CN210438314U - Counterweight device and crane - Google Patents
Counterweight device and crane Download PDFInfo
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- CN210438314U CN210438314U CN201921555429.1U CN201921555429U CN210438314U CN 210438314 U CN210438314 U CN 210438314U CN 201921555429 U CN201921555429 U CN 201921555429U CN 210438314 U CN210438314 U CN 210438314U
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Abstract
The utility model belongs to the technical field of the hoisting equipment technique and specifically relates to a counterweight device and hoist are related to. The counterweight device comprises a fixed counterweight, an oil cylinder and at least one movable counterweight, wherein the fixed counterweight is arranged below a rotary table of the crane, and the oil cylinder is connected with the fixed counterweight; when one movable counterweight is arranged, a piston rod of the oil cylinder is connected with the movable counterweight; when a plurality of movable weights are provided, all or any part of the movable weights can be connected with the piston rod as a whole. The utility model provides a counterweight device is connected through the piston rod with the hydro-cylinder is direct with movable counter weight to can realize articulating the lower surface at fixed counter weight with movable counter weight, need not to set up the counterweight bottom plate that has the stand, save the cost, and when movable counter weight is a plurality of, can be connected whole or arbitrary partial movable counter weight as whole with the piston rod, the mounting means is more nimble, simple.
Description
Technical Field
The utility model belongs to the technical field of the hoisting equipment technique and specifically relates to a counterweight device and hoist are related to.
Background
The counterweight device is one of the important components of the crane as the counterweight when the crane is hoisted, therefore, the counterweight device plays a decisive role in the hoisting performance of the crane.
The existing counterweight device comprises a fixed counterweight, a movable counterweight, a counterweight bottom plate with a stand column and an oil cylinder, wherein the fixed counterweight is arranged below a rotary table and is fixed by using bolts; the oil cylinder is arranged on the fixed balance weight. The counterweight bottom plate with the stand column is placed on the frame, the movable counterweight is provided with holes, the required movable counterweight is sleeved on the stand column, the stand column is usually solid round steel, different movable counterweights can be adopted to be combined according to different weights of the counterweights, for example, a plurality of movable counterweights with the same specification can be adopted, and movable counterweights with different specifications can also be adopted to be combined. And then, the oil cylinder is adopted to lift the upright column until the upper surface of the movable balance weight is attached to the lower surface of the fixed balance weight, and then the energy accumulator maintains the pressure to compensate the leakage, so that the balance weight can be lifted for a long time.
However, when the conventional counterweight device is installed, the movable counterweight needs to be hung on the lower surface of the fixed counterweight by virtue of the counterweight bottom plate with the upright posts, so that the cost is high, and the installation mode is not flexible.
SUMMERY OF THE UTILITY MODEL
A first object of the utility model is to provide a counterweight device to alleviate the counterweight device cost that exists among the prior art because the activity counter weight needs articulate at fixed counterweight's lower surface with the help of the counterweight bottom plate that has the stand and lead to higher, and the inflexible technical problem of mounting means.
A second object of the present invention is to provide a crane, in order to alleviate the technical problem that the crane counterweight device that exists among the prior art and leads to because of the inflexible mounting means of current counterweight device articulates inefficiency.
Based on the first purpose, the utility model provides a counterweight device, which comprises a fixed counterweight, an oil cylinder and at least one movable counterweight, wherein the fixed counterweight is arranged below a rotary table of a crane, and the oil cylinder is connected with the fixed counterweight;
when one movable counterweight is arranged, a piston rod of the oil cylinder is connected with the movable counterweight;
when a plurality of movable weights are provided, all or any part of the movable weights can be connected with the piston rod as a whole.
Further, in some embodiments, the free end of the piston rod of the cylinder is provided with a projection; the movable counterweight comprises a counterweight block and a lifting part, the lifting part is fixedly connected with the counterweight block, the side wall of the lifting part is provided with a notch, the notch is positioned above the counterweight block, and the upper end of the lifting part is provided with a limiting part; the piston rod can enter the lifting part from the notch under the action of the rotary table, and the upper surface of the protruding part can be abutted against the lower surface of the limiting part;
when the movable counter weight is a plurality of, the balancing weight is provided with the through-hole, the promotion portion is provided with and is used for supplying the passageway that the piston rod passed, the passageway with the through-hole intercommunication.
