Bionic rib plate structure of stress concentration area of excavator stick

Abstract

The utility model discloses a kind of bionic rib plate structures of excavator bucket lever stress concentration zone, it is related to excavator technical field.The utility model includes bionic rib plate main part, the surface of bionic rib plate main part is movably connected with fixed assembly, bionic rib plate main part, for adhering excavator bucket lever stress concentration zone and enhancing structural strength, bionic rib plate main part surface is equipped with positioning cooperation structure.The utility model is cooperatively designed by positioning member and clamping piece, the quick positioning of rib plate and bucket lever can be realized without additional auxiliary equipment, first fixed ring and second fixed ring are completed preliminary butt joint by latch, bolt locking reinforcement, driving member provides power for clamping piece, drives its up and down displacement clamping rib plate, whole operation process is simplified, reduces manual intervention step, substantially improves installation positioning efficiency, reduces labor intensity of staff, effectively solve the defect that traditional positioning mode is complicated and time-consuming, fully adapt to the convenience requirement of field operation.

Description

Technical Field

[0001] This utility model belongs to the field of excavator technology, and in particular relates to a biomimetic stiffening plate structure for the stress concentration zone of an excavator stick. Background Technology

[0002] As the core load-bearing component in excavation operations, the excavator boom must withstand complex loads generated by excavation resistance, material weight, and operational vibrations. Stress concentrations easily occur at its hinges and welds, and without effective reinforcement, fatigue cracking can easily occur, severely impacting equipment lifespan and operational safety. Currently, the industry commonly uses welded stiffeners or bolted fixing to reinforce stress concentration areas of the boom. Biomimetic stiffeners, due to their ability to mimic the stress dispersion characteristics of biological structures, are gradually gaining widespread application. However, existing biomimetic stiffener fixing structures still have many shortcomings that urgently need to be addressed.

[0003] When installing stiffening plates, workers typically use clamps to position the plates and the boom before welding. This positioning method is not only inefficient but also requires an additional fixed platform, resulting in low welding efficiency and affecting welding quality.

[0004] To address this issue, we provide a biomimetic stiffening plate structure for the stress concentration zone of an excavator boom to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a biomimetic stiffening plate structure for the stress concentration area of ​​an excavator stick. By cooperating with the biomimetic stiffening plate body and the fixing components, the problem of low welding efficiency and poor welding quality caused by the need for external clamps for positioning in the welding of stiffening plates in the prior art is solved.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model is a biomimetic stiffener structure for the stress concentration zone of an excavator stick, including a biomimetic stiffener body, and a fixing component is movably connected to the surface of the biomimetic stiffener body. The biomimetic stiffener plate body is used to fit the stress concentration area of ​​the excavator stick and enhance the structural strength. The surface of the biomimetic stiffener plate body is provided with a positioning and fitting structure. The fixing component is detachably assembled to the bionic stiffener body and is used to quickly position and clamp the bionic stiffener body to the bucket pole. The fixing components include a positioning component, a clamping component, and a driving component. The positioning component is used to define the relative position of the bionic stiffener body and the stick. The clamping component is used to clamp the bionic stiffener body longitudinally. The driving component is connected to the clamping component for driving the clamping component to move. The positioning component is a detachable structure that can be adapted to different specifications of bionic rib plate bodies, and the clamping component has a protective structure on the contact surface with the bionic rib plate body.

[0008] The present invention is further configured such that the positioning component includes a first fixing ring and a second fixing ring, the front end of the first fixing ring and the second fixing ring being provided with a pin on opposite sides, and the rear end being threadedly connected with a bolt, thereby forming a closed fixing structure by positioning with the pin and locking with the bolt.

[0009] The present invention is further provided that pin holes are provided on both sides of the bionic stiffener body, and the pin holes are adapted to the pins to limit the lateral displacement of the bionic stiffener body.

[0010] The present invention is further configured such that the clamping component includes a support rod, a lead screw, a screw tube, and a clamping plate. The support rod is fixed to the top of the positioning component, the lead screw is rotatably assembled to the support rod, the screw tube is threadedly engaged with the lead screw, and the clamping plate is fixed to the top of the screw tube and faces the biomimetic rib plate body.

