CN212689036U - Adjustable counterweight device of land leveler - Google Patents
Adjustable counterweight device of land leveler Download PDFInfo
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- CN212689036U CN212689036U CN202020762593.6U CN202020762593U CN212689036U CN 212689036 U CN212689036 U CN 212689036U CN 202020762593 U CN202020762593 U CN 202020762593U CN 212689036 U CN212689036 U CN 212689036U
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Abstract
The utility model discloses an adjustable counterweight device of a land leveler, which comprises a rear counterweight device and a front counterweight device, wherein the rear counterweight device is connected with a rear frame transverse plate of the land leveler, and the front counterweight device is connected with a frame front panel of the land leveler; the rear counterweight device comprises a rear first counterweight body, a rear second counterweight body and a rear third counterweight body; the rear first counterweight body is of a Z-shaped structure and comprises a middle plate, a first side plate and a second side plate; the top surface of the middle plate is connected with the lower end surface of the transverse plate of the rear rack, the left end and the right end of the middle plate are respectively connected with the first side plate and the second side plate, and the second side plate is connected with the right side surface of the transverse plate of the rear rack; the bottom surface of the middle plate is connected with a rear second counterweight body, and the bottom surface of the rear second counterweight body is connected with a rear third counterweight body. The rear counterweight device and the front counterweight device can be conveniently adjusted according to actual use conditions, the stable and reliable front and rear axle matching is kept, the stability, reliability and construction efficiency of the grader are improved, and the performance of the grader can be exerted to a greater extent.
Description
Technical Field
The utility model belongs to the technical field of road engineering machinery, concretely relates to adjustable counter weight device of leveler.
Background
Under different working conditions, corresponding auxiliary equipment can be applied to the land leveling machine, the proportion of a front axle and a rear axle is changed by the aid of the auxiliary equipment, the rear axle is too heavy, and when the front axle is too light, the attachment gravity of front wheels can be reduced, so that the front axle floats, and the steering performance and the body stability of the land leveling machine are influenced; the rear axle is too light, and when the front axle is too heavy, the effective traction force of the land leveler can be reduced, so that the driving force is insufficient, and the construction efficiency of the land leveler is influenced. Reasonable front and rear axle matching is crucial to the stability of the machine body and the construction efficiency, and based on the principle, a reliable counterweight device is needed and is convenient to adjust, so that the front and rear axle matching can be kept stable when the land leveler is applied to different auxiliary tools, and the performance of the land leveler can be better exerted.
As shown in figure 1, the counterweight device of the land leveler in the prior art mainly comprises an upper fixing plate 1, a lower fixing plate 2 and two inclined connecting plates 3, wherein the two inclined connecting plates are used for connecting the upper fixing plate and the lower fixing plate and are symmetrically arranged at the middle position, 2 rows of symmetrically arranged through holes 4 are formed in the lower fixing plate 2, and two sides of each inclined connecting plate 3 are provided with trapezoidal angles 5. The counterweight device is used for welding treatment, and is positioned by manpower or a clamp during welding. When the motor grader is provided with the auxiliary tool under certain working conditions, the auxiliary tool is connected to the front panel or the cross plate of the rear frame of the motor grader. The stability of the body of the grader is improved by the counterweight device. The counterweight device has poor adaptability, a reasonable counterweight scheme is not made aiming at the whole machine performance and bridge load distribution of the land leveler, and the performance of the land leveler is difficult to play when different auxiliary tools are applied; in addition, when the counterweight device selects welding, welding operation needs to accurately ensure the welding quality, the counterweight needs to be positioned firstly, and the counterweight of the land leveler is clamped manually or by means of a clamp at present, so that the time and the labor are consumed, and the efficiency is low. In addition, the welded counterweight device is difficult to disassemble, and is difficult to adjust in time aiming at different auxiliary working conditions applied to the land leveler, so that the loads of the front axle and the rear axle can not be guaranteed and reasonably and accurately distributed, and the performance of the land leveler is not favorably exerted.
