CN106827957B - Movable equipment and travelling gear train thereof - Google Patents
Movable equipment and travelling gear train thereof Download PDFInfo
- Publication number
- CN106827957B CN106827957B CN201710099110.1A CN201710099110A CN106827957B CN 106827957 B CN106827957 B CN 106827957B CN 201710099110 A CN201710099110 A CN 201710099110A CN 106827957 B CN106827957 B CN 106827957B
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- clamping
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- wheel
- clamping piece
- pin
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0002—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0028—Construction of wheels; methods of assembling on axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0078—Castors in general; Anti-clogging castors characterised by details of the wheel braking mechanism
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
- Rehabilitation Tools (AREA)
Abstract
The invention discloses movable equipment and a traveling gear train thereof, wherein the movable equipment comprises a wheel sheet, a fixed shaft for fixing a traveling wheel system to a movable equipment body, and a locking device for braking the wheel sheet, wherein the locking device comprises a first clamping piece rotating along with the wheel sheet and a second clamping piece moving towards a direction approaching or far away from the first clamping piece under the drive of a driving piece; one of the first clamping piece and the second clamping piece is provided with a rigid clamping block, and the other one is provided with a clamping groove; when the two clamping pieces are at the near-limit position, the rigid clamping blocks are clamped in the clamping grooves and prevent the wheel piece from rotating, and when the two clamping pieces are at the far-limit position, the rigid clamping blocks are separated from the clamping grooves. The walking wheel train realizes locking in a mode of clamping the rigid structure, changes the traditional mode of realizing locking by friction, and has reliable locking and improved locking safety.
Description
Technical Field
The invention relates to the technical field of wheel application, in particular to a travelling gear train for movable equipment. The invention also relates to a movable device comprising the travelling gear train.
Background
With the increasing standard of living, the requirements of people on the safety quality of movable equipment such as strollers, wheelchairs and the like are gradually increased. When the baby carriage or the wheelchair needs to stay on a road surface with a gradient, the road wheels of the baby carriage or the wheelchair need to be locked to be static, in the prior art, the locking device is mostly arranged on the friction plate at the position of the road wheels, and when braking is needed, the friction plate is stepped down, and locking is realized through larger friction force between the friction plate and the road wheels. However, the mode of realizing locking through friction force is inconvenient to operate, and insufficient strength can be generated in the long-term repeated use process of the friction plate, so that the safety is poor, and safety accidents caused by locking failure are easy to occur.
Therefore, the traveling gear train for the movable equipment is provided, so that the traditional locking mode can be changed, the locking operation difficulty is reduced, and the locking safety is improved, so that the problem to be solved by the person skilled in the art is solved.
Disclosure of Invention
The invention aims to provide a travelling gear train for movable equipment, so that the traditional locking mode can be changed, the locking operation difficulty is reduced, and the locking safety is improved. Another object of the present invention is to provide a mobile device comprising the above travelling train.
The invention provides a travelling gear train for movable equipment, which comprises a wheel sheet and a locking device for braking the wheel sheet; the locking device comprises a first clamping piece rotating along with the wheel piece and a second clamping piece moving towards or away from the first clamping piece under the drive of the driving piece; one of the first clamping piece and the second clamping piece is provided with a rigid clamping block, and the other one is provided with a clamping groove; when the two clamping pieces are at the near-limit position, the rigid clamping blocks are clamped in the clamping grooves and prevent the wheel piece from rotating, and when the two clamping pieces are at the far-limit position, the rigid clamping blocks are separated from the clamping grooves.
Preferably, a first gear is fixedly connected to the wheel sheet, the first clamping piece is a second gear externally meshed with the first gear, and the clamping groove is formed in an inter-tooth groove of the second gear.
Preferably, the driving member comprises a brake cable and a return spring for driving the second clamping member to move towards the direction close to the first clamping member, one end of the brake cable is connected with the wire pulling device, and the other end of the brake cable is connected with the second clamping member and pulls the second clamping member to move towards the direction far away from the first clamping member.
