Heavy-duty double-double-suspension excavator lower frame turnover device

Abstract

This utility model relates to a heavy-duty double-mounted double-suspension excavator undercarriage tilting device, including a base component, a column component, a lifting component, and a clamping arm component. The base component is installed in the factory pit, the column component is installed on the equipment base, the lifting component and guide wheels are installed together on the column component, and the clamping arm component is installed on the lifting frame for clamping the undercarriage to hold the workpiece. The base component includes a base body. Through the base component, column component, lifting component, and clamping arm component, the fully automatic tilting of the excavator undercarriage is realized. It is driven by an SEW motor reducer and hydraulic cylinders, the limit switch controls the extreme stop position of the device, and the pull rope encoder controls the working stop position of the device. The entire device operates smoothly, and the device positioning is accurate and rapid. It also adopts multiple safety protection measures such as mechanical blocking and sensors, and the safety performance is reliable.

Description

Technical Field

[0001] This utility model relates to the technical field of undercarriage of heavy-duty double-mounted double-suspension excavators, specifically to a tilting device for the undercarriage of heavy-duty double-mounted double-suspension excavators. Background Technology

[0002] With the rapid development of the heavy industry, vehicle specifications are constantly increasing, especially the size and weight of underframes in heavy vehicles and construction machinery. However, the load-bearing capacity of the commonly used tipping machines on the market is limited, making it difficult to meet the production needs of large underframes. This supply-demand imbalance leads to many difficulties for heavy equipment manufacturers during the production process, such as low production efficiency, frequent equipment replacement, and increased production costs.

[0003] Existing undercarriage tilting machines are generally designed with relatively low load capacity, making them unsuitable for the tilting requirements of large undercarriages. Forcing the use of underloaded tilting machines during production can lead to serious consequences such as equipment damage and production accidents. Furthermore, some tilting machines exhibit vibration and swaying during operation, affecting production accuracy and product quality. In addition, some tilting machines use outdated drive systems, making it difficult to achieve high-precision position control. Moreover, tilting machines are often designed for specific vehicle models or sizes, lacking versatility and flexibility. When the vehicle model or size changes, the tilting machine needs to be replaced or adjusted, increasing production and time costs. Therefore, we need to provide heavy-duty double-mounted, double-suspension excavator undercarriage tilting equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a heavy-duty double-mounted, double-suspension excavator underframe tilting device. Through a base component, column component, lifting component, and clamping arm component, it achieves fully automatic tilting of the excavator underframe. It is driven by an SEW motor reducer and hydraulic cylinders, with limit switches controlling the extreme stop position and a pull-rope encoder controlling the working stop position. The entire device operates smoothly and accurately and quickly. It also employs multiple safety protection measures, including mechanical blocks and sensors, ensuring reliable safety performance. This addresses the problems mentioned in the background art, where tilting machines are generally designed with low load capacity, unable to meet the tilting requirements of large underframes, and some tilting machines exhibit vibration and swaying during operation, affecting production accuracy and product quality, making high-precision position control difficult. Furthermore, tilting machines are often designed for specific vehicle models or sizes, lacking versatility and flexibility. When the vehicle model or size changes, the tilting machine needs to be replaced or adjusted.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heavy-duty double-mounted double-suspension excavator undercarriage tilting device, comprising:

[0006] The equipment includes a base component, a column component, a lifting component, and a clamping arm component. The base component is installed in a factory pit, the column component is installed on the equipment base, the lifting component and guide wheels are installed on the column component, and the clamping arm component is installed on the lifting frame for clamping the frame to hold the workpiece.

[0007] The base component includes a base body, a transverse hydraulic cylinder assembly, a pull-wire encoder assembly, a stopper assembly, a transverse switch assembly, an adjusting shim group, a linear slide rail, and a linear slider. The base body is installed on a pre-embedded steel plate in the positioner foundation. The transverse hydraulic cylinder assembly is bolted to the surface of the base body for the column component to move horizontally on the base body. The pull-wire encoder assembly is bolted to the base body. The stopper assembly is bolted to the base body to prevent the column component from protruding from the base body. The transverse switch assembly is fixedly mounted on the base body for electrical safety protection. The adjusting shim group is installed at the bottom of the transverse hydraulic cylinder assembly. The linear slide rail is fixed in a groove on the base body, and the linear slider is slidably mounted on the surface of the linear slide rail.