Disclosure of Invention
The utility model provides an adjustable counter weight device of leveler has solved the technical problem that above-mentioned counter weight device can't guarantee the stable and reliable front and back axle ratio of leveler.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: an adjustable counterweight device of a land leveler comprises a rear counterweight device and a front counterweight device, wherein the rear counterweight device is connected with a transverse plate of a rear frame of the land leveler, and the front counterweight device is connected with a front panel of the frame of the land leveler; the rear counterweight device comprises a rear first counterweight body, a rear second counterweight body and a rear third counterweight body; the rear first counterweight body is of a Z-shaped structure and comprises a middle plate, a first side plate and a second side plate; the top surface of the middle plate is connected with the lower end surface of the transverse plate of the rear rack, the left end and the right end of the middle plate are respectively connected with the first side plate and the second side plate, and the second side plate is connected with the right side surface of the transverse plate of the rear rack; the bottom surface of the middle plate is connected with the rear second counterweight body, and the bottom surface of the rear second counterweight body is connected with the rear third counterweight body.
Preferably, the front counterweight device comprises a front first counterweight body, a front second counterweight body, a front third counterweight body and a front fourth counterweight body; the front first counterweight body is of an L-shaped structure and comprises a long side plate and a short side plate which are vertically connected; the long side plate is connected with the front panel of the rack, the short side plate is provided with the front second counterweight body, and the front third counterweight body is connected with the front second counterweight body; the front third counterweight body is connected with the front fourth counterweight body.
Preferably, the rear first counterweight body is connected with the middle plate through a bolt; the rear second counterweight body is connected with the rear first counterweight body through a bolt; the rear third counterweight body is connected with the bottom surface of the rear second counterweight body through a bolt.
Preferably, the rear second counterweight body and the rear third counterweight body have the same structure and are both of a cuboid-like structure; the upper surface of the back second counterweight body and the back third counterweight body are both provided with protruding flat plates, and the height of each protruding flat plate is higher than that of the bolt and the nut. The effect of preventing the connecting bolt from being extruded when the counterweight body is installed and ensuring the installation reliability of the rear counterweight body is achieved.
Preferably, a plurality of positioning protrusions which are distributed at equal intervals are arranged on the long side plate along the vertical direction. The quick positioning function during the installation of other counterweight bodies is assisted.
Preferably, the top of the long side plate is rotatably connected with the box body shell, and the bottom of the box body shell is connected with the short side plate. Which acts to form an enclosed front weighting means.
Preferably, the front third counterweight body and the front fourth counterweight body have the same structure and are both of similar cuboid structures; and the bottom surfaces of the front third counterweight body and the front fourth counterweight body are provided with protruding flat plates.
Preferably, the front second balance weight body is connected with the short side plate through a bolt; the front third counterweight body is connected with the front second counterweight body through a bolt; the height of the protruding flat plate is higher than the height of a nut of the bolt. The effect of preventing the connecting bolt from being extruded when the counterweight body is installed and ensuring the installation reliability of the front counterweight body is achieved.
Preferably, the box body shell is rotatably connected with the long side plate through a shell positioning rotating shaft; the bottom of the box body shell is provided with a connecting plate, the connecting plate is provided with a connecting hole, the short side plate is provided with a through hole corresponding to the connecting hole, and the through hole is connected with the connecting hole through a positioning bolt and a nut. The effect of convenient dismouting has been played.
The utility model discloses the beneficial effect who reaches: including back counter weight device and preceding counter weight device, and the weight of back counter weight device and preceding counter weight device can be according to the convenient regulation of in-service use condition, keeps reliable and stable front and back axle ratio. The rear counterweight device can be adjusted, so that when the land leveler is applied to the front auxiliary tool and the middle auxiliary tool, stable and reliable front and rear axle matching is kept; the front counterweight device is adjustable, so that when the rear auxiliary tool is applied to the land leveler, the stable and reliable front and rear axle proportioning is kept. Preceding, back counter weight device can realize quick, accurate location, and bolted connection structure does benefit to installation and dismantlement, and device reasonable in design, stability is strong, has improved the stability, reliability and the efficiency of construction of leveler, can furthest performance of leveler.