Further, in some embodiments, the through hole is a circular hole, the lifting part penetrates into the circular hole, and the outer wall of the lifting part is attached to the circumferential surface of the circular hole; or the through hole comprises a major arc hole and a semi-long circular hole which are communicated, and the diameter of the major arc hole is larger than the width of the semi-long circular hole; the lifting part penetrates into the major arc hole, and the outer wall of the lifting part is attached to the circumferential surface of the major arc hole; the opening faces the semi-oblong hole and is communicated with the semi-oblong hole, so that the piston rod can move between the semi-oblong hole and the lifting part.
Further, in some embodiments, the fixed weight and the movable weight adjacent thereto are fixedly connected by a first connecting member.
Further, in some embodiments, when the number of the movable weights is multiple, two adjacent movable weights are fixedly connected through the second connecting member.
Further, in some embodiments, the fixed counterweight is provided with a first mounting plate provided with a first mounting hole; the first connecting piece comprises a first bolt and a first nut;
a second mounting plate is arranged on the upper surface of the balancing weight, and a second mounting hole is formed in the second mounting plate; a third mounting plate is arranged on the lower surface of the balancing weight, and a third mounting hole is formed in the third mounting plate; the second connecting piece comprises a second bolt and a second nut;
the first bolt penetrates through the first mounting hole and a second mounting hole close to the first mounting hole and is connected with the first nut; in two adjacent balancing weights, the second bolt passes through a third mounting hole of the balancing weight above and a second mounting hole of the balancing weight below, and is connected with the second nut.
Further, in some embodiments, the fixed counterweight is in a block shape, the fixed counterweight has two opposite short sides, the thickness surfaces of the two short sides of the fixed counterweight are respectively provided with a first groove, the first mounting plate is arranged in the first groove, and the lower surface of the first mounting plate and the lower surface of the fixed counterweight are in the same plane;
the thickness face of two short avris of balancing weight is provided with the second recess respectively, the second mounting panel with the third mounting panel all sets up in the second recess, just the upper surface of second mounting panel with the upper surface of balancing weight is in the coplanar, the lower surface of third mounting panel with the lower surface of balancing weight is in the coplanar.
Further, in some embodiments, the limiting part is plate-shaped, and the limiting part is provided with an accommodating groove, and the accommodating groove is communicated with the notch.
Further, in some embodiments, a positioning protrusion is disposed on an upper surface of the weight block, a recessed portion is disposed on a lower surface of the weight block and a lower surface of the fixed counterweight, and the positioning protrusion and a portion of the lifting portion above the weight block can be limited in the recessed portion.
Based on the second purpose, the utility model also provides a crane, include the counterweight device.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model provides a counterweight device, which comprises a fixed counterweight, an oil cylinder and at least one movable counterweight, wherein the fixed counterweight is arranged below a rotary table of a crane, and the oil cylinder is connected with the fixed counterweight; when one movable counterweight is arranged, a piston rod of the oil cylinder is connected with the movable counterweight; when a plurality of movable weights are provided, all or any part of the movable weights can be connected with the piston rod as a whole.
Based on this structure, the utility model provides a counterweight device is connected through the piston rod with the hydro-cylinder is direct with movable counterweight to can realize articulating movable counterweight at fixed counterweight's lower surface, need not to set up the counterweight bottom plate that has the stand, save the cost, and when movable counterweight is a plurality of, can be connected whole or arbitrary partial movable counterweight as whole with the piston rod, the mounting means is more nimble, simple. When the movable counterweight device is used, the fixed counterweight is arranged below the rotary table, the movable counterweight is directly placed on a frame of the crane, a piston rod of the oil cylinder extends out, the rotary table rotates to enable the piston rod to be connected with the movable counterweight, then the piston rod contracts, and the movable counterweight is lifted to a position where the upper surface of the movable counterweight is attached to the lower surface of the fixed counterweight.
