CN218229279U - Damping and shock-absorbing integrated wheelbarrow - Google Patents

Abstract

The utility model discloses a wheel barrow of damping integration, include: a motor wheel; the frame is movably connected up and down relative to the motor wheel, and two sides of the frame are respectively provided with a pedal; the single-cylinder damping shock absorber is connected between the motor wheel and the frame and provides shock absorption and damping for the up-and-down movement of the frame; the single-cylinder damping shock absorber comprises a cylinder barrel, a piston rod, an oil piston and a floating plug, wherein the oil piston and the floating plug are sequentially arranged in the cylinder barrel in a sliding mode to sequentially divide a cavity in the cylinder barrel into a first oil cavity, a second oil cavity and an air cavity, the piston rod penetrates into the first oil cavity from one end of the cylinder barrel and is connected with the oil piston, and a damping valve used for conducting the first oil cavity and the second oil cavity is arranged on the piston rod and/or the oil piston. The utility model provides a wheel barrow of damping integration, with damping function and shock-absorbing function integrated to single section of thick bamboo damping bumper shock absorber on, its simple structure, whole occupation space is little.

Description

Damping and shock-absorbing integrated wheelbarrow

Technical Field

The utility model relates to a wheel barrow technical field especially relates to a wheel barrow of damping integration.

Background

In the existing damping wheelbarrow, the used damping structure and damping structure are relatively independent, and need to be realized by adopting a plurality of parts, the structure is complex, and the assembly procedures are multiple.

Also in some structures, establish the spring at the attenuator overcoat, utilize the spring in order playing the shock attenuation effect, the spring exposes, is unfavorable for safe handling, if can press from both sides foreign matters such as stone, if establish the protective sheath additional, will increase shock-absorbing structure's whole volume, the structure is complicated, uses and experiences poorly.

SUMMERY OF THE UTILITY MODEL

In order to overcome above-mentioned prior art an at least defect, the utility model provides a wheel barrow of damping integration, with damping function and shock-absorbing function integrated to the single section of thick bamboo damping bumper shock absorber on, its simple structure, whole occupation space is little.

The utility model discloses a solve the technical scheme that its problem adopted and be:

a damping and shock absorbing integrated wheelbarrow comprising:

a motor wheel;

the frame is movably connected up and down relative to the motor wheel, and two sides of the frame are respectively provided with a pedal;

the single-cylinder damping shock absorber is connected between the motor wheel and the frame and provides shock absorption and damping for the up-and-down movement of the frame;

the single-cylinder damping shock absorber comprises a cylinder barrel, a piston rod, an oil piston and a floating plug, wherein the oil piston and the floating plug are sequentially arranged in the cylinder barrel in a sliding mode to sequentially divide a cavity in the cylinder barrel into a first oil cavity, a second oil cavity and an air cavity, the piston rod penetrates into the first oil cavity from one end of the cylinder barrel and is connected with the oil piston, and a damping valve used for conducting the first oil cavity and the second oil cavity is arranged on the piston rod and/or the oil piston.

The utility model provides a wheel barrow of damping shock attenuation integration, through floating the stopper with the oil-gas separation, liquid accessible damping valve flows between first oil pocket and second oil pocket, and because the piston rod is located first oil pocket in order to occupy certain space, this appearance oil cross section that will lead to first oil pocket is less than the appearance oil cross section of second oil pocket, gaseous through floating the ejecting piston rod of stopper compression liquid that floats, thereby form elasticity shock-absorbing function, the oil pressure of first oil pocket and second oil pocket needs to tend towards the balance, thereby form damping function, especially two-way damping function, realize damping shock attenuation integration with this, a structure is simple, whole occupation space is little.

Further, the other end of the cylinder barrel is provided with an inflation inlet for communicating the air cavity. So, through the inflation inlet, can fill gassing body and adjust elasticity size, solve the inconvenient problem of adjusting of elasticity size.

Furthermore, a pressure limiting valve is arranged on the piston rod and/or the oil piston. When the pressure difference between the first oil chamber and the second oil chamber is overlarge, the pressure limiting valve is opened, the flow rate of liquid between the first oil chamber and the second oil chamber is accelerated, and potential safety hazards caused by overlarge pressure difference are avoided.

