CN110562685B - Trolley, crane, bulk material conveyor and design method of trolley - Google Patents
Trolley, crane, bulk material conveyor and design method of trolley Download PDFInfo
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- CN110562685B CN110562685B CN201910868455.8A CN201910868455A CN110562685B CN 110562685 B CN110562685 B CN 110562685B CN 201910868455 A CN201910868455 A CN 201910868455A CN 110562685 B CN110562685 B CN 110562685B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G35/00—Mechanical conveyors not otherwise provided for
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Abstract
The invention relates to the technical field of engineering machinery, in particular to a trolley, a crane, a bulk material conveyor and a design method of the trolley. The trolley at least comprises a first wheel set, a second wheel set and a third wheel set; the first wheel set is arranged on the first support, the second wheel set is arranged on the second support, and the third wheel set is arranged on the third support; the first support is movably connected with the second support, and the third support is movably connected with the second support. The crane comprises the trolley. The bulk material conveyor comprises the trolley. The design method of the trolley comprises the following steps: at least three wheel sets are arranged and are sequentially movably connected through a support piece. Through installing three wheelsets respectively on the support of difference after, again with swing joint between the support of difference, connection between the three support is the mode of establishing ties on the horizontal direction basically like this to the form of layering connection about can avoiding, and then is favorable to reducing the walking height of platform truck.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a trolley, a crane, a bulk material conveyor and a design method of the trolley.
Background
In a slewing support mechanism of a machine such as a crane or a bulk material conveyor, a carriage is generally used for supporting and slewing.
The existing trolley mostly adopts a combined balance beam type three-wheel structure, and after the whole trolley is assembled, the dead weight of the whole trolley is borne by each wheel set, so that the phenomenon that the local stress of a track surface or a road surface is overlarge is avoided. When the three-wheel equalizing beam and the two-wheel equalizing beam of the combined balanced beam type three-wheel structure are connected, the three-wheel equalizing beam and the two-wheel equalizing beam are required to be arranged in a vertically layered mode so as to realize that the third wheel is connected with the other two wheels, and the travelling height of the trolley is higher.
Disclosure of Invention
The invention aims to provide a trolley, a crane, a bulk material conveyor and a design method of the trolley, so as to solve the technical problem that in the prior art, a three-wheel equalizing beam and a two-wheel equalizing beam are arranged in a vertically layered manner, but the travelling height of the trolley is higher.
The invention provides a trolley, which at least comprises a first wheel set, a second wheel set and a third wheel set; the first wheel set is arranged on the first support, the second wheel set is arranged on the second support, and the third wheel set is arranged on the third support; the first support is movably connected with the second support, and the third support is movably connected with the second support.
Further, the trolley frame (118) is further included, and the first support (104), the second support (105) and the third support (106) are movably connected with the trolley frame (118) respectively; the trolley frame (118) is provided with a limiting structure, so that the second wheel set (102) can move up and down relative to the trolley frame (118).
Further, the limiting structure comprises a limiting groove arranged on the trolley frame (118);
or the limiting structure comprises a stop block structure fixed on the trolley frame (118), and the stop block structure is used for forming a limiting groove.
Further, the wheel shaft of the second wheel set is assembled in the limiting groove.
Further, the first wheel set, the second wheel set and the third wheel set are arranged at intervals;
the first support is connected with the second support through a fourth support, wherein one end of the first support is hinged with one end of the fourth support, and the other end of the fourth support is hinged with the second support;
the third support is connected with the second support through a fifth support, wherein the third support is hinged to one end of the fifth support, and the other end of the fifth support is hinged to the second support.
Furthermore, a first connection point, a second connection point and a third connection point are sequentially arranged on the first support; the first connecting point is used for being connected with the first wheel set; and the connecting lines formed by sequentially connecting the first connecting point, the second connecting point and the third connecting point are broken lines.
Furthermore, a fourth connection point, a fifth connection point and a sixth connection point are sequentially arranged on the second support; the fifth connecting point is used for connecting with the second wheel set; and the connecting lines formed by sequentially connecting the fourth connecting point, the fifth connecting point and the sixth connecting point are broken lines.
