Lightweight excavator bucket rod strength testing equipment

Abstract

The invention discloses excavator bucket rod strength testing equipment with lightweight design, and relates to the technical field of excavator testing. The device comprises a detection table, the top of the detection table is provided with a vertically-arranged bucket rod to be detected, the two sides of the top of the detection table are fixedly provided with vertically-arranged lifting frames, one side of the fixed end and one side of the telescopic end of each lifting frame are fixedly provided with horizontally-arranged telescopic arms, and the four telescopic arms located on the two sides are symmetrically arranged. The to-be-tested bucket rod can be completely positioned, the to-be-tested bucket rod is kept in a static state without influencing a test result due to shaking when the to-be-tested bucket rod is subjected to a compression resistance test by the mobile strength detection mechanism subsequently, and different from traditional horizontal equipment, the test equipment is vertical light-weight equipment, does not occupy too much space, and is convenient to use. The bucket rod to be tested can be tested in a vertical state by matching with hoisting equipment, the actual working condition of the bucket rod to be tested is simulated, and adjustment can be carried out according to different specifications of bucket rods to be tested.

Description

Technical Field

[0001] This invention relates to the field of excavator testing technology, and more specifically to a lightweight excavator stick strength testing device. Background Technology

[0002] The excavator stick is one of the most important working components of an excavator. It primarily connects the boom and bucket, enabling digging and loading operations. The length and structural design of the stick directly affect the excavator's working range and efficiency. Depending on the specific operational needs, sticks can be categorized into standard sticks and extended sticks. Extended sticks are suitable for scenarios requiring a larger working radius, such as deep pit excavation and river dredging. The stick is typically made of high-strength alloy steel, heat-treated and precision-machined to ensure its durability and fatigue resistance. 10 The boom made of new materials such as W has high hardness, good toughness, and long service life, and its wear resistance and impact resistance are significantly improved.

[0003] Existing new material sticks need to undergo strength testing before leaving the factory; otherwise, insufficient structural strength of the stick will lead to cracks or deformation in the welds, connections, or even the stick itself under high loads. However, current stick strength testing equipment is mostly horizontal, which results in a large footprint. In addition, the stick is tested in a horizontal position, which cannot simulate the working conditions of the stick in a vertical position. Therefore, a lightweight excavator stick strength testing device is proposed. Summary of the Invention

[0004] The purpose of this invention is to address the problems that existing stick strength testing equipment is mostly horizontal, resulting in a large footprint, and that testing with the stick in a horizontal position cannot simulate the working conditions of the stick in an upright position. This invention provides a lightweight excavator stick strength testing equipment.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution: A lightweight excavator stick strength testing device includes a testing platform. A vertically positioned stick to be tested is mounted on the top of the testing platform. Vertically positioned lifting frames are fixedly installed on both sides of the top of the testing platform. Horizontally positioned telescopic arms are fixedly installed on one side of both the fixed and telescopic ends of the lifting frames. Four telescopic arms are symmetrically arranged on both sides. A semi-circular slide rail is fixedly installed on the telescopic end of each telescopic arm. A suspension arm is fixedly installed on the inner wall of each semi-circular slide rail. A retaining half-shell is fixedly installed at one end of each suspension arm. The four retaining half-shells are paired in pairs and each is adapted to the stick to be tested. Semi-circular sliding rods are slidably installed inside the outer ring of each semi-circular slide rail. One of the semi-circular sliding rods has a side... A first gearbox is fixedly installed on the wall, and a circular actuator motor is fixedly installed on the top of the first gearbox. A circular motion gear set is arranged inside the first gearbox. The first gearbox passes through the semicircular slide rod and is connected to the interior of the semicircular slide rail. The output end of the circular actuator motor extends into the interior of the first gearbox and is driven by the circular motion gear set. Circular motion meshing teeth are fixedly installed on the inner wall of the inner ring of the semicircular slide rail. The circular motion gear set meshes with the circular motion meshing teeth. A mobile strength detection mechanism is arranged on one side of the two semicircular slide rods. The mobile strength detection mechanism is used to perform compressive strength tests on multiple points of the bucket rod to be tested.

