CN209522539U - A kind of tray carriage and its auxiliary wheel assembly - Google Patents

Abstract

The utility model discloses a kind of auxiliary wheel assemblies, it contacts and offsets and to provide the spring of elastic force including upper bracket, to the lower bracket that is rotatablely connected with upper bracket and with lower bracket, further include with upper bracket connection, contact the locking component for offseting with the post rod parts of adjustment spring elastic force and being fitted closely with post rod parts mating connection, to the end face outside with upper bracket to prevent post rod parts from loosening with spring.The invention also discloses a kind of tray carriages including above-mentioned auxiliary wheel assembly.The load that above-mentioned auxiliary wheel assembly can as desired bear auxiliary wheel precisely adjusts, and so as to reduce influence brought by the foozle of production, assembling process, and can economize on resources, reduce production cost；Meanwhile the above-mentioned adjustable auxiliary wheel assembly of elasticity can be applied to more multi-vehicle-type.

Description

A kind of tray carriage and its auxiliary wheel assembly

Technical field

The utility model relates to fork truck mounting technology field, in particular to a kind of auxiliary wheel assembly.The utility model also relates to And a kind of tray carriage with the auxiliary wheel assembly.

Background technique

Tray carriage is a kind of general designation of fork truck type, including tray truck and pallet stacking car.

Currently, as depicted in figs. 1 and 2, the drive system (including driving wheel 01) and vehicle frame 02 of tray carriage are rigid connections , and the auxiliary wheel 03 of 01 two sides of driving wheel and vehicle frame 02 are elastic connections, i.e., it (is usually to pass through that auxiliary wheel 03, which is elastic, Spring 04), pass through the difference in height between setting auxiliary wheel 03 and driving wheel 01 when design, so that vehicle is in level road When, the spring 04 of auxiliary wheel 03 has certain pre compressed magnitude, and the elastic reaction of spring 04 is in auxiliary wheel 03, such auxiliary wheel 03 With regard to helping driving wheel 01 to share a part of load.Traditional elastic auxiliary wheel, as shown in figure 3, by mounting base 07, upper bracket 06, lower bracket 05, spring 04, auxiliary wheel 03 form, and the relationship between them is that auxiliary wheel 03 and the rotation of lower bracket 05 connect respectively It connects, lower bracket 05 and upper bracket 06 are rotatablely connected, while one end face contact of lower bracket 05 and spring 04, the other end of spring 04 Face is contacted with upper bracket 2, and so, lower bracket 05 can make rotating motion relative to upper bracket 06, but simultaneously again by bullet The elastic force of spring 04 acts on, and the load of this traditional elastic auxiliary wheel, auxiliary wheel 03 is transformed by the elastic force of spring 04, and Decrement depending on spring 04.However, how much related with the decrement of spring 04 03 stress of auxiliary wheel is, and the compression of spring 04 Amount is directly determined by driving wheel 01 and the difference in height of auxiliary wheel 03, and this difference in height depends on driving wheel 01 and auxiliary wheel 03 Respective installation site, driving wheel 01 and auxiliary wheel 03 are all mounted on vehicle frame, due to foozle, driving wheel 01 and auxiliary wheel 03 mounting surface is difficult to reach exact requirements, this just ultimately causes driving wheel 01 and ideal is not achieved in the load distribution of auxiliary wheel 03 State；In addition, the load distribution of the good driving wheel 01 and auxiliary wheel 03 of Theoretical Design can not be suitable for all operating conditions, and it is above-mentioned Driving wheel 01 and the structure of auxiliary wheel 03 once install, and are just unable to complete the adjusting to load distribution.

Therefore, how to avoid the load distribution of driving wheel and auxiliary wheel from not adjusting on demand is that those skilled in the art are current Technical problem to be solved.

Utility model content

The purpose of the utility model is to provide a kind of auxiliary wheel assembly, which can be as desired to auxiliary wheel The load born accurately is tuned up or is turned down, so as to redistribute the load of driving wheel and auxiliary wheel, together When can be to avoid being wasted caused by the foozle of components, so as to save the cost.The another object of the utility model It is to provide a kind of tray carriage including above-mentioned auxiliary wheel assembly.

