Grab bucket machine for engineering machinery with anti-falling structure

Abstract

The utility model discloses a grab bucket machine with anti -drop structure for engineering machinery relates to engineering machinery technical field. The utility model discloses a grab bucket, still include: prevent falling department, prevent falling department to set up on grab bucket, buffer portion, buffer portion sets up at the top of grab bucket, prevent falling department includes anti -drop subassembly, and anti -drop subassembly installs at both sides of grab bucket, and drive subassembly, drive subassembly installs on anti -drop subassembly, prevent falling department includes the hinge block of a plurality of fixed connections at the top of grab bucket, and a plurality of hinge block has the hinge link of rotation connection. The utility model discloses through setting up prevent falling department, has solved that grab bucket machine adopts top hydraulic hinge structure control bottom open and shut, when grab bucket full load material, because the weight concentrates in the bottom, overall gravity moves down, leads to bottom to bear huge vertical pressure, when pressure exceeds design limit, bottom is easy to open unexpectedly, causes material to spill, the problem of influence operation efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery technology, and in particular relates to a grab bucket for engineering machinery with an anti-fall-off structure. Background Technology

[0002] A grab excavator with an anti-fall-off structure refers to a device that adds features such as mechanical locking devices, dual braking systems, or sensor-linked anti-loosening mechanisms to the traditional grab excavator. Its core function is to ensure that the grab will not fall off during operation due to unexpected factors such as hydraulic system failure, wire rope breakage, operational errors, or external impacts, through physical locking, redundant braking, or intelligent monitoring. The anti-fall-off structure on the grab excavator primarily avoids economic losses such as material spillage and equipment damage caused by the grab falling off. More importantly, it effectively prevents safety accidents such as personal injury or death caused by the grab falling off, thereby ensuring the safety of the working environment, improving the reliability of equipment operation, and reducing potential operational risks.

[0003] However, existing grab buckets use a top hydraulic hinge structure to control the opening and closing of the bottom. When the grab bucket is fully loaded with material, the weight is concentrated at the bottom, and the overall center of gravity shifts downward, causing the bottom to bear huge vertical pressure. When the pressure exceeds the design limit, the bottom is prone to open accidentally, causing material to spill and affecting the operating efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a grab bucket for engineering machinery with an anti-fall structure. By setting the anti-fall part, the problem of grab buckets using a top hydraulic hinge structure to control the opening and closing of the bottom is solved. When the grab bucket is fully loaded with material, the weight is concentrated at the bottom, the overall center of gravity shifts downward, and the bottom bears huge vertical pressure. When the pressure exceeds the design limit, the bottom is prone to accidentally opening, causing material to spill and affecting the work efficiency.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a grab bucket for engineering machinery with an anti-fall structure, comprising a grab bucket and further comprising: an anti-fall section disposed on the grab bucket; a buffer section disposed on the top of the grab bucket; the anti-fall section includes anti-fall components mounted on both sides of the grab bucket; and a drive component mounted on the anti-fall components; the anti-fall component includes a plurality of hinge blocks fixedly connected to the top of the grab bucket, and hinge rods rotatably connected to the plurality of hinge blocks, the outer wall of the hinge rods being fitted with rectangular rods, the outer wall of the hinge rods being rotatable. The device is connected to several reinforcing rods, with the ends of these reinforcing rods away from the hinge rods hinged to the grab bucket. The grab bucket consists of two symmetrical half-frames. This design incorporates an anti-drop section and a buffer section on the grab bucket. The anti-drop component of the anti-drop section utilizes a linkage structure composed of a hinge block, a hinge rod, a rectangular rod, and reinforcing rods. Under the action of the drive component, it can effectively prevent the object grabbed by the grab bucket from falling. The reinforcing rods enhance the stability of the grab bucket. At the same time, the symmetrical half-frame design of the grab bucket, combined with the anti-drop structure, can adapt to the grabbing of objects of various shapes, improving the safety and reliability of the grabbing process.

[0007] Furthermore, the buffer section includes a connecting assembly mounted on the support rod; and a buffer assembly mounted on the connecting assembly; wherein the buffer assembly is located within the connecting assembly, and the buffer section is connected to the support rod through the connecting assembly. By embedding the buffer assembly within the connecting assembly, this structural design can achieve a stable connection between the grab and the support rod, and effectively absorb the impact force generated during the operation of the grab with the help of the buffer assembly, reduce vibration transmission, protect the grab and related equipment, extend service life, and improve the stability and safety of the grab operation.

