Bucket rod rear shaft seat lifting assembly tool

Abstract

The utility model provides a bucket rod rear shaft seat lifting assembly tool, which relates to the technical field of excavator assembly and comprises a pin shaft, a shaft hole used for being coaxially matched with a rear shaft seat, and a stopper detachably matched with the outer circumferential surface of the pin shaft and used for abutting against the end surface of the rear shaft seat, one end of the lifting rod is detachably connected to one end of the pin shaft, and the other end extends out of the outer circumferential surface of the pin shaft to form a lifting connecting part; the position adjusting piece comprises a position adjusting rod and a locking piece, a sliding groove is formed in the hanging rod, one end of the position adjusting rod is installed in the sliding groove through the locking piece, and the position adjusting rod is used for abutting against the lug part of the rear axle seat so as to position the annular posture of the rear axle seat; in order to solve the problem that the posture is inconvenient to control when the rear axle seat is hoisted and assembled at present, the axial position is positioned by adopting a stop on a pin shaft, and the annular posture of the rear axle seat is positioned by adopting a position adjusting rod, so that the rear axle seat can be hoisted in place in a required posture, and the hoisting precision is improved to ensure the subsequent assembly precision and the processing efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator assembly, in particular to a bucket arm rear axle seat hanging assembly tooling. Background Art

[0002] During the processing of the excavator boom, the rear axle seat needs to be combined with the boom's box structure and then welded and fixed. A U-shaped groove is reserved on the boom's box structure to accommodate the rear axle seat. The rear axle seat is hoisted so that it corresponds to the position of the U-shaped groove, and then the ear at the end of the rear axle seat is adjusted to be placed in the U-shaped groove, and the U-shaped groove and the ear are welded and fixed.

[0003] The current lifting process is to first lift the rear axle seat above the boom, and then thread the assembly pin to adjust the position of the rear axle seat; due to the special structure of the rear axle seat, ears corresponding to the U-shaped groove are provided at both ends of the middle cylinder, and the lifting device grabs the middle cylinder position, but it is easy to rotate during grabbing, and precise positioning in the axial direction cannot be achieved, and axial sliding is easy to occur. The state of the rear axle seat is not asked, there is a high safety hazard, and the method of lifting first and then adjusting the posture is adopted, and the processing efficiency is low. A Chinese patent (publication number CN107601260B) discloses a lifting tool for blades, which uses a pin to penetrate a lifting hole and then clamp it for positioning, so as to hook and position the axial position of the slurry, and a lifting ring establishes a connection between the blade and the lifting equipment to maintain the lifting balance of the blade; however, it is not suitable for the lifting scenario of the rear axle seat. The rear axle seat requires precise circumferential positioning and axial positioning when assembled with the boom, and the method of penetrating the pin and clamping it through the end face cannot provide precise circumferential positioning; the pin in the prior art will be directly removed after it is matched with the lifting hole, and cannot be used as an auxiliary equipment for subsequent assembly. The lifting hole is only used for lifting, and the assembly still needs to be configured with additional assembly positioning elements and positioning processes, which increases the complexity of the assembly. Utility Model Content

[0004] The purpose of the utility model is to provide a boom rear axle seat lifting assembly tooling to address the defects of the prior art, which solves the problem by using a stopper on a pin shaft to locate the axial position and an adjusting rod to locate the circumferential posture of the rear axle seat. The rear axle seat can be lifted into place in a required posture, thereby improving the lifting accuracy to ensure subsequent assembly accuracy and processing efficiency.

[0005] In order to solve the above problems, the following solutions are adopted:

[0006] A bucket arm rear axle seat hanging assembly tool, comprising:

[0007] A pin shaft is used to coaxially match the shaft hole of the rear axle seat, and the outer circumferential surface of the pin shaft can be detachably matched to a stopper for abutting against the end surface of the rear axle seat;

[0008] A suspension rod, one end of which is detachably connected to one end of the pin shaft, and the other end of which extends outside the outer circumference of the pin shaft to form a suspension connection portion;

[0009] The adjusting member includes an adjusting rod and a locking member. A sliding groove is provided on the suspension rod. One end of the adjusting rod is installed in the sliding groove through the locking member. The adjusting rod is used to abut the ear of the rear axle seat to position the circumferential posture of the rear axle seat. The adjusting rod changes the distance and / or angle between the adjusting rod and the axis of the pin shaft through the movement of the locking member along the sliding groove.

