CN214999342U - Gear shifting device and transportation equipment comprising same - Google Patents

Abstract

The utility model discloses a gear shifting device and transportation equipment composed of the same, wherein the gear shifting device comprises a shell, a gear component, a gear entering module and a gear selecting module, the gear component comprises a gear, the gear entering module comprises a connecting rod and a stop rod, the stop rod is connected with the first end of the connecting rod, and the second end of the connecting rod is provided with a push rod; the gear selecting module comprises a rotating wheel and a gear selecting power mechanism, the axial direction of the rotating wheel is parallel to the axial direction of the gear, an accommodating groove is formed in the first end face of the rotating wheel, and the end portion of the push rod is slidably mounted in the accommodating groove. The gear selecting power mechanism drives the rotating wheel to rotate, the end part of the push rod slides in the accommodating groove so as to drive the connecting rod to lift, the stop rod is far away from or close to the gear, and when the stop rod is far away from the gear, the gear shifting device is in a neutral gear; when the stop lever is connected with the gear, the gear shifting device is shifted. The utility model discloses a drive runner is with the position of adjusting the connecting rod, and the stop lever can select different fender position then, and simple structure easily controls, extensively is applicable to the mechanical equipment of different volumes.

Description

Gear shifting device and transportation equipment comprising same

Technical Field

The utility model relates to a gearshift and transportation equipment of constituteing thereof in the gear shift control apparatus field.

Background

The shift mechanisms on the market are mostly controlled by operating handles at present, and the requirement on the operating level of a user is high. Taking the automatic transmission automobile gear shifting mechanism as an example, a user needs to learn the action and the use method of each gear for a long time, the gears are often easily confused, and different requirements also exist for switching between the gears, so that the gears cannot be switched at will. In addition, in such a shifting mechanism, in order to switch between different gears, a plurality of control elements, a plurality of measuring elements and a plurality of actuating mechanisms are required to act together, and the overall structure is bulky. Meanwhile, in mounting, the parts of the gear shift mechanism are various and complicated, and the weight of the gear shift mechanism is increased by the parts with large quantity, so that the gear shift mechanism is complicated in small mechanical equipment, and is not suitable for being mounted on the small mechanical equipment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a gearshift and transportation equipment of constituteing, simple structure easily controls.

According to an embodiment of a first aspect of the present invention, there is provided a gear shifting device, including a housing, an interior of which forms a cavity; the gear assemblies comprise gears which are rotatably arranged in the cavities; the gear entering module is arranged in the cavity and comprises a connecting rod and a stop rod which can be connected with the gear, the stop rod is connected to the first end of the connecting rod, and a push rod is arranged at the second end of the connecting rod; the gear selecting module is arranged in the cavity and comprises a rotating wheel and a gear selecting power mechanism, the gear selecting power mechanism is used for driving the rotating wheel to rotate, the axial direction of the rotating wheel is parallel to the axial direction of the gear, a containing groove arranged in the circumferential direction is formed in the first end face of the rotating wheel, the end portion of the push rod is slidably arranged in the containing groove, the end portion of the push rod is arranged in the sliding process of the containing groove, and the end portion of the push rod is displaced in the radial direction of the rotating wheel.

According to the utility model discloses first aspect embodiment, furtherly, the push rod includes the body of rod and head, the head is connected the tip of the body of rod is in order to form the tip of push rod, the diameter of head is less than the diameter of the body of rod, the opening width of storage tank is less than the diameter of head.

According to the utility model discloses first aspect embodiment, furtherly, the quantity that keeps off the position subassembly is three, each keep off the position subassembly and be corotation mechanism, reversal mechanism and detent mechanism respectively.

According to the utility model discloses an embodiment of the first aspect, furtherly, the storage tank includes the main part section, the both ends of main part section respectively with the contained angle that forms between the line in the runner centre of a circle is 135, the main part section includes three constitution sections, the constitution section is including the selection that connects gradually keeps off the section and the section of shifting, the tip of push rod is followed the gliding in-process of selection fender section, the tip of push rod is followed the axial direction of runner takes place the displacement, the section of shifting with increase after the distance between the runner centre of a circle reduces earlier.

