CN210824122U

CN210824122U - Circulating transportation system

Info

Publication number: CN210824122U
Application number: CN201921472713.2U
Authority: CN
Inventors: 翁端文; 褚如昶
Original assignee: INA Intelligent Technology Zhejiang Co Ltd
Current assignee: INA Intelligent Technology Zhejiang Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-06-23
Anticipated expiration: 2029-09-05

Abstract

The utility model discloses a circulation transportation system belongs to conveying equipment technical field. A circulating transportation system comprises a storage system main body, wherein the storage system main body comprises an annular track, and a bird hook is rotatably arranged on the annular track; the bird hook lifting device is characterized in that a guide rail section bar is arranged in the annular track, a plurality of lifting devices are arranged on the guide rail section bar, and the lifting devices drive the bird hook to abut against or separate from the upper surface of the annular track. The technical scheme specifically discloses a circulating transportation system. Firstly, the circulating transportation system is necessarily a closed annular track, and the design can ensure that the cutting pieces can move in the system in a circulating way all the time. In addition, a lifting device is additionally arranged, the bird hook is driven to rotate through the lifting device, and then the motion of the clothes rack is controlled, so that the rest of the carrier can be controlled, and the purpose of disordered entry and ordered exit is achieved.

Description

Circulating transportation system

Technical Field

The utility model belongs to the technical field of conveying system, refer in particular to a circulation conveying system.

Background

At present, the problem of unsmooth material circulation is often faced in a hanging system. Some cut pieces need to be temporarily stored for some reason and can be dispatched to a place as soon as they are needed. This in turn prevents complete removal of the cut piece from the hanger system, which would result in inefficient operation. There is therefore a need for a device capable of temporarily storing cut pieces, but no device is currently available that solves the above mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can temporarily save circulation storage device of cut-parts.

The purpose of the utility model is realized like this: a circulating transportation system comprises a storage system main body, wherein the storage system main body comprises an annular track, and a bird hook is rotatably arranged on the annular track; the bird hook lifting device is characterized in that a guide rail section bar is arranged in the annular track, a plurality of lifting devices are arranged on the guide rail section bar, and the lifting devices drive the bird hook to abut against or separate from the upper surface of the annular track.

Preferably, the storage system main body is connected with a storage input subsystem and a storage return subsystem through a transportation rail transfer device respectively.

Preferably, the lifting device comprises a top plate, a hinge part is formed at the advancing end of the bird hook, a lifting and pressing curved surface is formed at the lower end of the hinge part, and the lifting and pressing curved surface is jacked up by the top plate when passing through the lifting device.

Preferably, the pressure rising curved surface at least comprises a steep descending area and a slow descending area, and an abutting area matched with the top plate is arranged at the joint of the steep descending area and the slow descending area.

Preferably, a limiting groove is formed at the lower end of the slow descending region, and the limiting groove is used for pushing the carrier to advance when the lifting device is not ejected out; the bird hook at least comprises a bird hook main body and a hinged rod, wherein the hinged rod and the left end of the bird hook main body form the hinged part through hinging, and a return spring is abutted between the hinged rod and the right end of the bird hook main body.

Preferably, the annular rail is formed with a storage groove, the storage groove is fixedly provided with the lifting device, and the lifting device is located below the notch of the storage groove in a non-ejection state.

Preferably, the lifting device comprises a power source, the top plate is arranged above the power source, and an arc abutting area is formed at the upper end of the top plate.

Preferably, the transportation rail transfer device comprises a pre-transfer rail and a change-bearing rail which are sequentially arranged in the traveling direction, and reversing rails for connecting other transportation systems are further arranged on the peripheral sides of the pre-transfer rail and the change-bearing rail; the pre-transformation rail is matched with the reversing rail; the track bearing and changing device is movably arranged on one side of the pre-changing device and used for realizing the clutch between the pre-changing track and the track bearing and changing.

Preferably, the lower end part of the pre-transfer rail is rotatably provided with a swing rod, and the swing rod is matched with the reversing rail.

Preferably, a placing groove is formed at the lower end part of the transfer rail, and one end of the swing rod is arranged in the placing groove.

Preferably, a butt joint port is formed in one side of the front end of the swing rod, the shape of the butt joint port is matched with the reversing rail, and the butt joint port can wrap the butt joint end of the reversing rail when the swing rod swings to a set angle.