The utility model provides a crane is owing to used the utility model provides a counterweight device, the mounting means is nimble, simple, and articulate efficiently.
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 embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a counterweight device according to an embodiment of the present invention;
fig. 2 is a front sectional view of a fixed counterweight and an oil cylinder in a first embodiment of the present invention;
fig. 3 is a schematic structural diagram of a movable counterweight in a counterweight device according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a movable counterweight in a counterweight device according to a second embodiment of the present invention;
fig. 5 is a bottom view of a movable counterweight in the counterweight device according to the second embodiment of the present invention;
fig. 6 is a cross-sectional view taken along line a-a of fig. 5.
Icon: 101-fixing a counterweight; 102-oil cylinder; 103-a balancing weight; 104-a lifting portion; 105-a limiting part; 106-gap; 107-projections; 108-a through hole; 109-a first bolt; 110-a second bolt; 111-a first mounting plate; 112-a second mounting plate; 113-a third mounting plate; 114-a first nut; 115-a second nut; 116-a positioning boss; 117-a recess; 118-major arc hole; 119-semi-oblong hole; 120-a piston rod; 121-hoisting box.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
Referring to fig. 1 to 3, the present embodiment provides a counterweight device, including a fixed counterweight 101, an oil cylinder 102, and at least one movable counterweight, wherein the fixed counterweight 101 is configured to be installed below a turntable of a crane, and the oil cylinder 102 is connected to the fixed counterweight 101; when the number of the movable counter weights is one, the piston rod 120 of the oil cylinder 102 is connected with the movable counter weight; when the movable weight is plural, all or any part of the movable weight can be connected to the piston rod 120 as a whole. That is, the piston rod 120 can be directly connected with the movable weight.
Based on this structure, the counterweight device that this embodiment provided is through being connected piston rod 120 with the movable weight of hydro-cylinder 102 is direct to can realize articulating the movable weight at the lower surface of fixed counterweight 101, need not to set up the counterweight bottom plate that has the stand, save the cost, and when the movable weight is a plurality of, can be connected piston rod 120 with whole or arbitrary partial movable weight as a whole, the mounting means is more nimble, simple. When the crane is used, the fixed counterweight 101 is arranged below the rotary table, the movable counterweight is directly placed on a frame of the crane, the piston rod 120 of the oil cylinder 102 extends out, the rotary table rotates to enable the piston rod 120 to be connected with the movable counterweight, then the piston rod 120 contracts, and the movable counterweight is lifted to a position where the upper surface of the movable counterweight is attached to the lower surface of the fixed counterweight 101.
It should be understood that, in actual use, the number and weight of the movable counterweights are usually selected according to actual needs, when a plurality of movable counterweights are provided, all the movable counterweights can be stacked on the frame, and then the piston rod 120 of the oil cylinder 102 is adopted to be connected with the lowermost movable counterweight, so that all the movable counterweights are hung as a whole; or all movable counterweights can be stacked on the frame, and then the piston rod 120 of the oil cylinder 102 is connected with the uppermost movable counterweight, so that the movable counterweights are hung on the fixed counterweight 101 one by one; any two or more adjacent movable counterweights can be connected together as a whole, that is, the movable counterweights are freely combined to form one or more hitching units, and then the piston rod 120 of the cylinder 102 is used for hitching the hitching unit or units.
In this embodiment, the fixed counterweight 101 is mounted on the bottom of the hoisting box 121 of the crane and fixed by bolts.
In some embodiments, the free end of the piston rod 120 of the cylinder 102 is provided with a projection 107; the movable counterweight comprises a counterweight block 103 and a lifting part 104, the lifting part 104 is fixedly connected with the counterweight block 103, the side wall of the lifting part 104 is provided with a notch 106, the notch 106 is positioned above the counterweight block 103, and the upper end of the lifting part 104 is provided with a limiting part 105; the piston rod 120 can enter the lifting part 104 from the notch 106 under the action of the turntable, and the upper surface of the bulge part 107 can be abutted against the lower surface of the limiting part 105; when the number of the movable weights is plural, the weight block 103 is provided with a through hole 108, and the lifting portion 104 is provided with a passage for the piston rod 120 to pass through, the passage being communicated with the through hole 108.
