Combined balance weight and engineering vehicle

Abstract

The utility model discloses a combined balance weight and an engineering vehicle. The combined balance weight comprises a lower box body, an upper box body and an execution component, the lower box body is fixed on the rotary table; the upper box body is slidably connected to the lower box body; the execution part is connected to the upper box body, the execution part is operated to drive the upper box body to conduct front-back position adjustment relative to the lower box body in the vehicle driving direction, and then the gravity center position of the whole machine is adjusted. The execution component comprises a pull ring, a steering assembly and a pull rope. The integral counterweight is designed into an upper part and a lower part, the lower box body is fixed and cannot be adjusted, the upper box body can move back and forth relative to the lower box body, and the position of the upper box body is changed by pulling the steel wire rope through the movement of the movable arm, so that the gravity center of the counterweight is changed, and the stability of the whole machine is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a combined counterweight and belongs to the engineering vehicle technical field. BACKGROUND

[0002] The counterweight mass and position of the hydraulic excavator are generally fixed and unadjustable, so the center of gravity of the excavator under the same posture is generally also fixed and unchangeable. For heavy load working conditions such as excavation, hoisting, etc. of large capacity buckets or large density materials, the center of gravity of the whole machine needs to be as far back as possible to improve the operation stability. For the leveling and transportation working conditions, the center of gravity needs to be as close to the rotation center as possible to reduce the inertia moment. The fixed center of gravity position cannot meet the above different operation requirements. SUMMARY

[0003] According to the deficiencies of the prior art, the utility model provides a combined counterweight, which designs the integral counterweight into two parts, thereby changing the center of gravity of the counterweight and improving the stability of the whole machine.

[0004] The utility model realizes the following technical scheme:

[0005] In the first aspect, the utility model provides a combined counterweight, which comprises:

[0006] The lower box body is fixed on the rotating table.

[0007] The upper box body is slidably connected to the lower box body.

[0008] The execution component is connected to the upper box body, and the center of gravity position of the whole machine is adjusted by operating the execution component to drive the upper box body to move forward and backward along the driving direction of the vehicle.

[0009] The execution component comprises a pull ring, a steering assembly and a pull rope. The pull ring is fixed to the middle region of the upper box body and close to the front end edge. When the upper box body needs to move forward relative to the lower box body, one end of the pull rope is connected to the boom, and the other end of the pull rope is connected to the pull ring. The boom is moved to pull the upper box body to move forward. When the upper box body needs to move backward relative to the lower box body, one end of the pull rope is connected to the boom, and the other end of the pull rope is connected to the pull ring through the steering assembly. The boom is moved to pull the upper box body to move backward.

[0010] In some embodiments, a guide fixing component is arranged between the lower box body and the upper box body, which can make the upper box body move forward and backward along the driving direction of the excavator and fix the upper box body on the lower box body after moving. The steering assembly is installed on the guide fixing component located at the middle region of the upper box body.

[0011] In some embodiments, the steering assembly comprises:

[0012] The pulley support is composed of a bottom plate and two opposite side plates fixed on the top surface of the bottom plate and vertically upwardly extended therefrom, the bottom plate is provided with a mounting hole for fixing on a guide fixing part, and each of the two side plates is provided with a hinge hole coaxially arranged;

[0013] The pulley is rotatably supported between the two side plates through a pin shaft matched with the hinge hole, and the pull rope is connected with the pull ring after passing around the pulley, so as to change the pulling direction of the pull rope.

[0014] In some embodiments, the top surface of the lower box body is provided with a plurality of threaded holes arranged at intervals along the length direction thereof, the upper box body is provided with a plurality of sliding grooves arranged at intervals along the length direction thereof and penetrating the upper and lower surfaces thereof, and one sliding groove corresponds to one threaded hole; each group of sliding grooves and threaded holes cooperates with one long bolt to form the guide fixing part, the long bolt is screwed in the threaded hole after penetrating the sliding groove, and the sliding groove and the loosened long bolt are matched to realize the linear guide function, and the tightened long bolt fixes the upper box body on the lower box body.

[0015] In some embodiments, the top surface of the lower box body is provided with three threaded holes, the upper box body is provided with three sliding grooves, and the upper box body is guided and fixed on the lower box body by three long bolts; the steering assembly is installed on the middle long bolt.

[0016] In some embodiments, the guide fixing part further comprises a gasket, the gasket is located on the top surface of the upper box body, and the gasket is coaxially arranged with the threaded hole; the long bolt is screwed in the threaded hole after penetrating the sliding groove and then the gasket.

[0017] In some embodiments, the bottom surface of the upper box body and the top surface of the lower box body are both provided with a plurality of sliding support surfaces arranged at intervals and in parallel and opposite to each other for reducing the sliding friction between the upper and lower box bodies.

