Counterweight mechanism for a construction machine

Abstract

The application discloses a counterweight mechanism of an engineering machine, which comprises a counterweight adjusting mechanism, a clamping fixing mechanism and a limiting mechanism. The counterweight adjusting mechanism comprises a machine body, a machine shell arranged on the machine body, a protection part and an adjusting part arranged on the machine shell, a stabilizing part arranged on the adjusting part, and a sliding part arranged on the machine shell. The clamping fixing mechanism comprises a first storage groove, a through hole and an insertion slot arranged on the adjusting part, a clamping part arranged in the first storage groove, and an extrusion part and a rebound part arranged on the clamping part. The limiting mechanism comprises a second storage groove arranged on the adjusting part, a reset part arranged in the second storage groove, and a limiting part arranged on the extrusion part. Through the arrangement of the counterweight adjusting mechanism, the clamping fixing mechanism and the limiting mechanism, the machine body counterweight can be conveniently adjusted by the staff, the air cylinder can be protected, and the service life of the air cylinder is prolonged.

Description

Technical Field

[0001] This invention relates to the field of counterweight technology for engineering machinery, and more particularly to a counterweight mechanism for engineering machinery. Background Technology

[0002] Current construction machinery such as excavators are equipped with counterweight mechanisms. One method involves installing a lead block at the rear of the excavator or filling the inside of the machine casing with cement. This method makes it impossible to adjust the counterweight, which is quite limiting. Another method is to equip the machine casing with a weight. When adjusting the position of the counterweight, it is locked by a cylinder piston rod. If the cylinder piston rod malfunctions, the hydraulic lock may fail, causing the counterweight to slide. If the counterweight slides and hits the construction machinery body, it can easily damage the machinery and may also cause personal injury. Summary of the Invention

[0003] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0004] In view of the fact that the existing counterweight mechanism of the above-mentioned construction machinery relies on the cylinder piston rod for locking, and that when the cylinder piston rod fails, the hydraulic lock may fail, causing the counterweight to slide and collide with the construction machinery body, the present invention is proposed.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a counterweight mechanism for engineering machinery, comprising: a counterweight adjustment mechanism including a body, a housing disposed on the body, a protective part and an adjustment part disposed on the housing, a stabilizing part disposed on the adjustment part, and a sliding part disposed on the housing; a clamping and fixing mechanism including a first placement slot, a through hole and a slot disposed on the adjustment part, a clamping part disposed inside the first placement slot, and a pressing part and a spring-back part disposed on the clamping part; and a limiting mechanism including a second placement slot disposed on the adjustment part, a reset part disposed inside the second placement slot, and a limiting part disposed on the pressing part.

[0006] As a preferred embodiment of the counterweight mechanism of the engineering machinery described in this invention, the protective part includes a flip plate and a socket disposed on the housing, a baffle disposed inside the socket, a handle disposed on the baffle, and bolts disposed on the baffle.

[0007] As a preferred embodiment of the counterweight mechanism of the engineering machinery described in this invention, the adjusting part includes a cylinder disposed inside the housing, a push rod disposed on the cylinder, a push plate and a lead block disposed on the push rod, and a first through-hole disposed on the lead block.

[0008] As a preferred embodiment of the counterweight mechanism of the engineering machinery described in this invention, the stabilizing part includes a second through-hole disposed on the lead block and a limiting rod disposed inside the second through-hole.

[0009] As a preferred embodiment of the counterweight mechanism of the engineering machinery described in this invention, the sliding part includes a long rod disposed inside the housing and a roller disposed on the long rod.

[0010] As a preferred embodiment of the counterweight mechanism of the engineering machinery described in this invention, the clamping part includes a clamping block disposed inside the first storage slot, an arc-shaped groove disposed on the clamping block, a first arc-shaped block disposed inside the arc-shaped groove, a first V-shaped cross-section disposed on the first arc-shaped block, a fixing rod disposed on the limiting rod, a second arc-shaped block disposed on the fixing rod, and a second V-shaped cross-section disposed on the second arc-shaped block.