Further, the distance between the fourth connection point and the fifth connection point is equal to the distance between the sixth connection point and the fifth connection point.
Further, a line between the second connection point and the third connection point is parallel to a line between the fourth connection point and the fifth connection point.
Furthermore, a seventh connection point, an eighth connection point and a ninth connection point are sequentially arranged on the third support; the seventh connecting point is used for connecting with the third wheel group; and the connecting lines formed by sequentially connecting the seventh connecting point, the eighth connecting point and the ninth connecting point are broken lines.
Further, a line between the eighth connection point and the ninth connection point is parallel to a line between the sixth connection point and the fifth connection point.
Further, a horizontal projection distance L between the first connection point and the fifth connection point, a distance e between the first connection point and the second connection point, and a distance r between the second connection point and the third connection point2And the distance r between the fourth connection point and the fifth connection point1Satisfies the formula:
further, a horizontal projection distance between the first connection point and the fifth connection point is equal to a horizontal projection distance between the seventh connection point and the fifth connection point.
The invention also provides a crane which comprises the trolley.
The invention also provides a bulk material conveyor which comprises the trolley.
The invention also provides a design method of the trolley, which comprises the following steps: at least three wheel sets are arranged and are sequentially movably connected through a support piece.
Compared with the prior art, the invention has the beneficial effects that:
according to the trolley, the crane, the bulk material conveyor and the design method of the trolley, the three wheel sets are respectively arranged on the different supports, and then the different supports are movably connected, so that the three supports are basically connected in series in the horizontal direction, the upper and lower layered connection mode can be avoided, and the travelling height of the trolley can be reduced.
It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily restrictive of the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the disclosure. Together, the description and drawings serve to explain the principles of the disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a trolley according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a first support according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of a second support according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a third support according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a fourth support according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a bogie frame according to an embodiment of the present invention;
fig. 7 is a schematic diagram of another modified structure of the trolley according to the embodiment of the present invention;
fig. 8 is a schematic diagram of still another modified structure of the cart according to the embodiment of the present invention.
Icon:
101-a first wheel set; 102-a second wheel set; 103-a third wheel group; 104-a first support; 105-a second support; 106-third support; 107-fourth support; 108-fifth support; 109-a first connection point; 110-a second connection point; 111-a third connection point; 112-a fourth connection point; 113-a fifth connection point; 114-a sixth connection point; 115-seventh connection point; 116-an eighth connection point; 117-ninth connection point; 118-a bogie frame; 119-a first mounting point; 120-a second mounting point; 121-a third mounting point; 122-limit groove.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example one
Referring to fig. 1 to 6, according to a first embodiment of the present invention, there is provided a trolley, which includes at least a first wheel set 101, a second wheel set 102, and a third wheel set 103; a first wheel set 101 is mounted on a first support 104, a second wheel set 102 is mounted on a second support 105, and a third wheel set 103 is mounted on a third support 106; the first support 104 is movably connected with the second support 105, and the third support 106 is movably connected with the second support 105. Note that, in fig. 2 to 6, a solid dot may indicate a hinge shaft, and a hollow dot may indicate a hinge hole.
Specifically, the first wheel set 101, the second wheel set 102 and the third wheel set 103 are arranged at intervals, that is, in the horizontal direction, the first wheel set 101, the second wheel set 102 and the third wheel set 103 are distributed at intervals. The first support 104, the second support 105 and the third support 106 are connected in sequence, which is equivalent to a series connection mode, and the connection between two adjacent supports is a movable connection. The first wheel set is hinged with the first support through a bearing, the second wheel set is hinged with the second support through a bearing, the third wheel set is hinged with the third support through a bearing, and the three wheel sets and the three supports are hinged through bearings in the same mode, so that the specific mode that the first wheel set is hinged with the first support through a bearing is taken as an example to specifically explain: the two ends of the wheel shaft of the first wheel set can be respectively hinged with the first support through bearings, wherein the wheel shaft of the first wheel set is fixedly connected with the inner ring of the bearing, and the outer ring of the bearing is fixedly connected with the first support.