[0010] Furthermore, positioning rods are respectively provided on both sides of the suspension rod axis, and the positioning rods located on the opposite sides of the suspension rod axis abut against different positions of the ears of the rear axle seat.

[0011] Furthermore, the end of the pin shaft that is not connected to the suspension rod is a free end, the end of the adjustment rod away from the locking member extends toward the free end of the pin shaft, and the position where the adjustment rod contacts the ear avoids the ear welding position.

[0012] Furthermore, the outer circumferential surface of the pin shaft is provided with recesses that cooperate with the stopper, and the recesses are arranged in a plurality of groups at intervals in the axial direction of the pin shaft, and each group has a plurality of recesses.

[0013] Furthermore, the recess is a through hole, and the stopper is penetrated through the through hole to locate the relative axial position of the pin shaft and the rear axle seat.

[0014] Furthermore, the slide groove is distributed along the axis of the boom, and the locking member is slidably installed on the slide groove. The locking member can lock its position in the slide groove or unlock it to move along the slide groove.

[0015] Furthermore, an ear plate is provided at one end of the pin shaft, and the suspension rod is detachably connected to the ear plate via a fastener.

[0016] Furthermore, the suspension rod is provided with a bent section, and the suspension rod enables the lifting connection part to be located vertically above the center of gravity of the balanced state through the bent section.

[0017] Furthermore, the lifting connection portion is a lifting ring.

[0018] Furthermore, the locking piece is a fastening element.

[0019] Compared with the prior art, the utility model has the following advantages and positive effects:

[0020] (1) In order to solve the problem that the posture of the rear axle seat is difficult to control when it is currently hoisted, a stopper on the pin shaft is used to locate the axial position, and an adjusting rod is used to locate the circumferential posture of the rear axle seat. This can enable the rear axle seat to be hoisted into place in the required posture, improve the hoisting accuracy, and ensure the subsequent assembly accuracy and processing efficiency.

[0021] (2) By using a detachable hanging rod and pin, the pin can remain in cooperation with the rear axle seat after being hoisted into place, and directly participate in the subsequent assembly and welding operations, avoiding re-establishing and repeating positioning, and improving the efficiency of subsequent assembly and welding.

[0022] (3) The pin shaft and the suspension rod are detachably connected, so that the suspension rod can be combined with pin shafts of various specifications. The adjustment rod can move along the slide groove to change the relative position with the pin shaft, so that the entire suspension assembly tooling can be adapted to rear axle seats of different specifications, thereby improving the utilization rate of the suspension assembly tooling.

[0023] (4) The adjusting rod moves along the slide groove through the locking member. While changing its position, the angle can be adjusted so that the contact position between the adjusting rod and the ear is matched, thereby avoiding damage to the ear or the adjusting rod due to stress concentration. In addition, the angle adjustment can also increase the contact working range of the adjusting rod, thereby improving the scope of application.

[0024] (5) According to the posture requirements when assembling the rear axle seat and the boom, the circumferential posture of the rear axle seat is adjusted and positioned using the positioning rod to keep the rear axle seat from rotating and stabilize the posture, thereby avoiding the secondary posture adjustment process after lifting and improving assembly efficiency. In addition, the connection position of the positioning rod and the ear avoids the welding position, which helps to quickly position and fix after assembly.

[0025] (6) The functions of the stopper and the recess are not only to prevent lateral slippage during the lifting process and to ensure the relative position of the rear axle seat; in addition, for rear axle seats with the same shaft hole diameter but different axial lengths, the matching position of the stopper and the recess can be adjusted, thereby changing the distribution position of the stopper in the axial direction of the pin shaft, adapting to rear axle seats with different axial size specifications, and improving the applicability of the lifting assembly tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0027] Figure 1 It is a schematic diagram of the arm rear axle seat hanging assembly tooling matching the rear axle seat in the embodiment of the utility model.

[0028] Figure 2 It is a schematic diagram of the tooling of the boom rear axle seat hanging assembly in an embodiment of the utility model.

[0029] Figure 3 It is an exploded schematic diagram of the boom rear axle seat hanging assembly tooling in the embodiment of the utility model.