Further, the oil piston comprises a main body portion with a mounting cavity, the mounting cavity faces the opening of the piston rod, a protrusion is arranged at the bottom of the mounting cavity, the damping valve comprises a damping oil hole which is formed in the protrusion, the damping oil hole penetrates through the second oil cavity, one end of the piston rod is connected to the main body portion, and an oil guide groove which is communicated with the damping oil hole and the first oil cavity is formed in the piston rod. Therefore, liquid can flow between the first oil chamber and the second oil chamber through the damping oil hole and the oil guide groove, and the damping effect is achieved without additionally arranging parts.

Furthermore, the pressure limiting valve comprises an elastic part, an oil sealing gasket and a pressure limiting oil hole arranged at the bottom of the mounting cavity, the pressure limiting oil hole penetrates through the second oil cavity and is communicated with the oil guide groove, the oil sealing gasket is abutted against the bottom of the mounting cavity under the elastic action of the elastic part and seals the pressure limiting oil hole, and when the pressure difference between the first oil cavity and the second oil cavity is too large, the elastic force of the elastic part is overcome and the oil sealing gasket is pushed open, so that pressure relief is realized.

Furthermore, the pressure limiting oil hole is provided with a plurality of oil holes which are distributed around the periphery of the protrusion, one end of the elastic piece is abutted to the end portion of the piston rod, and the other end of the elastic piece is abutted to the oil sealing gasket.

Furthermore, one end of the piston rod is movably screwed with the main body part so as to adjust the elastic force of the elastic piece.

Further, lead the oil groove including setting up in the cross slot of piston rod terminal surface and setting up in the perpendicular groove of piston rod circumference side, the cross slot switches on mutually with perpendicular groove, and the cross slot towards the installation cavity opening of main part and switch on mutually with the damping oil hole, and perpendicular groove switches on mutually with first oil pocket.

Furthermore, the number of the single-cylinder damping shock absorbers is two, the two single-cylinder damping shock absorbers are vertically arranged and are respectively located on two sides of the motor wheel, one end of each single-cylinder damping shock absorber is fixedly connected to a wheel shaft of the motor wheel, and the other end of each single-cylinder damping shock absorber is fixedly connected to the frame. Therefore, the single-cylinder damping shock absorber is directly used as a supporting component, the functions of bilateral shock absorption and bearing are achieved, and the number of parts is further reduced.

Further, the radius R1 of the piston rod is between 10mm and 15mm, and the relationship between the inner radius R2 of the cylinder and the radius R1 of the piston rod is: R2/R1 is more than or equal to 1.1 and less than or equal to 2.

To sum up, the utility model provides a damping and shock absorption integrated monocycle has following technological effect:

in the wheelbarrow, oil and gas are separated through the floating plug, gas compresses liquid through the floating plug to eject out the piston rod, an elastic damping function is formed, meanwhile, a bidirectional damping function is formed through the effect of a damping valve for communicating the first oil cavity and the second oil cavity, the damping and the damping are integrated, the structure is simple, and the whole occupied space is small; on the other hand, the air cavity can be inflated and deflated through the inflation inlet so as to adjust the elasticity of the air cavity, and adapt to riders with different weights and various riding environments. The utility model discloses an other beneficial effects will be exhibited in embodiment.

Drawings

Fig. 1 is a schematic cross-sectional view of a wheelbarrow according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the two single-tube damping shock absorbers in connection with the cross beam according to the embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of a single-tube damping shock absorber according to an embodiment of the present invention;

FIG. 4 is an enlarged view of part A of FIG. 3;

fig. 5 is a schematic structural diagram of a piston rod according to an embodiment of the present invention.

Wherein the reference numerals have the following meanings:

1. a motor wheel; 2. a frame; 21. a foot pedal; 22. a guide post; 221. a limiting groove; 3. a single tube damping shock absorber; 31. a cylinder barrel; 311. a first oil chamber; 312. a second oil chamber; 313. an air cavity; 32. a piston rod; 321. an oil guide groove; 3211. a transverse groove; 3212. a vertical slot; 33. an oil piston; 331. a mounting cavity; 332. a main body portion; 333. a protrusion; 334. a damping oil hole; 335. a pressure limiting oil hole; 34. a floating plug; 35. a damping valve; 36. a pressure limiting valve; 361. an elastic member; 362. an oil seal gasket; 37. a first mounting seat; 38. a second mounting seat; 381. a limiting block; 39. an inflation inlet; 4. a cross member.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do 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.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1, the utility model discloses a damping and shock absorption integrated wheelbarrow, include: the electric motor wheel 1, the frame 2 and the monotube damping shock absorber 3. Wherein, the frame 2 is movably connected up and down relative to the motor wheel 1, and two sides of the frame 2 are respectively provided with a pedal 21; the monotubular damping shock absorber 3 is connected between the motor wheel 1 and the frame 2, and provides shock absorption and damping for the up-and-down movement of the frame 2.