Preferably, the joint of the change bearing rail and the pre-change rail is respectively formed with a change bearing protrusion and a pre-change inclined plane, and the change bearing protrusion and the pre-change inclined plane are matched to enable the carrier to stably pass through.

Preferably, the deformation bearing bulge comprises a horizontal abutting part, and a splicing inclined plane is arranged on the lower side of the horizontal abutting part; the pre-variable inclined plane is matched with the splicing inclined plane.

Preferably, the lower end of the bearing and transforming bulge is provided with a push rod, the front side of the push rod is opposite to the tail part of the swing rod, and when the bearing and transforming rail is reset and is abutted against the pre-transforming rail, the push rod automatically pushes the swing rod to reset in the advancing process.

Preferably, one end of the change bearing rail is provided with a change bearing cylinder, and the change bearing cylinder is used for realizing the movement of the change bearing rail.

Preferably, one end of a swing spring is arranged on one side of the reversing rail of the pre-changing rail, and the other end of the swing spring is connected to one side of the swing rod and used for driving the swing rod to rotate towards one side of the reversing rail.

Preferably, a plurality of mounting holes with different distances from the swing spring are formed in one side of the swing rod, a limiting hook is formed at one end of the swing spring, and the limiting hook is matched with the mounting holes.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

the technical scheme specifically discloses a circulating transportation system. Firstly, the circulating transportation system is necessarily a closed annular track, and the design can ensure that the cutting pieces can move in the system in a circulating way all the time. In addition, a lifting device is additionally arranged, the bird hook is driven to rotate through the lifting device, and then the motion of the clothes rack is controlled, so that the rest of the carrier can be controlled, and the purpose of disordered entry and ordered exit is achieved.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

FIG. 4 is a schematic structural view of the lifting device;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a schematic view of the transport derailer in an inoperative condition;

FIG. 7 is an enlarged view of a portion of FIG. 6 at C;

FIG. 8 is a schematic view of the operation of the transport rail transfer apparatus during operation;

fig. 9 is a partial enlarged view at D in fig. 8.

In the figure: 8-transporting a track transfer device; 9-an annular track; 10-a return spring; 22-a storage system body; 23-a storage input subsystem; 24-a storage reflow subsystem; 80-a limit hook; 81-pre-track-transfer; 82-carrying and transferring rail; 83-a reversing rail; 84-a swing rod; 85-placing grooves; 86-pair of interfaces; 87-change-bearing cylinder; 88-a swinging spring; 89-mounting holes; 90-hinged lever; 91-bird hook; 92-guide rail section bar; 93-a top plate; 94-steep drop zone; 95-slow descending area; 96-a limiting groove; 97-a storage groove; 98-arc-shaped abutting areas; 99-a bird hook body; 811-pre-tapered ramp; 821-bearing deformation bulge; 822-a horizontal abutment; 823-splicing the inclined plane; 824-push rod.

Detailed Description

The invention will be further described with reference to specific embodiments.

The first embodiment is as follows: as shown in fig. 1-9, a circulating transportation system comprises a storage system main body 22, wherein the storage system main body 22 comprises an annular track 9, and a bird hook 91 is rotatably arranged on the annular track 9; a guide rail section bar 92 is arranged in the annular track 9, a plurality of lifting devices are arranged on the guide rail section bar 92, and the lifting devices drive the bird hooks 91 to abut against or separate from the upper surface of the annular track 9.

The technical scheme specifically discloses a structural form of a circulating transportation system. In particular to a system structure capable of randomly controlling the motion of a carrier. The carrier in the technical scheme is an appliance for bearing cut pieces in a clothes hanging system, and the carrier is in a shape similar to a clothes hanger in a common mode. Of course, the technical scheme is not only applied to a garment hanging system, but also can be applied to an intelligent unmanned supermarket.

In particular, it can be applied to a conveying system requiring the control of the movement of the carrier. The storage system main body 22 refers to a set of other necessary features for realizing transportation of a transportation system, besides the technical features possessed by the present technical solution, and includes, but is not limited to, other components such as a bracket corresponding to an electric control device corresponding to a corresponding driving device, which can be realized by those skilled in the art according to the prior art, and will not be described herein.