Specifically, the distance between the stopper portion 105 and the upper surface of the weight block 103 is larger than the thickness of the projection 107, so that the projection 107 enters the lifting portion 104 from the notch 106. Alternatively, as shown in fig. 2, the protrusion 107 may be an annular protrusion, which is welded to the free end of the piston rod 120. In this embodiment, the protrusion 107 is a flange. The width of the gap 106 is greater than the outer diameter of the flange to facilitate entry of the flange into the lifting portion 104.
It should be noted that the cylinder 102 may be a cylinder 102 with a flange on its piston rod 120, which is commonly used at present.
The counterweight device provided by the embodiment can directly hang the fixed counterweight 101 on the lower surface of the fixed counterweight 101 through the oil cylinder 102 by arranging the lifting part 104 with the notch 106 on the counterweight block 103, and a counterweight bottom plate with a stand column is not required to be arranged, so that the cost is saved, and the installation mode is more flexible and simpler. When the lifting counterweight device is used, the fixed counterweight 101 is arranged below the rotary table, the movable counterweight is directly placed on a frame of the crane, the piston rod 120 of the oil cylinder 102 extends out, the rotary table rotates, the free end of the piston rod 120 is located at the notch 106, the rotary table continues to rotate, the piston rod 120 enters the lifting portion 104, then the piston rod 120 contracts, so that the upper surface of the protruding portion 107 is abutted to the lower surface of the limiting portion 105, and the counterweight 103 is lifted to the position where the upper surface of the counterweight 103 is attached to the lower surface of the fixed counterweight 101.
Optionally, the lifting portion 104 is cylindrical, and the piston rod 120 can enter the lifting portion 104 from the notch 106 substantially in the radial direction of the lifting portion 104 under the action of the turntable.
In some embodiments, the fixed weight 101 and the movable weight adjacent thereto are fixedly connected by a first connector. The mode is convenient for a user to fix the fixed counterweight 101 and the movable counterweight adjacent to the fixed counterweight as required, so that the running with the full counterweight is realized, and the cylinder falling is prevented.
When the number of the movable counter weights is one, the accumulator can maintain pressure to compensate leakage, and long-time lifting of the counter weights is achieved.
When the number of the movable weights is plural, in order to hang all or any part of the balancing weights 103 as a whole, the balancing weights 103 are provided with through holes 108, and the lifting part 104 is provided with a passage for the piston rod 120 to pass through, the passage being communicated with the through holes 108. Optionally, the lifting portion 104 in this embodiment is a bucket open at both ends.
In some embodiments, the position-limiting portion 105 is plate-shaped, and the position-limiting portion 105 is provided with an accommodating groove, which is communicated with the opening 106.
Specifically, the limiting portion 105 is welded to the opening edge of the upper end of the hanging cylinder, the notch of the receiving groove faces the cylinder wall, and the receiving groove is communicated with the hanging cylinder, that is, as shown in fig. 3, the limiting portion 105 is a substantially U-shaped plate-shaped structure. The distance between the inner surfaces of the two groove walls of the accommodating groove is smaller than the outer diameter of the flange plate, so that the lower surface of the limiting part 105 is abutted to the upper surface of the flange plate.
Referring to fig. 3, in the present embodiment, the number of the through holes 108 is two, two through holes 108 are spaced apart along the length direction of the counterweight 103, and accordingly, there are two oil cylinders 102 and two lifting portions 104, so as to smoothly lift the movable counterweight. Meanwhile, the piston rods 120 enter the notches 106 along with the rotation of the turntable, that is, the movement tracks of the piston rods 120 are arc lines, so that the tracks of the two piston rods 120 entering the corresponding notches 106 are different, in order to ensure that the two piston rods 120 enter the corresponding notches 106 at the same time, the directions of the two notches 106 are slightly different, and during production and processing, the design can be performed according to the respective movement tracks of the two piston rods 120.