[0006] Furthermore, the mobile strength testing mechanism includes two circular motion frames fixedly installed on the outer ring sidewalls of two of the semicircular slide rods. A linear holding slide is fixedly installed at one end of each circular motion frame. The two linear holding slides are located on the top and bottom sides of the bucket to be tested, respectively. A single linear slide rail parallel to the bucket to be tested is slidably installed inside the two linear holding slides. A linear travel sleeve is slidably installed on the linear slide rail. A second gearbox is fixedly installed on one side of the linear travel sleeve. A linear actuator motor is fixedly installed on one side of the second gearbox. A linear motion gear set is provided inside the second gearbox. The second gearbox is connected to the interior of the linear travel sleeve. The output end of the linear actuator motor extends into the interior of the second gearbox and is driven by the linear motion gear set. A linear motion meshing tooth is fixedly installed on one side of the linear slide rail. The linear motion gear set meshes with the linear motion meshing tooth. A pressure-measuring telescopic rod is fixedly installed on the side of the linear travel sleeve facing the bucket to be tested.

[0007] Furthermore, a suspension bracket is fixedly installed on one side of the linear travel slide sleeve, and linear positioning telescopic rods perpendicular to the linear slide rail are fixedly installed on both sides of the suspension bracket. The telescopic ends of the linear positioning telescopic rods are all facing the linear slide rail and are fixedly installed with linear fastening plates.

[0008] Furthermore, a circumferential positioning telescopic rod perpendicular to the linear slide rail is fixedly installed on one side of the linear holding slide, and a circumferential fastening plate adapted to the semicircular slide rail is fixedly installed on the telescopic end of the circumferential positioning telescopic rod.

[0009] Furthermore, each of the side walls of the linear holding slide is provided with a plug hole, and a positioning tooth is slidably inserted into the inside of each plug hole. The positioning tooth meshes with the linear motion meshing tooth. Each side of the linear holding slide is screwed with a fastening nut, and the head of the fastening nut contacts the positioning tooth.

[0010] Furthermore, a laser positioning device is fixedly installed on one side of each of the linear holding slides, and a transmission frame is fixedly installed on one side of each of the linear traveling slides. The transmission frame corresponds to the position of the laser positioning device and is located between the two laser positioning devices.

[0011] Furthermore, the linear slide rail includes multiple short track slide rails connected end to end. Both ends of each short track slide rail are fixedly installed with straight track splicing ears for assembling and fixing any two adjacent short track slide rails. The two short track slide rails located at the top and bottom ends are slidably inserted into the interior of the two linear holding slides. The linear motion meshing teeth are uniformly fixedly installed on the side walls of the multiple short track slide rails.

[0012] Furthermore, both ends of the short track slide rail are provided with multiple threaded half-grooves, and each threaded half-groove is provided with an I-shaped half-groove. A reinforcing I-beam steel bar is inserted into any two adjacent and symmetrical I-shaped half-grooves, and the same sealing nut is screwed into any two adjacent and symmetrical threaded half-grooves.

[0013] Furthermore, a lifting platform is fixedly installed on the top of the testing platform, and a docking base is fixedly installed on the lifting end of the lifting platform, the docking base being adapted to the bottom end of the bucket to be tested.

[0014] Furthermore, circular rail splicing ears are fixedly installed on both ends of the semi-circular slide rail.