[0030] Among them, 1. suspension rod, 2. pin shaft, 3. locking piece, 4. fastener, 5. ear plate, 6. stopper, 7. recess, 8. adjustment rod, 9. rear axle seat, 10. ear, 11. axle hole, 12. welding position. DETAILED DESCRIPTION

[0031] In a typical embodiment of the present invention, Figure 1-Figure 3As shown, a boom rear axle seat lifting assembly tooling is provided.

[0032] The rear axle seat 9 is an irregular shape, refer to Figure 3 Schematic diagram of the middle rear axle seat 9, the rear axle seat 9 includes a central cylinder and ears 10 at both ends, the ears 10 are local ring structures partially distributed around the central cylinder, and in actual processing, a cylinder with a local ring plate is connected to the end of the central cylinder. Therefore, its mass distribution is not uniform, and axial sliding and circumferential rotation are prone to occur during the grabbing and lifting process of the central cylinder, which is prone to safety problems such as grabbing failure and falling. In addition, it is inconvenient to accurately control the posture of the rear axle seat 9 during the grabbing and lifting process, and a secondary adjustment of the posture is required, which affects the assembly efficiency.

[0033] Based on the above problems, this embodiment provides a boom rear axle seat lifting assembly tooling, which can not only realize the stable grabbing and lifting of the rear axle seat 9, but also constrain and maintain the posture of the rear axle seat 9 to meet the needs of assembly. The pin 2 is inserted into the axial hole 11 of the rear axle seat 9, and the coaxial fit forms a radial limit. The stopper 6 is provided to connect the pin 2 to form an axial limit, and the locking member 3 is used to form an annular limit to prevent the rear axle seat 9 from moving in the axial, radial and annular directions, so as to achieve the purpose of stable movement and posture control.

[0034] like Figure 1 As shown, the boom rear axle seat lifting assembly tooling includes a pin shaft 2, a lifting rod 1 and an adjusting rod 8, which solves the positioning problem of the rear axle seat 9 during the lifting process, especially the precise control of the circumferential posture and axial position, and takes into account the structural characteristics and lifting requirements of the rear axle seat 9 to improve the lifting accuracy and subsequent assembly efficiency.

[0035] The pin 2 is used to coaxially match the axial hole 11 of the rear axle seat 9, and the outer circumferential surface of the pin 2 can be detachably matched with the stopper 6 used to abut the end face of the rear axle seat 9; the pin 2 is used to coaxially match with the axial hole 11 of the rear axle seat 9. After the coaxial matching, the pin 2 constrains the radial position of the rear axle seat 9 to prevent its radial shaking and ensure the stability of the rear axle seat 9 during the lifting process. At the same time, the outer circumferential surface of the pin 2 can be detachably matched with the stopper 6. When the pin 2 is inserted into the rear axle seat 9, the stopper 6 can be removed so that the pin 2 can smoothly penetrate into the axial hole 11 of the rear axle seat 9. After the pin 2 is inserted into the axial hole 11 of the rear axle seat 9, the stopper 6 is installed to abut the end face of the rear axle seat 9 to prevent the pin 2 from axially moving in the axial hole 11 of the rear axle seat 9, thereby realizing the precise positioning of the axial position of the rear axle seat 9.

[0036] At present, it is inconvenient to perform circumferential positioning of the rear axle seat 9 at its central cylindrical position. Therefore, in this embodiment, circumferential positioning is performed at the ear portion 10 of the rear axle seat 9. There is a gap between the outer periphery of the ear portion 10 and the pin 2, and the corresponding circumferential positioning element needs to be placed at the outer periphery of the ear portion 10 and in contact with it to achieve this. Therefore, in this embodiment, a combination of a suspension rod 1 and a positioning member is used.

[0037] The suspension rod 1 has one end detachably connected to one end of the pin shaft 2, and the other end extends outside the outer circumference of the pin shaft 2 to form a lifting connection portion, so that the suspension rod 1 can stably support the pin shaft 2 and the rear axle seat 9, and is connected to an external lifting device through the lifting connection portion to realize the lifting of the rear axle seat 9. A slide groove is provided on the suspension rod 1 as the installation position of the adjustment member.