[0018] In some embodiments, the bottom surface of the upper box body and the top surface of the lower box body are both provided with three sliding support surfaces in strip structure.

[0019] In the second aspect, the utility model provides a kind of engineering vehicle, including the combined weight of above.

[0020] In some embodiments, the engineering vehicle includes an excavator.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model designs the integral weight into two parts, the lower box body is fixed and not adjustable, and the upper box body is movable forward and backward relative to the lower box body; the position of the upper box body is changed by pulling the steel wire rope through boom movement, so as to change the gravity center of the weight and improve the stability of the whole machine. Attached Figure Description

[0023] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0024] In the attached diagram:

[0025] Figure 1 This is a schematic diagram of the combined counterweight of this utility model;

[0026] Figure 2 This is a schematic diagram of the lower housing of this utility model;

[0027] Figure 3 This is a schematic diagram of the upper housing of this utility model;

[0028] Figure 4 This is a schematic diagram of the pulley and pulley bracket of this utility model.

[0029] Attached diagram labels: 2-1, lower housing; 2-2, upper housing; 2-3, guide fixing component; 2-4, pull rope; 2-5, pulley; 2-6, pulley bracket; 2-7, threaded hole; 2-8, sliding support surface; 2-9, slide groove; 2-10, pull ring; 2-11, long bolt; 2-12, gasket.

[0030] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of the utility model, it needs to explain, unless another explicit provision and limitation, term " install " " link " " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirectly connected through intermediate medium. For ordinary skilled in the art, the above-mentioned term can be understood in the utility model with concrete meaning of specific situation.

[0034] As Figure 1 , Figure 2 , Figure 3 Indicated, a combination type counterweight, including lower box 2-1, upper box 2-2 and executing component, lower box 2-1 is fixed on rotating platform, upper box 2-2 is slidably connected on lower box 2-1, and the front and back position adjustment of upper box 2-2 relative to lower box 2-1 in the direction of travel of excavator is driven by operating executing component, to adjust the center of gravity position of whole machine further.

[0035] Further scheme, as Figure 1 , Figure 2 , Figure 3 Indicated, the bottom plane of upper box 2-2 and the top plane of lower box 2-1 are all provided with multiple sliding support surfaces 2-8 for reducing sliding friction of upper and lower boxes, which are arranged in parallel and opposite.

[0036] Preferred scheme, the bottom plane of upper box 2-2 and the top plane of lower box 2-1 are all provided with three sliding support surfaces 2-8 in strip structure. The bottom plane of upper box 2-2 and the top plane of lower box 2-1 are polished into three smooth surfaces in strip structure to form sliding support surfaces 2-8, or three smooth plates in strip structure are fixed on the bottom plane of upper box 2-2 and the top plane of lower box 2-1 to form sliding support surfaces 2-8.

[0037] Further scheme, as Figure 1 , Figure 2 , Figure 3 Indicated, lower box 2-1 and upper box 2-2 are provided with guiding and fixing component 2-3, which can make upper box 2-2 move forward and backward along the direction of travel of excavator and fix upper box 2-2 after moving on lower box 2-1.

[0038] Further scheme, as Figure 1 , Figure 2 , Figure 3As shown, the top surface of the lower box 2-1 is provided with a plurality of threaded holes 2-7 arranged along the length direction; the upper box 2-2 is provided with a plurality of grooves 2-9 arranged along the length direction and penetrating the upper and lower surfaces, and one groove 2-9 corresponds to one threaded hole 2-7; each group of the groove 2-9 and the threaded hole 2-7 cooperates with a long bolt 2-11 to form a guide fixing component 2-3, the long bolt 2-11 is screwed in the threaded hole 2-7 after penetrating the groove 2-9, and the groove 2-9 and the long bolt 2-11 after loosening cooperate to realize the linear guide function, and the long bolt 2-11 after tightening fixes the upper box 2-2 on the lower box 2-1.

[0039] Further, as shown in Figure 1 As shown, the guide fixing component 2-3 further includes a gasket 2-12, the gasket 2-12 is located on the top surface of the upper box 2-2, and the gasket 2-12 is coaxially arranged with the threaded hole 2-7, the long bolt 2-11 penetrates the gasket 2-12 first, and then is screwed in the threaded hole 2-7 after penetrating the groove 2-9.