The circular rail 9 in the present embodiment is a rail located at the upper end of the storage system main body 22, and in the present embodiment, in order to realize the circular transportation of the carriers or cut pieces in the system, the rail is designed to be circular, so as to realize the circular transportation. Of course, the ring shape is only used to mean that the ring shape can be circularly and circularly conveyed, and is not limited to a circular shape, and can be in other closed single-line shapes, and is also a power-driven part.

The guide rail section 92 according to the present invention is a component for directly contacting with a carrier to bear the weight of the carrier in a conveying system.

The bird hook 91 of the present invention is an apparatus for hooking a carrier and pushing the carrier forward, and is named as bird hook 91 in the industry because it is shaped like a bird. The bird hook 91 is positioned at the lower end of the annular track 9 and advances by the driving force of the annular track 9, thereby realizing the advancing of the pushing carrier.

The lifting device in this technical solution is a device that can lift one end of the bird hook 91 and then disengage from the surface of the rail section 92, and then not hooking the carrier, and the carrier stays on the circular rail 9 at this time. Or when the device falls down, the device can hook the carrier and continue to drive the carrier to move forward.

Therefore, the technical scheme specifically provides the equipment which can control the vehicle to advance or not move in place according to the requirement. Like this, when needing a certain cut-parts, as long as find this cut-parts let bird hook 91 fall can, when not needing this carrier, let bird hook 91 lift can. The mode is simple, flexible and convenient, and the problems in the background art can be solved. However, the technical solutions also relate to the problems of software synchronization, hook carrier identification, and the like, which belong to the prior art, and are not described herein.

Preferably, the storage system main body 22 is connected with a storage input subsystem 23 and a storage return subsystem 24 respectively through the transportation rail transfer device 8.

The technical scheme particularly discloses a mode for the storage system main body 22 to be in contact with the outside. The track of the carrier running is changed by the transportation rail-changing device 8, and meanwhile, the combination of the annular track 9, the bird hook 91, the guide rail section 92 and the lifting device is combined, so that the external carriers can enter the storage system main body 22 in an unordered manner, and any one carrier can be conveyed to the outside in an ordered manner at a set time point.

Preferably, the lifting device comprises a top plate 93, the advancing end of the bird hook 91 is formed with a hinge portion, the lower end of the hinge portion is formed with a lifting and pressing curved surface, and the lifting and pressing curved surface is jacked up by the top plate 93 when passing through the lifting device.

This technical scheme specifically discloses a elevating gear's structural style and elevating gear and bird hook 91's cooperation form. In practical use, the top plate 93 is designed to jack up the lifting and pressing curved surface of the bird hook 91 so as to drive the whole bird hook 91 to rotate under the action of the hinge portion, so that the bird hook 91 can be separated from the carrier. The hinge part in the present technical solution may be a hinge of the bird hook 91 and the annular rail 9 by a shaft hole fit manner, or a hinge of the bird hook by a cross connector.

Preferably, the pressure rising curved surface at least comprises a steep descending area 94 and a slow descending area 95, and an abutting area matched with the top plate 93 is arranged at the junction of the steep descending area 94 and the slow descending area 95.

The plan scheme specifically discloses a design scheme of a lifting and pressing curved surface. The steep dip zone 94 is preferably designed to have a relatively large arc, and can be lifted with relatively little resistance during travel to catch and propel the vehicle. The design of the slow descent region 95 is preferably in the form of a relatively small arc segment. Thus, the ejection stroke of the top plate 93 can be shortened, and the operation efficiency of the equipment can be increased.

Preferably, a limiting groove 96 is formed at the lower end of the slow descending region 95, and the limiting groove 96 is used for pushing the carrier to advance when the lifting device is not ejected out; the bird hook 91 at least comprises a bird hook main body 99 and a hinge rod 90, the hinge rod 90 and the left end of the bird hook main body 99 form the hinge joint through hinge joint, and a return spring 10 is abutted between the hinge rod 90 and the right end of the bird hook main body 99.