[0008] Furthermore, the drive assembly includes several U-shaped frames fixedly connected to the inner wall of the grab bucket. Each U-shaped frame has a connecting rod hinged to its inner wall. A support rod is rotatably connected to one end of each connecting rod away from the U-shaped frame, and a drive component is mounted on the support rod. Four U-shaped frames and four connecting rods are provided, with each connecting rod hinged within one of the four U-shaped frames. The drive assembly forms a hinged transmission structure through the U-shaped frames, connecting rods, and support rods on the inner wall of the grab bucket. The symmetrical arrangement of the four U-shaped frames and connecting rods allows for uniform transmission of driving force. When the drive component acts on the support rod, the connecting rod drives the hinged rod and rectangular rod of the anti-drop component to move in tandem, achieving synchronous opening and closing of the anti-drop structure. This ensures accurate triggering and stable operation of the anti-drop function during grabbing, improving the reliability of equipment control and grabbing safety.

[0009] Furthermore, the connecting assembly includes a trapezoidal rod sleeved on the outer wall of the support rod. Two sliding rods are slidably connected to the trapezoidal rod. A fixing plate one is fixedly connected to the bottom end of the two sliding rods, and a fixing plate two is fixedly connected to the top end of the two sliding rods. A connector is provided on the top of the fixing plate two. The two sliding rods are symmetrically distributed on both sides of the connector. The connecting assembly, through the trapezoidal rod sleeved on the support rod, combined with the two symmetrically distributed sliding rods and fixing plates one and two, forms a stable structure that can slide along the support rod. The sliding rods can guide the trapezoidal rod to move up and down. Fixing plates one and two can respectively connect the buffer assembly and the grab bucket. The symmetrical layout ensures uniform force distribution. The connector facilitates connection with external equipment. The overall structure not only ensures the flexible connection between the grab bucket and the support rod, but also provides an installation foundation for the buffer assembly, improving the stability and buffering effect of the equipment connection.

[0010] Furthermore, the buffer assembly includes a damper fixedly connected to the top of the fixed plate, the top of the damper being fixedly connected to the trapezoidal rod, and a spring wound around the outer wall of the damper; wherein, one end of the spring is fixedly connected to the fixed plate, and the other end of the spring is fixedly connected to the trapezoidal rod. Through the damper on the fixed plate and the wound spring, when the trapezoidal rod is subjected to force, the damper can absorb the impact energy, and the spring can buffer the vibration through elastic deformation. The synergistic effect of the two can effectively reduce the impact force and vibration when the grab bucket is working, protect the grab bucket and the support rod connection structure, improve the stability and durability of the equipment operation, and ensure the safe and reliable operation of the grab bucket.

[0011] Furthermore, the driving component includes a rotating block one rotatably connected to the outer wall of the support rod. A hydraulic push rod is fixedly connected to the bottom of the rotating block one, and a rotating block two is fixedly connected to the output end of the hydraulic push rod. The bottom of the rotating block two is rotatably connected to the rectangular rod. The hydraulic push rod is located in the middle of the support rod and the rectangular rod. The driving component forms a transmission structure through the rotating block one, the hydraulic push rod, and the rotating block two on the support rod. The hydraulic push rod is located in the middle of the support rod and the rectangular rod. It can drive the rotating block two to rotate through its extension and retraction action, thereby pushing the rectangular rod to link with the anti-drop component. By utilizing the stability and precision of hydraulic transmission, flexible control of the anti-drop structure can be achieved. The anti-drop force can be adjusted according to the gripping requirements to ensure the stability of the object gripped by the grab bucket and improve the reliability and safety of the automated operation of the equipment.

[0012] Furthermore, the connector includes a second fixing plate fixedly connected to the top of the two slide rods. A wire binding frame is fixedly connected to the top of the second fixing plate. The connector fixes the wire binding frame through the second fixing plate at the top of the slide rod. The wire binding frame can be used to connect and fix the grab bucket to external cables or equipment. The structural support of the second fixing plate and the slide rods ensures that the wire binding frame is installed stably, while not affecting the up and down buffering action of the buffer assembly, so that the grab bucket can be connected during hoisting or transmission.

