CN111731036A

CN111731036A - Damping type truckle

Info

Publication number: CN111731036A
Application number: CN202010798644.5A
Authority: CN
Inventors: 利伟坚
Original assignee: Guangzhou Conghua Xinxing Metal Caster Products Co ltd
Current assignee: Guangzhou Conghua Xinxing Metal Caster Products Co ltd
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2020-10-02

Abstract

The invention relates to the technical field of trundles, in particular to a vibration reduction type trundle which comprises a trundle bracket, wheels arranged at the lower part of the trundle bracket and a mounting structure arranged at the upper part of the trundle bracket and used for connecting bearing equipment, wherein the trundle bracket comprises a bracket body, a vibration reduction frame, a fixed frame, at least one group of springs and a fixed rod, and the vibration reduction frame is of an integrally formed structure; according to the damping caster, the lever principle damping mechanism formed by matching the support body, the damping frame and the spring is utilized, the damping effect is better, the upper end of the spring is pressed downwards through the pressing plate on the damping frame, the structural strength is high, the bearing performance is good, the stability and the durability are better, the occupied space of the structural design in the longitudinal space is smaller, the longitudinal swing space of the damping frame is larger, and the bearing piece is in threaded connection with the lower end of the fixed rod, so that the damping caster is convenient to disassemble and assemble.

Description

Damping type truckle

Technical Field

The invention relates to the technical field of casters, in particular to a vibration reduction type caster.

Background

The truckle is a common mechanical hardware fitting, and it is extensively be applicable to the bottom that bears equipment (like furniture, shallow, machining equipment, medical instrument) for conveniently bear the removal of equipment, when the truckle passes through some unevenness's ground, can produce great vibration, not only can influence and bear equipment and use experience, can exert an influence to the life-span of truckle moreover. At present, some current truckles also have the damping function, but generally directly carry out the damping through the spring bearing, and the damping effect of this kind of damping mode is not good, because the direct bearing of spring, is higher to the requirement of spring moreover, and is also great to the loss of spring moreover, and the damping function inefficacy easily.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide the vibration reduction type caster, which utilizes a vibration reduction mechanism of a lever principle formed by matching a support body, a vibration reduction frame and a spring, has good vibration reduction effect, has smaller requirements and loss on the spring, has more stable and durable integral structure and is beneficial to prolonging the service life of the caster.

The task of the invention is realized by the following technical scheme:

a vibration reduction type caster comprises a caster bracket, wheels arranged at the lower part of the caster bracket and a mounting structure arranged at the upper part of the caster bracket and used for connecting bearing equipment, wherein the caster bracket comprises a bracket body, a vibration reduction frame, a fixing frame, at least one group of springs and fixing rods; the support body is the integrated into one piece structure, including two vertical outer panels that set up side by side and the roof of two outer panels upper ends of transverse connection, two outer panels set up in two inner panel outsides, and the rear portion lower extreme of each outer panel is articulated through the hinge with corresponding inner panel respectively, the hinge sets up and the hinge is located the place ahead of shaft with the parallel interval of shaft, two outer panels of horizontal fixed connection of mount just are located between roof and the clamp plate, the dead lever passes the through-hole that sets up on the clamp plate, the mount is connected to the upper end of dead lever, lower extreme threaded connection supporting member, the spring housing is outside the dead lever that corresponds, and the upper end and the lower extreme of spring butt clamp plate and supporting member respectively.

Preferably, the support member is a nut, or the support member is a combination of a nut and a supporting plate.

Preferably, the both ends of mount are equipped with the connecting portion of buckling downwards respectively, two connecting portions respectively with two the outer panel inner wall pastes and passes through bolt or rivet fixed connection, two of damping frame the inner panel is located between two connecting portions, thereby makes the mount can carry on spacingly to the damping frame in the left and right directions.

Preferably, a gap is provided between the front part of each of the two inner plates and the corresponding outer plate, and the connecting part is located in the gap between the corresponding inner plate and the corresponding outer plate.

Preferably, the through hole is a long hole arranged along the front-back direction, and the vibration reduction frame can move in the range of the through hole relative to the fixed rod.