Drawings
FIG. 1 is a diagram of a prior art grader counterweight arrangement;
fig. 2 is a front view of the rear counterweight device of the present invention;
fig. 3 is a right side view of the rear weighting device of the present invention;
fig. 4 is a schematic structural view of the front counterweight device of the present invention;
fig. 5 is a front view of the front counterweight device of the present invention;
fig. 6 is a bottom view of the front third counterweight body of the present invention;
FIG. 7 is a projection of a force point of the grader on a horizontal axis;
in the figure: 1-1-transverse plate of rear frame; 1-2-rear first counterweight body; 1 a-a middle plate; 1 b-a first sideboard; 1 c-a second sideboard; 1-3-bolt; 1-4-connecting gaskets; 1-5-rear second counterweight body; 1-6-rear third counterweight body; 2-1-front panel of the frame; 2-2-front first counterweight body; 2 a-a long side plate; 2 b-short side plates; 2-3-positioning the projection; 2-4-case body shell; 2-5-positioning the rotating shaft by the shell; 2-6-positioning bolts; 2-7-nut; 2-9-front second counterweight body; 2-10-front third counterweight body; 2-11-front fourth counterweight body; 2-10-a-convex flat plate, 2-10-b-through hole, 2-10-c-threaded hole and 2-10-d-V-shaped groove; 3-1-connecting plate; 1-fixing the plate; 2-lower fixing plate; 3-inclined connecting plates; 4-a through hole; 5-trapezoid angle.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1-5, an adjustable counterweight device of a grader comprises a rear counterweight device and a front counterweight device, wherein the rear counterweight device is connected with a cross plate 1-1 of a rear frame of the grader, and the front counterweight device is connected with a front panel 2-1 of a frame of the grader. The rear counterweight device comprises a rear first counterweight body 1-2, a rear second counterweight body 1-5 and a rear third counterweight body 1-6. The rear first counterweight body 1-5 is of a Z-shaped structure and comprises a middle plate 1a, a first side plate 1b and a second side plate 1 c; the top surface of the middle plate 1a is connected with the lower end surface of the transverse plate 1-1 of the rear frame, the left end and the right end of the middle plate 1a are respectively connected with a first side plate 1b and a second side plate 1c, the first side plate 1b is connected with the bottom surface of the left end of the middle plate 1a, and the second side plate 1c is connected with the top surface of the right end of the middle plate 1 a. And the second side plate 1c is connected with the right side surface of the transverse plate 1-1 of the rear rack, and the first side plate 1b can assist the quick positioning of the rear second counterweight body and the rear third counterweight body during installation, so that the installation efficiency is improved. The bottom surface of the middle plate 1a is sequentially connected with a rear second counterweight body 1-5 and a rear third counterweight body 1-6 from top to bottom. In the embodiment, the middle plate 1a is detachably connected with a transverse plate 1-1 of the rear rack through bolts 1-3; the rear second counterweight body 1-5 is detachably connected with the middle plate 1a through a bolt 1-3; the rear third counterweight body 1-6 is detachably connected with the rear second counterweight body 1-5 through a bolt 1-3. The front counterweight device comprises a front first counterweight body 2-2, wherein the front first counterweight body 2-2 is of an L-shaped structure and comprises a long side plate 2a and a short side plate 2b which are vertically connected. The long side plate 2a is connected with a front panel 2-1 of the frame, and the short side plate 2b is provided with a front second counterweight body 2-9. The front second counter weight 2-9 is connected with a front third counter weight 2-10, and the third counter weight 2-10 can be connected with a plurality of other counter weights with the same structure as the front third counter weight 2-10 according to actual needs.
The rear first counter weight body 1-2 is of a Z-shaped structure, two side plates are perpendicular to the middle plate 1a, the second side plate 1c is connected with the right side face of the rear rack transverse plate 1-1 through bolts 1-3, and the middle plate 1a is connected with the lower end face of the rear rack transverse plate 1-1 through bolts 1-3. The bolts 1-3 are symmetrically distributed at left and right sides and are close to the edge of the counterweight body. When the first side plate 1b is installed on the second and the third back counterweight bodies, the second and the third counterweight bodies can be quickly positioned, and the installation efficiency is improved.