[0013] This utility model has the following beneficial effects:

[0014] 1. By setting up an anti-drop mechanism, after the material is grabbed, the hydraulic push rod is retracted in the reverse direction. The hinge rod is pulled upward, causing the grab bucket to close upward. The U-shaped frame and the connecting rod work together to close the two side walls of the grab bucket and lock the material. At the same time, the bottom end of the reinforcing tie rod hinged to both sides of the hinge rod is rotatably connected to the bottom of the grab bucket. When the grab bucket moves upward and closes, it generates an oblique pulling force, forming a lateral locking force at the bottom. This counteracts the vertical pressure generated by the downward shift of the center of gravity of the fully loaded material, ensuring that the bottom of the grab bucket closes firmly under heavy load, reducing the risk of material spillage and improving work efficiency.

[0015] 2. By setting up a buffer section, during hoisting operations, the grab bucket is started when the hoisting line is connected to the binding frame. During the lifting and lowering of heavy objects, the tension of the hoisting line fluctuates violently due to start-stop and inertia. The buffer mechanism, consisting of a fixed plate, sliding rod, damper, and spring, then comes into play. The binding frame drives the relevant components to make the sliding rod slide within the trapezoidal rod, compressing the damper and spring. The spring absorbs energy through elastic deformation, and the damper dissipates energy through friction of the damping medium. The two work together to suppress the peak tension of the hoisting line, preventing it from impacting the hoisting line and grab bucket structure, thereby extending the service life of the equipment and improving the stability and safety of hoisting.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial cross-sectional view of the anti-falling part of the present invention.

[0020] Figure 3 This is a partial cross-sectional view of the buffer section of this utility model;

[0021] Figure 4 This utility model Figure 2 A magnified structural diagram of A in the middle;

[0022] Figure 5 This utility model Figure 3 A magnified structural diagram of B in the diagram.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Grab bucket; 2. Anti-fall section; 21. Anti-fall assembly; 211. Hinge block; 212. Hinge rod; 213. Rectangular rod; 214. Reinforcing tie rod; 22. Drive assembly; 221. U-shaped frame; 222. Connecting rod; 223. Support rod; 224. Rotating block one; 225. Hydraulic push rod; 226. Rotating block two; 3. Buffer section; 31. Connecting assembly; 311. Trapezoidal rod; 312. Slide rod; 313. Fixing plate one; 314. Fixing plate two; 315. Binding frame; 32. Buffer assembly; 321. Damper; 322. Spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 As shown, this utility model is a grab bucket machine for engineering machinery with an anti-fall structure, including a grab bucket 1, and also including: an anti-fall part 2, which is disposed on the grab bucket 1; and a buffer part 3, which is disposed on the top of the grab bucket 1.

[0027] The anti-fall component 2 includes an anti-fall assembly 21, which is installed on both sides of the grab bucket 1; and a drive assembly 22, which is installed on the anti-fall assembly 21. The anti-fall assembly 21 includes several hinge blocks 211 fixedly connected to the top of the grab bucket 1. Hinges 212 are rotatably connected to the hinge blocks 211. Rectangular rods 213 are sleeved on the outer wall of the hinge rods 212. Several reinforcing tie rods 214 are rotatably connected to the outer wall of the hinge rods 212. The ends of the reinforcing tie rods 214 away from the hinge rods 212 are all hinged to the grab bucket 1. The grab bucket 1 is composed of two mutually symmetrical half-frames. The drive assembly 22 includes several U-shaped frames 221 fixedly connected to the inner wall of the grab bucket 1. Each U-shaped frame 221 has a connecting rod 222 hinged to its inner wall. One end of each connecting rod 222 away from the U-shaped frame 221 is rotatably connected to a support rod 223. A drive component is provided on the support rod 223. There are four U-shaped frames 221 and four connecting rods 222, and each of the four connecting rods 222 is hinged within one of the four U-shaped frames 221. The drive component includes a rotating block rotatably connected to the outer wall of the support rod 223. 224, a hydraulic push rod 225 is fixedly connected to the bottom of rotating block 224, and a rotating block 226 is fixedly connected to the output end of the hydraulic push rod 225. The bottom of rotating block 226 is rotatably connected to the rectangular rod 213. The hydraulic push rod 225 is located in the middle of the support rod 223 and the rectangular rod 213. By setting the anti-drop part 2, after the material is grabbed, the hydraulic push rod 225 is retracted in the reverse direction, and the hinge rod 212 moves upward under the action of tension, which synchronously drives the grab bucket 1 to close upward. During this process, the U-shaped frame 221 and the connecting rod 222 work together. The combined action causes the two side walls of the grab bucket 1 to gradually close, locking the material inside the bucket. It is worth mentioning that the reinforcing tie rods 214, which are hinged to both sides of the hinge rod 212, play a key role. Because their bottom ends are rotatably connected to the bottom of the grab bucket 1, when the hinge rod 212 moves the grab bucket 1 upward to close, the reinforcing tie rods 214 generate an oblique pulling force, which will form a lateral locking force at the bottom of the grab bucket. This effectively counteracts the vertical pressure caused by the downward shift of the center of gravity when the grab bucket is fully loaded with material, ensuring that the bottom of the grab bucket remains firmly closed under heavy load conditions, greatly reducing the risk of material spillage and significantly improving operating efficiency.