According to the utility model discloses the embodiment of the first aspect, furtherly, the quantity of main part section is two, two connect through the changeover portion between the tip that the main part section is close to each other, the both ends of changeover portion respectively with the contained angle that forms between the line in the runner centre of a circle is 45.

According to the utility model discloses an embodiment of the first aspect, furtherly, gearshift still includes damping mechanism, damping mechanism includes damping piece, elastic component and fixes damping seat in the cavity, damping piece slidable mounting is in the damping seat, the damping piece is located the gear with between the second terminal surface of runner, have the edge on the second terminal surface of runner the bellying that runner circumferential direction arranged, the both ends of elastic component are connected respectively the damping piece with the damping seat, the elastic component be used for to the damping piece apply press to the effort of runner second terminal surface.

According to the utility model discloses the embodiment of the first aspect, furtherly, the both ends of bellying are 135 with the contained angle that forms between the line in the runner centre of a circle respectively, the both ends of bellying are in projection on the first terminal surface is rather than the coincidence of the both ends of one of them main part section, it is protruding to be equipped with the transition of slope on the second terminal surface, the bellied first end of transition with the one end of bellying flushes, the bellied second end of transition with the second terminal surface flushes, the bellied both ends of transition respectively with the contained angle that forms between the line in the runner centre of a circle is 45.

According to the utility model discloses the first aspect embodiment, furtherly, it still includes the guide bracket to go into the fender module, be equipped with the slot hole on the guide bracket, the length direction in slot hole parallel with the axial direction of gear, the only pole movable mounting be in the slot hole.

According to the utility model discloses first aspect embodiment, furtherly, the only pole with the connecting rod rotates to be connected, the upper portion of only pole is equipped with the ring gear of arranging along circumference, the double-phase offside along length direction in elongated hole all is equipped with interior tooth portion, the ring gear with the meshing of internal tooth portion.

According to a second aspect of the present invention, there is provided a transportation device, including the above-mentioned gear shifting device.

The utility model has the advantages that: the gear selecting power mechanism drives the rotating wheel to rotate, the end part of the push rod slides in the accommodating groove so as to drive the connecting rod to lift, the stop rod is far away from or close to the gear, and when the stop rod is far away from the gear, the gear shifting device is in a neutral gear; when the stop lever is connected with the gear, the gear shifting device is shifted. The utility model discloses a drive runner is with the position of adjusting the connecting rod, and the stop lever can select different fender position then, and simple structure easily controls, extensively is applicable to the mechanical equipment of different volumes.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures represent only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from these figures without inventive effort.

Fig. 1 is a schematic view of a gear shifting device in an embodiment of the present invention;

fig. 2 is a front view (with the housing omitted) of the gear shifting device in an embodiment of the present invention;

fig. 3 is a front sectional view (with the housing omitted) of the gear shifting device in an embodiment of the present invention;

fig. 4 is a schematic diagram of a gear entering module according to an embodiment of the present invention;

FIG. 5 is a schematic view of a first end surface of a runner in an embodiment of the present invention;

FIG. 6 is a schematic view of a second end surface of the runner in an embodiment of the present invention;

fig. 7 is a side view of a gear selection module in an embodiment of the invention;