[0015] The beneficial effects of this invention are as follows: 1. This invention can completely position the bucket to be tested, so that the bucket to be tested remains stationary during the subsequent compression test by the mobile strength testing mechanism, and will not be affected by shaking. Unlike traditional horizontal equipment, this testing equipment is a vertical and lightweight device that does not occupy too much space. It can be used in conjunction with hoisting equipment to test the bucket in an upright state, simulating the actual working conditions of the bucket to be tested, and can be adjusted according to different specifications of buckets to be tested. 2. This invention uses a movable strength testing mechanism to apply pressure to the bucket to be tested by a pressure-testing telescopic rod, thereby testing its compressive strength. Then, a linear actuator drives a linear sliding sleeve to slide on a linear slide rail, changing the vertical height of the pressure-testing telescopic rod so that it can apply pressure to various points above and below the linear slide rail. At the same time, a circular actuator drives a semi-circular sliding rod to rotate in the semi-circular slide rail, thereby driving the pressure-testing telescopic rod to perform circular motion around the bucket to be tested through the linear slide rail, thus realizing multi-position detection of the pressure-testing telescopic rod. 3. This invention uses a laser positioning device to drive the semi-circular slide rod to rotate until the laser positioning devices on the two linear holding slides sense each other, so that the two linear holding slides are aligned and the linear slide rail can be smoothly inserted into the two linear holding slides. At the same time, after the linear slide rail is assembled on the linear holding slide, the positioning laser will pass through the through hole on the transmission frame on one side of the linear travel slide sleeve. If the laser is blocked, it means that the linear slide rail or the linear travel slide sleeve has not been assembled properly and needs to be reassembled. 4. By setting up circular rail splicing ears, this invention allows the combined semi-circular slide rail and telescopic boom to be disassembled during testing. The upper and lower sets of retaining half shells can be replaced, and the height of the two sets of semi-circular slide rails and the length of the linear slide rail can be adjusted. This allows the semi-circular slide rail, semi-circular slide rod, and movable strength testing mechanism to be assembled on the excavator along with the boom under test. This enables the pressure testing telescopic rod to be tested in real time during the use of the boom under test, further reducing the weight of the testing equipment and making the test results closer to actual working conditions. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the mobile strength testing mechanism of the present invention and the bucket pole to be tested; Figure 3 This is a three-dimensional structural diagram of the strength testing mechanism and the semi-circular slide rail of the present invention. Figure 4 This is a three-dimensional structural diagram of the semi-circular slide rail and semi-circular slide rod of the present invention; Figure 5 This is a three-dimensional structural diagram of the semi-circular slide bar and the circumferential actuator motor of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the linear holding carriage of the present invention; Figure 7 This is a three-dimensional structural diagram of the linear travel sliding sleeve and the pressure measuring telescopic rod of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the linear slide rail of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the short track slide rail of the present invention; Reference numerals: 1. Testing platform; 2. Target boom; 3. Lifting platform; 4. Docking base; 5. Lifting frame; 6. Telescopic arm; 7. Semicircular slide rail; 8. Suspension arm; 9. Holding half shell; 10. Semicircular slide rod; 11. First gearbox; 12. Circular actuator motor; 13. Circular motion meshing gear; 14. Circular motion frame; 15. Linear holding slide; 16. Linear slide rail; 1601. Short track slide rail; 1602. Straight rail splicing ear; 1603. Threaded half groove; 1604. I-beam half... 1605. Reinforcing H-beam; 1606. Sealing nut; 17. Linear travel sleeve; 18. Second gearbox; 19. Linear actuator motor; 20. Pressure measuring telescopic rod; 21. Linear motion meshing gear; 22. Suspension frame; 23. Linear positioning telescopic rod; 24. Linear fastening plate; 25. Circumferential positioning telescopic rod; 26. Circumferential fastening plate; 27. Plug hole; 28. Positioning gear; 29. ​​Fastening nut; 30. Laser positioning instrument; 31. Transmission frame; 32. Circular rail splicing ear. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0019] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0020] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention 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 limiting the present invention.

[0021] like Figures 1 to 1 As shown in Figure 0, a lightweight excavator stick strength testing device includes a testing platform 1, such as... Figure 8 , Figure 9 As shown, specifically, the linear slide rail 16 includes multiple short slide rails 1601 connected end to end. Both ends of the short slide rail 1601 are fixedly installed with straight rail splicing ears 1602 for assembling and fixing any two adjacent short slide rails 1601. The two short slide rails 1601 located at the top and bottom ends are slidably inserted into the interior of two linear holding slides 15 respectively. The linear motion meshing teeth 21 are evenly fixedly installed on the side walls of the multiple short slide rails 1601.

[0022] More specifically, before testing, the lightweight excavator stick strength testing equipment first splices two short guide rails 1601 end to end, and then screws bolts onto the two mating straight rail splicing ears 1602 to fix the straight rail splicing ears 1602 in place. By repeating the operation, the corresponding number of short guide rails 1601 are combined into a straight guide rail 16 of the corresponding length, so that the straight guide rail 16 can cooperate with the lifting frame 5 to lift and maintain the replacement of the half shell 9, thus achieving the adaptation to the stick 2 of different specifications.

[0023] like Figure 8 , Figure 9 As shown, specifically, both ends of the short track slide rail 1601 are provided with multiple threaded half-grooves 1603, and each threaded half-groove 1603 is provided with an I-shaped half-groove 1604. A reinforcing I-beam steel bar 1605 is inserted into any two adjacent and symmetrical I-shaped half-grooves 1604, and the same sealing nut 1606 is screwed into any two adjacent and symmetrical threaded half-grooves 1603.

[0024] More specifically, by setting up reinforcing H-beams 1605, when the short track slide rails 1601 are spliced ​​into a complete linear slide rail 16, the H-beam half-grooves 1604 on both sides will be spliced ​​into a complete H-beam groove. At this time, each reinforcing H-beam 1605 is inserted into each H-beam groove in turn to lock the short track slide rails 1601. Then, a sealing nut 1606 is screwed into the spliced ​​complete threaded half-grooves 1603 to seal the reinforcing H-beams 1605 in the H-beam half-grooves 1604. This locks the two ends of the reinforcing H-beams 1605 onto the short track slide rails 1601 on both sides, greatly improving the connection strength of the short track slide rails 1601 and making the short track slide rails 1601 more flush, thus making the surface of the linear slide rail 16 smoother.