Preferably, the upper end of the fixed rod is fixedly connected with the fixed frame, or the upper end of the fixed rod is fixedly provided with an upper end head, and the fixed rod penetrates through a through hole in the fixed frame and is hung on the fixed frame through the upper end head.

Preferably, the mounting structure is connected with the support body through a rotary disc assembly capable of horizontally rotating, the rotary disc assembly comprises an upper wave disc, a lower wave disc, a plurality of first balls, a plurality of second balls and a fastener, the top plate is positioned between the upper wave disc and the lower wave disc, the top plate is provided with an annular connecting part, the lower surface of the upper wave disc and the upper surface of the annular connecting part are respectively and relatively provided with a first annular groove and a second annular groove, the lower surface of the annular connecting part and the upper surface of the lower wave disc are respectively and relatively provided with a third annular groove and a fourth annular groove, the cross sections of the first annular groove, the second annular groove, the third annular groove and the fourth annular groove are of concave arc structures, the first balls are arranged between the first annular groove and the second annular groove, the second balls are arranged between the third annular groove and the fourth annular groove, the caster support and the rotary disc assembly are rotatably connected through the first balls and the second balls, and the fastener sequentially and vertically penetrates through the through holes in the centers of the upper, the mounting structure is fixedly connected to the wave-up plate or the fastener.

Preferably, the perforation edge of the upper wave plate and the perforation edge of the lower wave plate are in the tight together of hugging closely under the effect of fastener, and the perforation inside wall of upper wave plate and the perforation inside wall of lower wave plate are all hugged closely with the lateral wall of fastener, the second annular with the third annular is in the radial setting of staggering of annular connecting portion, and the second annular is located the outside of third annular in the footpath.

Preferably, the mounting structure is fixedly connected with the top plate, or the mounting structure and the top plate are of an integrally formed structure.

Preferably, the mounting structure is one of a mounting plate, an insertion rod, a screw and an insertion hole.

Compared with the prior art, the vibration reduction type caster has the following advantages: the damping type caster wheel has the advantages that the damping mechanism is formed by matching the support body, the damping frame and the spring, the damping effect is better, the bearing of the spring can be effectively reduced by utilizing the lever principle, the requirement on the spring is lower, the loss of the spring can be reduced, and the damping mechanism is more stable and durable and has longer service life; in addition, the springs in the embodiment are horizontally arranged, so that the height of the whole caster can be reduced, the space is saved, the matching between the vibration reduction frame and the support body is more compact, and the structural design is ingenious; based on the consideration, the pressing plate on the damping frame is downwards pressed against the upper end of the spring, the contact area between the pressing plate and the upper end of the spring is larger, the pressing plate and the damping frame are of an integrally formed structure, the structural strength is high, the force bearing performance of the matching position of the pressing plate and the upper end of the spring is good, the pressing plate is not easy to loosen or damage under the action of repeated instant impact force, and the stability and the durability are better; in addition, the lower end of the spring is supported by the supporting piece in threaded connection with the lower end (free end) of the fixed rod, the instant impact force at the upper end of the spring is filtered and absorbed by the spring, and the impact force transmitted to the lower end of the spring is small, so that the supporting piece can stably support the impact force at the lower end of the spring for a long time and is not easy to loosen; the damping frame is located between two connecting portion of mount, and the inboard plate of damping frame is less with the connecting portion clearance of mount, thereby makes the mount can carry on spacingly to the damping frame in the left and right directions for the damping frame can not appear or rock about as few as possible when vertically rocking, and then avoids or reduces dead lever, spring and leads to the risk of damage because of bearing horizontal torsion, and can increase the structural strength and the durability of whole truckle.

The conception, specific structure and effects of the present invention will be further described in conjunction with the accompanying drawings to fully understand the objects, features and effects of the present invention.

Drawings

FIG. 1 is a schematic view of the vibration damping caster of the present invention;

FIG. 2 is a schematic view of another angular configuration of the vibration damping caster of the present invention;

fig. 3 is an exploded view of the vibration damping type caster of the present invention.