Preferably, the brake cable further comprises a fixed shaft for fixing the travelling wheel system to the movable equipment, a through hole is formed in the fixed shaft, and the brake cable passes through the through hole; the second clamping piece is sleeved outside the fixed shaft in an axially sliding mode, a positioning piece is arranged between the second clamping piece and the fixed shaft, and the second clamping piece slides relative to the fixed shaft in an axial movement stroke limited by the positioning piece.
Preferably, the wheel sheet is rotatably provided with a fixed block, and the fixed block is provided with a mounting hole; the fixed shaft is a stepped shaft, the small-diameter end of the stepped shaft is inserted into the mounting hole in a circumferential direction in a rotatable mode, the end face of the large-diameter end of the stepped shaft abuts against the fixed block, and the second clamping piece is sleeved on the large-diameter end.
Preferably, a radial through bar-shaped hole is formed from the large diameter end of the stepped shaft to the side wall, the positioning piece is a positioning pin, a pin rod of the positioning pin is connected with the second clamping piece, and a pin head of the positioning pin is arranged on the periphery of the stepped shaft through the bar-shaped hole; the outer diameter of the pin head is larger than that of the stepped shaft at the strip-shaped hole, and the brake cable is fixed on the pin rod.
Preferably, the return spring is sleeved on the periphery of the pull wire, one end of the return spring abuts against the positioning pin, the other end of the return spring abuts against the spring seat, and the spring seat is arranged in the through hole.
Preferably, the number of the wheel sheets is two, the first clamping pieces are installed on the two wheel sheets, and the second clamping pieces synchronously clamp the two first clamping pieces; the two first clamping pieces are respectively arranged at two sides of the fixed block.
Preferably, the vibration damper further comprises a vibration damper, wherein the vibration damper comprises a first vibration damper arranged on one side wheel piece and a second vibration damper arranged on the other side wheel piece; the vibration damping device comprises a connecting arm with a bending structure, a baffle, a vibration damping pin and a vibration damping spring; one end of the connecting arm is hinged with the gear shaft of the second gear, the other end of the connecting arm is hinged with one end of the damping pin, which is far away from the baffle, and the bending part of the connecting arm is hinged with the gear shaft of the first gear; the baffle is provided with an accommodating hole, the pin rod section of the damping pin axially movably passes through the accommodating hole, the head of the damping pin is positioned at the outer side of the baffle, and the width of the head of the damping pin is larger than the aperture of the accommodating hole; the head of the vibration reduction pin is provided with a fixed screw; the damping spring is sleeved on the damping pin, one end of the damping spring is propped against the connecting arm, and the other end of the damping spring is propped against the baffle plate.
The invention also provides movable equipment, which comprises a body and a traveling gear train arranged on the body through a fixed shaft, wherein the traveling gear train is the traveling gear train.
The traveling gear train is used for movable equipment and comprises a wheel sheet and a locking device for braking the wheel sheet, wherein the locking device comprises a first clamping piece rotating along with the wheel sheet and a second clamping piece moving towards a direction approaching to or away from the first clamping piece under the drive of a driving piece; one of the first clamping piece and the second clamping piece is provided with a rigid clamping block, and the other one is provided with a clamping groove; when the two clamping pieces are at the near-limit position, the rigid clamping blocks are clamped in the clamping grooves and prevent the wheel piece from rotating, and when the two clamping pieces are at the far-limit position, the rigid clamping blocks are separated from the clamping grooves.
When braking and positioning are needed, the driving piece drives the second clamping piece to move towards the first clamping piece, and when the second clamping piece advances to a near-limit position, the rigid clamping block is clamped in the clamping groove, so that the first clamping piece is prevented from moving in the rotation direction of the wheel piece, and the wheel piece is prevented from rotating, so that clamping is realized; when the brake is required to be released, the driving piece drives the second clamping piece to move in a direction away from the first clamping piece, and when the brake is required to be released, the rigid clamping block is separated from the clamping groove to release the clamping. Therefore, the traveling gear train is locked in a mode of being clamped with a rigid structure, the traditional mode of realizing locking by friction is changed, the locking operation difficulty is reduced by introducing the driving piece, meanwhile, the clamping pieces are rigidly connected, the locking is reliable, the failure caused by abrasion is avoided, and the locking safety is improved.
