A steel frame structure excavator gearbox disassembly and assembly tool

Abstract

The present invention discloses a steel frame structure excavator gearbox disassembly and assembly tool, comprising a load-bearing platform, a load-bearing steel frame and a lifting mechanism, wherein the lifting mechanism comprises a hydraulic lifting rod and a hydraulic pump, the load-bearing steel frame comprises a pair of cross bars and two side panels respectively connected at both ends of the cross bars, the upper and lower sides of the side panels are bent to the same side to form upper and lower side panels perpendicular to the side panels, respectively, the ends of the cross bars are provided with groove rails with openings facing downwards, the ends of the upper side panels of the side panels are respectively provided with hangers, the cross bars and the side panels are assembled into a square frame-shaped load-bearing steel frame through the matching groove rails and hangers, the load-bearing platform is placed in the load-bearing steel frame, and the four corners of the load-bearing platform are detachably connected to the upper side panels corresponding to the upper side panels through a hydraulic lifting rod. The present invention has a small size, can be disassembled and assembled, is easy to carry, and can quickly disassemble and assemble the gearbox without the cooperation of multiple people when in use, does not require contact with the ground, and can also quickly disassemble and install the gearbox even when the basic wheels are silted or the vehicle body is tilted.

Description

Technical Field

[0001] The invention relates to the technical field of gearbox disassembling and assembling equipment, in particular to a steel frame structured excavator gearbox disassembling and assembling machine. Background Art

[0002] The gearbox is a crucial component of the equipment's transmission system, making its removal and repair a regular part of equipment maintenance. Gearbox specifications are 1 meter in length, 1 meter in width, 55 cm in height, and weigh approximately 200-350 kg. Its large size, heavy weight, complex structure, and symmetrical shape are hallmarks of the gearbox. Furthermore, the gearbox is typically mounted on the underside of the excavator frame, creating challenges such as cramped working space, difficult assembly and disassembly, high safety risks, and low efficiency. Disassembling and installing a gearbox weighing over 300 kg in the confined space beneath the excavator is extremely difficult, and manual labor alone is challenging, resulting in low efficiency and a high risk of injury.

[0003] Excavators primarily operate in the field, requiring extensive field maintenance. Field conditions can be complex, characterized by muddy, uneven terrain, and high levels of gravel. Currently, existing gearbox assembly and disassembly tools are often bulky, difficult to disassemble and assemble, and inconvenient to carry. They require multiple people to operate, which is inconvenient. Furthermore, most tools require contact with the ground, which can lead to wheel siltation and tilting, making them unsuitable for outdoor environments with uneven surfaces. Summary of the Invention

[0004] The purpose of the present invention is to provide a steel frame structured excavator gearbox disassembly and assembly tool to address the deficiencies in the prior art.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] The lifting mechanism comprises a lifting mechanism, a lifting mechanism comprising a lifting mechanism, a lifting mechanism for lifting the lifting platform, a lifting mechanism for lifting the lifting platform, and a lifting mechanism for lifting the lifting platform. The lifting mechanism comprises a hydraulic lifting rod and a hydraulic pump. The lifting steel frame consists of a pair of cross bars and two side plates respectively connected to the two ends of the cross bars, the upper and lower edges of the side plates are bent 90 degrees to the same side to form an upper side bar and a lower side bar respectively, and a groove rail with an opening facing downward is provided at both ends of the cross bar, and the two ends of the upper bar of the side plate are respectively provided with a hanger adapted to the groove rail. The side plates are suspended on the two side ends of the two cross bars through the cooperation of the hanger and the groove rail to be assembled into a square frame-type bearing steel frame, the bearing platform is placed in the bearing steel frame, and the four corners of the bearing platform are detachably connected to the upper bar of the corresponding side plate above by a hydraulic lifting rod. The lower side bars of the two side plates are each provided with a row of rollers supporting the bearing platform, and a hanging rod for mounting the above-mentioned bearing steel frame on the excavator frame is provided on the cross bar, and the hydraulic lifting rod is connected to the hydraulic pump through a hose.

[0007] In a further design scheme of the present invention, the gearbox disassembly and assembly tool is of a combined assembly type. When in use, a pair of cross bars are first installed on both sides of the gearbox frame, and then the cross bars, side panels, load-bearing platforms, hydraulic lifting rods and hydraulic pumps are assembled to smoothly and quickly disassemble or install the gearbox; when not in use, it is in a scattered and unassembled state for easy carrying.