[0011] The present invention is further configured such that a receiving groove is provided at the top of the support rod, and the lead screw is assembled at the bottom of the receiving groove through a bearing. Both the receiving groove and the cross-section of the screw tube are rectangular, which is used to restrict the rotation of the screw tube.

[0012] The present invention is further configured such that a rubber pad is bonded to the side of the clamp plate that contacts the bionic rib plate body, in order to enhance the fit and seal and protect the surface of the bionic rib plate body.

[0013] The present invention is further configured such that the driving component includes a driven bevel gear, a driving bevel gear, a transmission shaft and a handwheel. The driven bevel gear is fixed to the bottom of the lead screw and meshes with the driving bevel gear. The driving bevel gear is connected to the handwheel through the transmission shaft.

[0014] The present invention is further configured such that a mounting hole is provided on the surface of the support rod, and the transmission shaft is fixed to the inner cavity of the mounting hole by a bearing to ensure transmission stability.

[0015] The present invention is further configured such that threaded holes are provided at the rear ends of the first and second fixing rings on opposite sides, and the threaded holes are adapted to bolts for locking the first and second fixing rings.

[0016] The present invention has the following beneficial effects.

[0017] 1. This utility model achieves rapid positioning of the stiffening plate and the stick without additional auxiliary equipment through the coordinated design of the positioning component and the clamping component. The first and second fixing rings are initially connected by a pin and reinforced by bolts. The driving component provides power to the clamping component, which moves up and down to clamp the stiffening plate. The entire operation process is simplified, reducing manual intervention steps, greatly improving installation and positioning efficiency, reducing the labor intensity of workers, effectively solving the defects of traditional positioning methods that are cumbersome and time-consuming, and fully adapting to the convenience requirements of on-site operations.

[0018] 2. The precise fit between the pin and the pin hole in this utility model prevents lateral displacement of the bionic stiffener body. The threaded connection between the screw and the helical tube in the clamping component provides stable clamping force. The clamping plate and the stiffener fit tightly to prevent longitudinal displacement. The rubber pad further enhances the fit and protects the surface of the stiffener. The stable positioning state ensures that the relative position of the stiffener and the boom remains unchanged during the welding process, significantly improving the weld quality, reducing the risk of fatigue cracking in the stress concentration area of ​​the boom, and extending the service life of the equipment. At the same time, the detachable design of the positioning component can be adapted to stiffeners of different specifications, making it highly versatile. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a three-dimensional diagram of a biomimetic stiffening plate structure for the stress concentration zone of an excavator boom.

[0021] Figure 2 This is a side view schematic diagram of a biomimetic stiffening plate structure for the stress concentration zone of an excavator boom.

[0022] Figure 3 This is a cross-sectional schematic diagram of a biomimetic stiffening plate structure for the stress concentration zone of an excavator boom.

[0023] Figure 4 This is an exploded schematic diagram of a biomimetic stiffening plate structure in the stress concentration zone of an excavator boom.

[0024] Figure 5 This is an exploded schematic diagram of the fixing component in a biomimetic stiffening plate structure for stress concentration areas of an excavator boom.

[0025] Figure 6 In a biomimetic stiffening plate structure for the stress concentration zone of an excavator boom Figure 3 Enlarged diagram of point A.

[0026] In the attached diagram: 1. Bionic rib plate main body; 11. Pin hole; 2. Fixing component; 21. Positioning component; 211. First fixing ring; 212. Second fixing ring; 213. Pin; 214. Bolt; 22. Clamping component; 221. Support rod; 222. Receiving groove; 223. Lead screw; 224. Screw; 225. Clamping plate; 23. Driving component; 231. Driven bevel gear; 232. Driven bevel gear; 233. Transmission shaft; 234. Handwheel. Detailed Implementation

[0027] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Please see Figures 1-6 This utility model is a biomimetic stiffener structure for the stress concentration area of ​​an excavator stick. The core consists of a biomimetic stiffener body 1 and a fixing component 2. Through a split positioning and mechanical transmission clamping design, the biomimetic stiffener and stick are quickly and accurately positioned without the need for additional auxiliary clamps, thus improving welding efficiency and quality and adapting to the stress strengthening requirements of various stick specifications.

