CN217972404U - Portal frame device - Google Patents

Abstract

The utility model provides a portal frame device, include: a first vertical arm; the second vertical arm is arranged at a distance from the first vertical arm; the connecting arm is connected between the top of the first vertical arm and the top of the second vertical arm; the lifting platform is arranged on the first vertical arm in a lifting manner; and the driving device is in driving fit with the lifting platform so as to drive the lifting platform to lift. The technical scheme of this application has solved the unable problem of realizing hoist and mount welding wire bucket of portal frame among the correlation technique effectively.

Description

Portal frame device

Technical Field

The utility model relates to a portal frame technical field particularly, relates to a portal frame device.

Background

The automatic welding production line has stable welding quality, improves the labor productivity, reduces the requirements on the operation technology of workers, and is widely applied to various industries. The barreled welding wire matched with the welding production line for use is also applied and popularized. The barreled welding wire has the characteristics of small welding wire deformation, stable feeding, low welding wire replacing frequency, auxiliary time saving, high requirements on fields and environment and the like. However, when the barreled welding wire is placed on the ground, the distance between the welding wire barrel and the welding gun is far, the wire feeding resistance is large, the pre-tightening force on the wire feeding mechanism is large, the coating on the surface of the welding wire falls off, and the coating can block the inner wall of the wire feeding pipeline after continuously running for a period of time, so that the problems of uneven wire feeding speed, even wire breakage and the like are caused. Therefore, in order to shorten the wire feeding distance, in a gantry type welding robot system, the barreled welding wires need crown blocks to be installed on a beam platform in a matched mode, and due to the fact that the height of the beam platform is high, and the length of a sling is increased, the lifting height of most crown blocks cannot meet requirements, and crown blocks with larger lifting heights need to be replaced.

The method for solving the problem of installation of the barreled welding wire in the prior art horizontally lays the barreled welding wire, uses a sling which is as short as possible to surround the welding wire barrel, slowly places the welding wire barrel on a beam platform of a portal frame, and needs two operators to vertically lay the horizontally laid welding wire barrel right and move the welding wire barrel to a fixed frame.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a portal frame device to solve the unable problem that realizes hoist and mount welding wire bucket of portal frame among the correlation technique.

In order to achieve the above object, the utility model provides a portal frame device, include: a first vertical arm; the second vertical arm is arranged at a distance from the first vertical arm; the connecting arm is connected between the top of the first vertical arm and the top of the second vertical arm; the lifting platform is arranged on the first vertical arm in a lifting manner; and the driving device is in driving fit with the lifting platform so as to drive the lifting platform to lift.

Further, the portal frame device further comprises a support frame and a guide structure, the support frame is arranged on the first vertical arm, the lifting platform is arranged on the support frame, and the guide structure is arranged between the support frame and the lifting platform.

Furthermore, the driving device comprises a motor, a transmission chain, a first gear and a second gear, the first gear and the second gear are arranged at the upper end and the lower end of the supporting frame, the first gear is located below the second gear, the transmission chain is arranged on the first gear and the second gear in a surrounding mode, the motor is in driving fit with the first gear, and the lifting platform is fixedly connected with the transmission chain.

Furthermore, the portal frame device also comprises a connecting sleeve, the connecting sleeve is connected on the lifting platform, and the transmission chain penetrates into the connecting sleeve and is fixedly connected with the connecting sleeve through a bolt.

Further, guide structure includes guide rail and slider, and the guide rail setting sets up on the support frame along the length direction of support frame, and the slider is portable to be set up on the guide rail, and the elevating platform is connected with the slider.

Furthermore, the first gears comprise two gears arranged on two sides of the support frame, the second gears comprise two gears arranged on two sides of the support frame, the portal frame device further comprises a first connecting shaft and a second connecting shaft, the first connecting shaft is connected between the two first gears, the second connecting shaft is connected between the two second gears, the number of the transmission chains is two, and the two transmission chains are connected with the two first gears and the two second gears correspondingly.

Furthermore, the portal frame device also comprises an adjusting piece, the adjusting piece is arranged at the top of the support frame and is connected with the second gear, and the adjusting piece can adjust the distance between the second gear and the first gear.

Further, the portal frame device still includes brake equipment, brake equipment sets up on first gear, brake equipment includes that base and interval set up and articulate the first card arm on the base, the second card arm and with first card arm and second card arm complex driving piece, be provided with first brake disc on the first card arm, be provided with the second brake disc on the second card arm, first brake disc and second brake disc set up respectively in the both sides of first connecting axle, and can lock or unblock first connecting axle, first card arm of driving piece drive and second card arm are close to each other or keep away from each other.