It should be noted that the first support may also be hinged to the middle of the axle of the first wheel set via a bearing.
According to the trolley, the crane, the bulk material conveyor and the design method of the trolley, the three wheel sets are respectively arranged on the different supports, and then the different supports are movably connected, so that the three supports are basically connected in series in the horizontal direction, the upper and lower layered connection mode can be avoided, and the travelling height of the trolley can be reduced.
In an optional scheme of this embodiment, the trolley further includes a trolley frame 118, and the first support 104, the second support 105, and the third support 106 are respectively movably connected to the trolley frame 118; the trolley frame 118 has a limit structure thereon to enable the second wheel set 102 to move up and down relative to the trolley frame 118. The connection of the trolley to the turntable is achieved by means of a trolley frame 118. The trolley frame 118 is provided with a limiting structure to enable the second wheel set 102 to move up and down relative to the trolley frame 118, so that a certain amount of up-and-down floating can be achieved when the second wheel set 102 walks on an uneven surface.
Specifically, the bogie frame 118 is provided with a first mounting point 119, a second mounting point 120 and a third mounting point 121, and the second mounting point may be located above the first mounting point and the third mounting point; the mounting structure comprises a first mounting point, a second mounting point and a third mounting point, wherein the three mounting points are mutually connected to form an isosceles triangle, and the second mounting point is the vertex of the vertex angle of the isosceles triangle. The trolley frame 118 is articulated to the first support 104, and the trolley frame 118 is also articulated to the third support 106. The hinge point between the bogie frame 118 and the first support 104, which is also the first mounting point for the bogie frame, is the second connection point 110 of the first support 104. The hinge point between the bogie frame 118 and the third support 106 is an eighth connection point 116 of the third support 106, which is also a third mounting point of the bogie frame. The second mounting point is used for being connected with the rotary table.
In an alternative solution of this embodiment, the limiting structure includes a limiting groove 122 formed on the bogie frame 118; the limiting groove is positioned between the first mounting point and the second mounting point; the wheel axle of the second wheel set 102 fits in the retaining groove. The second wheel set is movably connected with the second support, so that when the end part of the wheel shaft of the second wheel set is limited behind the limiting groove and the second wheel set moves up and down relative to the rack, the second wheel set can drive the second support to move up and down together, namely, the movable connection between the second support and the rack is realized; the length c of the limiting groove in the vertical direction can be determined according to the actually required floating amount of the second wheel set 102.
It should be noted that the limiting structure may also adopt other structures, for example, the limiting structure includes a stopper structure fixed on the bogie frame 118, and the stopper structure has a limiting groove; the stop may be fixed to the bogie frame 118 by screws or bolts. The bogie frame can adopt the following embodiments: the bogie frame can comprise two plate structures which are arranged in parallel at intervals, the two plate structures are fixedly connected through a cross beam, the two plate structures are respectively provided with a limiting groove, the two ends of the wheel shaft of the second wheel set are respectively inserted into the limiting grooves, the second wheel set is positioned between the two plate structures, and the first wheel set and the third wheel set can also be positioned between the two plate structures. The bogie frame can also adopt another embodiment as follows: the bogie frame can comprise a plate structure, a limiting groove is formed in the plate structure, the wheel shaft of the second wheel set penetrates through the limiting groove, so that the middle of the wheel shaft of the second wheel set is limited in the limiting groove, and the middle of the wheel shaft of the first wheel set and the middle of the wheel shaft of the third wheel set are hinged to the plate structure respectively.
In an alternative scheme of this embodiment, the first support 104 is connected with the second support 105 through a fourth support 107, wherein the first support 104 is hinged to one end of the fourth support 107, and the other end of the fourth support 107 is hinged to the second support 105; the third support 106 is connected with the second support 105 through a fifth support 108, wherein the third support 106 is hinged with one end of the fifth support 108, and the other end of the fifth support 108 is hinged with the second support 105. The spacing arrangement of three wheel sets can be realized through the fourth support 107 and the fifth support 108, the force transmission can be realized through the fourth support 107 and the fifth support 108, the movable connection between the first support 104 and the second support 105 is realized through the fourth support, and the movable connection between the third support 106 and the second support 105 is realized through the fifth support.