In a preferred embodiment, the running gear further comprises a vibration damping device, wherein the vibration damping device comprises a first vibration damping device mounted on one side wheel sheet and a second vibration damping device mounted on the other side wheel sheet; the vibration damping device comprises a connecting arm with a bending structure, a baffle, a vibration damping pin and a vibration damping spring; one end of the connecting arm is hinged with the gear shaft of the second gear, the other end of the connecting arm is hinged with one end of the damping pin, which is far away from the baffle, and the bending part of the connecting arm is hinged with the gear shaft of the first gear; the baffle is provided with an accommodating hole, the pin rod section of the damping pin axially movably passes through the accommodating hole, the head of the damping pin is positioned at the outer side of the baffle, and the width of the head of the damping pin is larger than the aperture of the accommodating hole; a fixing screw is arranged at the head part of the vibration reduction pin; the damping spring is sleeved on the damping pin, one end of the damping spring is propped against the connecting arm, and the other end of the damping spring is propped against the baffle plate.
When movable equipment such as a baby carriage or a wheelchair walks on a rugged road, if the road surface position of one side wheel is higher than the road surface position of the other side wheel, the damping spring in the first damping device is compressed relative to the corresponding damping pin, and the damping pin is axially movably arranged on the baffle plate, so that the baffle plate limits the movement of the damping spring and does not limit the movement of the damping pin, the damping pin in the first damping device extends outwards relative to the baffle plate and compresses the damping spring, thereby driving the one side wheel to slowly move upwards, and the horizontal height of the vehicle body is not influenced at the moment, and the occurrence of rolling and jolting of the vehicle body is avoided; and if the road surface position of one side wheel piece is lower than the road surface position of the other side wheel piece, the second vibration reduction device works to slowly move the other side wheel piece upwards to realize vibration reduction.
Like this, through setting up the wheel piece of two side independent operation, and set up vibration damper respectively on two wheel pieces, vibration damper of both sides can independent operation, the vibration damping range of automatic adjustment both sides under the road surface condition of difference to stability and travelling comfort when walking equipment on unsmooth road surface have been improved.
Drawings
FIG. 1 is a schematic view of a single wheel plate in an embodiment of a travelling gear train provided by the invention;
FIG. 2 is a schematic view of a construction of one embodiment of a stationary shaft of the running gear train of FIG. 1;
FIG. 3 is a schematic structural view of an embodiment of a second fastener in the travelling gear train shown in FIG. 1;
FIG. 4 is a schematic view of one embodiment of a connecting arm of the travel gear train of FIG. 1.
Reference numerals illustrate:
1-wheel sheet
2 is a fixed shaft 201-a through hole 21-a small diameter end 22-a large diameter end 221-a strip-shaped hole
31-first clamping piece 32-second clamping piece
4-first gear
41-brake Cable 42-return spring
5-fixed block
61-connecting arm 62-baffle 63-damping pin 64-damping spring
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
As shown in fig. 1 to 4, in one specific embodiment, the travelling gear train provided by the invention is used for movable equipment, and comprises a wheel sheet 1 and a locking device for braking the wheel sheet 1, wherein the locking device comprises a first clamping piece 31 rotating along with the wheel sheet 1 and a second clamping piece 32 moving towards or away from the first clamping piece 31 under the drive of a driving piece; one of the first clamping piece 31 and the second clamping piece 32 is provided with a rigid clamping block, and the other is provided with a clamping groove; when the two clamping pieces are at the near-limit position, the rigid clamping blocks are clamped in the clamping grooves and prevent the wheel piece 1 from rotating, and when the two clamping pieces are at the far-limit position, the rigid clamping blocks are separated from the clamping grooves.