[0008] In a further design scheme of the present invention, the connection method between the hydraulic lifting rod and the side panel and the upper edge strip adopts a single-double-ear connection method. The two ends of the hydraulic lifting rod are single earring structures, and the four corners of the load-bearing platform and the corresponding side panel upper edge strip are respectively provided with double-ear connectors that are compatible with the single earrings; the double-ear connectors on the side panel upper edge strip are fixed by bolts and nuts, and the through holes connecting the double-ear connectors are long strip through holes.

[0009] In a further design solution of the present invention, a gearbox supporting and fixing block that is adapted to the shape of the bottom of the gearbox is provided on the carrying platform.

[0010] In a further design solution of the present invention, two roller sliding grooves corresponding to the rollers are provided on the bottom surface of the load-bearing platform, and the roller sliding grooves are adapted to the size of the rollers.

[0011] In a further design of the present invention, the bearing platform is made of Q235 structural steel with a thickness greater than 10 mm.

[0012] In a further design of the present invention, the rollers 17 on the lower edge strips of the side panels use N204E cylindrical ball bearings, and a row of rollers 17 consists of 10 bearings installed at equal distances.

[0013] In a further design of the present invention, the hydraulic pump adopts a CP-180 hand-cranked hydraulic pump.

[0014] In a further design of the present invention, the lifting mechanism includes an electric push rod and a control device, which respectively replace the hydraulic lifting rod and the hydraulic pump, and the control device is used to control the lifting and lowering operations of the electric push rod.

[0015] The present invention has the following outstanding beneficial effects:

[0016] 1. The steel frame disassembly and assembly equipment is assembled from multiple portable detachable parts, which is convenient for carrying and transporting in the field environment during combat.

[0017] 2. The disassembly and assembly tools can be quickly installed and disassembled through the simple methods of bolts, grooved rails, and pins with single and double ears. The grooved rails and long through-holes allow the side panels and hydraulic lift rods to be flexibly moved, allowing the disassembly and assembly tools to flexibly adjust the position of the load platform according to the different positions of different excavators of the same model.

[0018] 3. The cross bar can make full use of the screw holes after the tool boxes on both sides of the frame are disassembled, and is rigidly connected to the frame through bolts. Under the premise of ensuring the safety and stability of the disassembly and assembly tools, the entire tool is suspended in the air and does not contact the ground, which greatly improves the adaptability of the disassembly and assembly tool of the present invention to maintenance in different ground environments.

[0019] 4. The assembly and disassembly tool of the present invention utilizes a hand-cranked hydraulic pump for hydraulic lifting. Four hydraulic lift rods are positioned at the four corners of the load platform. When installing the gearbox, the extension length of the four hydraulic lift rods can be adjusted to fine-tune the gearbox's position, facilitating alignment of the gearbox's mounting holes with those on the vehicle frame. This greatly facilitates quick installation of the gearbox. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 2. It is a schematic diagram of the structure of the assembled steel frame excavator gearbox disassembly and assembly tool in the embodiment;

[0021] Figure 2 2. It is a schematic diagram of the crossbar structure in the embodiment;

[0022] Figure 3 2. It is a schematic diagram of the side panel structure in the embodiment;

[0023] Figure 4 Schematic diagram of the side panels and crossbars connected via hangers and groove rails in the embodiment;

[0024] Figure 5 This is a schematic diagram of the structure of the hydraulic lifting rod in the embodiment;

[0025] Figure 6 2. This is a schematic structural diagram of a double-ear connector connecting the side panels in an embodiment;

[0026] Figure 7 This is a schematic diagram of the structure of the carrying platform in the embodiment;

[0027] Figure 8 This is a schematic structural diagram of the oil circuit connecting the hydraulic lifting rod and the hydraulic pump in the embodiment;

[0028] Figure 9 Schematic diagram of the structure of a steel frame excavator gearbox disassembly and assembly tool installed on a vehicle frame in an embodiment;

[0029] In the figure, 1- load-bearing platform, 2- cross bar, 3- side plate, 4- hydraulic lifting rod, 5- frame, 6- hanging rod, 7- mounting hole, 8- groove rail, 9- hand hydraulic pump, 10- upper side bar, 11- lower side bar, 12- hanger, 13- double ear connector, 14- fixing block, 15- single earring, 16- gearbox, 17- roller, 18- roller slide, 19- quick connector oil pipe. DETAILED DESCRIPTION

