CN210251193U

CN210251193U - Carbon-free trolley based on cylindrical cam pair

Info

Publication number: CN210251193U
Application number: CN201920575786.8U
Authority: CN
Inventors: 李�昊; 陈雪辉; 王一珉; 袁升; 胡元涛; 李正
Original assignee: Anhui Jianzhu University
Current assignee: Anhui Jianzhu University
Priority date: 2019-04-25
Filing date: 2019-04-25
Publication date: 2020-04-07
Anticipated expiration: 2029-04-25

Abstract

The utility model discloses a carbon-free dolly based on cylindrical cam is vice. The carbon-free trolley based on the cylindrical cam pair comprises an operation mechanism, a kinetic energy output mechanism, a kinetic energy conversion mechanism and a steering mechanism. The kinetic energy conversion mechanism converts the gravitational potential energy of the falling heavy object into the kinetic energy of the travelling trolley, and drives the trolley to advance. The steering mechanism comprises a cylindrical shaft body, a cam pair nut, a guide key, a U-shaped rod and a connecting rod. Two thread grooves with the same pitch and opposite rotation directions are formed in the side wall of the cylindrical shaft body, the end parts of the two thread grooves are connected through a curve groove, and the curve groove and the thread grooves form a closed groove body. The utility model discloses a rotation of cylinder axis body for reciprocating motion is to cam pair nut and U type pole along cylinder axis body place straight line, and under the effect of connecting rod, the barrier is dodged in the leading wheel swing. Through adopting a round of initiative, a round of driven, and the disalignment of two-wheeled structural style, both avoided the driven wheel to produce the motion of action wheel and interfered, realized accurate differential again.

Description

Carbon-free trolley based on cylindrical cam pair

Technical Field

The utility model relates to a dolly by oneself among the technological innovation technical field especially relates to a carbon-free dolly based on cylindrical cam is vice.

Background

With the development of science and technology, the energy consumption is increasing day by day, and coal as nature gives a precious wealth to human beings, and plays a very important role in the development of the human society for a long time. However, due to the huge demand of people for coal, the coal resources are gradually reduced and nearly exhausted. With the improvement of energy conservation and environmental protection consciousness of people, the carbon-free idea is also promoted to the research subject by people. The idea of cleaner, more environmental protection, more energy saving and more efficient is also deep.

Under the background, carbon-free trolleys are gradually becoming mechanical innovation design-type competition in various regions and even nations. In the engineering training comprehensive ability competition, each team member is required to independently design and manufacture a self-propelled trolley with a direction control function, and all actions are required to be completed in the walking process. The energy required is converted from the gravitational potential energy of the falling given weight, and no other source of energy can be used.

The energy required by the trolley to complete all actions in the walking process is only converted from given gravitational potential energy, and no energy from any other source is used. The energy for driving the walking and steering of the bicycle is obtained by converting given gravitational potential energy according to the energy conversion principle. The given gravitational potential energy is made of carbon steel with the mass of 1Kg and the standard weight diameter of 50mm and the height of 65mm, and the height of the weight which can be descended is 400 +/-2 mm. The standard weight is always carried by the trolley and is not allowed to fall off the trolley. The barrier that the dolly set up on can automatic detouring the runway when advancing, the barrier is diameter 20mm, high 200 mm's pole to the distance between the barrier is 700 ~ 1300mm, puts along place central line equidistance. The design purpose requirement of the trolley is that given gravitational potential energy, the trolley automatically advances around a pile and has a running distance as far as possible, and the trolley can realize two functions: the conversion of gravitational potential energy and the periodic diversion.

Before the utility model is made, some design methods have appeared in the invention design of the trolley, the purposes of walking and bypassing can be basically completed, but the steering precision is difficult to control, and the steering period adjustability of the trolley is poor.

Disclosure of Invention

The utility model provides a carbon-free trolley based on cylindrical cam pair has overcome the problem that the precision that current carbon-free trolley exists is difficult to the accuse.

