CN218810159U - Side is driven low fork compact carrier - Google Patents

Abstract

The utility model relates to a side-driving low-pallet fork compact type carrier; the bicycle comprises a front frame, a rear frame, a pedal assembly and an independent connecting rod mechanism, wherein two symmetrically-arranged fork legs are arranged at the bottom end of the front frame; the rear frame is provided with a pedal assembly, the upper surface of the pedal assembly is used as a treading surface for a person to tread, the transverse length of the treading surface is greater than that of the rear frame, and the two ends of the treading surface have extra areas relative to the two sides of the rear frame so as to be at least suitable for the person to tread with two feet; when the front frame is connected with the rear frame, the roller assemblies are installed from the notches of the channel steel, and the wrapping edges wrap the outer parts of the embedded edges; a floating driving mechanism is arranged in the rear frame; each fork leg is respectively provided with an independent connecting rod mechanism; the compactness of the vehicle body is adjusted, and the driving stability is improved.

Description

Side is driven low fork compact carrier

Technical Field

The utility model relates to a carrier technical field, concretely relates to low fork compact carrier is driven to side.

Background

In recent years, the carrier is widely applied to production workshops and logistics storage enterprises, and the overall production efficiency is greatly improved.

However, the prior carrier has the following significant problems: 1. the width of the pedal is generally smaller than the transverse width of the frame, so that an operator stands on the pedal and is positioned in the middle of the carrier, at the moment, the moving range of the operator is limited, the operation visual field is also limited, and if the operator wants to observe the carrying condition of the front fork, the operator can only stop the carrier and then get off and check the carrier or observe the carrier after bending the body; when the operator bends the body, the driving safety is caused; 2. the carrier generally comprises a fork leg and a link mechanism arranged in the fork leg, wherein the two link mechanisms are often integrated through a shaft rod, which causes one of the link mechanisms to touch a bumpy road surface and affect the operation of the other link mechanism; in addition, the existing link mechanism, such as application number 2017218962306, is named as a utility model of an electric forklift; the two rollers are arranged side by side, and the structure causes the fork surface width of the fork leg to be narrow, and the bearing capacity of the fork leg is limited; 3. the existing connection mode of the front frame and the rear frame is usually hinged and fixed by a connecting rod, so that the mounting difficulty of the front frame and the rear frame is huge, and auxiliary equipment is needed; in addition, a large gap is formed between the connecting rod and the vehicle body in a hinged mode, so that the size of the vehicle body is increased, and the vehicle is easy to shake in the driving process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low fork compact carrier is driven to side adjusts automobile body compactness, improves driving stability.

In order to achieve the purpose, the main technical solution of the present invention is a side-driving low-fork compact carrier, comprising a front frame, a rear frame, a pedal assembly and an independent link mechanism, wherein two symmetrically arranged fork legs are arranged at the bottom end of the front frame, the rear frame is used for loading a driving mechanism, the front frame is movably connected with the rear frame, and the front frame is lifted relative to the rear frame; the rear frame is provided with a pedal assembly, the upper surface of the pedal assembly is used as a treading surface for a person to tread, the transverse length of the treading surface is greater than that of the rear frame, and the two ends of the treading surface have extra areas relative to the two sides of the rear frame so as to be at least suitable for the person to tread with two feet;

the rear frame comprises two channel steels, a connecting plate, a frame mounting plate, a left side plate, a right side plate and a rear coaming, the two channel steels are longitudinally and symmetrically arranged, the connecting plate is arranged at the top between the two channel steels, and the frame mounting plate is arranged at the bottom between the two channel steels; the left side plate and the right side plate are respectively arranged on the outer side walls of the two channel steels, and two ends of the rear enclosing plate are respectively connected with the bottom side edges of the left side plate and the right side plate; the other side edges of the left side plate and the right side plate are inwards concave forwards and extend to form an embedded edge; the front frame comprises a front frame body which is surrounded by a plurality of surrounding plates and is provided with a box body space capable of containing a lithium battery, the front frame body is provided with two roller assemblies facing a back plate of the rear frame, the arrangement positions of the roller assemblies correspond to channel steel, and two side edges of the front frame body extend backwards to form covered edges; when the front frame is connected with the rear frame, the roller components are installed from the notches of the channel steel, and the wrapping edges are wrapped outside the embedded edges; a floating driving mechanism is arranged in the rear frame;

each fork leg is respectively provided with an independent connecting rod mechanism, and each independent connecting rod mechanism comprises a long connecting rod, a wheel frame, a lower connecting rod and at least two bearing wheel assemblies; the front end of the long connecting rod is connected with one end of the wheel carrier, and the rear end of the long connecting rod is connected with one end of the lower connecting rod; the other end of wheel carrier is U-shaped claw structure, and the both ends of U-shaped claw structure are equipped with the through-hole respectively, and two bear the weight of the wheel subassembly and roll through a bearing wheel round pin axle with a word arrangement mode and set up in U-shaped claw structure, and one of them end of U-shaped claw structure is equipped with a pinhole, the axis of pinhole is perpendicular for the through-hole axis, the one end of bearing wheel round pin axle is equipped with the connecting hole that corresponds with the pinhole, and the bearing wheel round pin axle runs through pinhole and connecting hole in proper order through the spring catch with fixed position through spring catch with the connecting hole