Wherein: the caster wheel support comprises a caster wheel support 1, a support body 11, an outer side plate 111, a top plate 112, a vibration reduction frame 12, an inner side plate 121, a pressing plate 122, a through hole 123, a fixing frame 13, a connecting part 131, a spring 14, a fixing rod 15, a nut 152, a supporting plate 153, an upper end 154, a wheel 2, a wheel shaft 21, a mounting plate 3, a hinge shaft 4, a turntable assembly 5, an upper wave plate 51, a lower wave plate 52, a first ball 53, a second ball 54 and a fastener 55.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the description of the specific embodiments is intended to be illustrative of the invention and is not intended to limit the invention.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element through intervening elements. Also, the terms "upper," "lower," "left," "right," "front," "rear," "lateral," "vertical," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

As shown in fig. 1-3, the vibration damping caster comprises a caster bracket 1, wheels 2 mounted at the lower part of the caster bracket 1, and a mounting plate 3 arranged at the upper part of the caster bracket 1 and used for connecting a load-bearing device, wherein the caster bracket 1 comprises a bracket body 11, a vibration damping frame 12, a fixing frame 13, a group of springs 14 and a fixing rod 15, the vibration damping frame 12 is an integrally formed structure and comprises two inner side plates 121 vertically arranged in parallel and a pressing plate 122 transversely connected with the upper ends of the front parts of the two inner side plates 121, and the rear parts of the two inner side plates 121 are respectively hinged with wheel shafts 21 at the two sides of the wheels; the bracket body 11 is of an integrally formed structure, and comprises two outer side plates 111 vertically arranged in parallel and a top plate 112 transversely connected with the upper ends of the two outer side plates 111, the two outer side plates 111 are arranged on the outer sides of the two inner side plates 121, the lower end of the rear part of each outer side plate 111 is hinged with the corresponding inner side plate 121 through a hinge shaft 4, the hinge shafts 4 are arranged in parallel with the wheel shaft 21 at intervals, the hinge shafts 4 are positioned in front of the wheel shaft 21, a fixing frame 13 is transversely and fixedly connected with the two outer side plates 111 and positioned between the top plate 112 and a pressure plate 122, a fixing rod 15 penetrates through a through hole 123 formed in the pressure plate 122, the upper end of the fixing rod 15 is connected with the fixing frame 13, the lower end of the fixing rod 15 is in threaded connection with a bearing piece, the bearing piece is a combination of a nut 152 and a supporting.

When the vibration-damping caster wheel is used, the wheels 2 jump upwards when running on uneven ground, the vibration-damping frame 12 is driven to deflect anticlockwise around the hinge shaft 4, the pressing plate 122 on the vibration-damping frame 12 downwards compresses the spring 14, and the jumping of the wheels 2 is absorbed and filtered through the spring 14, so that the vibration damping of the caster wheel is realized. Compared with the traditional spring 14 direct bearing type vibration reduction structure, the vibration reduction type caster wheel also has the following advantages: firstly, a lever principle vibration damping mechanism formed by matching the support body 11, the vibration damping frame 12 and the spring 14 is utilized, the vibration damping effect is better, the bearing of the spring 14 can be effectively reduced by utilizing the lever principle, the requirement on the spring 14 is lower, and the loss of the spring 14 can be reduced, so that the vibration damping mechanism in the application is more stable and durable, and the service life is longer; in addition, the springs 14 in the embodiment are horizontally arranged, so that the height of the whole caster can be reduced, the space is saved, the matching between the vibration damping frame 12 and the support body 11 is more compact, and the structural design is ingenious; bearing capacity, stability and durability are better, because when the bearing equipment borne above the caster bracket 1 is heavy, the contact part between the upper end of the spring 14 and the vibration reduction frame 12 can repeatedly generate very large instant impact force due to the jumping generated at different convex and concave running positions of the wheel 2, based on the consideration, the upper end of the spring 14 is downwards pressed by the pressing plate 122 on the vibration reduction frame 12, the contact area between the pressing plate 122 and the upper end of the spring 14 is larger, and the pressing plate 122 and the vibration reduction frame 12 are of an integrally formed structure and have high structural strength, so that the force bearing capacity at the matching part between the pressing plate 122 and the upper end of the spring 14 is good, the pressing plate 122 is not easy to loosen or damage under the action of repeated instant impact force, and the stability and durability are better; in addition, this application supports spring 14 lower extreme through the supporting piece of dead lever 15 lower extreme (free end) threaded connection, because the filtration and the absorption of the instantaneous impact force of spring 14 upper end through spring 14, the impact force of transmitting to spring 14 lower extreme will be less, so the supporting piece can be long-term, the impact force of stable supporting spring 14 lower extreme and difficult not hard up, can adjust the pretightning force of spring 14 and then adjust damping performance through screwing or unscrewing the supporting piece simultaneously, and because dead lever 15 lower extreme (free end) and supporting piece occupy a small space on vertical space, so can make the vertical space of rocking of damping frame 12 great, and supporting piece threaded connection is at the lower extreme (free end) of dead lever 15, be convenient for the dismouting.