fig. 8 is a schematic view of the cooperation between the push rod and the guide bracket in the embodiment of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 4, the embodiment of the present invention provides a gear shifting device, including shell 10, go into the fender module, select to keep off module and a plurality of fender position subassemblies, the inside vacuole formation of shell 10 goes into the fender module, selects to keep off the module and keeps off the position subassembly and all locates in the cavity. The housing 10 comprises two shells that can be spliced together to form a complete housing 10, and the housing 10 can be disassembled to facilitate maintenance or replacement of components within the cavity. The gear assembly includes a gear 20, the gear 20 being rotatably mounted in the cavity. The gear entering module comprises a connecting rod 30 and a stop rod 31 which can be connected with the gear 20, the stop rod 31 is connected to a first end of the connecting rod 30, and a push rod 32 is arranged at a second end of the connecting rod 30. The gear selecting module comprises a rotating wheel 40 and a gear selecting power mechanism 50, wherein the gear selecting power mechanism 50 is used for driving the rotating wheel 40 to rotate, the axial direction of the rotating wheel 40 is parallel to the axial direction of the gear 20, a containing groove arranged along the circumferential direction is formed in a first end surface of the rotating wheel 40, the end part of the push rod 32 is slidably installed in the containing groove, and in the process that the end part of the push rod 32 slides along the containing groove, the end part of the push rod 32 displaces in the radial direction of the push rod 32 relative to the rotating wheel 40. Alternatively, the link 30 is an L-shaped rod, a first end of which is parallel to the radial direction of the gear 20 and a second end of which is parallel to the axial direction of the gear 20. The gear selecting power mechanism 50 can be a steering engine, the steering engine drives the rotating wheel 40 to rotate through the transmission shaft 51, the transmission shaft 51 can be a cross shaft, when the rotating wheel 40 rotates, the end part of the push rod 32 is displaced in the radial direction of the rotating wheel 40 relative to the rotating wheel 40, so that the push rod 32 drives the connecting rod 30 to integrally lift, and the stop rod 31 also lifts. When the stop lever 31 is raised, the stop lever 31 moves away from the gear wheel 20 and does not come into contact with the gear wheel 20, so that the gear change device is in neutral; accordingly, when the stop lever 31 is lowered, the stop lever 31 moves close to the gear 20 and abuts against the tooth grooves, so that the shift device is in the normal gear, the reverse gear, or the stop gear. Alternatively, the transmission shaft 51 may be provided with a support 52, an outer circumference of the support 52 is used for supporting the push rod 32 and abutting against the push rod 32, and an outer circumference of the support 52 has a shape corresponding to that of an inner sidewall of the receiving groove, which is a side close to a center of the rotating wheel 40.

It can be understood that, in this embodiment, in order to make the end portion of the push rod 32 always located in the accommodating groove and not easy to be separated, the push rod 32 includes a rod body and a head portion, the head portion is connected to the end portion of the rod body to form the end portion of the push rod 32, the diameter of the head portion is smaller than that of the rod body, and the opening width of the accommodating groove is smaller than that of the head portion. The end of the push rod 32 extends into the receiving groove, and the head is not easy to be directly separated from the opening of the receiving groove because the opening width of the receiving groove is smaller than the diameter of the head. Optionally, the width of the bottom of the accommodating groove is greater than the diameter of the head, and the width of the opening of the accommodating groove is greater than the diameter of the rod body, so as to ensure that the push rod 32 can freely slide along the accommodating groove.

Optionally, the number of the gear assemblies is three, each gear assembly is a forward rotation mechanism, a reverse rotation mechanism and a stop mechanism, and the gear 20 of each gear assembly is arranged coaxially, so that when the connecting rod 30 moves along the axial direction of the gear 20, the push rod 32 can move to be opposite to the gear 20 of a different gear assembly, and the movement track is simplified. In this embodiment, the normal rotation mechanism, the reverse rotation mechanism, and the brake mechanism are arranged in this order, and the normal rotation mechanism is closest to the runner 40.

According to fig. 5 to 6, the accommodating groove includes a main body section, an included angle formed between two ends of the main body section and a connecting line of the circle center of the rotating wheel 40 is 135 °, the main body section includes three constituent sections 41, the constituent section 41 includes a gear selecting section 411 and a gear shifting section 412 which are sequentially connected, in the process that the end portion of the push rod 32 slides along the gear selecting section 411, the end portion of the push rod 32 is displaced along the axial direction of the rotating wheel 40, and the distance between the gear shifting section 412 and the circle center of the rotating wheel 40 is increased after being reduced. The included angle formed between the connecting line of the two ends of each component section 41 and the circle center of the rotating wheel 40 is a subsection included angle, the subsection included angles of the three component sections 41 are equal, and the subsection included angles are all 45 degrees. In the present application, the depth of the receiving groove refers to the distance between the top surface and the bottom surface of the opening of the receiving groove, and the depth direction is parallel to the axial direction of the rotating wheel 40. It can be understood that the bottom surface of the gear selecting section 411 is an inclined surface, and the depth of the gear selecting section 411 changes, so that the end of the push rod 32 displaces along the axial direction of the runner 40 in the process that the end of the push rod 32 slides along the gear selecting section 411; the distance between the shifting section 412 and the center of the wheel 40 is increased after being decreased, so that the end of the push rod 32 is displaced along the radial direction of the wheel 40 during the process that the end of the push rod 32 slides along the shifting section 412.