In some examples, the floating driving mechanism comprises a floating component and a driving assembly, the floating component comprises a driving seat, a driving mounting plate, two guide rods, two driving compression springs and a fixing piece, the driving seat comprises a transverse part and a longitudinal part, the transverse part is provided with a mounting hole, the driving assembly is fixedly connected with the driving seat through the mounting hole, the longitudinal part is provided with a mounting cavity, the longitudinal part is provided with two shaft holes communicated with the mounting cavity, the driving mounting plate is positioned in the mounting cavity, and the driving mounting plate is provided with two guide holes corresponding to the shaft holes; the guide rod penetrates into the guide hole from the shaft hole and is connected with the driving mounting plate, the driving compression spring is arranged on the rod body section of the guide rod exposed out of the mounting cavity, and the fixing piece is arranged at the end part of the guide rod and tightly pressed on the driving compression spring; the driving mounting plate is connected with a frame mounting plate of the rear frame.

In some examples, the pedal assembly is fixed and vertically disposed on the rear frame, the pedal assembly including a pedal panel and pedal side enclosures; the pedal side coaming is formed by bending a whole metal plate, and two ends of the pedal side coaming are respectively connected to the rear frame in a horizontally and fully-surrounded manner through screws; the shape of the pedal panel is matched with the shape formed by enclosing the side enclosing plate of the pedal, and the edge of the pedal panel is fixedly connected with the inner side wall of the side enclosing plate of the pedal.

In some examples, the pedal assembly further includes a supporting frame disposed in the pedal side panel enclosure space, one side of the supporting frame is fixedly connected to the rear frame, the other side of the supporting frame is connected to the pedal side panel, and the horizontal surface of the supporting frame is connected to the pedal panel.

In some examples, the bearing wheel assembly comprises a wheel body, two bearings and two dustproof covers, wherein the two bearings are respectively arranged in a central hole of the wheel body, the dustproof covers comprise a shaft sleeve part and a retainer ring part, the retainer ring part is integrally formed with one end of the shaft sleeve part, and the shaft sleeve part is fixedly butted with an inner ring of the bearing; the diameter of the stop ring part is equal to or larger than that of the bearing outer ring.

In some examples, the top end of the guide rod is a threaded section provided with external threads, the fixing member is a locknut, the locknut is screwed in the threaded section and abuts against one end of the driving pressure spring, so that the driving pressure spring is in a compressed state, and the other end of the driving pressure spring abuts against the end face of the transverse portion.

In some examples, be located and be equipped with spacing hole on the body of rod section of the guide arm in the drive mounting panel, drive mounting panel transverse arrangement has two spring pin holes that correspond with spacing hole, the subassembly that floats still includes two spring pins, the spring pin penetrates to spacing downthehole from the spring pin hole for the drive mounting panel is connected fixedly with the guide arm.

In some examples, the frame mounting plate is provided with a plurality of T-shaped through holes, and each T-shaped through hole is provided with a T-shaped shaft sleeve; the drive mounting panel is equipped with the round pin shaft hole corresponding with T shape through-hole, the round pin shaft hole is big aperture section and aperture section respectively, and the aperture of big aperture section equals with the aperture of T shape through-hole, T shape axle sleeve penetrates to big aperture section in from T shape through-hole, the bolt penetrates and screws firmly mutually with aperture section in T shape axle sleeve.

In some examples, the roller assembly comprises two vertical plates which are longitudinally arranged, a plurality of rollers are symmetrically arranged on the opposite wall surfaces of the vertical plates, the rollers are embedded in a C-shaped slideway of the channel steel, and the rollers slide up and down along the C-shaped slideway along with the lifting of the front frame; a plurality of triangular reinforcing plates are arranged on the wall surface of the vertical plate opposite to the vertical plate; and an oil cylinder top plate is arranged between the reinforcing plates, and the oil cylinder top plate is provided with a through hole through which the telescopic end of the oil cylinder can penetrate for installation.

In some examples, each vertical plate is provided with two roller mounting seats, each roller mounting seat is provided with a threaded hole, the rollers are mounted on the roller mounting seats, an adjusting gasket is arranged on the other side of each roller and is in contact with the inner wall surface of the channel steel, and the roller mounting seats are matched with fastening screws, so that gaps between the left side and the right side of the rear frame and the front frame during assembly are adjusted through the fastening screws.

The utility model discloses owing to adopted above technical scheme, realize following technological effect:

1. the step surface is widened, namely H is larger than H, two ends of the step surface are widened to be protruded relative to two sides of the rear frame, the protruded step surface part can be used for an operator to step, when the operator stands on the surface, the operator can drive laterally to operate the carrier, and on the other hand, the protruded part has a wider corresponding visual angle, so that the operator can know the condition that the cargo fork carries the cargos.

2. The roller assemblies are butted with the embedded openings of the channel steel, so that the front frame and the frame are more convenient to mount, the structure of the whole vehicle body is more compact, and the use is more reliable; wherein bordure the outside of parcel in embedding border and then form the sealed face of dislocation, this structure blocks that rainwater or wind-dust of lateral part get into, can protect inner connecting structure more effectively.