When braking and positioning are needed, the driving piece drives the second clamping piece 32 to move towards the first clamping piece 31, and when the driving piece moves to a near-limit position, the rigid clamping block is clamped in the clamping groove, so that the first clamping piece 31 is prevented from moving in the rotating direction of the wheel piece 1, and the wheel piece 1 is prevented from rotating, so that clamping is realized; when the brake is required to be released, the driving piece drives the second clamping piece 32 to move in a direction away from the first clamping piece 31, and when the brake is required to be released, the rigid clamping block is separated from the clamping groove to release the clamping. Therefore, the traveling gear train is locked in a mode of being clamped with a rigid structure, the traditional mode of realizing locking by friction is changed, the locking operation difficulty is reduced by introducing the driving piece, meanwhile, the clamping pieces are rigidly connected, the locking is reliable, the failure caused by abrasion is avoided, and the locking safety is improved.
The rotation of the first clamping piece 31 along with the wheel piece 1 can be realized in a gear transmission mode, specifically, a first gear 4 is fixedly connected to the wheel piece 1, the first clamping piece 31 is a second gear externally meshed with the first gear 4, and a slot between teeth of the second gear forms the clamping slot; in the normal walking process, the wheel sheet 1 rotates to drive the first gear 4 fixedly connected with the wheel sheet 1 to synchronously rotate, at the moment, the second gear meshed with the first gear 4 is the first clamping piece 31, and the first clamping piece 31 can synchronously rotate along with the wheel sheet 1 in a gear meshing transmission mode; when the locking is needed, the second clamping piece 32 is close to the second gear, a clamping groove is formed in an inter-tooth groove of the second gear, a rigid clamping block is arranged on the second clamping piece 32 and is clamped and fixed in the clamping groove to limit the rotation of the second gear and further limit the rotation of the first gear 4 and the wheel piece 1, and thus the locking is realized.
The first clamping piece 31 rotates along with the wheel piece 1 in a gear transmission mode, so that the structure is compact, the transmission precision is high, and the strength is good; meanwhile, the second gear is made to form the first clamping piece 31, so that the structure is simpler. Alternatively, in order to ensure the fastening strength and further improve the locking reliability, the above-mentioned fastening groove may be formed by a plurality of protruding portions on the end face of the second gear, and the groove between two adjacent protruding portions may be used as the fastening groove.
In theory, the rotation of the first engaging member 31 with respect to the wheel sheet 1 may be realized by other means such as chain transmission, not limited to the gear transmission. Specifically, a driving sprocket is fixedly connected to the wheel sheet 1, the first clamping piece 31 is fixed to a driven sprocket, and the driven sprocket is connected with the driving sprocket through a transmission chain.
In the above embodiment, the driving member includes a brake cable 41 and a return spring 42 for driving the second clamping member 32 to move in a direction approaching the first clamping member 31, one end of the brake cable 41 is connected to the wire pulling device, and the other end of the brake cable is connected to the second clamping member 32 and pulls the second clamping member 32 to move in a direction separating from the first clamping member 31. In the working process, the brake cable 41 is pulled by the cable pulling device, the brake cable 41 drives the second clamping piece 32 to move in the direction away from the first clamping piece 31 until the two clamping pieces are separated and unlocked, and when the acting force of the cable pulling device on the brake cable 41 disappears, the return spring 42 pushes the second clamping piece 32 back to the position locked with the first clamping piece 31. The second clamping piece 32 is driven to move towards the direction close to or far away from the first clamping piece 31 through the return spring 42 and the brake cable 41, and the position of the wire pulling device can be selected according to requirements, so that the operation difficulty is reduced, the operation convenience is improved, and meanwhile, when the external force of the wire pulling device acting on the brake cable 41 disappears, the quick reset can be realized through the return spring 42, and the action sensitivity is improved.
In theory, the driving member is not limited to the combination of the brake cable 41 and the return spring 42; the second clamping piece 32 can be driven to be close to or far away from the first clamping piece 31 through the micro cylinder or the micro cylinder, at the moment, a button can be installed at a handle or other convenient-to-operate position of the walking equipment, and after the micro cylinder or the micro cylinder receives an instruction of the button, corresponding extending or retracting actions are executed so as to drive the second clamping piece 32 to be close to or far away from the first clamping piece 31. The scheme for automatically controlling the movement of the second clamping piece 32 is high in automation degree and convenient to operate, but electric elements such as a control circuit and a sensor are required to be introduced, so that the production cost is high.
