CN111941352A - A portable assembled excavator gearbox disassembly and assembly tool - Google Patents

Abstract

The invention discloses a portable assembly type excavator gearbox dismounting machine tool, which comprises a bearing platform, a bearing steel frame and a lifting mechanism, wherein the lifting mechanism comprises a hydraulic lifting rod, slide rail and hydraulic pump, bear the steelframe by a pair of horizontal pole with connect respectively two blocks of curb plates at the horizontal pole both ends and constitute, the last border that the upper and lower both sides of curb plate formed to one side bending, the groove rail that is equipped with the opening down at horizontal pole both ends, both ends on the curb plate are equipped with the pendant respectively, horizontal pole and curb plate assemble into the square frame type through the groove rail and the pendant of looks adaptation and bear the steelframe, load-bearing platform arranges in and bears the steelframe, the inboard upper portion level of every curb plate is fixed and is set up a slide rail, two slide rails are parallel and relative setting in bearing the steelframe, hydraulic lifting rod hangs on the slide rail through rolling pulley on the slide rail, load-bearing platform. The invention has small volume, detachable combination and convenient carrying, can rapidly detach and install the gearbox without cooperation of a plurality of persons when in use, does not need to contact with the ground, and can rapidly detach and install the gearbox under the conditions of silting of the basic wheels and inclination of the vehicle body.

Description

A portable assembled excavator gearbox disassembly and assembly tool

technical field

The invention relates to the technical field of excavator gearbox disassembly and assembly equipment, in particular to a portable assembled excavator gearbox disassembly and assembly tool.

Background technique

The gearbox is an important part of the equipment transmission system, so disassembling and repairing the gearbox is a regular work for equipment maintenance. The relevant parameters of the gearbox are 1m long, 1m wide, 55cm high, and weighs about 200-350kg. It has the characteristics of large size, heavy weight, complex structure, and symmetrical shape. At the same time, the gearbox is generally installed on the bottom of the excavator frame. These The characteristics also bring problems such as narrow working space, difficult disassembly and assembly, high safety risk and low operation efficiency for maintenance work. It is extremely difficult to disassemble and install the gearbox weighing more than 300 kilograms in the narrow space at the bottom of the excavator. It is difficult to disassemble and assemble the gearbox of the excavator by manpower alone, and there are problems such as low work efficiency and high risk factor.

Excavators are mainly operated in the field, and there is a need for a large number of field maintenance. The ground environment of the field environment is very complex, such as muddy ground, uneven ground, and many gravels. At present, the existing gearbox disassembly and assembly tools are often large in size, cannot be disassembled and assembled, and are not easy to carry. It is inconvenient to require multiple people to cooperate in use, and most of the tools need to be in contact with the ground. The problem of body tilt is not suitable for outdoor uneven ground environment.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a portable assembled excavator gearbox disassembly and assembly tool in view of the above deficiencies in the prior art.

The purpose of this invention is to realize through the following technical solutions:

A portable assembled excavator gearbox disassembly and assembly tool, the gearbox is installed on the bottom of the excavator frame, and includes a bearing platform, a bearing steel frame and a lifting mechanism, and the bearing steel frame is connected by a pair of cross bars and The two side plates at both ends of the cross bar are composed of two side plates. The upper edge of the side plate is bent 90° to one side to form an upper edge strip. The two ends of the cross bar are provided with groove rails with downward openings. The two ends of the upper part are respectively provided with hangers that are adapted to the groove rails, and the side plates are suspended from the two side ends of the two cross bars through the cooperation of the hangers and the groove rails, and are assembled into a box-shaped bearing steel frame. The bearing platform is placed in the bearing steel frame; the lifting mechanism includes a hydraulic lifting rod, a sliding rail and a hydraulic pump, a sliding rail is fixed horizontally at the upper part of the inner side of each side plate, and the two sliding rails are parallel in the bearing steel frame The length of the sliding rail is longer than the width of the side plate, the sliding rail is provided with a long slot, and each sliding rail is installed with two hydraulic lifting rods, and the upper end of the hydraulic lifting rod passes through the length of the sliding rail. A pulley is fixedly connected to the slot, and the hydraulic lifting rod is suspended on the sliding rail through a pulley that rolls on the sliding rail; the four corners of the bearing platform are respectively connected with the bottom ends of the four hydraulic lifting rods, and the horizontal rod is provided with The above-mentioned bearing steel frame is installed on the hanging rod on the frame of the excavator, and the hydraulic lifting rod is connected with the hydraulic pump through a hose.

