CN220243436U - Tricycle frame structure - Google Patents

Abstract

The utility model belongs to the technical field of tricycles, and particularly discloses a tricycle frame structure, which comprises two support arms, a cantilever detachably connected between the two support arms and a bracket fixed on the cantilever, wherein the bracket is used for being connected and fixed with an engine, the bracket is fixed in the middle of the cantilever, and the cantilever is erected at the upper end of the support arm and connected with the support arm; the frame body is provided with a mounting hole for mounting a suspension structure, the inner wall of the mounting hole is fixedly provided with a mounting block connected with a supporting arm, the mounting block is U-shaped, two ends of the supporting arm are clamped into the mounting block, the side wall of the mounting block is provided with a first connecting hole, the end part of the supporting arm is provided with a second connecting hole communicated with the first connecting hole, and the frame body further comprises a positioning pin for being inserted into the first connecting hole and the second connecting hole. By adopting the scheme of the utility model, the problems that the suspension bracket is required to be ensured to be positioned in the middle of the frame and the suspension bracket is prevented from shifting and is inconvenient to assemble can be solved.

Description

Tricycle frame structure

Technical Field

The utility model belongs to the technical field of tricycles, and particularly relates to a tricycle frame structure.

Background

The frame is the main bearing part of the vehicle, the strength and fatigue life of the frame are critical to the vehicle, and the transmission shaft of the tricycle in the prior art is mostly biased at one side of the vehicle, so that the weight distribution of the vehicle is balanced, and the steering performance and stability of the vehicle are reduced. In order to solve the above-mentioned problem, a middle engine is proposed in the prior art, i.e. the engine is installed in the middle of the frame, for example, patent CN201720605328.5 discloses a chassis of a motor tricycle, i.e. the engine is installed on a suspension bracket in the middle of the front end of the frame, and the stress on two sides of the vehicle is uniform through the middle engine.

When the engine is assembled on the frame, the fixing structure is generally required to be fixed, as the suspension bracket provided in the middle of the front end of the frame is set in the patent, because the vehicle can generate severe vibration in the running process, and the engine can generate certain vibration, so in order to ensure the stability of the connection between the engine and the frame, as shown in fig. 9, in the prior art, the suspension bracket 24 is provided with two groups of notches which are respectively positioned on two sides of the engine 16, and the suspension bracket 24 is provided with notches which are in a C shape, the upper end and the lower end of the suspension bracket 24 are fixed with the engine 16, and the side wall of the engine 16 is clamped into the notches on the suspension bracket 24 to a certain extent, so that the engine 16 is better fixed. However, in this case, if the mount 24 is directly fixed to the vehicle frame, it is difficult to lock the engine 16 into the mount 24, and therefore, it is necessary to first lock the engine 16 to the mount 24 and then to fix the mount 24 to the vehicle frame. When the suspension frame 24 is assembled to the frame, the suspension frame 24 needs to be ensured to be positioned in the middle of the frame to avoid the displacement of the suspension frame 24, but as the suspension frame 24 is provided with two groups of suspension frames which are respectively positioned on two sides of the engine 16, when the suspension frames 24 on one side are connected, the suspension frames 24 on the other side need to be supported, and the assembly is inconvenient.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model provides a tricycle frame structure, which aims at solving the problems that a suspension bracket needs to be ensured to be positioned in the middle of a frame, and the suspension bracket is prevented from shifting and is inconvenient to assemble.

According to the embodiment of the utility model, the following technical scheme is adopted:

the tricycle frame structure comprises a frame body, wherein the middle part of the front end of the frame body is detachably connected with a suspension structure for installing an engine, and the rear end of the frame body is provided with a rear axle shock absorption structure; the suspension structure comprises two support arms, a cantilever which is detachably connected to the two support arms and a bracket which is fixed on the cantilever, wherein the bracket is used for being fixedly connected with an engine, the bracket is fixed in the middle of the cantilever, and the cantilever is erected at the upper end of the support arm and is connected with the support arm; offer the first mounting hole that is used for installing suspension structure on the frame body, first mounting hole inner wall is fixed with the installation piece that is used for being connected with the support arm, the installation piece is U style of calligraphy and opening orientation and is on a parallel with the vertical plane at the axis place of engine transmission shaft, in the installation piece was gone into to the both ends card of support arm, first connecting hole has been seted up to the installation piece lateral wall, the support arm tip has been seted up and is used for the second connecting hole with first connecting hole intercommunication, still including being used for inserting first connecting hole, locating pin in the second connecting hole.