In this embodiment, when the end of the push rod 32 is located at the initial position of the first component section 41, the end of the stop rod 31 is located between the rotating wheel 40 and the gear 20 of the forward rotation mechanism, the gear shifting device is in a neutral position, after the gear selecting power mechanism 50 drives the rotating wheel 40 to rotate, the depth of the first gear selecting section 411 is gradually increased, the push rod 32 drives the connecting rod 30 to move towards the gear 20 close to the forward rotation mechanism, and when the end of the push rod 32 is located at the end position of the first gear selecting section, the circumferential sides of the stop rod 31 and the gear 20 of the forward rotation mechanism are opposite. With the continuous rotation of the wheel 40, the end of the push rod 32 enters the shift section 412, and since the distance between the shift section 412 and the center of the wheel 40 is first decreased and then increased, the push rod 32 moves toward the center of the wheel 40, and the connecting rod 30 drives the stop rod 31 to move toward the gear 20, until the end of the push rod 32 is at the minimum distance between the shift section 412 and the center of the wheel 40, at which time the stop rod 31 abuts against the gear 20, and the shifting device is in the forward gear. When the gear is to be shifted, the gear selecting power mechanism 50 continues to rotate, the end of the push rod 32 continues to slide along the gear shifting section 412, the distance between the end of the push rod 32 and the center of the circle of the rotating wheel 40 gradually increases, the connecting rod 30 drives the stop rod 31 to move in the direction away from the gear 20, until the end of the push rod 32 is at the end position of the gear shifting section 412, the end of the stop rod 31 is completely separated from the gear 20 of the forward rotation mechanism, the gear shifting device is in neutral, meanwhile, the end of the push rod 32 is also at the start position of the gear selecting section 411 in the next group of sections 41, and as the rotating wheel 40 continues to rotate, the stop rod 31 can be respectively connected with the gear 20 of the reverse rotation mechanism and the gear stop mechanism, and the process is the same.

Furthermore, the number of the main body sections is two, the mutually close end parts of the two main body sections are connected through a transition section 42, and an included angle formed between the two ends of the transition section 42 and a connecting line of the circle centers of the rotating wheels 40 is 45 degrees. The two main body segments are connected by the two transition segments 42, and the two main body segments and the two transition segments 42 form a complete ring shape together, so that the rotating wheel can rotate continuously along one direction to realize gear selection and gear shifting. In this embodiment, the two main segments are a first main segment and a second main segment, the end of the third component 41 of the first main segment is connected to the start of the first component 41 of the second main segment through the transition segment 42, and similarly, the end of the third component 41 of the second main segment is connected to the start of the first component 41 of the first main segment through the transition segment 42. The bottom surface of the transition section 42 is a slope, so that after the end of the push rod 32 enters the transition section 42 from the end of the third component section 41, the push rod 32 can move along the axial direction of the rotating wheel 40, the connecting rod 30 drives the stop rod 31 to move along the axial direction of the gear 20, and when the end of the push rod 32 enters the initial position of the first component section 41 of the other main body section, the stop rod 31 is reset to the initial position, that is, the stop rod 31 is located between the rotating wheel 40 and the gear 20 of the forward rotation mechanism.

The gear shifting device further comprises a damping mechanism, the damping mechanism comprises a damping piece 60, an elastic piece 61 and a damping seat fixed in the cavity, the damping piece 60 is slidably mounted in the damping seat, and the damping piece 60 can extend out of two ends of the damping seat. The damper 60 is located between the gear 20 and the second end surface of the wheel 40, the second end surface of the wheel 40 has the protrusions 43 arranged in the circumferential direction of the wheel 40, and the elastic member 61 has both ends connected to the damper 60 and the damper seat, respectively, the elastic member 61 serving to apply a force to the damper 60 to press the second end surface of the wheel 40. The damping member 60 is always in contact with the second end of the wheel 40, that is, the damping member 60 is always in contact with the second end surface or the convex portion 43, and along with the rotation of the wheel 40, when the convex portion 43 of the wheel 40 is in contact with the damping member 60, the damping member 60 is pushed out to be in contact with the gear 20, so that sliding friction is generated between the damping member 60 and the gear 20, thereby reducing the rotation speed of the gear 20, and the gear shifting device is in a damping position. When the end of the damping member 60 is opposite to the second end face, the elastic member 61 may drive the damping member 60 away from the gear 20 to ensure that the disengagement of the damping member 60 from the gear 20 is achieved.