[0028] The buffer section 3 includes a connecting assembly 31, which is mounted on the support rod 223; and a buffer assembly 32, which is mounted on the connecting assembly 31. The buffer assembly 32 is located inside the connecting assembly 31. The connecting assembly 31 includes a trapezoidal rod 311 sleeved on the outer wall of the support rod 223. Two sliding rods 312 are slidably connected to the trapezoidal rod 311. A first fixing plate 313 is fixedly connected to the bottom end of the two sliding rods 312, and a second fixing plate 314 is fixedly connected to the top end of the two sliding rods 312. A connector is provided at the top of component 4; two sliding rods 312 are symmetrically distributed on both sides of the connector. The buffer assembly 32 includes a damper 321 fixedly connected to the top of the first fixed plate 313. The top of the damper 321 is fixedly connected to the trapezoidal rod 311, and a spring 322 is wound around the outer wall of the damper 321. One end of the spring 322 is fixedly connected to the first fixed plate 313, and the other end of the spring 322 is fixedly connected to the trapezoidal rod 311. The connector includes a second fixed plate 314 fixedly connected to the top of the two sliding rods 312. The top of the fixed plate 314 is fixedly connected to the wire binding frame 315. By setting the buffer part 3, during actual hoisting operations, after the hoisting line is securely connected to the wire binding frame 315, the grab bucket can be started. During the process of the grab bucket lifting or lowering heavy objects, the tension of the hoisting line will fluctuate violently due to factors such as start-stop, inertia, or sudden load changes. At this time, the buffer mechanism composed of the fixed plate 313, the fixed plate 314, two sliding rods 312, the damper 321, and the spring 322 starts to operate. The wire binding frame 315 drives the fixed plate 314 and the fixed plate 315 to move together. The slide bar 312 and slide rod 313 allow the two slide rods 312 to slide within the trapezoidal rod 311, thereby compressing the internal damper 321 and spring 322. The spring 322 absorbs the energy generated by the tension change through elastic deformation, while the damper 321 utilizes the frictional energy dissipation of the internal damping medium to convert mechanical energy into heat energy for dissipation. The two work together to effectively suppress the peak tension of the hoisting line, preventing it from directly acting on the hoisting line and grab bucket structure. This not only extends the service life of the hoisting line and equipment but also significantly improves the stability and safety during hoisting.