Further, brake equipment still includes connecting block and connecting rod, and the connecting block articulates in the top of first card arm, and the both ends of connecting rod are articulated with second card arm and connecting block respectively, and the driving piece is connected with the connecting block is articulated including fixed cylinder body and the telescopic link of telescopic setting on the cylinder body that sets up on the base, driving piece and connecting block.

Further, the brake device also comprises a damping piece hinged between the first clamping arm and the second clamping arm, and the damping piece is positioned between the first connecting shaft and the connecting rod.

Use the technical scheme of the utility model, first arm and the second found the arm interval and set up, and the linking arm is connected at the top that first arm and the second found the arm. The elevating platform sets up and can realize going up and down on first standing arm. The driving device is in driving fit with the lifting platform and can drive the lifting platform to move up and down. Through foretell setting, the welding wire bucket sets up on the elevating platform, and under drive arrangement's effect, the elevating platform can realize going up and down, and then makes the welding wire bucket realize going up and down, not only can reduce the degree of difficulty of going up and down welding wire bucket like this, can make the position of welding wire bucket more stable simultaneously. Therefore, the technical scheme effectively solves the problem that the portal frame in the related technology cannot hoist the welding wire barrel.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 shows a schematic perspective view of an embodiment of a gantry apparatus according to the present invention;

fig. 2 shows a schematic front view of the gantry apparatus of fig. 1;

FIG. 3 shows a side view schematic of the gantry apparatus of FIG. 1;

fig. 4 shows a perspective view of a drive device of the gantry apparatus of fig. 1;

FIG. 5 shows a schematic side view of the drive arrangement of FIG. 4;

FIG. 6 shows an exploded view of the drive of FIG. 4;

fig. 7 shows a partial enlarged view of the drive device of fig. 6 at a;

fig. 8 shows a partial enlarged view of the drive device of fig. 6 at B.

Wherein the figures include the following reference numerals:

10. a first vertical arm; 20. a second vertical arm; 30. a connecting arm; 40. a lifting platform; 41. connecting sleeves; 50. a drive device; 51. a motor; 52. a drive chain; 53. a first gear; 54. a second gear; 60. a support frame; 70. a guide structure; 71. a guide rail; 72. a slider; 81. a first connecting shaft; 82. a second connecting shaft; 90. an adjustment member; 100. a brake device; 110. a base; 120. a first clamp arm; 121. a first brake disc; 130. a second clamp arm; 131. a second brake disc; 140. a drive member; 150. a connecting rod; 160. connecting blocks; 170. a shock absorbing member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

At present, hoist the welding wire bucket to the portal frame through the mode of hoist and mount, but such mode can make operating personnel risk coefficient high, and the crossbeam platform height of portal frame exceeds 3.5 meters, and the operating space is narrow and small, belongs to high altitude construction, and barreled welding wire weight is about 250 kilograms, and operating personnel during operation needs two people to put and remove the mount to keeping flat the barreled welding wire from keeping flat adjustment to erectting, 30 minutes consuming time at least, and risk coefficient is high, need wear safety belt and safety helmet. Meanwhile, the welding wire is damaged, the barreled welding wire is horizontally placed before being lifted and transported and then vertically placed, certain impact and deformation are caused to the welding wire in the barrel, and wire disorder is easily caused. And also can have the potential safety hazard like this, the overhead traveling crane hoist and mount barreled welding wire and enter into the welding production line region, because the lifting height of overhead traveling crane is less than the welding production line peak, probably bumps automation equipment.

As shown in fig. 1 to 4, in the present embodiment, the gantry apparatus includes: the lifting device comprises a first vertical arm 10, a second vertical arm 20, a connecting arm 30, a lifting platform 40 and a driving device 50. The second upright arm 20 is spaced apart from the first upright arm 10. A connecting arm 30 is connected between the top of the first upright arm 10 and the top of the second upright arm 20. The lift table 40 is provided on the first vertical arm 10 so as to be able to ascend and descend. The driving device 50 is in driving cooperation with the lifting platform 40 to drive the lifting platform 40 to lift.