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments. Example

[0031] See attached Figure 1-7 , a steel frame structure excavator gearbox disassembly and assembly tool, the gearbox 16 is installed at the bottom of the excavator frame 5, and a tool box is fixedly installed on both sides of the frame 5 by screw connection, the gearbox disassembly and assembly tool includes a carrying platform 1, a carrying steel frame and a lifting mechanism, the lifting mechanism includes a hydraulic lifting rod 4 and a hydraulic pump, the carrying steel frame consists of a pair of cross bars 2 and two side plates 3 connected to the two ends of the cross bars 2, the upper and lower sides of the side plates 3 are bent 90 degrees to the same side to form an upper side bar 10 and a lower side bar 11 respectively, the two ends of the cross bar 2 are provided with a groove rail 8 with an opening facing downwards, and the two ends of the upper side bar 10 of the side plate 3 are respectively provided with Hangers 12 are provided for the grooved rails 8, which are T-shaped. The side panels 3 are suspended from the ends of the two crossbars 2 through the cooperation of the hangers 12 and the grooved rails 8, forming a square-shaped load-bearing steel frame. The load-bearing platform 1 is placed within the frame. Each of the four corners of the load-bearing platform 1 is removably connected to the upper side bars 10 of the corresponding side panels 3 above via a hydraulic lift rod 4. The lower side bars 11 of each side panel 3 are each equipped with a row of rollers 17 supporting the load-bearing platform. These rollers 17 utilize N204E cylindrical ball bearings, with each row of rollers 17 consisting of ten equally spaced bearings. Hanging rods 6 are provided on the crossbars 2 for mounting the load-bearing steel frame to the excavator frame 5. These hanging rods 6 have mounting holes 7. The hydraulic lift rods 4 are connected to a CP-180 hand-cranked hydraulic pump via a hose. In order to ensure the smooth and safe disassembly and assembly of the gearbox, a gearbox support and fixing block 14 that matches the shape of the bottom of the gearbox 15 is provided on the carrying platform 1.

[0032] The connection method between the hydraulic lifting rod 4 and the side panel 3 and the upper edge strip 10 adopts a single-double-ear connection method. The two ends of the hydraulic lifting rod 4 are single earrings 15 structures, and the four corners of the load-bearing platform 1 and the corresponding side panel 3 upper edge strip 10 are respectively provided with double-ear connectors 13 that are compatible with the single earrings 15; the double-ear connector 13 on the side panel 3 upper edge strip 10 is fixed by a screw nut, and the through hole connecting the double-ear connector 13 is a long strip through hole.

[0033] The bottom surface of the carrying platform 1 is provided with two roller chutes 18 corresponding to the rollers 17, and the roller chutes 18 are adapted to the size of the rollers 17. The carrying platform 1 is provided with a gearbox 16 support and fixing block 14 adapted to the bottom shape of the gearbox 16, so that the gearbox 16 has a good fit with the carrying platform 1, ensuring the stability of the gearbox 16 during assembly and disassembly.

[0034] The gearbox disassembly and assembly tool is a modular assembly type. When in use, a pair of crossbars 2 are first mounted to either side of the gearbox 16 frame 5. The crossbars 2, side panels 3, support platform 1, hydraulic lift rod 4, and hydraulic pump are then assembled, allowing for smooth and rapid disassembly or installation of the gearbox 16. When not in use, the tool is in a disassembled, portable, and disassembled state. Specifically, during installation, the crossbars 2 are fixed to either side of the frame 5 using screws through the mounting holes 7 on the hanger rods 6 of the crossbar 2, rigidly connecting them. The hangers 12 at each end of the side panels 3 are inserted into the grooves 8 of the crossbar 2, allowing the two side panels 3 to be suspended from the ends of the crossbar 2, allowing them to move forward and backward along the grooves 8 on the crossbar 2. The single earrings 15 at each end of the hydraulic lift rod 4 are connected to the double-ear connectors 13 on the side panels 3 and support platform 1, respectively, using pins. The hydraulic lift rod 4 and the hydraulic pump are connected via oil pipes. During operation, the load-bearing platform 1 supports the weight of the gearbox 16, while the hydraulic lift rod 4 allows for the lifting and lowering of the gearbox 16 during assembly and disassembly. The assembly and disassembly tool utilizes a simple method using screws, grooved rails 8, and single and double lug pins, enabling rapid assembly and disassembly. The grooved rails 8 and elongated through-holes allow for flexible movement of the side panels 3 and hydraulic lift rod 4, allowing the assembly and disassembly tool to flexibly adjust the position of the load-bearing platform 1 to accommodate the varying positions of different excavators of the same model.