The rear second counterweight body 1-5 is of a cuboid-like structure, the counterweight body is provided with 4 through holes and 4 threaded holes, the through holes are used for connecting the rear second counterweight body 1-5 with the bolts 1-3 of the middle plate 1a, and the threaded holes are used for connecting the rear third counterweight body 1-6 with the bolts 1-3 of the rear second counterweight body 1-5. The upper surface of the rear second counterweight body 1-5 is provided with four convex flat plates 2-10-a which are distributed at four right angles of the upper surface, the heights of the convex flat plates 2-10-a are equal, the heights of the convex flat plates 2-10-a are higher than the heights of nuts of the connecting bolts 1-3 of the rear first counterweight body 1-2, the arrangement of the convex flat plates 2-10-a can prevent the connecting bolts 1-3 of the first counterweight body 1-2 from being extruded when the rear second counterweight body 1-5 is installed, and the installation reliability of the counterweight body is ensured. The rear third counter weight 1-6 is similar to the rear second counter weight 1-5 in structure, the four corners of the upper surface are provided with convex flat plates 2-10-a, and the convex flat plates 2-10-a are higher than the nut heights of the bolts 1-3.
The front counterweight device comprises a front first counterweight body 2-2, a front second counterweight body 2-9, a front third counterweight body 2-10 and a front fourth counterweight body 2-11; the short side plate 2b is provided with a front second counter weight body 2-9, the front second counter weight body 2-9 is connected with a front third counter weight body 2-10, and the front third counter weight body 2-10 is connected with a front fourth counter weight body 2-11. The front third counterweight body 2-10 and the front fourth counterweight body 2-11 have the same structure and are of cuboid-like structures. The bottom surfaces of the front third counter weight body 2-10 and the front fourth counter weight body 2-11 are provided with convex flat plates 2-10-a. The front second counterweight body 2-9 is connected with the short side plate 2b through a bolt 1-3; the front third counterweight body 2-10 is connected with the front second counterweight body 2-9 through a bolt 1-3; the height of the raised flat plate 2-10-a is higher than the height of the nut of the bolt 1-3. The effect of preventing the connecting bolt from being extruded when the counterweight body is installed and ensuring the installation reliability of the front counterweight body is achieved.
The top of the long side plate 2a is rotatably connected with the box body shell 2-4, and the bottom of the box body shell 2-4 is connected with the short side plate 2 b. The two sides of the upper end of the long side plate 2a retract inwards, the mounting position of the box body shell 2-4 is reserved, and the box body shell 2-4 is rotatably connected with the long side plate 2a through a shell positioning rotating shaft 2-5. The box body shell 2-4 can rotate around the positioning rotating shaft 2-5, when the box body shell 2-4 rotates to the front panel 2-1 of the grader frame, the front fourth counterweight body 2-11 and other counterweight body installation positions which need to be added can be reserved, the other counterweight bodies have the same structure with the front third counterweight body 2-10, and the height of the fourth counterweight body 2-11 can be adjusted according to the weight of the required counterweight body.
In the front counterweight device, a plurality of positioning bulges 2-10-a distributed at equal intervals are arranged on the long side plate 2a along the vertical direction, so that the rapid positioning during the installation of other counterweight bodies can be assisted. In this embodiment, the positioning protrusion 2-10-a is an inverted V-shape and is located in the middle of the long side plate 2 a. The bottom surface of the front second counterweight body 2-9 is tightly attached to the upper surface of the short side plate 2b of the front first counterweight body 2-2, the end surface of the front second counterweight body 2-9 provided with a V-shaped groove is tightly attached to the inner side of the long side plate, and the V-shaped groove and the inverted V-shaped positioning bulge 2-10-a structure can realize the rapid positioning of the front second counterweight body 2-9. The front second balance weight body 2-9 is provided with 4 through holes and 4 threaded holes, the through holes are used for connecting the front second balance weight body 2-9 with the bolts of the front first balance weight body 2-2, and the threaded holes are used for connecting the front third balance weight body 2-10 with the bolts of the front second balance weight body 2-9. As shown in fig. 6, the front third balance weight 2-10 mainly includes: the installation structure comprises a protruding flat plate 2-10-a, a through hole 2-10-b, a threaded hole 2-10-c and a V-shaped groove 2-10-d, and the positions of the through hole 2-10-b and the threaded hole 2-10-c of the adjacent additional counterweight body are exchanged to guarantee the installation of each additional counterweight body. The end face of the front third counterweight body 2-10 provided with the V-shaped groove 2-10-d is tightly attached to the inner side of the long edge plate 2a, and the V-shaped groove 2-10-d and the inverted V-shaped positioning bulge 2-3 structure can realize the rapid positioning of the front third counterweight body 2-10.