[0011] As a preferred embodiment of the counterweight mechanism of the engineering machinery described in this invention, the extrusion part includes an extrusion rod disposed on the clamping block, a trapezoidal cut disposed on the extrusion rod, a third through-hole disposed on the push rod, and a trapezoidal block disposed inside the third through-hole.

[0012] As a preferred embodiment of the counterweight mechanism of the engineering machinery described in this invention, the rebound part includes a rod disposed inside the slot and a first spring disposed on the clamping block.

[0013] As a preferred embodiment of the counterweight mechanism of the engineering machinery described in this invention, the reset part includes a second spring disposed inside the second storage slot and a fixing ring disposed inside the second storage slot.

[0014] As a preferred embodiment of the counterweight mechanism of the engineering machinery described in this invention, the limiting part includes a rack and a rotating shaft disposed inside the second through-hole, a gear and an elliptical block disposed on the rotating shaft, and a plane disposed on the elliptical block.

[0015] The beneficial effects of this invention are as follows: By setting up a counterweight adjustment mechanism, the position of the lead block inside the machine housing can be flexibly adjusted by a cylinder, resulting in less resistance when the lead block moves. By setting up a clamping and fixing mechanism, the position of the lead block can be fixed after it has moved to the desired position. By setting up a limiting mechanism, the cylinder can be completely stopped after the lead block reaches the designated position, allowing the cylinder to extend and retract freely. The lead block can be fixed by the recovery of the first and second springs, without the need for manual adjustment. When adjusting the position of the lead block in the future, only the cylinder needs to be activated for adjustment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0017] Figure 1 This is a schematic diagram of the overall structure of the counterweight mechanism of the engineering machinery of the present invention.

[0018] Figure 2 This is a schematic diagram of the external structure of the counterweight mechanism housing of the engineering machinery of the present invention.

[0019] Figure 3 This is a schematic diagram of the protective structure of the counterweight mechanism of the engineering machinery of the present invention.

[0020] Figure 4 This is a schematic diagram of the internal structure of the counterweight mechanism housing of the engineering machinery of the present invention.

[0021] Figure 5 This is a schematic diagram of the counterweight mechanism limit rod structure of the engineering machinery of the present invention.

[0022] Figure 6 This is a schematic diagram of the counterweight mechanism fixing rod structure of the engineering machinery of the present invention.

[0023] Figure 7 This is a schematic diagram of the internal structure of the lead block in the counterweight mechanism of the engineering machinery of the present invention.

[0024] Figure 8 This is a schematic diagram of the counterweight adjustment section of the engineering machinery of the present invention.

[0025] Figure 9 The present invention relates to a counterweight mechanism for engineering machinery. Figure 8 Enlarged structural diagram at point A in the middle.

[0026] Figure 10 This is a schematic diagram of the cross-sectional structure of the lead block in the counterweight mechanism of the engineering machinery of the present invention.

[0027] Figure 11 This is a schematic diagram of the clamping and fixing mechanism in the counterweight mechanism of the engineering machinery of the present invention.

[0028] Figure 12 This is a schematic diagram of the meshing structure between the limiting part of the counterweight mechanism and the rack and pinion of the engineering machinery of the present invention.

[0029] Figure 13 This is a schematic diagram of the counterweight mechanism limiting part of the engineering machinery of the present invention.

[0030] Figure 14 This is a schematic diagram of the counterweight mechanism clamping part of the engineering machinery of the present invention. Detailed Implementation

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0033] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0034] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0035] Example 1

[0036] Reference Figure 1 - Figure 10 A counterweight mechanism for engineering machinery is provided, including a counterweight adjustment mechanism 100, comprising a body 101, a housing 102 disposed on the body 101, a protective part 103 and an adjustment part 104 disposed on the housing 102, a stabilizing part 105 disposed on the adjustment part 104, and a sliding part 106 disposed on the housing 102.