To achieve the above object, the utility model provides a kind of auxiliary wheel assembly, including upper bracket, to the upper branch The lower bracket and contacting with the lower bracket of frame rotation connection offsets and providing the spring of elastic force, further include with it is described on Bracket connection, to contacted with the spring offset with adjust the post rod parts of the spring force and with the post rod parts It is cooperatively connected, the locking component to be fitted closely with the end face outside of the upper bracket to prevent the post rod parts from loosening.

Preferably, the post rod parts are connected through a screw thread with the upper bracket.

Preferably, the post rod parts include threaded connection section, the upper bracket be equipped with to the threaded connection section The threaded hole of mating connection.

Preferably, the locking component is specially nut, and the nut with the threaded connection section to be cooperatively connected.

Preferably, the post rod parts further include being connected with the threaded connection section, to connect with the end face of the spring Touch the second circle of the first cylindrical section to offset and the inner ring with first cylindrical section coaxial arrangement, to be inserted into the spring Shell of column, and the diameter of second cylindrical section is less than the diameter of first cylindrical section.

It preferably, further include set on the post rod parts, with so that spanner is filled in rotate the deep gouge of the post rod parts.

Preferably, the deep gouge is specially hexagon deep gouge.

Preferably, the lower bracket includes the guiding being oriented to protrude into the inner ring of the spring for the spring positioning Column.

It preferably, further include being set to the upper bracket top, the mounting base to be rotatablely connected with the upper bracket.

The utility model also provides a kind of tray carriage, including auxiliary wheel assembly described in any of the above embodiments.

Relative to above-mentioned background technique, the utility model is required for the different of tray carriage, and it is total to devise a kind of auxiliary wheel At.Since the load distribution of the good driving wheel of Theoretical Design and auxiliary wheel can not be suitable for all operating conditions, that is to say, that driving The load distribution of wheel and auxiliary wheel can not be adjusted on demand, therefore, can accurately adjust auxiliary wheel to ground using one kind The auxiliary wheel assembly of active force is necessary.

Specifically, above-mentioned auxiliary wheel assembly includes upper bracket, lower bracket and spring, wherein lower bracket and upper bracket Rotation connection, spring are used to provide elastic force to auxiliary wheel；Further, which further includes post rod parts and locking Component, wherein post rod parts are connect with upper bracket, and post rod parts are used to adjustment spring elastic force, and locking component is matched with post rod parts It closes and connects, the end face outside of locking component and upper bracket fits closely, so as to prevent post rod parts from loosening, wherein spring A side end face contact and offset with lower bracket, another side end face of spring is contacted with post rod parts to offset, and can pass through top in this way Rod unit compresses or locking spring, so as to accurately adjust auxiliary wheel to the active force on ground, that is to say, that pass through top The load of the adjustable auxiliary wheel of rod unit, so, lower bracket can make rotating motion relative to upper bracket, lower bracket again by Elastic force to spring acts on, i.e., lower bracket can be swung in the corresponding compression travel of spring, and corresponding post rod parts tune The different elastic force of spring are saved, and then can according to need adjustment auxiliary wheel to the load on ground；Above-mentioned set-up mode can also subtract Small production, the brought influence of foozle of assembling process, so as to avoid leading to components report because foozle is big It is useless, and then can economize on resources, reduce production cost；Meanwhile the above-mentioned adjustable auxiliary wheel assembly of elasticity can be applied to more Vehicle, even if the initial elastic force of different vehicle Theoretical Designs is different, the adjustable feature of the assembly is equally applicable to various vehicles Type realizes real modularized design, improves three and changes level.

Detailed description of the invention

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also Other attached drawings can be obtained according to the attached drawing of offer.

Fig. 1 is the schematic diagram of driving wheel and auxiliary wheel initial mounting state；

Fig. 2 is that driving wheel and auxiliary wheel land the schematic diagram of state；

Fig. 3 is the structural schematic diagram of elastic auxiliary wheel in the prior art；

Fig. 4 is a kind of structural schematic diagram for assisting wheel assembly disclosed in the utility model embodiment；

Fig. 5 is the structural schematic diagram of upper bracket in Fig. 4；

Fig. 6 is the structural schematic diagram of post rod parts in Fig. 4.