By applying the technical solution of the present embodiment, the first vertical arm 10 and the second vertical arm 20 are disposed at an interval, and the connecting arm 30 is connected to the top of the first vertical arm 10 and the second vertical arm 20. The lifting platform 40 is provided on the first vertical arm 10 and can be lifted. The driving device 50 is in driving engagement with the elevating table 40, and the driving device 50 can drive the elevating table 40 to move up and down. Through foretell setting up the welding wire bucket and setting up on elevating platform 40, under drive arrangement 50's effect, elevating platform 40 can realize going up and down, and then makes the welding wire bucket realize going up and down, not only can reduce the degree of difficulty of going up and down welding wire bucket like this, can make the position of welding wire bucket more stable simultaneously. Therefore, the technical scheme of the embodiment effectively solves the problem that the portal frame in the related technology can not realize hoisting of the welding wire barrel.

Specifically, as shown in fig. 1 to 8, the control system of the driving device 50 includes a control box, a limit switch, an electromagnetic band-type brake coil, and an audible and visual alarm. When the lifting platform 40 is lifted to a certain height, the audible and visual alarm acts to prompt people not to stand below. The control box is provided with a lifting button, a descending button and an emergency stop button, a power-off delay relay is installed in the control box, the design speed of the lifting platform 40 is 1 m/min, the lifting height is 3 m, and therefore 3-minute power-off delay time is set in the control system.

As shown in fig. 1 to 8, in the present embodiment, the operation of the driving device 50 is as follows: when the barreled wire needs to be replaced, the welding system is stopped and the connecting arm 30 is stopped at a designated position. The barreled welding wire is put into a feeding trolley and transported to the lifting platform 40, the stop lever on the lifting platform 40 is taken down, the feeding trolley and the barreled welding wire are pushed into the lifting platform 40, and the stop lever is locked in place. After the safety is confirmed, the lifting button is pressed, the audible and visual alarm is actuated, the motor 51 automatically stops after 3 minutes, and the lifting platform 40 is lifted to a specified height and is flush with the connecting arm 30. The operator fastens the safety belt and then moves up the connecting arm 30, pushes the feeding trolley into the receiving tray from the lifting table 40, and locks the stop lever. The operator returns the welding wire from the connecting arm 30 to the ground after the welding wire is installed. And pressing a descending button, after 3 minutes, descending the lifting platform 40 to the ground, stopping the action of the audible and visual alarm, and finishing the replacement of the welding wires.

Can reduce the potential safety hazard through foretell setting, this scheme need not put the installation bucket horizontally flat when transportation and installation barreled welding wire, does not need the overhead traveling crane to enter into the welding production line region, does not have impact and deformation to the welding wire, reduces the probability that the welding wire warp and indiscriminate line. Can alleviate intensity of labour simultaneously, this scheme also needs operating personnel to ascend a height the operation, but the operating strength is far less than current operation mode, and only needs an operating personnel operation of ascending a height. This scheme of adoption can improve work efficiency, and this scheme is changed barreled welding wire and is needed 20 minutes time from shutting down to changing the completion, compares in current operation mode, changes at every turn and practices thrift 10 minutes.

As shown in fig. 1 to 4, in the present embodiment, the gantry apparatus further includes a support frame 60 and a guide structure 70, the support frame 60 is disposed on the first vertical arm 10, the lifting platform 40 is disposed on the support frame 60, and the guide structure 70 is disposed between the support frame 60 and the lifting platform 40. The support frame 60 is arranged to enable the lifting platform 40 to lift more stably, and meanwhile the guide structure 70 is arranged to guide the lifting platform 40, so that the position of the lifting platform 40 can be ensured to be more stable.

As shown in fig. 1 to 8, in the present embodiment, the driving device 50 includes a motor 51, a transmission chain 52, a first gear 53 and a second gear 54, the first gear 53 and the second gear 54 are disposed at the upper end and the lower end of the supporting frame 60, the first gear 53 is located below the second gear 54, the transmission chain 52 is disposed around the first gear 53 and the second gear 54, the motor 51 is in driving fit with the first gear 53, and the lifting platform 40 is fixedly connected to the transmission chain 52. The motor 51 can drive the first gear 53 to rotate, and the rotation of the first gear 53 can drive the transmission chain 52 to rotate, so as to realize the rotation of the second gear 54. Specifically, the first gear 53 and the second gear 54 are arranged to enable the transmission chain 52 to rotate, and the lifting table 40 can be driven to move during the rotation of the transmission chain 52.