[0029] This structure adopts a modular design, and the selection of each component takes into account both strength and ease of operation: The main body of the biomimetic stiffener plate 1 is made of high-strength alloy steel, and its surface simulates the stress dispersion structure of biological skeletons, which fits the curved contour of the stress concentration area of ​​the bucket pole to ensure uniform force transmission. In the fixing assembly 2, structural components such as the first fixing ring 211, the second fixing ring 212, and the support rod 221 are made of carbon steel and are treated with anti-rust to enhance durability; The lead screw 223 and the solenoid 224 adopt a high-strength threaded connection to ensure stable clamping force; The rubber pads are made of wear-resistant and elastic material, and the bevel gear set is hardened to improve transmission efficiency and service life.

[0030] The bionic stiffener body 1 is an L-shaped plate structure with an arc that matches the curved surface of the stress concentration area of ​​the excavator stick. Pin holes 11 are symmetrically opened on both sides. The pin holes 11 are precisely matched with the pins 213 of the positioning component 21 to limit the lateral displacement of the bionic stiffener body 1, ensure that there is no misalignment with the contact surface of the stick, and provide a stable reference for welding.

[0031] Positioning component 21 is a split structure, consisting of a first fixing ring 211 and a second fixing ring 212, which together form a ring structure that fits the boom. A pin 213 is fixed to the front end of the first fixing ring 211 and the second fixing ring 212 on the opposite side. The pin 213 can be directly inserted into the pin hole 11 of the bionic rib plate body 1 to achieve preliminary positioning. The rear ends of the first fixing ring 211 and the second fixing ring 212 are both provided with threaded holes, which are locked by bolts 214 so that the first fixing ring 211 and the second fixing ring 212 fit tightly against the surface of the bucket rod to form a stable positioning base. The modular design allows for adjustment based on the boom diameter and bionic rib specifications, offering high versatility and eliminating the need for separate positioning tools for different models.

[0032] Clamping member 22 is vertically assembled on top of positioning member 21 for longitudinally clamping the biomimetic rib plate body 1. The support rod 221 is vertically fixed to the top rear end of the first fixing ring 211 and the second fixing ring 212. The receiving groove 222 at the top is a rectangular structure, which restricts the screw tube 224 from rotating with the lead screw 223 and ensures that the screw tube 224 only moves axially. The lead screw 223 is mounted at the bottom of the receiving groove 222 via a bearing, and its top end is threadedly connected to the screw tube 224. Rotating the lead screw 223 can drive the screw tube 224 to move the clamping plate 225 up and down. The clamping plate 225 is an L-shaped plate that fits against the surface of the bionic rib plate body 1. The rubber pad bonded to its bottom can increase friction and prevent damage to the coating on the surface of the rib plate during clamping.

[0033] Drive component 23 is a bevel gear transmission structure used to convert lateral rotational force into longitudinal driving force. Driven bevel gear 231 is fixed to the bottom of lead screw 223 and meshes with horizontally set drive bevel gear 232 to achieve a 90° change in transmission direction; The drive bevel gear 232 extends to the outside of the support rod 221 via the drive shaft 233, and the handwheel 234 at the end provides a gripping fulcrum for the operator. Rotating the handwheel 234 will drive the lead screw 223 to rotate. The drive shaft 233 is fixed in the mounting hole of the support rod 221 by bearings, which reduces friction during transmission and ensures smooth and labor-saving operation.

[0034] The working principle of this utility model is as follows: S1: Fit the bionic stiffener plate body 1 to the stress concentration area of ​​the excavator stick, and adjust its position so that the stiffener plate is completely fitted to the curved surface of the stick; S2: Disassemble the positioning component 21, fasten the first fixing ring 211 and the second fixing ring 212 to both sides of the stick respectively, so that the pin 213 is inserted into the pin hole 11 of the bionic stiffener body 1 to complete the initial positioning; S3: Tighten the bolts 214 at the rear end of the two fixing rings to lock the positioning piece 21 to the stick. At this time, the bionic stiffener body 1 is restricted from lateral displacement. S4: Rotate the handwheel 234, which drives the driving bevel gear 232 to rotate via the transmission shaft 233, and the meshing driven bevel gear 231 drives the lead screw 223 to rotate; S5: When the lead screw 223 rotates, the screw tube 224 moves upward along the receiving groove 222, driving the clamping plate 225 to press the bionic rib plate body 1 until the rib plate and the bucket rod fit together without gap, thus completing the longitudinal clamping. S6: Keep the fixing component 2 in a clamped state and weld the contact point between the bionic stiffener body 1 and the stick; after welding, reverse the operation to loosen the fixing component 2, and it can be removed for reuse.