[0025] like Figures 1 to 4As shown, specifically, a vertically arranged test pole 2 is provided on the top of the testing platform 1. A lifting platform 3 is fixedly installed on the top of the testing platform 1. A docking base 4 is fixedly installed on the lifting end of the lifting platform 3. The docking base 4 is adapted to the bottom end of the test pole 2. Vertically arranged lifting frames 5 are fixedly installed on both sides of the top of the testing platform 1. Horizontally arranged telescopic arms 6 are fixedly installed on one side of the fixed end and the telescopic end of the lifting frame 5. The four telescopic arms 6 on both sides are symmetrically arranged. Semicircular slide rails 7 are fixedly installed on the telescopic ends of the telescopic arms 6. Suspension arms 8 are fixedly installed on the inner wall of the semicircular slide rails 7. A retaining half shell 9 is fixedly installed on one end of each suspension arm 8. The four retaining half shells 9 are paired in pairs and adapted to the test pole 2.

[0026] In this embodiment, the lifting platform 3 is a common linear lifting mechanism in the prior art, such as a lifting platform 3 driven by power components such as electric push rods, hydraulic rods, cylinders, and linear modules, or a cross scissor lifting mechanism driven by electric, pneumatic, or hydraulic pressure. The docking base 4 and the lifting end of the lifting platform 3 are fixedly assembled by an assembly plate and a bolt group. The lifting frame 5 is a common large lifting mechanism, such as a hydraulic lifting mechanism or an electric lifting mechanism. It is divided into a fixed end fixedly assembled on the top of the testing platform 1 and a lifting end driven by the fixed end. Each of the two test sticks 2 is equipped with a horizontally set telescopic arm 6 on the fixed end and the lifting end, which plays the role of adjusting the height difference of the two sets of semi-circular slide rails 7. The semi-circular slide rails 7 and the suspension arm 8, and the suspension arm 8 and the retaining half shell 9 are all assembled by bolt groups and can be freely disassembled and replaced.

[0027] More specifically, during testing, a small crane or bridge crane or similar slinging equipment first lifts the bucket 2 to be tested to the top of the testing platform 1. At this time, the lifting platform 3 extends from inside the testing platform 1, driving the docking base 4 to move to the bottom of the bucket 2 to be tested, until the docking base 4 covers the bottom of the bucket 2. Then, the slinging equipment lowers the bucket 2 to be tested until the bottom of the bucket 2 is completely inserted into the docking base 4, temporarily positioning the bucket 2. Afterward, the telescopic arms 6 on both sides drive the semi-circular slide rails 7 to approach and engage with the periphery of the bucket 2 to be tested. The two sets of retaining shells 9 are respectively spliced ​​on the top and bottom of the bucket 2 to be tested. At this time, the bucket 2 to be tested is completely positioned. When the mobile strength testing mechanism performs the compressive strength test on the bucket 2 to be tested, the bucket 2 to be tested is kept in a stationary state and will not be affected by shaking. Unlike traditional horizontal equipment, this testing equipment is a vertical and lightweight equipment that does not occupy too much space. It can be used in conjunction with hoisting equipment to test the bucket 2 to be tested in an upright state, simulating the actual working conditions of the bucket 2 to be tested, and can be adjusted according to different specifications of the bucket 2 to be tested.

[0028] like Figure 4 , Figure 5As shown, semicircular slide rods 10 are slidably installed inside the outer ring of the semicircular slide rail 7. A first gearbox 11 is fixedly installed on the side wall of one of the semicircular slide rods 10. A circular actuator motor 12 is fixedly installed on the top of the first gearbox 11. A circular motion gear set is arranged inside the first gearbox 11. The first gearbox 11 passes through the semicircular slide rods 10 and is connected to the interior of the semicircular slide rail 7. The output end of the circular actuator motor 12 extends into the interior of the first gearbox 11 and is driven by the circular motion gear set. Circular motion meshing teeth 13 are fixedly installed on the inner wall of the inner ring of the semicircular slide rail 7. The circular motion gear set meshes with the circular motion meshing teeth 13, such as... Figure 6 , Figure 7 As shown, specifically, a laser positioning device 30 is fixedly installed on one side of the linear holding slide 15, and a transmission frame 31 is fixedly installed on one side of the linear traveling slide 17. The transmission frame 31 corresponds to the position of the laser positioning device 30 and is located between the two laser positioning devices 30.

[0029] In this embodiment, the laser positioning device 30 is essentially a pair of paired laser generators and laser signal receivers, or other laser instruments that can be paired for positioning, and the two are respectively mounted on two linear holding carriages 15.