[0038] The positioning member can solve the positioning problem of the circumferential posture of the rear axle seat 9, and it includes a positioning rod 8 and a locking member 3. A slide groove is provided on the suspension rod 1, and one end of the positioning rod 8 is installed in the slide groove through the locking member 3. The main function of the positioning rod 8 is to abut the ear 10 of the rear axle seat 9, thereby positioning the circumferential posture of the rear axle seat 9. The locking member 3 is used to fix the position of the positioning rod 8 in the slide groove to ensure its stability during the lifting process. In addition, the positioning rod 8 can also move along the slide groove through the locking member 3, thereby changing the spacing between the positioning rod 8 and the axis of the pin 2, adapting to the rear axle seat 9 of different radial sizes, and can also change the angle between the positioning rod 8 and the axis of the pin 2, adapting to the inclined surface of different contact positions so that the positioning rod 8 can fit the contact position of the ear 10, and the positioning rod 8 can accurately abut the ear 10 of the rear axle seat 9, thereby effectively positioning the circumferential posture of the rear axle seat 9, and coping with rear axle seats 9 of different specifications and lifting requirements. The problem that the posture of the rear axle seat 9 is difficult to control during the lifting process is solved, and the lifting accuracy is improved.

[0039] Since the suspension rod 1 and the pin 2 are detachably connected, and the adjustment rod 8 can move along the slide slot, the tooling can be adapted to rear axle seats 9 of different specifications. The length of the pin 2 can be solved by replacing different pins 2, and the diameter of the pin 2 can also be achieved by replacing different pins 2; the spacing and angle between the adjustment rod 8 and the axis of the pin 2 can be adjusted according to actual needs, which greatly improves the utilization rate of the tooling.

[0040] The arm rear axle seat lifting assembly tooling realizes the precise positioning and stable support of the rear axle seat 9 during the lifting process through the coordinated work of the pin shaft 2, the lifting rod 1 and the positioning member. It not only improves the lifting accuracy and efficiency, but also provides convenience for subsequent assembly work.

[0041] In addition, the suspension rod 1 and the pin 2 are detachably connected and remain connected during the assembly process. After the pin 2 is hoisted in place, it can retain the cooperation with the rear axle seat 9 and directly participate in the subsequent assembly and welding work. This avoids the process of repositioning and repeated positioning, and significantly improves the efficiency of subsequent assembly and welding.

[0042] The tooling design of the boom rear axle seat hoisting assembly is reasonable, the operation is simple and convenient, and the rear axle seat 9 can be quickly positioned and fixed, which reduces the complicated steps in the hoisting and assembly process and improves the work efficiency.

[0043] like Figure 2 As shown, the bottom end of the suspension rod 1 and the left end of the pin shaft 2 are connected by a fastener 4, and the adjusting rod 8 is installed in the slide groove at the bottom of the suspension rod 1 through the locking member 3. The locking member 3 can switch between the locked and unlocked states. When the locking member 3 is in the unlocked state, the locking member 3 moves in the slide groove, which can drive the adjusting rod 8 to change its position relative to the slide groove.

[0044] In actual use, during the assembly process of the rear axle seat 9 of the excavator boom, the right end of the pin 2 is inserted into the shaft hole 11 of the rear axle seat 9. According to the different lengths of the rear axle seat 9, a stopper 6 is arranged on the pin 2 to prevent the rear axle seat 9 from shaking in the axial direction during the process, and to prevent the rear axle seat 9 from sliding sideways and falling. At the same time, the position of the adjustment rod 8 is adjusted to make it abut against the ear 10 of the rear axle seat 9 to prevent the rear axle seat 9 from rotating, thus solving the problem of the unstable posture of the rear axle seat 9. When the rear axle seat 9 is hoisted onto the assembly tooling, the fastener 4 is removed, the hoisting rod 1 is removed, and the pin 2 is retained for subsequent assembly and welding work.

[0045] It should be pointed out that during the hoisting process, if the rear axle seat 9 is not constrained in the circumferential position by the adjustment rod 8, the rear axle seat 9 is likely to rotate in the circumferential direction. Because the rear axle seat 9 itself has no fixed support points to limit its circumferential freedom, it is not enough to rely solely on the axial positioning of the suspension rod 1 and the pin 2. During the hoisting process, due to the action of external forces or the movement of the hoisting equipment, the rear axle seat 9 is likely to rotate in the circumferential direction, resulting in instability of the posture, which in turn affects the subsequent assembly work.