The technical scheme specifically discloses a shape design of the bird hook 91, and the limiting groove 96 can drive the hooking carrier to push the carrier to move forward. And the limiting groove 96 is arranged in the slow descending area 95, so that the mode is simple and effective. Meanwhile, the technical scheme also specifically illustrates the working principle of the hinge portion, the hinge rod 90 and the left end of the bird hook main body 99 form the hinge portion through hinge connection, so that the hinge rod 90 and the bird hook main body 99 can be ensured to rotate after being connected, and the reset spring 10 is abutted between the hinge rod 90 and the right end of the bird hook main body 99, so that the function of automatic reset of the bird hook 91 after being jacked up by the lifting device is explained. Preferably, the return spring 10 may be a tube spring, and then, in order to further define the position of the return spring 10, a small protrusion is formed between the hinge lever 90 and the bird hook body 99, respectively, and the position of the return spring 10 is defined by the protrusion.

Preferably, the annular rail 9 is formed with a storage groove 97, the lifting device is fixedly arranged in the storage groove 97, and the lifting device is located below the notch of the storage groove 97 in the non-ejection state.

This technical scheme specifically discloses a elevating gear's mounting structure, and elevating gear can design short and small relatively, can let like this reduce vibrations and noise. In addition, the lifting device is located below the notch of the storage compartment 97 in the non-ejected state, so that the movement of the carrier on the rail profile 92 is not affected.

Preferably, the lifting device comprises a power source, the top plate 93 is arranged above the power source, and an arc-shaped abutting area 98 is formed at the upper end of the top plate 93. The operation track of the cylinder is simple and powerful, so that the cylinder is particularly suitable for being used in the technical scheme. Moreover, the design of the arc-shaped abutting area 98 can make the process of jacking the bird hook smoother and reduce friction.

Preferably, the transportation rail transfer device 8 comprises a pre-transfer rail 81 and a take-up rail 82 which are sequentially arranged in the traveling direction, and a reversing rail 83 for connecting other transportation systems is further arranged on the peripheral sides of the pre-transfer rail 81 and the take-up rail 82; the pre-transformation rail 81 is matched with the reversing rail 83; the change-over bearing rail 82 is movably arranged on one side of the pre-change rail 81 device and is used for realizing the clutch between the pre-change rail 81 and the change-over bearing rail 82.

This technical scheme specifically discloses a transportation orbital transfer device 8's structural style. The pre-track-changing 81 according to the present invention is a track prepared to generate a track-changing operation in the traveling direction. The track 82 is a track for receiving a carrier from the pre-transfer rail 81 when the track transfer operation is not performed. That is, the pre-staging rail 81 and the carrier rail 82 are generally positioned relative to each other and the vehicle travels on both rails. The direction-changing rail 83 is a rail for connecting an external conveying rail when a rail-changing action occurs, that is, a vehicle is connected to the outside through the rail.

The difference between the rail transfer and the conventional rail transfer in the technical scheme is that the rail bearing transfer 82 is separated in a moving mode, and then the pre-transfer rail 81 and the reversing rail 83 are butted, so that the purpose of entering or exiting the circulating system main body is achieved. The operation can ensure the cyclic transportation of the carrier in the cyclic transportation process, and the orbital transfer can be rapidly carried out when the orbital transfer is needed.

Preferably, a swing link 84 is rotatably disposed at the lower end of the pre-transition rail 81, and the swing link 84 is adapted to the reversing rail 83.

This technical scheme specifically discloses a concrete structure of becoming rail 81 device in advance. According to the technical scheme, the swing rod 84 is arranged in a rotating mode, in actual use, the carrier falls from the pre-rail-changing 81 to the swing rod 84, and then the rail-changing function is achieved by means of matching between the swing rod 84 and the reversing rail 83. In addition, the carrier rail 82 is generally moved backward by a certain distance, then the swing rod 84 swings to a set angle, and then the carrier passes through the pre-transfer rail 81, the swing rod 84 and the reversing rail 83 in sequence.

Preferably, a placement groove 85 is formed at the lower end of the change rail 82, and one end of the swing rod 84 is disposed in the placement groove 85.

The technical scheme particularly discloses a design mode of the swing rod 84. Specifically, since the swing link 84 is disposed between the load rail 82 and the pre-load rail 81, a storage space for the swing link 84 can be provided by forming a placement groove 85 at the lower end of the load rail 82. Can rotate to in the standing groove 85 when not needing to become the rail and do not influence normal current, when needs become the rail directly from standing groove 85 internal roll-out can.

Preferably, an abutting port 86 is formed at one side of the front end of the swing link 84, and the shape of the abutting port 86 is matched with the direction-changing rail 83, so that when the swing link 84 swings to a set angle, the abutting port 86 can wrap the abutting port of the direction-changing rail 83.