[0008] Preferably, the column component includes a column base, a lifting cable encoder, a transverse drag chain support component, a fall arrest device, a lifting switch assembly, a lifting cylinder assembly, and a column body. The column base is fixed on a linear slider, and the column body is fixedly installed on the top of the column base. A sprocket assembly is installed on the top of the column component. The lifting cylinder assembly is fixed on the surface of the column base, and the transverse drag chain support component and the lifting cable encoder are provided on the surface of the column base. The fall arrest device and the lifting switch assembly are both installed on the surface of the column body.

[0009] Preferably, the sprocket assembly includes a sprocket mounting base, double-row sprockets, sprocket shafts, double-row roller chains, chain guards, spacers, and clamping plates. The sprocket mounting base is fixed to the top of the column body, and two sprocket shafts are rotatably mounted inside the sprocket mounting base. Double-row sprockets are fixedly mounted on the surfaces of both sprocket shafts. Clamping plates are provided on the surfaces of the sprocket shafts to limit their movement. Spacers are provided inside the double-row sprockets. Double-row roller chains are engaged on the surfaces of the double-row sprockets. One end of the double-row roller chains is fixed to the extension end of the lifting cylinder assembly. A chain guard is fixedly mounted on the top of the sprocket mounting base.

[0010] Preferably, the lifting component includes a lifting frame, a connecting back plate, a chain connecting seat, a chain pin, a roller assembly, a rotary proximity switch assembly, a drive gear, a clamping end cover, a lifting switch stop block, a lifting drag chain bracket, a slewing bearing dust cover, a clamping plate, a slewing bearing body, and a motor reducer. The lifting frame is slidably mounted on the surface of the column body for adjusting the height of the lifting frame. The connecting back plate is fixed to the surface of the lifting frame. The roller assembly is installed inside the connecting back plate and inside the lifting frame. A motor reducer is fixedly mounted on the surface of the lifting frame. A drive gear is installed at the output end of the motor reducer. A clamping end cover is provided on the surface of the drive gear. A slewing bearing body and a slewing bearing dust cover are provided on one side of the lifting frame. A chain connecting seat with a chain pin is installed on the top of the lifting frame. The chain connecting seat is fixedly connected to one end of a double-row roller chain. A lifting switch stop block, a clamping plate, and a rotary proximity switch assembly are provided on the surface of the lifting frame.

[0011] Preferably, the clamping arm component includes a clamping arm body, a rotary proximity switch block, and a gripper assembly. The clamping arm body is fixedly mounted on the surface of the lifting frame. The gripper assembly is mounted on the surface of the clamping arm body via a connecting shaft. The rotary proximity switch block is mounted on the surface of the clamping arm body and serves as a trigger plate for the rotation sensor to control the stop position when the clamping arm rotates.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model achieves fully automatic tilting of the excavator underframe through base components, column components, lifting components, and clamping arm components. It is driven by an SEW motor reducer and hydraulic cylinders, with limit switches controlling the extreme stop position of the equipment and a pull rope encoder controlling the working stop position of the equipment. The entire equipment operates smoothly and is accurately and quickly positioned. It also adopts multiple safety protection measures such as mechanical blocks and sensors, ensuring reliable safety performance. Attached Figure Description

[0014] Figure 1 This is a front sectional view of the structure of this utility model;

[0015] Figure 2 This is a side sectional view of the structure of this utility model;

[0016] Figure 3 This is a top view of the base component of this utility model;

[0017] Figure 4 This is a perspective view of the base component of this utility model;

[0018] Figure 5 This is a side view of the column component of this utility model;

[0019] Figure 6This is a perspective view of the column component of this utility model;

[0020] Figure 7 This is a side view of the lifting component of this utility model;

[0021] Figure 8 This is a drawing of the lifting cable chain bracket of this utility model;

[0022] Figure 9 This is a perspective view of the lifting component of this utility model;

[0023] Figure 10 This is a cross-sectional view of the sprocket assembly of this utility model;

[0024] Figure 11 This is a perspective view of the sprocket assembly of this utility model;

[0025] Figure 12 This is a perspective view of the clamping arm component of this utility model.