Furthermore, an included angle formed between each of two ends of the protruding portion 43 and a connecting line of the center of the rotating wheel 40 is 135 °, projections of the two ends of the protruding portion 43 on the first end surface coincide with two ends of one of the main body sections, an inclined transition protrusion 44 is arranged on the second end surface, the first end of the transition protrusion 44 is flush with one end of the protruding portion 43, the second end of the transition protrusion 44 is flush with the second end surface, and an included angle formed between each of two ends of the transition protrusion 44 and the connecting line of the center of the rotating wheel 40 is 45 °. Because of the inclined transition protrusion 44, the damping member 60 can smoothly transition from abutting against the second end face to abutting against the protrusion 43, and when the damping member 60 relatively moves from the second end of the transition protrusion 44 to the first end of the transition protrusion 44, the damping member 60 gradually approaches the gear 20, and in the process, the damping member 60 slowly contacts with the gear 20; meanwhile, the transition protrusion 44 may also be used to control the frictional force between the damper 60 and the gear 20 according to the rotation angle, thereby changing the frictional torque. In addition, the projections of the two ends of the protruding portion 43 on the first end face coincide with the two ends of one of the main body sections, and the included angle formed between the two ends of the transition protrusion 44 and the connecting line of the circle center of the rotating wheel 40 is 45 °, that is, the transition protrusion 44 corresponds to the transition section 42 one by one, and the projections of the two ends of the transition protrusion 44 on the first end face coincide with the two ends of the corresponding transition section 42. In this embodiment, the push rod 32 and the damper 60 are disposed at the axial center, and the protrusion 43 is opposite to the first main body section, so that when the gear shift device is to be in the normal forward gear or the reverse gear, the end of the push rod 32 is located in the second main body section, and the damper 60 is not pushed to contact with the gear 20. When the gear change device is to be brought into a forward or reverse gear and the rotational speed is reduced, the end of the push rod 32 is located in the first body section, wherein the damping member 60 is in contact with the gear wheel 20, which reduces the rotational speed of the gear wheel 20.

In some embodiments, referring to fig. 7 to 8, the gear-in module further includes a guide bracket 34, the guide bracket 34 is provided with an elongated hole, the length direction of the elongated hole is parallel to the axial direction of the gear 20, and the stop rod 31 is movably installed in the elongated hole. The long hole limits the support rod to move only along the length direction of the long hole when the support rod moves horizontally, namely, the bottom end of the stop rod 31 is always opposite to the wheel center of the gear 20 of each gear component, and the stop rod 31 is beneficial to accurately entering into a stop. In this embodiment, the second end of the connecting rod 30 is connected with a slot member 33 for installing the stop rod 31, the slot member 33 has a slot, the stop rod 31 can slide in the slot along the axial direction of the slot, and the stop rod 31 is rotatably connected in the slot. The top end of the stop rod 31 is provided with a clamping part 312, and the cross section size of the clamping part 312 is larger than that of the clamping groove, so that the clamping groove piece 33 can drive the stop rod 31 to lift. Further, the upper portion of the stopper 31 is provided with a ring gear 311 arranged in the circumferential direction, and both opposite sides of the elongated hole in the length direction are provided with inner tooth portions 341, and the ring gear 311 is meshed with the inner tooth portions 341. When the connecting rod 30 drives the stop rod 31 to move along the elongated hole, the gear ring 311 and the internal tooth portion 341 are in meshing transmission, so that the position of the stop rod 31 relative to the elongated through hole is better positioned, the stop rod 31 is not easy to slide in the elongated through hole, and the accuracy of blocking is influenced.