In a further design scheme of the present invention, the above-mentioned gearbox disassembly and assembly tool is a combined assembly type. When in use, a pair of crossbars are first installed on both sides of the frame of the gearbox, and then the crossbars, side plates, sliding Rails, load-bearing platforms, hydraulic lifting rods and hydraulic pumps are assembled, so that the gearbox can be disassembled or installed smoothly and quickly; it is a scattered and unassembled state that is easy to carry when not in use.

In a further design scheme of the present invention, the connection method between the hydraulic lifting rod and the bearing platform adopts a single and double ear connection mode, the bottom end of the hydraulic lifting rod is a single earring structure, and the four corners of the bearing platform are respectively provided with the single earring. Adapted binaural connectors.

In a further design scheme of the present invention, the above-mentioned bearing platform is provided with a gearbox supporting and fixing block which is adapted to the shape of the bottom of the gearbox.

In a further design scheme of the present invention, the lower edge of the side plate is bent 90° to the same side as the upper edge strip to form a lower edge strip, and each of the lower edge strips of the two side plates is provided with a row of rollers supporting the bearing platform , the bottom surface of the bearing platform is provided with two roller chute corresponding to the roller, and the roller chute is adapted to the size of the roller.

In a further design scheme of the present invention, the above-mentioned bearing platform adopts Q235 structural steel with a thickness greater than 10 mm.

In a further design scheme of the present invention, the rollers on the lower side strips of the side plates adopt N204E cylindrical ball bearings, and the row of rollers is 10 bearings installed at equal distances.

In a further design scheme of the present invention, the above-mentioned hydraulic pump adopts the CP-180 type hand hydraulic pump.

In a further design scheme of the present invention, the above-mentioned sliding rail is provided with a retaining bar.

In a further design solution of the present invention, the lifting mechanism includes an electric push rod and a control device, the electric push rod and the control device replace the hydraulic lift rod and the hydraulic pump respectively, and the electric push rod is operated by the control device. Lift control operation.

The present invention has the following outstanding beneficial effects:

1. The steel frame type disassembly machine is assembled by a plurality of portable detachable parts, which is convenient to carry and transport with the vehicle in the field environment during combat.

2. The disassembly machine can be quickly installed and disassembled by bolts, groove rails, and single and double ears of the pin shaft. The position of the side plate and the hydraulic lifting rod can be moved flexibly through the grooved rail and the elongated through hole, so that the disassembly and assembly tool can flexibly adjust the position of the carrying platform according to the different positions of different excavators of the same model.

3. The crossbar can make full use of the disassembled screw holes of the toolbox on both sides of the frame, and rigidly connect it with the frame through bolts. Under the premise of ensuring the safety and stability of the disassembly and assembly equipment, the whole machine is in a suspended state and does not contact the ground. , greatly improving the adaptability of the dismantling machine of the present invention for maintenance in different ground environments.

4. The dismantling machine of the present invention adopts a hand-operated hydraulic pump to realize lifting and lowering through hydraulic power. Four hydraulic lifting rods are used, which are respectively placed at the four corners of the bearing platform. When installing the gearbox, the position of the gearbox can be fine-tuned by adjusting the extension length of the four hydraulic lifting rods to facilitate the installation holes on the gearbox. It is docked with the position of the mounting hole on the frame, which greatly facilitates the quick installation of the gearbox.

5. The dismantling tool of the present invention moves the gearbox outwards by means of sliding rails, and the gearbox can be moved out without disassembling the bearing platform and the hydraulic lifting rod, and the disassembly and installation speed is faster.