Specifically, the fourth support 107 and the fifth support 108 may each be a rod structure. The fourth support 107 and the fifth support 108 are mainly in tension. The adoption of the rod structure is beneficial to reducing the weight and can well transmit the force. It should be noted that, the fourth support 107 and the fifth support 108 may also be of a plate structure; in addition, the fourth support 107 and the fifth support 108 can adopt rigging rotating buckles, so that the self length adjustment can be realized, and the assembly precision and the later wheel stress maintenance can be matched.
In an alternative of this embodiment, the structure of the fourth support 107 is the same as that of the fifth support 108, the structure of the first support 104 is the same as that of the third support 106, and the first support 104 and the third support 106 are symmetrically arranged on two opposite sides of the second support 105. This is advantageous for achieving load balancing of the trolley.
In an optional scheme of this embodiment, the first support 104 is sequentially provided with a first connection point 109, a second connection point 110, and a third connection point 111; the first connecting point 109 is used for connecting with the first wheel set 101; the connecting line formed by sequentially connecting the first connecting point 109, the second connecting point 110 and the third connecting point 111 is a broken line, and the structure of the broken line is favorable for the stress balance design of the trolley.
Specifically, the first wheel set 101 is mounted at a first connection point 109; and the third connection point 111 is a hinge point between the first support 104 and one end of the fourth support 107. The line connecting the first connection point 109 and the second connection point 110 and the line connecting the second connection point 110 and the third connection point 111 are opened at an angle θ facing downward. It should be noted that the first support 104 may be a beam structure, and the beam structure may be made of rods and/or plates; the first connection point 109 and the third connection point 111 are located at the ends of the beam structure, while the second connection point 110 is located at the bend of the bent beam structure.
In an optional scheme of this embodiment, a fourth connection point 112, a fifth connection point 113 and a sixth connection point 114 are sequentially arranged on the second support 105; a fifth connection point 113 for connection to the second wheel set 102; the connecting lines formed by sequentially connecting the fourth connecting point 112, the fifth connecting point 113 and the sixth connecting point 114 are broken lines, and the design of stress balance of the trolley is facilitated by the arrangement of a broken line structure.
Specifically, the second wheel set 102 is mounted at a fifth connection point 113; the fourth connection point 112 is a hinge point between the other end of the fourth support 107 and the second support 105. The line between the second connection point 110 and the third connection point 111 opens at an angle α to the line between the third connection point 111 and the fourth connection point 112. The line between the third connection point 111 and the fourth connection point 112 opens at an angle β with the line between the fourth connection point 112 and the fifth connection point 113. The line connecting the fourth connection point 112 and the fifth connection point 113 opens upward at an angle η with respect to the line connecting the fifth connection point 113 and the sixth connection point 114. It should be noted that the second support 105 may be a beam structure, and the beam structure may be made of rods and/or plates; the first connection point 109 and the third connection point 111 are located at the ends of the beam structure, while the second connection point 110 is located at the bend of the bent beam structure.
In an alternative to this embodiment, the distance between the fourth connection point 112 and the fifth connection point 113 is equal to the distance between the sixth connection point 114 and the fifth connection point 113. This facilitates the force balance between the first wheel set 101 and the second wheel set 102 when the first support 104 and the third support 106 are connected to the second support 105.
In an alternative of this embodiment, a line connecting the second connection point 110 and the third connection point 111 is parallel to a line connecting the fourth connection point 112 and the fifth connection point 113, so that an angle formed by a line connecting the second connection point 110 and the third connection point 111 and a line connecting the third connection point 111 and the fourth connection point 112 is equal to an angle formed by a line connecting the third connection point 111 and the fourth connection point 112 and a line connecting the fourth connection point 112 and the fifth connection point 113.
Specifically, the angle between the line connecting the second connection point 110 and the third connection point 111 and the line connecting the third connection point 111 and the fourth connection point 112 is 90 degrees.