[0030] More specifically, by setting up a laser positioning device 30, the semicircular slide rods 10 on both sides are spliced ​​into a complete annular slide rail, with the ends of the semicircular slide rods 10 abutting each other. The circumferential actuator motor 12 drives the circumferential motion gear set inside the first gearbox 11, which meshes with the circumferential motion meshing teeth 13, to rotate. Under the meshing action, the circumferential motion gear set drives the semicircular slide rods 10 to start rotating inside the semicircular slide rail 7, thereby changing the relative position of the upper and lower linear holding slides 15 until the laser positioning devices 30 on the two linear holding slides 15 sense each other, so that the positions of the two linear holding slides 15 correspond, ensuring that the linear slide rail 16 can be smoothly inserted into the two linear holding slides 15. At the same time, after the linear slide rail 16 is assembled on the linear holding slide 15, the laser positioning device 30 will continue to perform laser positioning. The positioning laser will pass through the through hole on the transmission frame 31 on one side of the linear travel slide sleeve 17. If the laser is blocked, it means that the linear slide rail 16 or the linear travel slide sleeve 17 has not been assembled properly and needs to be reassembled.

[0031] like Figure 6 As shown, specifically, each side wall of the linear retaining slide 15 is provided with a plug hole 27, and a positioning tooth 28 is slidably inserted into the plug hole 27. The positioning tooth 28 meshes with the linear motion meshing tooth 21. Each side of the linear retaining slide 15 is screwed with a fastening nut 29, and the head of the fastening nut 29 contacts the positioning tooth 28.

[0032] More specifically, by setting the positioning toothed rod 28, the linear travel sleeve 17 is slidably fitted onto the assembled linear slide rail 16. Then, the two ends of the linear slide rail 16 are sequentially inserted into the two linear retaining slides 15. Next, the two positioning toothed rods 28 are inserted into the plug holes 27 respectively, so that the fixed teeth at one end of the positioning toothed rod 28 engage with the linear motion meshing teeth 21 on the linear slide rail 16. Finally, the fastening nut 29 is screwed into the screw hole on the linear retaining slide 15 to lock the positioning toothed rod 28 in the plug hole 27, thus completing the fixed assembly of the linear slide rail 16. Afterwards, when only testing the bucket 2 of the same specification, it is not necessary to repeat the above assembly process.

[0033] One side of each of the two semicircular slide bars 10 is equipped with the same movable strength testing mechanism. This movable strength testing mechanism is used to perform compressive strength tests on multiple points of the bucket rod 2 under test, such as... Figure 3 , Figure 6 , Figure 7 As shown, specifically, the mobile strength testing mechanism includes two circular motion frames 14 fixedly installed on the outer sidewalls of two semicircular slide rods 10. A linear holding slide 15 is fixedly installed at one end of each circular motion frame 14. The two linear holding slides 15 are located at the top and bottom of the test rod 2, respectively. A linear slide rail 16 parallel to the test rod 2 is slidably installed inside the two linear holding slides 15. A linear travel sleeve 17 is slidably installed on the linear slide rail 16. A second gearbox 18 is fixedly installed on one side of the linear travel sleeve 17. A linear actuator motor 19 is fixedly installed on one side of the second gearbox 18. A linear motion gear set is provided inside the second gearbox 18. The second gearbox 18 is connected to the interior of the linear travel sleeve 17. The output end of the linear actuator motor 19 extends into the interior of the second gearbox 18 and is driven by the linear motion gear set. Figure 8 As shown, a linear motion meshing tooth 21 is fixedly installed on one side of the linear slide rail 16, and the linear motion gear set meshes with the linear motion meshing tooth 21. A pressure measuring telescopic rod 20 is fixedly installed on the side of the linear travel slide sleeve 17 facing the bucket 2 to be measured.

[0034] More specifically, by setting up a movable strength testing mechanism, after the linear slide rail 16 is completely fixed, the pressure testing telescopic rod 20 starts to run and applies a certain pressure to the bucket 2 to be tested. According to the extension stroke of the pressure testing telescopic rod 20, the compressive strength of the bucket 2 to be tested is tested. Then, the linear actuator motor 19 drives the linear motion gear set inside the second gearbox 18, which meshes with the linear motion meshing gear 21, to start rotating. Then, through the meshing action, the linear travel sleeve 17 is driven to slide on the linear slide rail 16, changing the vertical height of the pressure testing telescopic rod 20, so that the pressure testing telescopic rod 20 can apply pressure to various parts of the bucket 2 to be tested. At the same time, the circumferential actuator motor 12 can drive the semi-circular slide rod 10 to rotate in the semi-circular slide rail 7, thereby driving the pressure testing telescopic rod 20 to perform circumferential motion around the bucket 2 to be tested through the linear slide rail 16, thus realizing multi-position detection of the bucket 2 to be tested.

