the conveying chain is safe and reliable;

(3) the telescopic transmission chain is positioned in the equipment, the motor is adopted to drive the equipment to stretch, the power is transmitted step by step, the cost is low, and the safety and the reliability are realized;

(4) the lifting mechanism purchases the hydraulic tail plate for the automobile, effectively combines the lifting function of the hydraulic tail plate with the telescopic function of equipment, and greatly improves the convenience of personnel operation;

(5) the equipment is provided with the elastic support module, so that the problem of equipment deformation caused by equipment heavy load can be effectively solved;

(6) the hydraulic tail plate can be turned upwards in the initial state of the equipment, so that the occupied site is reduced, and a manual channel is reserved;

(7) the equipment bears 500kg of pallets in a rated mode, the equipment is not available in the market at present, and the equipment is suitable for the industry of large logistics, so that the labor cost is greatly reduced.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail. In the above description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Moreover, the technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A telescopic conveyor is used for stretching and conveying articles and is characterized by comprising at least two sections of machine bodies, a chain transmission structure for driving the machine bodies to stretch, a first motor for driving the chain transmission structure, a chain circulation structure for conveying the articles, a second motor for driving the chain circulation structure and a conveying chain guide rail; the conveying chain guide rails are arranged on the machine bodies, and the chain circulating structure comprises conveying chains circulating in the conveying chain guide rails and the machine bodies; the at least two bodies comprise a first body, a second body and a third body, the second body stretches relative to the first body, and the third body stretches relative to the second body and the first body; the chain transmission structure comprises a first chain transmission set, a first telescopic transmission chain, a second telescopic transmission chain, a third telescopic transmission chain, a first telescopic chain tensioning wheel, a second telescopic chain tensioning wheel and a third telescopic chain tensioning wheel; the first chain transmission set, the first telescopic chain tensioning wheel and the first motor are fixed on the first machine body, the first telescopic transmission chain is wound around the first chain transmission set and the first telescopic chain tensioning wheel, and two ends of the first telescopic transmission chain are fixed on the second machine body; the third telescopic chain tensioning wheel is fixed on the second machine body, the second telescopic transmission chain is wound on the third telescopic chain tensioning wheel, one end of the second telescopic transmission chain is fixed on the first machine body, and the other end of the second telescopic transmission chain is fixed on the third machine body; the second telescopic chain tensioning wheel is fixed on a second machine body, the third telescopic transmission chain is wound on the second telescopic chain tensioning wheel, one end of the third telescopic transmission chain is fixed at the other end of the first machine body and is fixed on the third machine body, the telescopic conveyor further comprises a plurality of conveying chain transition blocks, and the conveying chain transition blocks are arranged at the junctions of the first machine body and the second machine body and the junctions of the second machine body and the third machine body; the conveying chain transition block is fixed on the first machine body and extends towards the second machine body in a bending way, and the conveying chain transition block is fixed on the second machine body and extends towards the third machine body in a bending way; the telescopic conveyor also comprises an elastic support module fixed on the third machine body, wherein the elastic support module comprises a support wheel, a lifting rod, a lifting pipe body, a mold spring, a blocking piece and a fixing plate, one end of the lifting rod is fixed on the support wheel, the lifting pipe body is sleeved outside the lifting rod, the mold spring is sleeved on the lifting rod and positioned in the lifting pipe body, the blocking piece is fixed at the other end of the lifting rod, and the fixing plate is fixed on the lifting pipe body; the angle of buckling of muscle portion is greater than the angle of buckling of portion is followed, muscle portion is from being located the upper strata the organism stretches into and the suspension is located the lower floor in the transport chain guide of organism, the muscle portion of suspension forms the entrance, transport chain transition piece include the basal portion, certainly the transition portion that basal portion one end was buckled and is extended, be located the alar part of basal portion both sides with transition guide, transition guide links up basal portion and transition portion, transport chain transition piece passes through the alar part of both sides is fixed in on the organism that is located the upper strata.

2. The telescopic conveyor according to claim 1, wherein: the chain circulating structure comprises a second chain transmission set, a plurality of conveying chain tensioning wheels and conveying chains; the first machine body, the second machine body and the third machine body are respectively provided with two conveying chain tensioning wheels; the conveying chains are circularly arranged on the second chain transmission set and the plurality of conveying chain tensioning wheels; the second motor drives the second chain transmission set to rotate forwards and backwards, and the second chain transmission set drives the conveying chain to convey back and forth.

3. The telescopic conveyor according to claim 2, wherein the conveying chain is extended or retracted as the second and third bodies are telescopic.

4. The telescopic conveyor according to claim 3, further comprising a hydraulic tail plate capable of lifting and turning, the hydraulic tail plate being assembled to a free end of the third body.