In some embodiments, the through-hole 108 is a circular hole through which the lifting portion 104 penetrates, and the outer wall of the lifting portion 104 conforms to the circumferential surface of the circular hole.
Optionally, the outer cylinder wall of the hanging cylinder is welded with the circumferential surface of the circular hole.
This is suitable for hanging the movable weights one by one on the fixed weight 101. Specifically, taking the number of the movable counterweights as two as an example, the two movable counterweights are placed on the frame, and the upper one is named as a first movable counterweight and the lower one is named as a second movable counterweight. The piston rod 120 of the oil cylinder 102 extends out, the rotary table rotates along a first direction (for example, clockwise), the free end of the piston rod 120 is located at the notch 106 of the first movable counterweight, the rotary table continues to rotate along the first direction, the piston rod 120 and the bulge 107 enter the hanging cylinder, then the piston rod 120 contracts, so that the upper surface of the bulge 107 is abutted against the lower surface of the limiting portion 105 of the first movable counterweight, the first movable counterweight is lifted to the position where the upper surface of the counterweight block 103 is attached to the lower surface of the fixed counterweight 101, and meanwhile, the first movable counterweight is connected with the fixed counterweight 101 through a first connecting piece.
Then, the turntable rotates in a second direction (for example, counterclockwise) opposite to the first direction to drive the fixed counterweight 101 and the first movable counterweight to move together, so that the piston rod 120 is located obliquely above the limiting portion 105, the piston rod 120 of the oil cylinder 102 extends out again, the turntable rotates in the first direction again, the free end of the piston rod 120 is located at the notch 106 of the second movable counterweight, the turntable continues to rotate in the first direction, the piston rod 120 and the protruding portion 107 enter the hanging cylinder, then the piston rod 120 contracts again, so that the upper surface of the protruding portion 107 abuts against the lower surface of the limiting portion 105 of the second movable counterweight, and the second movable counterweight is lifted to a position where the upper surface of the counterweight 103 is attached to the lower surface of the first movable counterweight.
In some embodiments, when the number of the movable weights is plural, two adjacent movable weights are fixedly connected by the second connecting member.
In the above two movable counter weights, the first movable counter weight and the second movable counter weight can be fixedly connected through the second connecting piece, so that the running with the full counter weight is realized, and the cylinder is prevented from falling.
The accumulator may be used to maintain the pressure to compensate for leakage, thereby enabling the weight to be pulled up for a long time.
In some embodiments, the fixed weight 101 is provided with a first mounting plate 111, the first mounting plate 111 being provided with a first mounting hole; the first connector includes a first bolt 109 and a first nut 114; a second mounting plate 112 is arranged on the upper surface of the balancing weight 103, and a second mounting hole is formed in the second mounting plate 112; a third mounting plate 113 is arranged on the lower surface of the counterweight block 103, and a third mounting hole is formed in the third mounting plate 113; the second connector includes a second bolt 110 and a second nut 115; the first bolt 109 passes through the first mounting hole and the second mounting hole adjacent to the first mounting hole, and is connected with the first nut 114; in two adjacent weights 103, the second bolt 110 passes through the third mounting hole of the upper weight 103 and the second mounting hole of the lower weight 103, and is connected to the second nut 115.
Optionally, when the fixed counterweight 101 and the movable counterweight adjacent to the fixed counterweight are required to be fixedly connected together, the first bolt 109 may sequentially pass through the first mounting hole and the second mounting hole from top to bottom, and may also sequentially pass through the second mounting hole and the first mounting hole from bottom to top.
Similarly, when two adjacent movable weights need to be fixed, the second bolt 110 may first pass through the third mounting hole of the upper counterweight block 103, and then pass through the second mounting hole of the lower counterweight block 103; or the mounting hole may first pass through the second mounting hole of the lower counterweight block 103 and then pass through the third mounting hole of the upper counterweight block 103.
Further, a first groove portion is formed in the edge of the first mounting plate 111, and the first groove portion is communicated with the first mounting hole; the second mounting plate 112 is provided with a second groove portion, and the second groove portion is communicated with the second mounting hole; the third mounting plate 113 is provided with a third groove portion, which communicates with the third mounting hole.