Description of drawings

1 is a schematic structural diagram of a portable assembled excavator gearbox disassembly and assembly tool after being assembled in the embodiment;

Fig. 2 is the structural representation of the cross bar in the embodiment;

3 is a schematic view of the side plate structure in the embodiment;

4 is a schematic diagram of the connection between the side plate and the cross bar through the pendant and the groove rail in the embodiment;

5 is a schematic structural diagram of a hydraulic lift rod in an embodiment;

6 is a schematic view of the structure of the slide rail in the embodiment;

7 is a schematic structural diagram of a carrying platform in an embodiment;

Fig. 8 is a schematic structural diagram of the oil circuit connecting the hydraulic lift rod and the hydraulic pump in the embodiment;

9 is a schematic structural diagram of a portable assembled excavator gearbox disassembly and assembly tool installed on a vehicle frame in an embodiment;

In the figure, 1-carrying platform, 2-crossbar, 3-side plate, 4-hydraulic lifting rod, 5-frame, 6-hanging rod, 7-installation hole, 8-groove rail, 9-hand hydraulic pump , 10-upper edge, 11-lower edge, 12-pendant, 13-double ear connector, 14-fixed block, 15-single earring, 16-gearbox, 17-roller, 18-roller chute, 19-slide Rail, 20-long slot, 21-pulley, 22-quick connector tubing, 23-stop.

Detailed ways

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

Example

Referring to Figures 1-9, a portable assembled 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 through screw connections, and the gearbox is disassembled. The installation tool includes a bearing platform 1, a bearing steel frame and a lifting mechanism. The bearing steel frame is composed of a pair of cross bars 2 and two side plates 3 connected at both ends of the cross bars 2 respectively. The upper edge of the side plates 3 is bent 90 to the same side. ° The upper edge strip 10 and the lower edge strip 11 are formed, the two ends of the cross bar 2 are provided with groove rails 8 with openings facing downward, and the two ends of the upper edge strip 10 of the side plate 3 are respectively provided with hanging pieces 12 adapted to the groove rails 8. The plate 3 is suspended on both sides of the two cross bars 2 through the cooperation of the pendant 12 and the groove rail 8, and is assembled into a square bearing steel frame, and the bearing platform 1 is placed in the bearing steel frame; the lifting mechanism includes a hydraulic lifting rod 4, a sliding For the rail 19 and the hydraulic pump, a slide rail 19 is fixed horizontally on the upper part of the inner side of each side plate, and a stop bar 23 is arranged on the slide rail 19. The two slide rails 19 are parallel and opposite in the bearing steel frame, and the length of the slide rail 19 Longer than the width of the side plate, a long slot 20 is provided on the slide rail 19, and two hydraulic lift rods 4 are installed on each slide rail 19. The upper end of the hydraulic lift rod passes through the long slot 20 of the slide rail 19 and is fixedly connected with a pulley. 21. The hydraulic lifting rod is suspended on the sliding rail 19 through a pulley 21 that rolls on the sliding rail 19; The hanging rod 6 installed on the excavator frame 5 is provided with a mounting hole 7, and the hydraulic lifting rod 4 is connected with a hydraulic pump through a hose, and the hydraulic pump adopts a CP-180 hand hydraulic pump. In order to make the gearbox stable and safe during the disassembly and assembly process, the bearing platform 1 is provided with a gearbox supporting and fixing block 14 which is adapted to the bottom shape of the gearbox 15 .

The connection method of the hydraulic lifting rod 4 and the bearing platform 1 adopts the single and double ear connection method. The bottom end of the hydraulic lifting rod 4 is a single earring structure. .