Compared with the prior art, the utility model has the following beneficial effects:

the bracket sets up in the middle part of cantilever, and the engine is connected to the bracket, can be located the middle part of cantilever, is connected the support arm on the cantilever, and above-mentioned in-process, the engine all can be directly placed subaerial and assemble, and need not to hold up the engine.

When the support arm is assembled on the frame body, two ends of the support arm are inserted into the mounting block from the upper part, one end of the support arm is supported firstly, the end of the support arm is clamped into the mounting block and is inserted with the locating pin, and then the other end of the support arm is supported again to install the locating pin of the end. The support arm is limited by the side wall of the mounting block and the locating pin, the position of the support arm is fixed, and then the support arm can be fixed on the frame body.

In this scheme, through installing piece lateral wall, locating pin to advance the location to the support arm, then at fixed support arm and frame body, avoid this in-process support arm to shift.

Further, the two cantilevers are arranged, brackets on the two cantilevers are arranged oppositely, and an installation position for installing the engine is formed between the two brackets.

Further, a shock pad is arranged between the cantilever and the supporting arm.

Further, the first connecting hole is a bar-shaped hole, and the length direction of the bar-shaped hole is along the axial direction of the supporting arm.

Further, the two ends of the cantilever extend to the two sides of the frame body and are erected on the frame body.

Further, the rear axle shock-absorbing structure comprises a shock-absorbing component and a supporting component which are arranged on the frame body, wherein the shock-absorbing component is arranged at the upper end of the rear axle and is used for buffering the movement of the rear axle from the upper part of the rear axle, and the supporting component is used for supporting the rear axle from the lower part of the rear axle; the frame body comprises a first horizontal part and a second horizontal part, and the first horizontal part and the second horizontal part are respectively fixed at the upper end and the lower end of the vertical part and are respectively positioned at the two sides of the vertical part; the damping component comprises a damping spring, and two ends of the damping spring are detachably connected to the rear axle and the first horizontal part respectively.

Further, the supporting component comprises a bracket arm and a connecting seat, and the connecting seat is detachably connected to the rear axle; the bracket arm comprises a connecting rod, a reinforcing rod and a reinforcing block connected between the connecting rod and the reinforcing rod, one end of the reinforcing rod is fixed with the reinforcing block, the other end of the reinforcing rod is hinged with the second horizontal part, the middle part of the connecting rod is fixed with the reinforcing block, and the two ends of the connecting rod are respectively and movably connected with the second horizontal part and the connecting seat.

Further, the longitudinal section of the connecting seat is U-shaped, the distance between two sides of the connecting seat is larger than the width of the connecting rod, the connecting rod is provided with second mounting holes, two sides of the connecting seat are provided with through holes communicated with the second mounting holes, the inner diameter of each through hole is smaller than that of each second mounting hole, the connecting seat further comprises a connecting pin used for being inserted into each through hole and each second mounting hole, the connecting pin is in clearance fit with each through hole, and two ends of each connecting pin extend out of the through holes on two sides of the connecting seat respectively and are in threaded connection with nuts.

Further, a first groove for the rear axle to be clamped in is formed in the connecting seat; the connecting rod is provided with a second groove for the rear axle to be clamped in, and two ends of the connecting seat are connected with the connecting rod.

Further, the cross section of the reinforcing block is triangular.

Drawings

Fig. 1 is a schematic view of the overall structure of a tricycle according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram of the overall structure of the suspension structure and the frame body according to the embodiment of the present utility model.

Fig. 3 is a schematic view of the whole structure of the suspension structure in fig. 2.

Fig. 4 is a schematic view of the cooperation of the suspension structure and the frame body in the embodiment of the present utility model.