The utility model discloses a following technical scheme realizes: a carbon-free trolley based on a cylindrical cam pair comprises an operation mechanism, a kinetic energy conversion mechanism, a kinetic energy output mechanism, a steering mechanism and a fine adjustment mechanism.

The running mechanism comprises a bottom plate, two vertical plates, a driving wheel, a driven wheel, a rotating rod and a guide wheel; the two vertical plates are fixedly arranged on two opposite surfaces of the bottom plate; the driving wheel and the driven wheel are respectively and rotatably arranged on the two vertical plates; the rotating rod is vertically and rotatably inserted on the bottom plate; the guide wheel is fixedly arranged on the rotating rod.

The kinetic energy conversion mechanism comprises a plurality of positioning rods, a winding wheel, a driving wheel shaft, a large gear and a small gear; the positioning rods are fixedly arranged on the bottom plate in an annular array. The reel is fixedly installed in a cylindrical space defined by the positioning rods. The driving wheel shaft is vertically and rotatably arranged between the two vertical plates; the bull gear is fixedly sleeved on the driving wheel shaft. The pinion is rotatably installed on the vertical plate on one side of the driving wheel and meshed with the gearwheel. The rotation installation between the driving wheel and the vertical plate is realized through the driving wheel shaft.

The kinetic energy output mechanism comprises a weight and a string; the weight is movably arranged in a cylindrical space defined by a plurality of positioning rods; one end of the string is connected with the weight, and the other end of the string bypasses the winding wheel to be connected with the driving wheel shaft. The weight is a 1kg standard weight, and the diameter of an inscribed circle connected with the side surfaces of the positioning rods is equal to that of the weight. The kinetic energy conversion mechanism converts gravitational potential energy generated by falling of the heavy object into kinetic energy to drive the trolley to move.

The steering mechanism comprises a cylindrical shaft body, a cam pair nut, a guide key, a U-shaped rod and a connecting rod; the cylindrical shaft body is rotatably arranged between the two vertical plates, two thread grooves with the same pitch and opposite rotation directions are formed in the side wall of the cylindrical shaft body, the end parts of the two thread grooves are connected through a curve groove, and the curve groove and the thread grooves form a closed groove body; the cam pair nut is sleeved on the cylindrical shaft body, a through hole for the cylindrical shaft body to pass through is formed in the cam pair nut, and a guide key capable of walking in the closed groove body is arranged on the side wall of the through hole; the U-shaped rod is fixedly arranged on the cam pair nut; the connecting rod is fixedly installed on the rotating rod and is connected with the inner wall of the U-shaped rod. When the heavy object falls, the cylindrical shaft body is driven to do unidirectional circular motion through the transmission of the thin rope, the guide key moves along the closed groove body, so that the cam pair nut and the U-shaped rod are driven to do reciprocating linear motion on the cylindrical shaft body, the rotating rod swings under the action of the connecting rod, the swing of the guide wheel is realized, and the trolley walks out of an S-shaped motion track.

As a further improvement of the scheme, the diameter of the driving wheel is larger than that of the driven wheel.

As a further improvement of the scheme, the kinetic energy conversion mechanism further comprises a top plate, a screw rod and a fixing plate. A plurality of round holes for the positioning rods to pass through are formed in the top plate; the screw is fixedly arranged at the top of the positioning rod, and the top plate and the screw are fixed through a locking nut; the fixed plate is fixedly arranged on the top plate. The reel includes bull wheel and steamboat, the bull wheel rotates to be installed on the fixed plate, the steamboat with bull wheel integrated into one piece connects, just the axle center of steamboat with the axle center coincidence of bull wheel. One end of a thin rope is connected with the weight, and the other end of the thin rope passes around the small wheel and is wound on the large wheel and then is fixed on the driving wheel shaft.

As a further improvement of the above solution, the rotational mounting between the reel and the fixed plate is achieved by means of an embedded bearing, the axis of which coincides with the axis of the large wheel.