The gearbox disassembly and assembly tool is a combined assembly type. When in use, first install a pair of cross bars 2 on both sides of the frame 5 of the gearbox 16, and then install the cross bars 2, side plates 3, slide rails 19, and carrying platform 1. , The hydraulic lifting rod 4 is assembled with the hydraulic pump, and then the gearbox 16 is smoothly and quickly disassembled or installed; when not in use, it is a scattered and unassembled state that is easy to carry. Specifically, when installing, first remove the tool boxes on both sides of the frame, so that the bearing steel frame can be installed on the frame through the screws or screw holes of the installation tool box. Hole 7, the above-mentioned cross bar 2 is fixedly installed on both sides of the frame 5 with screws, so that the cross bar 2 and the frame 5 are rigidly connected; The two side plates 3 are respectively suspended on both ends of the cross bar 2 , and the side plates 3 can move forward and backward on the cross bar 2 along the groove rail 8 . Connect the upper end of the hydraulic lift rod 4 through the long slot 20 of the slide rail 19 to the pulley 21, install and hang the hydraulic lift rod 4 on the slide rail 19, and fix the slide rail 19 to the side plate 3; The single earrings 15 at the bottom end of the hydraulic lifting rod 4 are respectively connected with the double ear connecting pieces 13 at the four corners of the carrying platform 1, and the hydraulic lifting rod 4 and the hydraulic pump are connected by oil pipes. When working, the bearing platform 1 is used to bear the gravity of the gearbox 16 , and then the hydraulic lifting rod 4 is used to realize the lifting and lowering of the gearbox 16 during the disassembly and assembly process. The disassembly machine can be quickly installed and disassembled through the screw rod, the groove rail 8, and the single and double ears of the pin shaft. The position of the side plate 3 and the hydraulic lifting rod 4 can be flexibly moved through the grooved rail 8 and the elongated through hole, so that the disassembly and assembly tool can flexibly adjust the position of the carrying platform 1 according to the different positions of different excavators of the same model. .

Since the bearing platform 1 is mainly used to carry the weight of the gearbox 16 , in order to ensure safety, the thickness of the bearing platform 1 must meet the requirements of strength and rigidity, and the thickness is checked for strength. The weight of the gearbox 16 and the carrying platform 1 is estimated to be 300kg. The bearing platform 1 is made of Q235 structural steel with a thickness greater than 10mm. The bottom surface of the carrying platform 1 is in contact with a row of rollers 17 on the lower edge 11 of the side plate 3 , and a roller chute 18 is provided, and the roller chute 18 is adapted to the size of the roller 17 . This allows for a safer and easier movement of the carrier platform 1 .

The cross bar 2 can make full use of the disassembled screw holes of the toolbox on both sides of the frame, and rigidly connect it with the frame through the screw rod. On the premise of ensuring the safety and stability of the disassembly and assembly equipment, the whole machine is in a suspended state and does not contact the ground. The adaptability of the dismantling machine of the present invention under different ground environments is greatly improved.

In addition to using a hand hydraulic pump or a mobile hydraulic station with a hydraulic lifting rod 4, the external power to drive the carrying platform 1 to lift can also be an electric lifting mechanism, including an electric push rod and a control device, an electric push rod and The control device replaces the hydraulic lifting rod 4 and the hydraulic pump respectively, and the electric push rod is controlled by the control device for lifting and lowering. In this embodiment, a hydraulic lift rod 4 and a hydraulic pump are used. In this embodiment, the disassembly and assembly machine adopts a hand-operated hydraulic pump, and the lifting and lowering of the carrying platform 1 is realized by hydraulic power. Four electric push rods or hydraulic lifting rods 4 are used, which are respectively placed at the four corners of the bearing platform 1, and the purpose of adjusting the lifting and lowering of the bearing platform 1 is achieved by adjusting the extension length of the push rods.

When the disassembly and assembly tool of the present invention does not need to disassemble and assemble the gearbox, it can be decomposed into a cross bar 2, a side plate 3, a slide rail 19, a pulley 21, a hydraulic lifting rod 4, a bearing platform 1, a connection and fastening part, etc., In this way, the volume of the whole set of equipment is reduced, which is convenient for storage and transportation.