With reference to fig. 2 and 3, it is important that the monotubular damping shock absorber 3 includes a cylinder 31, a piston rod 32, an oil piston 33 and a floating plug 34, the oil piston 33 and the floating plug 34 are sequentially slidably disposed inside the cylinder 31 to sequentially divide a cavity inside the cylinder 31 into a first oil chamber 311, a second oil chamber 312 and an air chamber 313, the piston rod 32 penetrates the first oil chamber 311 from one end of the cylinder 31 and is connected with the oil piston 33, and a damping valve 35 for communicating the first oil chamber 311 and the second oil chamber 312 is disposed on the piston rod 32 and/or the oil piston 33.

Referring to the direction shown in fig. 3, in the above-described mono-tube damping shock absorber 3, gas is sealed in the gas chamber 313, and liquid (hydraulic oil) is sealed in the first oil chamber 311 and the second oil chamber 312, and flows between the first oil chamber 311 and the second oil chamber 312, particularly through the damping valve 35, which will result in the oil-containing cross section of the first oil chamber 311 being smaller than the oil-containing cross section of the second oil chamber 312, since the piston rod 32 is located in the first oil chamber 311 to occupy a certain space. Under the condition of not riding, the air pressure in the air cavity 313 acts on the floating plug 34, the floating plug 34 slides upwards to compress liquid, and due to the compression effect of the floating plug 34 and the difference of the oil containing cross sections of the two oil cavities 311 and 312, the liquid in the first oil cavity 311 flows to the second oil cavity 312 through the damping valve 35, so that the piston rod 32 is ejected upwards through the oil piston 33 until the oil pressure of the first oil cavity 311, the oil pressure of the second oil cavity 312 and the air pressure of the air cavity 313 are balanced, or the first oil cavity 311 is free of liquid, and the oil pressure of the second oil cavity 312 and the air pressure of the air cavity 313 are balanced; under the riding condition, the gravity or vibration force of a rider acts on the single-cylinder damping shock absorber 3 through the frame 2, the piston rod 32 drives the oil piston 33 to slide downwards, the oil pressure of the second oil chamber 312 is greater than the air pressure of the air chamber 313, the oil pressure of the second oil chamber 312 acts on the floating plug 34, the floating plug 34 slides downwards to compress air, meanwhile, due to the downward sliding of the oil piston 33, the oil containing space of the first oil chamber 311 is enlarged, the oil pressure is reduced, and the liquid in the second oil chamber 312 flows to the first oil chamber 311 through the damping valve 35 until the oil pressure of the first oil chamber 311, the oil pressure of the second oil chamber 312 and the air pressure of the air chamber 313 are balanced.

It should be noted that the sliding direction in the above description is only for convenience of understanding the description of the direction of the piston rod 32, the oil piston 33 and the floating plug 34 during the relative sliding with the cylinder 31, and does not represent a limitation on the sliding direction. For example, when the riding wheelbarrow with an uneven road surface is shocked, the motor wheel 1 actually moves upwards or downwards, namely, the cylinder 31 can move relatively when the riding wheelbarrow actually shakes; for another example, the single-tube damping shock absorber 3 may be installed in a reverse direction.

It will be understood that, regardless of whether the piston rod 32 is extended or retracted relative to the cylinder 31, since the oil pressures in the first oil chamber 311 and the second oil chamber 312 need to be balanced, the fluid can flow from the first oil chamber 311 to the second oil chamber 312 and also from the second oil chamber 312 to the first oil chamber 311 by the action of the damping valve 35, and therefore, the damping valve 35 performs a two-way damping function in the single-tube damping shock absorber 3.