As a further improvement of the scheme, the fine adjustment mechanism comprises a differential bracket and a differential debugger. The differential bracket is arranged on the bottom plate close to one side of the guide wheel. The differential debugger is mounted on the differential support.

The utility model has the advantages that:

the utility model discloses a set up two thread grooves that the pitch is the same, revolve to opposite on the cylinder axis body, two the thread groove tip all connects through the curve groove, the curve groove with the thread groove constitutes seals the cell body, sets up the guide key that can walk in the sealed cell body on the vice nut of cam. The utility model discloses a rotation of cylinder axis body for reciprocal motion is to cam pair nut and U type pole along cylinder axis body place straight line, and under the effect of connecting rod, dwang reciprocating motion, thereby make the leading wheel swing, avoid the barrier. Through the detailed parameter calculation, adopt a round of initiative, a round of driven, and the disalignment of two-wheeled structural style, can avoid driven wheel to produce the motion of action wheel and interfere. Because the two wheels of the trolley are processed by shaft breakage, when the driving wheel provides advancing power, no matter the driven wheel is positioned on the inner side or the outer side of a curve when turning, the rotating number of turns and the rotating direction of the driven wheel can automatically rotate according to specific conditions, the advancing track cannot be influenced, and the accurate differential is realized.

Drawings

Fig. 1 is a front view of a carbon-free trolley based on a cylindrical cam pair according to an embodiment of the present invention.

Fig. 2 is a top view of the carbonless cart based on a cylindrical cam pair of fig. 1.

Fig. 3 is a left side view of the carbon-free cart based on a cylindrical cam pair of fig. 1.

Fig. 4 is a schematic structural view of a cylindrical shaft body.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The embodiment provides a carbon-free trolley based on a cylindrical cam pair. Referring to fig. 1, 2 and 3, the carbon-free cart based on the cylindrical cam pair includes an operation mechanism, a kinetic energy conversion mechanism, a kinetic energy output mechanism, a steering mechanism and a fine adjustment mechanism.

The running mechanism comprises a bottom plate 22, two vertical plates 17, a driving wheel 32, a driven wheel 11, a rotating rod 38 and a guide wheel 37. The two vertical plates 17 are fixedly arranged on two opposite surfaces of the bottom plate 22. The action wheel 32 with install two from driving wheel 11 difference disalignment rotation on the riser 17, and carry out spacing fixed through flange nut 15, the diameter of action wheel 32 is greater than from the diameter of driving wheel 11. The driving wheel 32 and the driven wheel 11 are arranged on the two vertical plates 17 in a non-coaxial mode, and the driven wheel 11 is in vertical rotating insertion connection with one vertical plate 17 through the driven wheel shaft 19. A driving wheel support 34 is fixed on the bottom plate 22 on the same side with the other vertical plate 17, and the driving wheel 32 is vertically and rotatably inserted with the driving wheel support 34 through the driving shaft 20. The interference of the driven wheel 11 on the movement of the driving wheel 32 is avoided, when the driving wheel 32 provides forward power, no matter the driven wheel 11 is positioned on the inner side or the outer side of a curve when turning, the rotating number and direction of the driven wheel 11 can automatically rotate according to specific conditions, the forward track cannot be influenced, and the accurate differential is realized. The rotating rod 38 is vertically rotatably inserted into the bottom plate 22, and the vertical rotatable insertion of the rotating rod 38 into the bottom plate 22 can be realized by a built-in bearing. The guide wheel 37 is fixedly mounted on the rotating rod 38 and moves synchronously with the rotating rod 38. The guide wheel 37 is fixed on the rotating rod 38 by a nut, and a gasket 16 is additionally arranged between the nut and the guide wheel 37 to play a role in protection.

The kinetic energy conversion mechanism comprises a plurality of positioning rods 6, a top plate 5, a screw rod, a fixing plate, a winding wheel 1, a driving wheel shaft, a large gear 35 and a small gear 31. The locating lever 6 is fixedly mounted on the bottom plate 22 in an annular array manner, a plurality of round holes for the locating lever 6 to pass through are formed in the top plate 5, the screw is fixedly mounted at the top of the locating lever 6, and the top plate 5 and the screw are fixed through a locking nut 4.