[0035] Since the load-bearing platform 1 primarily bears the weight of the gearbox 16, its thickness must meet strength and rigidity requirements to ensure safety, and a strength check was performed. The gearbox 16 and load-bearing platform 1 weigh an estimated 300 kg. The load-bearing platform 1 is constructed of Q235 structural steel with a thickness greater than 10 mm. A roller chute 18 is provided on the bottom surface of the load-bearing platform 1, where it contacts the row of rollers 17 on the lower edge strip 11 of the side panel 3. The chute 18 matches the size of the rollers 17. This ensures safer and easier movement of the load-bearing platform 1.

[0036] The cross bar 2 can make full use of the screw holes on both sides of the frame after the toolboxes are disassembled, and is rigidly connected to the frame through screws. Under the premise of ensuring the safety and stability of the disassembly and assembly tools, the entire tool is in a suspended state and does not contact the ground, which greatly improves the adaptability of the disassembly and assembly tool of the present invention in different ground environments.

[0037] In addition to using a hand-cranked hydraulic pump or a mobile hydraulic station with a hydraulic lifting rod 4 as the external power to drive the load-bearing platform 1 to rise and fall, the lifting mechanism can also use an electric lifting mechanism, including an electric push rod and a control device. The electric push rod and the control device replace the hydraulic lifting rod 4 and the hydraulic pump respectively, and the electric push rod is controlled to rise and fall by the control device. In this embodiment, a hydraulic lifting rod 4 and a hydraulic pump are used. In this embodiment, the disassembly and assembly equipment adopts a hand-cranked hydraulic pump, and the lifting and lowering of the load-bearing platform 1 is achieved by hydraulic power. Four electric push rods or hydraulic lifting rods 4 are used, respectively placed at the four corners of the load-bearing platform 1, and the purpose of adjusting the lifting and lowering of the load-bearing platform 1 is achieved by adjusting the extension length of the push rods.

[0038] When the gearbox does not need to be disassembled, the disassembling and assembling tool of the present invention can be disassembled into the cross bar 2, side panels 3, hydraulic lifting rods 4, load-bearing platform 1, connecting and fastening parts, etc., so that the volume of the entire tool is reduced, which is convenient for storage and transportation.

[0039] When using disassembly tools to disassemble the gearbox 16, the specific disassembly steps are as follows:

[0040] 1. First, remove the toolboxes on both sides of the excavator frame 5, and then use screws to rigidly connect the left and right cross bars 2 to the frame 5.

[0041] 2. After the crossbar 2 is installed, push the hanger 12 of the side panel 3 into the groove 8 of the crossbar 2 to complete the installation. Install the other side panel 3 in the same way.

[0042] 3. Remove the nut on the upper part of the double-ear connector 13 connecting the side panels 3, insert the screw on the double-ear connector 13 from bottom to top through the long strip through hole of the side panels 3, and then screw on the nut to complete the installation. There are two double-ear connectors 13 on each of the left and right side panels 3.

[0043] 4. Install the hydraulic lifting rod 4. Connect the single ear portion of the hydraulic lifting rod 4 to the double ear connector 13 through the pin. There are four hydraulic lifting rods 4 in total, and the installation method is the same.

[0044] 5. Install the load-bearing platform 1. Adjust the distance between the left and right side panels 3 so that the roller slots 18 on the bottom of the load-bearing platform 1 align with the row of rollers 17 on the side panels 3. Then, connect the four double-ear connectors 13 of the load-bearing platform 1 to the single earrings 15 of the four hydraulic lift rods 4 using pins.

[0045] 6. Use the quick connector oil pipe 19 to connect the hydraulic lift rod 4 oil port through the reversing valve and the hand hydraulic pump 9 according to the attached Figure 7 The oil circuit diagram completes the installation of the hydraulic lifting system.

[0046] 7. The overall picture is as follows Figure 8 As shown. With the reversing valve positioned on the left, the hand-cranked hydraulic pump 9 supplies oil to raise the carrying platform 1, aligning the four fixing blocks 14 of the carrying platform 1 with the four hydraulic motors of the gearbox 16. The reversing valve is then positioned in the neutral position, and the three fixing screws of the gearbox 16 are removed. The reversing valve is then positioned on the right, and the adjustable throttle valve is used to smoothly lower the gearbox 16 and the carrying platform 1 onto rollers 17.

[0047] 8. Remove the pins at the four double-ear connectors 13 of the carrying platform 1 and use rollers 17 to pull the gearbox 16 out for repair. After repairs are complete, follow the reverse steps above to complete the installation of the gearbox 16 and the removal of the assembly and disassembly equipment. When installing the gearbox 16, to ensure that the mounting screws can be installed smoothly in various environments and conditions, the extension length of the hydraulic lift rods 4 at the four corners of the carrying platform 1 can be adjusted to adjust the position of the gearbox. This allows for quick removal and installation of the gearbox even when the base wheel is sunken or the vehicle body is tilted.