3. The two bearing wheel assemblies are arranged, and the two bearing wheels are arranged in a straight line, so that the bearing capacity is improved by transversely widening the width of the fork legs, and the wear loss of the bearing wheels can be reduced when the whole vehicle turns, and the service life of the bearing wheels is prolonged.

4. The floating driving mechanism is arranged, so that the running stability of the carrier can be effectively enhanced.

Drawings

Figure 1 is a schematic structural view of an embodiment of the present invention,

figure 2 is a schematic diagram of the structure from another perspective of the embodiment of figure 1,

figure 3 is a schematic diagram of the top plan view of the embodiment of figure 1,

figure 4 is a schematic structural view of an arrangement of independent linkages,

figure 5 is a schematic illustration of the exploded configuration of the single independent linkage mechanism of the embodiment of figure 4,

figure 6 is a schematic cross-sectional view of the embodiment of figure 4,

figure 7 is a schematic structural view of the rear frame of the embodiment of figure 1,

figure 8 is a schematic view of the rear frame of the embodiment of figure 7 from another perspective,

figure 9 is a schematic structural view of the front frame of the embodiment of figure 1,

figure 10 is a schematic diagram of the structure of the hydraulic assembly,

figure 11 is a schematic diagram of the embodiment of figure 10 with a lift cylinder,

figure 12 is a schematic diagram of the floating drive mechanism of the embodiment of figure 7,

figure 13 is an exploded view of the floating drive mechanism of the embodiment of figure 12,

figure 14 is a view of the connection of the drive mounting plate to the frame mounting plate of the embodiment of figure 12,

in the figure: the pedal assembly 1, the front frame 2, the rear frame 3, the fork 4, the handrail component 5, the face shield 6, the protruding particles 7, the pedal side coaming 8, the pedal panel 9, the supporting frame 10, the wheel frame 11, the bearing wheel 12, the guide wheel frame 13, the guide wheel 14, the fork legs 15, the long connecting rod 16, the lower connecting rod 17, the wear-resistant roller 18, the channel steel 19, the pressurizing mounting plate 20, the frame mounting plate 21, the notch 22, the connecting plate 23, the left side plate 24, the cushion block 25, the rear coaming 26, the adjusting gasket 27, the roller 28, the fastening screw 29, the vertical plate 30, the oil cylinder top plate 31, the reinforcing plate 32, the hard pipeline 33, the four-way valve 34, the pressurizing oil cylinder 35, the pressure-increasing oil cylinder the hydraulic lifting device comprises a lifting oil cylinder 36, a pressure spring 37, a telescopic end 38, a limiting groove 39, a quick-release pin shaft 40, a hemispherical convex base 41, a driving mounting plate 42, a driving pressure spring 43, a guide rod 44, a driving assembly 45, a T-shaped shaft sleeve 46, a bolt 47, a threaded section 48, a locknut 49, a limiting hole 50, a shaft sleeve 51, a driving seat 52, a guide hole 53, a spring pin 54, a spring pin hole 55, a pin shaft hole 56, a limiting piece 57, a steering pinion 58, a driving wheel 59, a steering bull gear 60, a bearing 61, a steering motor 62, a driving motor 63, a large-aperture section 64, a small-aperture section 65, a hydraulic station 66 and a hydraulic hose 67.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments described below are by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning "at least one" or "one or more," i.e., the number of an element can be one in one embodiment and the number of such elements can be plural in other embodiments, and the terms "a" and "an" should not be interpreted as limiting the number.

The first embodiment is as follows:

referring to fig. 1 to 14 of the drawings of the present specification, a side-driving low-pallet fork compact type truck according to a preferred embodiment of the present invention is illustrated, which comprises a front frame 2, a rear frame 3, a pedal assembly 1 and an independent link mechanism, wherein the bottom end of the front frame 2 is provided with two symmetrically arranged fork legs 15, the rear frame 3 is used for loading a driving mechanism, the front frame 2 is movably connected with the rear frame 3, and the front frame 2 is lifted and moved relative to the rear frame 3; the rear frame 3 is provided with a pedal assembly 1, the upper surface of the pedal assembly 1 is used as a treading surface for a person to tread, the transverse length of the treading surface is greater than that of the rear frame 3, and the area of two ends of the treading surface relative to two sides of the rear frame 3 is at least provided for the person to tread with feet; the rear frame 3 comprises two channel steels 19, a connecting plate 23, a frame mounting plate 21, a left side plate 24, a right side plate and a back panel 26, the two channel steels 19 are longitudinally and symmetrically arranged, the connecting plate 23 is arranged at the top between the two channel steels 19, and the frame mounting plate 21 is arranged at the bottom between the two channel steels 19; the left side plate 24 and the right side plate are respectively arranged on the outer side walls of the two channel steels 19, and two ends of the back panel 26 are respectively connected with the bottom side edges of the left side plate 24 and the right side plate; the other side edges of the left side plate 24 and the right side plate are inwards concave forwards and extend to form embedded edges; the front frame 2 comprises a front frame body which is enclosed by a plurality of coamings and is provided with a box body space capable of containing a lithium battery, the front frame body is provided with two roller assemblies towards a back plate of the rear frame 3, the arrangement positions of the roller assemblies correspond to channel steel 19, and two side edges of the front frame body extend backwards to form a covered edge; when the front frame 2 is connected with the rear frame 3, the roller wheel components are installed from the notch 22 of the channel steel 19, and the edge is wrapped outside the embedded edge; a floating driving mechanism is arranged in the rear frame 3; each fork leg 15 is respectively provided with an independent link mechanism which comprises a long connecting rod 16, a wheel frame 11, a lower connecting rod 17 and at least two bearing wheel 12 components; the front end of the long connecting rod 16 is connected with one end of the wheel carrier 11, and the rear end thereof is connected with one end of the lower connecting rod 17; the other end of the wheel carrier 11 is of a U-shaped claw structure, through holes are respectively formed in two ends of the U-shaped claw structure, two bearing wheel 12 assemblies are arranged in the U-shaped claw structure in a rolling mode in a straight line through a bearing wheel 12 pin shaft, a pin hole is formed in one end of the U-shaped claw structure, the axis of the pin hole is perpendicular to the axis of the through hole, a connecting hole corresponding to the pin hole is formed in one end of the bearing wheel 12 pin shaft, and the bearing wheel 12 pin shaft penetrates through the pin hole and the connecting hole in sequence through a spring pin 54 to be fixedly positioned; the technical scheme has the main innovation points that: 1. widening the treading surface, namely H is more than H, widening the treading surface until two ends of the treading surface are protruded relative to two sides of the rear frame 3, wherein the protruded treading surface part can be treaded by an operator, when the operator stands on the surface, the operator can drive the carrier laterally, and on the other hand, the protruded part has a wider corresponding visual angle, so that the operator can know the condition that the goods are carried by the fork 4; 2. the roller components are butted with the embedded openings of the channel steel 19, so that the front frame and the frame are more convenient to mount, the structure of the whole vehicle body is more compact, and the use is more reliable; the edge-covering edge is wrapped outside the embedded edge to form a staggered sealing surface, and the structure can prevent rainwater or wind dust on the side part from entering and can effectively protect the internal connecting structure; 3. the two bearing wheels 12 are arranged, and the two bearing wheels 12 are arranged in a straight line, so that the bearing capacity is improved by transversely widening the width of the fork legs 15, and the abrasion loss of the bearing wheels 12 can be reduced when the whole vehicle turns, and the service life of the bearing wheels 12 is prolonged; 4. the floating driving mechanism is arranged, so that the running stability of the carrier can be effectively enhanced.

Specifically, the pedal assembly 1 is fixed and vertically arranged on the rear frame 3, and the pedal assembly 1 comprises a pedal panel 9 and a pedal side coaming 8; the pedal side coaming 8 is formed by bending a whole metal plate, and two ends of the pedal side coaming are respectively connected to the rear frame 3 in a horizontally and fully surrounding manner through screws; the shape of the pedal panel 9 is matched with the shape formed by enclosing the pedal side-wall plate 8, the edge of the pedal panel 9 is fixedly connected with the inner side wall of the pedal side-wall plate 8, the strength of the fixedly arranged pedal assembly 1 is better than that of an overturning pedal, and the fixed arrangement mode is relatively good in connection stability because the stress of the pedal assembly 1 is uneven due to the fact that the pedal assembly 1 needs to be trampled by the side part of a worker; further, in order to enhance the supporting strength of the pedal panel 9, in this embodiment, the pedal assembly 1 further includes a supporting frame 10, the supporting frame 10 is disposed in the space surrounded by the pedal-side coaming 8, one side of the supporting frame 10 is fixedly connected to the rear frame 3, the other side of the supporting frame is connected to the pedal-side coaming 8, the horizontal surface of the supporting frame 10 is connected to the pedal panel 9, and the supporting frame 10 can be in a shape like a Chinese character 'shan', a Chinese character 'ri', or the like, and functions to enhance the supporting strength of the pedal panel 9 and prevent the pedal panel 9 from being damaged or being split from the pedal-side coaming 8.

In order to enlarge the treadable area of the pedal and increase the foot standing space, in this embodiment, as shown in fig. 1, the rear frame 3 includes a cover 6 for shielding the internal electronic device, and the cover 6 has a shape with a convex middle surface and two symmetrical concave end surfaces; the tread panel 9 has a length of edge arranged along the shape of the mask 6.

In this embodiment, the pedal panel 9 is located at a level lower than the surface of the pedal side surrounding plate 8, and a plurality of protruding particles 7 for increasing the stepping friction force are uniformly arranged on the stepping surface, so as to prevent the stepping operator from slipping.

In addition, in order to make the side driving safe for the operator of the truck, the rear frame 3 and/or the handle assembly 5 is provided to be grasped by the side driving of the operator, the handle assembly 5 is held by one hand of the operator standing on the pedal panel 9, and the handle assembly 5 includes a U-shaped handle bar to improve the safety.