So, through above-mentioned scheme, through floating stopper 34 with oil-gas separation, gaseous ejecting piston rod 32 of 34 compressed liquid through floating, form elasticity shock-absorbing function, simultaneously, through the effect of the damping valve 35 who switches on first oil pocket 311 and second oil pocket 312, form two-way damping function, with damping function and shock-absorbing function integrated to single-tube damping bumper shock absorber 3 on, realize damping shock attenuation integration, its simple structure, whole occupation space is little.

Referring to fig. 1 and 2, in this embodiment, the number of the mono-tube damping shock absorbers 3 is two, the two mono-tube damping shock absorbers 3 are vertically arranged and are respectively located at two sides of the motor wheel 1, one end of the mono-tube damping shock absorber 3 is fixedly connected to a wheel shaft of the motor wheel 1, and the other end of the mono-tube damping shock absorber 3 is fixedly connected to the frame 2.

Specifically, the upper end of the cylinder 31 is fixedly connected with the first mounting seats 37, the two first mounting seats 37 are fixedly connected through a cross beam 4, the lower end of the cylinder 31 is fixedly connected with the second mounting seat 38, the second mounting seat 38 is fixedly connected with the wheel shaft of the motor wheel 1, the lower end of the piston rod 32 penetrates through the first mounting seats 37 and extends into the cylinder 31, and the upper end of the piston rod 32 is fixedly connected with the frame 2.

Specifically, in order to satisfy the human body load and ensure the damping stroke and the damping stroke within a preferred range, the radius R1 of the piston rod 32 is between 10mm and 15mm, and the relationship between the inner radius R2 of the cylinder 31 and the radius R1 of the piston rod 32 is as follows: R2/R1 is more than or equal to 1.1 and less than or equal to 2. Preferably, the radius R1 of the piston rod 32 is 12.5mm, and the inner radius R2 of the cylinder 31 is 15mm.

In order to facilitate the installation of the pedal 21, two sides of the frame 2 are respectively provided with a guide post 22, the pedal 21 is connected to the lower end of the guide post 22, and the guide post 22 is slidably connected with the first mounting seat 37 and the second mounting seat 38, so that the guide post 22 is prevented from being deformed inwards due to the bearing effect of the first mounting seat 37 and the second mounting seat 38 on the guide post 22.

Meanwhile, in order to avoid the outward deformation of the guide post 22, a limiting structure may be further disposed on the second mounting seat 38, and the limiting structure is used for limiting the outward bending of the guide post 22. Specifically, the guide post 22 is provided with a limiting groove 221 extending along the sliding direction thereof, the second mounting seat 38 is screwed with a limiting block 381, and the limiting block 381 slides relatively along the limiting groove 221, and the guide post 22 is clamped between the limiting block 381 and the second mounting seat 38.

Of course, in other preferred embodiments, the mono-tube damper 3 may also be indirectly connected between the motor wheel 1 and the frame 2. Such as by means of a shock-absorbing connecting rod structure; or a fixed frame is arranged on the motor wheel 1, and the single-cylinder damping shock absorber 3 is connected between the fixed frame and the frame 2. The number of the single-tube damping shock absorbers 3 can also be changed according to requirements, for example, one, three or the like single-tube damping shock absorbers 3 are arranged.

Referring to fig. 2 and 3, in the present embodiment, in order to adjust the elasticity of the mono-tube damping shock absorber 3, preferably, the other end of the cylinder 31 is provided with an inflation port 39 communicating with the air chamber 313, and the air in the air chamber 313 can be inflated and deflated through the inflation port 39, so that the adjustment of the elasticity is realized to adapt to riders with different weights and various riding environments. Specifically, the inflation port 39 is provided on the second mounting seat 38 and is opened toward the outside to facilitate inflation and deflation operations.

Referring to fig. 3 and 4, in particular, the piston rod 32 and/or the oil piston 33 are also provided with a pressure limiting valve 36. Thus, when the pressure difference between the first oil chamber 311 and the second oil chamber 312 is too large, the pressure limiting valve 36 is opened, the flow rate of the liquid between the first oil chamber 311 and the second oil chamber 312 is increased, the potential safety hazard caused by the too large pressure difference is avoided, and the quick balance between the oil pressure of the first oil chamber 311 and the oil pressure of the second oil chamber 312 is realized.