In this embodiment, the first groove portion, the second groove portion, and the third groove portion may be guide grooves, which facilitates pushing the first bolt 109 into the first mounting hole and the second mounting hole along the depth direction of the groove, or facilitating pushing the second bolt 110 into the second mounting hole and the third mounting hole along the depth direction of the groove.
It should be noted that, the first groove portion, the second groove portion, and the third groove portion may also be limiting grooves, and after the first screw rod penetrates into the first mounting hole and the second mounting hole, the first bolt 109 is prevented from moving out along the radial direction of the hole.
In some embodiments, the fixed weight 101 has a block shape, the fixed weight 101 has two opposite short sides, and the thickness surfaces of the two short sides of the fixed weight 101 are respectively provided with a first groove,
the first mounting plate 111 is arranged in the first groove, and the lower surface of the first mounting plate 111 and the lower surface of the fixed counterweight 101 are in the same plane; the thickness face of two short avris of balancing weight 103 is provided with the second recess respectively, and second mounting panel 112 and third mounting panel 113 all set up in the second recess, and the upper surface of second mounting panel 112 and the upper surface of balancing weight 103 are in the coplanar, and the lower surface of third mounting panel 113 and the lower surface of balancing weight 103 are in the coplanar.
Specifically, referring to fig. 3, the fixed weight 101 and the weight block 103 each have an oblong rectangular shape, the fixed weight 101 has two opposite short sides which are parallel to each other, and the fixed weight 101 also has two long sides which are arc-shaped. The quantity of first mounting panel 111 is two, respectively sets up a first mounting panel 111 in every first recess, two width limits and a length limit of first mounting panel 111 respectively with the cell wall and the tank bottom welding of first mounting groove.
Alternatively, the profile of the cross section of the weight 103 is the same as the profile of the cross section of the fixed weight 101, and the weights 103 of different weights have different thicknesses.
The number of the second mounting plate 112 and the third mounting plate 113 is two, each second mounting groove is provided with one second mounting plate 112 and one third mounting plate 113, two width edges and one length edge of the second mounting plate 112 are respectively welded with the groove wall and the groove bottom of the second mounting groove, and two width edges and one length edge of the third mounting plate 113 are respectively welded with the groove wall and the groove bottom of the second mounting groove.
The lower surface of the first mounting plate 111 and the lower surface of the fixed counterweight 101 are in the same plane, the upper surface of the second mounting plate 112 and the upper surface of the counterweight block 103 are in the same plane, and the lower surface of the third mounting plate 113 and the lower surface of the counterweight block 103 are in the same plane, so that the lower surface of the first mounting plate 111 and the upper surface of the second mounting plate 112 can be attached after the fixed counterweight 101 and the adjacent counterweight block 103 are attached, and the first bolt 109 and the first nut 114 can be conveniently used for fixing; after two adjacent counter weights 103 are attached, the upper surface of the second mounting plate 112 can be attached to the lower surface of the third mounting plate 113, and the second bolt 110 and the second nut 115 are convenient to fix.
In some embodiments, the upper surface of the weight block 103 is provided with a positioning protrusion 116, the lower surface of the weight block 103 and the lower surface of the fixed weight 101 are both provided with a recess 117, and the positioning protrusion 116 and the portion of the lifting portion 104 above the weight block 103 can be both limited in the recess 117.
Since a part of the lifting portion 104 and the limiting portion 105 are located above the upper surface of the counterweight 103, in order to make the lower surface of the fixed counterweight 101 fit with the upper surface of the adjacent counterweight 103, the lower surface of the fixed counterweight 101 in this embodiment is provided with a recessed portion 117 capable of accommodating the part of the limiting portion 105 and the lifting portion 104 located above the counterweight 103. Meanwhile, in order to more stably fix the fixed weight 101 and the movable weight adjacent thereto, the upper surface of the weight block 103 in the present embodiment is provided with a positioning protrusion 116, and the positioning protrusion 116 can be located in the recess 117. In this embodiment, the positioning protrusion 116 is annular, and further, the positioning protrusion 116 is a hollow circular truncated cone. Optionally, the hollow truncated cone is integrally formed with the weight block 103.