The bearing wheel 12 assembly comprises a wheel body, two bearings 61 and two dustproof covers, wherein the two bearings 61 are respectively arranged in a central hole of the wheel body, each dustproof cover comprises a shaft sleeve 51 part and a retainer part, the retainer part is integrally formed with one end of the shaft sleeve 51 part, and the shaft sleeve 51 part is fixedly butted with an inner ring of each bearing 61; the diameter of the retainer ring part is equal to or larger than that of the outer ring of the bearing 61, the bearing 61 is arranged to improve the bearing capacity of the wheel carrier 11, the diameter of the retainer ring is arranged to effectively cover the whole bearing 61, impurities such as water and dust are prevented from entering the bearing 61, and the service life of the bearing 61 is prolonged. In this embodiment, the lower link 17 is a zigzag structure, one end of the lower link 17 is connected to the rear end of the long link 16, and the other end is connected to the frame, the bevel end of the lower link 17 is disposed at the bottom end of the frame, the structure is implemented based on the frame structure, and the strength of the component can be effectively enhanced by disposing a plurality of bevel angles, so that the strength needs to be increased, that is, the long link 16 generates a forward or backward moving force during the movement of the vehicle body, which further causes the lower link 17 to generate linkage, and if the strength is too low, the lower link is easily broken;

in the present embodiment, each fork leg 15 is provided with an independent linkage; one ends of the two lower connecting rods 17 are symmetrically and fixedly connected to the frame respectively, and the fork surface height of the fork 4 is 75-77 mm; the innovation point of the technical scheme is that the two independent link mechanisms are not connected and are connected independently of the frame, and in the traditional method, a shaft lever is arranged between the two link mechanisms, so that the two link mechanisms form a whole, and the defect of the whole structure is that once one link mechanism touches a bumpy road surface, the operation of the other link mechanism is influenced; but the two link mechanisms are independently arranged, so that the defects are eliminated, the generation of internal stress is avoided, and the reliability and the running stability are better; in addition, the fork surface height of 75-77 mm can further expand the application capability of fork transportation, because the height of the traditional fork surface is 85mm, and the standard of American standard double-sided trays and other special trays is about 76 mm; in the technical scheme, a guide wheel frame 13 is arranged at the front end of the fork leg 15, the guide wheel frame 13 is provided with two guide wheels 14 which are arranged side by side, the guide wheels 14 are positioned in front of the bearing wheel 12 components, and when the fork leg 15 enters a tray, the guide wheels 14 can guide the fork leg 15 to prevent the fork leg 15 from being clamped in the tray.

The wheel carrier 11 is provided with a shaft cylinder, and a pin shaft of the wheel carrier 11 penetrates through the shaft cylinder to enable the wheel carrier 11 to be connected with the inner side wall of the fork leg 15; and a wear-resistant roller 2818 is arranged between the end part of the shaft cylinder and the inner side wall of the fork leg 15, and the friction between the end part of the shaft cylinder and the inner side wall of the fork leg 15 can be effectively improved by arranging the wear-resistant roller 2818.

The driving mechanism comprises a driving wheel 59 mechanism for driving the vehicle body to move and a hydraulic component for driving the front frame 2 to lift relative to the rear frame 3, wherein the hydraulic component comprises a hydraulic station 66, a hydraulic hose 67, a four-way valve 34, a left lifting oil cylinder 36 and a right lifting oil cylinder 36; the hydraulic station 66 is arranged in the rear frame 3, the hydraulic station 66 is connected with an upper interface of the four-way valve 34 through a hydraulic hose 67, a left interface of the four-way valve 34 is connected with the left lifting oil cylinder 36 through a left hard pipeline 33, and a right interface of the four-way valve 34 is connected with the right lifting oil cylinder 36 through a right hard pipeline 33; the telescopic ends 38 of the left lifting oil cylinder 36 and the right lifting oil cylinder 36 are arranged at the through holes, the oil cylinder top plate 31 in the roller assembly is provided with the through holes, hydraulic oil passing through the hydraulic station 66 is input into the left lifting oil cylinder 36 and the right lifting oil cylinder 36, and the front frame 2 is lifted by lifting the roller assembly; in this embodiment, the hydraulic assembly further includes a pressurizing oil cylinder 35, a pressurizing mounting plate 20 is disposed in the middle between the two channel steels 19, the pressurizing oil cylinder 35 is connected to the pressurizing mounting plate 20, the top end of the pressurizing oil cylinder 35 is connected to the lower interface of the four-way valve 34, and a pressure spring 37 is disposed at the bottom of the pressurizing oil cylinder 35; compared with the lifting oil cylinder 36, the booster oil cylinder 35 has high transmission speed and is more stable; and the installation is convenient; the left lifting oil cylinder 36 and the right lifting oil cylinder 36 have the same structure, a limit hole 50 is arranged on the telescopic end 38, and the bottom end of the telescopic end is a hemispherical convex base 41 and is provided with a limit groove 39; the telescopic end 38 penetrates through a through hole of the oil cylinder top plate 31, the limiting hole 50 is provided with a quick-release pin shaft 40, the oil cylinder is prevented from falling off by the quick-release pin shaft 40, and a cushion block 25 which is matched with the semi-spherical convex base 41 and is provided with a semi-spherical concave surface is arranged below the semi-spherical convex base 41, so that the size deviation can be compensated; the limit screw passes through a threaded hole on the rear frame 3 and is inserted into the limit groove 39 to prevent the oil cylinder from falling off; the block 25 is mounted to the bottom of the channel 19.