The fixing plate 18 is fixedly arranged on the top plate 5, the reel 1 can be rotatably arranged on the fixing plate 18 in various ways, in the embodiment, a shaft sleeve 3 can be arranged on the fixing plate 18, a bearing III 44 is fixed in the shaft sleeve 3, the reel 1 is rotatably sleeved in the bearing III 44, and the limiting and fixing are carried out through a hexagon socket screw 2. Reel 1 includes bull wheel and steamboat, the axle center of embedded bearing with the axle center coincidence of bull wheel, the bull wheel rotates to be installed on fixed plate 18, the steamboat with bull wheel integrated into one piece is connected, and the edge of steamboat constitutes spool 21, just the axle center of steamboat with the axle center coincidence of bull wheel. The driving wheel shaft is vertically and rotatably arranged between the two vertical plates 17, and the driving wheel 32 and the vertical plates 17 are rotatably arranged through the driving wheel shaft. The bull gear 35 is fixedly sleeved on the drive wheel shaft and rotates together with the drive wheel shaft. The pinion 31 is rotatably mounted on the vertical plate 17 on one side of the driving wheel 32 and meshed with the gearwheel 35, and the pinion 31 rotates together with the gearwheel 35.

The kinetic energy output mechanism comprises a weight and a string. The heavy object is movably arranged in a cylindrical space enclosed by a plurality of positioning rods 6. The weight is a 1kg standard weight, and the diameter of an inscribed circle connected with the side surfaces of the positioning rods 6 is equal to that of the weight. One end of the string is connected with the weight, and the other end of the string goes around the winding shaft 21 and is wound on the large wheel. In order to increase the convenience of the movement of the string, in the present embodiment, a pulley bracket 43 is fixed to the top plate 5, a pulley 42 is rotatably mounted on the pulley bracket 43, and one end of the string is passed through the pulley 42 from a large wheel and then fixed to the drive wheel shaft.

When the weight falls from the eminence, be free fall motion in the cylindrical space that is enclosed by a plurality of locating levers 6, the setting of locating lever 6 has restricted the motion of weight on the horizontal direction, has avoided the weight to cause the condition emergence of dolly movement track and established orbit deflection because of horizontal migration. The weight drives one end of the thin rope to fall, the small wheel of the winding wheel 1 rotates to drive the large wheel of the winding wheel 1 to rotate, the thin rope is wound on the large wheel and is loosened around the thin rope arranged on the driving wheel shaft, the driving wheel shaft rotates forwards in a single direction, the driving wheel 32 fixed on the driving wheel shaft rotates, and the trolley is driven to move forwards.

The steering mechanism comprises a cylindrical shaft body 9, a cam pair nut 8, a guide key 45, a U-shaped rod 30 and a connecting rod 29. Two supports 10 are fixed on the tops of the two vertical plates 17, and a cylindrical shaft body 9 is rotatably arranged between the two supports 10. The rotational mounting of the cylindrical shaft body 9 on the riser 17 can be varied and, in the exemplary embodiment, can be realized by means of bearings. There are many ways to mount the pinion 31 on the riser 17, and in this embodiment, the pinion 31 is fixedly sleeved on the cylindrical shaft 9, and the rotation of the pinion 31 drives the cylindrical shaft 9 to rotate.