The utility model discloses transportation equipment in the embodiment of the second aspect, including foretell gearshift. Alternatively, the transportation device may be an automobile or the like.

While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited thereto, and various changes and modifications may be made without departing from the spirit of the invention.

Claims (10)

1. A gear shifting apparatus, comprising:

a housing, an interior of the housing forming a cavity;

the gear assemblies comprise gears which are rotatably arranged in the cavities;

the gear entering module is arranged in the cavity and comprises a connecting rod and a stop rod which can be connected with the gear, the stop rod is connected to the first end of the connecting rod, and a push rod is arranged at the second end of the connecting rod;

the gear selecting module is arranged in the cavity and comprises a rotating wheel and a gear selecting power mechanism, the gear selecting power mechanism is used for driving the rotating wheel to rotate, the axial direction of the rotating wheel is parallel to the axial direction of the gear, a containing groove arranged in the circumferential direction is formed in the first end face of the rotating wheel, the end portion of the push rod is slidably arranged in the containing groove, the end portion of the push rod is arranged in the sliding process of the containing groove, and the end portion of the push rod is displaced in the radial direction of the rotating wheel.

2. The shifting apparatus of claim 1, wherein: the push rod comprises a rod body and a head, the head is connected to the end of the rod body to form the end of the push rod, the diameter of the head is smaller than that of the rod body, and the opening width of the accommodating groove is smaller than that of the head.

3. The shifting apparatus of claim 1, wherein: the gear component is provided with three gear components, and each gear component is respectively a forward rotation mechanism, a reverse rotation mechanism and a stop mechanism.

4. The shifting apparatus of claim 3, wherein: the storage tank comprises a main body section, the two ends of the main body section respectively form an included angle of 135 degrees with a connecting line of the circle center of the rotating wheel, the main body section comprises three component sections, the component sections comprise a gear selecting section and a gear shifting section which are sequentially connected, the end part of the push rod is arranged in the sliding process of the gear selecting section, the end part of the push rod is arranged in the axial direction of the rotating wheel to displace, and the distance between the gear shifting section and the circle center of the rotating wheel is increased after being reduced.

5. The shifting apparatus of claim 4, wherein: the quantity of main part section is two, two the tip that the main part section is close to each other is connected through the changeover portion, the both ends of changeover portion respectively with the contained angle that forms between the line of the runner centre of a circle is 45.

6. The shifting apparatus of claim 5, wherein: the gear shifting device further comprises a damping mechanism, the damping mechanism comprises a damping piece, an elastic piece and a damping seat fixed in the cavity, the damping piece is slidably mounted in the damping seat, the damping piece is located between the gear and the second end face of the rotating wheel, the second end face of the rotating wheel is provided with a bulge portion arranged in the circumferential direction of the rotating wheel, two ends of the elastic piece are respectively connected with the damping piece and the damping seat, and the elastic piece is used for applying pressure to the damping piece to apply the acting force to the second end face of the rotating wheel.

7. The shifting apparatus of claim 6, wherein: the both ends of bellying respectively with the contained angle that forms between the line of the runner centre of a circle is 135, the both ends of bellying are in projection on the first terminal surface coincides with the both ends of one of them main part section, it is protruding to be equipped with the transition of slope on the second terminal surface, the bellied first end of transition with the one end of bellying flushes, the bellied second end of transition with the second terminal surface flushes, the bellied both ends of transition respectively with the contained angle that forms between the line of the runner centre of a circle is 45.

8. The shifting apparatus of claim 3, wherein: go into to keep off module still includes the guide bracket, be equipped with the elongated hole on the guide bracket, the length direction in elongated hole parallel with the axial direction of gear, the only lever movable mounting be in elongated hole.

9. The shifting apparatus of claim 8, wherein: the stop rod is connected with the connecting rod in a rotating mode, the upper portion of the stop rod is provided with a gear ring arranged along the circumferential direction, inner tooth portions are arranged on two opposite sides of the elongated hole along the length direction, and the gear ring is meshed with the inner tooth portions.

10. A transport apparatus, characterized by: comprising a gear shift device according to any one of claims 1-9.

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