In an optional scheme of this embodiment, a seventh connection point 115, an eighth connection point 116, and a ninth connection point 117 are sequentially disposed on the third support 106; a seventh connection point 115 for connection to the third wheel set 103; the connection lines formed by connecting the seventh connection point 115, the eighth connection point 116 and the ninth connection point 117 in sequence are broken lines. The line between the eighth connection point 116 and the ninth connection point 117 is parallel to the line between the sixth connection point 114 and the fifth connection point 113. Thus the angle between the line between the eighth connection point 116 and the ninth connection point 117 and the line between the ninth connection point 117 and the sixth connection point 114 is equal to the angle between the line between the fifth connection point 113 and the sixth connection point 114 and the line between the sixth connection point 114 and the ninth connection point 117. The trolley is in a broken line structure, so that the stress balance design of the trolley is facilitated.
Specifically, the third wheel set 103 is mounted at a seventh connection point 115. The angle between the line between the eighth connection point 116 and the ninth connection point 117 and the line between the sixth connection point 114 and the ninth connection point 117 is 90 degrees. At this time, the optimal assembly state is between the three wheel sets. It should be noted that the first support 104 may be a beam structure, and the beam structure may be made of rods and/or plates; the first connection point 109 and the third connection point 111 are located at the ends of the beam structure, while the second connection point 110 is located at the bend of the bent beam structure.
In an alternative of this embodiment, the third connection point 111 is located below the first connection point 109 and the second connection point 110; the fourth connection point 112 and the sixth connection point 114 are both located above the fifth connection point 113; the ninth connection point 117 is located below the eighth connection point 116 and the seventh connection point 115. Since the first support 104 and the third support 106 are bilaterally symmetric structures, and the installation relationship between the first support 104 and the second support 105 is symmetric to the installation relationship between the third support 106 and the second support 105, specific installation relationship between the third support 106 and the second support 105, and the relationship between the seventh connection point 115, the eighth connection point 116, and the ninth connection point 117 are not described in detail, and specific reference may be made to the relationship between the first support 104 and the second support 105 and the relationship between the first connection point 109, the second connection point 110, and the third connection point 111.
In an alternative of this embodiment, a horizontal projection distance L between the first connection point 109 and the fifth connection point 113, a distance e between the first connection point 109 and the second connection point 110, and a distance r between the second connection point 110 and the third connection point 111 are provided2And a distance r between the fourth connection point 112 and the fifth connection point 1131Satisfies the formula:
the horizontal projection distance between the first connection point 109 and the fifth connection point 113 is the distance between the projection point of the first connection point 109 in the horizontal plane and the projection point of the fifth connection point 113 in the horizontal plane.
Since the first support 104 and the third support 106 are symmetrically disposed at both sides of the second support 105, a horizontal projection distance between the first connection point 109 and the fifth connection point 113 is equal to a horizontal projection distance between the seventh connection point 115 and the fifth connection point 113. At this time, a horizontal projection distance L between the seventh connection point 115 and the fifth connection point 113, a distance e between the seventh connection point 115 and the eighth connection point 116, and a distance r between the eighth connection point 116 and the ninth connection point 1172And a distance r between the sixth connection point 114 and the fifth connection point 1131The formula is also satisfied:
when the angle between the connecting line between the second connecting point 110 and the third connecting point 111 and the connecting line between the third connecting point 111 and the fourth connecting point 112 is 90 degrees, the optimal assembly state is achieved among the three groups, and the stress among the first wheel group 101, the second wheel group 102 and the third wheel is balanced when the assembly size satisfies the above formula.
It should be noted that, in some cases, the number of the second wheel sets 102 of the trolley may also be determined according to actual situations, for example, the number of the second wheel sets 102 is more than two, when the number of the second wheel sets 102 is more than two, the first wheel set 101, at least two second wheel sets 102, and the third wheel set 103 are arranged side by side in the horizontal direction, and a connecting rod connection may be used between two second wheel sets 102, that is, the connecting rod connects two second supports 105 (see fig. 7).