[0035] like Figure 7 As shown, specifically, a suspension bracket 22 is fixedly installed on one side of the linear travel slide 17, and linear positioning telescopic rods 23 perpendicular to the linear slide rail 16 are fixedly installed on both sides of the suspension bracket 22. The telescopic ends of the linear positioning telescopic rods 23 are all facing the linear slide rail 16 and are fixedly installed with linear fastening plates 24. A circumferential positioning telescopic rod 25 perpendicular to the linear slide rail 16 is fixedly installed on one side of the linear holding slide 15, and a circumferential fastening plate 26 adapted to the semi-circular slide rail 7 is fixedly installed on the telescopic ends of the circumferential positioning telescopic rods 25.

[0036] More specifically, by setting a linear fastening plate 24 and a circumferential fastening plate 26, after the linear traveling sleeve 17 rises and falls along the linear slide rail 16, the linear positioning telescopic rod 23 can drive the linear fastening plate 24 to press the linear slide rail 16, locking the position of the linear traveling sleeve 17. At the same time, after the circumferential actuator 12 drives the semi-circular slide rod 10 to rotate around the bucket rod 2 to be tested, the circumferential positioning telescopic rod 25 drives the circumferential fastening plate 26 to press against the semi-circular slide rail 7, thereby fixing the position of the semi-circular slide rod 10, realizing real-time positioning, and preventing the pressure measuring telescopic rod 20 from shifting position during testing.

[0037] like Figure 4 As shown, specifically, circular rail splicing ears 32 are fixedly installed on both ends of the side wall of the semi-circular slide rail 7.

[0038] More specifically, by setting the circular rail splicing ear 32, the combined semi-circular slide rail 7 and telescopic arm 6 can be disassembled during testing, and the upper and lower sets of retaining half shells 9 can be replaced. Then, the height of the two sets of semi-circular slide rails 7 and the length of the linear slide rail 16 can be adjusted so that the semi-circular slide rail 7, semi-circular slide rod 10 and mobile strength testing mechanism can be assembled on the excavator along with the bucket arm 2 to be tested. This allows the pressure testing telescopic rod 20 to perform real-time testing during the use of the bucket arm 2 to be tested, further reducing the weight of the testing equipment and making the test results closer to the actual working conditions.