As shown in fig. 1 to 8, in this embodiment, the gantry apparatus further includes a connecting sleeve 41, the connecting sleeve 41 is connected to the lifting platform 40, and the transmission chain 52 penetrates into the connecting sleeve 41 and is fixedly connected to the connecting sleeve 41 through a pin. The transmission chain 52 penetrates into the connecting sleeve 41, and the bolt can fix the transmission chain 52 and the connecting sleeve 41, so that the lifting platform 40 can synchronously move along with the transmission chain 52, and the movement of the lifting platform 40 can be more stable.

As shown in fig. 1 to 8, in the present embodiment, the guide structure 70 includes a guide rail 71 and a slider 72, the guide rail 71 is disposed on the support frame 60 along the length direction of the support frame 60, the slider 72 is movably disposed on the guide rail 71, and the lifting platform 40 is connected to the slider 72. The arrangement of the guide rail 71 and the slider 72 enables effective guidance, while the guide rail 71 and the slider 72 are simple in structure and easy to arrange.

As shown in fig. 1 to 8, in the present embodiment, the first gears 53 include two gears disposed on both sides of the supporting frame 60, the second gears 54 include two gears disposed on both sides of the supporting frame 60, the gantry apparatus further includes a first connecting shaft 81 and a second connecting shaft 82, the first connecting shaft 81 is connected between the two first gears 53, the second connecting shaft 82 is connected between the two second gears 54, the number of the transmission chains 52 is two, and the two transmission chains 52 are correspondingly connected to the two first gears 53 and the two second gears 54. The lifting of the lifting platform 40 can be more stable due to the arrangement, and meanwhile, the two transmission chains 52 are connected with the two connecting sleeves 41, so that the position stability of the lifting platform 40 can be ensured.

As shown in fig. 1 to 8, in the present embodiment, the gantry apparatus further includes an adjusting member 90, the adjusting member 90 is disposed on the top of the supporting frame 60 and is connected to the second gear 54, and the adjusting member 90 can adjust a distance between the second gear 54 and the first gear 53. The setting of regulating part 90 can be adjusted the position of second gear 54, and specifically, regulating part 90 includes regulating block and rotation post, rotates the post and rotates and can drive the regulating block and reciprocate, and then can drive the second gear and reciprocate.

As shown in fig. 1 to 8, in this embodiment, the gantry apparatus further includes a brake apparatus 100, the brake apparatus 100 is disposed on the first gear 53, the brake apparatus 100 includes a base 110, a first clamping arm 120 and a second clamping arm 130 that are disposed at an interval and hinged on the base 110, and a driving member 140 that is matched with the first clamping arm 120 and the second clamping arm 130, a first brake disc 121 is disposed on the first clamping arm 120, a second brake disc 131 is disposed on the second clamping arm 130, the first brake disc 121 and the second brake disc 131 are respectively disposed on two sides of the first connecting shaft 81 and can lock or unlock the first connecting shaft 81, and the driving member 140 drives the first clamping arm 120 and the second clamping arm 130 to approach to each other or to move away from each other. The first connecting shaft 81 can be locked by the arrangement of the first brake disc 121 and the second brake disc 131, so that the rotation of the first connecting shaft 81 can be locked, and the position of the lifting table 40 can be ensured. Specifically, the driving member 140 can draw in and spread out the first and second chucking arms 120 and 130.

As shown in fig. 1 to 8, in this embodiment, the braking device 100 further includes a connection block 160 and a connection rod 150, the connection block 160 is hinged to the top end of the first clamping arm 120, two ends of the connection rod 150 are hinged to the second clamping arm 130 and the connection block 160, the driving member 140 includes a cylinder body fixedly disposed on the base 110 and a telescopic rod telescopically disposed on the cylinder body, and the driving member 140 is hinged to the connection block 160. The connecting block 160 can be pulled by the driving element 140, that is, the connecting block 160 can swing and can drive the connecting rod 150 to move, and the connecting rod 150 is hinged to the second clamping arm 130, so that the second clamping arm 130 can be pulled close to lock the first connecting shaft 81. Specifically, the link block 160 and the driving member 140 are coupled at a first hinge point, the link block 160 and the connecting rod 150 are coupled at a second hinge point, and the link block 160 and the first latch arm 120 are coupled at a third hinge point, the first hinge point, the second hinge point, and the third hinge point defining a triangle.