[0035] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific implementation methods described. The present specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present utility model, so that those skilled in the art can better understand and utilize the present utility model.

Claims

1. A biomimetic stiffening plate structure for the stress concentration zone of an excavator stick, comprising a biomimetic stiffening plate body (1), characterized in that: The surface of the bionic stiffener body (1) is movably connected to a fixing component (2); The bionic stiffener body (1) is used to fit the stress concentration area of ​​the excavator stick and enhance the structural strength. The surface of the bionic stiffener body (1) is provided with a positioning and fitting structure. The fixing component (2) is detachably assembled to the bionic stiffener body (1) and is used to quickly position and clamp the bionic stiffener body (1) to the bucket rod; The fixing component (2) includes a positioning component (21), a clamping component (22), and a driving component (23). The positioning component (21) is used to define the relative position of the bionic stiffener body (1) and the stick. The clamping component (22) is used to clamp the bionic stiffener body (1) longitudinally. The driving component (23) is connected to the clamping component (22) for driving the clamping component (22) to move. The positioning component (21) is a split structure that can be adapted to different specifications of bionic rib plate body (1), and the clamping component (22) has a protective structure on the contact surface with the bionic rib plate body (1).

2. The biomimetic stiffening plate structure for the stress concentration zone of an excavator boom according to claim 1, characterized in that: The positioning component (21) includes a first fixing ring (211) and a second fixing ring (212). The first fixing ring (211) and the second fixing ring (212) are provided with a pin (213) at the front end on opposite sides, and a bolt (214) is threadedly connected to the rear end. A closed and fixed structure is formed by positioning with the pin (213) and locking with the bolt (214).

3. The biomimetic stiffening plate structure for the stress concentration zone of an excavator boom according to claim 2, characterized in that: The bionic rib plate body (1) has pin holes (11) on both sides. The pin holes (11) are adapted to the pins (213) to limit the lateral displacement of the bionic rib plate body (1).

4. The biomimetic stiffening plate structure for the stress concentration zone of an excavator boom according to claim 1, characterized in that: The clamping member (22) includes a support rod (221), a lead screw (223), a screw tube (224), and a clamping plate (225). The support rod (221) is fixed to the top of the positioning member (21). The lead screw (223) is rotatably mounted on the support rod (221). The screw tube (224) is threadedly engaged with the lead screw (223). The clamping plate (225) is fixed to the top of the screw tube (224) and faces the bionic rib plate body (1).

5. The biomimetic stiffening plate structure for the stress concentration zone of an excavator boom according to claim 4, characterized in that: The support rod (221) has a receiving groove (222) at the top, and the lead screw (223) is assembled at the bottom of the receiving groove (222) by bearing. The receiving groove (222) and the screw tube (224) have rectangular cross sections, which are used to restrict the rotation of the screw tube (224).

6. The biomimetic stiffening plate structure for the stress concentration zone of an excavator boom according to claim 4, characterized in that: The side of the clamp (225) that contacts the bionic rib plate body (1) is bonded with a rubber pad to enhance the fit and seal and protect the surface of the bionic rib plate body (1).

7. The biomimetic stiffening plate structure for the stress concentration zone of an excavator boom according to claim 1, characterized in that: The drive unit (23) includes a driven bevel gear (231), a driving bevel gear (232), a transmission shaft (233), and a handwheel (234). The driven bevel gear (231) is fixed to the bottom of the lead screw (223) and meshes with the driving bevel gear (232). The driving bevel gear (232) is connected to the handwheel (234) through the transmission shaft (233).

8. The biomimetic stiffening plate structure for the stress concentration zone of an excavator boom according to claim 4, characterized in that: The support rod (221) has mounting holes on its surface.

9. The biomimetic stiffening plate structure for the stress concentration zone of an excavator boom according to claim 2, characterized in that: The first fixing ring (211) and the second fixing ring (212) each have a threaded hole at their rear ends on opposite sides. The threaded hole is adapted to the bolt (214) and is used to lock the first fixing ring (211) and the second fixing ring (212).

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