[0039] In summary: Before testing, first splice the two short guide rails 1601 end to end together. Then, screw bolts onto the two mating straight rail splicing ears 1602 to fix the straight rail splicing ears 1602 in place. Repeat this process to merge the corresponding number of short guide rails 1601 into a straight guide rail 16 of the corresponding length. The I-beam grooves 1604 on both sides will be spliced ​​into a complete I-beam groove. At this point, insert each reinforcing I-beam steel bar 1605 into each I-beam groove in sequence to lock the short guide rails 1601. Then, screw the sealing nut 1606 into the spliced ​​complete threaded half groove 1603 to seal the reinforcing I-beam steel bar 1605 in the I-beam half groove 1604, so that the two ends of the reinforcing I-beam steel bar 1605 are respectively locked to the short guide rails 1601 on both sides, making the short guide rails 1601... The connection strength of the guide rail 1601 is greatly improved, and the short guide rails 1601 are more flush, making the surface of the linear guide rail 16 smoother. First, the bucket pole 2 to be tested is lifted to the top of the testing platform 1 by a small crane or bridge crane. At this time, the lifting platform 3 extends from the inside of the testing platform 1, driving the docking base 4 to move to the bottom of the bucket pole 2 to be tested, until the docking base 4 covers the bottom of the bucket pole 2 to be tested. Then, the lifting equipment lowers the bucket pole 2 to be tested until the bottom of the bucket pole 2 to be tested is completely inserted into the inside of the docking base 4, temporarily positioning the bucket pole 2 to be tested. Then, the telescopic arms 6 on both sides drive each semi-circular guide rail 7 to approach and fasten to the periphery of the bucket pole 2 to be tested, so that the two sets of retaining half shells 9 are respectively spliced ​​on the top and bottom of the bucket pole 2 to be tested. At this point, the boom 2 to be tested is fully positioned, and the semicircular slide rods 10 on both sides are spliced ​​together to form a complete annular slide rail. The semicircular slide rods 10 on both sides abut each other end to end. The circular actuator motor 12 drives the circular motion gear set inside the first gearbox 11, which meshes with the circular motion meshing gear 13, to rotate. Under the meshing action, the circular motion gear set drives the semicircular slide rod 10 to start rotating inside the semicircular slide rail 7, thereby changing the relative position of the upper and lower linear holding slides 15 until the laser positioning devices 30 on the two linear holding slides 15 sense each other, so that the positions of the two linear holding slides 15 correspond, ensuring that the linear slide rail 16 can be smoothly inserted into the two linear holding slides 15. At the same time, after the linear slide rail 16 is assembled on the linear holding slide 15, the laser positioning device 30 senses each other, making the positions of the two linear holding slides 15 correspond, ensuring that the linear slide rail 16 can be smoothly inserted into the two linear holding slides 15. The positioning instrument 30 will continue laser positioning. The positioning laser will pass through the through hole on the transmission frame 31 on one side of the linear travel sleeve 17. If the laser is blocked, it means that the linear slide rail 16 or the linear travel sleeve 17 is not properly assembled and needs to be reassembled. Slide the linear travel sleeve 17 onto the assembled linear slide rail 16, and then insert both ends of the linear slide rail 16 into the two linear retaining slides 15 in sequence. Then insert the two positioning toothed rods 28 into the plug holes 27 respectively, so that the fixed teeth at one end of the positioning toothed rod 28 engage with the linear motion meshing teeth 21 on the linear slide rail 16. Finally, screw the fastening nut 29 into the screw hole on the linear retaining slide 15 to lock the positioning toothed rod 28 in the plug hole 27, thus completing the fixed assembly of the linear slide rail 16.Subsequently, when testing only the same specification of the boom 2 to be tested, it is not necessary to repeat the above assembly process; During static testing, the pressure-measuring telescopic rod 20 starts running and applies a certain pressure to the bucket 2 to be tested. Based on the extension stroke of the pressure-measuring telescopic rod 20, the compressive strength of the bucket 2 to be tested is tested. Then, the linear actuator 19 drives the linear motion gear set inside the second gearbox 18, which meshes with the linear motion meshing gear 21, to start rotating. This meshing action drives the linear travel sleeve 17 to slide on the linear slide rail 16, changing the vertical height of the pressure-measuring telescopic rod 20. This allows the pressure-measuring telescopic rod 20 to apply pressure to various points on the bucket 2 to be tested. At the same time, the circumferential actuator 12 drives the semi-circular slide rod 10 to rotate in the semi-circular slide rail 7. This causes the pressure-measuring telescopic rod 20 to perform circumferential motion around the bucket 2 to be tested through the linear slide rail 16, thereby realizing multi-position detection of the bucket 2 to be tested. During dynamic testing, the combined semicircular slide rail 7 and telescopic boom 6 are disassembled, and the upper and lower sets of retaining half shells 9 are replaced. Then, the height of the two sets of semicircular slide rails 7 and the length of the linear slide rail 16 are adjusted so that the semicircular slide rail 7, semicircular slide bar 10 and mobile strength testing mechanism can be assembled on the excavator along with the bucket 2 to be tested. This allows the pressure testing telescopic bar 20 to perform real-time testing during the use of the bucket 2 to be tested, further reducing the weight of the testing equipment and making the test results closer to the actual working conditions.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A lightweight excavator stick strength testing device, characterized in that, The test platform (1) is provided with a vertically arranged test rod (2) on the top of the test platform (1). Vertically arranged lifting frames (5) are fixedly installed on both sides of the top of the test platform (1). Horizontally arranged telescopic arms (6) are fixedly installed on one side of the fixed end and telescopic end of the lifting frames (5). The four telescopic arms (6) on both sides are symmetrically arranged. Semicircular slide rails (7) are fixedly installed on the telescopic ends of the telescopic arms (6). Suspension arms (8) are fixedly installed on the inner wall of the semicircular slide rails (7). A retaining half shell (9) is fixedly installed on one end of each suspension arm (8). The four retaining half shells (9) are paired in pairs and are adapted to the test rod (2). Semicircular slide rods (10) are slidably installed inside the outer ring of the semicircular slide rails (7). A retaining half shell (9) is fixedly installed on the side wall of one of the semicircular slide rods (10). The first gearbox (11) has a circumferential actuator motor (12) fixedly installed on its top. The first gearbox (11) has a circumferential motion gear set inside. The first gearbox (11) passes through the semicircular slide rod (10) and is connected to the interior of the semicircular slide rail (7). The output end of the circumferential actuator motor (12) extends into the interior of the first gearbox (11) and is driven by the circumferential motion gear set. Circumferential motion meshing teeth (13) are fixedly installed on the inner wall of the inner ring of the semicircular slide rail (7). The circumferential motion gear set meshes with the circumferential motion meshing teeth (13). The same movable strength detection mechanism is provided on one side of the two semicircular slide rods (10). The movable strength detection mechanism is used to perform compressive strength tests on multiple parts of the bucket rod (2) to be tested.