[0037] The casing 102 is located at the rear of the body 101. The interior of the casing 102 is used to place heavy objects to adjust the balance of the body 101.

[0038] Furthermore, the protective part 103 includes a flip plate 103a and a socket 103b disposed on the housing 102, a baffle 103c disposed inside the socket 103b, a handle 103d disposed on the baffle 103c, and a bolt 103e disposed on the baffle 103c.

[0039] The flip plate 103a is located on the side away from the machine body 101. The flip plate 103a is connected to the bottom of the machine housing 102 by a hinge, which makes it convenient for the staff to open the machine housing 102 and put heavy objects into the machine housing 102.

[0040] The socket 103b is located on the side wall of the housing 102, and the socket 103b is located on the side adjacent to the baffle 103c.

[0041] The handle 103d is installed on the edge of the baffle 103c.

[0042] One end of bolt 103e passes through flip plate 103a and baffle 103c in sequence and is threadedly connected to housing 102.

[0043] Specifically, after the heavy object is placed inside the housing 102, the operator flips the flip plate 103a upwards and inserts the baffle 103c into the socket 103b until one side of the handle 103d contacts one side of the housing 102. At this point, the operator can tighten the bolt 103e to fix the flip plate 103a and the baffle 103c together.

[0044] Furthermore, the adjustment unit 104 includes a cylinder 104a disposed inside the housing 102, a push rod 104b disposed on the cylinder 104a, a push plate 104c and a lead block 104d disposed on the push rod 104b, and a first through-hole 104e disposed on the lead block 104d.

[0045] The cylinder 104a is installed in the middle of the inner wall of the housing 102.

[0046] There are two push plates 104c, and both push plates 104c are fixedly mounted on the side wall of push rod 104b.

[0047] Among them, lead block 104d is located between two push plates 104c, and lead block 104d is composed of two lead plates, one above the other.

[0048] Specifically, the push rod 104b is located inside the first through-hole 104e. When the cylinder 104a extends or retracts, it can drive the push rod 104b to move together. The push rod 104b drives the push plate 104c to push the lead block 104d to move.

[0049] Furthermore, the stabilizing part 105 includes a second through-hole 105a disposed on the lead block 104d, and a limiting rod 105b disposed inside the second through-hole 105a.

[0050] There are two second penetrations 105a, which are evenly distributed on both sides of the first penetration 104e.

[0051] The two ends of the limiting rod 105b are connected to the inner wall of the housing 102, and the cross-section of the end of the limiting rod 105b is semi-circular.

[0052] Specifically, the curved sides of the two limiting rods 105b are far apart from each other, and the curved surfaces are in contact with the inner wall of the second through-hole 105a, which restricts the position of the lead block 104d, so that the lead block 104d can only move left and right.

[0053] Furthermore, the sliding part 106 includes a long rod 106a disposed inside the housing 102, and a roller 106b disposed on the long rod 106a.

[0054] The two ends of the long rod 106a are connected to the inner wall of the housing 102, and the length direction of the long rod 106a is perpendicular to the length direction of the limiting rod 105b.

[0055] Specifically, there are multiple long rods 106a, which are evenly distributed inside the housing 102.

[0056] Among them, roller 106b is sleeved on the side wall of long rod 106a, and the top of roller 106b contacts the bottom of lead block 104d.

[0057] Specifically, the roller 106b makes it easier to push the lead block 104d.

[0058] Operating Procedure: To ensure greater stability of the machine body 101 during operation, the counterweight inside the machine casing 102 needs to be adjusted. This is achieved by the operator activating cylinder 104a. Cylinder 104a drives push rod 104b to extend and retract. Simultaneously, push rod 104b drives push plate 104c. When push plate 104c contacts the side wall of lead block 104d, it continues to move, pushing lead block 104d. Lead block 104d slides on the side wall of limit rod 105b, while simultaneously moving roller 106b. Once lead block 104d reaches a stable position, the operator stops cylinder 104a (note that stopping cylinder 104a means the cylinder 104a remains stationary; the gas inside cylinder 104a must remain constant and stable for the position of lead block 104d to be stable).