In the embodiment, the bottom of the box body shell 2-4 is provided with a connecting plate 3-1, the connecting plate is provided with a connecting hole, the short edge plate 2b is provided with a through hole corresponding to the connecting hole, a positioning bolt 2-6 sequentially penetrates through the through hole and the connecting hole and is matched with a nut 2-7 for connection, and the nut 2-7 and a gasket 1-4 are fixed on the lower side of the short edge plate 2b during connection. The number of the connecting holes is odd, and the connecting holes are uniformly distributed along the connecting plate at equal intervals. After the required counterweight body is installed, the box body shell 2-4 is fixedly connected with the short side plate 2b to form a closed front counterweight device. If the grader breaks down and needs to be moved away from a construction site, the other balance weights except the first balance weight can be detached, and the connecting hole in the connecting plate 3-1 can be used for connecting the traction steel wire cable lantern ring, so that the traction effect of the tractor on the grader is realized. And the front counterweight device is of a closed structure, so that the risk of unhooking of the steel wire cable lantern ring can be avoided, and the safety and the reliability are realized.
By adjusting the rear counterweight device, when the land leveler applies a front auxiliary tool (not limited to a front bulldozer) and a middle auxiliary tool (not limited to a middle scarifier), stable and reliable front and rear axle proportioning is kept; the front counterweight device is adjusted to ensure that the front and rear axle proportioning is stable and reliable when the grader is applied with a rear auxiliary tool (not limited to a rear soil loosening device). Preceding, back counter weight device can realize quick, accurate location, and bolted connection structure does benefit to installation and dismantlement, and device reasonable in design, stability is strong, has improved the stability, reliability and the efficiency of construction of leveler, can furthest performance of leveler.
In actual operation, the pre-installation position of the counterweight device is determined, stress analysis is performed on the land leveler, a mathematical moving point model is established on a horizontal axis by using a coordinate projection method, as shown in fig. 7, a horizontal vector of a projection point of the stress point of the land leveler is established, in the diagram, A is the pre-installation position of the rear counterweight device, B is the pre-installation position of the front counterweight device, and then the weight of the counterweight body is accurately calculated by using a vector method by combining the optimal ratio of the front axle and the rear axle and the moment balance condition of the land leveler.
When the land leveler is applied without an auxiliary tool:
G0＝F1+F2
F1L1＝F2L2
in the formula: o is the projected position of the center of gravity of the land leveler, O1Is the projection position of the supporting point of the rear axle, O2For the front axle support point projection position, F1Is the supporting force of the rear axle F2Is the front axle supporting force L1The projection distance L from the supporting point of the rear axle to the center of gravity2Projection distance G from front axle supporting point to center of gravity0The weight of the whole machine is the weight of the whole machine without auxiliary tools.
The optimal ratio of the rear axle and the front axle is F1:F2B, then L1:L2A, when the grader applies the auxiliary tool, performing weight calculation on the grader to ensure that:
G1＝G0+ΔGΔG′＝F1′+F2′
in the formula: g0The weight of the whole machine without auxiliary tools, kN; g1The weight of the whole machine is kN when the auxiliary tool and the counterweight device are applied; Δ G is the accessory weight, kN; Δ G' counterweight weight, kN; f1' is the supporting force, kN, borne by the rear axle when the auxiliary tool and the counterweight device are applied; f2' the supporting force applied to the front axle when the auxiliary tool and the counterweight device are applied, kN;
in order to realize the best proportion of the front axle and the rear axle, the following requirements are met:
F1′：F2′＝a:b
the following steps are required:
then:
in the formula: m is the projection position of the gravity center of the auxiliary tool; and N is the gravity center projection position of the counterweight device.