Further, the brake cable 41 is inserted into the through hole 201, and the road wheel is fixed on the fixed shaft 2 of the movable equipment, and the through hole 201 is formed in the fixed shaft 2; the second clamping piece 32 is axially slidably sleeved outside the fixed shaft 2, a positioning piece is arranged between the second clamping piece 32 and the fixed shaft 2, and the second clamping piece 32 slides relative to the fixed shaft 2 in an axial movement stroke limited by the positioning piece. In the working process, the brake cable 41 is pulled to drive the second clamping piece 32 to axially slide relative to the fixed shaft 2, and when the second clamping piece 32 slides to the limit position, the second clamping piece 32 stops moving under the limit of the positioning piece, so that the second clamping piece 32 is prevented from moving to be in a position exceeding, and the action stability and reliability of the device are improved.
In order to improve the installation stability of the fixed shaft 2 and not to influence the actions of related parts, a fixed block 5 is rotatably connected to the wheel piece 1, and an installation hole is formed in the fixed block 5; the fixed shaft 2 is a stepped shaft, the small diameter end 21 of the stepped shaft is rotatably inserted into the mounting hole in the circumferential direction, the end face of the large diameter end 22 of the stepped shaft abuts against the fixed block 5, and the second clamping piece 32 is sleeved on the large diameter end 22; the fixed shaft 2 and the fixed block 5 can rotate to realize the clutch of the wheel train within 360 degrees and overcome the angle limitation.
Specifically, a radial through bar-shaped hole 221 is formed from the large diameter end 22 to the side wall of the stepped shaft, the positioning piece is a positioning pin, a pin rod of the positioning pin is connected with the second clamping piece 32, and a pin head of the positioning pin is arranged on the periphery of the stepped shaft through the bar-shaped hole 221; the outer diameter of the pin head is larger than the outer diameter of the stepped shaft at the bar hole 221, and the brake cable 41 is fixed to the pin rod. Thus, after the assembly is completed, the pin rod of the positioning pin is transversely positioned in the axial through hole 201 of the fixed shaft 2, namely, the axis of the positioning pin is perpendicular to the axis of the through hole 201, the pin head of the positioning pin is positioned at the outer side of the fixed shaft 2, and in the moving process of the second clamping piece 32, the brake cable 41 drives the positioning pin to move along the length direction of the strip-shaped hole 221 so as to drive the second clamping piece 32 to move in the direction, and the length range of the strip-shaped hole 221 is the moving stroke of the second clamping piece 32. The limit of the axial movement stroke of the second clamping piece 32 is realized through the matching mode of the positioning pin and the strip-shaped hole 221, the structure is simple, the pin head part of the positioning pin is arranged on the outer side of the fixed shaft 2, the radial positioning function is realized, and the structural stability is higher.
The positioning member is not limited to the positioning pin, and a stopper may be fixedly connected to the large diameter end 22 of the stepped shaft, and when the second locking member 32 moves to the limit position, the stopper abuts against the stopper, and the axial movement stroke of the second locking member 32 is limited by the stopper.
In order to improve the structural rationality and the space utilization, the return spring 42 may be sleeved on the periphery of the pull wire, one end of the return spring 42 abuts against the positioning pin, the other end abuts against a spring seat, and the spring seat is disposed in the through hole 201; during operation, the return spring 42 is compressed in the axial space of the spring seat and the stroke of the positioning pin, and returns automatically after the external force is eliminated. It should be understood that when the brake cable 41 is in the active state, the return spring 42 is in a compressed state, and the running gear is in the unlocked state, and when the brake cable 41 is in the inactive state, the return spring 42 is in a natural state or in a compressed state, and the running gear is in the locked state.