The roller assembly comprises two vertical plates 30 which are longitudinally arranged, a plurality of rollers 28 are symmetrically arranged on the opposite wall surfaces of the vertical plates 30, the rollers 28 are embedded in a C-shaped slideway of the channel steel 19, and the rollers 28 slide up and down along the C-shaped slideway along with the lifting of the front frame 2; furthermore, a plurality of triangular reinforcing plates 32 are arranged on the wall surface of the vertical plate 30 opposite to the vertical plate, and the reinforcing plates 32 can effectively enhance the support property and the strength of the vertical plate 30; an oil cylinder top plate 31 is arranged between the reinforcing plates 32, and the oil cylinder top plate 31 is provided with a through hole for the telescopic end 38 of the oil cylinder to penetrate through; the rollers 28 are effective to simplify installation; it should also be mentioned that, in this embodiment, each vertical plate 30 is provided with two roller mounting seats, each roller mounting seat is provided with a threaded hole, the roller 28 is mounted on the roller mounting seat, the other side of the roller 28 is provided with an adjusting gasket 27, the adjusting gasket 27 is in contact with the inner wall surface of the channel steel 19, the roller mounting seat is adapted with a fastening screw 29, and a gap between the left side and the right side when the rear frame 3 and the front frame 2 are assembled is adjusted through the fastening screw 29; the gap control of the front frame 3 and the rear frame 3 is more stable, and the adaptability is wider.

The floating driving mechanism comprises a floating component and a driving assembly 45, the floating component comprises a driving seat 52, a driving mounting plate 42, two guide rods 44, two driving pressure springs 43 and a fixing piece, the driving seat 52 comprises a transverse part and a longitudinal part, the transverse part is provided with a mounting hole, the driving assembly 45 is fixedly connected with the driving seat 52 through the mounting hole, the longitudinal part is provided with a mounting cavity, the longitudinal part is provided with two shaft holes communicated with the mounting cavity, the driving mounting plate 42 is positioned in the mounting cavity, and the driving mounting plate 42 is provided with two guide holes 53 corresponding to the shaft holes; the guide rod 44 penetrates into the guide hole 53 from the shaft hole and is connected with the driving mounting plate 42, the driving compression spring 43 is arranged on the rod body section of the guide rod 44 exposed out of the mounting cavity, and the fixing piece is arranged at the end part of the guide rod 44 and is tightly pressed on the driving compression spring 43; the driving mounting plate 42 is connected with the rear frame 3; through the arrangement of the string rod type floating assembly, the driving seat 52 can be strung up and down along the guide rail and is buffered by the driving pressure spring 43, and the reason for the driving seat 52 to be strung up and down is generated when the driving assembly 45 drives on bumpy road conditions, so that the structure can effectively enhance the driving stability of the carrier

The top end of the guide rod 44 is a threaded section 48 with external threads, the fixing piece is a locknut 49, the locknut 49 is screwed in the threaded section 48 and abuts against one end of the driving pressure spring 43, so that the driving pressure spring 43 is in a compressed state, the other end of the driving pressure spring 43 abuts against the end face of the transverse part, and the locknut 49 is screwed by workers to facilitate disassembly and replacement of the driving pressure spring and maintenance; of course, in other embodiments, the fixing element may be fixedly disposed on the rod body of the guide rod 44, for example, a plurality of protruding blocks are disposed on the rod body of the guide rod 44, so that the driving compression spring 43 is compressed between the protruding blocks and the longitudinal surface, but this method has a drawback that the driving compression spring 43 cannot be detached and replaced, because the elasticity of the spring is gradually weakened during long-time use, and the buffering effect can be ensured only by replacing the compression spring 37, so the technical solution is a better technical solution; in addition, in this embodiment, a limiting hole 50 is provided on a rod body section of the guide rod 44 located in the driving mounting plate 42, two spring pin holes 55 corresponding to the limiting hole 50 are transversely arranged on the driving mounting plate 42, the floating assembly further includes two spring pins 54, and the spring pins 54 penetrate into the limiting hole 50 from the spring pin holes 55, so that the driving mounting plate 42 and the guide rod 44 are connected and fixed, which is also convenient for disassembly and assembly; further, the shaft hole is provided with a sleeve 51 matched with the shaft hole to protect the guide rod 44, and the bottom end of the guide rod 44 penetrates to the bottom of the longitudinal portion and is connected with a limiting member 57 to prevent the guide rod 44 from being separated.