Wherein:

1- mounting base, 2- upper bracket, 21- threaded hole, 3- lower bracket, 31- guide post, 4- auxiliary wheel, 5- spring, 6- mandril Component, 61- deep gouge, 62- threaded connection section, the first cylindrical section of 63-, the second cylindrical section of 64-, the locking component of 7-.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The core of the utility model is to provide a kind of auxiliary wheel assembly, which can be as desired to auxiliary wheel The load born accurately is tuned up or is turned down, so as to redistribute the load of driving wheel and auxiliary wheel, together When can be to avoid being wasted caused by the foozle of components, so as to save the cost.Another core of the utility model It is to provide a kind of tray carriage including above-mentioned auxiliary wheel assembly.

In order to make those skilled in the art more fully understand the utility model, with reference to the accompanying drawing and specifically The utility model is described in further detail for embodiment.

It should be noted that be all based on specification attached for the nouns of locality such as " top, lower section, left side, right side " described below Defined in figure.

Fig. 4, Fig. 5 and Fig. 6 are please referred to, Fig. 4 shows for a kind of structure for assisting wheel assembly disclosed in the utility model embodiment It is intended to；Fig. 5 is the structural schematic diagram of upper bracket in Fig. 4；Fig. 6 is the structural schematic diagram of post rod parts in Fig. 4.

Wheel assembly, including upper bracket 2, lower bracket 3, auxiliary wheel 4 and bullet are assisted provided by the utility model embodiment Spring 5, wherein lower bracket 3 and upper bracket 2 are rotatablely connected, and auxiliary wheel 4 and lower bracket 3 are rotatablely connected, meanwhile, lower bracket 3 and spring 5 side end face contact offsets, and so, lower bracket 3 can make rotating motion relative to upper bracket 2, and lower bracket 3 is again by bullet The elastic force of spring 5 acts on, i.e., lower bracket 3 can be swung in the corresponding compression travel of spring 5, and the elastic force of spring 5 can turn Auxiliary wheel 4 is turned to the load on ground；In addition, above-mentioned spring 5 can choose cylindrical screw bullet according to actual application needs Spring, and the initial mounting state of cylindrically coiled spring is horizontally disposed, wherein the right end face and lower bracket of cylindrically coiled spring 3 contacts offset, to realize the conversion of elastic force.

In addition, auxiliary wheel assembly is additionally provided with mounting base 1, which is set to the top position of upper bracket 2, and upper bracket 2 It is rotatablely connected with mounting base 1, mounting base 1 is fixedly connected on the vehicle frame of auxiliary wheel assembly, and upper bracket 2 can be relative to mounting base 1 360 ° of rotations are done in a plane.

Further, which further includes post rod parts 6 and locking component 7, wherein post rod parts 6 with it is upper Bracket 2 connects, and post rod parts 6 are used to 5 elastic force of adjustment spring, and locking component 7 is cooperatively connected with post rod parts 6, and locking component 7 exists It is fitted closely while mating connection with post rod parts 6 with the end face outside of upper bracket 2, can prevent post rod parts 6 loose in this way It is de-.

So, a side end face of spring 5 contacts with the lower bracket 3 for being located at right side and offsets, another side end face of spring 5 It contacts and offsets with the post rod parts 6 for being located at left side, can be compressed in this way by post rod parts 6 or locking spring 5, so as to Accurately to adjust auxiliary wheel 4 to the active force on ground, that is to say, that by the load of the adjustable auxiliary wheel 4 of post rod parts 6, And the different elastic force of corresponding 6 adjustment spring 5 of post rod parts, and then can according to need adjustment auxiliary wheel 4 to the load on ground.

Above-mentioned set-up mode can also reduce the brought influence of foozle of production, assembling process, so as to keep away Exempt to cause components to be scrapped because foozle is big, and then can economize on resources, reduce production cost；Meanwhile above-mentioned elasticity can The auxiliary wheel assembly of tune can be applied to more multi-vehicle-type, even if the initial elastic force of different vehicle Theoretical Designs is different, the assembly Adjustable feature be equally applicable to a variety of models, realize real modularized design.

In the utility model embodiment, the connection type of post rod parts 6 and upper bracket 2, which can use, removably to be connected Connect, and premise is that meeting post rod parts 6 can move with respect to upper bracket 2, so as to meet post rod parts 6 for The regulatory function of 5 elastic force of spring.Preferably, post rod parts 6 and upper bracket 2 are connected through a screw thread to realize above-mentioned function.