[0046] Adjustment rods 8 are provided on both sides of the axis of the boom 1. The adjustment rods 8 on the opposite sides of the axis of the boom 1 abut against different positions of the ears 10 of the rear axle seat 9, constraining the circumferential position of the rear axle seat 9 from at least two positions of the ears 10, and stabilizing the ears 10 of the rear axle seat 9 from both sides. Through the coordinated work of the adjustment rods 8 on both sides, the circumferential posture of the rear axle seat 9 can be more effectively constrained to prevent it from rotating or shifting during the lifting process. At the same time, the adjustment rods 8 on the opposite sides of the axis of the boom 1 abut against different positions of the ears 10 of the rear axle seat 9, which helps to achieve force balance and improve the stability of the entire lifting assembly tooling.

[0047] In this embodiment, constraints are performed on both sides of the rear axle seat 9. If bilateral constraint is not performed but unilateral constraint is adopted, that is, the adjusting rod 8 is only set on one side of the lifting rod 1 to constrain the circumferential position of the rear axle seat 9, the unilateral constraint cannot provide sufficient stability. The rear axle seat 9 is prone to tilt or deflection during the lifting process, resulting in an unstable posture, and the reverse reset after rotating to the side where no constraint is set will impact the unilaterally constrained adjusting rod 8. Long-term or multiple lifting operations may cause structural deformation or damage of the rear axle seat 9, affecting its service life.

[0048] Furthermore, the positioning effect of the unilateral constraint is relatively poor, and the circumferential position of the rear axle seat 9 may not be accurately controlled, which results in the need for additional adjustments in subsequent assembly work, thereby reducing work efficiency and positioning accuracy.

[0049] Therefore, in this embodiment, in order to ensure the stability of the assembly process and the accurate positioning of the rear axle seat 9, a double-sided constraint method is adopted, that is, a positioning rod 8 is set on both sides of the suspension rod 1 to constrain the circumferential position of the rear axle seat 9. Sufficient stability and positioning accuracy can be provided to ensure the smooth progress of subsequent assembly work.

[0050] The end of the pin shaft 2 that is not connected to the suspension rod 1 is a free end, and the end of the adjusting rod 8 away from the locking member 3 extends toward the free end of the pin shaft 2. The position where the adjusting rod 8 contacts the ear 10 avoids the welding position 12 of the ear 10; one end of the pin shaft 2 is open and is not fixedly connected to the suspension rod 1 or other components, so that the pin shaft 2 is more flexible during installation and disassembly, and is convenient for cooperation with the rear axle seat 9, and a detachable stopper 6 is provided for temporary axial positioning of the rear axle seat 9.

[0051] At the same time, the end of the adjusting rod 8 away from the locking piece 3 extends toward the free end of the pin shaft 2, which can ensure that the adjusting rod 8 has enough space to contact the ear 10 of the rear axle seat 9, and the position where the adjusting rod 8 contacts the ear 10 avoids the welding position 12 of the ear 10, taking into account the subsequent welding work and avoiding damage to the welding position 12 or affecting the welding quality during the lifting process.

[0052] like Figure 3 As shown, for the ear 10 of the rear axle seat 9, the outer edge of the partial surrounding area of ​​the center cylinder is the area of ​​the U-shaped groove on the docking arm, and the abutment position is located outside the partial surrounding area and at the missing position of the whole ring.

[0053] The outer circumferential surface of the pin shaft 2 is provided with a recess 7 that cooperates with the stopper 6. There are multiple groups of recesses 7 spaced apart in the axial direction of the pin shaft 2, and each group has multiple recesses 7. The recess 7 is provided to cooperate with the stopper 6, so as to achieve accurate positioning and constraint of the relative axial position of the pin shaft 2 and the rear axle seat 9. There are multiple groups of recesses 7 spaced apart in the axial direction of the pin shaft 2, and each group has multiple recesses 7, which provides more positioning options and can be flexibly adjusted according to different specifications of the rear axle seat 9 and lifting requirements. At the same time, the recess 7 is a through hole, and the stopper 6 is penetrated through the through hole to locate the relative axial position of the pin shaft 2 and the rear axle seat 9. The design of the recess 7 as a through hole allows the stopper 6 to be easily penetrated therein to achieve fast and stable positioning.

[0054] The functions of the stopper 6 and the recess 7 are not only to prevent lateral slippage during the lifting process and ensure the relative position of the rear axle seat 9; in addition, for rear axle seats 9 with the same shaft hole diameter but different axial lengths, the matching position of the stopper 6 and the recess 7 can be adjusted, thereby changing the distribution position of the stopper in the axial direction of the pin shaft 2, adapting to rear axle seats 9 with different axial size specifications, and improving the applicability of the lifting tooling.