The number of the wheel pieces 1 is specifically two, the first clamping pieces 31 are installed on the two wheel pieces 1, and it should be noted that the connecting arm is not a part on the wheel pieces, the connecting arm is of an independent structure with the wheel pieces, and the second clamping pieces 32 synchronously clamp the two first clamping pieces 31; the two first clamping members 31 are respectively arranged at two sides of the fixed block 5, that is, the number of the wheel plates 1 is two, the two first clamping members 31 are in transmission connection with the wheel plates 1 in one-to-one correspondence, the two first clamping members 31 are synchronously clamped by the second clamping members 32, in the specific embodiment, the second clamping members 32 are of a circular chuck structure, and a plurality of rigid clamping blocks are uniformly arranged in the circumferential direction of the circular chuck structure and are used for being clamped in clamping grooves on the two first clamping members 31 at the same time.
In the specific embodiment, the traveling gear train can be further improved, and the traveling gear train can further comprise a vibration damper, wherein the vibration damper comprises a first vibration damper arranged on one side wheel sheet 1 and a second vibration damper arranged on the other side wheel sheet 1; wherein the vibration damping device comprises a connecting arm 61 with a bending structure, a baffle plate 62, a vibration damping pin 63 and a vibration damping spring 64; connecting shafts are respectively arranged on two sides of the fixed block 5 and are connected with the connecting arms through the connecting shafts; one end of the connecting arm 61 is hinged to the gear shaft of the second gear, the other end of the connecting arm 61 is hinged to one end of the damping pin 63, which is far away from the baffle plate 62, and the bending part of the connecting arm 61 is hinged to the gear shaft of the first gear 4; the baffle plate 62 is provided with a containing hole, the pin rod section of the damping pin 63 axially movably passes through the containing hole, the head of the damping pin 63 is positioned at the outer side of the baffle plate 62, and the width of the head of the damping pin 63 is larger than the aperture of the containing hole; the head of the damping pin 63 should be provided with a fixing member or a fixing screw, so that the installation process is more consistent, the damping spring 64 is sleeved on the damping pin 63, and one end of the damping spring abuts against the connecting arm 61, and the other end abuts against the baffle 62.
When the movable equipment such as a baby carriage or a wheelchair walks on a rugged road, if the road surface position of one side wheel sheet 1 is higher than the road surface position of the other side wheel sheet 1, the damping springs 64 in the first damping device are compressed relative to the corresponding damping pins 63, and the damping pins 63 are axially movably arranged on the baffle plates 62, so that the baffle plates 62 limit the movement of the damping springs and cannot limit the movement of the damping pins 63, the damping pins 63 in the first damping device extend outwards relative to the baffle plates 62 and compress the damping springs, thereby driving the one side wheel sheet 1 to slowly move upwards, and the horizontal height of the vehicle body is not influenced at the moment, so that the occurrence of rolling and jolting of the vehicle body is avoided; on the contrary, if the road surface position of the wheel sheet 1 on one side is lower than the road surface position of the wheel sheet 1 on the other side, the second vibration reduction device works to slowly move up the wheel sheet 1 on the other side to realize vibration reduction.
Like this, through setting up the wheel piece 1 of two side independent operation, and set up vibration damper respectively on two wheel pieces 1, vibration damper of both sides can the independent operation, the vibration damping range of automatic adjustment both sides under the road surface condition of difference to stability and travelling comfort when walking equipment is advanced on unsmooth road surface have been improved. In addition, the vibration damper is connected with the first gear 4 and the second gear by arranging the connecting arm 61, so that the structure compactness is improved and the working stability among all the components is ensured on the premise of not influencing the action process.
It should be noted that the ordinal terms such as "first" and "second" are used herein to distinguish different structures with the same name, and are used for descriptive convenience only, and do not indicate a certain order, and should not be construed as limiting.
In addition to the above-mentioned traveling gear train, the present invention further provides a movable device including the traveling gear train, where the movable device may be a traveling auxiliary device such as a stroller or a wheelchair, and other structures of the related movable devices refer to the prior art and are not described herein.
The above examples are merely preferred embodiments of the present invention, and variations and modifications based on the technical solutions of the present invention should not be excluded from the protection scope of the present invention in this field.