Specifically, post rod parts 6 include threaded connection section 62, threaded connection section 62 is arranged with pre-set dimension, for example, root According to actual needs, the length of the threaded connection section 62 is set as L, and L is sufficient for post rod parts 6 for the elastic force tune of spring 5 Section effect, the screw thread of threaded connection section 62 are set as external screw thread, and major diameter is set as M, and screw pitch is set as P；Correspondingly, upper bracket 2 The position of upper installation spring 5 offers threaded hole 21, which opens up in the horizontal direction, i.e. the axis of the threaded hole 21 is Horizontal linear, threaded hole 21 can be cooperatively connected with the threaded connection section 62 of post rod parts 6, and post rod parts 6 can be realized in this way For the regulatory function of 5 elastic force of spring.

On the basis of the above, above-mentioned locking component 7 specifically can be set to nut, and nut can be with the spiral shell of post rod parts 6 Line linkage section 62 is cooperatively connected, meanwhile, post rod parts 6 can be risen by nut and fitting closely for 2 left end face of upper bracket To the effect of locking thread, and the nut is standard component, its internal screw thread specification and the specification phase of the threaded hole 21 of upper bracket 2 Together, i.e., major diameter is M, screw pitch P.

Certainly, the internal screw thread specification, the specification of the threaded hole 21 of upper bracket 2 of nut and the threaded connection of post rod parts 6 The external screw thread specification of section 62 can be adjusted according to actual needs, herein and be not specifically limited, and above-mentioned major diameter is M, spiral shell Away from for P only be considered as general scenario.

More particularly, post rod parts 6 further include the first cylindrical section 63 and the second cylindrical section 64, wherein the first cylinder Section 63 is connected with the right end of threaded connection section 62, and the second cylindrical section 64 is connected with the right end of the first cylindrical section 63, and is threadedly coupled The 62, first cylindrical section 63 of section and 64 three of the second cylindrical section coaxial arrangement, wherein the diameter D of the first cylindrical section 63 is greater than the The diameter d of two cylindrical sections 64, the diameter d of the second cylindrical section 64 are less than or equal to the inner ring diameter of spring 5, and threaded connection section 62 diameter can be set between D and d, or be greater than D, wherein the right-hand end for the first cylindrical section 63 being relatively large in diameter Face can contact with the left end face of spring 5 and offset, i.e. the right end face that withstands on the first cylindrical section 63 of spring 5, and diameter is smaller The second cylindrical section 64 be inserted into the inner ring of spring 5, so as to play the role of positioning and guiding to spring 5.

Further, lower bracket 3 contacts the end face that offsets with spring 5 and is equipped with guide post 31, the guide post 31 with it is above-mentioned The effect of second cylindrical section 64 of post rod parts 6 is similar, i.e. the guide post 31 inner ring that can extend into spring 5, so as to right Spring 5 plays the role of positioning and guiding, so, the right side of the first cylindrical section 63 of the left end face and post rod parts 6 of spring 5 Side face contact offsets, and the right end face of spring 5 is contacted with lower bracket 3 to offset, and spring 5 is in the second cylindrical section 64 and guide post It being capable of stable operation under 31 collective effect.

In order to optimize above-described embodiment, auxiliary wheel assembly further includes the deep gouge 61 set on 6 left end face of post rod parts, this is heavy Slot 61 is for filling in spanner, so as to realize the purpose of rotation post rod parts 6, wherein the shape of deep gouge 61 can be different Selection, for example, according to market it is universal apply needs, deep gouge 61 can be set to hexagon deep gouge, which can To be used cooperatively with allen wrench, on condition that the specification of the two matches.

In conclusion the upper bracket 2 of the auxiliary wheel assembly and mounting base 1 are rotatablely connected, lower bracket 3 and upper bracket 2 are rotated Connection, post rod parts 6 are connected through a screw thread with upper bracket 2, the end of the first cylindrical section 63 of the left end and post rod parts 6 of spring 5 Face contact, snare is on the second cylindrical section 64 in the left side of spring 5, and 5 right end of spring is contacted with the end face of lower bracket 3, spring 5 In the guide post 31 of lower bracket 3, nut is threadedly coupled snare with post rod parts 6 in right side, and one end face of nut and upper bracket 2 End face outside fit closely, so as to play the role of locking thread to post rod parts 6.