Fig. 5 is a schematic diagram of the overall structure of the rear axle shock-absorbing structure and the frame body in the embodiment of the utility model.

Fig. 6 is a schematic view of the support assembly of fig. 5.

Fig. 7 is a side view of fig. 6.

Fig. 8 is a schematic view of the mating of the bracket arm and the rear axle of fig. 5.

Fig. 9 is a schematic view of an engine mounting structure in the background of the utility model.

In the figure: 1. a frame body; 2. a rear axle; 3. a damping spring; 4. a second horizontal portion; 5. a vertical portion; 6. a first horizontal portion; 7. a connecting seat; 8. a mounting base; 9. a bracket arm; 10. a through hole; 11. a connecting rod; 12. a reinforcing rod; 13. a reinforcing block; 14. a first groove; 15. a second mounting hole; 16. an engine; 17. a first mounting hole; 18. a support arm; 19. a cantilever; 20. a mounting block; 21. a first connection hole; 22. a bracket; 23. a second connection hole; 24. and a hanging frame.

Detailed Description

The utility model is described in further detail below with reference to the drawings in the specification and the detailed description is given.

As shown in fig. 1, 2 and 3, the tricycle frame structure comprises a frame body 1, wherein a suspension structure for installing an engine 16 is detachably connected to the middle part of the front end of the frame body 1, and a rear axle shock-absorbing structure is arranged at the rear end of the frame body 1. The frame body 1 comprises a first horizontal part 6, a second horizontal part 4 and a vertical part 5, wherein the first horizontal part 6 and the second horizontal part 4 are respectively fixed at the upper end and the lower end of the vertical part 5 and are respectively positioned at two sides of the vertical part 5, and the rear axle 2 and the rear wheels of the vehicle are respectively arranged below the first horizontal part 6.

The utility model provides a rear axle shock-absorbing structure, including installing the damper on frame body 1, damper locates rear axle 2 upper end and is used for buffering rear axle 2 motion from rear axle 2 top, in this embodiment, damper is including a plurality of damping spring 3 of equipartition in rear axle 2 both sides, shown in fig. 5 and two, and distribute respectively in the both sides of rear axle 2, damping spring 3 both ends are detachable connection respectively in rear axle 2, first horizontal part 6, specifically, damping spring 3 selects the coil spring bumper shock absorber among the prior art (including telescopic link and cover establish the coil spring in the telescopic link outside), damping spring 3 upper end bolted connection is on first horizontal part 6, damper still includes the mount pad 8 of fixing on rear axle 2, mount pad 8 can weld on rear axle 2 directly, damping spring 3 lower extreme bolted connection is on mount pad 8, damping spring 3 can maintain or change according to actual demand, and install and remove damping spring 3 and mount pad 8 more times, and also only install damping spring 3 and mount pad 8 can not damage rear axle 2 structure.

The suspension structure comprises two support arms 18, a cantilever 19 detachably connected to the two support arms 18 and a bracket 22 fixed to the cantilever 19, wherein the bracket 22 is used for being fixedly connected with the engine 16, a C-shaped opening is formed in the bracket 22, and in the actual installation process, the upper end and the lower end of the bracket 22 are both in bolt connection or direct welding fixation with the engine 16. The two cantilevers 19 are provided, and the brackets 22 on the two cantilevers 19 are arranged oppositely, and a mounting position for mounting the engine 16 is formed between the brackets 22 on the two cantilevers 19, that is, openings of the brackets 22 on the two cantilevers 19 are opposite, in the actual design process, a plurality of brackets 22 can be arranged on the cantilevers 19 to enhance the connection strength with the engine 16, in this embodiment, two brackets 22 are taken as an example on each cantilever 19.