[0055] The slide groove is distributed along the axis of the suspension rod 1, and the locking member 3 is slidably installed in the slide groove. The locking member 3 can lock its position in the slide groove or unlock it to move along the slide groove. The adjustment rod 8 can move along the axis of the suspension rod 1 in the slide groove, thereby changing the distance between it and the axis of the pin shaft 2. The adjustability enables the suspension assembly tooling to adapt to rear axle seats 9 of different specifications, improving the versatility and flexibility of the tooling. At the same time, the locking member 3 can lock its position in the slide groove or unlock it to move along the slide groove, which not only ensures the stability of the adjustment rod 8 during the positioning process, but also facilitates position adjustment when necessary.

[0056] It should be pointed out that in actual work, the state in which the ear 10 hangs freely when the axis of the rear axle seat 9 is horizontal is not necessarily the target state. There is also a working condition in which the ear 10 of the rear axle seat 9 needs to be oriented obliquely downward to adapt to the U-groove posture, and the adjustment rods 8 on both sides need to be adjusted to adapt to special posture requirements.

[0057] Through the bilateral coordinated adjustment, the adjustment rods 8 on both sides need to work together, and the position of one side is staggered with the position of the other side in the vertical direction, so that the connecting line of their abutment positions is an oblique line, which makes the ear 10 face obliquely downward and can keep the rear axle seat 9 stable in the circumferential direction. Therefore, during the adjustment process, it is necessary to consider the position and angle of the adjustment rods 8 on both sides at the same time, so that they can jointly support the ear 10 of the rear axle seat 9 to prevent it from rotating or tilting.

[0058] When adjusting the positioning rod 8, special attention should be paid to avoid the welding position 12 of the ear 10. The positioning rod 8 should contact the non-welding area of ​​the ear 10 to ensure that the welding work will not be interfered with during the hoisting and subsequent assembly process, and unnecessary damage to the ear 10 structure can also be avoided.

[0059] The locking member 3 may be a fastening element such as a bolt or a screw, or may be locked in position by a pin in conjunction with a socket.

[0060] A lug plate 5 is provided at one end of the pin 2, and the boom 1 is detachably connected to the lug plate 5 through a fastener 4; the lug plate 5 realizes a detachable connection between the boom 1 and the pin 2. By connecting the boom 1 to the lug plate 5 through the fastener 4, the boom 1 and the pin 2 can be quickly installed and removed, thereby improving work efficiency. The fastener 4 can be a bolt, a screw, a pin, etc. At the same time, this connection method also makes the combination of the boom 1 and the pin 2 more stable and able to withstand various forces during the lifting process.

[0061] The boom 1 is provided with a bending section, and the bending section enables the lifting connection part of the boom 1 to be vertically above the center of gravity in a balanced state. The design of the bending section enables the lifting connection part to be vertically above the center of gravity in a balanced state, which can ensure that the lifting assembly tooling remains balanced during the lifting process, prevent shaking or tilting due to the shift of the center of gravity, and help to improve the stability and safety of the lifting.

[0062] According to the posture requirements when assembling the rear axle seat 9 and the boom, the circumferential posture of the rear axle seat 9 is adjusted and positioned using the positioning rod 8 to keep the rear axle seat 9 from rotating and stabilize the posture, thereby avoiding the secondary posture adjustment process after lifting and improving the assembly efficiency. The connection position of the positioning rod 8 and the ear 10 avoids the welding position 12, which helps to quickly position and fix after assembly.

[0063] Based on the above-mentioned bucket arm rear axle seat hanging assembly tooling, the working method of the bucket arm rear axle seat hanging assembly tooling includes the following steps:

[0064] One end of the pin shaft 2 passes through the shaft hole 11 of the rear axle seat 9 so that both ends of the pin shaft 2 are located outside the rear axle seat 9, and the stopper 6 is installed to constrain the axial position of the rear axle seat 9;

[0065] The adjusting rod 8 moves to abut against the non-welding position 12 of the ear 10, restricting the circumferential posture of the rear axle seat 9, and the locking member 3 fixes the position of the adjusting rod 8;

[0066] The lifting connection part cooperates with the external lifting equipment to lift and transfer the rear axle seat 9, and places the rear axle seat 9 at the target position of the boom;

[0067] The pin shaft 2 is separated from the suspension rod 1 and follows the rear axle seat 9 to participate in the subsequent assembly welding work;

[0068] The lifting rod 1 and the adjusting member are separated, and the other rear axle seat 9 is lifted.