2. The lightweight excavator boom strength testing device according to claim 1, characterized in that, The mobile strength testing mechanism includes two circular motion frames (14) fixedly installed on the outer ring sidewalls of two of the semicircular slide rods (10). A linear holding slide (15) is fixedly installed at one end of each of the circular motion frames (14). The two linear holding slides (15) are located at the top and bottom of the test rod (2), respectively. A linear slide rail (16) parallel to the test rod (2) is slidably installed inside each of the two linear holding slides (15). A linear travel sleeve (17) is slidably installed on the linear slide rail (16). A second gearbox (18) is fixedly installed on one side of the linear travel sleeve (17). A linear actuator motor (19) is fixedly installed on one side of the gearbox (18). A linear motion gear set is provided inside the second gearbox (18). The second gearbox (18) is connected to the interior of the linear travel sleeve (17). The output end of the linear actuator motor (19) extends into the interior of the second gearbox (18) and is driven by the linear motion gear set. A linear motion meshing tooth (21) is fixedly installed on one side of the linear slide rail (16). The linear motion gear set meshes with the linear motion meshing tooth (21). A pressure measuring telescopic rod (20) is fixedly installed on the side of the linear travel sleeve (17) facing the bucket (2) to be measured.

3. The lightweight excavator boom strength testing device according to claim 2, characterized in that, A suspension bracket (22) is fixedly installed on one side of the linear travel slide sleeve (17). A linear positioning telescopic rod (23) perpendicular to the linear slide rail (16) is fixedly installed on both sides of the suspension bracket (22). The telescopic ends of the linear positioning telescopic rod (23) are all facing the linear slide rail (16) and are fixedly installed with linear fastening plates (24).

4. The lightweight excavator boom strength testing device according to claim 2, characterized in that, One side of each of the linear retaining slides (15) is fixedly installed with a circumferential positioning telescopic rod (25) perpendicular to the linear slide rail (16), and the telescopic ends of the circumferential positioning telescopic rod (25) are fixedly installed with circumferential fastening plates (26) that are compatible with the semicircular slide rail (7).

5. The lightweight excavator boom strength testing device according to claim 2, characterized in that, The linear retaining slide (15) has plug holes (27) on its side walls. A positioning tooth (28) is slidably inserted into the plug hole (27). The positioning tooth (28) meshes with the linear motion meshing tooth (21). A fastening nut (29) is screwed onto one side of the linear retaining slide (15). The head of the fastening nut (29) contacts the positioning tooth (28).

6. The lightweight excavator boom strength testing device according to claim 2, characterized in that, A laser positioning device (30) is fixedly installed on one side of each of the linear holding slides (15), and a transmission frame (31) is fixedly installed on one side of each of the linear traveling slides (17). The transmission frame (31) corresponds to the position of the laser positioning device (30) and is located between the two laser positioning devices (30).

7. The lightweight excavator boom strength testing device according to claim 5, characterized in that, The linear slide rail (16) includes multiple short track slide rails (1601) connected end to end. Both ends of the short track slide rail (1601) are fixedly installed with straight track splicing ears (1602) for assembling and fixing any two adjacent short track slide rails (1601). The two short track slide rails (1601) located at the top and bottom are respectively slidably inserted into the interior of the two linear holding slides (15). The linear motion meshing teeth (21) are evenly fixedly installed on the side walls of the multiple short track slide rails (1601).

8. The lightweight excavator boom strength testing device according to claim 7, characterized in that, Both ends of the short track slide rail (1601) are provided with multiple threaded half-grooves (1603), and each of the threaded half-grooves (1603) is provided with an I-shaped half-groove (1604). A reinforcing I-shaped steel bar (1605) is inserted into any two adjacent and symmetrical I-shaped half-grooves (1604), and the same sealing nut (1606) is screwed into any two adjacent and symmetrical threaded half-grooves (1603).

9. The lightweight excavator boom strength testing device according to claim 1, characterized in that, A lifting platform (3) is fixedly installed on the top of the testing platform (1), and a docking base (4) is fixedly installed on the lifting end of the lifting platform (3). The docking base (4) is adapted to the bottom end of the bucket (2) to be tested.

10. The lightweight excavator boom strength testing device according to claim 1, characterized in that, The semicircular slide rail (7) has circular rail splicing ears (32) fixedly installed on both sides of its two ends.

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