[0026] In the diagram: 1. Base component; 11. Base body; 12. Horizontal movement cylinder assembly; 13. Cable encoder assembly; 14. Stopper component; 15. Horizontal movement switch assembly; 16. Adjusting shim assembly; 17. Linear slide rail; 18. Linear slider; 2. Column component; 21. Column base; 22. Lifting cable encoder; 23. Horizontal movement drag chain bracket component; 24. Fall arrestor; 25. Lifting switch assembly; 26. Lifting cylinder assembly; 27. Column body; 3. Lifting component; 31. Lifting frame; 32. Connecting back plate; 33. Chain connection 34. Chain pin; 35. Roller assembly; 36. Rotary proximity switch assembly; 37. Drive gear; 38. Clamping end cover; 39. Lifting switch stop block; 4. Clamping arm assembly; 41. Clamping arm body; 42. Rotary proximity switch stop block; 43. Claw assembly; 5. Sprocket assembly; 51. Sprocket mounting seat; 52. Double row sprocket; 53. Sprocket shaft; 54. Double row roller chain; 55. Chain guard; 56. Spacer; 57. Clamping plate; 6. Lifting drag chain bracket; 7. Slewing bearing dust cover; 9. Slewing bearing body; 10. Motor reducer. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-12This utility model provides a technical solution: a heavy-duty double-mounted double-suspension excavator undercarriage tilting device, comprising:

[0029] The equipment includes a base component 1, a column component 2, a lifting component 3, and a clamping arm component 4. The base component 1 is installed in the pit of the factory, the column component 2 is installed on the equipment base, the lifting component 3 and the guide wheel are installed on the column component 2 together, and the clamping arm component 4 is installed on the lifting frame 31 to clamp the frame and thus clamp the workpiece.

[0030] The base component 1 includes a base body 11, a transverse hydraulic cylinder assembly 12, a pull-wire encoder assembly 13, a stopper assembly 14, a transverse switch assembly 15, an adjusting shim group 16, a linear slide rail 17, and a linear slider 18. The base body 11 is installed on a steel plate pre-embedded in the positioner foundation. The transverse hydraulic cylinder assembly 12 is fixed to the surface of the base body 11 by bolts and is used for the column component 2 to move horizontally on the base body 11. The pull-wire encoder assembly 13 is installed on the base body 11 by bolts. The stopper assembly 14 is installed on the base body 11 by bolts and is used to prevent the column component 2 from rushing out of the base body 11. The transverse switch assembly 15 is fixedly installed on the base body 11 for electrical safety protection. The adjusting shim group 16 is installed at the bottom of the transverse hydraulic cylinder assembly 12. The linear slide rail 17 is fixed in a groove on the base body 11. The linear slider 18 is slidably installed on the surface of the linear slide rail 17.

[0031] Specifically, the base component 1 is installed in the factory pit, the column component 2 is installed on the equipment base, the lifting component 3 and guide wheels are installed on the column component 2, and the clamping arm component 4 is installed on the lifting frame 31 for clamping the frame. The base component 1 includes a base body 11, a transverse hydraulic cylinder assembly 12, a wire encoder assembly 13, etc. The base body 11 is fixed to the pre-embedded steel plate, the transverse hydraulic cylinder assembly 12 drives the column component 2 to move horizontally, the wire encoder assembly 13 controls the stopping position of the horizontal movement, the stopper component 14 prevents the column from rushing out, the transverse switch assembly 15 provides electrical safety protection, the adjusting shim group 16 adjusts the leveling cylinder, and the linear slide rail 17 and the slider realize the movement.

[0032] The horizontal movement cylinder assembly 12 drives the column component 2 to move horizontally on the base body 11. The horizontal movement stop position is precisely controlled by the pull-wire encoder assembly 13. The linear slide rail 17 and the slider ensure the smoothness of the horizontal movement, realizing the horizontal movement control of the column component 2 on the base, ensuring the smooth operation and accurate positioning of the equipment. At the same time, the stopper component 14 and the horizontal movement switch assembly 15 provide safety protection.

[0033] The column component 2 includes a column base 21, a lifting cable encoder 22, a transverse drag chain bracket component 23, a fall protection device 24, a lifting switch assembly 25, a lifting cylinder assembly 26, and a column body 27. The column base 21 is fixed on the linear slider 18, and the column body 27 is fixedly installed on the top of the column base 21. A sprocket assembly 5 is installed on the top of the column component 2. The lifting cylinder assembly 26 is fixed on the surface of the column base 21, and the transverse drag chain bracket component 23 and the lifting cable encoder 22 are provided on the surface of the column base 21. The fall protection device 24 and the lifting switch assembly 25 are both installed on the surface of the column body 27.