In order to make two adjacent balancing weights 103 fit, the lower surface of the balancing weight 103 in this embodiment is also provided with a recessed portion 117 for accommodating the positioning protrusion 116, the limiting portion 105 and the lifting portion 104 below the recessed portion above the balancing weight 103.
Example two
Referring to fig. 4 to 6, the present embodiment also provides a counterweight device, the counterweight device of the present embodiment describes another implementation scheme of the movable counterweight, and the technical solution of the first embodiment also belongs to the embodiment, and the description is not repeated here. The same reference numerals are used for the same components as in the first embodiment, and reference is made to the description of the first embodiment.
When a plurality of movable counterweights are provided, all the movable counterweights can be stacked on the frame and then connected with the lowermost movable counterweight by using the piston rod 120 of the oil cylinder 102, so that all the movable counterweights are hung as a whole.
In order to realize the above-mentioned hanging mode, in this embodiment, the through hole 108 includes a major arc hole 118 and a semi-major arc hole 119 which are communicated, and the diameter of the major arc hole 118 is greater than the width of the semi-major arc hole 119; the lifting part 104 penetrates into the major arc hole 118, and the outer wall of the lifting part 104 is attached to the circumferential surface of the major arc hole 118; the slit 106 faces the semi-oblong hole 119 and communicates with the semi-oblong hole 119 to enable the piston rod 120 to move between the semi-oblong hole 119 and the lifting portion 104. The lifting portion 104 in this embodiment is also a bucket open at both ends.
In use, all of the movable weights are stacked on the frame with the through holes 108 of the plurality of movable weights aligned and communicating. The turntable drives the piston rod 120 to move right above the semi-long round hole 119, then the piston rod 120 extends into the semi-long round hole 119 of the lowermost movable counterweight, then the turntable continues to rotate, so that the piston rod 120 enters the optimal arc hole 118 and the hanging cylinder, then the piston rod 120 contracts, the upper surface of the flange plate is abutted to the lower surface of the limiting portion 105 of the lowermost movable counterweight, and therefore all the movable counterweights are lifted.
EXAMPLE III
This embodiment provides a hoist, include the utility model provides a counterweight device.
The hoist that this embodiment provided, owing to used the utility model discloses the balanced heavy device that the embodiment one provided, the mounting means is nimble, simple, and articulates efficiently.
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; although the present invention has been described in detail with reference to the foregoing embodiments, it should 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; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A counterweight device is characterized by comprising a fixed counterweight (101), an oil cylinder (102) and at least one movable counterweight, wherein the fixed counterweight (101) is used for being installed below a rotary table of a crane, and the oil cylinder (102) is connected with the fixed counterweight (101);
when the number of the movable counter weights is one, a piston rod (120) of the oil cylinder (102) is connected with the movable counter weights;
when the movable weight is plural, all or any part of the movable weight can be connected with the piston rod (120) as a whole.
2. Balancing weight arrangement according to claim 1, characterized in, that the free end of the piston rod (120) of the cylinder (102) is provided with a protrusion (107); the movable counterweight comprises a counterweight block (103) and a lifting part (104), the lifting part (104) is fixedly connected with the counterweight block (103), a gap (106) is formed in the side wall of the lifting part (104), the gap (106) is located above the counterweight block (103), and a limiting part (105) is arranged at the upper end of the lifting part (104); the piston rod (120) can enter the lifting part (104) from the notch (106) under the action of the rotary table, and the upper surface of the protruding part (107) can be abutted against the lower surface of the limiting part (105);
when the movable counter weight is multiple, the counter weight (103) is provided with a through hole (108), the lifting part (104) is provided with a channel for the piston rod (120) to pass through, and the channel is communicated with the through hole (108).