The both ends of mount 13 are equipped with the connecting portion 131 of buckling downwards respectively, and two connecting portion 131 paste and pass through bolt or rivet fixed connection with two outer panel 111 inner walls respectively, and two inner panels 121 of damping frame 12 are located between two connecting portion 131 and the clearance is very little (about 1mm probably), thereby make the mount can carry on spacingly to the damping frame in the left and right directions for the damping frame is when vertically rocking, can not appear or rock about as few as possible, and then avoids or reduces dead lever, spring and leads to the risk of damage because of bearing horizontal torsion, and can increase the structural strength and the durability of whole truckle.

A gap is arranged between the front parts of the two inner side plates 121 and the corresponding outer side plate 111, and the connecting part 131 is positioned in the gap between the corresponding inner side plate 121 and the corresponding outer side plate 111; the design can more reasonably utilize the longitudinal space of the caster bracket 1 and increase the longitudinal swing space of the damping frame 12 as much as possible.

The through hole 123 is a long hole arranged in the front-rear direction, and the vibration damping frame 12 can move in the range of the through hole 123 relative to the fixing rod 15, so that the vibration damping frame 12 can freely and smoothly swing.

The upper end of the fixing rod 15 is fixedly provided with an upper end 154, and the fixing rod 15 passes through the through hole on the fixing frame 13 and is hung on the fixing frame 13 through the upper end 154.

The mounting plate 3 is connected with the support body 11 through a turntable assembly 5 capable of horizontally rotating, the turntable assembly 5 comprises an upper wave plate 51, a lower wave plate 52, a plurality of first balls 53, a plurality of second balls 54 and a fastening piece 55, a top plate 112 is positioned between the upper wave plate 51 and the lower wave plate 52, an annular connecting part is arranged on the top plate 112, a first annular groove and a second annular groove are respectively and oppositely arranged on the lower surface of the upper wave plate 51 and the upper surface of the annular connecting part, a third annular groove and a fourth annular groove are respectively and oppositely arranged on the lower surface of the annular connecting part and the upper surface of the lower wave plate 52, the cross sections of the first annular groove, the second annular groove, the third annular groove and the fourth annular groove are all in a concave arc structure, the first balls 53 are arranged between the first annular groove and the second annular groove, the second balls 54 are arranged between the third annular groove and the fourth annular groove, the caster support 1 is rotatably connected with the turntable assembly, the fastener 55 vertically penetrates through the through holes in the centers of the upper wave plate 51 and the lower wave plate 52 in sequence and fastens the upper wave plate 51 and the lower wave plate 52 together, and the mounting plate 3 is fixedly connected to the upper wave plate 51 or the fastener 55.