Example two
The third embodiment of the present invention also provides a trolley, in which another implementation of the connection relationship among the first support 104, the second support 105, and the third support 106 is described, and the technical solution of the first embodiment also belongs to this embodiment, and is not described again.
Referring to fig. 8, in an alternative embodiment, the third connection point 111 is located above the first connection point 109 and the second connection point 110; the fourth connection point 112 and the sixth connection point 114 are both located below the fifth connection point 113; the ninth connection point 117 is located above the eighth connection point 116 and the seventh connection point 115.
The angle between the line connecting the first connection point 109 and the second connection point 110 and the line connecting the second connection point 110 and the third connection point 111 opens upward.
A line connecting the second connection point 110 and the third connection point 111 and a line connecting the third connection point 111 and the fourth connection point 112 have an opening facing downward. The line connecting the third connection point 111 and the fourth connection point 112 opens upward at an angle with the line connecting the fourth connection point 112 and the fifth connection point 113. The line connecting the fourth connection point 112 and the fifth connection point 113 opens downward at an angle to the line connecting the fifth connection point 113 and the sixth connection point 114. In this embodiment, the fourth support 107 and the fifth support 108 are mainly in a compressed state.
EXAMPLE III
The third embodiment of the invention provides a design method of a trolley, and the design method of the trolley is suitable for the trolley provided in the first embodiment or the second embodiment.
The design method of the trolley comprises the following steps: at least three wheel sets are arranged and are sequentially movably connected with the supporting piece. When the number of the wheel sets is three, the three wheel sets are respectively a first wheel set 101, a second wheel set 102 and a third wheel set 103; the supports may include a first support 104, a second support 105, and a third support 106. A first wheel set 101 is mounted on a first support 104, a second wheel set 102 is mounted on a second support 105, and a third wheel set 103 is mounted on a third support 106; the first support 104 is movably connected with the second support 105, and the third support 106 is movably connected with the second support 105.
Example four
The second embodiment of the invention provides a crane which comprises the trolley provided by the first embodiment or the second embodiment.
EXAMPLE five
The embodiment of the invention also provides a bulk material conveyor which comprises the trolley provided by the first embodiment or the second embodiment.
In summary, according to the design method of the trolley, the crane, the bulk material conveyor and the trolley provided by the embodiment of the invention, the first support 104, the second support 105 and the third support 106 are connected conveniently, and compared with the existing combined balance beam type three-wheel structure, the trolley provided by the invention has the advantages that the weight is lighter after the assembly, the walking height is low, and the stability is better; the first support 104, the second support 105 and the third support 106 are easy to position. The trolley adopts three wheels and is arranged side by side, and through the mutual connection between different supports, the stress of the three wheel sets can be automatically adjusted, thereby achieving the purposes of balancing the stress of the wheel sets and reducing the walking height.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (15)
1. A trolley, characterized by comprising at least a first wheel set (101), a second wheel set (102) and a third wheel set (103); the first wheel set (101) is mounted on a first support (104), the second wheel set (102) is mounted on a second support (105), and the third wheel set (103) is mounted on a third support (106); the first support (104) is movably connected with the second support (105), and the third support (106) is movably connected with the second support (105);
the first wheel set (101), the second wheel set (102) and the third wheel set (103) are arranged at intervals;
the first support (104) and the second support (105) are connected through a fourth support (107), wherein the first support (104) is hinged with one end of the fourth support (107), and the other end of the fourth support (107) is hinged with the second support (105);
the third support (106) is connected with the second support (105) through a fifth support (108), wherein the third support (106) is hinged with one end of the fifth support (108), and the other end of the fifth support (108) is hinged with the second support (105).
2. The trolley according to claim 1, further comprising a trolley frame (118), wherein the first support (104), the second support (105) and the third support (106) are movably connected with the trolley frame (118), respectively; the trolley frame (118) is provided with a limiting structure, so that the second wheel set (102) can move up and down relative to the trolley frame (118).