Claims (6)
1. A travelling gear train for a mobile device, comprising a wheel plate (1) and a locking device for braking the wheel plate (1), characterized in that,
the locking device comprises a first clamping piece (31) rotating along with the wheel piece (1) and a second clamping piece (32) moving towards or away from the first clamping piece (31) under the drive of the driving piece;
one of the first clamping piece (31) and the second clamping piece (32) is provided with a rigid clamping block, and the other is provided with a clamping groove; when the two clamping pieces are positioned at the near-limit position, the rigid clamping block is clamped in the clamping groove and prevents the wheel piece (1) from rotating, when the two clamping pieces are positioned at the far-limit position, the rigid clamping block is separated from the clamping groove,
a first gear (4) is fixedly connected on the wheel sheet (1), the first clamping piece (31) is a second gear which is externally meshed with the first gear (4), the inter-tooth grooves of the second gear form the clamping grooves,
the driving piece comprises a brake cable (41) and a return spring (42) for driving the second clamping piece (32) to move towards the direction close to the first clamping piece (31), one end of the brake cable (41) is connected with the wire pulling device, the other end of the brake cable is connected with the second clamping piece (32) and pulls the second clamping piece (32) to move towards the direction far away from the first clamping piece (31),
the brake cable (41) passes through the through hole (201); the second clamping piece (32) is sleeved outside the fixed shaft (2) in an axially sliding way, a positioning piece is arranged between the second clamping piece (32) and the fixed shaft (2), the second clamping piece (32) slides relative to the fixed shaft (2) in an axial movement stroke limited by the positioning piece,
a fixed block (5) is rotatably arranged on the wheel sheet (1), and a mounting hole is formed in the fixed block (5); the fixed shaft (2) is a stepped shaft, a small-diameter end (21) of the stepped shaft is inserted into the mounting hole in a circumferential rotatable mode, the end face of a large-diameter end (22) of the stepped shaft abuts against the fixed block (5), the second clamping piece (32) is sleeved on the large-diameter end (22), and the movable equipment is a baby carriage or a wheelchair.
2. The travelling gear train according to claim 1, wherein a bar-shaped hole (221) penetrating radially is formed from the large diameter end (22) of the stepped shaft to the side wall, the positioning member is a positioning pin, a pin rod of the positioning pin is connected with the second clamping member (32), and a pin head of the positioning pin is arranged on the periphery of the stepped shaft through the bar-shaped hole (221); the outer diameter of the pin head is larger than the outer diameter of the stepped shaft at the strip-shaped hole (221), and the brake cable (41) is fixed to the pin rod.
3. The travelling gear train according to claim 2, wherein the return spring (42) is sleeved on the periphery of the pull wire, one end of the return spring (42) abuts against the positioning pin, the other end of the return spring abuts against a spring seat, and the spring seat is arranged in the through hole (201).
4. The travelling wheel system according to claim 1, wherein the number of the wheel pieces (1) is two, the first clamping pieces (31) are installed on the two wheel pieces (1), and the second clamping pieces (32) synchronously clamp the two first clamping pieces (31); the two first clamping pieces (31) are respectively arranged at two sides of the fixed block (5).
5. The running gear train according to claim 4, further comprising a vibration damping device, the vibration damping device comprising a first vibration damping device mounted on one side wheel piece (1) and a second vibration damping device mounted on the other side wheel piece (1);
the vibration damping device comprises a connecting arm (61) with a bending structure, a baffle plate (62), a vibration damping pin (63) and a vibration damping spring (64);
connecting shafts are respectively arranged on two sides of the fixed block (5), and are connected with the connecting arms through the connecting shafts;
one end of the connecting arm (61) is hinged with a gear shaft of the second gear, the other end of the connecting arm is hinged with one end, far away from the baffle plate (62), of the damping pin (63), and the bending part of the connecting arm (61) is hinged with the gear shaft of the first gear (4);
the baffle plate (62) is provided with a containing hole, the pin rod section of the damping pin (63) axially and movably passes through the containing hole, the head of the damping pin is positioned at the outer side of the baffle plate (62), and the head width of the damping pin (63) is larger than the aperture of the containing hole; the head of the vibration reduction pin (63) is provided with a fixed screw;
the damping spring (64) is sleeved on the damping pin (63) and one end of the damping spring is abutted against the connecting arm (61), and the other end of the damping spring is abutted against the baffle plate (62).