The present invention specifically discloses a design of the structure for allowing the vehicles to flow out of the storage system body 22. The abutment 86 is designed to engage the abutment end of the direction rail 83 when the rocker 84 is pivoted to a predetermined angle. The butt end of the reversing rail 83 in this embodiment is substantially the front end of the reversing rail 83, and more specifically, is enclosed by the butt joint port 86. By the design, the carrier can smoothly and stably flow from the pre-rail 81 to the reversing rail 83 through the swing rod 84, and the stability and success rate of rail transfer are ensured.

Preferably, the junction of the change bearing rail 82 and the pre-change rail 81 is respectively formed with a change bearing protrusion 821 and a pre-change inclined surface 811, and the change bearing protrusion 821 and the pre-change inclined surface 811 are adapted to enable the carrier to smoothly pass through.

The technical scheme specifically discloses a shape design idea of a change bearing rail 82 and a pre-change rail 81, and specifically, the adaptation of the change bearing protrusion 821 and the pre-change inclined surface 811 in the technical scheme means that the change bearing protrusion 821 and the pre-change inclined surface 811 can be spliced together, and the upper end surfaces of the two combined parts are located on the same horizontal plane, so that the carrier can be smoothly transited when passing through the two parts.

Preferably, the deformation bearing protrusion 821 comprises a horizontal abutting part 822, and a splicing inclined surface 823 is arranged on the lower side of the horizontal abutting part 822; the pre-tapered ramp 811 is adapted to the splice ramp 823.

The technical scheme specifically discloses a specific combination mode of a bearing rail 82 and a pre-transformation rail 81. The combined multi-channel plug structure can ensure the connection stability of the two when in butt joint. And a plurality of inclined planes are designed, so that the butt joint can be conveniently and quickly carried out.

Preferably, a push rod 824 is disposed at a lower end of the change bearing protrusion 821, and a front side of the push rod 824 is disposed opposite to a tail portion of the swing rod 84, so that when the change bearing rail 82 is reset to abut against the pre-change rail 81, the push rod 824 automatically pushes the swing rod 84 to reset in an advancing process.

The technical scheme specifically discloses a technical scheme for driving the swing rod 84 to reset. The design can automatically push the swing rod 84 to reset during the advancing process of the push rod 824. Two effects are achieved with one movement.

Preferably, one end of the change-over bearing rail 82 is provided with a change-over bearing cylinder 87, and the change-over bearing cylinder 87 is used for realizing the movement of the change-over bearing rail 82.

The technical scheme specifically discloses a motion principle of the bearing and transforming rail 82. The use of a pneumatic cylinder to effect movement of the idler rail 82 is a preferred option.

Preferably, the pre-shift rail 81 is provided with one end of a swing spring 88 at one side of the reversing rail 83, and the other end of the swing spring 88 is connected to one side of the swing link 84 for driving the swing link 84 to rotate towards the reversing rail 83.

The technical scheme discloses a working mode for enabling the swing rod 84 to automatically swing. When the transformation bearing rail 82 moves away from the pre-transformation rail 81, the swing rod 84 automatically swings under the action of the spring; when the change-bearing rail 82 is close to the pre-change rail 81, the reset can be automatically realized under the action of the push rod 824, and a simple and effective working mode is realized under the strong driving force of the air cylinder.

Preferably, a plurality of mounting holes 89 having different distances from the swing spring 88 are formed at one side of the swing rod 84, a limit hook 80 is formed at one end of the swing spring 88, and the limit hook 80 is adapted to the mounting holes 89.

This technical scheme specifically discloses the hole site of a plurality of difference, and the spring is through hanging on different hole sites, and then can adjust dynamics and the speed that the pendulum rod 84 was automatic to be rolled out through the spring by tensile degree difference, and then can adjust according to actual conditions.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A circulating transportation system is characterized by comprising a storage system main body (22), wherein the storage system main body (22) comprises an annular track (9), and a bird hook (91) is rotatably arranged on the annular track (9); a guide rail section (92) is arranged in the annular track (9), a plurality of lifting devices are arranged on the guide rail section (92), and the lifting devices drive the bird hooks (91) to abut against or separate from the upper surface of the annular track (9).