3. The trolley according to claim 2, characterized in that the limit structure comprises a limit groove provided on the trolley frame (118);
or the limiting structure comprises a stop block structure fixed on the trolley frame (118), and the stop block structure is used for forming a limiting groove.
4. A trolley as claimed in claim 3, characterized in that the wheel axles of the second wheel set (102) are fitted in the limit recesses.
5. Trolley according to any of claims 1-4 characterised in that a first connection point (109), a second connection point (110) and a third connection point (111) are arranged in sequence on the first support (104); the first connection point (109) is used for connecting with the first wheel set (101); and the connecting lines formed by sequentially connecting the first connecting point (109), the second connecting point (110) and the third connecting point (111) are broken lines.
6. Trolley according to claim 5 characterised in that a fourth connection point (112), a fifth connection point (113) and a sixth connection point (114) are arranged in sequence on the second support (105); the fifth connection point (113) is used for connecting with the second wheel set (102); and the connecting lines formed by sequentially connecting the fourth connecting point (112), the fifth connecting point (113) and the sixth connecting point (114) are broken lines.
7. Trolley according to claim 6, characterised in that the distance between the fourth connection point (112) and the fifth connection point (113) is equal to the distance between the sixth connection point (114) and the fifth connection point (113).
8. Trolley according to claim 6, characterised in that the line between the second connection point (110) and the third connection point (111) is parallel to the line between the fourth connection point (112) and the fifth connection point (113).
9. The trolley according to claim 6, characterized in that a seventh connection point (115), an eighth connection point (116) and a ninth connection point (117) are provided in sequence on the third support (106); -said seventh connection point (115) is intended to be connected to said third wheel set (103); and the connection lines formed by sequentially connecting the seventh connection point (115), the eighth connection point (116) and the ninth connection point (117) are broken lines.
10. Trolley according to claim 9, characterized in that the line between the eighth connection point (116) and the ninth connection point (117) is parallel to the line between the sixth connection point (114) and the fifth connection point (113).
11. Trolley according to claim 7, characterised in that the horizontal projection distance L between the first connection point (109) and the fifth connection point (113), the distance e between the first connection point (109) and the second connection point (110), the distance r between the second connection point (110) and the third connection point (111)2And a distance r between the fourth connection point (112) and the fifth connection point (113)1Satisfies the formula:
12. trolley according to claim 9, characterized in that the horizontal projection distance between the first connection point (109) and the fifth connection point (113) is equal to the horizontal projection distance between the seventh connection point (115) and the fifth connection point (113).
13. A crane, comprising a trolley according to any one of claims 1 to 12.
14. A bulk conveyor comprising a trolley according to any one of claims 1 to 12.
15. A method of designing a dolly adapted for use in a dolly according to any one of claims 1 to 12, the method comprising: at least three wheel sets are arranged and are sequentially movably connected through a support piece.
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| CN201910868455.8A CN110562685B (en) | 2019-09-12 | 2019-09-12 | Trolley, crane, bulk material conveyor and design method of trolley |
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| CN110562685B true CN110562685B (en) | 2021-03-09 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1029140B (en) * | 1954-04-14 | 1958-04-30 | Krupp Ardelt Gmbh | Chassis with more than two axes for cranes, loading systems or the like. |
| DE2711174A1 (en) * | 1977-03-15 | 1978-09-28 | Krupp Gmbh | Railway vehicle wheel load distributor - uses hydraulic mechanism to eliminate spring action under bogie mounting loading |
| JPS5824306B2 (en) * | 1979-04-06 | 1983-05-20 | 三井造船株式会社 | Multi-wheel support device |
| CN201423892Y (en) * | 2009-06-25 | 2010-03-17 | 三一汽车制造有限公司 | Balance suspension frame and multi-shaft crane comprising the balance suspension frame |
| CN106043324B (en) * | 2016-08-01 | 2018-05-11 | 泰赫·库克 | The trolley structure and its running track of mid-air-bus |
| CN108482395A (en) * | 2018-05-21 | 2018-09-04 | 成都西交智众科技有限公司 | Wheel for vehicle hub electric-machine directly-driven running mechanism |
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