[0059] Example 2

[0060] Reference Figure 1 - Figure 14 The difference between this embodiment and the first embodiment is that the clamping and fixing mechanism 200 includes a first storage groove 201, a through hole 202 and a slot 203 disposed on the adjustment part 104, a clamping part 204 disposed inside the first storage groove 201, and a squeezing part 205 and a spring-loaded part 206 disposed on the clamping part 204.

[0061] The lead block 104d has a first storage slot 203, a through hole 202 and a slot 203, and the first storage slot 201 is interconnected with the through hole 202 and the slot 203 respectively.

[0062] Specifically, there are two slots 203, which are located on both sides of the first storage slot 201.

[0063] Furthermore, the clamping part 204 includes a clamping block 204a disposed inside the first storage slot 201, an arc-shaped groove 204b disposed on the clamping block 204a, a first arc-shaped block 204c disposed inside the arc-shaped groove 204b, a first V-shaped cut surface 204d disposed on the first arc-shaped block 204c, a fixing rod 204e disposed on the limiting rod 105b, a second arc-shaped block 204f disposed on the fixing rod 204e, and a second V-shaped cut surface 204g disposed on the second arc-shaped block 204f.

[0064] The four walls of the clamping block 204a are in contact with the inner wall of the first storage groove 201, making the movement of the clamping block 204a inside the first storage groove 201 more stable.

[0065] Among them, an arc-shaped groove 204b is opened on the side of the clamping block 204a near the limiting rod 105b.

[0066] The arc of the first arc block 204c is the same as the arc of the arc groove 204b.

[0067] Specifically, there are multiple first arc-shaped blocks 204c, which are evenly distributed on the inner wall of the arc-shaped groove 204b.

[0068] The first V-shaped cut surface 204d is located on the side away from the arc groove 204b.

[0069] Among them, a fixing rod 204e is installed on the side of the limiting rod 105b near the first arc-shaped block 204c.

[0070] Specifically, the cross-section of the end of the fixing rod 204e is semi-circular, and the radius of the cross-section of the end of the fixing rod 204e is smaller than the radius of the cross-section of the end of the limiting rod 105b.

[0071] Among them, a second arc-shaped block 204f is installed on the side of the fixing rod 204e away from the limiting rod 105b.

[0072] Specifically, there are multiple second arc-shaped blocks 204f, which are evenly distributed on the side wall of the fixed rod 204e, and the distance between any two second arc-shaped blocks 204f is the same as the distance between any two first arc-shaped blocks 204c.

[0073] Specifically, when the position of the lead block 104d is fixed, each first arc block 204c is located between two second arc blocks 204f.

[0074] Among them, the second arc-shaped block 204f has a second V-shaped cut surface 204g on the side away from the fixed rod 204e.

[0075] Specifically, when the first arc-shaped block 204c comes into contact with the second arc-shaped block 204f, guided by the first V-shaped cut surface 204d and the second V-shaped cut surface 204g, the first arc-shaped block 204c can be more easily inserted between the two second arc-shaped blocks 204f.

[0076] Furthermore, the extrusion section 205 includes an extrusion rod 205a disposed on the clamping block 204a, a trapezoidal cut 205b disposed on the extrusion rod 205a, a third through-hole 205c disposed on the push rod 104b, and a trapezoidal block 205d disposed inside the third through-hole 205c.

[0077] Among them, the extrusion rod 205a is installed at the center position of the side of the clamping block 204a away from the arc groove 204b, and the end of the extrusion rod 205a away from the clamping block 204a passes through the through hole 202.