When using the disassembly and assembly tool to disassemble the gearbox 16, the specific disassembly and assembly steps are as follows:

1. First, remove the tool boxes on both sides of the excavator frame 5, and then connect the left and right cross bars 2 to the frame 5 with screws to form a rigid connection.

2. After the installation of the cross bar 2 is completed, push the pendant 12 of the side plate 3 into the groove rail 8 of the cross bar 2 to complete the installation. Install the other side panel 3 in the same way.

3. Connect the upper end of the hydraulic lifting rod 4 through the long slot 20 of the slide rail 19 to the pulley 21, install and hang the hydraulic lifting rod 4 on the sliding rail 19, and install two hydraulic lifting rods 4 on each slide rail 19. .

4. The slide rail 19 is fixedly connected to the side plate 3 through the screw nut;

5. Install the bearing platform 1. The distance between the left and right side plates 3 is adjusted so that the roller chute 18 on the bottom surface of the carrying platform 1 fits with a row of rollers 17 on the side plate 3 . Then, the four double ear connectors 13 of the carrying platform 1 are connected to the single ear rings 15 of the four hydraulic lifting rods 4 respectively through pins.

6. Use the quick connector oil pipe 22 to connect the oil port of the hydraulic lift rod 4 through the reversing valve and the hand hydraulic pump 9 to complete the installation of the hydraulic lift system according to the oil circuit diagram in Figure 7.

7. The overall diagram is shown in Figure 8. The reversing valve is placed on the left side, and oil is supplied by the hand-operated hydraulic pump 9 , so that the carrying platform 1 is raised, and the four fixing blocks 14 of the carrying platform 1 are respectively fitted with the four hydraulic motors of the gearbox 16 . Then put the reversing valve in the neutral position, and disassemble the three fixed screws of the gearbox 16. Place the reversing valve on the right side, and use the adjustable flow valve to make the gearbox 16 and the carrying platform 1 smoothly descend to a suitable position.

8. Pull the carrying platform 1 outward, the pulley 21 slides outward along the slide rail 19, and move the carrying platform 1 carrying the gearbox 16 out of the bottom of the frame, so that the gearbox 16 can be pulled out for maintenance. After the maintenance is completed, the installation of the gearbox 16 and the disassembly of the disassembly and assembly tool are completed according to the reverse steps of the above process. When installing the gearbox 16, in order to ensure that the fixed screw of the gearbox 16 can be installed smoothly in various environments and conditions, the extension length of the hydraulic lifting rods 4 at the four corners of the bearing platform 1 can be adjusted respectively, so as to adjust the position of the gearbox, thereby The gearbox can be quickly disassembled and installed even when the base wheels are sunk and the car body is inclined.

In this embodiment, a lower side bar 11 is arranged under the side plate 3 and a row of rollers 17 is arranged on the lower side bar to carry the bearing platform 1, so that the bearing platform 1 carrying the heavy gearbox 16 can be placed on the lower side bar. 11 , and then carry out the removal operation, so as to prevent the carrying platform from being suspended on the slide rail 19 to carry out the removal operation of the gearbox 16 , so that the removal process is safer and more stable. However, to move out after falling on the lower side bar 11, it is necessary to disassemble the pins at the four double-ear connectors 13 on the carrying platform 1, which affects the speed of disassembly and installation. Therefore, although this can achieve safer and easier movement The carrier platform 1 can only be used in a specific environment and situation.

The above are the preferred embodiments of the present invention, all changes made according to the technical solutions of the present invention, when the resulting functional effects do not exceed the scope of the technical solutions of the present invention, belong to the protection scope of the present invention.