Bracket 22 is fixed to the middle of cantilever 19 so that engine 16 is located in the middle of cantilever 19, and cantilever 19 is mounted on the upper end of support arm 18 and connected to support arm 18, specifically, cantilever 19 and support arm 18 are bolted. The frame body 1 is provided with a first mounting hole 17 for mounting a suspension structure, the inner wall of the first mounting hole 17 is fixedly provided with a mounting block 20 for being connected with a supporting arm 18, the mounting block 20 is U-shaped and is opened towards a vertical plane where an axis parallel to a transmission shaft of the engine 16 is located, two ends of the supporting arm 18 are clamped into the mounting block 20, the distance between two side walls of the mounting block 20 is equal to the width of the supporting arm 18, so that the supporting arm 18 is limited through the side walls of the mounting block 20, and the opening of the mounting block 20 is parallel to the vertical plane where the axis of the transmission shaft of the engine 16 is located. The side wall of the mounting block 20 is provided with a first connecting hole 21, the end of the supporting arm 18 is provided with a second connecting hole 23 for communicating with the first connecting hole 21, and the mounting block further comprises a positioning pin (not shown in the figure) for being inserted into the first connecting hole 21 and the second connecting hole 23.

In particular, when the bracket 22 is connected to the engine 16, the bracket 22 is disposed in the middle of the cantilever 19, and the engine 16 and the bracket 22 are connected to each other and then positioned in the middle of the cantilever 19. Then, when the support arm 18 is assembled to the frame body 1, both ends of the support arm 18 are inserted into the mounting block 20 from above, one end of the support arm 18 is lifted up so that the end of the support arm 18 is clamped into the mounting block 20 and a positioning pin is inserted, then the other end of the support arm 18 is lifted up again, the positioning pin of the end is mounted, and the support arm 18 is connected to the mounting block 20 through the arrangement of the positioning pin. The support arm 18 is limited by the side wall of the mounting block 20 and the positioning pin, the position of the support arm 18 is fixed, and then the support arm 18 can be initially fixed on the frame body 1, and welding or other connection modes (such as bolting) can be selected.

In another embodiment of the present utility model, a shock pad is disposed between the cantilever 19 and the support arm 18, specifically, the upper end of the support arm 18 is adhered with the shock pad, when the cantilever 19 is erected on the support arm 18, the shock pad is erected on the shock pad, then the cantilever 19 is bolted to the support arm 18, the shock pad is selected from the rubber pads with shock absorbing effect in the prior art, and when the engine 16 itself vibrates during running of the vehicle, the vibration can be absorbed by the shock pad and a certain sound insulation effect can be achieved.

In another embodiment of the present utility model, the first connecting hole 21 is a bar-shaped hole, the length direction of the bar-shaped hole is along the axial direction of the supporting arm 18, after the end of the supporting arm 18 is inserted into the mounting block 20, the positioning pin passes through the first connecting hole 21 and the second connecting hole 23 to perform the pre-positioning, so that the transmission shaft of the engine 16 is located in the middle of the frame body 1, and for facilitating the subsequent assembly of the engine 16, the supporting arm 18 can drive the engine 16 to move in the bar-shaped hole along the axial direction of the supporting arm 18 to a certain extent through the arrangement of the bar-shaped hole, and the position of the engine 16 is adjusted.

In another embodiment of the present utility model, as shown in fig. 4, two ends of the cantilever 19 extend to two sides of the frame body 1 and are set up on the frame body 1, and the cantilever 19 is supported by the frame body 1, so that the supporting effect of the cantilever 19 is further improved, that is, the supporting strength of the frame body 1 to the engine 16 is further improved, and in the actual design process, two ends of the cantilever 19 may also be bolted to the frame body 1.