2. The endless transport system of claim 1, wherein: the storage system main body (22) is connected with a storage input subsystem (23) and a storage return subsystem (24) through a transportation rail transfer device (8).

3. The endless transport system of claim 1, wherein: the lifting device comprises a top plate (93), a hinge part is formed at the advancing end of the bird hook (91), a lifting and pressing curved surface is formed at the lower end of the hinge part, and the lifting and pressing curved surface is jacked up by the top plate (93) when passing through the lifting device;

the pressure lifting curved surface at least comprises a steep descending area (94) and a slow descending area (95), and a butting area matched with the top plate (93) is arranged at the joint of the steep descending area (94) and the slow descending area (95);

a limiting groove (96) is formed at the lower end of the slow descending area (95), and the limiting groove (96) is used for pushing the carrier to advance when the lifting device is not ejected out; the bird hook (91) at least comprises a bird hook main body (99) and a hinge rod (90), the hinge rod (90) and the left end of the bird hook main body (99) form the hinge joint through hinge joint, and a return spring (10) is abutted between the hinge rod (90) and the right end of the bird hook main body (99).

4. The endless transport system according to claim 1 or 3, characterized in that: an object placing groove (97) is formed in the annular rail (9), the lifting device is fixedly arranged in the object placing groove (97), and the lifting device is located below a notch of the object placing groove (97) in a non-ejection state.

5. The endless transport system of claim 1, wherein: the lifting device comprises a power source, a top plate (93) is arranged above the power source, and an arc-shaped abutting area (98) is formed at the upper end part of the top plate (93).

6. The endless transport system of claim 2, wherein: the transportation rail transfer device (8) comprises a pre-transfer rail (81) and a bearing transfer rail (82) which are sequentially arranged in the advancing direction, and reversing rails (83) used for connecting other transportation systems are further arranged on the peripheral sides of the pre-transfer rail (81) and the bearing transfer rail (82); the pre-transfer rail (81) is matched with the reversing rail (83); the transformation bearing rail (82) is movably arranged on one side of the pre-transformation rail (81) device and used for realizing the clutch between the pre-transformation rail (81) and the transformation bearing rail (82).

7. The endless transport system of claim 6, wherein: and a deformation bearing protrusion (821) and a pre-deformation inclined surface (811) are respectively formed at the joint of the deformation bearing rail (82) and the pre-deformation rail (81), and the deformation bearing protrusion (821) and the pre-deformation inclined surface (811) are matched to enable a carrier to stably pass through.

8. The endless transport system of claim 7, wherein: the deformation bearing protrusion (821) comprises a horizontal abutting part (822), and a splicing inclined plane (823) is arranged on the lower side of the horizontal abutting part (822); the pre-variable inclined plane (811) is matched with the splicing inclined plane (823).

9. The endless transport system of claim 8, wherein: the lower end part of the pre-transformation rail (81) is rotatably provided with a swing rod (84), and the swing rod (84) is matched with the reversing rail (83); the lower end of the change bearing protrusion (821) is provided with a push rod (824), the front side of the push rod (824) is opposite to the tail of the swing rod (84) and used for automatically pushing the swing rod (84) to reset in the advancing process of the push rod (824) when the change bearing rail (82) resets and abuts against the pre-change rail (81).

10. The endless transport system of claim 9, wherein: a placing groove (85) is formed at the lower end part of the transformation bearing rail (82), and one end of the swing rod (84) is arranged in the placing groove (85);

an abutting joint (86) is formed at one side of the front end of the swing rod (84), the shape of the abutting joint (86) is matched with that of the reversing rail (83), and when the swing rod (84) swings to a set angle, the abutting joint (86) can wrap the abutting joint of the reversing rail (83);

one end of the change bearing rail (82) is provided with a change bearing cylinder (87), and the change bearing cylinder (87) is used for realizing the movement of the change bearing rail (82);

one end of a swing spring (88) is arranged on one side of the reversing rail (83) of the pre-changing rail (81), and the other end of the swing spring (88) is connected to one side of the swing rod (84) and used for driving the swing rod (84) to rotate towards one side of the reversing rail (83);

the utility model discloses a swing rod, including pendulum rod (84), pendulum rod (84) one side shaping have a plurality of with swing spring (88) have mounting hole (89) of different distances, swing spring (88) one end shaping has spacing hook (80), spacing hook (80) with mounting hole (89) adaptation.