[0048] The above are preferred embodiments of the present invention. Any changes made according to the technical solution of the present invention, as long as the resulting functions and effects do not exceed the scope of the technical solution of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A steel frame structure excavator gearbox disassembly and assembly tool, wherein the gearbox (16) is installed at the bottom of the excavator frame (5), characterized in that: The invention comprises a bearing platform (1), a bearing steel frame and a lifting mechanism, wherein the lifting mechanism comprises a hydraulic lifting rod (4) and a hydraulic pump, the bearing steel frame comprises a pair of cross bars (2) and two side plates (3) respectively connected to the two ends of the cross bars (2), the upper and lower sides of the side plates (3) are bent 90 degrees to the same side to form an upper side bar (10) and a lower side bar (11), respectively, the two ends of the cross bar (2) are provided with a groove rail (8) with an opening facing downwards, the two ends of the upper side bar (10) of the side plate (3) are respectively provided with a hanger (12) adapted to the groove rail (8), and the side plate (3) is connected to the groove rail through the hanger (12). The rails (8) are hung on both side ends of the two cross bars (2) to form a square frame-type bearing steel frame. The bearing platform (1) is placed in the bearing steel frame. The four corners of the bearing platform (1) are detachably connected to the upper edge strips (10) of the corresponding side panels (3) above through a hydraulic lifting rod (4). The lower edge strips (11) of the two side panels (3) are each provided with a row of rollers (17) supporting the bearing platform (1). The cross bar (2) is provided with a hanging rod (6) for mounting the bearing steel frame on the excavator frame (5). The hydraulic lifting rod (4) is connected to the hydraulic pump through a hose.

2. The steel frame structure excavator gearbox disassembly and assembly tool according to claim 1, characterized in that: The gearbox disassembly and assembly tool is of a combined assembly type. When in use, a pair of cross bars (2) are first installed on both sides of the frame (5) of the gearbox (16), and then the cross bars (2), side plates (3), bearing platform (1), hydraulic lifting rod (4) and hydraulic pump are assembled, thereby smoothly and quickly disassembling or installing the gearbox (16); when not in use, the gearbox is in a scattered and unassembled state for easy carrying.

3. The steel frame structure excavator gearbox disassembly and assembly tool according to claim 1, characterized in that: The connection method of the hydraulic lifting rod (4) with the side panel and the upper edge strip adopts a single-double-ear connection method, and the two ends of the hydraulic lifting rod (4) are single-ear ring structures. The four corners of the load-bearing platform (1) and the corresponding side panel upper edge strip (10) are respectively provided with double-ear connectors (13) adapted to the single ear ring (15); the double-ear connectors (13) on the side panel upper edge strip (10) are fixed by bolts and nuts, and the through holes connecting the double-ear connectors (13) are long strip through holes.

4. The steel frame structure excavator gearbox disassembly and assembly tool according to claim 1, characterized in that: The bearing platform (1) is provided with a gearbox supporting and fixing block (14) that matches the shape of the bottom of the gearbox (15).

5. The steel frame structure excavator gearbox disassembly and assembly tool according to claim 1, characterized in that: The bottom surface of the carrying platform (1) is provided with two roller slide grooves (18) corresponding to the roller (17), and the roller slide grooves (18) are adapted to the size of the roller (17).

6. The steel frame structure excavator gearbox disassembly and assembly tool according to claim 1, characterized in that: The bearing platform (1) is made of Q235 structural steel with a thickness greater than 10 mm.

7. The steel frame structure excavator gearbox disassembly and assembly tool according to claim 1, characterized in that: The rollers (17) on the lower edge strips (11) of the side panels (3) use N204E cylindrical ball bearings, and a row of the rollers (17) consists of 10 equally spaced bearings.

8. The steel frame structure excavator gearbox disassembly and assembly tool according to claim 1, characterized in that: The hydraulic pump adopts a CP-180 hand-cranked hydraulic pump.

9. The steel frame structure excavator gearbox disassembly and assembly tool according to any one of claims 1 to 7, characterized in that: The lifting mechanism comprises an electric push rod and a control device, wherein the electric push rod and the control device replace the hydraulic lifting rod (4) and the hydraulic pump respectively, and the electric push rod is controlled to be lifted and lowered by the control device.

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