The perforated edge of the upper wave plate 51 and the perforated edge of the lower wave plate 52 are tightly attached together under the action of the fastener 55, the perforated inner side wall of the upper wave plate 51 and the perforated inner side wall of the lower wave plate 52 are tightly attached to the outer side wall of the fastener 55, the design enables the upper wave plate 51 and the lower wave plate 52 to be mutually supported in the circumferential direction, two ends of the fastener 55 are respectively mutually supported with the upper wave plate 51 and the lower wave plate 52 in the radial direction, and the side walls of the fastener 55 are respectively mutually supported with the upper wave plate 51 and the lower wave plate 52 in the radial direction, so that the turntable assembly 5 of the caster bracket 1 has excellent overall structural strength, stability and bearing capacity. The second ring groove and the third ring groove are arranged in a staggered mode in the radial direction of the annular connecting portion, and the second ring groove is located on the outer side of the third ring groove in the radial direction, so that the thickness of the rotating portion of the caster support 1 can be reduced, and the stability can be improved.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention herein disclosed is not limited to the particular combination of features described above, but also encompasses other arrangements formed by any combination of the above features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. A vibration reduction type caster is characterized by comprising a caster bracket, wheels arranged at the lower part of the caster bracket and a mounting structure arranged at the upper part of the caster bracket and used for connecting bearing equipment, wherein the caster bracket comprises a bracket body, a vibration reduction frame, a fixing frame and at least one group of springs and fixing rods; the support body is the integrated into one piece structure, including two vertical outer panels that set up side by side and the roof of two outer panels upper ends of transverse connection, two outer panels set up in two inner panel outsides, and the rear portion lower extreme of each outer panel is articulated through the hinge with corresponding inner panel respectively, the hinge sets up and the hinge is located the place ahead of shaft with the parallel interval of shaft, two outer panels of horizontal fixed connection of mount just are located between roof and the clamp plate, the dead lever passes the through-hole that sets up on the clamp plate, the mount is connected to the upper end of dead lever, lower extreme threaded connection supporting member, the spring housing is outside the dead lever that corresponds, and the upper end and the lower extreme of spring butt clamp plate and supporting member respectively.

2. A vibration damping caster according to claim 1, wherein said support is a nut or a combination of a nut and a pallet.

3. The vibration damping caster wheel according to claim 1, wherein the two ends of the fixing frame are respectively provided with a connecting portion bent downward, the two connecting portions are respectively attached to the inner walls of the two outer side plates and fixedly connected by bolts or rivets, and the two inner side plates of the vibration damping frame are located between the two connecting portions, so that the fixing frame can limit the vibration damping frame in the left-right direction.

4. A vibration damping caster according to claim 3, wherein a gap is provided between the front portions of the two inner side plates and the corresponding outer side plate, and said connecting portion is located in the gap between the corresponding inner side plate and the outer side plate.

5. The vibration damping caster according to claim 1, wherein said through hole is a long hole formed in a front-rear direction, and said vibration damping frame is movable within the range of the through hole with respect to the fixed link.

6. The vibration damping caster as claimed in claim 1, wherein the fixing rod is fixed at an upper end thereof to the fixing frame, or an upper end thereof is fixed to the fixing rod, and the fixing rod passes through the through hole of the fixing frame and is hung on the fixing frame through the upper end.

7. The vibration damping caster wheel according to claim 1, wherein the mounting structure is connected to the frame body by a horizontally rotatable disk assembly, the disk assembly includes a top disk, a bottom disk, a plurality of first balls, a plurality of second balls, and fasteners, the top plate is disposed between the top disk and the bottom disk, the top plate is provided with an annular connecting portion, a first ring groove and a second ring groove are respectively disposed on a lower surface of the top disk and an upper surface of the annular connecting portion, a third ring groove and a fourth ring groove are respectively disposed on a lower surface of the annular connecting portion and an upper surface of the bottom disk, cross sections of the first ring groove, the second ring groove, the third ring groove, and the fourth ring groove are all concave arc structures, the first balls are disposed between the first ring groove and the second ring groove, the second balls are disposed between the third ring groove and the fourth ring groove, the caster wheel frame is rotatably connected to the disk assembly by the first balls and the second balls, the fastener vertically penetrates through the through holes in the centers of the upper wave plate and the lower wave plate in sequence and is fastened and connected together, and the mounting structure is fixedly connected to the upper wave plate or the fastener.

8. The vibration damping caster according to claim 7, wherein the perforated edge of the upper wave plate and the perforated edge of the lower wave plate are tightly attached to each other by the fastener, the perforated inner side wall of the upper wave plate and the perforated inner side wall of the lower wave plate are tightly attached to the outer side wall of the fastener, the second ring groove and the third ring groove are arranged in a staggered manner in a radial direction of the annular connecting portion, and the second ring groove is located radially outside the third ring groove.

9. A vibration damping castor according to claim 1, wherein said mounting structure is fixedly attached to said top plate or is integrally formed with said top plate.

10. A vibration damping caster according to claim 1, wherein said mounting structure is one of a mounting plate, a bayonet, a threaded rod, and a socket.