[0069] Specifically, during the assembly process of the rear axle seat 9 of the excavator boom, the right end of the pin shaft 2 is inserted into the shaft hole 11 of the rear axle seat 9. According to the different lengths of the rear axle seat 9, a stopper 6 is arranged on the pin shaft 2 to prevent the rear axle seat 9 from shaking in the axial direction during the process and to prevent the rear axle seat 9 from sliding and falling. At the same time, the position of the adjustment rod 8 is adjusted to make it abut against the ear 10 of the rear axle seat 9 to prevent the rear axle seat 9 from rotating, thus solving the problem of the unstable posture of the rear axle seat 9. When the rear axle seat 9 is hoisted onto the assembly tooling, the fastener 4 is removed, the hoisting rod 1 is removed, and the pin shaft 2 is retained for subsequent assembly and welding work.

[0070] After constraining the axial position of the rear axle seat 9, the circumferential posture of the rear axle seat 9 is adjusted and maintained by abutting the adjustment rod 8, so that the posture of the rear axle seat 9 matches the distribution posture of the matched U-shaped groove.

[0071] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A bucket arm rear axle seat hanging assembly tooling, characterized in that: include: A pin shaft is used to coaxially match the shaft hole of the rear axle seat, and the outer circumferential surface of the pin shaft can be detachably matched with a stopper for abutting against the end surface of the rear axle seat; a suspension rod, one end of which is detachably connected to one end of the pin shaft, and the other end of which extends outside the outer circumferential surface of the pin shaft to form a suspension connection portion; The adjusting member includes an adjusting rod and a locking member. A sliding groove is provided on the suspension rod. One end of the adjusting rod is installed in the sliding groove through the locking member. The adjusting rod is used to abut the ear of the rear axle seat to position the circumferential posture of the rear axle seat. The adjusting rod changes the distance and / or angle between the adjusting rod and the axis of the pin shaft through the movement of the locking member along the sliding groove.

2. The boom rear axle seat hanging assembly tooling as claimed in claim 1, characterized in that: Positioning rods are respectively arranged on both sides of the axis of the suspension rod, and the positioning rods located on the opposite sides of the axis of the suspension rod abut against different positions of the ears of the rear axle seat.

3. The boom rear axle seat hanging assembly tooling as claimed in claim 2, characterized in that: The end of the pin shaft that is not connected to the suspension rod is a free end, and the end of the adjustment rod away from the locking member extends toward the free end of the pin shaft, and the position where the adjustment rod contacts the ear avoids the ear welding position.

4. The boom rear axle seat hanging assembly tooling as claimed in claim 1, characterized in that: The outer circumferential surface of the pin shaft is provided with recesses that cooperate with the stopper, and the recesses are distributed in multiple groups at intervals in the axial direction of the pin shaft, and each group has multiple recesses.

5. The boom rear axle seat hanging assembly tooling as claimed in claim 4, characterized in that: The recessed portion is a through hole, and the stopper is penetrated through the through hole to locate the relative axial position of the pin shaft and the rear axle seat.

6. The boom rear axle seat hanging assembly tooling as claimed in claim 1, characterized in that: The slide groove is distributed along the axis of the suspension rod, and the locking member is slidably installed in the slide groove. The locking member can lock its position in the slide groove or unlock it to move along the slide groove.

7. The boom rear axle seat hanging assembly tooling as claimed in claim 1, characterized in that: An ear plate is provided at one end of the pin shaft, and the suspension rod is detachably connected to the ear plate through a fastener.

8. The boom rear axle seat hanging assembly tooling as claimed in claim 1, characterized in that: The suspension rod is provided with a bending section, and the suspension rod enables the lifting connection part to be in a balanced state vertically above the center of gravity through the bending section.

9. The boom rear axle seat hanging assembly tooling as claimed in claim 8, characterized in that: The lifting connection part is a lifting ring.

10. The boom rear axle seat hanging assembly tooling as claimed in claim 1, characterized in that: The locking piece is a fastening element.

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