Assistive application example 1: when a front attachment (not limited to a front bulldozer) is added to M1, a rear counterweight is added at point N1(A), and Δ G,
Then:
in the formula: o is the gravity center projection position of the land leveler; m1The position of the center of gravity projection of the front auxiliary tool is obtained; n is a radical of1The position of the center of gravity projection of the front counterweight device;
-projecting the center of gravity of the front auxiliary tool to the projected distance of the center of gravity of the whole machine;
-the projection distance of the center of gravity of the rear counterweight device to the center of gravity of the whole machine; Δ G is the accessory weight, kN; Δ G' counterweight weight, kN.
Assistive application example 2: when an intermediate auxiliary tool (not limited to a ripper) is added to M2, a rear weight device is added at point N1(a), and Δ G,
Then:
in the formula: Δ G is the accessory weight, kN; Δ G' counterweight weight, kN; o is the gravity center projection position of the land leveler; m2The center of gravity projection position of the middle auxiliary tool is set; n is a radical of1The position of the center of gravity projection of the front counterweight device;
-the projection distance of the center of gravity of the intermediate auxiliary tool to the center of gravity of the complete machine;
-the projection distance of the center of gravity of the rear counterweight device to the center of gravity of the whole machine.
Under different working conditions, the structures and models of the front auxiliary tool and the middle auxiliary tool of the land leveler can be adjusted, the calculation method of the adjusting weight of the land leveler and the auxiliary tool application examples 1 and 2 are combined to calculate the weight of the rear weight, and delta G 'is arranged in an increasing mode'a<ΔG′b<ΔG′cFor example, in the rear counterweight device, the rear first counterweight body and the bolt device used for connecting the rear first counterweight body and the front transverse plate of the rear frame of the grader are of a rear first counterweight body structure, and the total weight of the rear first counterweight body and the bolt device is delta G'a(ii) a The rear second counterweight body and the bolt device used for connecting the rear second counterweight body and the rear first counterweight body are of rear second counterweight body structures, and the total weight of the rear second counterweight body and the bolt device is delta G'b-ΔG′a(ii) a The rear third counterweight body and the bolt device used for connecting the rear third counterweight body and the rear second counterweight body are all rear third counterweightHeavy body structure, the total weight of the heavy body structure is delta G'c-ΔG′b。
Assistive application example 3: when a rear auxiliary tool is added to M3, a front counterweight device is added at point N2(B), and Δ G,
Then:
in the formula: Δ G is the accessory weight, kN; Δ G' counterweight weight, kN; o is the gravity center projection position of the land leveler; m3The projection position of the gravity center of the rear auxiliary tool is shown; n is a radical of2The position of the center of gravity projection of the front counterweight device;
-projecting the center of gravity of the rear auxiliary tool to the projection distance of the center of gravity of the whole machine;
-the projection distance of the center of gravity of the front counterweight device to the center of gravity of the whole machine.
Under different working conditions, the structure and the model of the rear auxiliary tool of the land leveler can be adjusted, and the weight of the rear counterweight is obtained by combining the calculation method of the adjusting counterweight of the land leveler and the auxiliary tool application example 3 so as to increase the arrangement delta G'd<ΔG′e<ΔG′fFor example, a front first counterweight body, a box body shell, a positioning bulge, a shell positioning rotating shaft, a connecting plate on the box body shell, a bolt, a nut and a gasket used for connecting the box body shell and a short edge plate in the front counterweight device, and a bolt, a nut and a gasket used for connecting the front first counterweight body and a front panel of a grader rack are all of a first counterweight body structure, and the total weight of the first counterweight body structure is delta G'd(ii) a The front second counterweight body and accessories such as bolts used for connecting the front second counterweight body and the front first counterweight body are of the structure of the front second counterweight body, and the total weight of the front second counterweight body and the accessories is delta G'e-ΔG′d(ii) a A front third counterweight body, a bolt used for connecting the front third counterweight body with the front second counterweight body, and the likeFittings are all front third counterweight body structures, and the total weight of the fittings is delta G'f-ΔG′e。