[0034] Furthermore, the column base 21 is fixed to the linear slider 18, and the column body 27 is mounted on top. The top has a sprocket assembly 5. The surface of the column base 21 has a lifting cylinder assembly 26, a transverse drag chain bracket component 23, and a lifting cable encoder 22. The surface of the column body 27 is equipped with an anti-fall device 24 and a lifting switch assembly 25. The lifting cylinder assembly 26 is connected to the lifting component 3 via a chain, driving the lifting component 3 to rise and fall. The lifting cable encoder 22 controls the stop position of the lifting component 3. The transverse drag chain bracket component 23 moves the cable with the column. The anti-fall device 24 prevents the lifting component 3 from falling. The lifting switch assembly 25 provides electrical safety protection, realizes the lifting motion control of the lifting component 3, ensures smooth lifting and accurate positioning, and also has guiding and counterweight functions. In addition, the safety of the equipment is improved through multiple safety devices.

[0035] The sprocket assembly 5 includes a sprocket mounting base 51, double-row sprockets 52, sprocket shafts 53, double-row roller chains 54, chain guards 55, spacers 56, and clamping plates 57. The sprocket mounting base 51 is fixed to the top of the column body 27, and two sprocket shafts 53 are rotatably mounted inside the sprocket mounting base 51. Double-row sprockets 52 are fixedly mounted on the surface of each of the two sprocket shafts 53. Clamping plates 57 are provided on the surface of the sprocket shafts 53 to limit the movement of the sprocket shafts 53. Spacers 56 are provided inside the double-row sprockets 52. Double-row roller chains 54 are meshed on the surface of the double-row sprockets 52. One end of the double-row roller chains 54 is fixed to the extension end of the lifting cylinder assembly 26. Chain guards 55 are fixedly mounted on the top of the sprocket mounting base 51.

[0036] It is worth noting that the sprocket mounting base 51 is fixed to the top of the column body 27 and contains two sprocket shafts 53. Double-row sprockets 52 are fixed on the shafts. The sprocket shafts 53 are limited by a retaining plate 57. The double-row sprockets 52 contain a spacer 56 and a double-row roller chain 54 meshes on their surface. One end of the chain is connected to the extension end of the lifting cylinder assembly 26. The top has a chain guard 55. The extension of the lifting cylinder assembly 26 drives the double-row roller chain 54 to move, and then through the sprocket assembly 5, the lifting component 3 is lifted and lowered. Through the transmission between the sprocket assembly 5 and the chain, the power of the lifting cylinder assembly 26 is transmitted to the lifting component 3, ensuring the stable transmission of the lifting component 3's lifting and lowering movement.

[0037] The lifting component 3 includes a lifting frame 31, a connecting back plate 32, a chain connecting seat 33, a chain pin 34, a roller assembly 35, a rotary proximity switch assembly 36, a drive gear 37, a clamping end cover 38, a lifting switch stop block 39, a lifting drag chain bracket 6, a slewing bearing dust cover 7, a clamping plate 57, a slewing bearing body 9, and a motor reducer 10. The lifting frame 31 is slidably mounted on the surface of the column body 27 for adjusting the height of the lifting frame 31. The connecting back plate 32 is fixed to the surface of the lifting frame 31, and the roller assembly 35 is mounted on the connecting back plate 32. Inside the lifting frame 31, a motor reducer 10 is fixedly installed on the surface of the lifting frame 31. A drive gear 37 is installed at the output end of the motor reducer 10. A pressing end cover 38 is provided on the surface of the drive gear 37. A slewing bearing body 9 and a slewing bearing dust cover 7 are provided on one side of the lifting frame 31. A chain connecting seat 33 with a chain pin 34 is installed on the top of the lifting frame 31. The chain connecting seat 33 is fixedly connected to one end of a double-row roller chain 54. A lifting switch stop block 39, a clamping plate 57 and a rotary proximity switch assembly 36 are provided on the surface of the lifting frame 31.