[0078] The trapezoidal cut 205b is provided on the side wall of the extrusion rod 205a, and the extrusion rod 205a is located at the end away from the clamping block 204a.

[0079] Among them, the cross section of the trapezoidal cut 205b is a right trapezoid, and the inclined surface of the trapezoidal cut 205b is located on the side away from the clamping block 204a.

[0080] Specifically, there are two trapezoidal cuts 205b, which are evenly distributed on the side wall of the extrusion rod 205a.

[0081] The third through-hole 205c is located in the middle of the side wall of the push rod 104b.

[0082] Specifically, the end of the extrusion rod 205a with the trapezoidal cut 205b is located inside the third through-hole 205c.

[0083] Among them, the trapezoidal block 205d is installed on the inner wall of the third through-hole 205c, and there are two trapezoidal blocks 205d, which are located on both sides of the extrusion rod 205a respectively.

[0084] Specifically, the cross section of trapezoidal block 205d is a right trapezoid, and the inclined surface of trapezoidal block 205d is parallel to the inclined surface of trapezoidal cut 205b. When the first arc block 204c is located between the two second arc blocks 204f, part of the upper inclined surface of trapezoidal block 205d is in contact with part of the upper inclined surface of trapezoidal cut 205b.

[0085] Furthermore, the spring-back section 206 includes a insertion rod 206a disposed inside the slot 203, and a first spring 206b disposed on the clamping block 204a.

[0086] One end of the insertion rod 206a is located inside the slot 203, and the other end of the insertion rod 206a is connected to the clamping block 204a.

[0087] The first spring 206b is sleeved on the side wall of the extrusion rod 205a, and one end of the first spring 206b is in contact with the inner wall of the first storage groove 201, while the other end of the first spring 206b is in contact with the clamping block 204a.

[0088] Operation process: When the trapezoidal block 205d moves, it can compress the inclined surface of the trapezoidal cut 205b, causing the compression rod 205a to move towards the interior of the third through-hole 205c. The compression rod 205a drives the clamping block 204a to move, and the clamping block 204a drives the insertion rod 206a to retract into the interior of the slot 203. At the same time, the clamping block 204a causes the first spring 206b to contract. Simultaneously, the clamping block 204a causes the first arc-shaped block 204c to disengage from between the two second arc-shaped blocks 204f. When the trapezoidal block 205d moves to the bottom of the inclined surface of the trapezoidal cut 205b, the push rod 104b continues to move, causing the trapezoidal block 205d to move. The trapezoidal block 205d then causes the pressing rod 205a to move, which in turn causes the lead block 104d to move. When the ideal position is reached, the pushing force on the trapezoidal block 205d is removed, allowing the trapezoidal block 205d to return to its initial position. The first arc block 204c can then be reinserted between the two second arc blocks 204f.

[0089] Example 3

[0090] Reference Figure 1 - Figure 14 The difference between this embodiment and the above embodiments is that the limiting mechanism 300 includes a second storage slot 301 disposed on the adjusting part 104, a reset part 302 disposed inside the second storage slot 301, and a limiting part 303 disposed on the squeezing part 205.

[0091] A second storage slot 301 is provided on the lead block 104d, and the second storage slot 301 is connected to the first through opening 104e.

[0092] Furthermore, the reset part 302 includes a second spring 302a disposed inside the second storage slot 301, and a retaining ring 302b disposed inside the second storage slot 301.

[0093] One end of the second spring 302a is connected to the push plate 104c, and the other end of the second spring 302a is connected to the inner wall of the second storage slot 301.

[0094] The fixing ring 302b is fixedly installed inside the second storage slot 301, and the fixing ring 302b is sleeved on the side wall of the push rod 104b.

[0095] The second spring 302a is sleeved on the outside of the fixed ring 302b.