[0029] One specific application of this embodiment is as follows: During operation, the operator activates the hydraulic push rod 225, and the output thrust is transmitted to the rectangular rod 213 through the first rotating block 224 and the second rotating block 226, driving the hinge rod 212 on the inner side of the rectangular rod 213 to move downward. Since the hinge rod 212 is hinged to the grab bucket 1, as the hydraulic push rod 225 continues to apply force, the grab bucket 1 unfolds from the middle to both sides to the open state under the action of the linkage mechanism composed of multiple U-shaped frames 221 and connecting rods 222, thereby covering the material and completing the grabbing action. After the material is grabbed, the hydraulic pressure is reversed. As push rod 225 retracts, hinge rod 212 moves upward under tension, simultaneously driving grab bucket 1 to close upward. During this process, U-shaped frame 221 and connecting rod 222 work together to gradually close the two side walls of grab bucket 1, locking the material inside. It is worth noting that the reinforcing tie rods 214, hinged to both sides of hinge rod 212, play a crucial role. Because their bottom ends are rotatably connected to the bottom of grab bucket 1, when hinge rod 212 drives grab bucket 1 to move upward and close, reinforcing tie rods 214 generate an oblique pulling force, forming a lateral locking force at the bottom of the grab bucket, effectively counteracting the effects of material loading. The vertical pressure generated by the downward shift of the center of gravity ensures that the bottom of the grab bucket remains firmly closed under heavy load conditions, significantly reducing the risk of material spillage and greatly improving operational efficiency. During actual lifting operations, the grab bucket can be started after the lifting line is securely connected to the binding frame 315. During the lifting or lowering of heavy objects, the tension of the lifting line may fluctuate violently due to factors such as start-stop, inertia, or sudden load changes. At this time, the buffer mechanism, composed of fixed plate 313, fixed plate 314, two sliding rods 312, damper 321, and spring 322, begins to operate, and the binding frame 315 drives... The fixing plate 314, fixing plate 313, and sliding rod 312 allow the two sliding rods 312 to slide within the trapezoidal rod 311, thereby compressing the internal damper 321 and spring 322. The spring 322 absorbs the energy generated by the tension change through elastic deformation, while the damper 321 utilizes the frictional energy dissipation of the internal damping medium to convert mechanical energy into heat energy for dissipation. The two work together to effectively suppress the peak tension of the hoisting line, preventing it from directly acting on the hoisting line and grab bucket structure. This not only extends the service life of the hoisting line and equipment but also significantly improves the stability and safety during hoisting.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A grab bucket for engineering machinery with an anti-fall-off structure, comprising a grab bucket (1), characterized in that, Also includes: Anti-fall part (2), the anti-fall part (2) is provided on the grab bucket (1); A buffer section (3) is provided on top of the grab bucket (1); The anti-fall part (2) includes an anti-fall component (21), which is installed on both sides of the grab bucket (1); as well as A drive component (22) is mounted on an anti-drop component (21); The anti-fall component (21) includes several hinge blocks (211) fixedly connected to the top of the grab bucket (1). A hinge rod (212) is rotatably connected to the several hinge blocks (211). A rectangular rod (213) is sleeved on the outer wall of the hinge rod (212). Several reinforcing tie rods (214) are rotatably connected to the outer wall of the hinge rod (212). The ends of the several reinforcing tie rods (214) away from the hinge rods (212) are all hinged to the grab bucket (1). The grab bucket (1) consists of two symmetrical half-frames.

2. The grab bucket for engineering machinery with an anti-fall-off structure according to claim 1, characterized in that, The buffer section (3) includes a connecting assembly (31) mounted on a support rod (223); and A buffer assembly (32) is mounted on a connecting assembly (31); The buffer component (32) is located within the connecting component (31).

3. A grab bucket for engineering machinery with an anti-fall-off structure according to claim 2, characterized in that, The drive assembly (22) includes a plurality of U-shaped frames (221) fixedly connected to the inner wall of the grab bucket (1). The inner walls of the plurality of U-shaped frames (221) are all hinged with connecting rods (222). The end of the plurality of connecting rods (222) away from the U-shaped frames (221) is rotatably connected to a support rod (223). A drive component is provided on the support rod (223). There are four U-shaped frames (221) and four connecting rods (222), and the four connecting rods (222) are all hinged in the four U-shaped frames (221).

4. A grab bucket for engineering machinery with an anti-fall-off structure according to claim 3, characterized in that, The connecting assembly (31) includes a trapezoidal rod (311) sleeved on the outer wall of the support rod (223), two slide rods (312) are slidably connected on the trapezoidal rod (311), a fixing plate (313) is fixedly connected to the bottom end of the two slide rods (312), and a connector is provided on the two slide rods (312). Two slide rods (312) are symmetrically distributed on both sides of the connector.

5. A grab bucket for engineering machinery with an anti-fall-off structure according to claim 4, characterized in that, The buffer assembly (32) includes a damper (321) fixedly connected to the top of a fixed plate (313), the top of the damper (321) being fixedly connected to a trapezoidal rod (311), and a spring (322) being wound around the outer wall of the damper (321). One end of the spring (322) is fixedly connected to the fixing plate (313), and the other end of the spring (322) is fixedly connected to the trapezoidal rod (311).

6. A grab bucket for engineering machinery with an anti-fall structure according to claim 5, characterized in that, The driving component includes a rotating block one (224) rotatably connected to the outer wall of the support rod (223), a hydraulic push rod (225) fixedly connected to the bottom of the rotating block one (224), a rotating block two (226) fixedly connected to the output end of the hydraulic push rod (225), and the bottom of the rotating block two (226) rotatably connected to the rectangular rod (213). The hydraulic push rod (225) is located in the middle of the support rod (223) and the rectangular rod (213).

7. A grab bucket for engineering machinery with an anti-fall-off structure according to claim 6, characterized in that, The connector includes a top fixing plate two (314) fixedly connected to the top of the two slide bars (312), and a binding frame (315) is fixedly connected to the top of the fixing plate two (314).

Images