3. Balancing weight arrangement according to claim 2, characterized in, that the through hole (108) is a circular hole, into which the lifting portion (104) penetrates, and that the outer wall of the lifting portion (104) abuts the circumferential surface of the circular hole; or the through hole (108) comprises a major arc hole (118) and a semi-long circular hole (119), wherein the major arc hole (118) and the semi-long circular hole (119) are communicated, and the diameter of the major arc hole (118) is larger than the width of the semi-long circular hole (119); the lifting part (104) penetrates into the major arc hole (118), and the outer wall of the lifting part (104) is attached to the circumferential surface of the major arc hole (118); the gap (106) faces the semi-oblong hole (119) and is communicated with the semi-oblong hole (119) so that the piston rod (120) can move between the semi-oblong hole (119) and the lifting part (104).
4. Balancing weight arrangement according to claim 2 or 3, characterized in, that the fixed weight (101) and the movable weight adjacent thereto are fixedly connected by a first connecting piece.
5. The balancing weight apparatus according to claim 4, wherein when the number of the movable weights is plural, adjacent two of the movable weights are fixedly connected by the second connecting member.
6. Counterweight arrangement according to claim 5, characterized in that said fixed counterweight (101) is provided with a first mounting plate (111), said first mounting plate (111) being provided with first mounting holes; the first connector comprises a first bolt (109) and a first nut (114);
a second mounting plate (112) is arranged on the upper surface of the balancing weight (103), and a second mounting hole is formed in the second mounting plate (112); a third mounting plate (113) is arranged on the lower surface of the balancing weight (103), and a third mounting hole is formed in the third mounting plate (113); the second connector comprises a second bolt (110) and a second nut (115);
the first bolt (109) passes through the first mounting hole and a second mounting hole close to the first mounting hole and is connected with the first nut (114); in two adjacent balancing weights (103), the second bolt (110) passes through a third mounting hole of the upper balancing weight (103) and a second mounting hole of the lower balancing weight (103), and is connected with the second nut (115).
7. The balancing weight apparatus according to claim 6, wherein the fixed weight (101) is in a block shape, the fixed weight (101) has two opposite short sides, and the thickness surfaces of the two short sides of the fixed weight (101) are respectively provided with a first groove, the first mounting plate (111) is arranged in the first groove, and the lower surface of the first mounting plate (111) is in the same plane with the lower surface of the fixed weight (101);
the thickness face on two short avris of balancing weight (103) is provided with the second recess respectively, second mounting panel (112) with third mounting panel (113) all sets up in the second recess, just the upper surface of second mounting panel (112) with the upper surface of balancing weight (103) is in the coplanar, the lower surface of third mounting panel (113) with the lower surface of balancing weight (103) is in the coplanar.
8. Balancing weight device according to claim 2 or 3, characterized in, that the limiting part (105) is plate-shaped and that the limiting part (105) is provided with an accommodating groove communicating with the opening (106).
9. Balancing weight device according to claim 2 or 3, characterized in that the upper surface of the balancing weight (103) is provided with a positioning protrusion (116), the lower surface of the balancing weight (103) and the lower surface of the fixed weight (101) are each provided with a recess (117), and the positioning protrusion (116) and the part of the lifting part (104) above the balancing weight (103) can each be confined in the recess (117).
10. A crane, comprising a counterweight device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921555429.1U CN210438314U (en) | 2019-09-18 | 2019-09-18 | Counterweight device and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921555429.1U CN210438314U (en) | 2019-09-18 | 2019-09-18 | Counterweight device and crane |
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| Publication Number | Publication Date |
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| CN210438314U true CN210438314U (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921555429.1U Active CN210438314U (en) | 2019-09-18 | 2019-09-18 | Counterweight device and crane |
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| CN (1) | CN210438314U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111704061A (en) * | 2020-05-15 | 2020-09-25 | 河北雷萨重型工程机械有限责任公司 | Installation device of combined counterweight and crane |
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2019
- 2019-09-18 CN CN201921555429.1U patent/CN210438314U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111704061A (en) * | 2020-05-15 | 2020-09-25 | 河北雷萨重型工程机械有限责任公司 | Installation device of combined counterweight and crane |
| CN111704061B (en) * | 2020-05-15 | 2022-03-01 | 河北雷萨重型工程机械有限责任公司 | Installation device of combined counterweight and crane |
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