[0096] Specifically, there are two fixing rings 302b, located on both sides of the extrusion rod 205a. When the second spring 302a is not under force, the first arc-shaped block 204c is inserted between the two second arc-shaped blocks 204f. The distance between the push plate 104c and the fixing ring 302b is 1-3mm longer than the height distance between the top and bottom of the inclined surface of the trapezoidal cut 205b. When the push plate 104c contacts the fixing ring 302b, the first arc-shaped block 204c disengages from between the two second arc-shaped blocks 204f. The end face of the trapezoidal block 205d does not contact the bottom of the inclined surface of the trapezoidal cut 205b. This ensures that when the push plate 104c pushes the fixing ring 302b, the fixing ring 302b directly pushes the lead block 104d, while the trapezoidal block 205d cannot squeeze the extrusion rod 205a, thus better protecting the extrusion rod 205a.

[0097] Furthermore, the limiting part 303 includes a rack 303a and a rotating shaft 303b disposed inside the second through opening 105a, a gear 303c and an elliptical block 303d disposed on the rotating shaft 303b, and a plane 303e disposed on the elliptical block 303d.

[0098] Among them, the rack 303a is installed on the inner wall of the second through-hole 105a.

[0099] The rotating shaft 303b is located at the center inside the second through-hole 105a.

[0100] Among them, gear 303c is fixedly sleeved on the side wall of rotating shaft 303b, and gear 303c meshes with rack 303a.

[0101] Specifically, there are two gears 303c, which are located above and below the elliptical block 303d, respectively.

[0102] Among them, the elliptical block 303d is fixedly sleeved on the side wall of the rotating shaft 303b, and the two ends of the elliptical block 303d are planes 303e.

[0103] Specifically, when the plane 303e is flush with the end face of the extrusion rod 205a, even if the first spring 206b loses its elasticity and cannot support the clamping block 204a, the elliptical block 303d will block the extrusion rod 205a, and the clamping block 204a will not be able to drive the first arc-shaped block 204c to detach from the two second arc-shaped blocks 204f.

[0104] Operating Procedure: When the first arc-shaped block 204c is positioned between the two second arc-shaped blocks 204f, the position of the lead block 104d can be restricted by the clamping block 204a and the fixing rod 204e. This also prevents the cylinder 104a from operating for extended periods, increasing its lifespan. Furthermore, even if the cylinder 104a is damaged, the position of the lead block 104d will not change. When adjusting the position of the lead block 104d inside the housing 102, the operator activates the cylinder 104a. When the cylinder 104a drives the push rod 104b, the push rod 104b moves the push plate 104c. During a portion of the push rod 104b's movement, the push rod 104b cannot directly apply the thrust. Instead of being used on lead block 104d, push rod 104b drives trapezoidal block 205d and rack 303a to move first. Trapezoidal block 205d moves inside trapezoidal cut 205b, driving extrusion rod 205a to move into third through-hole 205c. Extrusion rod 205a drives insertion rod 206a to retract into slot 203. Extrusion rod 205a drives clamping block 204a, which in turn causes first spring 206b to contract. Clamping block 204a causes first arc-shaped block 204c to disengage from two second arc-shaped blocks 204f. Simultaneously with the movement of extrusion rod 205a, rack 303a drives gear 303c to rotate, which in turn drives shaft 303b. The rotating shaft 303b drives the elliptical block 303d to rotate, which in turn drives the plane 303e to rotate. When the push plate 104c causes the second spring 302a to contract and contact the fixing ring 302b, the length direction of the plane 303e is perpendicular to the end face of the extrusion rod 205a. At this time, the lead block 104d is no longer restricted. When the cylinder 104a continues to push the push rod 104b, the push rod 104b drives the push plate 104c, which in turn drives the fixing ring 302b. The fixing ring 302b then drives the lead block 104d to move. The lead block 104d moves on the side wall of the limiting rod 105b and on the roller 106b. When it reaches the designated position... The operator only needs to close cylinder 104a, releasing the gas inside, and allowing cylinder 104a to extend and retract. At this time, the second spring 302a resumes driving the push plate 104c, which in turn drives the push rod 104b to move in the opposite direction. The push rod 104b drives the trapezoidal block 205d to move, returning it to its initial position. The rack 303a drives the gear 303c to reverse, causing the elliptical block 303d to drive the plane 303e to re-press the rod 205a for restriction. The first spring 206b resumes driving the clamping block 204a, which drives the first arc-shaped block 204c to insert between the two second arc-shaped blocks 204f, thus re-locking the lead block 104d.