Specifically, the oil piston 33 includes a main body portion 332 having a mounting cavity 331, the mounting cavity 331 opens toward the piston rod 32, a protrusion 333 is disposed at the bottom of the mounting cavity 331, one end of the piston rod 32 is connected to the main body portion 332 and partially located in the mounting cavity 331, an end of the piston rod 32 can abut against the protrusion 333 and can also maintain a gap, and an oil guiding groove 321 is disposed on the piston rod 32, and the oil guiding groove 321 can at least conduct the first oil chamber 311 and can also conduct the mounting cavity 331.

In the present embodiment, referring to fig. 4, the damping valve 35 includes a damping oil hole 334 disposed in the protrusion 333, the damping oil hole 334 penetrates through the second oil chamber 312 and communicates with the oil guide groove 321, so that the liquid may pass through the damping oil hole 334 and the oil guide groove 321 from the second oil chamber 312 to flow to the first oil chamber 311, or the liquid may pass through the oil guide groove 321 and the damping oil hole 334 from the first oil chamber 311 to flow to the second oil chamber 312, to implement the damping function, without additional parts. Preferably, the diameter of the damping oil hole 334 is 0.5mm to 1.5mm, so as to better control the flow rate of the liquid and achieve a more ideal damping effect.

Of course, in other preferred embodiments, the damping oil hole 334 may be disposed on the piston rod 32, in which case, the damping oil hole 334 communicates with the first oil chamber 311, and a groove or a hole communicating the damping oil hole 334 and the second oil chamber 312 is disposed on the oil piston 33; or, the piston rod 32 passes through the oil piston 33, and the damping oil hole 334 is disposed on the piston rod 32 and can directly communicate the first oil chamber 311 and the second oil chamber 312; alternatively, the damping oil hole 334 is provided in the oil piston 33 and directly communicates the first oil chamber 311 and the second oil chamber 312.

Specifically, referring to fig. 5, the oil guide groove 321 includes a transverse groove 3211 disposed on an end surface of the piston rod 32 and a vertical groove 3212 disposed on a circumferential side surface of the piston rod 32, the transverse groove 3211 communicates with the vertical groove 3212, the transverse groove 3211 opens toward the mounting cavity 331 of the main body portion 332 and communicates with the damping oil hole 334, and the vertical groove 3212 communicates with the first oil chamber 311.

In this embodiment, referring to fig. 4, the pressure limiting valve 36 includes an elastic member 361, an oil sealing gasket 362 and a pressure limiting oil hole 335 disposed at the bottom of the mounting cavity 331, the pressure limiting oil hole 335 penetrates through the second oil cavity 312 and is communicated with the oil guiding groove 321, and the oil sealing gasket 362 abuts against the bottom of the mounting cavity 331 under the elastic force of the elastic member 361 and seals the pressure limiting oil hole 335. Thus, when the pressure difference between the first oil chamber 311 and the second oil chamber 312 is too large, the oil seal 362 is pushed open against the elastic force of the elastic member 361, and pressure relief is realized.

It should be noted that the oil seal 362 is located at a side of the pressure limiting oil hole 335 away from the second oil chamber 312, that is, the pressure limiting valve 36 plays a role of one-way pressure relief, and during one-way pressure relief, the liquid in the second oil chamber 312 flows into the first oil chamber 311 through the pressure limiting valve 36. The significance of such setting lies in that when a rider begins to ride the unicycle, due to the action of gravity of a human body, the piston rod 32 drives the oil piston 33 to slide downwards quickly, the gas is compressed through the floating plug 34, the oil pressure of the second oil cavity 312 at the moment is relatively large with the oil pressure of the first oil cavity 311, the liquid can prop open the oil sealing gasket 362, the liquid can flow quickly from the second oil cavity 312 to the first oil cavity 311, the oil pressure of the second oil cavity 312 and the air pressure of the air cavity 313 are balanced quickly, and the stable riding state is quickly achieved.

Specifically, the pressure limiting oil hole 335 is provided with a plurality of protrusions 333 and arranged around the periphery thereof, one end of the elastic member 361 abuts against the end of the piston rod 32, and the other end of the elastic member 361 abuts against the oil seal gasket 362, so that the assembly of the elastic member 361 and the oil seal gasket 362 is facilitated. Specifically, the elastic member 361 is a spring having an inner diameter larger than an outer circumferential diameter of the protrusion 333 so that the elastic member 361 can be relatively fitted over the outer circumference of the protrusion 333; the oil seal 362 is annular, the inner diameter of the oil seal 362 is larger than the outer diameter of the protrusion 333, and the outer diameter of the oil seal 362 is smaller than the inner diameter of the mounting cavity 331.