And calculating the weight of the rear counterweight by combining a land leveler adjusting counterweight calculation method, a front auxiliary tool application embodiment and a middle auxiliary tool application embodiment, arranging the weights in an increasing order, and distributing the weights to each counterweight body of the rear counterweight device to ensure stable and reliable front and rear axle matching under the application of the front auxiliary tool and the middle auxiliary tool. And (3) calculating the weight of the front counterweight by combining a land leveler adjusting counterweight calculation method and a rear auxiliary tool application embodiment, arranging the weights in an increasing order, and distributing the weights to each counterweight body of the front counterweight device to ensure stable and reliable front and rear axle matching under the application of the rear auxiliary tool.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (9)
1. An adjustable counterweight device of a land leveler is characterized by comprising a rear counterweight device and a front counterweight device, wherein the rear counterweight device is connected with a transverse plate of a rear rack of the land leveler, and the front counterweight device is connected with a front panel of the rack of the land leveler;
the rear counterweight device comprises a rear first counterweight body, a rear second counterweight body and a rear third counterweight body;
the rear first counterweight body is of a Z-shaped structure and comprises a middle plate, a first side plate and a second side plate; the top surface of the middle plate is connected with the lower end surface of the transverse plate of the rear rack, the left end and the right end of the middle plate are respectively connected with the first side plate and the second side plate, and the second side plate is connected with the right side surface of the transverse plate of the rear rack;
the bottom surface of the middle plate is connected with the rear second counterweight body, and the bottom surface of the rear second counterweight body is connected with the rear third counterweight body.
2. The adjustable counterweight apparatus of claim 1 wherein said front counterweight apparatus comprises a front first counterweight, a front second counterweight, a front third counterweight, and a front fourth counterweight; the front first counterweight body is of an L-shaped structure and comprises a long side plate and a short side plate which are vertically connected; the long side plate is connected with the front panel of the rack, the short side plate is provided with the front second counterweight body, and the front third counterweight body is connected with the front second counterweight body; the front third counterweight body is connected with the front fourth counterweight body.
3. The adjustable counterweight apparatus of a grader as in claim 1 wherein said rear first counterweight is bolted to said intermediate plate; the rear second counterweight body is connected with the rear first counterweight body through a bolt; the rear third counterweight body is connected with the bottom surface of the rear second counterweight body through a bolt.
4. The adjustable counterweight device of a grader as in claim 3, wherein the rear second counterweight body and the rear third counterweight body have the same structure and are both of a cuboid-like structure; the upper surface of the rear second counterweight body and the upper surface of the rear third counterweight body are both provided with protruding flat plates, and the height of each protruding flat plate is higher than that of each bolt.
5. The adjustable counterweight apparatus of a grader as in claim 2 wherein the long side plate has a plurality of positioning protrusions disposed thereon in a vertical direction and spaced at equal intervals.
6. The adjustable counterweight apparatus of a grader as in claim 2 wherein the top of the long side plate is pivotally connected to the box housing and the bottom of the box housing is connected to the short side plate.
7. The adjustable counterweight device of a grader according to claim 2, wherein the front third counterweight body and the front fourth counterweight body have the same structure and are of a cuboid-like structure; and the bottom surfaces of the front third counterweight body and the front fourth counterweight body are provided with protruding flat plates.
8. The adjustable counterweight apparatus of a grader as in claim 7 wherein said front second counterweight is bolted to said short edge plate; the front third counterweight body is connected with the front second counterweight body through a bolt; the height of the protruding flat plate is higher than the height of a nut of the bolt.
9. The adjustable counterweight device of a grader as in claim 6 wherein the box housing is pivotally connected to the long side plate by a housing positioning pivot; the bottom of the box body shell is provided with a connecting plate, the connecting plate is provided with a connecting hole, the short side plate is provided with a through hole corresponding to the connecting hole, and the through hole is connected with the connecting hole through a positioning bolt and a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020762593.6U CN212689036U (en) | 2020-05-09 | 2020-05-09 | Adjustable counterweight device of land leveler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020762593.6U CN212689036U (en) | 2020-05-09 | 2020-05-09 | Adjustable counterweight device of land leveler |
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| CN212689036U true CN212689036U (en) | 2021-03-12 |
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| CN202020762593.6U Active CN212689036U (en) | 2020-05-09 | 2020-05-09 | Adjustable counterweight device of land leveler |
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