[0038] It should be noted that the roller assembly 35 is installed inside the connecting back plate 32 and the lifting frame 31, and the surface is equipped with a motor reducer 10. The output end has a drive gear 37, the gear has a pressing end cover 38, one side has a slewing bearing body 9 and a dust cover, the top has a chain connecting seat 33 with a chain pin 34 connected to a double-row roller chain 54, and the surface has a lifting switch stop block 39.

[0039] The motor reducer 10 drives the drive gear 37, which forms a gear transmission with the slewing bearing body 9, driving the clamping arm component 4 to rotate; the lifting cylinder assembly 26 drives the lifting frame 31 to rise and fall via a chain and sprocket assembly 5; the lifting switch block 39 controls the lifting stop position; the rotary proximity switch assembly 36 acts as a rotary sensor signaling plate, realizing the rotational movement of the clamping arm component 4 and the lifting movement of the lifting frame 31, ensuring smooth movement, accurate positioning, and meeting the operation requirements of the workpiece.

[0040] The clamping arm component 4 includes a clamping arm body 41, a rotary proximity switch block 42, and a gripper assembly 43. The clamping arm body 41 is fixedly mounted on the surface of the lifting frame 31. The gripper assembly 43 is mounted on the surface of the clamping arm body 41 via a connecting shaft. The rotary proximity switch block is mounted on the surface of the clamping arm body 41 and serves as a signal plate for the rotation sensor to control the stop position when the clamping arm rotates.

[0041] Specifically, the gripper assembly 43 clamps the underframe, and the rotary proximity switch block 42 acts as a rotary sensor signaling board to control the stop position of the gripper arm rotation, thereby achieving the gripping of the underframe and precisely controlling the stop position of the gripper arm rotation. This satisfies the flipping operation of the underframe for different vehicle models and improves the level of production automation.

[0042] When the horizontal hydraulic cylinder supplies oil, the transverse cylinder assembly 12 starts to work, driving the column component 2 and other translation components to perform horizontal linear reciprocating motion on the linear slide rail 17 of the base. During this process, the pull-wire encoder assembly 13 monitors the translation position in real time. When the preset working position is reached, the control component stops moving. The transverse switch assembly 15 plays an electrical safety protection role, and the mechanical stopper component 14 at the end of the base can prevent the column component 2 from rushing out of the base, ensuring the accuracy and safety of the horizontal movement.

[0043] In vertical motion, after the vertical hydraulic cylinder supplies oil, the lifting cylinder assembly 26 drives the lifting component 3 to move up and down through the transmission of the chain and sprocket assembly 5. The lifting cable encoder 22 will precisely control the stop position of the lifting component 3. The lifting switch assembly 25 provides electrical safety protection, while the anti-fall device 24 can prevent the lifting component 3 from falling, ensuring the stability and safety of vertical motion.

[0044] The rotational motion is driven by the SEW motor reducer 10. The drive gear 37 on its output shaft meshes with the slewing bearing, driving the clamping arm component 4 to rotate. The rotational proximity switch component 36 or the impact block acts as the signal plate of the rotation sensor, controlling the stop position of the clamping arm rotation to achieve precise rotation.

[0045] In addition, the rope encoder and limit switch jointly control the operation of the equipment. The hydraulic control system can adjust the flow and pressure of the hydraulic cylinder to ensure stable operation of the equipment under different speeds and loads. With various motion combinations, the equipment can achieve fully automatic tilting of the 10-ton undercarriage, with smooth operation, accurate and rapid positioning. Furthermore, multiple safety protection measures such as mechanical blocks and sensors ensure the safe and reliable operation of the equipment.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heavy-duty double-mounted double-suspension excavator undercarriage tilting device, characterized in that, include: The base component (1), column component (2), lifting component (3) and clamping arm component (4) are installed in the pit of the factory building, the column component (2) is installed on the equipment base, the lifting component (3) and the guide wheel are installed on the column component (2), and the clamping arm component (4) is installed on the lifting frame (31) for clamping the frame to achieve clamping of the workpiece. The base component (1) includes a base body (11), a transverse hydraulic cylinder assembly (12), a wire encoder assembly (13), a stopper component (14), a transverse switch assembly (15), an adjusting shim group (16), a linear slide rail (17), and a linear slider (18). The base body (11) is installed on a steel plate pre-embedded in the positioner foundation. The transverse hydraulic cylinder assembly (12) is fixed to the surface of the base body (11) by bolts and is used for the column component (2) to move horizontally on the base body (11). The wire encoder assembly (14) is fixed to the surface of the base body (11) by bolts. 3) The stopper component (14) is bolted to the base body (11) to prevent the column component (2) from rushing out of the base body (11). The horizontal movement switch assembly (15) is fixedly mounted on the base body (11) for electrical safety protection. The adjusting shim group (16) is installed at the bottom of the horizontal movement cylinder assembly (12). The linear slide rail (17) is fixed in the groove on the base body (11). The linear slider (18) is slidably mounted on the surface of the linear slide rail (17).