Preferably, one end of the piston rod 32 is movably screwed to the main body 332, so that the elastic force of the elastic member 361 can be adjusted by adjusting the screwing length of the piston rod 32 and the main body 332 to compress the elastic member 361.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by combining the above technical features at will. It should be noted that modifications and embellishments may be made by those skilled in the art without departing from the principles of the present invention and are considered within the scope of the invention.

Claims (10)

1. The utility model provides a wheel barrow of damping integration which characterized in that includes:

a motor wheel;

the frame is movably connected up and down relative to the motor wheel, and two sides of the frame are respectively provided with a pedal plate;

the single-cylinder damping shock absorber is connected between the motor wheel and the frame and provides shock absorption and damping for the up-and-down movement of the frame;

the single-cylinder damping shock absorber comprises a cylinder barrel, a piston rod, an oil piston and a floating plug, wherein the oil piston and the floating plug are sequentially arranged in the cylinder barrel in a sliding mode to sequentially divide a cavity in the cylinder barrel into a first oil cavity, a second oil cavity and an air cavity, the piston rod penetrates through the first oil cavity and is connected with the oil piston through one end of the cylinder barrel, and a damping valve used for conducting the first oil cavity and the second oil cavity is arranged on the piston rod and/or the oil piston.

2. The damping and shock-absorbing integrated wheelbarrow according to claim 1, wherein the other end of the cylinder barrel is provided with an inflation inlet which is communicated with the air cavity.

3. The damping and shock absorbing integrated wheelbarrow according to claim 1, wherein the piston rod and/or the oil piston is/are further provided with a pressure limiting valve.

4. The unicycle with integrated damping and shock absorbing functions as claimed in claim 3, wherein the oil piston comprises a main body part with a mounting cavity facing the opening of the piston rod, a protrusion is disposed at the bottom of the mounting cavity, the damping valve comprises a damping oil hole disposed in the protrusion, the damping oil hole penetrates through the second oil cavity, one end of the piston rod is connected to the main body part, and an oil guiding groove for communicating the damping oil hole and the first oil cavity is disposed on the piston rod.

5. The damping and shock-absorbing integrated wheelbarrow according to claim 4, wherein the pressure limiting valve comprises an elastic member, an oil sealing gasket and a pressure limiting oil hole arranged at the bottom of the mounting cavity, the pressure limiting oil hole penetrates through the second oil cavity and is communicated with the oil guide groove, and the oil sealing gasket is abutted against the bottom of the mounting cavity under the elastic force of the elastic member and seals the pressure limiting oil hole.

6. The damping and shock-absorbing integrated wheelbarrow according to claim 5, wherein the pressure-limiting oil hole is provided with a plurality of oil holes and is arranged around the periphery of the protrusion, one end of the elastic member abuts against the end of the piston rod, and the other end of the elastic member abuts against the oil seal gasket.

7. The unicycle of claim 6, wherein one end of the piston rod is movably screwed to the main body to adjust the elastic force of the elastic member.

8. The damping and shock-absorbing integrated wheelbarrow according to claim 4, wherein the oil guide groove comprises a transverse groove arranged on the end surface of the piston rod and a vertical groove arranged on the circumferential side surface of the piston rod, the transverse groove is communicated with the vertical groove, the transverse groove faces the mounting cavity opening of the main body part and is communicated with the damping oil hole, and the vertical groove is communicated with the first oil cavity.

9. The damping and shock-absorbing integrated wheelbarrow according to claim 1, wherein two single-cylinder damping shock absorbers are provided, the two single-cylinder damping shock absorbers are vertically arranged and are respectively positioned at two sides of the motor wheel, one end of each single-cylinder damping shock absorber is fixedly connected to a wheel shaft of the motor wheel, and the other end of each single-cylinder damping shock absorber is fixedly connected to the frame.

10. The damping and shock absorbing integrated wheelbarrow according to claim 9, wherein the radius R1 of the piston rod is between 10mm and 15mm, and the relationship between the inner radius R2 of the cylinder barrel and the radius R1 of the piston rod is as follows: R2/R1 is more than or equal to 1.1 and less than or equal to 2.

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