The assembly assembled has following features, and X and Y is the reserved space in 6 two sides of post rod parts, spring 5 respectively in Fig. 4 To the directed force F bullet of lower bracket 3, it is eventually transferred to auxiliary wheel 4 to the directed force F wheel on ground, according to the relationship in structure, two Power has such relationship:

F wheel=I × F bullet,

Wherein I is a constant, is the ratio of the two torque arm length, and occurrence is related with structure size,

And:

F bullet=K × δ,

Wherein K is the stiffness coefficient of spring 5, and δ is the initial pre compressed magnitude of spring 5,

Since in this configuration, post rod parts 6 can carry out position adjusting by being threadedly engaged, if the amount that screw thread is adjusted is β, If adjusting the circle number that post rod parts 6 are rotated is n, then have:

β=n × P, wherein P is the thread pitch of post rod parts 6, defined above, if post rod parts 6 press spring 5 The adjusting direction of contracting is positive direction, i.e., when spring 5 compresses, β is positive value, and the adjusting direction that post rod parts 6 loosen spring 5 is negative When direction, i.e. spring 5 are unclamped, β is negative value；

So, under original state, F wheel=I × F bullet=I × K × δ；After being overregulated post rod parts 6, F wheel=I × F bullet=I × K × (δ+β)=I × K × (δ+n × P),

In above-mentioned formula, the only adjusting ring number n of post rod parts 6 is variable, remaining is constant, therefore it may only be necessary to logical Post rod parts 6 are overregulated to compress or locking spring 5, can accurately be adjusted the load of auxiliary wheel assembly, correspondingly just be had adjusted Active force of the auxiliary wheel 4 to ground.

A kind of tray carriage provided by the utility model, including wheel assembly is assisted described in above-mentioned specific embodiment；Support The other parts of jiggering are referred to the prior art, not reinflated herein.

It should be noted that in the present specification, such as first and second etc relational terms are used merely to one Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual Relationship or sequence.

Tray carriage provided by the utility model and its auxiliary wheel assembly are described in detail above.It is used herein Specific case is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help Understand the method and its core concept of the utility model.It should be pointed out that for those skilled in the art, Under the premise of not departing from the utility model principle, several improvements and modifications can be made to this utility model, these improve and Modification is also fallen into the protection scope of the utility model claims.

Claims (10)

1. a kind of auxiliary wheel assembly, which is characterized in that including upper bracket (2), to the upper bracket (2) rotation connection under Bracket (3) and contacting with the lower bracket (3) offsets and the spring to provide elastic force (5), further includes and the upper bracket (2) connection, to contacted with the spring (5) offset with adjust the post rod parts (6) of the spring (5) elastic force and with it is described Post rod parts (6) are cooperatively connected, to fit closely with the end face outside of the upper bracket (2) to prevent the post rod parts (6) the locking component (7) loosened.

2. auxiliary wheel assembly according to claim 1, which is characterized in that the post rod parts (6) and the upper bracket (2) It is connected through a screw thread.

3. auxiliary wheel assembly according to claim 2, which is characterized in that the post rod parts (6) include threaded connection section (62), the upper bracket (2) is equipped with the threaded hole (21) to be cooperatively connected with the threaded connection section (62).

4. auxiliary wheel assembly according to claim 3, which is characterized in that the locking component (7) is specially nut, described Nut with the threaded connection section (62) to be cooperatively connected.

5. auxiliary wheel assembly according to claim 4, which is characterized in that the post rod parts (6) further include and the spiral shell Line linkage section (62) is connected, to contact the first cylindrical section (63) to offset with the end face of the spring (5) and with described the One cylindrical section (63) coaxial arrangement, inner ring to be inserted into the spring (5) the second cylindrical section (64), and second cylinder The diameter of section (64) is less than the diameter of first cylindrical section (63).

6. auxiliary wheel assembly according to any one of claims 1 to 5, which is characterized in that further include being set to the mandril portion Part (6) is filled in for spanner to rotate the deep gouge of the post rod parts (6) (61).

7. auxiliary wheel assembly according to claim 6, which is characterized in that the deep gouge (61) is specially hexagon deep gouge.

8. auxiliary wheel assembly according to claim 7, which is characterized in that the lower bracket (3) includes described to protrude into The inner ring of spring (5) for the spring (5) positioning and guiding guide post (31).

9. auxiliary wheel assembly according to claim 8, which is characterized in that further include being set to above the upper bracket (2), using With the mounting base (1) being rotatablely connected with the upper bracket (2).

10. a kind of tray carriage, which is characterized in that including auxiliary wheel assembly as described in any one of claim 1 to 9.