6. A mobile device comprising a body and a travelling train mounted to the body by means of a fixed shaft (2), characterized in that the travelling train is a travelling train according to any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710099110.1A CN106827957B (en) | 2017-02-23 | 2017-02-23 | Movable equipment and travelling gear train thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710099110.1A CN106827957B (en) | 2017-02-23 | 2017-02-23 | Movable equipment and travelling gear train thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106827957A CN106827957A (en) | 2017-06-13 |
| CN106827957B true CN106827957B (en) | 2023-09-22 |
Family
ID=59133125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710099110.1A Active CN106827957B (en) | 2017-02-23 | 2017-02-23 | Movable equipment and travelling gear train thereof |
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| CN204249726U (en) * | 2014-11-12 | 2015-04-08 | 中山市诺贝五金制品有限公司 | A kind of friction braking formula castor |
| CN104972832A (en) * | 2015-08-05 | 2015-10-14 | 丁怡 | Traction braking universal wheel |
| JP2016074421A (en) * | 2014-10-08 | 2016-05-12 | 明門香港股▲フェン▼有限公司 | Brake gear and stroller |
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| CN205632619U (en) * | 2015-10-15 | 2016-10-12 | 上海童歌母婴用品有限公司 | Baby carriage brake device |
| CN205813829U (en) * | 2016-07-14 | 2016-12-21 | 温州群悦箱包配件有限公司 | There is the luggage case universal wheel of locking device |
| CN205890405U (en) * | 2016-06-23 | 2017-01-18 | 南通威得塑料制品有限公司 | Casters's novel locking mechanism |
| CN206528271U (en) * | 2017-02-23 | 2017-09-29 | 北京程程商贸有限公司 | A kind of movable equipment and its walking wheel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201082659Y (en) * | 2007-07-24 | 2008-07-09 | 颜丽兰 | Modified wheel body structure |
| DE102008050946A1 (en) * | 2008-10-10 | 2010-04-15 | J. & A. Sättele GmbH | Brake system for manually moving small vehicle, particularly wheelchair or stroller, has bolt blocking device to block movement of stop bolt in direction of stop bolt blocking element during driving mode of small vehicle |
| CN104108283A (en) * | 2014-05-27 | 2014-10-22 | 太仓兴锋脚轮有限公司 | Castor with braking function |
| CN203986537U (en) * | 2014-08-29 | 2014-12-10 | 覃利超 | A kind of brake wheel braking mechanism of luggage case |
| JP2016074421A (en) * | 2014-10-08 | 2016-05-12 | 明門香港股▲フェン▼有限公司 | Brake gear and stroller |
| CN204249726U (en) * | 2014-11-12 | 2015-04-08 | 中山市诺贝五金制品有限公司 | A kind of friction braking formula castor |
| CN104972832A (en) * | 2015-08-05 | 2015-10-14 | 丁怡 | Traction braking universal wheel |
| CN205632619U (en) * | 2015-10-15 | 2016-10-12 | 上海童歌母婴用品有限公司 | Baby carriage brake device |
| CN105691107A (en) * | 2016-04-22 | 2016-06-22 | 南京工业职业技术学院 | Universal wheel with self-locking function |
| CN205890405U (en) * | 2016-06-23 | 2017-01-18 | 南通威得塑料制品有限公司 | Casters's novel locking mechanism |
| CN205813829U (en) * | 2016-07-14 | 2016-12-21 | 温州群悦箱包配件有限公司 | There is the luggage case universal wheel of locking device |
| CN206528271U (en) * | 2017-02-23 | 2017-09-29 | 北京程程商贸有限公司 | A kind of movable equipment and its walking wheel |
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| Publication number | Publication date |
|---|---|
| CN106827957A (en) | 2017-06-13 |
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