Claims (10)

1. A portable assembled excavator gearbox disassembly and assembly tool, the gearbox (16) is mounted on the bottom of the excavator frame (5), characterized in that it comprises a bearing platform (1), a bearing steel frame and a lifting mechanism , the bearing steel frame is composed of a pair of cross bars (2) and two side plates (3) respectively connected at both ends of the cross bars (2), and the upper edge of the side plates (3) is bent to one side The upper edge strip (10) is formed at 90°, the two ends of the cross bar (2) are provided with groove rails (8) with openings facing downward, and the two ends of the upper edge strip (10) of the side plate (3) are respectively provided with The hanger (12) adapted to the groove rail (8), the side plate (3) is hung on the two side ends of the two cross bars (2) through the cooperation of the hanger (12) and the groove rail (8), and assembled A frame-shaped bearing steel frame is formed, and the bearing platform (1) is placed in the bearing steel frame; the lifting mechanism includes a hydraulic lifting rod (4), a slide rail (19) and a hydraulic pump, and the inner side of each side plate A sliding rail (19) is fixed horizontally on the upper part, and the two sliding rails (19) are arranged in parallel and opposite to each other in the bearing steel frame. The length of the sliding rail (19) is longer than the width of the side plate, and the sliding rail (19) is provided with A long slot (20), two hydraulic lifting rods (4) are installed on each sliding rail (19), and the upper end of the hydraulic lifting rod is fixed through the long slot (20) of the sliding rail (19) A pulley (21) is connected, and the hydraulic lifting rod is suspended on the sliding rail (19) through the pulley (21) rolling on the sliding rail (19); the four corners of the bearing platform (1) are respectively connected with the four hydraulic lifting rods. The bottom end is connected, the cross rod (2) is provided with a hanging rod (6) for installing the above-mentioned bearing steel frame on the excavator frame (5), and the hydraulic lifting rod (4) is connected to the Hydraulic pump connection. 2. The portable assembled excavator gearbox disassembly and assembly tool according to claim 1, characterized in that, the gearbox disassembly and assembly tool is a combined assembly type, and a pair of cross bars (2) are respectively installed on the The two sides of the frame (5) of the gearbox (16), and then the cross bar (2), side plate (3), slide rail (19), load platform (1), hydraulic lift rod (4) and The hydraulic pump is assembled, and then the gearbox (16) is smoothly and quickly disassembled or installed; when not in use, it is in a scattered and unassembled state for easy portability. 3. The portable assembled excavator gearbox disassembly and assembly tool according to claim 1, characterized in that the connection between the hydraulic lift rod (4) and the bearing platform (1) adopts a single-double-ear connection, The bottom end of the hydraulic lifting rod (4) is a single earring structure, and the four corners of the bearing platform (1) are respectively provided with double ear connecting pieces (13) adapted to the single earring (15). 4. The portable assembled excavator gearbox disassembly and assembly tool according to claim 1, characterized in that, the carrying platform (1) is provided with a gearbox supporting and fixing the shape of the bottom of the gearbox (15). block (14). 5. The portable assembled excavator gearbox disassembly tool according to claim 1, characterized in that the lower edge of the side plate (3) is bent 90° to the same side as the upper edge strip (10) to form a lower edge Strip (11), the lower side strips (11) of the two side plates (3) are each provided with a row of rollers (17) supporting the carrying platform, and the bottom surface of the carrying platform (1) is provided with two rollers (17). The roller chute (18) corresponding to the roller (17) is adapted to the size of the roller (17). 6 . The portable assembled excavator gearbox disassembly and assembly tool according to claim 1 , wherein the carrying platform ( 1 ) is made of Q235 structural steel with a thickness greater than 10 mm. 7 . 7. The portable assembled 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 plates (3) adopt N204E cylindrical ball bearings, The row of rollers (17) are 10 bearings installed at equal distances. 8 . The portable assembled excavator gearbox disassembly and assembly tool according to claim 1 , wherein the hydraulic pump adopts a CP-180 hand hydraulic pump. 9 . 9 . The portable assembled excavator gearbox disassembly and assembly tool according to claim 1 , characterized in that a blocking bar ( 23 ) is provided on the slide rail ( 19 ). 10 . 10. The portable assembled excavator gearbox disassembly and assembly tool according to claims 1-9, wherein the lifting mechanism comprises an electric push rod and a control device, and the electric push rod and the control device replace the A hydraulic lifting rod (4) and a hydraulic pump are used to control the lifting and lowering of the electric push rod through the control device.

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