In addition, the floating driving mechanism is arranged in a cavity enclosed by the back panel 26, and the connection mode of the driving mounting plate 42 and the frame mounting plate 21 can be implemented in various manners, in this embodiment, the driving mounting plate 42 is fixedly connected with the frame mounting plate 21 through a plurality of bolts 47, but what is different from the other bolt 47 fixing mode is that the frame mounting plate 21 is provided with a plurality of T-shaped through holes, and each T-shaped through hole is provided with a T-shaped shaft sleeve 46; the driving mounting plate 42 is provided with a pin shaft hole 56 corresponding to the T-shaped through hole, the pin shaft hole 56 is respectively provided with a large-aperture section 64 and a small-aperture section 65, the aperture of the large-aperture section 64 is equal to that of the T-shaped through hole, the T-shaped shaft sleeve 46 penetrates into the large-aperture section 64 from the T-shaped through hole, the bolt 47 penetrates into the T-shaped shaft sleeve 46 and is screwed and fixed with the small-aperture section 65, and the structure can effectively protect the bolt 47 and prevent the bolt 47 from being cut in the use process after mounting; the reason why shearing may occur is that the frame mounting plate 21 is fixedly disposed in the rear frame 3, and the driving mounting plate 42 is disposed in the longitudinal portion of the driving seat 52, when the driving assembly 45 runs on a bumpy road surface, the driving seat 52 will shake, and then the driving mounting plate 42 is driven to move relative to the frame mounting plate 21, so as to generate shearing force, and the hole site structural arrangement and the shaft sleeve 51 structural arrangement of the technical scheme can effectively protect the bolt 47.

The driving assembly 45 comprises a driving motor 63, a driving wheel 59, a steering motor 62, a steering bearing 61, a steering gearwheel 60 and a steering pinion 58; the drive motor 63 acts on the drive wheel 59; the output end of the steering motor 62 is inverted and connected with the steering small gear 58, the steering small gear 58 is meshed with the steering large gear 60, the steering large gear 60 is connected with the steering bearing 61, the steering bearing 61 is fixedly connected with the longitudinal part, and other structures are not described in detail, because the part of the driving assembly 45 is the prior art.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention.

The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims (10)

1. A side-driving low-fork compact carrier comprises a front frame (2), a rear frame (3), a pedal assembly (1) and an independent connecting rod mechanism, wherein two fork legs (15) which are symmetrically arranged are arranged at the bottom end of the front frame (2), the rear frame (3) is used for loading a driving mechanism, the front frame (2) is movably connected with the rear frame (3), and the front frame (2) can lift relative to the rear frame (3); the bicycle is characterized in that the rear frame (3) is provided with a pedal assembly (1), the upper surface of the pedal assembly (1) is used as a stepping surface for a person to step on, the transverse length of the stepping surface is greater than that of the rear frame (3), and the area of two ends of the stepping surface, which is increased relative to the two sides of the rear frame (3), can be at least used for the person to step on by two feet;

the rear frame (3) comprises two channel steels (19), a connecting plate (23), a frame mounting plate (21), a left side plate (24), a right side plate and a rear enclosing plate (26), the two channel steels (19) are longitudinally and symmetrically arranged, the connecting plate (23) is arranged at the top between the two channel steels (19), and the frame mounting plate (21) is arranged at the bottom between the two channel steels (19); the left side plate (24) and the right side plate are respectively arranged on the outer side walls of the two channel steels (19), and two ends of the back panel (26) are respectively connected with the bottom side edges of the left side plate (24) and the right side plate; the other side edges of the left side plate (24) and the right side plate are inwards concave forwards and extend to form embedded edges; the front frame (2) comprises a front frame body which is enclosed by a plurality of surrounding plates to form a front frame body, the front frame body is provided with a box body space capable of containing a lithium battery, the front frame body is provided with two roller assemblies towards a back plate of the rear frame (3), the arrangement positions of the roller assemblies correspond to channel steel (19), and two side edges of the front frame body extend backwards to form a covered edge; when the front frame (2) is connected with the rear frame (3), the roller components are installed from a notch (22) of a channel steel (19), and the edge is wrapped outside the embedded edge; a floating driving mechanism is arranged in the rear frame (3);

each fork leg (15) is respectively provided with an independent connecting rod mechanism, and each independent connecting rod mechanism comprises a long connecting rod (16), a wheel carrier (11), a lower connecting rod (17) and at least two bearing wheel (12) components; the front end of the long connecting rod (16) is connected with one end of the wheel carrier (11), and the rear end of the long connecting rod is connected with one end of the lower connecting rod (17); the other end of the wheel carrier (11) is of a U-shaped claw structure, through holes are formed in the two ends of the U-shaped claw structure respectively, two bearing wheel (12) assemblies are arranged in the U-shaped claw structure in a rolling mode in a straight line through a bearing wheel (12) pin shaft, a pin hole is formed in one end of the U-shaped claw structure, the axis of the pin hole is perpendicular to the axis of the through holes, a connecting hole corresponding to the pin hole is formed in one end of the bearing wheel (12) pin shaft, and the bearing wheel (12) pin shaft penetrates through the pin hole and the connecting hole in sequence through a spring pin (54) to be fixedly positioned.