In another embodiment of the present utility model, the rear axle shock absorbing structure further includes a supporting component mounted on the frame body 1, the supporting component is used for supporting the rear axle 2 from below the rear axle 2, the supporting component is provided with a plurality of groups, and is uniformly distributed on the rear axle 2, two groups are shown in fig. 5, and are respectively distributed on two sides of the rear axle 2. As shown in fig. 6, the supporting component comprises a bracket 9 and a connecting seat 7, the bracket 9 comprises a connecting rod 11, a reinforcing rod 12 and a reinforcing block 13 connected between the connecting rod 11 and the reinforcing rod 12, the cross section of the reinforcing block 13 is triangular, one end of the reinforcing rod 12 is fixed with the reinforcing block 13, the other end of the reinforcing rod 12 is movably connected with the frame body 1, the middle part of the connecting rod 11 is fixed with the reinforcing block 13, the two ends of the connecting rod 11 are movably connected with the frame body 1 and the connecting seat 7 respectively, the connecting strength of the reinforcing rod 12 and the connecting rod is increased through the reinforcing block 13, the connecting rod 11 and the reinforcing rod 12 are connected with the frame body 1, namely the bracket 9 and the frame body 1 are connected at two points, and the multipoint connection with the frame body 1 can be realized through the bracket 9 of the supporting component, the connecting strength of the bracket 9 and the frame body 1 is increased, and the supporting strength of the rear axle 2 is further increased to a certain extent, especially, when the rear axle 2 is reduced, the bracket 9 is driven to move transversely, and the connection of the bracket 9 and the frame body 1 is unstable.

In this embodiment, the connecting rod 11 and the reinforcing rod 12 are hinged to the second horizontal portion 4. Referring to fig. 7 and 8, the specific connection manner of the connecting rod 11 and the connection base 7 is as follows: the longitudinal section of the connecting seat 7 is U-shaped, the distance between two sides of the connecting seat 7 is larger than the width of the connecting rod 11, the connecting rod 11 is provided with a second mounting hole 15, two sides of the connecting seat 7 are provided with through holes 10 communicated with the second mounting hole 15, the inner diameter of each through hole 10 is smaller than that of each second mounting hole 15, the connecting seat further comprises a connecting pin (not shown in the figure) used for being inserted into each through hole 10 and each second mounting hole 15, the connecting pin and the through holes 10 are in clearance fit, and two ends of each connecting pin respectively extend out of the through holes 10 on two sides of the connecting seat 7 and are in threaded connection with nuts. The connecting seat 7 is detachably connected to the rear axle 2, and specifically, the connecting seat 7 is connected to the rear axle 2 through bolts.

When the shock-absorbing device is specifically used, in the running process, when the rear axle 2 vibrates vertically, the shock-absorbing spring 3 stretches or contracts along with the shock-absorbing spring, and the shock-absorbing spring 3 is used for buffering. Meanwhile, the connecting seat 7 moves upwards or downwards along with the rear axle 2, the connecting pin moves along with the connecting seat 7, the outer diameter of the connecting pin is smaller than the inner diameter of the second mounting hole 15, the connecting pin can move in a certain range in the second mounting hole 15 without driving the connecting rod 11 to move, even if the connecting rod 11 is driven to deflect upwards or downwards in a small range, the other end of the connecting rod 11 can deflect relative to the frame body 1, the vibration of the rear axle 2 in a certain range in the vertical direction is adapted, and after the vibration exceeds the range, the rear axle 2 is limited by the bracket arm 9 and the frame body 1, so that the vibration amplitude is prevented from being too large.

When the rear axle 2 transversely shakes, the connecting seat 7 moves transversely along with the rear axle 2, the distance between two sides of the connecting seat 7 is larger than the width of the connecting rod 11, then in the distance between two sides of the connecting seat 7, the connecting seat 7 can move relative to the connecting rod 11 without driving the connecting rod 11 to move, the rear axle 2 can shake in a certain range transversely, after exceeding the range, the rear axle 2 can be limited by the bracket arm 9 and the frame body 1, and the shaking amplitude is avoided.

In another embodiment of the present utility model, the connecting seat 7 is provided with a first groove 14 into which the rear axle 2 is clamped, and the rear axle 2 is limited by the first groove 14, so that the rear axle 2 and the connecting seat 7 can keep synchronous movement in the running direction of the vehicle, and the stress of the connecting position of the connecting seat 7 and the rear axle 2 in the running process is reduced.

In another embodiment of the present utility model, as shown in fig. 8, the connecting rod 11 is provided with a second groove into which the rear axle 2 is clamped, both ends of the connecting seat 7 are connected with the connecting rod 11, that is, two second mounting holes 15 are provided on the connecting rod 11, and the two second mounting holes 15 are respectively located at two sides of the rear axle 2, so as to increase the connection strength of the connecting rod 11 and the connecting seat 7.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.