2. The heavy-duty double-mounted double-suspension excavator undercarriage tilting device according to claim 1, characterized in that: The column component (2) includes a column base (21), a lifting cable encoder (22), a transverse drag chain bracket component (23), a fall arrest device (24), a lifting switch assembly (25), a lifting cylinder assembly (26), and a column body (27). The column base (21) is fixed on a linear slider (18), and the column body (27) is fixedly installed on the top of the column base (21). A sprocket assembly (5) is installed on the top of the column component (2). The lifting cylinder assembly (26) is fixed on the surface of the column base (21), and the transverse drag chain bracket component (23) and the lifting cable encoder (22) are provided on the surface of the column base (21). The fall arrest device (24) and the lifting switch assembly (25) are both installed on the surface of the column body (27).

3. The heavy-duty double-mounted double-suspension excavator undercarriage tilting device according to claim 2, characterized in that: The sprocket assembly (5) includes a sprocket mounting base (51), double-row sprockets (52), sprocket shafts (53), double-row roller chains (54), chain guards (55), spacers (56), and clamping plates (57). The sprocket mounting base (51) is fixed to the top of the column body (27), and two sprocket shafts (53) are rotatably installed inside the sprocket mounting base (51). Double-row sprockets (52) are fixedly installed on the surfaces of the two sprocket shafts (53). Clamping plates (57) are provided on the surfaces of the sprocket shafts (53) to limit the movement of the sprocket shafts (53). Spacers (56) are provided inside the double-row sprockets (52). Double-row roller chains (54) mesh with the surfaces of the double-row sprockets (52). One end of the double-row roller chains (54) is fixed to the extension end of the lifting cylinder assembly (26). Chain guards (55) are fixedly installed on the top of the sprocket mounting base (51).

4. The heavy-duty double-mounted double-suspension excavator undercarriage tilting device according to claim 1, characterized in that: The lifting component (3) includes a lifting frame (31), a connecting back plate (32), a chain connecting seat (33), a chain pin (34), a roller assembly (35), a rotary proximity switch assembly (36), a drive gear (37), a clamping end cover (38), a lifting switch stop block (39), a lifting drag chain bracket (6), a slewing bearing dust cover (7), a clamping plate (57), a slewing bearing body (9), and a motor reducer (10). The lifting frame (31) is slidably mounted on the surface of the column body (27) to drive the height adjustment of the lifting frame (31). The connecting back plate (32) is fixed to the surface of the lifting frame (31), and the roller assembly (35) is mounted on the connecting back plate (32). Inside the lifting frame (31), a motor reducer (10) is fixedly installed on the surface of the lifting frame (31). A drive gear (37) is installed at the output end of the motor reducer (10). A pressing end cover (38) is provided on the surface of the drive gear (37). A slewing bearing body (9) and a slewing bearing dust cover (7) are provided on one side of the lifting frame (31). A chain connecting seat (33) with a chain pin (34) is installed on the top of the lifting frame (31). The chain connecting seat (33) is fixedly connected to one end of a double-row roller chain (54). A lifting switch stop block (39), a card plate (57) and a rotary proximity switch assembly (36) are provided on the surface of the lifting frame (31).

5. The heavy-duty double-mounted double-suspension excavator undercarriage tilting device according to claim 1, characterized in that: The clamping arm component (4) includes a clamping arm body (41), a rotary proximity switch block (42), and a gripper assembly (43). The clamping arm body (41) is fixedly mounted on the surface of the lifting frame (31). The gripper assembly (43) is mounted on the surface of the clamping arm body (41) via a connecting shaft. The rotary proximity switch block is mounted on the surface of the clamping arm body (41) and serves as a signal plate for the rotation sensor to control the stop position when the clamping arm rotates.

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