2. The sidecar low-fork compact truck according to claim 1, wherein the floating driving mechanism comprises a floating assembly and a driving assembly (45), the floating assembly comprises a driving seat (52), a driving mounting plate (42), two guide rods (44), two driving compression springs (43) and a fixing member, the driving seat (52) comprises a transverse part and a longitudinal part, the transverse part is provided with a mounting hole, the driving assembly (45) is fixedly connected with the driving seat (52) through the mounting hole, the longitudinal part is provided with a mounting cavity, the longitudinal part is provided with two shaft holes communicated with the mounting cavity, the driving mounting plate (42) is positioned in the mounting cavity, and the driving mounting plate (42) is provided with two guide holes (53) corresponding to the shaft holes; the guide rod (44) penetrates into the guide hole (53) from the shaft hole and is connected with the driving mounting plate (42), the driving compression spring (43) is arranged on the rod body section of the guide rod (44) exposed out of the mounting cavity, and the fixing piece is arranged at the end part of the guide rod (44) and is tightly pressed on the driving compression spring (43); the driving mounting plate (42) is connected with a frame mounting plate (21) of the rear frame (3).

3. The sidecar low-fork compact truck according to claim 2, characterized in that said pedal assembly (1) is fixed and vertically arranged on a rear frame (3), said pedal assembly (1) comprising a pedal panel (9) and a pedal side panel (8); the pedal side coaming (8) is formed by bending a whole metal plate, and two ends of the pedal side coaming are respectively connected to the rear frame (3) in a horizontally and fully-surrounded manner through screws; the shape of the pedal panel (9) is matched with the shape formed by enclosing the pedal side coaming plate (8), and the edge of the pedal panel (9) is fixedly connected with the inner side wall of the pedal side coaming plate (8).

4. The side-drive low-fork compact van according to claim 3, wherein the pedal assembly (1) further comprises a support frame (10), the support frame (10) is disposed in the space enclosed by the pedal side panels (8), one side of the support frame (10) is fixedly connected to the rear frame (3), the other side of the support frame is connected to the pedal side panels (8), and the horizontal surface of the support frame (10) is connected to the pedal panel (9).

5. The sidelay low fork compact cart according to claim 1, wherein said load wheel (12) assembly comprises a wheel body, two bearings (61) and two dust caps, the two bearings (61) being respectively disposed in a central bore of the wheel body, said dust caps comprising a sleeve (51) portion and a collar portion, said collar portion being integrally formed with one end of the sleeve (51) portion, said sleeve (51) portion being secured in abutment with an inner race of the bearings (61); the diameter of the stop ring part is equal to or larger than that of the outer ring of the bearing (61).

6. The truck according to claim 2, wherein the top end of the guide bar (44) is a threaded section (48) provided with an external thread, and the fixing member is a lock nut (49), and the lock nut (49) is screwed into the threaded section (48) and abuts against one end of the driving compression spring (43), so that the driving compression spring (43) is in a compressed state, and the other end of the driving compression spring (43) abuts against the end surface of the transverse portion.

7. The side-drive low-fork compact truck according to claim 2, wherein a limiting hole (50) is formed in a section of the guide bar (44) located in the driving mounting plate (42), two spring pin holes (55) corresponding to the limiting hole (50) are transversely arranged in the driving mounting plate (42), the floating assembly further comprises two spring pins (54), and the spring pins (54) penetrate into the limiting hole (50) from the spring pin holes (55), so that the driving mounting plate (42) is fixedly connected with the guide bar (44).

8. The sidelay low-fork compact truck according to claim 2, wherein said frame mounting plate (21) is provided with a plurality of T-shaped through holes, each T-shaped through hole being provided with a T-shaped bushing (46); drive mounting panel (42) are equipped with the round pin shaft hole (56) corresponding with T shape through-hole, round pin shaft hole (56) big aperture section (64) and small aperture section (65) respectively, and the aperture of big aperture section (64) equals with the aperture of T shape through-hole, T shape axle sleeve (46) penetrate to big aperture section (64) in from T shape through-hole, and bolt (47) penetrate and twist admittedly mutually with small aperture section (65) in T shape axle sleeve (46).

9. The side-driving low-pallet-fork compact truck as claimed in claim 1, wherein the roller assembly comprises two vertical plates (30) arranged longitudinally, a plurality of rollers (28) are symmetrically arranged on the opposite wall surfaces of the vertical plates (30), the rollers (28) are embedded in the C-shaped slideway of the channel steel (19), and the rollers (28) slide up and down along the C-shaped slideway along with the lifting of the front frame (2); a plurality of triangular reinforcing plates (32) are arranged on the wall surface of the vertical plate (30) opposite to the vertical plate; an oil cylinder top plate (31) is arranged between the reinforcing plates (32), and the oil cylinder top plate (31) is provided with a through hole through which an oil cylinder telescopic end (38) can penetrate for installation.

10. The side-drive low-pallet-fork compact carrier as claimed in claim 9, wherein each vertical plate (30) is provided with two roller mounting seats, each roller mounting seat is provided with a threaded hole, each roller (28) is mounted on the corresponding roller mounting seat, the other side of each roller (28) is provided with an adjusting gasket (27), each adjusting gasket (27) is in contact with the inner wall surface of the corresponding channel steel (19), each roller mounting seat is matched with a fastening screw (29), and the gap between the left side and the right side of the rear frame (3) and the gap between the left side and the right side of the front frame (2) during assembly are adjusted through the fastening screws (29).

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