As shown in fig. 1 to 8, in the present embodiment, the braking apparatus 100 further includes a shock absorbing member 170 hinged between the first and second catching arms 120 and 130, the shock absorbing member 170 being located between the first connecting shaft 81 and the connecting rod 150. The shock absorbing member 170 is disposed to prevent the first and second latch arms 120 and 130 from being in hard contact with each other, and to separate the first and second latch arms 120 and 130 from each other under the action of the shock absorbing member 170 when the driving member 140 does not apply a force.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A gantry apparatus, comprising:

a first upright arm (10);

a second upright arm (20) which is arranged at a distance from the first upright arm (10);

a connecting arm (30) connected between the top of the first upright arm (10) and the top of the second upright arm (20);

a lifting platform (40) which is arranged on the first vertical arm (10) in a lifting way;

and the driving device (50) is in driving fit with the lifting platform (40) so as to drive the lifting platform (40) to lift.

2. The gantry apparatus according to claim 1, further comprising a support frame (60) and a guide structure (70), wherein the support frame (60) is disposed on the first vertical arm (10), the lift table (40) is disposed on the support frame (60), and the guide structure (70) is disposed between the support frame (60) and the lift table (40).

3. The portal frame device of claim 2, wherein the driving device (50) comprises a motor (51), a transmission chain (52), a first gear (53) and a second gear (54), the first gear (53) and the second gear (54) are disposed at upper and lower ends of the support frame (60), the first gear (53) is located below the second gear (54), the transmission chain (52) is disposed around the first gear (53) and the second gear (54), the motor (51) is in driving fit with the first gear (53), and the lifting platform (40) is fixedly connected with the transmission chain (52).

4. A gantry apparatus according to claim 3, further comprising a connecting sleeve (41), wherein the connecting sleeve (41) is connected to the lifting platform (40), and the transmission chain (52) penetrates into the connecting sleeve (41) and is fixedly connected with the connecting sleeve (41) through a bolt.

5. The gantry apparatus of claim 2, wherein the guiding structure (70) comprises a guiding rail (71) and a sliding block (72), the guiding rail (71) is disposed on the supporting frame (60) along the length direction of the supporting frame (60), the sliding block (72) is movably disposed on the guiding rail (71), and the lifting platform (40) is connected with the sliding block (72).

6. A gantry apparatus according to claim 3, wherein said first gears (53) comprise two gears disposed on two sides of said supporting frame (60), said second gears (54) comprise two gears disposed on two sides of said supporting frame (60), said gantry apparatus further comprises a first connecting shaft (81) and a second connecting shaft (82), said first connecting shaft (81) is connected between two said first gears (53), said second connecting shaft (82) is connected between two said second gears (54), said transmission chain (52) comprises two, and two said transmission chains (52) are correspondingly connected with two said first gears (53) and two said second gears (54).

7. The gantry apparatus according to claim 6, further comprising an adjusting member (90), wherein the adjusting member (90) is disposed on top of the supporting frame (60) and connected to the second gear (54), and the adjusting member (90) can adjust a distance between the second gear (54) and the first gear (53).

8. The portal frame device according to claim 7, further comprising a brake device (100), wherein the brake device (100) is disposed on the first gear (53), the brake device (100) comprises a base (110), a first clamping arm (120) and a second clamping arm (130) which are disposed at intervals and hinged on the base (110), and a driving member (140) which is matched with the first clamping arm (120) and the second clamping arm (130), a first brake disc (121) is disposed on the first clamping arm (120), a second brake disc (131) is disposed on the second clamping arm (130), the first brake disc (121) and the second brake disc (131) are disposed on two sides of the first connecting shaft (81) respectively and can lock or unlock the first connecting shaft (81), and the driving member (140) drives the first clamping arm (120) and the second clamping arm (130) to approach to or move away from each other.

9. The gantry apparatus of claim 8, wherein the brake apparatus (100) further comprises a connecting block (160) and a connecting rod (150), the connecting block (160) is hinged to the top end of the first clamping arm (120), two ends of the connecting rod (150) are respectively hinged to the second clamping arm (130) and the connecting block (160), the driving member (140) comprises a cylinder fixedly disposed on the base (110) and a telescopic rod telescopically disposed on the cylinder, and the driving member (140) is hinged to the connecting block (160).

10. The gantry apparatus according to claim 9, wherein the brake apparatus (100) further comprises a shock absorbing member (170) hinged between the first and second chucking arms (120, 130), the shock absorbing member (170) being located between the first connecting shaft (81) and the connecting rod (150).

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