[0040] Further, as shown in Figure 1 As shown, the execution component includes a pull ring 2-10, a steering assembly and a pull rope 2-4 (preferably a steel wire rope); the pull ring 2-10 is fixed at the middle region of the upper box 2-2 and close to the front end edge; the steering assembly is installed on the guide fixing component 2-3 at the middle region of the upper box 2-2; when the upper box 2-2 needs to move forward relative to the lower box 2-1, one end of the pull rope 2-4 is connected with the movable arm, and the other end of the pull rope 2-4 is connected with the pull ring 2-10, and the upper box 2-2 is pulled to move forward by the movable arm; when the upper box 2-2 needs to move backward relative to the lower box 2-1, one end of the pull rope 2-4 is connected with the movable arm, and the other end of the pull rope 2-4 is connected with the pull ring 2-10 after being connected with the steering assembly, and the upper box 2-2 is pulled to move backward by the movable arm.

[0041] Further, as shown in Figure 4 As shown, the steering assembly includes a pulley bracket 2-6 and a pulley 2-5; the pulley bracket 2-6 is composed of a bottom plate and two opposite side plates fixed on the top surface of the bottom plate and vertically upwardly extended therefrom, the bottom plate is provided with a mounting hole for fixing the long bolt 2-11, and each of the two side plates is provided with a hinge hole coaxially arranged; the pulley 2-5 is provided with a circumferentially extending annular groove, and the pulley 2-5 is rotatably supported between the two side plates through the hinge hole and the pin shaft, the pull rope 2-4 is connected with the pull ring 2-10 after passing through the pulley 2-5, thereby changing the pulling direction of the pull rope 2-4.

[0042] Preferably, the top surface of the lower box 2-1 is provided with three threaded holes 2-7, and the upper box 2-2 is provided with three sliding grooves 2-9, and the upper box 2-2 is guided and fixed on the lower box 2-1 by three long bolts 2-11; and the steering assembly is installed on the middle long bolt 2-11.

[0043] As can be seen from the above, the above-mentioned scheme is to design the integral fixed gravity center position counterweight into a combined counterweight with adjustable gravity center position. The lower box 2-1 is connected with the rotating table and the position is always fixed, and the position of the upper box 2-2 relative to the lower box 2-1 can be adjusted, and the gravity center position of the counterweight is adjusted by adjusting the front and rear positions of the upper box 2-2, so as to adjust the gravity center position of the whole machine. When the light load working condition, the upper box 2-2 is adjusted to the most front end, the stable force arm of the counterweight is the shortest, the moment generated is the smallest, and the working stability is not affected, and the minimum tail radius of the whole machine is suitable for working in a small space. When the heavy load working condition, the upper box 2-2 is adjusted to the last limit position, the gravity center is moved backward, the gravity center position of the counterweight is moved backward, the stable force arm of the counterweight is the longest, and the working stability is increased, but the tail radius is increased at this time, and the working in a relatively open area is suitable.

[0044] In summary, the utility model provides a combined counterweight, which designs the integral fixed gravity center position counterweight into a combined counterweight with adjustable gravity center position. The upper surface of the lower box 2-1 is provided with a plurality of threaded holes 2-7 and sliding support surfaces 2-8, and the sliding support surfaces 2-8 are used to reduce the sliding friction. The upper box 2-2 has a plurality of sliding grooves 2-9 penetrating the upper and lower surfaces, the lower surface has a sliding support surface 2-8 corresponding to the sliding support surface of the lower box 2-1, and the upper surface has a protruding pull ring 2-10. The guiding and fixing component 2-3 is mainly composed of a plurality of large-size long bolts 2-11 and gaskets 2-12, and when the upper box 2-2 needs to be adjusted, the long bolts 2-11 are loosened; when the adjustment is completed, the long bolts 2-11 are tightened to prevent the upper box 2-2 from sliding during operation. One end of the adjusting pull rope 2-4 is connected with the movable arm, and the other end is connected with the pull ring 2-10 on the top surface of the upper box 2-2, and the movable arm is moved to pull the upper box 2-2 to move forward and backward. The circumferential surface of the pulley 2-5 has an annular groove, the adjusting pull rope 2-4 can be clamped into the groove, and the adjusting pull rope 2-4 is mainly used to change the direction of the pulling force, realize the backward movement of the upper box 2-2, and the center has a circular hole. The bottom plate of the pulley bracket 2-6 is connected with the middle long bolt 2-11, the two side plates of the pulley bracket 2-6 have concentric holes, the pulley 2-5 is located between the two side plates, and the pulley center and the bracket center are connected together by using a pin shaft, and the pulley 2-5 can only rotate around the shaft center. When the upper box 2-2 needs to be moved from the last side to the most front side, the pull rope 2-4 does not need to pass through the pulley 2-5, and is directly connected with the upper box 2-2 and the movable arm.

[0045] The engineering vehicle provided by the utility model is described below, and the engineering vehicle described below can be correspondingly referred to the combined counterweight described above.