When the weight falls from a high place, under the traction action of the string, the driving wheel shaft rotates, the large gear 35 on the driving wheel shaft rotates and drives the small gear 31 to rotate, and under the rotation action of the small gear 31, the cylindrical shaft body 9 rotates. Referring to fig. 4, two thread grooves 46 with the same pitch and opposite rotation directions are formed on the side wall of the cylindrical shaft body 9, the end portions of the two thread grooves 46 are connected through a curved groove, and the curved groove and the thread grooves 46 form a closed groove body. The cam pair nut 8 is sleeved on the cylindrical shaft body 9, a through hole for the cylindrical shaft body 9 to pass through is formed in the cam pair nut 8, and a guide key 45 capable of walking in the closed groove body is arranged on the side wall of the through hole. In order to facilitate the taking out of the guide key 45, a through hole is formed in the cam pair nut 8, a stud 33 is connected to the through hole in a threaded mode, and the top of the stud 33 is integrally connected with a block body 7 in a forming mode. The block body 7 is held and rotated, and the stud 33 is screwed off, so that the guide key 45 is convenient to take out, and the guide key 45 is convenient to replace in time. The U-shaped rod 30 is fixedly mounted on the cam pair nut 8, and in order to enhance the mounting stability of the U-shaped rod 30 on the cam pair nut 8, in the embodiment, a sliding rod 12 is fixed between the two brackets 10. A fixed block 13 is fixed on the U-shaped rod 30, the fixed block 13 is sleeved on the sliding rod 12, and the fixed block 13 is rotatably connected with the sliding rod 12 through a bearing I14. One end of the connecting rod 29 is fixedly mounted on the rotating rod 38, and the other end of the connecting rod 29 is fixedly connected with a vertical rod 41. The vertical rod 41 is connected with the inner wall of the U-shaped rod 30.

According to the analysis, the cylindrical shaft body 9 can rotate along with the falling of the weights, the guide key 45 on the cylindrical shaft body 9 can move in the closed groove body, and the cam pair nut 8 can do reciprocating linear motion along the linear direction of the cylindrical shaft body 9 according to the principle of screw rod motion. The connecting rod 29 is connected with the inner wall of the U-shaped rod 30, and when the cam pair nut 8 makes reciprocating linear motion, the U-shaped rod 30 also makes reciprocating linear motion. The link 29 is driven by the U-shaped lever 30 to rotate back and forth around the rotating lever, which drives the guide wheel to swing back and forth, thereby allowing the cart to move out of the S-shaped path and avoid obstacles.

The fine adjustment mechanism comprises a differential bracket 25 and a differential debugger 23. The differential carrier 25 is mounted on the base plate 22 on the side adjacent to the guide wheel 37. The guide wheels 37 are mounted on the base plate 22 in a variety of ways, and in this embodiment, the guide wheel brackets 27 are fixed to the base plate 22. In order to enhance the fixing stability of the guide wheel bracket 27 on the bottom plate 22, an auxiliary fixing frame 26 is additionally arranged to perform auxiliary fixing on the guide wheel bracket 27. The differential debugger 23 is mounted on the differential bracket 25 and is limited and fixed by a lock nut 24. The rotating rod 38 penetrates through the guide wheel bracket 27, and the rotating rod 38 is rotatably connected with the guide wheel bracket 27 through the second bearing 28. The differential debugger 23 is used to measure the relative position of the guide wheel 37 on the base plate 22 so that the position of the guide wheel 37 is adjusted by moving the rotating lever 38. In order to facilitate the installation of the guide wheel 37 on the rotating rod 38, in this embodiment, a transverse plate 36 is additionally arranged at the bottom of the rotating rod 38, two fixing strips are fixed at opposite sides of the bottom of the transverse plate 36, a transverse shaft 39 is vertically inserted between the two fixing strips in a rotating manner, and the guide wheel 37 is movably sleeved on the transverse shaft 39. A spring 40 is additionally arranged between the transverse plate 36 and the connecting rod 29 to play a role of buffering. The player can choose to set the guide wheel 37 on the proper position of the bottom plate 22 through detailed parameter calculation according to the design situation of the track obstacle, so as to complete the competition, and the design is reasonable.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A carbon-free cart based on a cylindrical cam set, comprising:

the running mechanism comprises a bottom plate, two vertical plates, a driving wheel, a driven wheel, a rotating rod and a guide wheel; the two vertical plates are fixedly arranged on two opposite surfaces of the bottom plate; the driving wheel and the driven wheel are respectively and rotatably arranged on the two vertical plates; the rotating rod is vertically and rotatably inserted on the bottom plate; the guide wheel is fixedly arranged on the rotating rod;

the kinetic energy conversion mechanism comprises a plurality of positioning rods, a winding wheel, a driving wheel shaft, a large gear and a small gear; the positioning rods are fixedly arranged on the bottom plate in an annular array; the reel is fixedly arranged in a cylindrical space defined by a plurality of positioning rods; the driving wheel shaft is vertically and rotatably arranged between the two vertical plates; the large gear is fixedly sleeved on the driving wheel shaft; the small gear is rotatably arranged on the vertical plate on one side of the driving wheel and meshed with the large gear;

the kinetic energy output mechanism comprises a weight and a string; the weight is movably arranged in a cylindrical space defined by a plurality of positioning rods; one end of the thin rope is connected with the weight, and the other end of the thin rope bypasses the winding wheel to be connected with the driving wheel shaft;

it is characterized in that the carbon-free trolley further comprises:

the steering mechanism comprises a cylindrical shaft body, a cam pair nut, a guide key, a U-shaped rod and a connecting rod; the cylindrical shaft body is rotatably arranged between the two vertical plates, two thread grooves with the same pitch and opposite rotation directions are formed in the side wall of the cylindrical shaft body, the end parts of the two thread grooves are connected through a curve groove, and the curve groove and the thread grooves form a closed groove body; the cam pair nut is sleeved on the cylindrical shaft body, a through hole for the cylindrical shaft body to pass through is formed in the cam pair nut, and a guide key capable of walking in the closed groove body is arranged on the side wall of the through hole; the U-shaped rod is fixedly arranged on the cam pair nut; the connecting rod is fixedly installed on the rotating rod and is connected with the inner wall of the U-shaped rod.

2. The carbon-free cart based on a cylindrical cam pair of claim 1, wherein the diameter of the driving wheel is larger than the diameter of the driven wheel.

3. The carbon-free trolley based on the cylindrical cam pair as claimed in claim 1, wherein the rotational mounting between the drive wheel and the riser is achieved through the drive wheel axle.

4. The carbon-free trolley based on the cylindrical cam pair as claimed in claim 1, wherein the weight is a 1kg standard weight, and the diameter of an inscribed circle connected with the side surfaces of the plurality of positioning rods is equal to the diameter of the weight.

5. The carbon-free trolley based on the cylindrical cam pair as claimed in claim 1, wherein the kinetic energy conversion mechanism further comprises a top plate, a screw rod and a fixing plate;

a plurality of round holes for the positioning rods to pass through are formed in the top plate; the screw is fixedly arranged at the top of the positioning rod, and the top plate and the screw are fixed through a locking nut; the fixed plate is fixedly arranged on the top plate.

6. The carbon-free trolley based on the cylindrical cam pair as claimed in claim 5, wherein the reel is rotatably mounted on the fixed plate.

7. The carbon-free trolley based on the cylindrical cam pair as claimed in claim 6, wherein the reel comprises a large wheel and a small wheel, the large wheel is rotatably mounted on the fixed plate, the small wheel is integrally connected with the large wheel, and the axis of the small wheel is coincident with the axis of the large wheel.

8. The carbonless cart based on a cylindrical cam pair as claimed in claim 7, wherein the rotational mounting between the reel and the fixed plate is achieved by an inline bearing whose axis coincides with that of the large wheel.

9. The carbon-free trolley based on the cylindrical cam pair as claimed in claim 7, wherein one end of the string is connected with the weight, and the other end of the string is wound around the small wheel and the large wheel and then fixed on the driving wheel shaft.

10. The carbon-free cart based on a cylindrical cam pair of claim 1, further comprising:

the fine adjustment mechanism comprises a differential bracket and a differential debugger; the differential bracket is arranged on the bottom plate close to one side of the guide wheel; the differential debugger is mounted on the differential support.