Claims (10)

1. The tricycle frame structure comprises a frame body, wherein the middle part of the front end of the frame body is detachably connected with a suspension structure for installing an engine, and the rear end of the frame body is provided with a rear axle shock absorption structure; the method is characterized in that: the suspension structure comprises two support arms, a cantilever which is detachably connected to the two support arms and a bracket which is fixed on the cantilever, wherein the bracket is used for being fixedly connected with an engine, the bracket is fixed in the middle of the cantilever, and the cantilever is erected at the upper end of the support arm and is connected with the support arm; offer the first mounting hole that is used for installing suspension structure on the frame body, first mounting hole inner wall is fixed with the installation piece that is used for being connected with the support arm, the installation piece is U style of calligraphy and opening orientation and is on a parallel with the vertical plane at the axis place of engine transmission shaft, in the installation piece was gone into to the both ends card of support arm, first connecting hole has been seted up to the installation piece lateral wall, the support arm tip has been seted up and is used for the second connecting hole with first connecting hole intercommunication, still including being used for inserting first connecting hole, locating pin in the second connecting hole.

2. The tricycle frame structure according to claim 1, wherein: the two cantilevers are arranged, brackets on the two cantilevers are arranged oppositely, and an installation position for installing the engine is formed between the two brackets.

3. The tricycle frame structure according to claim 1, wherein: and a shock pad is arranged between the cantilever and the supporting arm.

4. The tricycle frame structure according to claim 1, wherein: the first connecting hole is a strip-shaped hole, and the length direction of the strip-shaped hole is along the axial direction of the supporting arm.

5. The tricycle frame structure according to claim 1, wherein: the two ends of the cantilever extend to the two sides of the frame body and are erected on the frame body.

6. The tricycle frame structure according to claim 1, wherein: the rear axle shock-absorbing structure comprises a shock-absorbing component and a supporting component, wherein the shock-absorbing component and the supporting component are arranged on the frame body, the shock-absorbing component is arranged at the upper end of the rear axle and is used for buffering the movement of the rear axle from the upper part of the rear axle, and the supporting component is used for supporting the rear axle from the lower part of the rear axle; the frame body comprises a first horizontal part and a second horizontal part, and the first horizontal part and the second horizontal part are respectively fixed at the upper end and the lower end of the vertical part and are respectively positioned at the two sides of the vertical part; the damping component comprises a damping spring, and two ends of the damping spring are detachably connected to the rear axle and the first horizontal part respectively.

7. The tricycle frame structure of claim 6, wherein: the support assembly comprises a bracket arm and a connecting seat, and the connecting seat is detachably connected to the rear axle; the bracket arm comprises a connecting rod, a reinforcing rod and a reinforcing block connected between the connecting rod and the reinforcing rod, one end of the reinforcing rod is fixed with the reinforcing block, the other end of the reinforcing rod is hinged with the second horizontal part, the middle part of the connecting rod is fixed with the reinforcing block, and the two ends of the connecting rod are respectively and movably connected with the second horizontal part and the connecting seat.

8. The tricycle frame structure of claim 7, wherein: the longitudinal section of the connecting seat is U-shaped, the distance between two sides of the connecting seat is larger than the width of the connecting rod, the connecting rod is provided with second mounting holes, two sides of the connecting seat are provided with through holes communicated with the second mounting holes, the inner diameter of each through hole is smaller than that of each second mounting hole, the connecting seat further comprises a connecting pin used for being inserted into each through hole and each second mounting hole, the connecting pin is in clearance fit with each through hole, and two ends of each connecting pin extend out of the through holes on two sides of the connecting seat respectively and are in threaded connection with nuts.

9. The tricycle frame structure according to claim 8, wherein: the connecting seat is provided with a first groove for the rear axle to be clamped in; the connecting rod is provided with a second groove for the rear axle to be clamped in, and two ends of the connecting seat are connected with the connecting rod.

10. The tricycle frame structure of claim 7, wherein: the cross section of the reinforcing block is triangular.