[0105] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0106] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0107] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0108] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A counterweight mechanism for engineering machinery, characterized in that: include, The counterweight adjustment mechanism (100) includes a body (101), a housing (102) disposed on the body (101), a protective part (103) and an adjustment part (104) disposed on the housing (102), a stabilizing part (105) disposed on the adjustment part (104), and a sliding part (106) disposed on the housing (102). The clamping and fixing mechanism (200) includes a first storage groove (201), a through hole (202) and a slot (203) disposed on the adjustment part (104), a clamping part (204) disposed inside the first storage groove (201), and a squeezing part (205) and a spring-back part (206) disposed on the clamping part (204). The limiting mechanism (300) includes a second storage slot (301) disposed on the adjusting part (104), a reset part (302) disposed inside the second storage slot (301), and a limiting part (303) disposed on the squeezing part (205). The adjustment unit (104) includes a cylinder (104a) disposed inside the housing (102), a push rod (104b) disposed on the cylinder (104a), a push plate (104c) and a lead block (104d) disposed on the push rod (104b), and a first through hole (104e) disposed on the lead block (104d). The stabilizing part (105) includes a second through-hole (105a) disposed on the lead block (104d) and a limiting rod (105b) disposed inside the second through-hole (105a). The clamping part (204) includes a clamping block (204a) disposed inside the first storage slot (201), an arc-shaped groove (204b) disposed on the clamping block (204a), a first arc-shaped block (204c) disposed inside the arc-shaped groove (204b), a first V-shaped cut surface (204d) disposed on the first arc-shaped block (204c), a fixing rod (204e) disposed on the limiting rod (105b), a second arc-shaped block (204f) disposed on the fixing rod (204e), and a second V-shaped cut surface (204g) disposed on the second arc-shaped block (204f). The extrusion section (205) includes an extrusion rod (205a) disposed on the clamping block (204a), a trapezoidal cut (205b) disposed on the extrusion rod (205a), a third through-hole (205c) disposed on the push rod (104b), and a trapezoidal block (205d) disposed inside the third through-hole (205c). The limiting part (303) includes a rack (303a) and a rotating shaft (303b) disposed inside the second through opening (105a), a gear (303c) and an elliptical block (303d) disposed on the rotating shaft (303b), and a plane (303e) disposed on the elliptical block (303d).

2. The counterweight mechanism of the engineering machinery as described in claim 1, characterized in that: The protective part (103) includes a flip plate (103a) and a socket (103b) disposed on the housing (102), a baffle (103c) disposed inside the socket (103b), a handle (103d) disposed on the baffle (103c), and a bolt (103e) disposed on the baffle (103c).

3. The counterweight mechanism of the engineering machinery as described in claim 1 or 2, characterized in that: The sliding part (106) includes a long rod (106a) disposed inside the housing (102) and a roller (106b) disposed on the long rod (106a).

4. The counterweight mechanism of the engineering machinery as described in claim 1, characterized in that: The spring-loaded part (206) includes a insert rod (206a) disposed inside the slot (203) and a first spring (206b) disposed on the clamp (204a).

5. The counterweight mechanism of the engineering machinery as described in claim 1, characterized in that: The reset part (302) includes a second spring (302a) disposed inside the second storage slot (301) and a fixing ring (302b) disposed inside the second storage slot (301).

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