[0046] The engineering vehicle provided by the utility model can comprise the combined counterweight described in any one of the above embodiments.

[0047] The beneficial effects achieved by the engineering vehicle provided by the utility model are consistent with the beneficial effects achieved by the combined counterweight provided by the utility model, and thus will not be described here.

[0048] It should be noted that the above engineering vehicle can be an excavator.

[0049] In the specification provided herein, a large number of specific details are described. However, it can be understood that the embodiments of the utility model can be practiced without these specific details. In some examples, well-known methods, structures and techniques are not shown in detail in order not to obscure the understanding of the specification.

[0050] In addition, those skilled in the art can understand that although some embodiments described herein include certain features contained in other embodiments but not other features, combinations of features of different embodiments also mean to be within the protection scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use in a combined manner according to the known technical solutions and the technical problems to be solved by the present application.

[0051] The above is only the preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as above with the preferred embodiment, it is not intended to limit the utility model. Any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution range of the utility model, and make equivalent embodiments with equivalent changes. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the utility model are still within the scope of the utility model.

Claims

1. A modular counterweight, characterized in that, The utility model relates to a combined weight, which comprises: a lower box body fixed on a rotating table; an upper box body slidably connected to the lower box body; an execution component connected to the upper box body, which is used to adjust the position of the upper box body relative to the lower box body in the direction of vehicle travel, thereby adjusting the position of the center of gravity of the whole machine; wherein the execution component comprises a pull ring, a steering assembly and a pull rope; the pull ring is fixed on the middle region of the upper box body close to the front end; when the upper box body needs to move forward relative to the lower box body, one end of the pull rope is connected to a movable arm, and the other end of the pull rope is connected to the pull ring, so that the upper box body is pulled to move forward by the movement of the movable arm; when the upper box body needs to move backward relative to the lower box body, one end of the pull rope is connected to the movable arm, and the other end of the pull rope is first connected to the steering assembly and then connected to the pull ring, so that the upper box body is pulled to move backward by the movement of the movable arm.

2. The combined weight according to claim 1, wherein: a guiding and fixing component is arranged between the lower box body and the upper box body, which is used to move the upper box body forward and backward along the direction of the excavator and fix the upper box body on the lower box body after the movement; the steering assembly is installed on the guiding and fixing component arranged in the middle region of the upper box body.

3. A combination weight according to claim 2, wherein The steering assembly comprises: a pulley support composed of a bottom plate and two opposite side plates fixed on the top surface of the bottom plate and vertically extended upward from the top surface; the bottom plate is provided with a mounting hole for fixing on the guiding and fixing component; each of the two side plates is provided with a coaxial hinge hole; a pulley provided with a circumferentially extending annular groove; the pulley is rotatably supported between the two side plates by a pin shaft matched with the hinge holes; the pull rope is connected to the pull ring after passing through the pulley, thereby changing the direction of the pulling force of the pull rope.

4. The combined weight according to claim 2, wherein: the top surface of the lower box body is provided with a plurality of threaded holes arranged at intervals along the length direction; the upper box body is provided with a plurality of sliding grooves arranged at intervals along the length direction and penetrating the upper and lower surfaces of the upper box body, and one sliding groove corresponds to one threaded hole; each group of sliding grooves and threaded holes cooperates with a long bolt to form the guiding and fixing component; the long bolt passes through the sliding groove and is screwed in the threaded hole; the sliding groove and the loosened long bolt realize the linear guiding function; the tightened long bolt fixes the upper box body on the lower box body.

5. The combined weight according to claim 4, wherein: the top surface of the lower box body is provided with three threaded holes; the upper box body is provided with three sliding grooves; the three long bolts are used to guide and fix the upper box body on the lower box body; the steering assembly is installed on the middle long bolt.

6. The combined weight according to claim 4, wherein: the guiding and fixing component further comprises a gasket; the gasket is arranged on the top surface of the upper box body and coaxially arranged with the threaded hole; the long bolt passes through the gasket, then passes through the sliding groove and is screwed in the threaded hole.

7. The combined weight according to claim 1, wherein: the bottom surface of the upper box body and the top surface of the lower box body are each provided with a plurality of sliding support surfaces arranged at intervals and in parallel and opposite to each other, which are used to reduce the sliding friction between the upper and lower box bodies.

8. The combined counterweight according to claim 7, characterized in that: the upper box body and the lower box body are each provided with three sliding support surfaces in strip structure on the bottom plane and the top plane.

9. An engineering vehicle, characterized in that: it comprises a combined counterweight according to any one of claims 1 to 8.

10. The engineering vehicle according to claim 9, characterized in that: the engineering vehicle comprises an excavator.

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